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[PATCH v19 02/33] libtasn1: import libtasn1-4.19.0


From: Gary Lin
Subject: [PATCH v19 02/33] libtasn1: import libtasn1-4.19.0
Date: Fri, 6 Sep 2024 17:10:54 +0800

From: Daniel Axtens <dja@axtens.net>

Import a very trimmed-down set of libtasn1 files:

curl -L -O https://ftp.gnu.org/gnu/libtasn1/libtasn1-4.19.0.tar.gz
tar xf libtasn1-4.19.0.tar.gz
rm -rf grub-core/lib/libtasn1/
mkdir -p grub-core/lib/libtasn1/lib/
mkdir -p grub-core/lib/libtasn1/tests/
cp libtasn1-4.19.0/{README.md,COPYING} grub-core/lib/libtasn1/
cp 
libtasn1-4.19.0/lib/{coding.c,decoding.c,element.c,element.h,errors.c,gstr.c,gstr.h,int.h,parser_aux.c,parser_aux.h,structure.c,structure.h}
 grub-core/libtasn1/lib/
cp libtasn1-4.19.0/lib/includes/libtasn1.h grub-core/lib/libtasn1/
cp 
libtasn1-4.19.0/tests/{CVE-2018-1000654-1_asn1_tab.h,CVE-2018-1000654-2_asn1_tab.h,CVE-2018-1000654.c,object-id-decoding.c,object-id-encoding.c,octet-string.c,reproducers.c,Test_overflow.c,Test_simple.c,Test_strings.c}
 grub-core/lib/libtasn1/tests
rm -rf libtasn1-4.19.0*

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/lib/libtasn1/COPYING                |   16 +
 grub-core/lib/libtasn1/README.md              |   98 +
 grub-core/lib/libtasn1/lib/coding.c           | 1425 ++++++++++
 grub-core/lib/libtasn1/lib/decoding.c         | 2501 +++++++++++++++++
 grub-core/lib/libtasn1/lib/element.c          | 1109 ++++++++
 grub-core/lib/libtasn1/lib/element.h          |   42 +
 grub-core/lib/libtasn1/lib/errors.c           |  100 +
 grub-core/lib/libtasn1/lib/gstr.c             |   74 +
 grub-core/lib/libtasn1/lib/gstr.h             |   50 +
 grub-core/lib/libtasn1/lib/int.h              |  221 ++
 grub-core/lib/libtasn1/lib/parser_aux.c       | 1178 ++++++++
 grub-core/lib/libtasn1/lib/parser_aux.h       |  172 ++
 grub-core/lib/libtasn1/lib/structure.c        | 1225 ++++++++
 grub-core/lib/libtasn1/lib/structure.h        |   46 +
 grub-core/lib/libtasn1/libtasn1.h             |  643 +++++
 .../tests/CVE-2018-1000654-1_asn1_tab.h       |   32 +
 .../tests/CVE-2018-1000654-2_asn1_tab.h       |   36 +
 .../lib/libtasn1/tests/CVE-2018-1000654.c     |   72 +
 grub-core/lib/libtasn1/tests/Test_overflow.c  |  168 ++
 grub-core/lib/libtasn1/tests/Test_simple.c    |  226 ++
 grub-core/lib/libtasn1/tests/Test_strings.c   |  156 +
 .../lib/libtasn1/tests/object-id-decoding.c   |  121 +
 .../lib/libtasn1/tests/object-id-encoding.c   |  133 +
 grub-core/lib/libtasn1/tests/octet-string.c   |  230 ++
 grub-core/lib/libtasn1/tests/reproducers.c    |   90 +
 25 files changed, 10164 insertions(+)
 create mode 100644 grub-core/lib/libtasn1/COPYING
 create mode 100644 grub-core/lib/libtasn1/README.md
 create mode 100644 grub-core/lib/libtasn1/lib/coding.c
 create mode 100644 grub-core/lib/libtasn1/lib/decoding.c
 create mode 100644 grub-core/lib/libtasn1/lib/element.c
 create mode 100644 grub-core/lib/libtasn1/lib/element.h
 create mode 100644 grub-core/lib/libtasn1/lib/errors.c
 create mode 100644 grub-core/lib/libtasn1/lib/gstr.c
 create mode 100644 grub-core/lib/libtasn1/lib/gstr.h
 create mode 100644 grub-core/lib/libtasn1/lib/int.h
 create mode 100644 grub-core/lib/libtasn1/lib/parser_aux.c
 create mode 100644 grub-core/lib/libtasn1/lib/parser_aux.h
 create mode 100644 grub-core/lib/libtasn1/lib/structure.c
 create mode 100644 grub-core/lib/libtasn1/lib/structure.h
 create mode 100644 grub-core/lib/libtasn1/libtasn1.h
 create mode 100644 grub-core/lib/libtasn1/tests/CVE-2018-1000654-1_asn1_tab.h
 create mode 100644 grub-core/lib/libtasn1/tests/CVE-2018-1000654-2_asn1_tab.h
 create mode 100644 grub-core/lib/libtasn1/tests/CVE-2018-1000654.c
 create mode 100644 grub-core/lib/libtasn1/tests/Test_overflow.c
 create mode 100644 grub-core/lib/libtasn1/tests/Test_simple.c
 create mode 100644 grub-core/lib/libtasn1/tests/Test_strings.c
 create mode 100644 grub-core/lib/libtasn1/tests/object-id-decoding.c
 create mode 100644 grub-core/lib/libtasn1/tests/object-id-encoding.c
 create mode 100644 grub-core/lib/libtasn1/tests/octet-string.c
 create mode 100644 grub-core/lib/libtasn1/tests/reproducers.c

diff --git a/grub-core/lib/libtasn1/COPYING b/grub-core/lib/libtasn1/COPYING
new file mode 100644
index 000000000..e8b3628db
--- /dev/null
+++ b/grub-core/lib/libtasn1/COPYING
@@ -0,0 +1,16 @@
+LICENSING
+=========
+
+The libtasn1 library is released under the GNU Lesser General Public
+License (LGPL) version 2.1 or later; see [COPYING.LESSER](doc/COPYING.LESSER)
+for the license terms.
+
+The GNU LGPL applies to the main libtasn1 library, while the
+included applications library are under the GNU GPL version 3.
+The libtasn1 library is located in the lib directory, while the applications
+in src/.
+
+The documentation in doc/ is under the GNU FDL license 1.3.
+
+For any copyright year range specified as YYYY-ZZZZ in this package
+note that the range specifies every single year in that closed interval.
diff --git a/grub-core/lib/libtasn1/README.md b/grub-core/lib/libtasn1/README.md
new file mode 100644
index 000000000..b0305b93e
--- /dev/null
+++ b/grub-core/lib/libtasn1/README.md
@@ -0,0 +1,98 @@
+# Libtasn1 README -- Introduction information
+
+This is GNU Libtasn1, a small ASN.1 library.
+
+The C library (libtasn1.*) is licensed under the GNU Lesser General
+Public License version 2.1 or later.  See the file COPYING.LIB.
+
+The command line tool, self tests, examples, and other auxilliary
+files, are licensed under the GNU General Public License version 3.0
+or later.  See the file COPYING.
+
+## Building the library
+
+We require several tools to build the software, including:
+
+* [Make](https://www.gnu.org/software/make/)
+* [Automake](https://www.gnu.org/software/automake/) (use 1.11.3 or later)
+* [Autoconf](https://www.gnu.org/software/autoconf/)
+* [Libtool](https://www.gnu.org/software/libtool/)
+* [Texinfo](https://www.gnu.org/software/texinfo/)
+* [help2man](http://www.gnu.org/software/help2man/)
+* [Tar](https://www.gnu.org/software/tar/)
+* [Gzip](https://www.gnu.org/software/gzip/)
+* [bison](https://www.gnu.org/software/bison/)
+* [Texlive & epsf](https://www.tug.org/texlive/) (for PDF manual)
+* [GTK-DOC](https://www.gtk.org/gtk-doc/) (for API manual)
+* [Git](https://git-scm.com/)
+* [libabigail](https://pagure.io/libabigail/) (for abi comparison in make dist)
+* [Valgrind](https://valgrind.org/) (optional)
+
+The required software is typically distributed with your operating
+system, and the instructions for installing them differ.  Here are
+some hints:
+
+Debian/Ubuntu:
+```
+sudo apt-get install make git autoconf automake libtool bison
+sudo apt-get install texinfo help2man gtk-doc-tools valgrind abigail-tools
+```
+
+PDF manual - Debian <= stretch:
+```
+sudo apt-get install texlive-generic-recommended texlive texlive-extra-utils
+```
+
+PDF manual - Debian >= buster:
+```
+sudo apt-get install texlive-plain-generic texlive texlive-extra-utils
+```
+
+The next step is to run autoreconf, ./configure, etc:
+
+```
+$ ./bootstrap
+```
+
+Then build the project normally:
+
+```
+$ ./configure
+$ make check
+```
+
+Happy hacking!
+
+
+## Manual
+
+The manual is in the `doc/` directory of the release.
+
+You can also browse the manual online at:
+
+ - https://www.gnu.org/software/libtasn1/manual/
+ - https://gnutls.gitlab.io/libtasn1/manual/
+ - https://gnutls.gitlab.io/libtasn1/manual/libtasn1.html
+ - https://gnutls.gitlab.io/libtasn1/manual/libtasn1.pdf
+ - https://gnutls.gitlab.io/libtasn1/reference/
+ - https://gnutls.gitlab.io/libtasn1/reference/libtasn1.pdf
+
+
+## Code coverage report
+
+The coverage report is at:
+
+ - https://gnutls.gitlab.io/libtasn1/coverage
+
+
+## Issue trackers
+
+ - [Main issue tracker](https://gitlab.com/gnutls/libtasn1/issues)
+ - [oss-fuzz found 
issues](https://bugs.chromium.org/p/oss-fuzz/issues/list?q=libtasn1&can=2)
+
+
+## Homepage
+
+The project homepage at the gnu site is at:
+
+https://www.gnu.org/software/libtasn1/
diff --git a/grub-core/lib/libtasn1/lib/coding.c 
b/grub-core/lib/libtasn1/lib/coding.c
new file mode 100644
index 000000000..ea5bc370e
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/coding.c
@@ -0,0 +1,1425 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+
+/*****************************************************/
+/* File: coding.c                                    */
+/* Description: Functions to create a DER coding of  */
+/*   an ASN1 type.                                   */
+/*****************************************************/
+
+#include <int.h>
+#include "parser_aux.h"
+#include <gstr.h>
+#include "element.h"
+#include "minmax.h"
+#include <structure.h>
+
+#define MAX_TAG_LEN 16
+
+/******************************************************/
+/* Function : _asn1_error_description_value_not_found */
+/* Description: creates the ErrorDescription string   */
+/* for the ASN1_VALUE_NOT_FOUND error.                */
+/* Parameters:                                        */
+/*   node: node of the tree where the value is NULL.  */
+/*   ErrorDescription: string returned.               */
+/* Return:                                            */
+/******************************************************/
+static void
+_asn1_error_description_value_not_found (asn1_node node,
+                                        char *ErrorDescription)
+{
+
+  if (ErrorDescription == NULL)
+    return;
+
+  Estrcpy (ErrorDescription, ":: value of element '");
+  _asn1_hierarchical_name (node, ErrorDescription + strlen (ErrorDescription),
+                          ASN1_MAX_ERROR_DESCRIPTION_SIZE - 40);
+  Estrcat (ErrorDescription, "' not found");
+
+}
+
+/**
+ * asn1_length_der:
+ * @len: value to convert.
+ * @der: buffer to hold the returned encoding (may be %NULL).
+ * @der_len: number of meaningful bytes of ANS (der[0]..der[der_len-1]).
+ *
+ * Creates the DER encoding of the provided length value.
+ * The @der buffer must have enough room for the output. The maximum
+ * length this function will encode is %ASN1_MAX_LENGTH_SIZE.
+ *
+ * To know the size of the DER encoding use a %NULL value for @der.
+ **/
+void
+asn1_length_der (unsigned long int len, unsigned char *der, int *der_len)
+{
+  int k;
+  unsigned char temp[ASN1_MAX_LENGTH_SIZE];
+#if SIZEOF_UNSIGNED_LONG_INT > 8
+  len &= 0xFFFFFFFFFFFFFFFF;
+#endif
+
+  if (len < 128)
+    {
+      /* short form */
+      if (der != NULL)
+       der[0] = (unsigned char) len;
+      *der_len = 1;
+    }
+  else
+    {
+      /* Long form */
+      k = 0;
+      while (len)
+       {
+         temp[k++] = len & 0xFF;
+         len = len >> 8;
+       }
+      *der_len = k + 1;
+      if (der != NULL)
+       {
+         der[0] = ((unsigned char) k & 0x7F) + 128;
+         while (k--)
+           der[*der_len - 1 - k] = temp[k];
+       }
+    }
+}
+
+/******************************************************/
+/* Function : _asn1_tag_der                           */
+/* Description: creates the DER coding for the CLASS  */
+/* and TAG parameters.                                */
+/* It is limited by the ASN1_MAX_TAG_SIZE variable    */
+/* Parameters:                                        */
+/*   class: value to convert.                         */
+/*   tag_value: value to convert.                     */
+/*   ans: string returned.                            */
+/*   ans_len: number of meaningful bytes of ANS       */
+/*            (ans[0]..ans[ans_len-1]).               */
+/* Return:                                            */
+/******************************************************/
+static void
+_asn1_tag_der (unsigned char class, unsigned int tag_value,
+              unsigned char ans[ASN1_MAX_TAG_SIZE], int *ans_len)
+{
+  int k;
+  unsigned char temp[ASN1_MAX_TAG_SIZE];
+
+  if (tag_value < 31)
+    {
+      /* short form */
+      ans[0] = (class & 0xE0) + ((unsigned char) (tag_value & 0x1F));
+      *ans_len = 1;
+    }
+  else
+    {
+      /* Long form */
+      ans[0] = (class & 0xE0) + 31;
+      k = 0;
+      while (tag_value != 0)
+       {
+         temp[k++] = tag_value & 0x7F;
+         tag_value >>= 7;
+
+         if (k > ASN1_MAX_TAG_SIZE - 1)
+           break;              /* will not encode larger tags */
+       }
+      *ans_len = k + 1;
+      while (k--)
+       ans[*ans_len - 1 - k] = temp[k] + 128;
+      ans[*ans_len - 1] -= 128;
+    }
+}
+
+/**
+ * asn1_octet_der:
+ * @str: the input data.
+ * @str_len: STR length (str[0]..str[*str_len-1]).
+ * @der: encoded string returned.
+ * @der_len: number of meaningful bytes of DER (der[0]..der[der_len-1]).
+ *
+ * Creates a length-value DER encoding for the input data.
+ * The DER encoding of the input data will be placed in the @der variable.
+ *
+ * Note that the OCTET STRING tag is not included in the output.
+ *
+ * This function does not return any value because it is expected
+ * that @der_len will contain enough bytes to store the string
+ * plus the DER encoding. The DER encoding size can be obtained using
+ * asn1_length_der().
+ **/
+void
+asn1_octet_der (const unsigned char *str, int str_len,
+               unsigned char *der, int *der_len)
+{
+  int len_len;
+
+  if (der == NULL || str_len < 0)
+    return;
+
+  asn1_length_der (str_len, der, &len_len);
+  memcpy (der + len_len, str, str_len);
+  *der_len = str_len + len_len;
+}
+
+
+/**
+ * asn1_encode_simple_der:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @str: the string data.
+ * @str_len: the string length
+ * @tl: the encoded tag and length
+ * @tl_len: the bytes of the @tl field
+ *
+ * Creates the DER encoding for various simple ASN.1 types like strings etc.
+ * It stores the tag and length in @tl, which should have space for at least
+ * %ASN1_MAX_TL_SIZE bytes. Initially @tl_len should contain the size of @tl.
+ *
+ * The complete DER encoding should consist of the value in @tl appended
+ * with the provided @str.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ **/
+int
+asn1_encode_simple_der (unsigned int etype, const unsigned char *str,
+                       unsigned int str_len, unsigned char *tl,
+                       unsigned int *tl_len)
+{
+  int tag_len, len_len;
+  unsigned tlen;
+  unsigned char der_tag[ASN1_MAX_TAG_SIZE];
+  unsigned char der_length[ASN1_MAX_LENGTH_SIZE];
+  unsigned char *p;
+
+  if (str == NULL)
+    return ASN1_VALUE_NOT_VALID;
+
+  if (ETYPE_OK (etype) == 0)
+    return ASN1_VALUE_NOT_VALID;
+
+  /* doesn't handle constructed classes */
+  if (ETYPE_CLASS (etype) != ASN1_CLASS_UNIVERSAL)
+    return ASN1_VALUE_NOT_VALID;
+
+  _asn1_tag_der (ETYPE_CLASS (etype), ETYPE_TAG (etype), der_tag, &tag_len);
+
+  asn1_length_der (str_len, der_length, &len_len);
+
+  if (tag_len <= 0 || len_len <= 0)
+    return ASN1_VALUE_NOT_VALID;
+
+  tlen = tag_len + len_len;
+
+  if (*tl_len < tlen)
+    return ASN1_MEM_ERROR;
+
+  p = tl;
+  memcpy (p, der_tag, tag_len);
+  p += tag_len;
+  memcpy (p, der_length, len_len);
+
+  *tl_len = tlen;
+
+  return ASN1_SUCCESS;
+}
+
+/******************************************************/
+/* Function : _asn1_time_der                          */
+/* Description: creates the DER coding for a TIME     */
+/* type (length included).                            */
+/* Parameters:                                        */
+/*   str: TIME null-terminated string.                */
+/*   der: string returned.                            */
+/*   der_len: number of meaningful bytes of DER       */
+/*            (der[0]..der[ans_len-1]). Initially it  */
+/*            if must store the lenght of DER.        */
+/* Return:                                            */
+/*   ASN1_MEM_ERROR when DER isn't big enough         */
+/*   ASN1_SUCCESS otherwise                           */
+/******************************************************/
+static int
+_asn1_time_der (unsigned char *str, int str_len, unsigned char *der,
+               int *der_len)
+{
+  int len_len;
+  int max_len;
+
+  max_len = *der_len;
+
+  asn1_length_der (str_len, (max_len > 0) ? der : NULL, &len_len);
+
+  if ((len_len + str_len) <= max_len)
+    memcpy (der + len_len, str, str_len);
+  *der_len = len_len + str_len;
+
+  if ((*der_len) > max_len)
+    return ASN1_MEM_ERROR;
+
+  return ASN1_SUCCESS;
+}
+
+
+/*
+void
+_asn1_get_utctime_der(unsigned char *der,int *der_len,unsigned char *str)
+{
+  int len_len,str_len;
+  char temp[20];
+
+  if(str==NULL) return;
+  str_len=asn1_get_length_der(der,*der_len,&len_len);
+  if (str_len<0) return;
+  memcpy(temp,der+len_len,str_len);
+  *der_len=str_len+len_len;
+  switch(str_len)
+  {
+  case 11:
+    temp[10]=0;
+    strcat(temp,"00+0000");
+    break;
+  case 13:
+    temp[12]=0;
+    strcat(temp,"+0000");
+    break;
+  case 15:
+    temp[15]=0;
+    memmove(temp+12,temp+10,6);
+    temp[10]=temp[11]='0';
+    break;
+  case 17:
+    temp[17]=0;
+    break;
+  default:
+    return;
+  }
+  strcpy(str,temp);
+}
+*/
+
+static void
+encode_val (uint64_t val, unsigned char *der, int max_len, int *der_len)
+{
+  int first, k;
+  unsigned char bit7;
+
+  first = 0;
+  for (k = sizeof (val); k >= 0; k--)
+    {
+      bit7 = (val >> (k * 7)) & 0x7F;
+      if (bit7 || first || !k)
+       {
+         if (k)
+           bit7 |= 0x80;
+         if (max_len > (*der_len))
+           der[*der_len] = bit7;
+         (*der_len)++;
+         first = 1;
+       }
+    }
+}
+
+/******************************************************/
+/* Function : _asn1_object_id_der                     */
+/* Description: creates the DER coding for an         */
+/* OBJECT IDENTIFIER  type (length included).         */
+/* Parameters:                                        */
+/*   str: OBJECT IDENTIFIER null-terminated string.   */
+/*   der: string returned.                            */
+/*   der_len: number of meaningful bytes of DER       */
+/*            (der[0]..der[ans_len-1]). Initially it  */
+/*            must store the length of DER.           */
+/* Return:                                            */
+/*   ASN1_MEM_ERROR when DER isn't big enough         */
+/*   ASN1_SUCCESS if succesful                        */
+/*   or an error value.                               */
+/******************************************************/
+static int
+_asn1_object_id_der (const char *str, unsigned char *der, int *der_len)
+{
+  int len_len, counter, max_len;
+  char *temp, *n_end, *n_start;
+  uint64_t val, val1 = 0;
+  int str_len = _asn1_strlen (str);
+
+  max_len = *der_len;
+  *der_len = 0;
+
+  if (der == NULL && max_len > 0)
+    return ASN1_VALUE_NOT_VALID;
+
+  temp = malloc (str_len + 2);
+  if (temp == NULL)
+    return ASN1_MEM_ALLOC_ERROR;
+
+  memcpy (temp, str, str_len);
+  temp[str_len] = '.';
+  temp[str_len + 1] = 0;
+
+  counter = 0;
+  n_start = temp;
+  while ((n_end = strchr (n_start, '.')))
+    {
+      *n_end = 0;
+      val = _asn1_strtou64 (n_start, NULL, 10);
+      counter++;
+
+      if (counter == 1)
+       {
+         val1 = val;
+       }
+      else if (counter == 2)
+       {
+         uint64_t val0;
+
+         if (val1 > 2)
+           {
+             free (temp);
+             return ASN1_VALUE_NOT_VALID;
+           }
+         else if ((val1 == 0 || val1 == 1) && val > 39)
+           {
+             free (temp);
+             return ASN1_VALUE_NOT_VALID;
+           }
+
+         val0 = 40 * val1 + val;
+         encode_val (val0, der, max_len, der_len);
+       }
+      else
+       {
+         encode_val (val, der, max_len, der_len);
+       }
+      n_start = n_end + 1;
+    }
+
+  asn1_length_der (*der_len, NULL, &len_len);
+  if (max_len >= (*der_len + len_len))
+    {
+      memmove (der + len_len, der, *der_len);
+      asn1_length_der (*der_len, der, &len_len);
+    }
+  *der_len += len_len;
+
+  free (temp);
+
+  if (max_len < (*der_len))
+    return ASN1_MEM_ERROR;
+
+  return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_object_id_der:
+ * @str: An object identifier in numeric, dot format.
+ * @der: buffer to hold the returned encoding (may be %NULL).
+ * @der_len: initially the size of @der; will hold the final size.
+ * @flags: must be zero
+ *
+ * Creates the DER encoding of the provided object identifier.
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding was OK, %ASN1_VALUE_NOT_VALID
+ *   if @str is not a valid OID, %ASN1_MEM_ERROR if the @der
+ *   vector isn't big enough and in this case @der_len will contain the
+ *   length needed.
+ **/
+int
+asn1_object_id_der (const char *str, unsigned char *der, int *der_len,
+                   unsigned flags)
+{
+  unsigned char tag_der[MAX_TAG_LEN];
+  int tag_len = 0, r;
+  int max_len = *der_len;
+
+  *der_len = 0;
+
+  _asn1_tag_der (ETYPE_CLASS (ASN1_ETYPE_OBJECT_ID),
+                ETYPE_TAG (ASN1_ETYPE_OBJECT_ID), tag_der, &tag_len);
+
+  if (max_len > tag_len)
+    {
+      memcpy (der, tag_der, tag_len);
+    }
+  max_len -= tag_len;
+  der += tag_len;
+
+  r = _asn1_object_id_der (str, der, &max_len);
+  if (r == ASN1_MEM_ERROR || r == ASN1_SUCCESS)
+    {
+      *der_len = max_len + tag_len;
+    }
+
+  return r;
+}
+
+static const unsigned char bit_mask[] =
+  { 0xFF, 0xFE, 0xFC, 0xF8, 0xF0, 0xE0, 0xC0, 0x80 };
+
+/**
+ * asn1_bit_der:
+ * @str: BIT string.
+ * @bit_len: number of meaningful bits in STR.
+ * @der: string returned.
+ * @der_len: number of meaningful bytes of DER
+ *   (der[0]..der[ans_len-1]).
+ *
+ * Creates a length-value DER encoding for the input data
+ * as it would have been for a BIT STRING.
+ * The DER encoded data will be copied in @der.
+ *
+ * Note that the BIT STRING tag is not included in the output.
+ *
+ * This function does not return any value because it is expected
+ * that @der_len will contain enough bytes to store the string
+ * plus the DER encoding. The DER encoding size can be obtained using
+ * asn1_length_der().
+ **/
+void
+asn1_bit_der (const unsigned char *str, int bit_len,
+             unsigned char *der, int *der_len)
+{
+  int len_len, len_byte, len_pad;
+
+  if (der == NULL)
+    return;
+
+  len_byte = bit_len >> 3;
+  len_pad = 8 - (bit_len & 7);
+  if (len_pad == 8)
+    len_pad = 0;
+  else
+    len_byte++;
+  asn1_length_der (len_byte + 1, der, &len_len);
+  der[len_len] = len_pad;
+
+  if (str)
+    memcpy (der + len_len + 1, str, len_byte);
+  der[len_len + len_byte] &= bit_mask[len_pad];
+  *der_len = len_byte + len_len + 1;
+}
+
+
+/******************************************************/
+/* Function : _asn1_complete_explicit_tag             */
+/* Description: add the length coding to the EXPLICIT */
+/* tags.                                              */
+/* Parameters:                                        */
+/*   node: pointer to the tree element.               */
+/*   der: string with the DER coding of the whole tree*/
+/*   counter: number of meaningful bytes of DER       */
+/*            (der[0]..der[*counter-1]).              */
+/*   max_len: size of der vector                      */
+/* Return:                                            */
+/*   ASN1_MEM_ERROR if der vector isn't big enough,   */
+/*   otherwise ASN1_SUCCESS.                          */
+/******************************************************/
+static int
+_asn1_complete_explicit_tag (asn1_node node, unsigned char *der,
+                            int *counter, int *max_len)
+{
+  asn1_node p;
+  int is_tag_implicit, len2, len3;
+  unsigned char temp[SIZEOF_UNSIGNED_INT];
+
+  if (der == NULL && *max_len > 0)
+    return ASN1_VALUE_NOT_VALID;
+
+  is_tag_implicit = 0;
+
+  if (node->type & CONST_TAG)
+    {
+      p = node->down;
+      if (p == NULL)
+       return ASN1_DER_ERROR;
+      /* When there are nested tags we must complete them reverse to
+         the order they were created. This is because completing a tag
+         modifies all data within it, including the incomplete tags
+         which store buffer positions -- simon@josefsson.org 2002-09-06
+       */
+      while (p->right)
+       p = p->right;
+      while (p && p != node->down->left)
+       {
+         if (type_field (p->type) == ASN1_ETYPE_TAG)
+           {
+             if (p->type & CONST_EXPLICIT)
+               {
+                 len2 = strtol (p->name, NULL, 10);
+                 _asn1_set_name (p, NULL);
+
+                 asn1_length_der (*counter - len2, temp, &len3);
+                 if (len3 <= (*max_len))
+                   {
+                     memmove (der + len2 + len3, der + len2,
+                              *counter - len2);
+                     memcpy (der + len2, temp, len3);
+                   }
+                 *max_len -= len3;
+                 *counter += len3;
+                 is_tag_implicit = 0;
+               }
+             else
+               {               /* CONST_IMPLICIT */
+                 if (!is_tag_implicit)
+                   {
+                     is_tag_implicit = 1;
+                   }
+               }
+           }
+         p = p->left;
+       }
+    }
+
+  if (*max_len < 0)
+    return ASN1_MEM_ERROR;
+
+  return ASN1_SUCCESS;
+}
+
+const tag_and_class_st _asn1_tags[] = {
+  [ASN1_ETYPE_GENERALSTRING] =
+    {ASN1_TAG_GENERALSTRING, ASN1_CLASS_UNIVERSAL, "type:GENERALSTRING"},
+  [ASN1_ETYPE_NUMERIC_STRING] =
+    {ASN1_TAG_NUMERIC_STRING, ASN1_CLASS_UNIVERSAL, "type:NUMERIC_STR"},
+  [ASN1_ETYPE_IA5_STRING] =
+    {ASN1_TAG_IA5_STRING, ASN1_CLASS_UNIVERSAL, "type:IA5_STR"},
+  [ASN1_ETYPE_TELETEX_STRING] =
+    {ASN1_TAG_TELETEX_STRING, ASN1_CLASS_UNIVERSAL, "type:TELETEX_STR"},
+  [ASN1_ETYPE_PRINTABLE_STRING] =
+    {ASN1_TAG_PRINTABLE_STRING, ASN1_CLASS_UNIVERSAL, "type:PRINTABLE_STR"},
+  [ASN1_ETYPE_UNIVERSAL_STRING] =
+    {ASN1_TAG_UNIVERSAL_STRING, ASN1_CLASS_UNIVERSAL, "type:UNIVERSAL_STR"},
+  [ASN1_ETYPE_BMP_STRING] =
+    {ASN1_TAG_BMP_STRING, ASN1_CLASS_UNIVERSAL, "type:BMP_STR"},
+  [ASN1_ETYPE_UTF8_STRING] =
+    {ASN1_TAG_UTF8_STRING, ASN1_CLASS_UNIVERSAL, "type:UTF8_STR"},
+  [ASN1_ETYPE_VISIBLE_STRING] =
+    {ASN1_TAG_VISIBLE_STRING, ASN1_CLASS_UNIVERSAL, "type:VISIBLE_STR"},
+  [ASN1_ETYPE_OCTET_STRING] =
+    {ASN1_TAG_OCTET_STRING, ASN1_CLASS_UNIVERSAL, "type:OCT_STR"},
+  [ASN1_ETYPE_BIT_STRING] =
+    {ASN1_TAG_BIT_STRING, ASN1_CLASS_UNIVERSAL, "type:BIT_STR"},
+  [ASN1_ETYPE_OBJECT_ID] =
+    {ASN1_TAG_OBJECT_ID, ASN1_CLASS_UNIVERSAL, "type:OBJ_ID"},
+  [ASN1_ETYPE_NULL] = {ASN1_TAG_NULL, ASN1_CLASS_UNIVERSAL, "type:NULL"},
+  [ASN1_ETYPE_BOOLEAN] =
+    {ASN1_TAG_BOOLEAN, ASN1_CLASS_UNIVERSAL, "type:BOOLEAN"},
+  [ASN1_ETYPE_INTEGER] =
+    {ASN1_TAG_INTEGER, ASN1_CLASS_UNIVERSAL, "type:INTEGER"},
+  [ASN1_ETYPE_ENUMERATED] =
+    {ASN1_TAG_ENUMERATED, ASN1_CLASS_UNIVERSAL, "type:ENUMERATED"},
+  [ASN1_ETYPE_SEQUENCE] =
+    {ASN1_TAG_SEQUENCE, ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED,
+     "type:SEQUENCE"},
+  [ASN1_ETYPE_SEQUENCE_OF] =
+    {ASN1_TAG_SEQUENCE, ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED,
+     "type:SEQ_OF"},
+  [ASN1_ETYPE_SET] =
+    {ASN1_TAG_SET, ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED, "type:SET"},
+  [ASN1_ETYPE_SET_OF] =
+    {ASN1_TAG_SET, ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED,
+     "type:SET_OF"},
+  [ASN1_ETYPE_GENERALIZED_TIME] =
+    {ASN1_TAG_GENERALIZEDTime, ASN1_CLASS_UNIVERSAL, "type:GENERALIZED_TIME"},
+  [ASN1_ETYPE_UTC_TIME] =
+    {ASN1_TAG_UTCTime, ASN1_CLASS_UNIVERSAL, "type:UTC_TIME"},
+};
+
+unsigned int _asn1_tags_size = sizeof (_asn1_tags) / sizeof (_asn1_tags[0]);
+
+/******************************************************/
+/* Function : _asn1_insert_tag_der                    */
+/* Description: creates the DER coding of tags of one */
+/* NODE.                                              */
+/* Parameters:                                        */
+/*   node: pointer to the tree element.               */
+/*   der: string returned                             */
+/*   counter: number of meaningful bytes of DER       */
+/*            (counter[0]..der[*counter-1]).          */
+/*   max_len: size of der vector                      */
+/* Return:                                            */
+/*   ASN1_GENERIC_ERROR if the type is unknown,       */
+/*   ASN1_MEM_ERROR if der vector isn't big enough,   */
+/*   otherwise ASN1_SUCCESS.                          */
+/******************************************************/
+static int
+_asn1_insert_tag_der (asn1_node node, unsigned char *der, int *counter,
+                     int *max_len)
+{
+  asn1_node p;
+  int tag_len, is_tag_implicit;
+  unsigned char class, class_implicit =
+    0, temp[MAX (SIZEOF_UNSIGNED_INT * 3 + 1, LTOSTR_MAX_SIZE)];
+  unsigned long tag_implicit = 0;
+  unsigned char tag_der[MAX_TAG_LEN];
+
+  is_tag_implicit = 0;
+
+  if (node->type & CONST_TAG)
+    {
+      p = node->down;
+      while (p)
+       {
+         if (type_field (p->type) == ASN1_ETYPE_TAG)
+           {
+             if (p->type & CONST_APPLICATION)
+               class = ASN1_CLASS_APPLICATION;
+             else if (p->type & CONST_UNIVERSAL)
+               class = ASN1_CLASS_UNIVERSAL;
+             else if (p->type & CONST_PRIVATE)
+               class = ASN1_CLASS_PRIVATE;
+             else
+               class = ASN1_CLASS_CONTEXT_SPECIFIC;
+
+             if (p->type & CONST_EXPLICIT)
+               {
+                 if (is_tag_implicit)
+                   _asn1_tag_der (class_implicit, tag_implicit, tag_der,
+                                  &tag_len);
+                 else
+                   _asn1_tag_der (class | ASN1_CLASS_STRUCTURED,
+                                  _asn1_strtoul (p->value, NULL, 10),
+                                  tag_der, &tag_len);
+
+                 *max_len -= tag_len;
+                 if (der && *max_len >= 0)
+                   memcpy (der + *counter, tag_der, tag_len);
+                 *counter += tag_len;
+
+                 _asn1_ltostr (*counter, (char *) temp);
+                 _asn1_set_name (p, (const char *) temp);
+
+                 is_tag_implicit = 0;
+               }
+             else
+               {               /* CONST_IMPLICIT */
+                 if (!is_tag_implicit)
+                   {
+                     if ((type_field (node->type) == ASN1_ETYPE_SEQUENCE) ||
+                         (type_field (node->type) == ASN1_ETYPE_SEQUENCE_OF)
+                         || (type_field (node->type) == ASN1_ETYPE_SET)
+                         || (type_field (node->type) == ASN1_ETYPE_SET_OF))
+                       class |= ASN1_CLASS_STRUCTURED;
+                     class_implicit = class;
+                     tag_implicit = _asn1_strtoul (p->value, NULL, 10);
+                     is_tag_implicit = 1;
+                   }
+               }
+           }
+         p = p->right;
+       }
+    }
+
+  if (is_tag_implicit)
+    {
+      _asn1_tag_der (class_implicit, tag_implicit, tag_der, &tag_len);
+    }
+  else
+    {
+      unsigned type = type_field (node->type);
+      switch (type)
+       {
+       CASE_HANDLED_ETYPES:
+         _asn1_tag_der (_asn1_tags[type].class, _asn1_tags[type].tag,
+                        tag_der, &tag_len);
+         break;
+       case ASN1_ETYPE_TAG:
+       case ASN1_ETYPE_CHOICE:
+       case ASN1_ETYPE_ANY:
+         tag_len = 0;
+         break;
+       default:
+         return ASN1_GENERIC_ERROR;
+       }
+    }
+
+  *max_len -= tag_len;
+  if (der && *max_len >= 0)
+    memcpy (der + *counter, tag_der, tag_len);
+  *counter += tag_len;
+
+  if (*max_len < 0)
+    return ASN1_MEM_ERROR;
+
+  return ASN1_SUCCESS;
+}
+
+/******************************************************/
+/* Function : _asn1_ordering_set                      */
+/* Description: puts the elements of a SET type in    */
+/* the correct order according to DER rules.          */
+/* Parameters:                                        */
+/*   der: string with the DER coding.                 */
+/*   node: pointer to the SET element.                */
+/* Return:                                            */
+/*    ASN1_SUCCESS if successful                      */
+/*    or an error value.                              */
+/******************************************************/
+static int
+_asn1_ordering_set (unsigned char *der, int der_len, asn1_node node)
+{
+  struct vet
+  {
+    int end;
+    unsigned long value;
+    struct vet *next, *prev;
+  };
+
+  int counter, len, len2;
+  struct vet *first, *last, *p_vet, *p2_vet;
+  asn1_node p;
+  unsigned char class, *temp;
+  unsigned long tag, t;
+  int err;
+
+  counter = 0;
+
+  if (type_field (node->type) != ASN1_ETYPE_SET)
+    return ASN1_VALUE_NOT_VALID;
+
+  p = node->down;
+  while (p && ((type_field (p->type) == ASN1_ETYPE_TAG) ||
+              (type_field (p->type) == ASN1_ETYPE_SIZE)))
+    p = p->right;
+
+  if ((p == NULL) || (p->right == NULL))
+    return ASN1_SUCCESS;
+
+  first = last = NULL;
+  while (p)
+    {
+      p_vet = malloc (sizeof (struct vet));
+      if (p_vet == NULL)
+       {
+         err = ASN1_MEM_ALLOC_ERROR;
+         goto error;
+       }
+
+      p_vet->next = NULL;
+      p_vet->prev = last;
+      if (first == NULL)
+       first = p_vet;
+      else
+       last->next = p_vet;
+      last = p_vet;
+
+      /* tag value calculation */
+      err = asn1_get_tag_der (der + counter, der_len - counter, &class, &len2,
+                             &tag);
+      if (err != ASN1_SUCCESS)
+       goto error;
+
+      t = ((unsigned int) class) << 24;
+      p_vet->value = t | tag;
+      counter += len2;
+
+      /* extraction and length */
+      len2 = asn1_get_length_der (der + counter, der_len - counter, &len);
+      if (len2 < 0)
+       {
+         err = ASN1_DER_ERROR;
+         goto error;
+       }
+      counter += len + len2;
+
+      p_vet->end = counter;
+      p = p->right;
+    }
+
+  p_vet = first;
+
+  while (p_vet)
+    {
+      p2_vet = p_vet->next;
+      counter = 0;
+      while (p2_vet)
+       {
+         if (p_vet->value > p2_vet->value)
+           {
+             /* change position */
+             temp = malloc (p_vet->end - counter);
+             if (temp == NULL)
+               {
+                 err = ASN1_MEM_ALLOC_ERROR;
+                 goto error;
+               }
+
+             memcpy (temp, der + counter, p_vet->end - counter);
+             memcpy (der + counter, der + p_vet->end,
+                     p2_vet->end - p_vet->end);
+             memcpy (der + counter + p2_vet->end - p_vet->end, temp,
+                     p_vet->end - counter);
+             free (temp);
+
+             tag = p_vet->value;
+             p_vet->value = p2_vet->value;
+             p2_vet->value = tag;
+
+             p_vet->end = counter + (p2_vet->end - p_vet->end);
+           }
+         counter = p_vet->end;
+
+         p2_vet = p2_vet->next;
+         p_vet = p_vet->next;
+       }
+
+      if (p_vet != first)
+       p_vet->prev->next = NULL;
+      else
+       first = NULL;
+      free (p_vet);
+      p_vet = first;
+    }
+  return ASN1_SUCCESS;
+
+error:
+  while (first != NULL)
+    {
+      p_vet = first;
+      first = first->next;
+      free (p_vet);
+    }
+  return err;
+}
+
+struct vet
+{
+  unsigned char *ptr;
+  int size;
+};
+
+static int
+setof_compar (const void *_e1, const void *_e2)
+{
+  unsigned length;
+  const struct vet *e1 = _e1, *e2 = _e2;
+  int rval;
+
+  /* The encodings of the component values of a set-of value shall
+   * appear in ascending order, the encodings being compared
+   * as octet strings with the shorter components being
+   * padded at their trailing end with 0-octets.
+   * The padding octets are for comparison purposes and
+   * do not appear in the encodings.
+   */
+  length = MIN (e1->size, e2->size);
+
+  rval = memcmp (e1->ptr, e2->ptr, length);
+  if (rval == 0 && e1->size != e2->size)
+    {
+      if (e1->size > e2->size)
+       rval = 1;
+      else if (e2->size > e1->size)
+       rval = -1;
+    }
+
+  return rval;
+}
+
+/******************************************************/
+/* Function : _asn1_ordering_set_of                   */
+/* Description: puts the elements of a SET OF type in */
+/* the correct order according to DER rules.          */
+/* Parameters:                                        */
+/*   der: string with the DER coding.                 */
+/*   node: pointer to the SET OF element.             */
+/* Return:                                            */
+/*    ASN1_SUCCESS if successful                      */
+/*    or an error value.                              */
+/******************************************************/
+static int
+_asn1_ordering_set_of (unsigned char *der, int der_len, asn1_node node)
+{
+  int counter, len, len2;
+  struct vet *list = NULL, *tlist;
+  unsigned list_size = 0;
+  struct vet *p_vet;
+  asn1_node p;
+  unsigned char class;
+  unsigned i;
+  unsigned char *out = NULL;
+  int err;
+
+  counter = 0;
+
+  if (type_field (node->type) != ASN1_ETYPE_SET_OF)
+    return ASN1_VALUE_NOT_VALID;
+
+  p = node->down;
+  while (p && ((type_field (p->type) == ASN1_ETYPE_TAG) ||
+              (type_field (p->type) == ASN1_ETYPE_SIZE)))
+    p = p->right;
+  if (p == NULL)
+    return ASN1_VALUE_NOT_VALID;
+  p = p->right;
+
+  if ((p == NULL) || (p->right == NULL))
+    return ASN1_SUCCESS;
+
+  while (p)
+    {
+      list_size++;
+      tlist = realloc (list, list_size * sizeof (struct vet));
+      if (tlist == NULL)
+       {
+         err = ASN1_MEM_ALLOC_ERROR;
+         goto error;
+       }
+      list = tlist;
+      p_vet = &list[list_size - 1];
+
+      p_vet->ptr = der + counter;
+      p_vet->size = 0;
+
+      /* extraction of tag and length */
+      if (der_len - counter > 0)
+       {
+         err = asn1_get_tag_der (der + counter, der_len - counter, &class,
+                                 &len, NULL);
+         if (err != ASN1_SUCCESS)
+           goto error;
+         counter += len;
+         p_vet->size += len;
+
+         len2 = asn1_get_length_der (der + counter, der_len - counter, &len);
+         if (len2 < 0)
+           {
+             err = ASN1_DER_ERROR;
+             goto error;
+           }
+         counter += len + len2;
+         p_vet->size += len + len2;
+
+       }
+      else
+       {
+         err = ASN1_DER_ERROR;
+         goto error;
+       }
+      p = p->right;
+    }
+
+  if (counter > der_len)
+    {
+      err = ASN1_DER_ERROR;
+      goto error;
+    }
+
+  qsort (list, list_size, sizeof (struct vet), setof_compar);
+
+  out = malloc (der_len);
+  if (out == NULL)
+    {
+      err = ASN1_MEM_ERROR;
+      goto error;
+    }
+
+  /* the sum of p_vet->size == der_len */
+  counter = 0;
+  for (i = 0; i < list_size; i++)
+    {
+      p_vet = &list[i];
+      memcpy (out + counter, p_vet->ptr, p_vet->size);
+      counter += p_vet->size;
+    }
+  memcpy (der, out, der_len);
+  free (out);
+
+  err = ASN1_SUCCESS;
+
+error:
+  free (list);
+  return err;
+}
+
+/**
+ * asn1_der_coding:
+ * @element: pointer to an ASN1 element
+ * @name: the name of the structure you want to encode (it must be
+ *   inside *POINTER).
+ * @ider: vector that will contain the DER encoding. DER must be a
+ *   pointer to memory cells already allocated.
+ * @len: number of bytes of *@ider: @ider[0]..@ider[len-1], Initialy
+ *   holds the sizeof of der vector.
+ * @ErrorDescription: return the error description or an empty
+ *   string if success.
+ *
+ * Creates the DER encoding for the NAME structure (inside *POINTER
+ * structure).
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ *   if @name is not a valid element, %ASN1_VALUE_NOT_FOUND if there
+ *   is an element without a value, %ASN1_MEM_ERROR if the @ider
+ *   vector isn't big enough and in this case @len will contain the
+ *   length needed.
+ **/
+int
+asn1_der_coding (asn1_node_const element, const char *name, void *ider,
+                int *len, char *ErrorDescription)
+{
+  asn1_node node, p, p2;
+  unsigned char temp[MAX (LTOSTR_MAX_SIZE, SIZEOF_UNSIGNED_LONG_INT * 3 + 1)];
+  int counter, counter_old, len2, len3, move, max_len, max_len_old;
+  int err;
+  unsigned char *der = ider;
+  unsigned char dummy;
+
+  if (ErrorDescription)
+    ErrorDescription[0] = 0;
+
+  node = asn1_find_node (element, name);
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  /* Node is now a locally allocated variable.
+   * That is because in some point we modify the
+   * structure, and I don't know why! --nmav
+   */
+  node = _asn1_copy_structure3 (node);
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  max_len = *len;
+
+  if (der == NULL && max_len > 0)
+    {
+      err = ASN1_VALUE_NOT_VALID;
+      goto error;
+    }
+
+  counter = 0;
+  move = DOWN;
+  p = node;
+
+  while (1)
+    {
+
+      counter_old = counter;
+      max_len_old = max_len;
+      if (move != UP)
+       {
+         p->start = counter;
+         err = _asn1_insert_tag_der (p, der, &counter, &max_len);
+         if (err != ASN1_SUCCESS && err != ASN1_MEM_ERROR)
+           goto error;
+       }
+      switch (type_field (p->type))
+       {
+       case ASN1_ETYPE_NULL:
+         max_len--;
+         if (der != NULL && max_len >= 0)
+           der[counter] = 0;
+         counter++;
+         move = RIGHT;
+         break;
+       case ASN1_ETYPE_BOOLEAN:
+         if ((p->type & CONST_DEFAULT) && (p->value == NULL))
+           {
+             counter = counter_old;
+             max_len = max_len_old;
+           }
+         else
+           {
+             if (p->value == NULL)
+               {
+                 _asn1_error_description_value_not_found (p,
+                                                          ErrorDescription);
+                 err = ASN1_VALUE_NOT_FOUND;
+                 goto error;
+               }
+             max_len -= 2;
+             if (der != NULL && max_len >= 0)
+               {
+                 der[counter++] = 1;
+                 if (p->value[0] == 'F')
+                   der[counter++] = 0;
+                 else
+                   der[counter++] = 0xFF;
+               }
+             else
+               counter += 2;
+           }
+         move = RIGHT;
+         break;
+       case ASN1_ETYPE_INTEGER:
+       case ASN1_ETYPE_ENUMERATED:
+         if ((p->type & CONST_DEFAULT) && (p->value == NULL))
+           {
+             counter = counter_old;
+             max_len = max_len_old;
+           }
+         else
+           {
+             if (p->value == NULL)
+               {
+                 _asn1_error_description_value_not_found (p,
+                                                          ErrorDescription);
+                 err = ASN1_VALUE_NOT_FOUND;
+                 goto error;
+               }
+             len2 = asn1_get_length_der (p->value, p->value_len, &len3);
+             if (len2 < 0)
+               {
+                 err = ASN1_DER_ERROR;
+                 goto error;
+               }
+             max_len -= len2 + len3;
+             if (der != NULL && max_len >= 0)
+               memcpy (der + counter, p->value, len3 + len2);
+             counter += len3 + len2;
+           }
+         move = RIGHT;
+         break;
+       case ASN1_ETYPE_OBJECT_ID:
+         if ((p->type & CONST_DEFAULT) && (p->value == NULL))
+           {
+             counter = counter_old;
+             max_len = max_len_old;
+           }
+         else
+           {
+             if (p->value == NULL)
+               {
+                 _asn1_error_description_value_not_found (p,
+                                                          ErrorDescription);
+                 err = ASN1_VALUE_NOT_FOUND;
+                 goto error;
+               }
+             len2 = max_len;
+             err =
+               _asn1_object_id_der ((char *) p->value,
+                                    der ? der + counter : &dummy, &len2);
+             if (err != ASN1_SUCCESS && err != ASN1_MEM_ERROR)
+               goto error;
+
+             max_len -= len2;
+             counter += len2;
+           }
+         move = RIGHT;
+         break;
+       case ASN1_ETYPE_GENERALIZED_TIME:
+       case ASN1_ETYPE_UTC_TIME:
+         if (p->value == NULL)
+           {
+             _asn1_error_description_value_not_found (p, ErrorDescription);
+             err = ASN1_VALUE_NOT_FOUND;
+             goto error;
+           }
+         len2 = max_len;
+         err =
+           _asn1_time_der (p->value, p->value_len,
+                           der ? der + counter : &dummy, &len2);
+         if (err != ASN1_SUCCESS && err != ASN1_MEM_ERROR)
+           goto error;
+
+         max_len -= len2;
+         counter += len2;
+         move = RIGHT;
+         break;
+       case ASN1_ETYPE_OCTET_STRING:
+       case ASN1_ETYPE_GENERALSTRING:
+       case ASN1_ETYPE_NUMERIC_STRING:
+       case ASN1_ETYPE_IA5_STRING:
+       case ASN1_ETYPE_TELETEX_STRING:
+       case ASN1_ETYPE_PRINTABLE_STRING:
+       case ASN1_ETYPE_UNIVERSAL_STRING:
+       case ASN1_ETYPE_BMP_STRING:
+       case ASN1_ETYPE_UTF8_STRING:
+       case ASN1_ETYPE_VISIBLE_STRING:
+       case ASN1_ETYPE_BIT_STRING:
+         if (p->value == NULL)
+           {
+             _asn1_error_description_value_not_found (p, ErrorDescription);
+             err = ASN1_VALUE_NOT_FOUND;
+             goto error;
+           }
+         len2 = asn1_get_length_der (p->value, p->value_len, &len3);
+         if (len2 < 0)
+           {
+             err = ASN1_DER_ERROR;
+             goto error;
+           }
+         max_len -= len2 + len3;
+         if (der != NULL && max_len >= 0)
+           memcpy (der + counter, p->value, len3 + len2);
+         counter += len3 + len2;
+         move = RIGHT;
+         break;
+       case ASN1_ETYPE_SEQUENCE:
+       case ASN1_ETYPE_SET:
+         if (move != UP)
+           {
+             p->tmp_ival = counter;
+             if (p->down == NULL)
+               {
+                 move = UP;
+                 continue;
+               }
+             else
+               {
+                 p2 = p->down;
+                 while (p2 && (type_field (p2->type) == ASN1_ETYPE_TAG))
+                   p2 = p2->right;
+                 if (p2)
+                   {
+                     p = p2;
+                     move = RIGHT;
+                     continue;
+                   }
+                 move = UP;
+                 continue;
+               }
+           }
+         else
+           {                   /* move==UP */
+             len2 = p->tmp_ival;
+             p->tmp_ival = 0;
+             if ((type_field (p->type) == ASN1_ETYPE_SET) && (max_len >= 0))
+               {
+                 err =
+                   _asn1_ordering_set (der ? der + len2 : &dummy,
+                                       counter - len2, p);
+                 if (err != ASN1_SUCCESS)
+                   goto error;
+               }
+             asn1_length_der (counter - len2, temp, &len3);
+             max_len -= len3;
+             if (der != NULL && max_len >= 0)
+               {
+                 memmove (der + len2 + len3, der + len2, counter - len2);
+                 memcpy (der + len2, temp, len3);
+               }
+             counter += len3;
+             move = RIGHT;
+           }
+         break;
+       case ASN1_ETYPE_SEQUENCE_OF:
+       case ASN1_ETYPE_SET_OF:
+         if (move != UP)
+           {
+             p->tmp_ival = counter;
+             p = p->down;
+             while ((type_field (p->type) == ASN1_ETYPE_TAG)
+                    || (type_field (p->type) == ASN1_ETYPE_SIZE))
+               p = p->right;
+             if (p->right)
+               {
+                 p = p->right;
+                 move = RIGHT;
+                 continue;
+               }
+             else
+               p = _asn1_find_up (p);
+             move = UP;
+           }
+         if (move == UP)
+           {
+             len2 = p->tmp_ival;
+             p->tmp_ival = 0;
+             if ((type_field (p->type) == ASN1_ETYPE_SET_OF)
+                 && (counter - len2 > 0) && (max_len >= 0))
+               {
+                 err =
+                   _asn1_ordering_set_of (der ? der + len2 : &dummy,
+                                          counter - len2, p);
+                 if (err != ASN1_SUCCESS)
+                   goto error;
+               }
+             asn1_length_der (counter - len2, temp, &len3);
+             max_len -= len3;
+             if (der != NULL && max_len >= 0)
+               {
+                 memmove (der + len2 + len3, der + len2, counter - len2);
+                 memcpy (der + len2, temp, len3);
+               }
+             counter += len3;
+             move = RIGHT;
+           }
+         break;
+       case ASN1_ETYPE_ANY:
+         if (p->value == NULL)
+           {
+             _asn1_error_description_value_not_found (p, ErrorDescription);
+             err = ASN1_VALUE_NOT_FOUND;
+             goto error;
+           }
+         len2 = asn1_get_length_der (p->value, p->value_len, &len3);
+         if (len2 < 0)
+           {
+             err = ASN1_DER_ERROR;
+             goto error;
+           }
+         max_len -= len2;
+         if (der != NULL && max_len >= 0)
+           memcpy (der + counter, p->value + len3, len2);
+         counter += len2;
+         move = RIGHT;
+         break;
+       default:
+         move = (move == UP) ? RIGHT : DOWN;
+         break;
+       }
+
+      if ((move != DOWN) && (counter != counter_old))
+       {
+         p->end = counter - 1;
+         err = _asn1_complete_explicit_tag (p, der, &counter, &max_len);
+         if (err != ASN1_SUCCESS && err != ASN1_MEM_ERROR)
+           goto error;
+       }
+
+      if (p == node && move != DOWN)
+       break;
+
+      if (move == DOWN)
+       {
+         if (p->down)
+           p = p->down;
+         else
+           move = RIGHT;
+       }
+      if (move == RIGHT)
+       {
+         if (p->right)
+           p = p->right;
+         else
+           move = UP;
+       }
+      if (move == UP)
+       p = _asn1_find_up (p);
+    }
+
+  *len = counter;
+
+  if (max_len < 0)
+    {
+      err = ASN1_MEM_ERROR;
+      goto error;
+    }
+
+  err = ASN1_SUCCESS;
+
+error:
+  asn1_delete_structure (&node);
+  return err;
+}
diff --git a/grub-core/lib/libtasn1/lib/decoding.c 
b/grub-core/lib/libtasn1/lib/decoding.c
new file mode 100644
index 000000000..b9245c486
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/decoding.c
@@ -0,0 +1,2501 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+
+/*****************************************************/
+/* File: decoding.c                                  */
+/* Description: Functions to manage DER decoding     */
+/*****************************************************/
+
+#include <int.h>
+#include <parser_aux.h>
+#include <gstr.h>
+#include <structure.h>
+#include <element.h>
+#include <limits.h>
+#include <intprops.h>
+#include "c-ctype.h"
+
+#ifdef DEBUG
+# define warn() fprintf(stderr, "%s: %d\n", __func__, __LINE__)
+#else
+# define warn()
+#endif
+
+#define IS_ERR(len, flags) (len < -1 || ((flags & ASN1_DECODE_FLAG_STRICT_DER) 
&& len < 0))
+
+#define HAVE_TWO(x) (x>=2?1:0)
+
+/* Decoding flags (dflags) used in several decoding functions.
+ *  DECODE_FLAG_HAVE_TAG: The provided buffer includes a tag
+ *  DECODE_FLAG_CONSTRUCTED: The provided buffer is of indefinite encoding 
(useful
+ *                           when no tags are present).
+ *  DECODE_FLAG_LEVEL1: Internal flag to indicate a level of recursion for BER 
strings.
+ *  DECODE_FLAG_LEVEL2: Internal flag to indicate two levels of recursion for 
BER strings.
+ *  DECODE_FLAG_LEVEL3: Internal flag to indicate three levels of recursion 
for BER strings.
+ *                      This is the maximum levels of recursion possible to 
prevent stack
+ *                      exhaustion.
+ */
+
+#define DECODE_FLAG_HAVE_TAG 1
+#define DECODE_FLAG_CONSTRUCTED (1<<1)
+#define DECODE_FLAG_LEVEL1 (1<<2)
+#define DECODE_FLAG_LEVEL2 (1<<3)
+#define DECODE_FLAG_LEVEL3 (1<<4)
+
+#define DECR_LEN(l, s) do { \
+         l -= s; \
+         if (l < 0) { \
+           warn(); \
+           result = ASN1_DER_ERROR; \
+           goto cleanup; \
+         } \
+       } while (0)
+
+static int
+_asn1_get_indefinite_length_string (const unsigned char *der, int der_len,
+                                   int *len);
+
+static int
+_asn1_decode_simple_ber (unsigned int etype, const unsigned char *der,
+                        unsigned int _der_len, unsigned char **str,
+                        unsigned int *str_len, unsigned int *ber_len,
+                        unsigned dflags);
+
+static int
+_asn1_decode_simple_der (unsigned int etype, const unsigned char *der,
+                        unsigned int _der_len, const unsigned char **str,
+                        unsigned int *str_len, unsigned dflags);
+
+static void
+_asn1_error_description_tag_error (asn1_node node, char *ErrorDescription)
+{
+
+  Estrcpy (ErrorDescription, ":: tag error near element '");
+  _asn1_hierarchical_name (node, ErrorDescription + strlen (ErrorDescription),
+                          ASN1_MAX_ERROR_DESCRIPTION_SIZE - 40);
+  Estrcat (ErrorDescription, "'");
+
+}
+
+/**
+ * asn1_get_length_der:
+ * @der: DER data to decode.
+ * @der_len: Length of DER data to decode.
+ * @len: Output variable containing the length of the DER length field.
+ *
+ * Extract a length field from DER data.
+ *
+ * Returns: Return the decoded length value, or -1 on indefinite
+ *   length, or -2 when the value was too big to fit in a int, or -4
+ *   when the decoded length value plus @len would exceed @der_len.
+ **/
+long
+asn1_get_length_der (const unsigned char *der, int der_len, int *len)
+{
+  unsigned int ans;
+  int k, punt, sum;
+
+  *len = 0;
+  if (der_len <= 0)
+    return 0;
+
+  if (!(der[0] & 128))
+    {
+      /* short form */
+      *len = 1;
+      ans = der[0];
+    }
+  else
+    {
+      /* Long form */
+      k = der[0] & 0x7F;
+      punt = 1;
+      if (k)
+       {                       /* definite length method */
+         ans = 0;
+         while (punt <= k && punt < der_len)
+           {
+             if (INT_MULTIPLY_OVERFLOW (ans, 256))
+               return -2;
+             ans *= 256;
+
+             if (INT_ADD_OVERFLOW (ans, ((unsigned) der[punt])))
+               return -2;
+             ans += der[punt];
+             punt++;
+           }
+       }
+      else
+       {                       /* indefinite length method */
+         *len = punt;
+         return -1;
+       }
+
+      *len = punt;
+    }
+
+  sum = ans;
+  if (ans >= INT_MAX || INT_ADD_OVERFLOW (sum, (*len)))
+    return -2;
+  sum += *len;
+
+  if (sum > der_len)
+    return -4;
+
+  return ans;
+}
+
+/**
+ * asn1_get_tag_der:
+ * @der: DER data to decode.
+ * @der_len: Length of DER data to decode.
+ * @cls: Output variable containing decoded class.
+ * @len: Output variable containing the length of the DER TAG data.
+ * @tag: Output variable containing the decoded tag (may be %NULL).
+ *
+ * Decode the class and TAG from DER code.
+ *
+ * Returns: Returns %ASN1_SUCCESS on success, or an error.
+ **/
+int
+asn1_get_tag_der (const unsigned char *der, int der_len,
+                 unsigned char *cls, int *len, unsigned long *tag)
+{
+  unsigned int ris;
+  int punt;
+
+  if (der == NULL || der_len < 2 || len == NULL)
+    return ASN1_DER_ERROR;
+
+  *cls = der[0] & 0xE0;
+  if ((der[0] & 0x1F) != 0x1F)
+    {
+      /* short form */
+      *len = 1;
+      ris = der[0] & 0x1F;
+    }
+  else
+    {
+      /* Long form */
+      punt = 1;
+      ris = 0;
+      while (punt < der_len && der[punt] & 128)
+       {
+
+         if (INT_MULTIPLY_OVERFLOW (ris, 128))
+           return ASN1_DER_ERROR;
+         ris *= 128;
+
+         if (INT_ADD_OVERFLOW (ris, ((unsigned) (der[punt] & 0x7F))))
+           return ASN1_DER_ERROR;
+         ris += (der[punt] & 0x7F);
+         punt++;
+       }
+
+      if (punt >= der_len)
+       return ASN1_DER_ERROR;
+
+      if (INT_MULTIPLY_OVERFLOW (ris, 128))
+       return ASN1_DER_ERROR;
+      ris *= 128;
+
+      if (INT_ADD_OVERFLOW (ris, ((unsigned) (der[punt] & 0x7F))))
+       return ASN1_DER_ERROR;
+      ris += (der[punt] & 0x7F);
+      punt++;
+
+      *len = punt;
+    }
+
+  if (tag)
+    *tag = ris;
+  return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_get_length_ber:
+ * @ber: BER data to decode.
+ * @ber_len: Length of BER data to decode.
+ * @len: Output variable containing the length of the BER length field.
+ *
+ * Extract a length field from BER data.  The difference to
+ * asn1_get_length_der() is that this function will return a length
+ * even if the value has indefinite encoding.
+ *
+ * Returns: Return the decoded length value, or negative value when
+ *   the value was too big.
+ *
+ * Since: 2.0
+ **/
+long
+asn1_get_length_ber (const unsigned char *ber, int ber_len, int *len)
+{
+  int ret;
+  long err;
+
+  ret = asn1_get_length_der (ber, ber_len, len);
+
+  if (ret == -1 && ber_len > 1)
+    {                          /* indefinite length method */
+      err = _asn1_get_indefinite_length_string (ber + 1, ber_len - 1, &ret);
+      if (err != ASN1_SUCCESS)
+       return -3;
+    }
+
+  return ret;
+}
+
+/**
+ * asn1_get_octet_der:
+ * @der: DER data to decode containing the OCTET SEQUENCE.
+ * @der_len: The length of the @der data to decode.
+ * @ret_len: Output variable containing the encoded length of the DER data.
+ * @str: Pre-allocated output buffer to put decoded OCTET SEQUENCE in.
+ * @str_size: Length of pre-allocated output buffer.
+ * @str_len: Output variable containing the length of the contents of the 
OCTET SEQUENCE.
+ *
+ * Extract an OCTET SEQUENCE from DER data. Note that this function
+ * expects the DER data past the tag field, i.e., the length and
+ * content octets.
+ *
+ * Returns: Returns %ASN1_SUCCESS on success, or an error.
+ **/
+int
+asn1_get_octet_der (const unsigned char *der, int der_len,
+                   int *ret_len, unsigned char *str, int str_size,
+                   int *str_len)
+{
+  int len_len = 0;
+
+  if (der_len <= 0)
+    return ASN1_GENERIC_ERROR;
+
+  *str_len = asn1_get_length_der (der, der_len, &len_len);
+
+  if (*str_len < 0)
+    return ASN1_DER_ERROR;
+
+  *ret_len = *str_len + len_len;
+  if (str_size >= *str_len)
+    {
+      if (*str_len > 0 && str != NULL)
+       memcpy (str, der + len_len, *str_len);
+    }
+  else
+    {
+      return ASN1_MEM_ERROR;
+    }
+
+  return ASN1_SUCCESS;
+}
+
+
+/*-
+ * _asn1_get_time_der:
+ * @type: %ASN1_ETYPE_GENERALIZED_TIME or %ASN1_ETYPE_UTC_TIME
+ * @der: DER data to decode containing the time
+ * @der_len: Length of DER data to decode.
+ * @ret_len: Output variable containing the length of the DER data.
+ * @str: Pre-allocated output buffer to put the textual time in.
+ * @str_size: Length of pre-allocated output buffer.
+ * @flags: Zero or %ASN1_DECODE_FLAG_STRICT_DER
+ *
+ * Performs basic checks in the DER encoded time object and returns its 
textual form.
+ * The textual form will be in the YYYYMMDD000000Z format for GeneralizedTime
+ * and YYMMDD000000Z for UTCTime.
+ *
+ * Returns: %ASN1_SUCCESS on success, or an error.
+ -*/
+static int
+_asn1_get_time_der (unsigned type, const unsigned char *der, int der_len,
+                   int *ret_len, char *str, int str_size, unsigned flags)
+{
+  int len_len, str_len;
+  unsigned i;
+  unsigned sign_count = 0;
+  unsigned dot_count = 0;
+  const unsigned char *p;
+
+  if (der_len <= 0 || str == NULL)
+    return ASN1_DER_ERROR;
+
+  str_len = asn1_get_length_der (der, der_len, &len_len);
+  if (str_len <= 0 || str_size < str_len)
+    return ASN1_DER_ERROR;
+
+  /* perform some sanity checks on the data */
+  if (str_len < 8)
+    {
+      warn ();
+      return ASN1_TIME_ENCODING_ERROR;
+    }
+
+  if ((flags & ASN1_DECODE_FLAG_STRICT_DER)
+      && !(flags & ASN1_DECODE_FLAG_ALLOW_INCORRECT_TIME))
+    {
+      p = &der[len_len];
+      for (i = 0; i < (unsigned) (str_len - 1); i++)
+       {
+         if (c_isdigit (p[i]) == 0)
+           {
+             if (type == ASN1_ETYPE_GENERALIZED_TIME)
+               {
+                 /* tolerate lax encodings */
+                 if (p[i] == '.' && dot_count == 0)
+                   {
+                     dot_count++;
+                     continue;
+                   }
+
+                 /* This is not really valid DER, but there are
+                  * structures using that */
+                 if (!(flags & ASN1_DECODE_FLAG_STRICT_DER) &&
+                     (p[i] == '+' || p[i] == '-') && sign_count == 0)
+                   {
+                     sign_count++;
+                     continue;
+                   }
+               }
+
+             warn ();
+             return ASN1_TIME_ENCODING_ERROR;
+           }
+       }
+
+      if (sign_count == 0 && p[str_len - 1] != 'Z')
+       {
+         warn ();
+         return ASN1_TIME_ENCODING_ERROR;
+       }
+    }
+  memcpy (str, der + len_len, str_len);
+  str[str_len] = 0;
+  *ret_len = str_len + len_len;
+
+  return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_get_object_id_der:
+ * @der: DER data to decode containing the OBJECT IDENTIFIER
+ * @der_len: Length of DER data to decode.
+ * @ret_len: Output variable containing the length of the DER data.
+ * @str: Pre-allocated output buffer to put the textual object id in.
+ * @str_size: Length of pre-allocated output buffer.
+ *
+ * Converts a DER encoded object identifier to its textual form. This
+ * function expects the DER object identifier without the tag.
+ *
+ * Returns: %ASN1_SUCCESS on success, or an error.
+ **/
+int
+asn1_get_object_id_der (const unsigned char *der, int der_len, int *ret_len,
+                       char *str, int str_size)
+{
+  int len_len, len, k;
+  int leading, parsed;
+  char temp[LTOSTR_MAX_SIZE];
+  uint64_t val, val1, val0;
+
+  *ret_len = 0;
+  if (str && str_size > 0)
+    str[0] = 0;                        /* no oid */
+
+  if (str == NULL || der_len <= 0)
+    return ASN1_GENERIC_ERROR;
+
+  len = asn1_get_length_der (der, der_len, &len_len);
+
+  if (len <= 0 || len + len_len > der_len)
+    return ASN1_DER_ERROR;
+
+  /* leading octet can never be 0x80 */
+  if (der[len_len] == 0x80)
+    return ASN1_DER_ERROR;
+
+  val0 = 0;
+
+  for (k = 0; k < len; k++)
+    {
+      if (INT_LEFT_SHIFT_OVERFLOW (val0, 7))
+       return ASN1_DER_ERROR;
+
+      val0 <<= 7;
+      val0 |= der[len_len + k] & 0x7F;
+      if (!(der[len_len + k] & 0x80))
+       break;
+    }
+  parsed = ++k;
+
+  /* val0 = (X*40) + Y, X={0,1,2}, Y<=39 when X={0,1} */
+  /* X = val, Y = val1 */
+
+  /* check if X == 0  */
+  val = 0;
+  val1 = val0;
+  if (val1 > 39)
+    {
+      val = 1;
+      val1 = val0 - 40;
+      if (val1 > 39)
+       {
+         val = 2;
+         val1 = val0 - 80;
+       }
+    }
+
+  _asn1_str_cpy (str, str_size, _asn1_ltostr (val, temp));
+  _asn1_str_cat (str, str_size, ".");
+  _asn1_str_cat (str, str_size, _asn1_ltostr (val1, temp));
+
+  val = 0;
+  leading = 1;
+  for (k = parsed; k < len; k++)
+    {
+      /* X.690 mandates that the leading byte must never be 0x80
+       */
+      if (leading != 0 && der[len_len + k] == 0x80)
+       return ASN1_DER_ERROR;
+      leading = 0;
+
+      /* check for wrap around */
+      if (INT_LEFT_SHIFT_OVERFLOW (val, 7))
+       return ASN1_DER_ERROR;
+
+      val = val << 7;
+      val |= der[len_len + k] & 0x7F;
+
+      if (!(der[len_len + k] & 0x80))
+       {
+         _asn1_str_cat (str, str_size, ".");
+         _asn1_str_cat (str, str_size, _asn1_ltostr (val, temp));
+         val = 0;
+         leading = 1;
+       }
+    }
+
+  if (INT_ADD_OVERFLOW (len, len_len))
+    return ASN1_DER_ERROR;
+
+  *ret_len = len + len_len;
+
+  return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_get_bit_der:
+ * @der: DER data to decode containing the BIT SEQUENCE.
+ * @der_len: Length of DER data to decode.
+ * @ret_len: Output variable containing the length of the DER data.
+ * @str: Pre-allocated output buffer to put decoded BIT SEQUENCE in.
+ * @str_size: Length of pre-allocated output buffer.
+ * @bit_len: Output variable containing the size of the BIT SEQUENCE.
+ *
+ * Extract a BIT SEQUENCE from DER data.
+ *
+ * Returns: %ASN1_SUCCESS on success, or an error.
+ **/
+int
+asn1_get_bit_der (const unsigned char *der, int der_len,
+                 int *ret_len, unsigned char *str, int str_size,
+                 int *bit_len)
+{
+  int len_len = 0, len_byte;
+
+  if (der_len <= 0)
+    return ASN1_GENERIC_ERROR;
+
+  len_byte = asn1_get_length_der (der, der_len, &len_len) - 1;
+  if (len_byte < 0)
+    return ASN1_DER_ERROR;
+
+  *ret_len = len_byte + len_len + 1;
+  *bit_len = len_byte * 8 - der[len_len];
+
+  if (*bit_len < 0)
+    return ASN1_DER_ERROR;
+
+  if (str_size >= len_byte)
+    {
+      if (len_byte > 0 && str)
+       memcpy (str, der + len_len + 1, len_byte);
+    }
+  else
+    {
+      return ASN1_MEM_ERROR;
+    }
+
+  return ASN1_SUCCESS;
+}
+
+/* tag_len: the total tag length (explicit+inner)
+ * inner_tag_len: the inner_tag length
+ */
+static int
+_asn1_extract_tag_der (asn1_node node, const unsigned char *der, int der_len,
+                      int *tag_len, int *inner_tag_len, unsigned flags)
+{
+  asn1_node p;
+  int counter, len2, len3, is_tag_implicit;
+  int result;
+  unsigned long tag, tag_implicit = 0;
+  unsigned char class, class2, class_implicit = 0;
+
+  if (der_len <= 0)
+    return ASN1_GENERIC_ERROR;
+
+  counter = is_tag_implicit = 0;
+
+  if (node->type & CONST_TAG)
+    {
+      p = node->down;
+      while (p)
+       {
+         if (type_field (p->type) == ASN1_ETYPE_TAG)
+           {
+             if (p->type & CONST_APPLICATION)
+               class2 = ASN1_CLASS_APPLICATION;
+             else if (p->type & CONST_UNIVERSAL)
+               class2 = ASN1_CLASS_UNIVERSAL;
+             else if (p->type & CONST_PRIVATE)
+               class2 = ASN1_CLASS_PRIVATE;
+             else
+               class2 = ASN1_CLASS_CONTEXT_SPECIFIC;
+
+             if (p->type & CONST_EXPLICIT)
+               {
+                 if (asn1_get_tag_der
+                     (der + counter, der_len, &class, &len2,
+                      &tag) != ASN1_SUCCESS)
+                   return ASN1_DER_ERROR;
+
+                 DECR_LEN (der_len, len2);
+                 counter += len2;
+
+                 if (flags & ASN1_DECODE_FLAG_STRICT_DER)
+                   len3 =
+                     asn1_get_length_der (der + counter, der_len, &len2);
+                 else
+                   len3 =
+                     asn1_get_length_ber (der + counter, der_len, &len2);
+                 if (len3 < 0)
+                   return ASN1_DER_ERROR;
+
+                 DECR_LEN (der_len, len2);
+                 counter += len2;
+
+                 if (!is_tag_implicit)
+                   {
+                     if ((class != (class2 | ASN1_CLASS_STRUCTURED)) ||
+                         (tag != strtoul ((char *) p->value, NULL, 10)))
+                       return ASN1_TAG_ERROR;
+                   }
+                 else
+                   {           /* ASN1_TAG_IMPLICIT */
+                     if ((class != class_implicit) || (tag != tag_implicit))
+                       return ASN1_TAG_ERROR;
+                   }
+                 is_tag_implicit = 0;
+               }
+             else
+               {               /* ASN1_TAG_IMPLICIT */
+                 if (!is_tag_implicit)
+                   {
+                     if ((type_field (node->type) == ASN1_ETYPE_SEQUENCE) ||
+                         (type_field (node->type) == ASN1_ETYPE_SEQUENCE_OF)
+                         || (type_field (node->type) == ASN1_ETYPE_SET)
+                         || (type_field (node->type) == ASN1_ETYPE_SET_OF))
+                       class2 |= ASN1_CLASS_STRUCTURED;
+                     class_implicit = class2;
+                     tag_implicit = strtoul ((char *) p->value, NULL, 10);
+                     is_tag_implicit = 1;
+                   }
+               }
+           }
+         p = p->right;
+       }
+    }
+
+  if (is_tag_implicit)
+    {
+      if (asn1_get_tag_der
+         (der + counter, der_len, &class, &len2, &tag) != ASN1_SUCCESS)
+       return ASN1_DER_ERROR;
+
+      DECR_LEN (der_len, len2);
+
+      if ((class != class_implicit) || (tag != tag_implicit))
+       {
+         if (type_field (node->type) == ASN1_ETYPE_OCTET_STRING)
+           {
+             class_implicit |= ASN1_CLASS_STRUCTURED;
+             if ((class != class_implicit) || (tag != tag_implicit))
+               return ASN1_TAG_ERROR;
+           }
+         else
+           return ASN1_TAG_ERROR;
+       }
+    }
+  else
+    {
+      unsigned type = type_field (node->type);
+      if (type == ASN1_ETYPE_TAG)
+       {
+         *tag_len = 0;
+         if (inner_tag_len)
+           *inner_tag_len = 0;
+         return ASN1_SUCCESS;
+       }
+
+      if (asn1_get_tag_der
+         (der + counter, der_len, &class, &len2, &tag) != ASN1_SUCCESS)
+       return ASN1_DER_ERROR;
+
+      DECR_LEN (der_len, len2);
+
+      switch (type)
+       {
+       case ASN1_ETYPE_NULL:
+       case ASN1_ETYPE_BOOLEAN:
+       case ASN1_ETYPE_INTEGER:
+       case ASN1_ETYPE_ENUMERATED:
+       case ASN1_ETYPE_OBJECT_ID:
+       case ASN1_ETYPE_GENERALSTRING:
+       case ASN1_ETYPE_NUMERIC_STRING:
+       case ASN1_ETYPE_IA5_STRING:
+       case ASN1_ETYPE_TELETEX_STRING:
+       case ASN1_ETYPE_PRINTABLE_STRING:
+       case ASN1_ETYPE_UNIVERSAL_STRING:
+       case ASN1_ETYPE_BMP_STRING:
+       case ASN1_ETYPE_UTF8_STRING:
+       case ASN1_ETYPE_VISIBLE_STRING:
+       case ASN1_ETYPE_BIT_STRING:
+       case ASN1_ETYPE_SEQUENCE:
+       case ASN1_ETYPE_SEQUENCE_OF:
+       case ASN1_ETYPE_SET:
+       case ASN1_ETYPE_SET_OF:
+       case ASN1_ETYPE_GENERALIZED_TIME:
+       case ASN1_ETYPE_UTC_TIME:
+         if ((class != _asn1_tags[type].class)
+             || (tag != _asn1_tags[type].tag))
+           return ASN1_DER_ERROR;
+         break;
+
+       case ASN1_ETYPE_OCTET_STRING:
+         /* OCTET STRING is handled differently to allow
+          * BER encodings (structured class). */
+         if (((class != ASN1_CLASS_UNIVERSAL)
+              && (class != (ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED)))
+             || (tag != ASN1_TAG_OCTET_STRING))
+           return ASN1_DER_ERROR;
+         break;
+       case ASN1_ETYPE_ANY:
+         counter -= len2;
+         break;
+       case ASN1_ETYPE_CHOICE:
+         counter -= len2;
+         break;
+       default:
+         return ASN1_DER_ERROR;
+         break;
+       }
+    }
+
+  counter += len2;
+  *tag_len = counter;
+  if (inner_tag_len)
+    *inner_tag_len = len2;
+  return ASN1_SUCCESS;
+
+cleanup:
+  return result;
+}
+
+static int
+extract_tag_der_recursive (asn1_node node, const unsigned char *der,
+                          int der_len, int *ret_len, int *inner_len,
+                          unsigned flags)
+{
+  asn1_node p;
+  int ris = ASN1_DER_ERROR;
+
+  if (type_field (node->type) == ASN1_ETYPE_CHOICE)
+    {
+      p = node->down;
+      while (p)
+       {
+         ris =
+           _asn1_extract_tag_der (p, der, der_len, ret_len, inner_len,
+                                  flags);
+         if (ris == ASN1_SUCCESS)
+           break;
+         p = p->right;
+       }
+
+      *ret_len = 0;
+      return ris;
+    }
+  else
+    return _asn1_extract_tag_der (node, der, der_len, ret_len, inner_len,
+                                 flags);
+}
+
+static int
+_asn1_delete_not_used (asn1_node node)
+{
+  asn1_node p, p2;
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = node;
+  while (p)
+    {
+      if (p->type & CONST_NOT_USED)
+       {
+         p2 = NULL;
+         if (p != node)
+           {
+             p2 = _asn1_find_left (p);
+             if (!p2)
+               p2 = _asn1_find_up (p);
+           }
+         asn1_delete_structure (&p);
+         p = p2;
+       }
+
+      if (!p)
+       break;                  /* reach node */
+
+      if (p->down)
+       {
+         p = p->down;
+       }
+      else
+       {
+         if (p == node)
+           p = NULL;
+         else if (p->right)
+           p = p->right;
+         else
+           {
+             while (1)
+               {
+                 p = _asn1_find_up (p);
+                 if (p == node)
+                   {
+                     p = NULL;
+                     break;
+                   }
+                 if (p->right)
+                   {
+                     p = p->right;
+                     break;
+                   }
+               }
+           }
+       }
+    }
+  return ASN1_SUCCESS;
+}
+
+static int
+_asn1_get_indefinite_length_string (const unsigned char *der,
+                                   int der_len, int *len)
+{
+  int len2, len3, counter, indefinite;
+  int result;
+  unsigned long tag;
+  unsigned char class;
+
+  counter = indefinite = 0;
+
+  while (1)
+    {
+      if (HAVE_TWO (der_len) && (der[counter] == 0)
+         && (der[counter + 1] == 0))
+       {
+         counter += 2;
+         DECR_LEN (der_len, 2);
+
+         indefinite--;
+         if (indefinite <= 0)
+           break;
+         else
+           continue;
+       }
+
+      if (asn1_get_tag_der
+         (der + counter, der_len, &class, &len2, &tag) != ASN1_SUCCESS)
+       return ASN1_DER_ERROR;
+
+      DECR_LEN (der_len, len2);
+      counter += len2;
+
+      len2 = asn1_get_length_der (der + counter, der_len, &len3);
+      if (len2 < -1)
+       return ASN1_DER_ERROR;
+
+      if (len2 == -1)
+       {
+         indefinite++;
+         counter += 1;
+         DECR_LEN (der_len, 1);
+       }
+      else
+       {
+         counter += len2 + len3;
+         DECR_LEN (der_len, len2 + len3);
+       }
+    }
+
+  *len = counter;
+  return ASN1_SUCCESS;
+
+cleanup:
+  return result;
+}
+
+static void
+delete_unneeded_choice_fields (asn1_node p)
+{
+  asn1_node p2;
+
+  while (p->right)
+    {
+      p2 = p->right;
+      asn1_delete_structure (&p2);
+    }
+}
+
+
+/**
+ * asn1_der_decoding2
+ * @element: pointer to an ASN1 structure.
+ * @ider: vector that contains the DER encoding.
+ * @max_ider_len: pointer to an integer giving the information about the
+ *   maximal number of bytes occupied by *@ider. The real size of the DER
+ *   encoding is returned through this pointer.
+ * @flags: flags controlling the behaviour of the function.
+ * @errorDescription: null-terminated string contains details when an
+ *   error occurred.
+ *
+ * Fill the structure *@element with values of a DER encoding string. The
+ * structure must just be created with function asn1_create_element().
+ *
+ * If %ASN1_DECODE_FLAG_ALLOW_PADDING flag is set then the function will ignore
+ * padding after the decoded DER data. Upon a successful return the value of
+ * *@max_ider_len will be set to the number of bytes decoded.
+ *
+ * If %ASN1_DECODE_FLAG_STRICT_DER flag is set then the function will
+ * not decode any BER-encoded elements.
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ *   if @ELEMENT is %NULL, and %ASN1_TAG_ERROR or
+ *   %ASN1_DER_ERROR if the der encoding doesn't match the structure
+ *   name (*@ELEMENT deleted).
+ **/
+int
+asn1_der_decoding2 (asn1_node * element, const void *ider, int *max_ider_len,
+                   unsigned int flags, char *errorDescription)
+{
+  asn1_node node, p, p2, p3;
+  char temp[128];
+  int counter, len2, len3, len4, move, ris, tlen;
+  struct node_tail_cache_st tcache = { NULL, NULL };
+  unsigned char class;
+  unsigned long tag;
+  int tag_len;
+  int indefinite, result, total_len = *max_ider_len, ider_len = *max_ider_len;
+  int inner_tag_len;
+  unsigned char *ptmp;
+  const unsigned char *ptag;
+  const unsigned char *der = ider;
+
+  node = *element;
+
+  if (errorDescription != NULL)
+    errorDescription[0] = 0;
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  if (node->type & CONST_OPTION)
+    {
+      result = ASN1_GENERIC_ERROR;
+      warn ();
+      goto cleanup;
+    }
+
+  counter = 0;
+  move = DOWN;
+  p = node;
+  while (1)
+    {
+      tag_len = 0;
+      inner_tag_len = 0;
+      ris = ASN1_SUCCESS;
+      if (move != UP)
+       {
+         if (p->type & CONST_SET)
+           {
+             p2 = _asn1_find_up (p);
+             len2 = p2->tmp_ival;
+             if (len2 == -1)
+               {
+                 if (HAVE_TWO (ider_len) && !der[counter]
+                     && !der[counter + 1])
+                   {
+                     p = p2;
+                     move = UP;
+                     counter += 2;
+                     DECR_LEN (ider_len, 2);
+                     continue;
+                   }
+               }
+             else if (counter == len2)
+               {
+                 p = p2;
+                 move = UP;
+                 continue;
+               }
+             else if (counter > len2)
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+             p2 = p2->down;
+             while (p2)
+               {
+                 if ((p2->type & CONST_SET) && (p2->type & CONST_NOT_USED))
+                   {
+                     ris =
+                       extract_tag_der_recursive (p2, der + counter,
+                                                  ider_len, &len2, NULL,
+                                                  flags);
+                     if (ris == ASN1_SUCCESS)
+                       {
+                         p2->type &= ~CONST_NOT_USED;
+                         p = p2;
+                         break;
+                       }
+                   }
+                 p2 = p2->right;
+               }
+             if (p2 == NULL)
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+           }
+
+         /* the position in the DER structure this starts */
+         p->start = counter;
+         p->end = total_len - 1;
+
+         if ((p->type & CONST_OPTION) || (p->type & CONST_DEFAULT))
+           {
+             p2 = _asn1_find_up (p);
+             len2 = p2->tmp_ival;
+             if (counter == len2)
+               {
+                 if (p->right)
+                   {
+                     p2 = p->right;
+                     move = RIGHT;
+                   }
+                 else
+                   move = UP;
+
+                 if (p->type & CONST_OPTION)
+                   asn1_delete_structure (&p);
+
+                 p = p2;
+                 continue;
+               }
+           }
+
+         if (type_field (p->type) == ASN1_ETYPE_CHOICE)
+           {
+             while (p->down)
+               {
+                 ris =
+                   extract_tag_der_recursive (p->down, der + counter,
+                                              ider_len, &len2, NULL, flags);
+
+                 if (ris == ASN1_SUCCESS)
+                   {
+                     delete_unneeded_choice_fields (p->down);
+                     break;
+                   }
+                 else if (ris == ASN1_ERROR_TYPE_ANY)
+                   {
+                     result = ASN1_ERROR_TYPE_ANY;
+                     warn ();
+                     goto cleanup;
+                   }
+                 else
+                   {
+                     p2 = p->down;
+                     asn1_delete_structure (&p2);
+                   }
+               }
+
+             if (p->down == NULL)
+               {
+                 if (!(p->type & CONST_OPTION))
+                   {
+                     result = ASN1_DER_ERROR;
+                     warn ();
+                     goto cleanup;
+                   }
+               }
+             else if (type_field (p->type) != ASN1_ETYPE_CHOICE)
+               p = p->down;
+
+             p->start = counter;
+           }
+
+         if ((p->type & CONST_OPTION) || (p->type & CONST_DEFAULT))
+           {
+             p2 = _asn1_find_up (p);
+             len2 = p2->tmp_ival;
+
+             if ((len2 != -1) && (counter > len2))
+               ris = ASN1_TAG_ERROR;
+           }
+
+         if (ris == ASN1_SUCCESS)
+           ris =
+             extract_tag_der_recursive (p, der + counter, ider_len,
+                                        &tag_len, &inner_tag_len, flags);
+
+         if (ris != ASN1_SUCCESS)
+           {
+             if (p->type & CONST_OPTION)
+               {
+                 p->type |= CONST_NOT_USED;
+                 move = RIGHT;
+               }
+             else if (p->type & CONST_DEFAULT)
+               {
+                 _asn1_set_value (p, NULL, 0);
+                 move = RIGHT;
+               }
+             else
+               {
+                 if (errorDescription != NULL)
+                   _asn1_error_description_tag_error (p, errorDescription);
+
+                 result = ASN1_TAG_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+           }
+         else
+           {
+             DECR_LEN (ider_len, tag_len);
+             counter += tag_len;
+           }
+       }
+
+      if (ris == ASN1_SUCCESS)
+       {
+         switch (type_field (p->type))
+           {
+           case ASN1_ETYPE_NULL:
+             DECR_LEN (ider_len, 1);
+             if (der[counter])
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+             counter++;
+             move = RIGHT;
+             break;
+           case ASN1_ETYPE_BOOLEAN:
+             DECR_LEN (ider_len, 2);
+
+             if (der[counter++] != 1)
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+             if (der[counter++] == 0)
+               _asn1_set_value (p, "F", 1);
+             else
+               _asn1_set_value (p, "T", 1);
+             move = RIGHT;
+             break;
+           case ASN1_ETYPE_INTEGER:
+           case ASN1_ETYPE_ENUMERATED:
+             len2 = asn1_get_length_der (der + counter, ider_len, &len3);
+             if (len2 < 0)
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+
+             DECR_LEN (ider_len, len3 + len2);
+
+             _asn1_set_value (p, der + counter, len3 + len2);
+             counter += len3 + len2;
+             move = RIGHT;
+             break;
+           case ASN1_ETYPE_OBJECT_ID:
+             result =
+               asn1_get_object_id_der (der + counter, ider_len, &len2,
+                                       temp, sizeof (temp));
+             if (result != ASN1_SUCCESS)
+               {
+                 warn ();
+                 goto cleanup;
+               }
+
+             DECR_LEN (ider_len, len2);
+
+             tlen = strlen (temp);
+             if (tlen > 0)
+               _asn1_set_value (p, temp, tlen + 1);
+
+             counter += len2;
+             move = RIGHT;
+             break;
+           case ASN1_ETYPE_GENERALIZED_TIME:
+           case ASN1_ETYPE_UTC_TIME:
+             result =
+               _asn1_get_time_der (type_field (p->type), der + counter,
+                                   ider_len, &len2, temp, sizeof (temp) - 1,
+                                   flags);
+             if (result != ASN1_SUCCESS)
+               {
+                 warn ();
+                 goto cleanup;
+               }
+
+             DECR_LEN (ider_len, len2);
+
+             tlen = strlen (temp);
+             if (tlen > 0)
+               _asn1_set_value (p, temp, tlen);
+
+             counter += len2;
+             move = RIGHT;
+             break;
+           case ASN1_ETYPE_OCTET_STRING:
+             if (counter < inner_tag_len)
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+
+             ptag = der + counter - inner_tag_len;
+             if ((flags & ASN1_DECODE_FLAG_STRICT_DER)
+                 || !(ptag[0] & ASN1_CLASS_STRUCTURED))
+               {
+                 if (ptag[0] & ASN1_CLASS_STRUCTURED)
+                   {
+                     result = ASN1_DER_ERROR;
+                     warn ();
+                     goto cleanup;
+                   }
+
+                 len2 = asn1_get_length_der (der + counter, ider_len, &len3);
+                 if (len2 < 0)
+                   {
+                     result = ASN1_DER_ERROR;
+                     warn ();
+                     goto cleanup;
+                   }
+
+                 DECR_LEN (ider_len, len3 + len2);
+
+                 _asn1_set_value (p, der + counter, len3 + len2);
+                 counter += len3 + len2;
+               }
+             else
+               {
+                 unsigned dflags = 0, vlen, ber_len;
+
+                 if (ptag[0] & ASN1_CLASS_STRUCTURED)
+                   dflags |= DECODE_FLAG_CONSTRUCTED;
+
+                 result =
+                   _asn1_decode_simple_ber (type_field (p->type),
+                                            der + counter, ider_len, &ptmp,
+                                            &vlen, &ber_len, dflags);
+                 if (result != ASN1_SUCCESS)
+                   {
+                     warn ();
+                     goto cleanup;
+                   }
+
+                 DECR_LEN (ider_len, ber_len);
+
+                 _asn1_set_value_lv (p, ptmp, vlen);
+
+                 counter += ber_len;
+                 free (ptmp);
+               }
+             move = RIGHT;
+             break;
+           case ASN1_ETYPE_GENERALSTRING:
+           case ASN1_ETYPE_NUMERIC_STRING:
+           case ASN1_ETYPE_IA5_STRING:
+           case ASN1_ETYPE_TELETEX_STRING:
+           case ASN1_ETYPE_PRINTABLE_STRING:
+           case ASN1_ETYPE_UNIVERSAL_STRING:
+           case ASN1_ETYPE_BMP_STRING:
+           case ASN1_ETYPE_UTF8_STRING:
+           case ASN1_ETYPE_VISIBLE_STRING:
+           case ASN1_ETYPE_BIT_STRING:
+             len2 = asn1_get_length_der (der + counter, ider_len, &len3);
+             if (len2 < 0)
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+
+             DECR_LEN (ider_len, len3 + len2);
+
+             _asn1_set_value (p, der + counter, len3 + len2);
+             counter += len3 + len2;
+             move = RIGHT;
+             break;
+           case ASN1_ETYPE_SEQUENCE:
+           case ASN1_ETYPE_SET:
+             if (move == UP)
+               {
+                 len2 = p->tmp_ival;
+                 p->tmp_ival = 0;
+                 if (len2 == -1)
+                   {           /* indefinite length method */
+                     DECR_LEN (ider_len, 2);
+                     if ((der[counter]) || der[counter + 1])
+                       {
+                         result = ASN1_DER_ERROR;
+                         warn ();
+                         goto cleanup;
+                       }
+                     counter += 2;
+                   }
+                 else
+                   {           /* definite length method */
+                     if (len2 != counter)
+                       {
+                         result = ASN1_DER_ERROR;
+                         warn ();
+                         goto cleanup;
+                       }
+                   }
+                 move = RIGHT;
+               }
+             else
+               {               /* move==DOWN || move==RIGHT */
+                 len3 = asn1_get_length_der (der + counter, ider_len, &len2);
+                 if (IS_ERR (len3, flags))
+                   {
+                     result = ASN1_DER_ERROR;
+                     warn ();
+                     goto cleanup;
+                   }
+
+                 DECR_LEN (ider_len, len2);
+                 counter += len2;
+
+                 if (len3 > 0)
+                   {
+                     p->tmp_ival = counter + len3;
+                     move = DOWN;
+                   }
+                 else if (len3 == 0)
+                   {
+                     p2 = p->down;
+                     while (p2)
+                       {
+                         if (type_field (p2->type) != ASN1_ETYPE_TAG)
+                           {
+                             p3 = p2->right;
+                             asn1_delete_structure (&p2);
+                             p2 = p3;
+                           }
+                         else
+                           p2 = p2->right;
+                       }
+                     move = RIGHT;
+                   }
+                 else
+                   {           /* indefinite length method */
+                     p->tmp_ival = -1;
+                     move = DOWN;
+                   }
+               }
+             break;
+           case ASN1_ETYPE_SEQUENCE_OF:
+           case ASN1_ETYPE_SET_OF:
+             if (move == UP)
+               {
+                 len2 = p->tmp_ival;
+                 if (len2 == -1)
+                   {           /* indefinite length method */
+                     if (!HAVE_TWO (ider_len)
+                         || ((der[counter]) || der[counter + 1]))
+                       {
+                         result = _asn1_append_sequence_set (p, &tcache);
+                         if (result != 0)
+                           {
+                             warn ();
+                             goto cleanup;
+                           }
+                         p = tcache.tail;
+                         move = RIGHT;
+                         continue;
+                       }
+
+                     p->tmp_ival = 0;
+                     tcache.tail = NULL;       /* finished decoding this 
structure */
+                     tcache.head = NULL;
+                     DECR_LEN (ider_len, 2);
+                     counter += 2;
+                   }
+                 else
+                   {           /* definite length method */
+                     if (len2 > counter)
+                       {
+                         result = _asn1_append_sequence_set (p, &tcache);
+                         if (result != 0)
+                           {
+                             warn ();
+                             goto cleanup;
+                           }
+                         p = tcache.tail;
+                         move = RIGHT;
+                         continue;
+                       }
+
+                     p->tmp_ival = 0;
+                     tcache.tail = NULL;       /* finished decoding this 
structure */
+                     tcache.head = NULL;
+
+                     if (len2 != counter)
+                       {
+                         result = ASN1_DER_ERROR;
+                         warn ();
+                         goto cleanup;
+                       }
+                   }
+               }
+             else
+               {               /* move==DOWN || move==RIGHT */
+                 len3 = asn1_get_length_der (der + counter, ider_len, &len2);
+                 if (IS_ERR (len3, flags))
+                   {
+                     result = ASN1_DER_ERROR;
+                     warn ();
+                     goto cleanup;
+                   }
+
+                 DECR_LEN (ider_len, len2);
+                 counter += len2;
+                 if (len3)
+                   {
+                     if (len3 > 0)
+                       {       /* definite length method */
+                         p->tmp_ival = counter + len3;
+                       }
+                     else
+                       {       /* indefinite length method */
+                         p->tmp_ival = -1;
+                       }
+
+                     p2 = p->down;
+                     if (p2 == NULL)
+                       {
+                         result = ASN1_DER_ERROR;
+                         warn ();
+                         goto cleanup;
+                       }
+
+                     while ((type_field (p2->type) == ASN1_ETYPE_TAG)
+                            || (type_field (p2->type) == ASN1_ETYPE_SIZE))
+                       p2 = p2->right;
+                     if (p2->right == NULL)
+                       {
+                         result = _asn1_append_sequence_set (p, &tcache);
+                         if (result != 0)
+                           {
+                             warn ();
+                             goto cleanup;
+                           }
+                       }
+                     p = p2;
+                   }
+               }
+             move = RIGHT;
+             break;
+           case ASN1_ETYPE_ANY:
+             /* Check indefinite lenth method in an EXPLICIT TAG */
+
+             if (!(flags & ASN1_DECODE_FLAG_STRICT_DER)
+                 && (p->type & CONST_TAG) && tag_len == 2
+                 && (der[counter - 1] == 0x80))
+               indefinite = 1;
+             else
+               indefinite = 0;
+
+             if (asn1_get_tag_der
+                 (der + counter, ider_len, &class, &len2,
+                  &tag) != ASN1_SUCCESS)
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+
+             DECR_LEN (ider_len, len2);
+
+             len4 =
+               asn1_get_length_der (der + counter + len2, ider_len, &len3);
+             if (IS_ERR (len4, flags))
+               {
+                 result = ASN1_DER_ERROR;
+                 warn ();
+                 goto cleanup;
+               }
+             if (len4 != -1)   /* definite */
+               {
+                 len2 += len4;
+
+                 DECR_LEN (ider_len, len4 + len3);
+                 _asn1_set_value_lv (p, der + counter, len2 + len3);
+                 counter += len2 + len3;
+               }
+             else              /* == -1 */
+               {               /* indefinite length */
+                 ider_len += len2;     /* undo DECR_LEN */
+
+                 if (counter == 0)
+                   {
+                     result = ASN1_DER_ERROR;
+                     warn ();
+                     goto cleanup;
+                   }
+
+                 result =
+                   _asn1_get_indefinite_length_string (der + counter,
+                                                       ider_len, &len2);
+                 if (result != ASN1_SUCCESS)
+                   {
+                     warn ();
+                     goto cleanup;
+                   }
+
+                 DECR_LEN (ider_len, len2);
+                 _asn1_set_value_lv (p, der + counter, len2);
+                 counter += len2;
+
+               }
+
+             /* Check if a couple of 0x00 are present due to an EXPLICIT TAG 
with
+                an indefinite length method. */
+             if (indefinite)
+               {
+                 DECR_LEN (ider_len, 2);
+                 if (!der[counter] && !der[counter + 1])
+                   {
+                     counter += 2;
+                   }
+                 else
+                   {
+                     result = ASN1_DER_ERROR;
+                     warn ();
+                     goto cleanup;
+                   }
+               }
+
+             move = RIGHT;
+             break;
+           default:
+             move = (move == UP) ? RIGHT : DOWN;
+             break;
+           }
+       }
+
+      if (p)
+       {
+         p->end = counter - 1;
+       }
+
+      if (p == node && move != DOWN)
+       break;
+
+      if (move == DOWN)
+       {
+         if (p->down)
+           p = p->down;
+         else
+           move = RIGHT;
+       }
+      if ((move == RIGHT) && !(p->type & CONST_SET))
+       {
+         if (p->right)
+           p = p->right;
+         else
+           move = UP;
+       }
+      if (move == UP)
+       p = _asn1_find_up (p);
+    }
+
+  _asn1_delete_not_used (*element);
+
+  if ((ider_len < 0) ||
+      (!(flags & ASN1_DECODE_FLAG_ALLOW_PADDING) && (ider_len != 0)))
+    {
+      warn ();
+      result = ASN1_DER_ERROR;
+      goto cleanup;
+    }
+
+  *max_ider_len = total_len - ider_len;
+
+  return ASN1_SUCCESS;
+
+cleanup:
+  asn1_delete_structure (element);
+  return result;
+}
+
+
+/**
+ * asn1_der_decoding:
+ * @element: pointer to an ASN1 structure.
+ * @ider: vector that contains the DER encoding.
+ * @ider_len: number of bytes of *@ider: @ider[0]..@ider[len-1].
+ * @errorDescription: null-terminated string contains details when an
+ *   error occurred.
+ *
+ * Fill the structure *@element with values of a DER encoding
+ * string. The structure must just be created with function
+ * asn1_create_element().
+ *
+ * Note that the *@element variable is provided as a pointer for
+ * historical reasons.
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ *   if @ELEMENT is %NULL, and %ASN1_TAG_ERROR or
+ *   %ASN1_DER_ERROR if the der encoding doesn't match the structure
+ *   name (*@ELEMENT deleted).
+ **/
+int
+asn1_der_decoding (asn1_node * element, const void *ider, int ider_len,
+                  char *errorDescription)
+{
+  return asn1_der_decoding2 (element, ider, &ider_len, 0, errorDescription);
+}
+
+/**
+ * asn1_der_decoding_element:
+ * @structure: pointer to an ASN1 structure
+ * @elementName: name of the element to fill
+ * @ider: vector that contains the DER encoding of the whole structure.
+ * @len: number of bytes of *der: der[0]..der[len-1]
+ * @errorDescription: null-terminated string contains details when an
+ *   error occurred.
+ *
+ * Fill the element named @ELEMENTNAME with values of a DER encoding
+ * string.  The structure must just be created with function
+ * asn1_create_element().  The DER vector must contain the encoding
+ * string of the whole @STRUCTURE.  If an error occurs during the
+ * decoding procedure, the *@STRUCTURE is deleted and set equal to
+ * %NULL.
+ *
+ * This function is deprecated and may just be an alias to asn1_der_decoding
+ * in future versions. Use asn1_der_decoding() instead.
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ *   if ELEMENT is %NULL or @elementName == NULL, and
+ *   %ASN1_TAG_ERROR or %ASN1_DER_ERROR if the der encoding doesn't
+ *   match the structure @structure (*ELEMENT deleted).
+ **/
+int
+asn1_der_decoding_element (asn1_node * structure, const char *elementName,
+                          const void *ider, int len, char *errorDescription)
+{
+  return asn1_der_decoding (structure, ider, len, errorDescription);
+}
+
+/**
+ * asn1_der_decoding_startEnd:
+ * @element: pointer to an ASN1 element
+ * @ider: vector that contains the DER encoding.
+ * @ider_len: number of bytes of *@ider: @ider[0]..@ider[len-1]
+ * @name_element: an element of NAME structure.
+ * @start: the position of the first byte of NAME_ELEMENT decoding
+ *   (@ider[*start])
+ * @end: the position of the last byte of NAME_ELEMENT decoding
+ *  (@ider[*end])
+ *
+ * Find the start and end point of an element in a DER encoding
+ * string. I mean that if you have a der encoding and you have already
+ * used the function asn1_der_decoding() to fill a structure, it may
+ * happen that you want to find the piece of string concerning an
+ * element of the structure.
+ *
+ * One example is the sequence "tbsCertificate" inside an X509
+ * certificate.
+ *
+ * Note that since libtasn1 3.7 the @ider and @ider_len parameters
+ * can be omitted, if the element is already decoded using asn1_der_decoding().
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ *   if ELEMENT is %asn1_node EMPTY or @name_element is not a valid
+ *   element, %ASN1_TAG_ERROR or %ASN1_DER_ERROR if the der encoding
+ *   doesn't match the structure ELEMENT.
+ **/
+int
+asn1_der_decoding_startEnd (asn1_node element, const void *ider, int ider_len,
+                           const char *name_element, int *start, int *end)
+{
+  asn1_node node, node_to_find;
+  int result = ASN1_DER_ERROR;
+
+  node = element;
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  node_to_find = asn1_find_node (node, name_element);
+
+  if (node_to_find == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  *start = node_to_find->start;
+  *end = node_to_find->end;
+
+  if (*start == 0 && *end == 0)
+    {
+      if (ider == NULL || ider_len == 0)
+       return ASN1_GENERIC_ERROR;
+
+      /* it seems asn1_der_decoding() wasn't called before. Do it now */
+      result = asn1_der_decoding (&node, ider, ider_len, NULL);
+      if (result != ASN1_SUCCESS)
+       {
+         warn ();
+         return result;
+       }
+
+      node_to_find = asn1_find_node (node, name_element);
+      if (node_to_find == NULL)
+       return ASN1_ELEMENT_NOT_FOUND;
+
+      *start = node_to_find->start;
+      *end = node_to_find->end;
+    }
+
+  if (*end < *start)
+    return ASN1_GENERIC_ERROR;
+
+  return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_expand_any_defined_by:
+ * @definitions: ASN1 definitions
+ * @element: pointer to an ASN1 structure
+ *
+ * Expands every "ANY DEFINED BY" element of a structure created from
+ * a DER decoding process (asn1_der_decoding function). The element
+ * ANY must be defined by an OBJECT IDENTIFIER. The type used to
+ * expand the element ANY is the first one following the definition of
+ * the actual value of the OBJECT IDENTIFIER.
+ *
+ * Returns: %ASN1_SUCCESS if Substitution OK, %ASN1_ERROR_TYPE_ANY if
+ *   some "ANY DEFINED BY" element couldn't be expanded due to a
+ *   problem in OBJECT_ID -> TYPE association, or other error codes
+ *   depending on DER decoding.
+ **/
+int
+asn1_expand_any_defined_by (asn1_node_const definitions, asn1_node * element)
+{
+  char name[2 * ASN1_MAX_NAME_SIZE + 2], value[ASN1_MAX_NAME_SIZE];
+  int retCode = ASN1_SUCCESS, result;
+  int len, len2, len3;
+  asn1_node_const p2;
+  asn1_node p, p3, aux = NULL;
+  char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
+  const char *definitionsName;
+
+  if ((definitions == NULL) || (*element == NULL))
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  definitionsName = definitions->name;
+
+  p = *element;
+  while (p)
+    {
+
+      switch (type_field (p->type))
+       {
+       case ASN1_ETYPE_ANY:
+         if ((p->type & CONST_DEFINED_BY) && (p->value))
+           {
+             /* search the "DEF_BY" element */
+             p2 = p->down;
+             while ((p2) && (type_field (p2->type) != ASN1_ETYPE_CONSTANT))
+               p2 = p2->right;
+
+             if (!p2)
+               {
+                 retCode = ASN1_ERROR_TYPE_ANY;
+                 break;
+               }
+
+             p3 = _asn1_find_up (p);
+
+             if (!p3)
+               {
+                 retCode = ASN1_ERROR_TYPE_ANY;
+                 break;
+               }
+
+             p3 = p3->down;
+             while (p3)
+               {
+                 if (!(strcmp (p3->name, p2->name)))
+                   break;
+                 p3 = p3->right;
+               }
+
+             if ((!p3) || (type_field (p3->type) != ASN1_ETYPE_OBJECT_ID) ||
+                 (p3->value == NULL))
+               {
+
+                 p3 = _asn1_find_up (p);
+                 p3 = _asn1_find_up (p3);
+
+                 if (!p3)
+                   {
+                     retCode = ASN1_ERROR_TYPE_ANY;
+                     break;
+                   }
+
+                 p3 = p3->down;
+
+                 while (p3)
+                   {
+                     if (!(strcmp (p3->name, p2->name)))
+                       break;
+                     p3 = p3->right;
+                   }
+
+                 if ((!p3) || (type_field (p3->type) != ASN1_ETYPE_OBJECT_ID)
+                     || (p3->value == NULL))
+                   {
+                     retCode = ASN1_ERROR_TYPE_ANY;
+                     break;
+                   }
+               }
+
+             /* search the OBJECT_ID into definitions */
+             p2 = definitions->down;
+             while (p2)
+               {
+                 if ((type_field (p2->type) == ASN1_ETYPE_OBJECT_ID) &&
+                     (p2->type & CONST_ASSIGN))
+                   {
+                     snprintf (name, sizeof (name), "%s.%s", definitionsName,
+                               p2->name);
+
+                     len = ASN1_MAX_NAME_SIZE;
+                     result =
+                       asn1_read_value (definitions, name, value, &len);
+
+                     if ((result == ASN1_SUCCESS)
+                         && (!_asn1_strcmp (p3->value, value)))
+                       {
+                         p2 = p2->right;       /* pointer to the structure to
+                                                  use for expansion */
+                         while ((p2) && (p2->type & CONST_ASSIGN))
+                           p2 = p2->right;
+
+                         if (p2)
+                           {
+                             snprintf (name, sizeof (name), "%s.%s",
+                                       definitionsName, p2->name);
+
+                             result =
+                               asn1_create_element (definitions, name, &aux);
+                             if (result == ASN1_SUCCESS)
+                               {
+                                 _asn1_cpy_name (aux, p);
+                                 len2 =
+                                   asn1_get_length_der (p->value,
+                                                        p->value_len, &len3);
+                                 if (len2 < 0)
+                                   return ASN1_DER_ERROR;
+
+                                 result =
+                                   asn1_der_decoding (&aux, p->value + len3,
+                                                      len2,
+                                                      errorDescription);
+                                 if (result == ASN1_SUCCESS)
+                                   {
+
+                                     _asn1_set_right (aux, p->right);
+                                     _asn1_set_right (p, aux);
+
+                                     result = asn1_delete_structure (&p);
+                                     if (result == ASN1_SUCCESS)
+                                       {
+                                         p = aux;
+                                         aux = NULL;
+                                         break;
+                                       }
+                                     else
+                                       {       /* error with 
asn1_delete_structure */
+                                         asn1_delete_structure (&aux);
+                                         retCode = result;
+                                         break;
+                                       }
+                                   }
+                                 else
+                                   {   /* error with asn1_der_decoding */
+                                     retCode = result;
+                                     break;
+                                   }
+                               }
+                             else
+                               {       /* error with asn1_create_element */
+                                 retCode = result;
+                                 break;
+                               }
+                           }
+                         else
+                           {   /* error with the pointer to the structure to 
exapand */
+                             retCode = ASN1_ERROR_TYPE_ANY;
+                             break;
+                           }
+                       }
+                   }
+                 p2 = p2->right;
+               }               /* end while */
+
+             if (!p2)
+               {
+                 retCode = ASN1_ERROR_TYPE_ANY;
+                 break;
+               }
+
+           }
+         break;
+       default:
+         break;
+       }
+
+
+      if (p->down)
+       {
+         p = p->down;
+       }
+      else if (p == *element)
+       {
+         p = NULL;
+         break;
+       }
+      else if (p->right)
+       p = p->right;
+      else
+       {
+         while (1)
+           {
+             p = _asn1_find_up (p);
+             if (p == *element)
+               {
+                 p = NULL;
+                 break;
+               }
+             if (p->right)
+               {
+                 p = p->right;
+                 break;
+               }
+           }
+       }
+    }
+
+  return retCode;
+}
+
+/**
+ * asn1_expand_octet_string:
+ * @definitions: ASN1 definitions
+ * @element: pointer to an ASN1 structure
+ * @octetName: name of the OCTECT STRING field to expand.
+ * @objectName: name of the OBJECT IDENTIFIER field to use to define
+ *    the type for expansion.
+ *
+ * Expands an "OCTET STRING" element of a structure created from a DER
+ * decoding process (the asn1_der_decoding() function).  The type used
+ * for expansion is the first one following the definition of the
+ * actual value of the OBJECT IDENTIFIER indicated by OBJECTNAME.
+ *
+ * Returns: %ASN1_SUCCESS if substitution OK, %ASN1_ELEMENT_NOT_FOUND
+ *   if @objectName or @octetName are not correct,
+ *   %ASN1_VALUE_NOT_VALID if it wasn't possible to find the type to
+ *   use for expansion, or other errors depending on DER decoding.
+ **/
+int
+asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
+                         const char *octetName, const char *objectName)
+{
+  char name[2 * ASN1_MAX_NAME_SIZE + 1], value[ASN1_MAX_NAME_SIZE];
+  int retCode = ASN1_SUCCESS, result;
+  int len, len2, len3;
+  asn1_node_const p2;
+  asn1_node aux = NULL;
+  asn1_node octetNode = NULL, objectNode = NULL;
+  char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
+
+  if ((definitions == NULL) || (*element == NULL))
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  octetNode = asn1_find_node (*element, octetName);
+  if (octetNode == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+  if (type_field (octetNode->type) != ASN1_ETYPE_OCTET_STRING)
+    return ASN1_ELEMENT_NOT_FOUND;
+  if (octetNode->value == NULL)
+    return ASN1_VALUE_NOT_FOUND;
+
+  objectNode = asn1_find_node (*element, objectName);
+  if (objectNode == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  if (type_field (objectNode->type) != ASN1_ETYPE_OBJECT_ID)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  if (objectNode->value == NULL)
+    return ASN1_VALUE_NOT_FOUND;
+
+
+  /* search the OBJECT_ID into definitions */
+  p2 = definitions->down;
+  while (p2)
+    {
+      if ((type_field (p2->type) == ASN1_ETYPE_OBJECT_ID) &&
+         (p2->type & CONST_ASSIGN))
+       {
+         strcpy (name, definitions->name);
+         strcat (name, ".");
+         strcat (name, p2->name);
+
+         len = sizeof (value);
+         result = asn1_read_value (definitions, name, value, &len);
+
+         if ((result == ASN1_SUCCESS)
+             && (!_asn1_strcmp (objectNode->value, value)))
+           {
+
+             p2 = p2->right;   /* pointer to the structure to
+                                  use for expansion */
+             while ((p2) && (p2->type & CONST_ASSIGN))
+               p2 = p2->right;
+
+             if (p2)
+               {
+                 strcpy (name, definitions->name);
+                 strcat (name, ".");
+                 strcat (name, p2->name);
+
+                 result = asn1_create_element (definitions, name, &aux);
+                 if (result == ASN1_SUCCESS)
+                   {
+                     _asn1_cpy_name (aux, octetNode);
+                     len2 =
+                       asn1_get_length_der (octetNode->value,
+                                            octetNode->value_len, &len3);
+                     if (len2 < 0)
+                       return ASN1_DER_ERROR;
+
+                     result =
+                       asn1_der_decoding (&aux, octetNode->value + len3,
+                                          len2, errorDescription);
+                     if (result == ASN1_SUCCESS)
+                       {
+
+                         _asn1_set_right (aux, octetNode->right);
+                         _asn1_set_right (octetNode, aux);
+
+                         result = asn1_delete_structure (&octetNode);
+                         if (result == ASN1_SUCCESS)
+                           {
+                             aux = NULL;
+                             break;
+                           }
+                         else
+                           {   /* error with asn1_delete_structure */
+                             asn1_delete_structure (&aux);
+                             retCode = result;
+                             break;
+                           }
+                       }
+                     else
+                       {       /* error with asn1_der_decoding */
+                         retCode = result;
+                         break;
+                       }
+                   }
+                 else
+                   {           /* error with asn1_create_element */
+                     retCode = result;
+                     break;
+                   }
+               }
+             else
+               {               /* error with the pointer to the structure to 
exapand */
+                 retCode = ASN1_VALUE_NOT_VALID;
+                 break;
+               }
+           }
+       }
+
+      p2 = p2->right;
+
+    }
+
+  if (!p2)
+    retCode = ASN1_VALUE_NOT_VALID;
+
+  return retCode;
+}
+
+/*-
+ * _asn1_decode_simple_der:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @der: the encoded string
+ * @_der_len: the bytes of the encoded string
+ * @str: a pointer to the data
+ * @str_len: the length of the data
+ * @dflags: DECODE_FLAG_*
+ *
+ * Decodes a simple DER encoded type (e.g. a string, which is not constructed).
+ * The output is a pointer inside the @der.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ -*/
+static int
+_asn1_decode_simple_der (unsigned int etype, const unsigned char *der,
+                        unsigned int _der_len, const unsigned char **str,
+                        unsigned int *str_len, unsigned dflags)
+{
+  int tag_len, len_len;
+  const unsigned char *p;
+  int der_len = _der_len;
+  unsigned char class;
+  unsigned long tag;
+  long ret;
+
+  if (der == NULL || der_len == 0)
+    return ASN1_VALUE_NOT_VALID;
+
+  if (ETYPE_OK (etype) == 0 || ETYPE_IS_STRING (etype) == 0)
+    return ASN1_VALUE_NOT_VALID;
+
+  /* doesn't handle constructed classes */
+  class = ETYPE_CLASS (etype);
+  if (class != ASN1_CLASS_UNIVERSAL)
+    return ASN1_VALUE_NOT_VALID;
+
+  p = der;
+
+  if (dflags & DECODE_FLAG_HAVE_TAG)
+    {
+      ret = asn1_get_tag_der (p, der_len, &class, &tag_len, &tag);
+      if (ret != ASN1_SUCCESS)
+       return ret;
+
+      if (class != ETYPE_CLASS (etype) || tag != ETYPE_TAG (etype))
+       {
+         warn ();
+         return ASN1_DER_ERROR;
+       }
+
+      p += tag_len;
+      der_len -= tag_len;
+      if (der_len <= 0)
+       return ASN1_DER_ERROR;
+    }
+
+  ret = asn1_get_length_der (p, der_len, &len_len);
+  if (ret < 0)
+    return ASN1_DER_ERROR;
+
+  p += len_len;
+  der_len -= len_len;
+  if (der_len <= 0)
+    return ASN1_DER_ERROR;
+
+  *str_len = ret;
+  *str = p;
+
+  return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_decode_simple_der:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @der: the encoded string
+ * @_der_len: the bytes of the encoded string
+ * @str: a pointer to the data
+ * @str_len: the length of the data
+ *
+ * Decodes a simple DER encoded type (e.g. a string, which is not constructed).
+ * The output is a pointer inside the @der.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ **/
+int
+asn1_decode_simple_der (unsigned int etype, const unsigned char *der,
+                       unsigned int _der_len, const unsigned char **str,
+                       unsigned int *str_len)
+{
+  return _asn1_decode_simple_der (etype, der, _der_len, str, str_len,
+                                 DECODE_FLAG_HAVE_TAG);
+}
+
+static int
+append (uint8_t ** dst, unsigned *dst_size, const unsigned char *src,
+       unsigned src_size)
+{
+  if (src_size == 0)
+    return ASN1_SUCCESS;
+
+  *dst = _asn1_realloc (*dst, *dst_size + src_size);
+  if (*dst == NULL)
+    return ASN1_MEM_ALLOC_ERROR;
+  memcpy (*dst + *dst_size, src, src_size);
+  *dst_size += src_size;
+  return ASN1_SUCCESS;
+}
+
+/*-
+ * _asn1_decode_simple_ber:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @der: the encoded string
+ * @_der_len: the bytes of the encoded string
+ * @str: a pointer to the data
+ * @str_len: the length of the data
+ * @ber_len: the total length occupied by BER (may be %NULL)
+ * @have_tag: whether a DER tag is included
+ *
+ * Decodes a BER encoded type. The output is an allocated value
+ * of the data. This decodes BER STRINGS only. Other types are
+ * decoded as DER.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ -*/
+static int
+_asn1_decode_simple_ber (unsigned int etype, const unsigned char *der,
+                        unsigned int _der_len, unsigned char **str,
+                        unsigned int *str_len, unsigned int *ber_len,
+                        unsigned dflags)
+{
+  int tag_len, len_len;
+  const unsigned char *p;
+  int der_len = _der_len;
+  uint8_t *total = NULL;
+  unsigned total_size = 0;
+  unsigned char class;
+  unsigned long tag;
+  unsigned char *out = NULL;
+  const unsigned char *cout = NULL;
+  unsigned out_len;
+  long result;
+
+  if (ber_len)
+    *ber_len = 0;
+
+  if (der == NULL || der_len == 0)
+    {
+      warn ();
+      return ASN1_VALUE_NOT_VALID;
+    }
+
+  if (ETYPE_OK (etype) == 0)
+    {
+      warn ();
+      return ASN1_VALUE_NOT_VALID;
+    }
+
+  /* doesn't handle constructed + definite classes */
+  class = ETYPE_CLASS (etype);
+  if (class != ASN1_CLASS_UNIVERSAL)
+    {
+      warn ();
+      return ASN1_VALUE_NOT_VALID;
+    }
+
+  p = der;
+
+  if (dflags & DECODE_FLAG_HAVE_TAG)
+    {
+      result = asn1_get_tag_der (p, der_len, &class, &tag_len, &tag);
+      if (result != ASN1_SUCCESS)
+       {
+         warn ();
+         return result;
+       }
+
+      if (tag != ETYPE_TAG (etype))
+       {
+         warn ();
+         return ASN1_DER_ERROR;
+       }
+
+      p += tag_len;
+
+      DECR_LEN (der_len, tag_len);
+
+      if (ber_len)
+       *ber_len += tag_len;
+    }
+
+  /* indefinite constructed */
+  if ((((dflags & DECODE_FLAG_CONSTRUCTED) || class == ASN1_CLASS_STRUCTURED)
+       && ETYPE_IS_STRING (etype)) && !(dflags & DECODE_FLAG_LEVEL3))
+    {
+      if (der_len == 0)
+       {
+         warn ();
+         result = ASN1_DER_ERROR;
+         goto cleanup;
+       }
+
+      if (der_len > 0 && p[0] == 0x80) /* indefinite */
+       {
+         len_len = 1;
+         DECR_LEN (der_len, len_len);
+         p += len_len;
+
+         if (ber_len)
+           *ber_len += len_len;
+
+         /* decode the available octet strings */
+         do
+           {
+             unsigned tmp_len;
+             unsigned flags = DECODE_FLAG_HAVE_TAG;
+
+             if (dflags & DECODE_FLAG_LEVEL1)
+               flags |= DECODE_FLAG_LEVEL2;
+             else if (dflags & DECODE_FLAG_LEVEL2)
+               flags |= DECODE_FLAG_LEVEL3;
+             else
+               flags |= DECODE_FLAG_LEVEL1;
+
+             result =
+               _asn1_decode_simple_ber (etype, p, der_len, &out, &out_len,
+                                        &tmp_len, flags);
+             if (result != ASN1_SUCCESS)
+               {
+                 warn ();
+                 goto cleanup;
+               }
+
+             p += tmp_len;
+             DECR_LEN (der_len, tmp_len);
+
+             if (ber_len)
+               *ber_len += tmp_len;
+
+             DECR_LEN (der_len, 2);    /* we need the EOC */
+
+             result = append (&total, &total_size, out, out_len);
+             if (result != ASN1_SUCCESS)
+               {
+                 warn ();
+                 goto cleanup;
+               }
+
+             free (out);
+             out = NULL;
+
+             if (p[0] == 0 && p[1] == 0)       /* EOC */
+               {
+                 if (ber_len)
+                   *ber_len += 2;
+                 break;
+               }
+
+             /* no EOC */
+             der_len += 2;
+
+             if (der_len == 2)
+               {
+                 warn ();
+                 result = ASN1_DER_ERROR;
+                 goto cleanup;
+               }
+           }
+         while (1);
+       }
+      else                     /* constructed */
+       {
+         long const_len;
+
+         result = asn1_get_length_ber (p, der_len, &len_len);
+         if (result < 0)
+           {
+             warn ();
+             result = ASN1_DER_ERROR;
+             goto cleanup;
+           }
+
+         DECR_LEN (der_len, len_len);
+         p += len_len;
+
+         const_len = result;
+
+         if (ber_len)
+           *ber_len += len_len;
+
+         /* decode the available octet strings */
+         while (const_len > 0)
+           {
+             unsigned tmp_len;
+             unsigned flags = DECODE_FLAG_HAVE_TAG;
+
+             if (dflags & DECODE_FLAG_LEVEL1)
+               flags |= DECODE_FLAG_LEVEL2;
+             else if (dflags & DECODE_FLAG_LEVEL2)
+               flags |= DECODE_FLAG_LEVEL3;
+             else
+               flags |= DECODE_FLAG_LEVEL1;
+
+             result =
+               _asn1_decode_simple_ber (etype, p, der_len, &out, &out_len,
+                                        &tmp_len, flags);
+             if (result != ASN1_SUCCESS)
+               {
+                 warn ();
+                 goto cleanup;
+               }
+
+             p += tmp_len;
+             DECR_LEN (der_len, tmp_len);
+             DECR_LEN (const_len, tmp_len);
+
+             if (ber_len)
+               *ber_len += tmp_len;
+
+             result = append (&total, &total_size, out, out_len);
+             if (result != ASN1_SUCCESS)
+               {
+                 warn ();
+                 goto cleanup;
+               }
+
+             free (out);
+             out = NULL;
+           }
+       }
+    }
+  else if (class == ETYPE_CLASS (etype))
+    {
+      if (ber_len)
+       {
+         result = asn1_get_length_der (p, der_len, &len_len);
+         if (result < 0)
+           {
+             warn ();
+             result = ASN1_DER_ERROR;
+             goto cleanup;
+           }
+         *ber_len += result + len_len;
+       }
+
+      /* non-string values are decoded as DER */
+      result =
+       _asn1_decode_simple_der (etype, der, _der_len, &cout, &out_len,
+                                dflags);
+      if (result != ASN1_SUCCESS)
+       {
+         warn ();
+         goto cleanup;
+       }
+
+      result = append (&total, &total_size, cout, out_len);
+      if (result != ASN1_SUCCESS)
+       {
+         warn ();
+         goto cleanup;
+       }
+    }
+  else
+    {
+      warn ();
+      result = ASN1_DER_ERROR;
+      goto cleanup;
+    }
+
+  *str = total;
+  *str_len = total_size;
+
+  return ASN1_SUCCESS;
+cleanup:
+  free (out);
+  free (total);
+  return result;
+}
+
+/**
+ * asn1_decode_simple_ber:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @der: the encoded string
+ * @_der_len: the bytes of the encoded string
+ * @str: a pointer to the data
+ * @str_len: the length of the data
+ * @ber_len: the total length occupied by BER (may be %NULL)
+ *
+ * Decodes a BER encoded type. The output is an allocated value
+ * of the data. This decodes BER STRINGS only. Other types are
+ * decoded as DER.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ **/
+int
+asn1_decode_simple_ber (unsigned int etype, const unsigned char *der,
+                       unsigned int _der_len, unsigned char **str,
+                       unsigned int *str_len, unsigned int *ber_len)
+{
+  return _asn1_decode_simple_ber (etype, der, _der_len, str, str_len, ber_len,
+                                 DECODE_FLAG_HAVE_TAG);
+}
diff --git a/grub-core/lib/libtasn1/lib/element.c 
b/grub-core/lib/libtasn1/lib/element.c
new file mode 100644
index 000000000..d4c558e10
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/element.c
@@ -0,0 +1,1109 @@
+/*
+ * Copyright (C) 2000-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+/*****************************************************/
+/* File: element.c                                   */
+/* Description: Functions with the read and write    */
+/*   functions.                                      */
+/*****************************************************/
+
+
+#include <int.h>
+#include "parser_aux.h"
+#include <gstr.h>
+#include "structure.h"
+#include "c-ctype.h"
+#include "element.h"
+
+void
+_asn1_hierarchical_name (asn1_node_const node, char *name, int name_size)
+{
+  asn1_node_const p;
+  char tmp_name[64];
+
+  p = node;
+
+  name[0] = 0;
+
+  while (p != NULL)
+    {
+      if (p->name[0] != 0)
+       {
+         _asn1_str_cpy (tmp_name, sizeof (tmp_name), name),
+           _asn1_str_cpy (name, name_size, p->name);
+         _asn1_str_cat (name, name_size, ".");
+         _asn1_str_cat (name, name_size, tmp_name);
+       }
+      p = _asn1_find_up (p);
+    }
+
+  if (name[0] == 0)
+    _asn1_str_cpy (name, name_size, "ROOT");
+}
+
+
+/******************************************************************/
+/* Function : _asn1_convert_integer                               */
+/* Description: converts an integer from a null terminated string */
+/*              to der decoding. The convertion from a null       */
+/*              terminated string to an integer is made with      */
+/*              the 'strtol' function.                            */
+/* Parameters:                                                    */
+/*   value: null terminated string to convert.                    */
+/*   value_out: convertion result (memory must be already         */
+/*              allocated).                                       */
+/*   value_out_size: number of bytes of value_out.                */
+/*   len: number of significant byte of value_out.                */
+/* Return: ASN1_MEM_ERROR or ASN1_SUCCESS                         */
+/******************************************************************/
+int
+_asn1_convert_integer (const unsigned char *value, unsigned char *value_out,
+                      int value_out_size, int *len)
+{
+  char negative;
+  unsigned char val[SIZEOF_UNSIGNED_LONG_INT];
+  long valtmp;
+  int k, k2;
+
+  valtmp = _asn1_strtol (value, NULL, 10);
+
+  for (k = 0; k < SIZEOF_UNSIGNED_LONG_INT; k++)
+    {
+      val[SIZEOF_UNSIGNED_LONG_INT - k - 1] = (valtmp >> (8 * k)) & 0xFF;
+    }
+
+  if (val[0] & 0x80)
+    negative = 1;
+  else
+    negative = 0;
+
+  for (k = 0; k < SIZEOF_UNSIGNED_LONG_INT - 1; k++)
+    {
+      if (negative && (val[k] != 0xFF))
+       break;
+      else if (!negative && val[k])
+       break;
+    }
+
+  if ((negative && !(val[k] & 0x80)) || (!negative && (val[k] & 0x80)))
+    k--;
+
+  *len = SIZEOF_UNSIGNED_LONG_INT - k;
+
+  if (SIZEOF_UNSIGNED_LONG_INT - k > value_out_size)
+    /* VALUE_OUT is too short to contain the value conversion */
+    return ASN1_MEM_ERROR;
+
+  if (value_out != NULL)
+    {
+      for (k2 = k; k2 < SIZEOF_UNSIGNED_LONG_INT; k2++)
+       value_out[k2 - k] = val[k2];
+    }
+
+#if 0
+  printf ("_asn1_convert_integer: valueIn=%s, lenOut=%d", value, *len);
+  for (k = 0; k < SIZEOF_UNSIGNED_LONG_INT; k++)
+    printf (", vOut[%d]=%d", k, value_out[k]);
+  printf ("\n");
+#endif
+
+  return ASN1_SUCCESS;
+}
+
+/* Appends a new element into the sequence (or set) defined by this
+ * node. The new element will have a name of '?number', where number
+ * is a monotonically increased serial number.
+ *
+ * The last element in the list may be provided in @pcache, to avoid
+ * traversing the list, an expensive operation in long lists.
+ *
+ * On success it returns in @pcache the added element (which is the
+ * tail in the list of added elements).
+ */
+int
+_asn1_append_sequence_set (asn1_node node, struct node_tail_cache_st *pcache)
+{
+  asn1_node p, p2;
+  char temp[LTOSTR_MAX_SIZE + 1];
+  long n;
+
+  if (!node || !(node->down))
+    return ASN1_GENERIC_ERROR;
+
+  p = node->down;
+  while ((type_field (p->type) == ASN1_ETYPE_TAG)
+        || (type_field (p->type) == ASN1_ETYPE_SIZE))
+    p = p->right;
+
+  p2 = _asn1_copy_structure3 (p);
+  if (p2 == NULL)
+    return ASN1_GENERIC_ERROR;
+
+  if (pcache == NULL || pcache->tail == NULL || pcache->head != node)
+    {
+      while (p->right)
+       {
+         p = p->right;
+       }
+    }
+  else
+    {
+      p = pcache->tail;
+    }
+
+  _asn1_set_right (p, p2);
+  if (pcache)
+    {
+      pcache->head = node;
+      pcache->tail = p2;
+    }
+
+  if (p->name[0] == 0)
+    _asn1_str_cpy (temp, sizeof (temp), "?1");
+  else
+    {
+      n = strtol (p->name + 1, NULL, 0);
+      n++;
+      temp[0] = '?';
+      _asn1_ltostr (n, temp + 1);
+    }
+  _asn1_set_name (p2, temp);
+  /*  p2->type |= CONST_OPTION; */
+
+  return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_write_value:
+ * @node_root: pointer to a structure
+ * @name: the name of the element inside the structure that you want to set.
+ * @ivalue: vector used to specify the value to set. If len is >0,
+ *   VALUE must be a two's complement form integer.  if len=0 *VALUE
+ *   must be a null terminated string with an integer value.
+ * @len: number of bytes of *value to use to set the value:
+ *   value[0]..value[len-1] or 0 if value is a null terminated string
+ *
+ * Set the value of one element inside a structure.
+ *
+ * If an element is OPTIONAL and you want to delete it, you must use
+ * the value=NULL and len=0.  Using "pkix.asn":
+ *
+ * result=asn1_write_value(cert, "tbsCertificate.issuerUniqueID",
+ * NULL, 0);
+ *
+ * Description for each type:
+ *
+ * INTEGER: VALUE must contain a two's complement form integer.
+ *
+ *            value[0]=0xFF ,               len=1 -> integer=-1.
+ *            value[0]=0xFF value[1]=0xFF , len=2 -> integer=-1.
+ *            value[0]=0x01 ,               len=1 -> integer= 1.
+ *            value[0]=0x00 value[1]=0x01 , len=2 -> integer= 1.
+ *            value="123"                 , len=0 -> integer= 123.
+ *
+ * ENUMERATED: As INTEGER (but only with not negative numbers).
+ *
+ * BOOLEAN: VALUE must be the null terminated string "TRUE" or
+ *   "FALSE" and LEN != 0.
+ *
+ *            value="TRUE" , len=1 -> boolean=TRUE.
+ *            value="FALSE" , len=1 -> boolean=FALSE.
+ *
+ * OBJECT IDENTIFIER: VALUE must be a null terminated string with
+ *   each number separated by a dot (e.g. "1.2.3.543.1").  LEN != 0.
+ *
+ *            value="1 2 840 10040 4 3" , len=1 -> OID=dsa-with-sha.
+ *
+ * UTCTime: VALUE must be a null terminated string in one of these
+ *   formats: "YYMMDDhhmmssZ", "YYMMDDhhmmssZ",
+ *   "YYMMDDhhmmss+hh'mm'", "YYMMDDhhmmss-hh'mm'",
+ *   "YYMMDDhhmm+hh'mm'", or "YYMMDDhhmm-hh'mm'".  LEN != 0.
+ *
+ *            value="9801011200Z" , len=1 -> time=Jannuary 1st, 1998
+ *            at 12h 00m Greenwich Mean Time
+ *
+ * GeneralizedTime: VALUE must be in one of this format:
+ *   "YYYYMMDDhhmmss.sZ", "YYYYMMDDhhmmss.sZ",
+ *   "YYYYMMDDhhmmss.s+hh'mm'", "YYYYMMDDhhmmss.s-hh'mm'",
+ *   "YYYYMMDDhhmm+hh'mm'", or "YYYYMMDDhhmm-hh'mm'" where ss.s
+ *   indicates the seconds with any precision like "10.1" or "01.02".
+ *   LEN != 0
+ *
+ *            value="2001010112001.12-0700" , len=1 -> time=Jannuary
+ *            1st, 2001 at 12h 00m 01.12s Pacific Daylight Time
+ *
+ * OCTET STRING: VALUE contains the octet string and LEN is the
+ *   number of octets.
+ *
+ *            value="$\backslash$x01$\backslash$x02$\backslash$x03" ,
+ *            len=3 -> three bytes octet string
+ *
+ * GeneralString: VALUE contains the generalstring and LEN is the
+ *   number of octets.
+ *
+ *            value="$\backslash$x01$\backslash$x02$\backslash$x03" ,
+ *            len=3 -> three bytes generalstring
+ *
+ * BIT STRING: VALUE contains the bit string organized by bytes and
+ *   LEN is the number of bits.
+ *
+ *   value="$\backslash$xCF" , len=6 -> bit string="110011" (six
+ *   bits)
+ *
+ * CHOICE: if NAME indicates a choice type, VALUE must specify one of
+ *   the alternatives with a null terminated string. LEN != 0. Using
+ *   "pkix.asn"\:
+ *
+ *           result=asn1_write_value(cert,
+ *           "certificate1.tbsCertificate.subject", "rdnSequence",
+ *           1);
+ *
+ * ANY: VALUE indicates the der encoding of a structure.  LEN != 0.
+ *
+ * SEQUENCE OF: VALUE must be the null terminated string "NEW" and
+ *   LEN != 0. With this instruction another element is appended in
+ *   the sequence. The name of this element will be "?1" if it's the
+ *   first one, "?2" for the second and so on.
+ *
+ *   Using "pkix.asn"\:
+ *
+ *   result=asn1_write_value(cert,
+ *   "certificate1.tbsCertificate.subject.rdnSequence", "NEW", 1);
+ *
+ * SET OF: the same as SEQUENCE OF.  Using "pkix.asn":
+ *
+ *           result=asn1_write_value(cert,
+ *           "tbsCertificate.subject.rdnSequence.?LAST", "NEW", 1);
+ *
+ * Returns: %ASN1_SUCCESS if the value was set,
+ *   %ASN1_ELEMENT_NOT_FOUND if @name is not a valid element, and
+ *   %ASN1_VALUE_NOT_VALID if @ivalue has a wrong format.
+ **/
+int
+asn1_write_value (asn1_node node_root, const char *name,
+                 const void *ivalue, int len)
+{
+  asn1_node node, p, p2;
+  unsigned char *temp, *value_temp = NULL, *default_temp = NULL;
+  int len2, k, k2, negative;
+  size_t i;
+  const unsigned char *value = ivalue;
+  unsigned int type;
+
+  node = asn1_find_node (node_root, name);
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  if ((node->type & CONST_OPTION) && (value == NULL) && (len == 0))
+    {
+      asn1_delete_structure (&node);
+      return ASN1_SUCCESS;
+    }
+
+  type = type_field (node->type);
+
+  if ((type == ASN1_ETYPE_SEQUENCE_OF || type == ASN1_ETYPE_SET_OF)
+      && (value == NULL) && (len == 0))
+    {
+      p = node->down;
+      while ((type_field (p->type) == ASN1_ETYPE_TAG)
+            || (type_field (p->type) == ASN1_ETYPE_SIZE))
+       p = p->right;
+
+      while (p->right)
+       asn1_delete_structure (&p->right);
+
+      return ASN1_SUCCESS;
+    }
+
+  /* Don't allow element deletion for other types */
+  if (value == NULL)
+    {
+      return ASN1_VALUE_NOT_VALID;
+    }
+
+  switch (type)
+    {
+    case ASN1_ETYPE_BOOLEAN:
+      if (!_asn1_strcmp (value, "TRUE"))
+       {
+         if (node->type & CONST_DEFAULT)
+           {
+             p = node->down;
+             while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+               p = p->right;
+             if (p->type & CONST_TRUE)
+               _asn1_set_value (node, NULL, 0);
+             else
+               _asn1_set_value (node, "T", 1);
+           }
+         else
+           _asn1_set_value (node, "T", 1);
+       }
+      else if (!_asn1_strcmp (value, "FALSE"))
+       {
+         if (node->type & CONST_DEFAULT)
+           {
+             p = node->down;
+             while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+               p = p->right;
+             if (p->type & CONST_FALSE)
+               _asn1_set_value (node, NULL, 0);
+             else
+               _asn1_set_value (node, "F", 1);
+           }
+         else
+           _asn1_set_value (node, "F", 1);
+       }
+      else
+       return ASN1_VALUE_NOT_VALID;
+      break;
+    case ASN1_ETYPE_INTEGER:
+    case ASN1_ETYPE_ENUMERATED:
+      if (len == 0)
+       {
+         if ((c_isdigit (value[0])) || (value[0] == '-'))
+           {
+             value_temp = malloc (SIZEOF_UNSIGNED_LONG_INT);
+             if (value_temp == NULL)
+               return ASN1_MEM_ALLOC_ERROR;
+
+             _asn1_convert_integer (value, value_temp,
+                                    SIZEOF_UNSIGNED_LONG_INT, &len);
+           }
+         else
+           {                   /* is an identifier like v1 */
+             if (!(node->type & CONST_LIST))
+               return ASN1_VALUE_NOT_VALID;
+             p = node->down;
+             while (p)
+               {
+                 if (type_field (p->type) == ASN1_ETYPE_CONSTANT)
+                   {
+                     if (!_asn1_strcmp (p->name, value))
+                       {
+                         value_temp = malloc (SIZEOF_UNSIGNED_LONG_INT);
+                         if (value_temp == NULL)
+                           return ASN1_MEM_ALLOC_ERROR;
+
+                         _asn1_convert_integer (p->value,
+                                                value_temp,
+                                                SIZEOF_UNSIGNED_LONG_INT,
+                                                &len);
+                         break;
+                       }
+                   }
+                 p = p->right;
+               }
+             if (p == NULL)
+               return ASN1_VALUE_NOT_VALID;
+           }
+       }
+      else
+       {                       /* len != 0 */
+         value_temp = malloc (len);
+         if (value_temp == NULL)
+           return ASN1_MEM_ALLOC_ERROR;
+         memcpy (value_temp, value, len);
+       }
+
+      if (value_temp[0] & 0x80)
+       negative = 1;
+      else
+       negative = 0;
+
+      if (negative && (type_field (node->type) == ASN1_ETYPE_ENUMERATED))
+       {
+         free (value_temp);
+         return ASN1_VALUE_NOT_VALID;
+       }
+
+      for (k = 0; k < len - 1; k++)
+       if (negative && (value_temp[k] != 0xFF))
+         break;
+       else if (!negative && value_temp[k])
+         break;
+
+      if ((negative && !(value_temp[k] & 0x80)) ||
+         (!negative && (value_temp[k] & 0x80)))
+       k--;
+
+      _asn1_set_value_lv (node, value_temp + k, len - k);
+
+      if (node->type & CONST_DEFAULT)
+       {
+         p = node->down;
+         while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+           p = p->right;
+         if ((c_isdigit (p->value[0])) || (p->value[0] == '-'))
+           {
+             default_temp = malloc (SIZEOF_UNSIGNED_LONG_INT);
+             if (default_temp == NULL)
+               {
+                 free (value_temp);
+                 return ASN1_MEM_ALLOC_ERROR;
+               }
+
+             _asn1_convert_integer (p->value, default_temp,
+                                    SIZEOF_UNSIGNED_LONG_INT, &len2);
+           }
+         else
+           {                   /* is an identifier like v1 */
+             if (!(node->type & CONST_LIST))
+               {
+                 free (value_temp);
+                 return ASN1_VALUE_NOT_VALID;
+               }
+             p2 = node->down;
+             while (p2)
+               {
+                 if (type_field (p2->type) == ASN1_ETYPE_CONSTANT)
+                   {
+                     if (!_asn1_strcmp (p2->name, p->value))
+                       {
+                         default_temp = malloc (SIZEOF_UNSIGNED_LONG_INT);
+                         if (default_temp == NULL)
+                           {
+                             free (value_temp);
+                             return ASN1_MEM_ALLOC_ERROR;
+                           }
+
+                         _asn1_convert_integer (p2->value,
+                                                default_temp,
+                                                SIZEOF_UNSIGNED_LONG_INT,
+                                                &len2);
+                         break;
+                       }
+                   }
+                 p2 = p2->right;
+               }
+             if (p2 == NULL)
+               {
+                 free (value_temp);
+                 return ASN1_VALUE_NOT_VALID;
+               }
+           }
+
+
+         if ((len - k) == len2)
+           {
+             for (k2 = 0; k2 < len2; k2++)
+               if (value_temp[k + k2] != default_temp[k2])
+                 {
+                   break;
+                 }
+             if (k2 == len2)
+               _asn1_set_value (node, NULL, 0);
+           }
+         free (default_temp);
+       }
+      free (value_temp);
+      break;
+    case ASN1_ETYPE_OBJECT_ID:
+      for (i = 0; i < _asn1_strlen (value); i++)
+       if ((!c_isdigit (value[i])) && (value[i] != '.') && (value[i] != '+'))
+         return ASN1_VALUE_NOT_VALID;
+      if (node->type & CONST_DEFAULT)
+       {
+         p = node->down;
+         while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+           p = p->right;
+         if (!_asn1_strcmp (value, p->value))
+           {
+             _asn1_set_value (node, NULL, 0);
+             break;
+           }
+       }
+      _asn1_set_value (node, value, _asn1_strlen (value) + 1);
+      break;
+    case ASN1_ETYPE_UTC_TIME:
+      {
+       len = _asn1_strlen (value);
+       if (len < 11)
+         return ASN1_VALUE_NOT_VALID;
+       for (k = 0; k < 10; k++)
+         if (!c_isdigit (value[k]))
+           return ASN1_VALUE_NOT_VALID;
+       switch (len)
+         {
+         case 11:
+           if (value[10] != 'Z')
+             return ASN1_VALUE_NOT_VALID;
+           break;
+         case 13:
+           if ((!c_isdigit (value[10])) || (!c_isdigit (value[11])) ||
+               (value[12] != 'Z'))
+             return ASN1_VALUE_NOT_VALID;
+           break;
+         case 15:
+           if ((value[10] != '+') && (value[10] != '-'))
+             return ASN1_VALUE_NOT_VALID;
+           for (k = 11; k < 15; k++)
+             if (!c_isdigit (value[k]))
+               return ASN1_VALUE_NOT_VALID;
+           break;
+         case 17:
+           if ((!c_isdigit (value[10])) || (!c_isdigit (value[11])))
+             return ASN1_VALUE_NOT_VALID;
+           if ((value[12] != '+') && (value[12] != '-'))
+             return ASN1_VALUE_NOT_VALID;
+           for (k = 13; k < 17; k++)
+             if (!c_isdigit (value[k]))
+               return ASN1_VALUE_NOT_VALID;
+           break;
+         default:
+           return ASN1_VALUE_NOT_FOUND;
+         }
+       _asn1_set_value (node, value, len);
+      }
+      break;
+    case ASN1_ETYPE_GENERALIZED_TIME:
+      len = _asn1_strlen (value);
+      _asn1_set_value (node, value, len);
+      break;
+    case ASN1_ETYPE_OCTET_STRING:
+    case ASN1_ETYPE_GENERALSTRING:
+    case ASN1_ETYPE_NUMERIC_STRING:
+    case ASN1_ETYPE_IA5_STRING:
+    case ASN1_ETYPE_TELETEX_STRING:
+    case ASN1_ETYPE_PRINTABLE_STRING:
+    case ASN1_ETYPE_UNIVERSAL_STRING:
+    case ASN1_ETYPE_BMP_STRING:
+    case ASN1_ETYPE_UTF8_STRING:
+    case ASN1_ETYPE_VISIBLE_STRING:
+      if (len == 0)
+       len = _asn1_strlen (value);
+      _asn1_set_value_lv (node, value, len);
+      break;
+    case ASN1_ETYPE_BIT_STRING:
+      if (len == 0)
+       len = _asn1_strlen (value);
+      asn1_length_der ((len >> 3) + 2, NULL, &len2);
+      temp = malloc ((len >> 3) + 2 + len2);
+      if (temp == NULL)
+       return ASN1_MEM_ALLOC_ERROR;
+
+      asn1_bit_der (value, len, temp, &len2);
+      _asn1_set_value_m (node, temp, len2);
+      temp = NULL;
+      break;
+    case ASN1_ETYPE_CHOICE:
+      p = node->down;
+      while (p)
+       {
+         if (!_asn1_strcmp (p->name, value))
+           {
+             p2 = node->down;
+             while (p2)
+               {
+                 if (p2 != p)
+                   {
+                     asn1_delete_structure (&p2);
+                     p2 = node->down;
+                   }
+                 else
+                   p2 = p2->right;
+               }
+             break;
+           }
+         p = p->right;
+       }
+      if (!p)
+       return ASN1_ELEMENT_NOT_FOUND;
+      break;
+    case ASN1_ETYPE_ANY:
+      _asn1_set_value_lv (node, value, len);
+      break;
+    case ASN1_ETYPE_SEQUENCE_OF:
+    case ASN1_ETYPE_SET_OF:
+      if (_asn1_strcmp (value, "NEW"))
+       return ASN1_VALUE_NOT_VALID;
+      _asn1_append_sequence_set (node, NULL);
+      break;
+    default:
+      return ASN1_ELEMENT_NOT_FOUND;
+      break;
+    }
+
+  return ASN1_SUCCESS;
+}
+
+
+#define PUT_VALUE( ptr, ptr_size, data, data_size) \
+       *len = data_size; \
+       if (ptr_size < data_size) { \
+               return ASN1_MEM_ERROR; \
+       } else { \
+               if (ptr && data_size > 0) \
+                 memcpy (ptr, data, data_size); \
+       }
+
+#define PUT_STR_VALUE( ptr, ptr_size, data) \
+       *len = _asn1_strlen (data) + 1; \
+       if (ptr_size < *len) { \
+               return ASN1_MEM_ERROR; \
+       } else { \
+               /* this strcpy is checked */ \
+               if (ptr) { \
+                 _asn1_strcpy (ptr, data); \
+               } \
+       }
+
+#define PUT_AS_STR_VALUE( ptr, ptr_size, data, data_size) \
+       *len = data_size + 1; \
+       if (ptr_size < *len) { \
+               return ASN1_MEM_ERROR; \
+       } else { \
+               /* this strcpy is checked */ \
+               if (ptr) { \
+                 if (data_size > 0) \
+                   memcpy (ptr, data, data_size); \
+                 ptr[data_size] = 0; \
+               } \
+       }
+
+#define ADD_STR_VALUE( ptr, ptr_size, data) \
+        *len += _asn1_strlen(data); \
+        if (ptr_size < (int) *len) { \
+                (*len)++; \
+                return ASN1_MEM_ERROR; \
+        } else { \
+                /* this strcat is checked */ \
+                if (ptr) _asn1_strcat (ptr, data); \
+        }
+
+/**
+ * asn1_read_value:
+ * @root: pointer to a structure.
+ * @name: the name of the element inside a structure that you want to read.
+ * @ivalue: vector that will contain the element's content, must be a
+ *   pointer to memory cells already allocated (may be %NULL).
+ * @len: number of bytes of *value: value[0]..value[len-1]. Initialy
+ *   holds the sizeof value.
+ *
+ * Returns the value of one element inside a structure.
+ * If an element is OPTIONAL and this returns
+ * %ASN1_ELEMENT_NOT_FOUND, it means that this element wasn't present
+ * in the der encoding that created the structure.  The first element
+ * of a SEQUENCE_OF or SET_OF is named "?1". The second one "?2" and
+ * so on. If the @root provided is a node to specific sequence element,
+ * then the keyword "?CURRENT" is also acceptable and indicates the
+ * current sequence element of this node.
+ *
+ * Note that there can be valid values with length zero. In these case
+ * this function will succeed and @len will be zero.
+ *
+ * INTEGER: VALUE will contain a two's complement form integer.
+ *
+ *            integer=-1  -> value[0]=0xFF , len=1.
+ *            integer=1   -> value[0]=0x01 , len=1.
+ *
+ * ENUMERATED: As INTEGER (but only with not negative numbers).
+ *
+ * BOOLEAN: VALUE will be the null terminated string "TRUE" or
+ *   "FALSE" and LEN=5 or LEN=6.
+ *
+ * OBJECT IDENTIFIER: VALUE will be a null terminated string with
+ *   each number separated by a dot (i.e. "1.2.3.543.1").
+ *
+ *                      LEN = strlen(VALUE)+1
+ *
+ * UTCTime: VALUE will be a null terminated string in one of these
+ *   formats: "YYMMDDhhmmss+hh'mm'" or "YYMMDDhhmmss-hh'mm'".
+ *   LEN=strlen(VALUE)+1.
+ *
+ * GeneralizedTime: VALUE will be a null terminated string in the
+ *   same format used to set the value.
+ *
+ * OCTET STRING: VALUE will contain the octet string and LEN will be
+ *   the number of octets.
+ *
+ * GeneralString: VALUE will contain the generalstring and LEN will
+ *   be the number of octets.
+ *
+ * BIT STRING: VALUE will contain the bit string organized by bytes
+ *   and LEN will be the number of bits.
+ *
+ * CHOICE: If NAME indicates a choice type, VALUE will specify the
+ *   alternative selected.
+ *
+ * ANY: If NAME indicates an any type, VALUE will indicate the DER
+ *   encoding of the structure actually used.
+ *
+ * Returns: %ASN1_SUCCESS if value is returned,
+ *   %ASN1_ELEMENT_NOT_FOUND if @name is not a valid element,
+ *   %ASN1_VALUE_NOT_FOUND if there isn't any value for the element
+ *   selected, and %ASN1_MEM_ERROR if The value vector isn't big enough
+ *   to store the result, and in this case @len will contain the number of
+ *   bytes needed. On the occasion that the stored data are of zero-length
+ *   this function may return %ASN1_SUCCESS even if the provided @len is zero.
+ **/
+int
+asn1_read_value (asn1_node_const root, const char *name, void *ivalue,
+                int *len)
+{
+  return asn1_read_value_type (root, name, ivalue, len, NULL);
+}
+
+/**
+ * asn1_read_value_type:
+ * @root: pointer to a structure.
+ * @name: the name of the element inside a structure that you want to read.
+ * @ivalue: vector that will contain the element's content, must be a
+ *   pointer to memory cells already allocated (may be %NULL).
+ * @len: number of bytes of *value: value[0]..value[len-1]. Initialy
+ *   holds the sizeof value.
+ * @etype: The type of the value read (ASN1_ETYPE)
+ *
+ * Returns the type and value of one element inside a structure.
+ * If an element is OPTIONAL and this returns
+ * %ASN1_ELEMENT_NOT_FOUND, it means that this element wasn't present
+ * in the der encoding that created the structure.  The first element
+ * of a SEQUENCE_OF or SET_OF is named "?1". The second one "?2" and
+ * so on. If the @root provided is a node to specific sequence element,
+ * then the keyword "?CURRENT" is also acceptable and indicates the
+ * current sequence element of this node.
+ *
+ * Note that there can be valid values with length zero. In these case
+ * this function will succeed and @len will be zero.
+ *
+ *
+ * INTEGER: VALUE will contain a two's complement form integer.
+ *
+ *            integer=-1  -> value[0]=0xFF , len=1.
+ *            integer=1   -> value[0]=0x01 , len=1.
+ *
+ * ENUMERATED: As INTEGER (but only with not negative numbers).
+ *
+ * BOOLEAN: VALUE will be the null terminated string "TRUE" or
+ *   "FALSE" and LEN=5 or LEN=6.
+ *
+ * OBJECT IDENTIFIER: VALUE will be a null terminated string with
+ *   each number separated by a dot (i.e. "1.2.3.543.1").
+ *
+ *                      LEN = strlen(VALUE)+1
+ *
+ * UTCTime: VALUE will be a null terminated string in one of these
+ *   formats: "YYMMDDhhmmss+hh'mm'" or "YYMMDDhhmmss-hh'mm'".
+ *   LEN=strlen(VALUE)+1.
+ *
+ * GeneralizedTime: VALUE will be a null terminated string in the
+ *   same format used to set the value.
+ *
+ * OCTET STRING: VALUE will contain the octet string and LEN will be
+ *   the number of octets.
+ *
+ * GeneralString: VALUE will contain the generalstring and LEN will
+ *   be the number of octets.
+ *
+ * BIT STRING: VALUE will contain the bit string organized by bytes
+ *   and LEN will be the number of bits.
+ *
+ * CHOICE: If NAME indicates a choice type, VALUE will specify the
+ *   alternative selected.
+ *
+ * ANY: If NAME indicates an any type, VALUE will indicate the DER
+ *   encoding of the structure actually used.
+ *
+ * Returns: %ASN1_SUCCESS if value is returned,
+ *   %ASN1_ELEMENT_NOT_FOUND if @name is not a valid element,
+ *   %ASN1_VALUE_NOT_FOUND if there isn't any value for the element
+ *   selected, and %ASN1_MEM_ERROR if The value vector isn't big enough
+ *   to store the result, and in this case @len will contain the number of
+ *   bytes needed. On the occasion that the stored data are of zero-length
+ *   this function may return %ASN1_SUCCESS even if the provided @len is zero.
+ **/
+int
+asn1_read_value_type (asn1_node_const root, const char *name, void *ivalue,
+                     int *len, unsigned int *etype)
+{
+  asn1_node_const node, p, p2;
+  int len2, len3, result;
+  int value_size = *len;
+  unsigned char *value = ivalue;
+  unsigned type;
+
+  node = asn1_find_node (root, name);
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  type = type_field (node->type);
+
+  if ((type != ASN1_ETYPE_NULL) &&
+      (type != ASN1_ETYPE_CHOICE) &&
+      !(node->type & CONST_DEFAULT) && !(node->type & CONST_ASSIGN) &&
+      (node->value == NULL))
+    return ASN1_VALUE_NOT_FOUND;
+
+  if (etype)
+    *etype = type;
+  switch (type)
+    {
+    case ASN1_ETYPE_NULL:
+      PUT_STR_VALUE (value, value_size, "NULL");
+      break;
+    case ASN1_ETYPE_BOOLEAN:
+      if ((node->type & CONST_DEFAULT) && (node->value == NULL))
+       {
+         p = node->down;
+         while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+           p = p->right;
+         if (p->type & CONST_TRUE)
+           {
+             PUT_STR_VALUE (value, value_size, "TRUE");
+           }
+         else
+           {
+             PUT_STR_VALUE (value, value_size, "FALSE");
+           }
+       }
+      else if (node->value[0] == 'T')
+       {
+         PUT_STR_VALUE (value, value_size, "TRUE");
+       }
+      else
+       {
+         PUT_STR_VALUE (value, value_size, "FALSE");
+       }
+      break;
+    case ASN1_ETYPE_INTEGER:
+    case ASN1_ETYPE_ENUMERATED:
+      if ((node->type & CONST_DEFAULT) && (node->value == NULL))
+       {
+         p = node->down;
+         while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+           p = p->right;
+         if ((c_isdigit (p->value[0])) || (p->value[0] == '-')
+             || (p->value[0] == '+'))
+           {
+             result = _asn1_convert_integer
+               (p->value, value, value_size, len);
+             if (result != ASN1_SUCCESS)
+               return result;
+           }
+         else
+           {                   /* is an identifier like v1 */
+             p2 = node->down;
+             while (p2)
+               {
+                 if (type_field (p2->type) == ASN1_ETYPE_CONSTANT)
+                   {
+                     if (!_asn1_strcmp (p2->name, p->value))
+                       {
+                         result = _asn1_convert_integer
+                           (p2->value, value, value_size, len);
+                         if (result != ASN1_SUCCESS)
+                           return result;
+                         break;
+                       }
+                   }
+                 p2 = p2->right;
+               }
+           }
+       }
+      else
+       {
+         len2 = -1;
+         result = asn1_get_octet_der
+           (node->value, node->value_len, &len2, value, value_size, len);
+         if (result != ASN1_SUCCESS)
+           return result;
+       }
+      break;
+    case ASN1_ETYPE_OBJECT_ID:
+      if (node->type & CONST_ASSIGN)
+       {
+         *len = 0;
+         if (value)
+           value[0] = 0;
+         p = node->down;
+         while (p)
+           {
+             if (type_field (p->type) == ASN1_ETYPE_CONSTANT)
+               {
+                 ADD_STR_VALUE (value, value_size, p->value);
+                 if (p->right)
+                   {
+                     ADD_STR_VALUE (value, value_size, ".");
+                   }
+               }
+             p = p->right;
+           }
+         (*len)++;
+       }
+      else if ((node->type & CONST_DEFAULT) && (node->value == NULL))
+       {
+         p = node->down;
+         while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+           p = p->right;
+         PUT_STR_VALUE (value, value_size, p->value);
+       }
+      else
+       {
+         PUT_STR_VALUE (value, value_size, node->value);
+       }
+      break;
+    case ASN1_ETYPE_GENERALIZED_TIME:
+    case ASN1_ETYPE_UTC_TIME:
+      PUT_AS_STR_VALUE (value, value_size, node->value, node->value_len);
+      break;
+    case ASN1_ETYPE_OCTET_STRING:
+    case ASN1_ETYPE_GENERALSTRING:
+    case ASN1_ETYPE_NUMERIC_STRING:
+    case ASN1_ETYPE_IA5_STRING:
+    case ASN1_ETYPE_TELETEX_STRING:
+    case ASN1_ETYPE_PRINTABLE_STRING:
+    case ASN1_ETYPE_UNIVERSAL_STRING:
+    case ASN1_ETYPE_BMP_STRING:
+    case ASN1_ETYPE_UTF8_STRING:
+    case ASN1_ETYPE_VISIBLE_STRING:
+      len2 = -1;
+      result = asn1_get_octet_der
+       (node->value, node->value_len, &len2, value, value_size, len);
+      if (result != ASN1_SUCCESS)
+       return result;
+      break;
+    case ASN1_ETYPE_BIT_STRING:
+      len2 = -1;
+      result = asn1_get_bit_der
+       (node->value, node->value_len, &len2, value, value_size, len);
+      if (result != ASN1_SUCCESS)
+       return result;
+      break;
+    case ASN1_ETYPE_CHOICE:
+      PUT_STR_VALUE (value, value_size, node->down->name);
+      break;
+    case ASN1_ETYPE_ANY:
+      len3 = -1;
+      len2 = asn1_get_length_der (node->value, node->value_len, &len3);
+      if (len2 < 0)
+       return ASN1_DER_ERROR;
+      PUT_VALUE (value, value_size, node->value + len3, len2);
+      break;
+    default:
+      return ASN1_ELEMENT_NOT_FOUND;
+      break;
+    }
+  return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_read_tag:
+ * @root: pointer to a structure
+ * @name: the name of the element inside a structure.
+ * @tagValue:  variable that will contain the TAG value.
+ * @classValue: variable that will specify the TAG type.
+ *
+ * Returns the TAG and the CLASS of one element inside a structure.
+ * CLASS can have one of these constants: %ASN1_CLASS_APPLICATION,
+ * %ASN1_CLASS_UNIVERSAL, %ASN1_CLASS_PRIVATE or
+ * %ASN1_CLASS_CONTEXT_SPECIFIC.
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ *   @name is not a valid element.
+ **/
+int
+asn1_read_tag (asn1_node_const root, const char *name, int *tagValue,
+              int *classValue)
+{
+  asn1_node node, p, pTag;
+
+  node = asn1_find_node (root, name);
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = node->down;
+
+  /* pTag will points to the IMPLICIT TAG */
+  pTag = NULL;
+  if (node->type & CONST_TAG)
+    {
+      while (p)
+       {
+         if (type_field (p->type) == ASN1_ETYPE_TAG)
+           {
+             if ((p->type & CONST_IMPLICIT) && (pTag == NULL))
+               pTag = p;
+             else if (p->type & CONST_EXPLICIT)
+               pTag = NULL;
+           }
+         p = p->right;
+       }
+    }
+
+  if (pTag)
+    {
+      *tagValue = _asn1_strtoul (pTag->value, NULL, 10);
+
+      if (pTag->type & CONST_APPLICATION)
+       *classValue = ASN1_CLASS_APPLICATION;
+      else if (pTag->type & CONST_UNIVERSAL)
+       *classValue = ASN1_CLASS_UNIVERSAL;
+      else if (pTag->type & CONST_PRIVATE)
+       *classValue = ASN1_CLASS_PRIVATE;
+      else
+       *classValue = ASN1_CLASS_CONTEXT_SPECIFIC;
+    }
+  else
+    {
+      unsigned type = type_field (node->type);
+      *classValue = ASN1_CLASS_UNIVERSAL;
+
+      switch (type)
+       {
+       CASE_HANDLED_ETYPES:
+         *tagValue = _asn1_tags[type].tag;
+         break;
+       case ASN1_ETYPE_TAG:
+       case ASN1_ETYPE_CHOICE:
+       case ASN1_ETYPE_ANY:
+         *tagValue = -1;
+         break;
+       default:
+         break;
+       }
+    }
+
+  return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_read_node_value:
+ * @node: pointer to a node.
+ * @data: a point to a asn1_data_node_st
+ *
+ * Returns the value a data node inside a asn1_node structure.
+ * The data returned should be handled as constant values.
+ *
+ * Returns: %ASN1_SUCCESS if the node exists.
+ **/
+int
+asn1_read_node_value (asn1_node_const node, asn1_data_node_st * data)
+{
+  data->name = node->name;
+  data->value = node->value;
+  data->value_len = node->value_len;
+  data->type = type_field (node->type);
+
+  return ASN1_SUCCESS;
+}
diff --git a/grub-core/lib/libtasn1/lib/element.h 
b/grub-core/lib/libtasn1/lib/element.h
new file mode 100644
index 000000000..8dd0ceba8
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/element.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2000-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#ifndef _ELEMENT_H
+# define _ELEMENT_H
+
+
+struct node_tail_cache_st
+{
+  asn1_node head;              /* the first element of the sequence */
+  asn1_node tail;
+};
+
+int _asn1_append_sequence_set (asn1_node node,
+                              struct node_tail_cache_st *pcached);
+
+int _asn1_convert_integer (const unsigned char *value,
+                          unsigned char *value_out,
+                          int value_out_size, int *len);
+
+void _asn1_hierarchical_name (asn1_node_const node, char *name,
+                             int name_size);
+
+#endif
diff --git a/grub-core/lib/libtasn1/lib/errors.c 
b/grub-core/lib/libtasn1/lib/errors.c
new file mode 100644
index 000000000..aef5dfe6f
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/errors.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#include <int.h>
+#ifdef STDC_HEADERS
+# include <stdarg.h>
+#endif
+
+#define LIBTASN1_ERROR_ENTRY(name) { #name, name }
+
+struct libtasn1_error_entry
+{
+  const char *name;
+  int number;
+};
+typedef struct libtasn1_error_entry libtasn1_error_entry;
+
+static const libtasn1_error_entry error_algorithms[] = {
+  LIBTASN1_ERROR_ENTRY (ASN1_SUCCESS),
+  LIBTASN1_ERROR_ENTRY (ASN1_FILE_NOT_FOUND),
+  LIBTASN1_ERROR_ENTRY (ASN1_ELEMENT_NOT_FOUND),
+  LIBTASN1_ERROR_ENTRY (ASN1_IDENTIFIER_NOT_FOUND),
+  LIBTASN1_ERROR_ENTRY (ASN1_DER_ERROR),
+  LIBTASN1_ERROR_ENTRY (ASN1_VALUE_NOT_FOUND),
+  LIBTASN1_ERROR_ENTRY (ASN1_GENERIC_ERROR),
+  LIBTASN1_ERROR_ENTRY (ASN1_VALUE_NOT_VALID),
+  LIBTASN1_ERROR_ENTRY (ASN1_TAG_ERROR),
+  LIBTASN1_ERROR_ENTRY (ASN1_TAG_IMPLICIT),
+  LIBTASN1_ERROR_ENTRY (ASN1_ERROR_TYPE_ANY),
+  LIBTASN1_ERROR_ENTRY (ASN1_SYNTAX_ERROR),
+  LIBTASN1_ERROR_ENTRY (ASN1_MEM_ERROR),
+  LIBTASN1_ERROR_ENTRY (ASN1_MEM_ALLOC_ERROR),
+  LIBTASN1_ERROR_ENTRY (ASN1_DER_OVERFLOW),
+  LIBTASN1_ERROR_ENTRY (ASN1_NAME_TOO_LONG),
+  LIBTASN1_ERROR_ENTRY (ASN1_ARRAY_ERROR),
+  LIBTASN1_ERROR_ENTRY (ASN1_ELEMENT_NOT_EMPTY),
+  LIBTASN1_ERROR_ENTRY (ASN1_TIME_ENCODING_ERROR),
+  LIBTASN1_ERROR_ENTRY (ASN1_RECURSION),
+  {0, 0}
+};
+
+/**
+ * asn1_perror:
+ * @error: is an error returned by a libtasn1 function.
+ *
+ * Prints a string to stderr with a description of an error.  This
+ * function is like perror().  The only difference is that it accepts
+ * an error returned by a libtasn1 function.
+ *
+ * Since: 1.6
+ **/
+void
+asn1_perror (int error)
+{
+  const char *str = asn1_strerror (error);
+  fprintf (stderr, "LIBTASN1 ERROR: %s\n", str ? str : "(null)");
+}
+
+/**
+ * asn1_strerror:
+ * @error: is an error returned by a libtasn1 function.
+ *
+ * Returns a string with a description of an error.  This function is
+ * similar to strerror.  The only difference is that it accepts an
+ * error (number) returned by a libtasn1 function.
+ *
+ * Returns: Pointer to static zero-terminated string describing error
+ *   code.
+ *
+ * Since: 1.6
+ **/
+const char *
+asn1_strerror (int error)
+{
+  const libtasn1_error_entry *p;
+
+  for (p = error_algorithms; p->name != NULL; p++)
+    if (p->number == error)
+      return p->name + sizeof ("ASN1_") - 1;
+
+  return NULL;
+}
diff --git a/grub-core/lib/libtasn1/lib/gstr.c 
b/grub-core/lib/libtasn1/lib/gstr.c
new file mode 100644
index 000000000..eef419554
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/gstr.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#include <int.h>
+#include "gstr.h"
+
+/* These function are like strcat, strcpy. They only
+ * do bounds checking (they shouldn't cause buffer overruns),
+ * and they always produce null terminated strings.
+ *
+ * They should be used only with null terminated strings.
+ */
+void
+_asn1_str_cat (char *dest, size_t dest_tot_size, const char *src)
+{
+  size_t str_size = strlen (src);
+  size_t dest_size = strlen (dest);
+
+  if (dest_tot_size - dest_size > str_size)
+    {
+      strcat (dest, src);
+    }
+  else
+    {
+      if (dest_tot_size > dest_size)
+       {
+         strncat (dest, src, (dest_tot_size - dest_size) - 1);
+         dest[dest_tot_size - 1] = 0;
+       }
+    }
+}
+
+/* Returns the bytes copied (not including the null terminator) */
+unsigned int
+_asn1_str_cpy (char *dest, size_t dest_tot_size, const char *src)
+{
+  size_t str_size = strlen (src);
+
+  if (dest_tot_size > str_size)
+    {
+      strcpy (dest, src);
+      return str_size;
+    }
+  else
+    {
+      if (dest_tot_size > 0)
+       {
+         str_size = dest_tot_size - 1;
+         memcpy (dest, src, str_size);
+         dest[str_size] = 0;
+         return str_size;
+       }
+      else
+       return 0;
+    }
+}
diff --git a/grub-core/lib/libtasn1/lib/gstr.h 
b/grub-core/lib/libtasn1/lib/gstr.h
new file mode 100644
index 000000000..99be6c4af
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/gstr.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#ifndef GSTR_H
+# define GSTR_H
+
+unsigned int _asn1_str_cpy (char *dest, size_t dest_tot_size,
+                           const char *src);
+void _asn1_str_cat (char *dest, size_t dest_tot_size, const char *src);
+
+# define Estrcpy(x,y) _asn1_str_cpy(x,ASN1_MAX_ERROR_DESCRIPTION_SIZE,y)
+# define Estrcat(x,y) _asn1_str_cat(x,ASN1_MAX_ERROR_DESCRIPTION_SIZE,y)
+
+inline static void
+safe_memset (void *data, int c, size_t size)
+{
+  volatile unsigned volatile_zero = 0;
+  volatile char *vdata = (volatile char *) data;
+
+  /* This is based on a nice trick for safe memset,
+   * sent by David Jacobson in the openssl-dev mailing list.
+   */
+
+  if (size > 0)
+    do
+      {
+       memset (data, c, size);
+      }
+    while (vdata[volatile_zero] != c);
+}
+
+#endif /* GSTR_H */
diff --git a/grub-core/lib/libtasn1/lib/int.h b/grub-core/lib/libtasn1/lib/int.h
new file mode 100644
index 000000000..d94d51c8c
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/int.h
@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#ifndef INT_H
+# define INT_H
+
+# ifdef HAVE_CONFIG_H
+#  include <config.h>
+# endif
+
+# include <string.h>
+# include <stdlib.h>
+# include <stdio.h>
+# include <stdint.h>
+
+# ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h>
+# endif
+
+# include <libtasn1.h>
+
+# define ASN1_SMALL_VALUE_SIZE 16
+
+/* This structure is also in libtasn1.h, but then contains less
+   fields.  You cannot make any modifications to these first fields
+   without breaking ABI.  */
+struct asn1_node_st
+{
+  /* public fields: */
+  char name[ASN1_MAX_NAME_SIZE + 1];   /* Node name */
+  unsigned int name_hash;
+  unsigned int type;           /* Node type */
+  unsigned char *value;                /* Node value */
+  int value_len;
+  asn1_node down;              /* Pointer to the son node */
+  asn1_node right;             /* Pointer to the brother node */
+  asn1_node left;              /* Pointer to the next list element */
+  /* private fields: */
+  unsigned char small_value[ASN1_SMALL_VALUE_SIZE];    /* For small values */
+
+  /* values used during decoding/coding */
+  int tmp_ival;
+  unsigned start;              /* the start of the DER sequence - if decoded */
+  unsigned end;                        /* the end of the DER sequence - if 
decoded */
+};
+
+typedef struct tag_and_class_st
+{
+  unsigned tag;
+  unsigned class;
+  const char *desc;
+} tag_and_class_st;
+
+/* the types that are handled in _asn1_tags */
+# define CASE_HANDLED_ETYPES \
+       case ASN1_ETYPE_NULL: \
+       case ASN1_ETYPE_BOOLEAN: \
+       case ASN1_ETYPE_INTEGER: \
+       case ASN1_ETYPE_ENUMERATED: \
+       case ASN1_ETYPE_OBJECT_ID: \
+       case ASN1_ETYPE_OCTET_STRING: \
+       case ASN1_ETYPE_GENERALSTRING: \
+        case ASN1_ETYPE_NUMERIC_STRING: \
+        case ASN1_ETYPE_IA5_STRING: \
+        case ASN1_ETYPE_TELETEX_STRING: \
+        case ASN1_ETYPE_PRINTABLE_STRING: \
+        case ASN1_ETYPE_UNIVERSAL_STRING: \
+        case ASN1_ETYPE_BMP_STRING: \
+        case ASN1_ETYPE_UTF8_STRING: \
+        case ASN1_ETYPE_VISIBLE_STRING: \
+       case ASN1_ETYPE_BIT_STRING: \
+       case ASN1_ETYPE_SEQUENCE: \
+       case ASN1_ETYPE_SEQUENCE_OF: \
+       case ASN1_ETYPE_SET: \
+       case ASN1_ETYPE_UTC_TIME: \
+       case ASN1_ETYPE_GENERALIZED_TIME: \
+       case ASN1_ETYPE_SET_OF
+
+# define ETYPE_TAG(etype) (_asn1_tags[etype].tag)
+# define ETYPE_CLASS(etype) (_asn1_tags[etype].class)
+# define ETYPE_OK(etype) (((etype) != ASN1_ETYPE_INVALID && \
+                          (etype) < _asn1_tags_size && \
+                          _asn1_tags[(etype)].desc != NULL)?1:0)
+
+# define ETYPE_IS_STRING(etype) ((etype == ASN1_ETYPE_GENERALSTRING || \
+       etype == ASN1_ETYPE_NUMERIC_STRING || etype == ASN1_ETYPE_IA5_STRING || 
\
+       etype == ASN1_ETYPE_TELETEX_STRING || etype == 
ASN1_ETYPE_PRINTABLE_STRING || \
+       etype == ASN1_ETYPE_UNIVERSAL_STRING || etype == ASN1_ETYPE_BMP_STRING 
|| \
+       etype == ASN1_ETYPE_UTF8_STRING || etype == ASN1_ETYPE_VISIBLE_STRING 
|| \
+       etype == ASN1_ETYPE_OCTET_STRING)?1:0)
+
+extern unsigned int _asn1_tags_size;
+extern const tag_and_class_st _asn1_tags[];
+
+# define _asn1_strlen(s) strlen((const char *) s)
+# define _asn1_strtol(n,e,b) strtol((const char *) n, e, b)
+# define _asn1_strtoul(n,e,b) strtoul((const char *) n, e, b)
+# define _asn1_strcmp(a,b) strcmp((const char *)a, (const char *)b)
+# define _asn1_strcpy(a,b) strcpy((char *)a, (const char *)b)
+# define _asn1_strcat(a,b) strcat((char *)a, (const char *)b)
+
+# if SIZEOF_UNSIGNED_LONG_INT == 8
+#  define _asn1_strtou64(n,e,b) strtoul((const char *) n, e, b)
+# else
+#  define _asn1_strtou64(n,e,b) strtoull((const char *) n, e, b)
+# endif
+
+# define MAX_LOG_SIZE 1024     /* maximum number of characters of a log 
message */
+
+/* Define used for visiting trees. */
+# define UP     1
+# define RIGHT  2
+# define DOWN   3
+
+/***********************************************************************/
+/* List of constants to better specify the type of typedef asn1_node_st.   */
+/***********************************************************************/
+/*  Used with TYPE_TAG  */
+# define CONST_UNIVERSAL   (1U<<8)
+# define CONST_PRIVATE     (1U<<9)
+# define CONST_APPLICATION (1U<<10)
+# define CONST_EXPLICIT    (1U<<11)
+# define CONST_IMPLICIT    (1U<<12)
+
+# define CONST_TAG         (1U<<13)    /*  Used in ASN.1 assignement  */
+# define CONST_OPTION      (1U<<14)
+# define CONST_DEFAULT     (1U<<15)
+# define CONST_TRUE        (1U<<16)
+# define CONST_FALSE       (1U<<17)
+
+# define CONST_LIST        (1U<<18)    /*  Used with TYPE_INTEGER and 
TYPE_BIT_STRING  */
+# define CONST_MIN_MAX     (1U<<19)
+
+# define CONST_1_PARAM     (1U<<20)
+
+# define CONST_SIZE        (1U<<21)
+
+# define CONST_DEFINED_BY  (1U<<22)
+
+/* Those two are deprecated and used for backwards compatibility */
+# define CONST_GENERALIZED (1U<<23)
+# define CONST_UTC         (1U<<24)
+
+/* #define CONST_IMPORTS     (1U<<25) */
+
+# define CONST_NOT_USED    (1U<<26)
+# define CONST_SET         (1U<<27)
+# define CONST_ASSIGN      (1U<<28)
+
+# define CONST_DOWN        (1U<<29)
+# define CONST_RIGHT       (1U<<30)
+
+
+# define ASN1_ETYPE_TIME 17
+/****************************************/
+/* Returns the first 8 bits.            */
+/* Used with the field type of asn1_node_st */
+/****************************************/
+inline static unsigned int
+type_field (unsigned int ntype)
+{
+  return (ntype & 0xff);
+}
+
+/* To convert old types from a static structure */
+inline static unsigned int
+convert_old_type (unsigned int ntype)
+{
+  unsigned int type = ntype & 0xff;
+  if (type == ASN1_ETYPE_TIME)
+    {
+      if (ntype & CONST_UTC)
+       type = ASN1_ETYPE_UTC_TIME;
+      else
+       type = ASN1_ETYPE_GENERALIZED_TIME;
+
+      ntype &= ~(CONST_UTC | CONST_GENERALIZED);
+      ntype &= 0xffffff00;
+      ntype |= type;
+
+      return ntype;
+    }
+  else
+    return ntype;
+}
+
+static inline void *
+_asn1_realloc (void *ptr, size_t size)
+{
+  void *ret;
+
+  if (size == 0)
+    return ptr;
+
+  ret = realloc (ptr, size);
+  if (ret == NULL)
+    {
+      free (ptr);
+    }
+  return ret;
+}
+
+#endif /* INT_H */
diff --git a/grub-core/lib/libtasn1/lib/parser_aux.c 
b/grub-core/lib/libtasn1/lib/parser_aux.c
new file mode 100644
index 000000000..c05bd2339
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/parser_aux.c
@@ -0,0 +1,1178 @@
+/*
+ * Copyright (C) 2000-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#include <limits.h>            /* WORD_BIT */
+
+#include "int.h"
+#include "parser_aux.h"
+#include "gstr.h"
+#include "structure.h"
+#include "element.h"
+#include "c-ctype.h"
+
+char _asn1_identifierMissing[ASN1_MAX_NAME_SIZE + 1];  /* identifier name not 
found */
+
+/* Return a hash of the N bytes of X using the method described by
+   Bruno Haible in https://www.haible.de/bruno/hashfunc.html.
+   Note that while many hash functions reduce their result via modulo
+   to a 0..table_size-1 range, this function does not do that.
+
+   This implementation has been changed from size_t -> unsigned int. */
+
+#ifdef __clang__
+__attribute__((no_sanitize ("integer")))
+#endif
+     _GL_ATTRIBUTE_PURE static unsigned int _asn1_hash_name (const char *x)
+{
+  const unsigned char *s = (unsigned char *) x;
+  unsigned h = 0;
+
+  while (*s)
+    h = (*s++) + ((h << 9) | (h >> (WORD_BIT - 9)));
+
+  return h;
+}
+
+/******************************************************/
+/* Function : _asn1_add_static_node                   */
+/* Description: creates a new NODE_ASN element and    */
+/* puts it in the list pointed by e_list.       */
+/* Parameters:                                        */
+/*   e_list: of type list_type; must be NULL initially */
+/*   type: type of the new element (see ASN1_ETYPE_   */
+/*         and CONST_ constants).                     */
+/* Return: pointer to the new element.                */
+/******************************************************/
+asn1_node
+_asn1_add_static_node (list_type ** e_list, unsigned int type)
+{
+  list_type *p;
+  asn1_node punt;
+
+  punt = calloc (1, sizeof (struct asn1_node_st));
+  if (punt == NULL)
+    return NULL;
+
+  p = malloc (sizeof (list_type));
+  if (p == NULL)
+    {
+      free (punt);
+      return NULL;
+    }
+
+  p->node = punt;
+  p->next = *e_list;
+  *e_list = p;
+
+  punt->type = type;
+
+  return punt;
+}
+
+static int
+_asn1_add_static_node2 (list_type ** e_list, asn1_node node)
+{
+  list_type *p;
+
+  p = malloc (sizeof (list_type));
+  if (p == NULL)
+    {
+      return -1;
+    }
+
+  p->node = node;
+  p->next = *e_list;
+  *e_list = p;
+
+  return 0;
+}
+
+/**
+ * asn1_find_node:
+ * @pointer: NODE_ASN element pointer.
+ * @name: null terminated string with the element's name to find.
+ *
+ * Searches for an element called @name starting from @pointer.  The
+ * name is composed by different identifiers separated by dots.  When
+ * *@pointer has a name, the first identifier must be the name of
+ * *@pointer, otherwise it must be the name of one child of *@pointer.
+ *
+ * Returns: the search result, or %NULL if not found.
+ **/
+asn1_node
+asn1_find_node (asn1_node_const pointer, const char *name)
+{
+  asn1_node_const p;
+  char *n_end, n[ASN1_MAX_NAME_SIZE + 1];
+  const char *n_start;
+  unsigned int nsize;
+  unsigned int nhash;
+
+  if (pointer == NULL)
+    return NULL;
+
+  if (name == NULL)
+    return NULL;
+
+  p = pointer;
+  n_start = name;
+
+  if (name[0] == '?' && name[1] == 'C' && p->name[0] == '?')
+    {                          /* ?CURRENT */
+      n_start = strchr (n_start, '.');
+      if (n_start)
+       n_start++;
+    }
+  else if (p->name[0] != 0)
+    {                          /* has *pointer got a name ? */
+      n_end = strchr (n_start, '.');   /* search the first dot */
+      if (n_end)
+       {
+         nsize = n_end - n_start;
+         if (nsize >= sizeof (n))
+           return NULL;
+
+         memcpy (n, n_start, nsize);
+         n[nsize] = 0;
+         n_start = n_end;
+         n_start++;
+
+         nhash = _asn1_hash_name (n);
+       }
+      else
+       {
+         _asn1_str_cpy (n, sizeof (n), n_start);
+         nhash = _asn1_hash_name (n);
+
+         n_start = NULL;
+       }
+
+      while (p)
+       {
+         if (nhash == p->name_hash && (!strcmp (p->name, n)))
+           break;
+         else
+           p = p->right;
+       }                       /* while */
+
+      if (p == NULL)
+       return NULL;
+    }
+  else
+    {                          /* *pointer doesn't have a name */
+      if (n_start[0] == 0)
+       return (asn1_node) p;
+    }
+
+  while (n_start)
+    {                          /* Has the end of NAME been reached? */
+      n_end = strchr (n_start, '.');   /* search the next dot */
+      if (n_end)
+       {
+         nsize = n_end - n_start;
+         if (nsize >= sizeof (n))
+           return NULL;
+
+         memcpy (n, n_start, nsize);
+         n[nsize] = 0;
+         n_start = n_end;
+         n_start++;
+
+         nhash = _asn1_hash_name (n);
+       }
+      else
+       {
+         _asn1_str_cpy (n, sizeof (n), n_start);
+         nhash = _asn1_hash_name (n);
+         n_start = NULL;
+       }
+
+      if (p->down == NULL)
+       return NULL;
+
+      p = p->down;
+      if (p == NULL)
+       return NULL;
+
+      /* The identifier "?LAST" indicates the last element
+         in the right chain. */
+      if (n[0] == '?' && n[1] == 'L')  /* ?LAST */
+       {
+         while (p->right)
+           p = p->right;
+       }
+      else
+       {                       /* no "?LAST" */
+         while (p)
+           {
+             if (p->name_hash == nhash && !strcmp (p->name, n))
+               break;
+             else
+               p = p->right;
+           }
+       }
+      if (p == NULL)
+       return NULL;
+    }                          /* while */
+
+  return (asn1_node) p;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_set_value                                     */
+/* Description: sets the field VALUE in a NODE_ASN element. The   */
+/*              previous value (if exist) will be lost            */
+/* Parameters:                                                    */
+/*   node: element pointer.                                       */
+/*   value: pointer to the value that you want to set.            */
+/*   len: character number of value.                              */
+/* Return: pointer to the NODE_ASN element.                       */
+/******************************************************************/
+asn1_node
+_asn1_set_value (asn1_node node, const void *value, unsigned int len)
+{
+  if (node == NULL)
+    return node;
+  if (node->value)
+    {
+      if (node->value != node->small_value)
+       free (node->value);
+      node->value = NULL;
+      node->value_len = 0;
+    }
+
+  if (!len)
+    return node;
+
+  if (len < sizeof (node->small_value))
+    {
+      node->value = node->small_value;
+    }
+  else
+    {
+      node->value = malloc (len);
+      if (node->value == NULL)
+       return NULL;
+    }
+  node->value_len = len;
+
+  memcpy (node->value, value, len);
+  return node;
+}
+
+/******************************************************************/
+/* Function : _asn1_set_value_lv                                  */
+/* Description: sets the field VALUE in a NODE_ASN element. The   */
+/*              previous value (if exist) will be lost. The value */
+/*             given is stored as an length-value format (LV     */
+/* Parameters:                                                    */
+/*   node: element pointer.                                       */
+/*   value: pointer to the value that you want to set.            */
+/*   len: character number of value.                              */
+/* Return: pointer to the NODE_ASN element.                       */
+/******************************************************************/
+asn1_node
+_asn1_set_value_lv (asn1_node node, const void *value, unsigned int len)
+{
+  int len2;
+  void *temp;
+
+  if (node == NULL)
+    return node;
+
+  asn1_length_der (len, NULL, &len2);
+  temp = malloc (len + len2);
+  if (temp == NULL)
+    return NULL;
+
+  asn1_octet_der (value, len, temp, &len2);
+  return _asn1_set_value_m (node, temp, len2);
+}
+
+/* the same as _asn1_set_value except that it sets an already malloc'ed
+ * value.
+ */
+asn1_node
+_asn1_set_value_m (asn1_node node, void *value, unsigned int len)
+{
+  if (node == NULL)
+    return node;
+
+  if (node->value)
+    {
+      if (node->value != node->small_value)
+       free (node->value);
+      node->value = NULL;
+      node->value_len = 0;
+    }
+
+  if (!len)
+    return node;
+
+  node->value = value;
+  node->value_len = len;
+
+  return node;
+}
+
+/******************************************************************/
+/* Function : _asn1_append_value                                  */
+/* Description: appends to the field VALUE in a NODE_ASN element. */
+/*                                                               */
+/* Parameters:                                                    */
+/*   node: element pointer.                                       */
+/*   value: pointer to the value that you want to be appended.    */
+/*   len: character number of value.                              */
+/* Return: pointer to the NODE_ASN element.                       */
+/******************************************************************/
+asn1_node
+_asn1_append_value (asn1_node node, const void *value, unsigned int len)
+{
+  if (node == NULL)
+    return node;
+
+  if (node->value == NULL)
+    return _asn1_set_value (node, value, len);
+
+  if (len == 0)
+    return node;
+
+  if (node->value == node->small_value)
+    {
+      /* value is in node */
+      int prev_len = node->value_len;
+      node->value_len += len;
+      node->value = malloc (node->value_len);
+      if (node->value == NULL)
+       {
+         node->value_len = 0;
+         return NULL;
+       }
+
+      if (prev_len > 0)
+       memcpy (node->value, node->small_value, prev_len);
+
+      memcpy (&node->value[prev_len], value, len);
+
+      return node;
+    }
+  else                         /* if (node->value != NULL && node->value != 
node->small_value) */
+    {
+      /* value is allocated */
+      int prev_len = node->value_len;
+      node->value_len += len;
+
+      node->value = _asn1_realloc (node->value, node->value_len);
+      if (node->value == NULL)
+       {
+         node->value_len = 0;
+         return NULL;
+       }
+
+      memcpy (&node->value[prev_len], value, len);
+
+      return node;
+    }
+}
+
+/******************************************************************/
+/* Function : _asn1_set_name                                      */
+/* Description: sets the field NAME in a NODE_ASN element. The    */
+/*              previous value (if exist) will be lost            */
+/* Parameters:                                                    */
+/*   node: element pointer.                                       */
+/*   name: a null terminated string with the name that you want   */
+/*         to set.                                                */
+/* Return: pointer to the NODE_ASN element.                       */
+/******************************************************************/
+asn1_node
+_asn1_set_name (asn1_node node, const char *name)
+{
+  if (node == NULL)
+    return node;
+
+  _asn1_str_cpy (node->name, sizeof (node->name), name ? name : "");
+  node->name_hash = _asn1_hash_name (node->name);
+
+  return node;
+}
+
+/******************************************************************/
+/* Function : _asn1_cpy_name                                      */
+/* Description: copies the field NAME in a NODE_ASN element.      */
+/* Parameters:                                                    */
+/*   dst: a dest element pointer.                                 */
+/*   src: a source element pointer.                               */
+/* Return: pointer to the NODE_ASN element.                       */
+/******************************************************************/
+asn1_node
+_asn1_cpy_name (asn1_node dst, asn1_node_const src)
+{
+  if (dst == NULL)
+    return dst;
+
+  if (src == NULL)
+    {
+      dst->name[0] = 0;
+      dst->name_hash = _asn1_hash_name (dst->name);
+      return dst;
+    }
+
+  _asn1_str_cpy (dst->name, sizeof (dst->name), src->name);
+  dst->name_hash = src->name_hash;
+
+  return dst;
+}
+
+/******************************************************************/
+/* Function : _asn1_set_right                                     */
+/* Description: sets the field RIGHT in a NODE_ASN element.       */
+/* Parameters:                                                    */
+/*   node: element pointer.                                       */
+/*   right: pointer to a NODE_ASN element that you want be pointed*/
+/*          by NODE.                                              */
+/* Return: pointer to *NODE.                                      */
+/******************************************************************/
+asn1_node
+_asn1_set_right (asn1_node node, asn1_node right)
+{
+  if (node == NULL)
+    return node;
+  node->right = right;
+  if (right)
+    right->left = node;
+  return node;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_get_last_right                                */
+/* Description: return the last element along the right chain.    */
+/* Parameters:                                                    */
+/*   node: starting element pointer.                              */
+/* Return: pointer to the last element along the right chain.     */
+/******************************************************************/
+asn1_node
+_asn1_get_last_right (asn1_node_const node)
+{
+  asn1_node_const p;
+
+  if (node == NULL)
+    return NULL;
+  p = node;
+  while (p->right)
+    p = p->right;
+  return (asn1_node) p;
+}
+
+/******************************************************************/
+/* Function : _asn1_remove_node                                   */
+/* Description: gets free the memory allocated for an NODE_ASN    */
+/*              element (not the elements pointed by it).         */
+/* Parameters:                                                    */
+/*   node: NODE_ASN element pointer.                              */
+/*   flags: ASN1_DELETE_FLAG_*                                    */
+/******************************************************************/
+void
+_asn1_remove_node (asn1_node node, unsigned int flags)
+{
+  if (node == NULL)
+    return;
+
+  if (node->value != NULL)
+    {
+      if (flags & ASN1_DELETE_FLAG_ZEROIZE)
+       {
+         safe_memset (node->value, 0, node->value_len);
+       }
+
+      if (node->value != node->small_value)
+       free (node->value);
+    }
+  free (node);
+}
+
+/******************************************************************/
+/* Function : _asn1_find_up                                       */
+/* Description: return the father of the NODE_ASN element.        */
+/* Parameters:                                                    */
+/*   node: NODE_ASN element pointer.                              */
+/* Return: Null if not found.                                     */
+/******************************************************************/
+asn1_node
+_asn1_find_up (asn1_node_const node)
+{
+  asn1_node_const p;
+
+  if (node == NULL)
+    return NULL;
+
+  p = node;
+
+  while ((p->left != NULL) && (p->left->right == p))
+    p = p->left;
+
+  return p->left;
+}
+
+static unsigned
+_asn1_is_up (asn1_node_const up_cand, asn1_node_const down)
+{
+  asn1_node_const d, u;
+
+  if (up_cand == NULL || down == NULL)
+    return 0;
+
+  d = down;
+
+  while ((u = _asn1_find_up (d)) != NULL && u != d)
+    {
+      if (u == up_cand)
+       return 1;
+      d = u;
+    }
+
+  return 0;
+}
+
+/******************************************************************/
+/* Function : _asn1_delete_node_from_list                         */
+/* Description: deletes the list element given                    */
+/******************************************************************/
+void
+_asn1_delete_node_from_list (list_type * list, asn1_node node)
+{
+  list_type *p = list;
+
+  while (p)
+    {
+      if (p->node == node)
+       p->node = NULL;
+      p = p->next;
+    }
+}
+
+/******************************************************************/
+/* Function : _asn1_delete_list                                   */
+/* Description: deletes the list elements (not the elements       */
+/*  pointed by them).                                             */
+/******************************************************************/
+void
+_asn1_delete_list (list_type * e_list)
+{
+  list_type *p;
+
+  while (e_list)
+    {
+      p = e_list;
+      e_list = e_list->next;
+      free (p);
+    }
+}
+
+/******************************************************************/
+/* Function : _asn1_delete_list_and nodes                         */
+/* Description: deletes the list elements and the elements        */
+/*  pointed by them.                                              */
+/******************************************************************/
+void
+_asn1_delete_list_and_nodes (list_type * e_list)
+{
+  list_type *p;
+
+  while (e_list)
+    {
+      p = e_list;
+      e_list = e_list->next;
+      _asn1_remove_node (p->node, 0);
+      free (p);
+    }
+}
+
+
+char *
+_asn1_ltostr (int64_t v, char str[LTOSTR_MAX_SIZE])
+{
+  uint64_t d, r;
+  char temp[LTOSTR_MAX_SIZE];
+  int count, k, start;
+  uint64_t val;
+
+  if (v < 0)
+    {
+      str[0] = '-';
+      start = 1;
+      val = -((uint64_t) v);
+    }
+  else
+    {
+      val = v;
+      start = 0;
+    }
+
+  count = 0;
+  do
+    {
+      d = val / 10;
+      r = val - d * 10;
+      temp[start + count] = '0' + (char) r;
+      count++;
+      val = d;
+    }
+  while (val && ((start + count) < LTOSTR_MAX_SIZE - 1));
+
+  for (k = 0; k < count; k++)
+    str[k + start] = temp[start + count - k - 1];
+  str[count + start] = 0;
+  return str;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_change_integer_value                          */
+/* Description: converts into DER coding the value assign to an   */
+/*   INTEGER constant.                                            */
+/* Parameters:                                                    */
+/*   node: root of an ASN1element.                                */
+/* Return:                                                        */
+/*   ASN1_ELEMENT_NOT_FOUND if NODE is NULL,                       */
+/*   otherwise ASN1_SUCCESS                                             */
+/******************************************************************/
+int
+_asn1_change_integer_value (asn1_node node)
+{
+  asn1_node p;
+  unsigned char val[SIZEOF_UNSIGNED_LONG_INT];
+  unsigned char val2[SIZEOF_UNSIGNED_LONG_INT + 1];
+  int len;
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = node;
+  while (p)
+    {
+      if ((type_field (p->type) == ASN1_ETYPE_INTEGER)
+         && (p->type & CONST_ASSIGN))
+       {
+         if (p->value)
+           {
+             _asn1_convert_integer (p->value, val, sizeof (val), &len);
+             asn1_octet_der (val, len, val2, &len);
+             _asn1_set_value (p, val2, len);
+           }
+       }
+
+      if (p->down)
+       {
+         p = p->down;
+       }
+      else
+       {
+         if (p == node)
+           p = NULL;
+         else if (p->right)
+           p = p->right;
+         else
+           {
+             while (1)
+               {
+                 p = _asn1_find_up (p);
+                 if (p == node)
+                   {
+                     p = NULL;
+                     break;
+                   }
+                 if (p && p->right)
+                   {
+                     p = p->right;
+                     break;
+                   }
+               }
+           }
+       }
+    }
+
+  return ASN1_SUCCESS;
+}
+
+#define MAX_CONSTANTS 1024
+/******************************************************************/
+/* Function : _asn1_expand_object_id                              */
+/* Description: expand the IDs of an OBJECT IDENTIFIER constant.  */
+/* Parameters:                                                    */
+/*   list: root of an object list                                 */
+/*   node: root of an ASN1 element.                               */
+/* Return:                                                        */
+/*   ASN1_ELEMENT_NOT_FOUND if NODE is NULL,                      */
+/*   otherwise ASN1_SUCCESS                                       */
+/******************************************************************/
+int
+_asn1_expand_object_id (list_type ** list, asn1_node node)
+{
+  asn1_node p, p2, p3, p4, p5;
+  char name_root[ASN1_MAX_NAME_SIZE], name2[2 * ASN1_MAX_NAME_SIZE + 1];
+  int move, tlen, tries;
+  unsigned max_constants;
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  _asn1_str_cpy (name_root, sizeof (name_root), node->name);
+
+  p = node;
+  move = DOWN;
+  tries = 0;
+
+  while (!((p == node) && (move == UP)))
+    {
+      if (move != UP)
+       {
+         if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID)
+             && (p->type & CONST_ASSIGN))
+           {
+             p2 = p->down;
+             if (p2 && (type_field (p2->type) == ASN1_ETYPE_CONSTANT))
+               {
+                 if (p2->value && !c_isdigit (p2->value[0]))
+                   {
+                     _asn1_str_cpy (name2, sizeof (name2), name_root);
+                     _asn1_str_cat (name2, sizeof (name2), ".");
+                     _asn1_str_cat (name2, sizeof (name2),
+                                    (char *) p2->value);
+                     p3 = asn1_find_node (node, name2);
+                     if (!p3 || _asn1_is_up (p2, p3) ||
+                         (type_field (p3->type) != ASN1_ETYPE_OBJECT_ID) ||
+                         !(p3->type & CONST_ASSIGN))
+                       return ASN1_ELEMENT_NOT_FOUND;
+
+                     _asn1_set_down (p, p2->right);
+                     if (p2->down)
+                       _asn1_delete_structure (*list, &p2->down, 0);
+                     _asn1_delete_node_from_list (*list, p2);
+                     _asn1_remove_node (p2, 0);
+                     p2 = p;
+                     p4 = p3->down;
+                     max_constants = 0;
+                     while (p4)
+                       {
+                         if (type_field (p4->type) == ASN1_ETYPE_CONSTANT)
+                           {
+                             max_constants++;
+                             if (max_constants == MAX_CONSTANTS)
+                               return ASN1_RECURSION;
+
+                             p5 =
+                               _asn1_add_single_node (ASN1_ETYPE_CONSTANT);
+                             _asn1_set_name (p5, p4->name);
+                             if (p4->value)
+                               {
+                                 tlen = _asn1_strlen (p4->value);
+                                 if (tlen > 0)
+                                   _asn1_set_value (p5, p4->value, tlen + 1);
+                               }
+                             _asn1_add_static_node2 (list, p5);
+
+                             if (p2 == p)
+                               {
+                                 _asn1_set_right (p5, p->down);
+                                 _asn1_set_down (p, p5);
+                               }
+                             else
+                               {
+                                 _asn1_set_right (p5, p2->right);
+                                 _asn1_set_right (p2, p5);
+                               }
+                             p2 = p5;
+                           }
+                         p4 = p4->right;
+                       }
+                     move = DOWN;
+
+                     tries++;
+                     if (tries >= EXPAND_OBJECT_ID_MAX_RECURSION)
+                       return ASN1_RECURSION;
+
+                     continue;
+                   }
+               }
+           }
+         move = DOWN;
+       }
+      else
+       move = RIGHT;
+
+      tries = 0;
+      if (move == DOWN)
+       {
+         if (p->down)
+           p = p->down;
+         else
+           move = RIGHT;
+       }
+
+      if (p == node)
+       {
+         move = UP;
+         continue;
+       }
+
+      if (move == RIGHT)
+       {
+         if (p && p->right)
+           p = p->right;
+         else
+           move = UP;
+       }
+      if (move == UP)
+       p = _asn1_find_up (p);
+    }
+
+  /*******************************/
+  /*       expand DEFAULT        */
+  /*******************************/
+  p = node;
+  move = DOWN;
+
+  while (!((p == node) && (move == UP)))
+    {
+      if (move != UP)
+       {
+         if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID) &&
+             (p->type & CONST_DEFAULT))
+           {
+             p2 = p->down;
+             if (p2 && (type_field (p2->type) == ASN1_ETYPE_DEFAULT))
+               {
+                 _asn1_str_cpy (name2, sizeof (name2), name_root);
+                 _asn1_str_cat (name2, sizeof (name2), ".");
+                 if (p2->value)
+                   _asn1_str_cat (name2, sizeof (name2), (char *) p2->value);
+                 p3 = asn1_find_node (node, name2);
+                 if (!p3 || (type_field (p3->type) != ASN1_ETYPE_OBJECT_ID)
+                     || !(p3->type & CONST_ASSIGN))
+                   return ASN1_ELEMENT_NOT_FOUND;
+                 p4 = p3->down;
+                 name2[0] = 0;
+                 while (p4)
+                   {
+                     if (type_field (p4->type) == ASN1_ETYPE_CONSTANT)
+                       {
+                         if (p4->value == NULL)
+                           return ASN1_VALUE_NOT_FOUND;
+
+                         if (name2[0])
+                           _asn1_str_cat (name2, sizeof (name2), ".");
+                         _asn1_str_cat (name2, sizeof (name2),
+                                        (char *) p4->value);
+                       }
+                     p4 = p4->right;
+                   }
+                 tlen = strlen (name2);
+                 if (tlen > 0)
+                   _asn1_set_value (p2, name2, tlen + 1);
+               }
+           }
+         move = DOWN;
+       }
+      else
+       move = RIGHT;
+
+      if (move == DOWN)
+       {
+         if (p->down)
+           p = p->down;
+         else
+           move = RIGHT;
+       }
+
+      if (p == node)
+       {
+         move = UP;
+         continue;
+       }
+
+      if (move == RIGHT)
+       {
+         if (p && p->right)
+           p = p->right;
+         else
+           move = UP;
+       }
+      if (move == UP)
+       p = _asn1_find_up (p);
+    }
+
+  return ASN1_SUCCESS;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_type_set_config                               */
+/* Description: sets the CONST_SET and CONST_NOT_USED properties  */
+/*   in the fields of the SET elements.                           */
+/* Parameters:                                                    */
+/*   node: root of an ASN1 element.                               */
+/* Return:                                                        */
+/*   ASN1_ELEMENT_NOT_FOUND if NODE is NULL,                       */
+/*   otherwise ASN1_SUCCESS                                             */
+/******************************************************************/
+int
+_asn1_type_set_config (asn1_node node)
+{
+  asn1_node p, p2;
+  int move;
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = node;
+  move = DOWN;
+
+  while (!((p == node) && (move == UP)))
+    {
+      if (move != UP)
+       {
+         if (type_field (p->type) == ASN1_ETYPE_SET)
+           {
+             p2 = p->down;
+             while (p2)
+               {
+                 if (type_field (p2->type) != ASN1_ETYPE_TAG)
+                   p2->type |= CONST_SET | CONST_NOT_USED;
+                 p2 = p2->right;
+               }
+           }
+         move = DOWN;
+       }
+      else
+       move = RIGHT;
+
+      if (move == DOWN)
+       {
+         if (p->down)
+           p = p->down;
+         else
+           move = RIGHT;
+       }
+
+      if (p == node)
+       {
+         move = UP;
+         continue;
+       }
+
+      if (move == RIGHT)
+       {
+         if (p && p->right)
+           p = p->right;
+         else
+           move = UP;
+       }
+      if (move == UP)
+       p = _asn1_find_up (p);
+    }
+
+  return ASN1_SUCCESS;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_check_identifier                              */
+/* Description: checks the definitions of all the identifiers     */
+/*   and the first element of an OBJECT_ID (e.g. {pkix 0 4}).     */
+/*   The _asn1_identifierMissing global variable is filled if     */
+/*   necessary.                                                   */
+/* Parameters:                                                    */
+/*   node: root of an ASN1 element.                               */
+/* Return:                                                        */
+/*   ASN1_ELEMENT_NOT_FOUND      if NODE is NULL,                 */
+/*   ASN1_IDENTIFIER_NOT_FOUND   if an identifier is not defined, */
+/*   otherwise ASN1_SUCCESS                                       */
+/******************************************************************/
+int
+_asn1_check_identifier (asn1_node_const node)
+{
+  asn1_node_const p, p2;
+  char name2[ASN1_MAX_NAME_SIZE * 2 + 2];
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = node;
+  while (p)
+    {
+      if (p->value && type_field (p->type) == ASN1_ETYPE_IDENTIFIER)
+       {
+         _asn1_str_cpy (name2, sizeof (name2), node->name);
+         _asn1_str_cat (name2, sizeof (name2), ".");
+         _asn1_str_cat (name2, sizeof (name2), (char *) p->value);
+         p2 = asn1_find_node (node, name2);
+         if (p2 == NULL)
+           {
+             if (p->value)
+               _asn1_str_cpy (_asn1_identifierMissing,
+                              sizeof (_asn1_identifierMissing),
+                              (char *) p->value);
+             else
+               _asn1_strcpy (_asn1_identifierMissing, "(null)");
+             return ASN1_IDENTIFIER_NOT_FOUND;
+           }
+       }
+      else if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID) &&
+              (p->type & CONST_DEFAULT))
+       {
+         p2 = p->down;
+         if (p2 && (type_field (p2->type) == ASN1_ETYPE_DEFAULT))
+           {
+             _asn1_str_cpy (name2, sizeof (name2), node->name);
+             if (p2->value)
+               {
+                 _asn1_str_cat (name2, sizeof (name2), ".");
+                 _asn1_str_cat (name2, sizeof (name2), (char *) p2->value);
+                 _asn1_str_cpy (_asn1_identifierMissing,
+                                sizeof (_asn1_identifierMissing),
+                                (char *) p2->value);
+               }
+             else
+               _asn1_strcpy (_asn1_identifierMissing, "(null)");
+
+             p2 = asn1_find_node (node, name2);
+             if (!p2 || (type_field (p2->type) != ASN1_ETYPE_OBJECT_ID) ||
+                 !(p2->type & CONST_ASSIGN))
+               return ASN1_IDENTIFIER_NOT_FOUND;
+             else
+               _asn1_identifierMissing[0] = 0;
+           }
+       }
+      else if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID) &&
+              (p->type & CONST_ASSIGN))
+       {
+         p2 = p->down;
+         if (p2 && (type_field (p2->type) == ASN1_ETYPE_CONSTANT))
+           {
+             if (p2->value && !c_isdigit (p2->value[0]))
+               {
+                 _asn1_str_cpy (name2, sizeof (name2), node->name);
+                 _asn1_str_cat (name2, sizeof (name2), ".");
+                 _asn1_str_cat (name2, sizeof (name2), (char *) p2->value);
+                 _asn1_str_cpy (_asn1_identifierMissing,
+                                sizeof (_asn1_identifierMissing),
+                                (char *) p2->value);
+
+                 p2 = asn1_find_node (node, name2);
+                 if (!p2 || (type_field (p2->type) != ASN1_ETYPE_OBJECT_ID)
+                     || !(p2->type & CONST_ASSIGN))
+                   return ASN1_IDENTIFIER_NOT_FOUND;
+                 else
+                   _asn1_identifierMissing[0] = 0;
+               }
+           }
+       }
+
+      if (p->down)
+       {
+         p = p->down;
+       }
+      else if (p->right)
+       p = p->right;
+      else
+       {
+         while (p)
+           {
+             p = _asn1_find_up (p);
+             if (p == node)
+               {
+                 p = NULL;
+                 break;
+               }
+             if (p && p->right)
+               {
+                 p = p->right;
+                 break;
+               }
+           }
+       }
+    }
+
+  return ASN1_SUCCESS;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_set_default_tag                               */
+/* Description: sets the default IMPLICIT or EXPLICIT property in */
+/*   the tagged elements that don't have this declaration.        */
+/* Parameters:                                                    */
+/*   node: pointer to a DEFINITIONS element.                      */
+/* Return:                                                        */
+/*   ASN1_ELEMENT_NOT_FOUND if NODE is NULL or not a pointer to   */
+/*     a DEFINITIONS element,                                     */
+/*   otherwise ASN1_SUCCESS                                       */
+/******************************************************************/
+int
+_asn1_set_default_tag (asn1_node node)
+{
+  asn1_node p;
+
+  if ((node == NULL) || (type_field (node->type) != ASN1_ETYPE_DEFINITIONS))
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = node;
+  while (p)
+    {
+      if ((type_field (p->type) == ASN1_ETYPE_TAG) &&
+         !(p->type & CONST_EXPLICIT) && !(p->type & CONST_IMPLICIT))
+       {
+         if (node->type & CONST_EXPLICIT)
+           p->type |= CONST_EXPLICIT;
+         else
+           p->type |= CONST_IMPLICIT;
+       }
+
+      if (p->down)
+       {
+         p = p->down;
+       }
+      else if (p->right)
+       p = p->right;
+      else
+       {
+         while (1)
+           {
+             p = _asn1_find_up (p);
+             if (p == node)
+               {
+                 p = NULL;
+                 break;
+               }
+             if (p && p->right)
+               {
+                 p = p->right;
+                 break;
+               }
+           }
+       }
+    }
+
+  return ASN1_SUCCESS;
+}
diff --git a/grub-core/lib/libtasn1/lib/parser_aux.h 
b/grub-core/lib/libtasn1/lib/parser_aux.h
new file mode 100644
index 000000000..3eac1fa30
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/parser_aux.h
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2000-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#ifndef _PARSER_AUX_H
+# define _PARSER_AUX_H
+
+/***********************************************/
+/* Type: list_type                             */
+/* Description: type used in the list during   */
+/* the structure creation.                     */
+/***********************************************/
+typedef struct list_struct
+{
+  asn1_node node;
+  struct list_struct *next;
+} list_type;
+
+/***************************************/
+/*  Functions used by ASN.1 parser     */
+/***************************************/
+asn1_node _asn1_add_static_node (list_type ** e_list, unsigned int type);
+
+void _asn1_delete_list (list_type * e_list);
+
+void _asn1_delete_list_and_nodes (list_type * e_list);
+
+void _asn1_delete_node_from_list (list_type * list, asn1_node node);
+
+asn1_node
+_asn1_set_value (asn1_node node, const void *value, unsigned int len);
+
+asn1_node _asn1_set_value_m (asn1_node node, void *value, unsigned int len);
+
+asn1_node
+_asn1_set_value_lv (asn1_node node, const void *value, unsigned int len);
+
+asn1_node
+_asn1_append_value (asn1_node node, const void *value, unsigned int len);
+
+asn1_node _asn1_set_name (asn1_node node, const char *name);
+
+asn1_node _asn1_cpy_name (asn1_node dst, asn1_node_const src);
+
+asn1_node _asn1_set_right (asn1_node node, asn1_node right);
+
+asn1_node _asn1_get_last_right (asn1_node_const node);
+
+void _asn1_remove_node (asn1_node node, unsigned int flags);
+
+/* Max 64-bit integer length is 20 chars + 1 for sign + 1 for null termination 
*/
+# define LTOSTR_MAX_SIZE 22
+char *_asn1_ltostr (int64_t v, char str[LTOSTR_MAX_SIZE]);
+
+asn1_node _asn1_find_up (asn1_node_const node);
+
+int _asn1_change_integer_value (asn1_node node);
+
+# define EXPAND_OBJECT_ID_MAX_RECURSION 16
+int _asn1_expand_object_id (list_type ** list, asn1_node node);
+
+int _asn1_type_set_config (asn1_node node);
+
+int _asn1_check_identifier (asn1_node_const node);
+
+int _asn1_set_default_tag (asn1_node node);
+
+/******************************************************************/
+/* Function : _asn1_get_right                                     */
+/* Description: returns the element pointed by the RIGHT field of */
+/*              a NODE_ASN element.                               */
+/* Parameters:                                                    */
+/*   node: NODE_ASN element pointer.                              */
+/* Return: field RIGHT of NODE.                                   */
+/******************************************************************/
+inline static asn1_node
+_asn1_get_right (asn1_node_const node)
+{
+  if (node == NULL)
+    return NULL;
+  return node->right;
+}
+
+/******************************************************************/
+/* Function : _asn1_set_down                                      */
+/* Description: sets the field DOWN in a NODE_ASN element.        */
+/* Parameters:                                                    */
+/*   node: element pointer.                                       */
+/*   down: pointer to a NODE_ASN element that you want be pointed */
+/*          by NODE.                                              */
+/* Return: pointer to *NODE.                                      */
+/******************************************************************/
+inline static asn1_node
+_asn1_set_down (asn1_node node, asn1_node down)
+{
+  if (node == NULL)
+    return node;
+  node->down = down;
+  if (down)
+    down->left = node;
+  return node;
+}
+
+/******************************************************************/
+/* Function : _asn1_get_down                                      */
+/* Description: returns the element pointed by the DOWN field of  */
+/*              a NODE_ASN element.                               */
+/* Parameters:                                                    */
+/*   node: NODE_ASN element pointer.                              */
+/* Return: field DOWN of NODE.                                    */
+/******************************************************************/
+inline static asn1_node
+_asn1_get_down (asn1_node_const node)
+{
+  if (node == NULL)
+    return NULL;
+  return node->down;
+}
+
+/******************************************************************/
+/* Function : _asn1_get_name                                      */
+/* Description: returns the name of a NODE_ASN element.           */
+/* Parameters:                                                    */
+/*   node: NODE_ASN element pointer.                              */
+/* Return: a null terminated string.                              */
+/******************************************************************/
+inline static char *
+_asn1_get_name (asn1_node_const node)
+{
+  if (node == NULL)
+    return NULL;
+  return (char *) node->name;
+}
+
+/******************************************************************/
+/* Function : _asn1_mod_type                                      */
+/* Description: change the field TYPE of an NODE_ASN element.     */
+/*              The new value is the old one | (bitwise or) the   */
+/*              paramener VALUE.                                  */
+/* Parameters:                                                    */
+/*   node: NODE_ASN element pointer.                              */
+/*   value: the integer value that must be or-ed with the current */
+/*          value of field TYPE.                                  */
+/* Return: NODE pointer.                                          */
+/******************************************************************/
+inline static asn1_node
+_asn1_mod_type (asn1_node node, unsigned int value)
+{
+  if (node == NULL)
+    return node;
+  node->type |= value;
+  return node;
+}
+
+#endif
diff --git a/grub-core/lib/libtasn1/lib/structure.c 
b/grub-core/lib/libtasn1/lib/structure.c
new file mode 100644
index 000000000..512dd601f
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/structure.c
@@ -0,0 +1,1225 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+
+/*****************************************************/
+/* File: structure.c                                 */
+/* Description: Functions to create and delete an    */
+/*  ASN1 tree.                                       */
+/*****************************************************/
+
+
+#include <int.h>
+#include <structure.h>
+#include "parser_aux.h"
+#include <gstr.h>
+
+
+extern char _asn1_identifierMissing[];
+
+
+/******************************************************/
+/* Function : _asn1_add_single_node                     */
+/* Description: creates a new NODE_ASN element.       */
+/* Parameters:                                        */
+/*   type: type of the new element (see ASN1_ETYPE_         */
+/*         and CONST_ constants).                     */
+/* Return: pointer to the new element.                */
+/******************************************************/
+asn1_node
+_asn1_add_single_node (unsigned int type)
+{
+  asn1_node punt;
+
+  punt = calloc (1, sizeof (struct asn1_node_st));
+  if (punt == NULL)
+    return NULL;
+
+  punt->type = type;
+
+  return punt;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_find_left                                     */
+/* Description: returns the NODE_ASN element with RIGHT field that*/
+/*              points the element NODE.                          */
+/* Parameters:                                                    */
+/*   node: NODE_ASN element pointer.                              */
+/* Return: NULL if not found.                                     */
+/******************************************************************/
+asn1_node
+_asn1_find_left (asn1_node_const node)
+{
+  if ((node == NULL) || (node->left == NULL) || (node->left->down == node))
+    return NULL;
+
+  return node->left;
+}
+
+
+int
+_asn1_create_static_structure (asn1_node_const pointer,
+                              char *output_file_name, char *vector_name)
+{
+  FILE *file;
+  asn1_node_const p;
+  unsigned long t;
+
+  file = fopen (output_file_name, "w");
+
+  if (file == NULL)
+    return ASN1_FILE_NOT_FOUND;
+
+  fprintf (file, "#if HAVE_CONFIG_H\n");
+  fprintf (file, "# include \"config.h\"\n");
+  fprintf (file, "#endif\n\n");
+
+  fprintf (file, "#include <libtasn1.h>\n\n");
+
+  fprintf (file, "const asn1_static_node %s[] = {\n", vector_name);
+
+  p = pointer;
+
+  while (p)
+    {
+      fprintf (file, "  { ");
+
+      if (p->name[0] != 0)
+       fprintf (file, "\"%s\", ", p->name);
+      else
+       fprintf (file, "NULL, ");
+
+      t = p->type;
+      if (p->down)
+       t |= CONST_DOWN;
+      if (p->right)
+       t |= CONST_RIGHT;
+
+      fprintf (file, "%lu, ", t);
+
+      if (p->value)
+       fprintf (file, "\"%s\"},\n", p->value);
+      else
+       fprintf (file, "NULL },\n");
+
+      if (p->down)
+       {
+         p = p->down;
+       }
+      else if (p->right)
+       {
+         p = p->right;
+       }
+      else
+       {
+         while (1)
+           {
+             p = _asn1_find_up (p);
+             if (p == pointer)
+               {
+                 p = NULL;
+                 break;
+               }
+             if (p->right)
+               {
+                 p = p->right;
+                 break;
+               }
+           }
+       }
+    }
+
+  fprintf (file, "  { NULL, 0, NULL }\n};\n");
+
+  fclose (file);
+
+  return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_array2tree:
+ * @array: specify the array that contains ASN.1 declarations
+ * @definitions: return the pointer to the structure created by
+ *   *ARRAY ASN.1 declarations
+ * @errorDescription: return the error description.
+ *
+ * Creates the structures needed to manage the ASN.1 definitions.
+ * @array is a vector created by asn1_parser2array().
+ *
+ * Returns: %ASN1_SUCCESS if structure was created correctly,
+ *   %ASN1_ELEMENT_NOT_EMPTY if *@definitions not NULL,
+ *   %ASN1_IDENTIFIER_NOT_FOUND if in the file there is an identifier
+ *   that is not defined (see @errorDescription for more information),
+ *   %ASN1_ARRAY_ERROR if the array pointed by @array is wrong.
+ **/
+int
+asn1_array2tree (const asn1_static_node * array, asn1_node * definitions,
+                char *errorDescription)
+{
+  asn1_node p, p_last = NULL;
+  unsigned long k;
+  int move;
+  int result;
+  unsigned int type;
+  list_type *e_list = NULL;
+
+  if (errorDescription)
+    errorDescription[0] = 0;
+
+  if (*definitions != NULL)
+    return ASN1_ELEMENT_NOT_EMPTY;
+
+  move = UP;
+
+  for (k = 0; array[k].value || array[k].type || array[k].name; k++)
+    {
+      type = convert_old_type (array[k].type);
+
+      p = _asn1_add_static_node (&e_list, type & (~CONST_DOWN));
+      if (array[k].name)
+       _asn1_set_name (p, array[k].name);
+      if (array[k].value)
+       _asn1_set_value (p, array[k].value, strlen (array[k].value) + 1);
+
+      if (*definitions == NULL)
+       *definitions = p;
+
+      if (move == DOWN)
+       {
+         if (p_last && p_last->down)
+           _asn1_delete_structure (e_list, &p_last->down, 0);
+         _asn1_set_down (p_last, p);
+       }
+      else if (move == RIGHT)
+       {
+         if (p_last && p_last->right)
+           _asn1_delete_structure (e_list, &p_last->right, 0);
+         _asn1_set_right (p_last, p);
+       }
+
+      p_last = p;
+
+      if (type & CONST_DOWN)
+       move = DOWN;
+      else if (type & CONST_RIGHT)
+       move = RIGHT;
+      else
+       {
+         while (p_last != *definitions)
+           {
+             p_last = _asn1_find_up (p_last);
+
+             if (p_last == NULL)
+               break;
+
+             if (p_last->type & CONST_RIGHT)
+               {
+                 p_last->type &= ~CONST_RIGHT;
+                 move = RIGHT;
+                 break;
+               }
+           }                   /* while */
+       }
+    }                          /* while */
+
+  if (p_last == *definitions)
+    {
+      result = _asn1_check_identifier (*definitions);
+      if (result == ASN1_SUCCESS)
+       {
+         _asn1_change_integer_value (*definitions);
+         result = _asn1_expand_object_id (&e_list, *definitions);
+       }
+    }
+  else
+    {
+      result = ASN1_ARRAY_ERROR;
+    }
+
+  if (errorDescription != NULL)
+    {
+      if (result == ASN1_IDENTIFIER_NOT_FOUND)
+       {
+         Estrcpy (errorDescription, ":: identifier '");
+         Estrcat (errorDescription, _asn1_identifierMissing);
+         Estrcat (errorDescription, "' not found");
+       }
+      else
+       errorDescription[0] = 0;
+    }
+
+  if (result != ASN1_SUCCESS)
+    {
+      _asn1_delete_list_and_nodes (e_list);
+      *definitions = NULL;
+    }
+  else
+    _asn1_delete_list (e_list);
+
+  return result;
+}
+
+/**
+ * asn1_delete_structure:
+ * @structure: pointer to the structure that you want to delete.
+ *
+ * Deletes the structure *@structure.  At the end, *@structure is set
+ * to NULL.
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ *   *@structure was NULL.
+ **/
+int
+asn1_delete_structure (asn1_node * structure)
+{
+  return _asn1_delete_structure (NULL, structure, 0);
+}
+
+/**
+ * asn1_delete_structure2:
+ * @structure: pointer to the structure that you want to delete.
+ * @flags: additional flags (see %ASN1_DELETE_FLAG_ZEROIZE)
+ *
+ * Deletes the structure *@structure.  At the end, *@structure is set
+ * to NULL.
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ *   *@structure was NULL.
+ **/
+int
+asn1_delete_structure2 (asn1_node * structure, unsigned int flags)
+{
+  return _asn1_delete_structure (NULL, structure, flags);
+}
+
+int
+_asn1_delete_structure (list_type * e_list, asn1_node * structure,
+                       unsigned int flags)
+{
+  asn1_node p, p2, p3;
+
+  if (*structure == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = *structure;
+  while (p)
+    {
+      if (p->down)
+       {
+         p = p->down;
+       }
+      else
+       {                       /* no down */
+         p2 = p->right;
+         if (p != *structure)
+           {
+             p3 = _asn1_find_up (p);
+             _asn1_set_down (p3, p2);
+             if (e_list)
+               _asn1_delete_node_from_list (e_list, p);
+             _asn1_remove_node (p, flags);
+             p = p3;
+           }
+         else
+           {                   /* p==root */
+             p3 = _asn1_find_left (p);
+             if (!p3)
+               {
+                 p3 = _asn1_find_up (p);
+                 if (p3)
+                   _asn1_set_down (p3, p2);
+                 else
+                   {
+                     if (p->right)
+                       p->right->left = NULL;
+                   }
+               }
+             else
+               _asn1_set_right (p3, p2);
+             if (e_list)
+               _asn1_delete_node_from_list (e_list, p);
+             _asn1_remove_node (p, flags);
+             p = NULL;
+           }
+       }
+    }
+
+  *structure = NULL;
+  return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_delete_element:
+ * @structure: pointer to the structure that contains the element you
+ *   want to delete.
+ * @element_name: element's name you want to delete.
+ *
+ * Deletes the element named *@element_name inside *@structure.
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ *   the @element_name was not found.
+ **/
+int
+asn1_delete_element (asn1_node structure, const char *element_name)
+{
+  asn1_node p2, p3, source_node;
+
+  source_node = asn1_find_node (structure, element_name);
+
+  if (source_node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p2 = source_node->right;
+  p3 = _asn1_find_left (source_node);
+  if (!p3)
+    {
+      p3 = _asn1_find_up (source_node);
+      if (p3)
+       _asn1_set_down (p3, p2);
+      else if (source_node->right)
+       source_node->right->left = NULL;
+    }
+  else
+    _asn1_set_right (p3, p2);
+
+  return asn1_delete_structure (&source_node);
+}
+
+#ifndef __clang_analyzer__
+asn1_node
+_asn1_copy_structure3 (asn1_node_const source_node)
+{
+  asn1_node_const p_s;
+  asn1_node dest_node, p_d, p_d_prev;
+  int move;
+
+  if (source_node == NULL)
+    return NULL;
+
+  dest_node = _asn1_add_single_node (source_node->type);
+  if (dest_node == NULL)
+    return dest_node;
+
+  p_s = source_node;
+  p_d = dest_node;
+
+  move = DOWN;
+
+  do
+    {
+      if (move != UP)
+       {
+         if (p_s->name[0] != 0)
+           _asn1_cpy_name (p_d, p_s);
+         if (p_s->value)
+           _asn1_set_value (p_d, p_s->value, p_s->value_len);
+         if (p_s->down)
+           {
+             p_s = p_s->down;
+             p_d_prev = p_d;
+             p_d = _asn1_add_single_node (p_s->type);
+             _asn1_set_down (p_d_prev, p_d);
+             continue;
+           }
+         p_d->start = p_s->start;
+         p_d->end = p_s->end;
+       }
+
+      if (p_s == source_node)
+       break;
+
+      if (p_s->right)
+       {
+         move = RIGHT;
+         p_s = p_s->right;
+         p_d_prev = p_d;
+         p_d = _asn1_add_single_node (p_s->type);
+         _asn1_set_right (p_d_prev, p_d);
+       }
+      else
+       {
+         move = UP;
+         p_s = _asn1_find_up (p_s);
+         p_d = _asn1_find_up (p_d);
+       }
+    }
+  while (p_s != source_node);
+  return dest_node;
+}
+#else
+
+/* Non-production code */
+asn1_node
+_asn1_copy_structure3 (asn1_node_const source_node)
+{
+  return NULL;
+}
+#endif /* __clang_analyzer__ */
+
+
+static asn1_node
+_asn1_copy_structure2 (asn1_node_const root, const char *source_name)
+{
+  asn1_node source_node;
+
+  source_node = asn1_find_node (root, source_name);
+
+  return _asn1_copy_structure3 (source_node);
+
+}
+
+
+static int
+_asn1_type_choice_config (asn1_node node)
+{
+  asn1_node p, p2, p3, p4;
+  int move, tlen;
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = node;
+  move = DOWN;
+
+  while (!((p == node) && (move == UP)))
+    {
+      if (move != UP)
+       {
+         if ((type_field (p->type) == ASN1_ETYPE_CHOICE)
+             && (p->type & CONST_TAG))
+           {
+             p2 = p->down;
+             while (p2)
+               {
+                 if (type_field (p2->type) != ASN1_ETYPE_TAG)
+                   {
+                     p2->type |= CONST_TAG;
+                     p3 = _asn1_find_left (p2);
+                     while (p3)
+                       {
+                         if (type_field (p3->type) == ASN1_ETYPE_TAG)
+                           {
+                             p4 = _asn1_add_single_node (p3->type);
+                             tlen = _asn1_strlen (p3->value);
+                             if (tlen > 0)
+                               _asn1_set_value (p4, p3->value, tlen + 1);
+                             _asn1_set_right (p4, p2->down);
+                             _asn1_set_down (p2, p4);
+                           }
+                         p3 = _asn1_find_left (p3);
+                       }
+                   }
+                 p2 = p2->right;
+               }
+             p->type &= ~(CONST_TAG);
+             p2 = p->down;
+             while (p2)
+               {
+                 p3 = p2->right;
+                 if (type_field (p2->type) == ASN1_ETYPE_TAG)
+                   asn1_delete_structure (&p2);
+                 p2 = p3;
+               }
+           }
+         move = DOWN;
+       }
+      else
+       move = RIGHT;
+
+      if (move == DOWN)
+       {
+         if (p->down)
+           p = p->down;
+         else
+           move = RIGHT;
+       }
+
+      if (p == node)
+       {
+         move = UP;
+         continue;
+       }
+
+      if (move == RIGHT)
+       {
+         if (p->right)
+           p = p->right;
+         else
+           move = UP;
+       }
+      if (move == UP)
+       p = _asn1_find_up (p);
+    }
+
+  return ASN1_SUCCESS;
+}
+
+
+static int
+_asn1_expand_identifier (asn1_node * node, asn1_node_const root)
+{
+  asn1_node p, p2, p3;
+  char name2[ASN1_MAX_NAME_SIZE + 2];
+  int move;
+
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = *node;
+  move = DOWN;
+
+  while (!((p == *node) && (move == UP)))
+    {
+      if (move != UP)
+       {
+         if (type_field (p->type) == ASN1_ETYPE_IDENTIFIER)
+           {
+             snprintf (name2, sizeof (name2), "%s.%s", root->name, p->value);
+             p2 = _asn1_copy_structure2 (root, name2);
+             if (p2 == NULL)
+               {
+                 return ASN1_IDENTIFIER_NOT_FOUND;
+               }
+             _asn1_cpy_name (p2, p);
+             p2->right = p->right;
+             p2->left = p->left;
+             if (p->right)
+               p->right->left = p2;
+             p3 = p->down;
+             if (p3)
+               {
+                 while (p3->right)
+                   p3 = p3->right;
+                 _asn1_set_right (p3, p2->down);
+                 _asn1_set_down (p2, p->down);
+               }
+
+             p3 = _asn1_find_left (p);
+             if (p3)
+               _asn1_set_right (p3, p2);
+             else
+               {
+                 p3 = _asn1_find_up (p);
+                 if (p3)
+                   _asn1_set_down (p3, p2);
+                 else
+                   {
+                     p2->left = NULL;
+                   }
+               }
+
+             if (p->type & CONST_SIZE)
+               p2->type |= CONST_SIZE;
+             if (p->type & CONST_TAG)
+               p2->type |= CONST_TAG;
+             if (p->type & CONST_OPTION)
+               p2->type |= CONST_OPTION;
+             if (p->type & CONST_DEFAULT)
+               p2->type |= CONST_DEFAULT;
+             if (p->type & CONST_SET)
+               p2->type |= CONST_SET;
+             if (p->type & CONST_NOT_USED)
+               p2->type |= CONST_NOT_USED;
+
+             if (p == *node)
+               *node = p2;
+             _asn1_remove_node (p, 0);
+             p = p2;
+             move = DOWN;
+             continue;
+           }
+         move = DOWN;
+       }
+      else
+       move = RIGHT;
+
+      if (move == DOWN)
+       {
+         if (p->down)
+           p = p->down;
+         else
+           move = RIGHT;
+       }
+
+      if (p == *node)
+       {
+         move = UP;
+         continue;
+       }
+
+      if (move == RIGHT)
+       {
+         if (p->right)
+           p = p->right;
+         else
+           move = UP;
+       }
+      if (move == UP)
+       p = _asn1_find_up (p);
+    }
+
+  return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_create_element:
+ * @definitions: pointer to the structure returned by "parser_asn1" function
+ * @source_name: the name of the type of the new structure (must be
+ *   inside p_structure).
+ * @element: pointer to the structure created.
+ *
+ * Creates a structure of type @source_name.  Example using
+ *  "pkix.asn":
+ *
+ * rc = asn1_create_element(cert_def, "PKIX1.Certificate", certptr);
+ *
+ * Returns: %ASN1_SUCCESS if creation OK, %ASN1_ELEMENT_NOT_FOUND if
+ *   @source_name is not known.
+ **/
+int
+asn1_create_element (asn1_node_const definitions, const char *source_name,
+                    asn1_node * element)
+{
+  asn1_node dest_node;
+  int res;
+
+  dest_node = _asn1_copy_structure2 (definitions, source_name);
+
+  if (dest_node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  _asn1_set_name (dest_node, "");
+
+  res = _asn1_expand_identifier (&dest_node, definitions);
+  _asn1_type_choice_config (dest_node);
+
+  *element = dest_node;
+
+  return res;
+}
+
+
+/**
+ * asn1_print_structure:
+ * @out: pointer to the output file (e.g. stdout).
+ * @structure: pointer to the structure that you want to visit.
+ * @name: an element of the structure
+ * @mode: specify how much of the structure to print, can be
+ *   %ASN1_PRINT_NAME, %ASN1_PRINT_NAME_TYPE,
+ *   %ASN1_PRINT_NAME_TYPE_VALUE, or %ASN1_PRINT_ALL.
+ *
+ * Prints on the @out file descriptor the structure's tree starting
+ * from the @name element inside the structure @structure.
+ **/
+void
+asn1_print_structure (FILE * out, asn1_node_const structure, const char *name,
+                     int mode)
+{
+  asn1_node_const p, root;
+  int k, indent = 0, len, len2, len3;
+
+  if (out == NULL)
+    return;
+
+  root = asn1_find_node (structure, name);
+
+  if (root == NULL)
+    return;
+
+  p = root;
+  while (p)
+    {
+      if (mode == ASN1_PRINT_ALL)
+       {
+         for (k = 0; k < indent; k++)
+           fprintf (out, " ");
+         fprintf (out, "name:");
+         if (p->name[0] != 0)
+           fprintf (out, "%s  ", p->name);
+         else
+           fprintf (out, "NULL  ");
+       }
+      else
+       {
+         switch (type_field (p->type))
+           {
+           case ASN1_ETYPE_CONSTANT:
+           case ASN1_ETYPE_TAG:
+           case ASN1_ETYPE_SIZE:
+             break;
+           default:
+             for (k = 0; k < indent; k++)
+               fprintf (out, " ");
+             fprintf (out, "name:");
+             if (p->name[0] != 0)
+               fprintf (out, "%s  ", p->name);
+             else
+               fprintf (out, "NULL  ");
+           }
+       }
+
+      if (mode != ASN1_PRINT_NAME)
+       {
+         unsigned type = type_field (p->type);
+         switch (type)
+           {
+           case ASN1_ETYPE_CONSTANT:
+             if (mode == ASN1_PRINT_ALL)
+               fprintf (out, "type:CONST");
+             break;
+           case ASN1_ETYPE_TAG:
+             if (mode == ASN1_PRINT_ALL)
+               fprintf (out, "type:TAG");
+             break;
+           case ASN1_ETYPE_SIZE:
+             if (mode == ASN1_PRINT_ALL)
+               fprintf (out, "type:SIZE");
+             break;
+           case ASN1_ETYPE_DEFAULT:
+             fprintf (out, "type:DEFAULT");
+             break;
+           case ASN1_ETYPE_IDENTIFIER:
+             fprintf (out, "type:IDENTIFIER");
+             break;
+           case ASN1_ETYPE_ANY:
+             fprintf (out, "type:ANY");
+             break;
+           case ASN1_ETYPE_CHOICE:
+             fprintf (out, "type:CHOICE");
+             break;
+           case ASN1_ETYPE_DEFINITIONS:
+             fprintf (out, "type:DEFINITIONS");
+             break;
+           CASE_HANDLED_ETYPES:
+             fprintf (out, "%s", _asn1_tags[type].desc);
+             break;
+           default:
+             break;
+           }
+       }
+
+      if ((mode == ASN1_PRINT_NAME_TYPE_VALUE) || (mode == ASN1_PRINT_ALL))
+       {
+         switch (type_field (p->type))
+           {
+           case ASN1_ETYPE_CONSTANT:
+             if (mode == ASN1_PRINT_ALL)
+               if (p->value)
+                 fprintf (out, "  value:%s", p->value);
+             break;
+           case ASN1_ETYPE_TAG:
+             if (mode == ASN1_PRINT_ALL)
+               if (p->value)
+                 fprintf (out, "  value:%s", p->value);
+             break;
+           case ASN1_ETYPE_SIZE:
+             if (mode == ASN1_PRINT_ALL)
+               if (p->value)
+                 fprintf (out, "  value:%s", p->value);
+             break;
+           case ASN1_ETYPE_DEFAULT:
+             if (p->value)
+               fprintf (out, "  value:%s", p->value);
+             else if (p->type & CONST_TRUE)
+               fprintf (out, "  value:TRUE");
+             else if (p->type & CONST_FALSE)
+               fprintf (out, "  value:FALSE");
+             break;
+           case ASN1_ETYPE_IDENTIFIER:
+             if (p->value)
+               fprintf (out, "  value:%s", p->value);
+             break;
+           case ASN1_ETYPE_INTEGER:
+             if (p->value)
+               {
+                 len2 = -1;
+                 len = asn1_get_length_der (p->value, p->value_len, &len2);
+                 fprintf (out, "  value:0x");
+                 if (len > 0)
+                   for (k = 0; k < len; k++)
+                     fprintf (out, "%02x", (unsigned) (p->value)[k + len2]);
+               }
+             break;
+           case ASN1_ETYPE_ENUMERATED:
+             if (p->value)
+               {
+                 len2 = -1;
+                 len = asn1_get_length_der (p->value, p->value_len, &len2);
+                 fprintf (out, "  value:0x");
+                 if (len > 0)
+                   for (k = 0; k < len; k++)
+                     fprintf (out, "%02x", (unsigned) (p->value)[k + len2]);
+               }
+             break;
+           case ASN1_ETYPE_BOOLEAN:
+             if (p->value)
+               {
+                 if (p->value[0] == 'T')
+                   fprintf (out, "  value:TRUE");
+                 else if (p->value[0] == 'F')
+                   fprintf (out, "  value:FALSE");
+               }
+             break;
+           case ASN1_ETYPE_BIT_STRING:
+             if (p->value)
+               {
+                 len2 = -1;
+                 len = asn1_get_length_der (p->value, p->value_len, &len2);
+                 if (len > 0)
+                   {
+                     fprintf (out, "  value(%i):",
+                              (len - 1) * 8 - (p->value[len2]));
+                     for (k = 1; k < len; k++)
+                       fprintf (out, "%02x",
+                                (unsigned) (p->value)[k + len2]);
+                   }
+               }
+             break;
+           case ASN1_ETYPE_GENERALIZED_TIME:
+           case ASN1_ETYPE_UTC_TIME:
+             if (p->value)
+               {
+                 fprintf (out, "  value:");
+                 for (k = 0; k < p->value_len; k++)
+                   fprintf (out, "%c", (p->value)[k]);
+               }
+             break;
+           case ASN1_ETYPE_GENERALSTRING:
+           case ASN1_ETYPE_NUMERIC_STRING:
+           case ASN1_ETYPE_IA5_STRING:
+           case ASN1_ETYPE_TELETEX_STRING:
+           case ASN1_ETYPE_PRINTABLE_STRING:
+           case ASN1_ETYPE_UNIVERSAL_STRING:
+           case ASN1_ETYPE_UTF8_STRING:
+           case ASN1_ETYPE_VISIBLE_STRING:
+             if (p->value)
+               {
+                 len2 = -1;
+                 len = asn1_get_length_der (p->value, p->value_len, &len2);
+                 fprintf (out, "  value:");
+                 if (len > 0)
+                   for (k = 0; k < len; k++)
+                     fprintf (out, "%c", (p->value)[k + len2]);
+               }
+             break;
+           case ASN1_ETYPE_BMP_STRING:
+           case ASN1_ETYPE_OCTET_STRING:
+             if (p->value)
+               {
+                 len2 = -1;
+                 len = asn1_get_length_der (p->value, p->value_len, &len2);
+                 fprintf (out, "  value:");
+                 if (len > 0)
+                   for (k = 0; k < len; k++)
+                     fprintf (out, "%02x", (unsigned) (p->value)[k + len2]);
+               }
+             break;
+           case ASN1_ETYPE_OBJECT_ID:
+             if (p->value)
+               fprintf (out, "  value:%s", p->value);
+             break;
+           case ASN1_ETYPE_ANY:
+             if (p->value)
+               {
+                 len3 = -1;
+                 len2 = asn1_get_length_der (p->value, p->value_len, &len3);
+                 fprintf (out, "  value:");
+                 if (len2 > 0)
+                   for (k = 0; k < len2; k++)
+                     fprintf (out, "%02x", (unsigned) (p->value)[k + len3]);
+               }
+             break;
+           case ASN1_ETYPE_SET:
+           case ASN1_ETYPE_SET_OF:
+           case ASN1_ETYPE_CHOICE:
+           case ASN1_ETYPE_DEFINITIONS:
+           case ASN1_ETYPE_SEQUENCE_OF:
+           case ASN1_ETYPE_SEQUENCE:
+           case ASN1_ETYPE_NULL:
+             break;
+           default:
+             break;
+           }
+       }
+
+      if (mode == ASN1_PRINT_ALL)
+       {
+         if (p->type & 0x1FFFFF00)
+           {
+             fprintf (out, "  attr:");
+             if (p->type & CONST_UNIVERSAL)
+               fprintf (out, "UNIVERSAL,");
+             if (p->type & CONST_PRIVATE)
+               fprintf (out, "PRIVATE,");
+             if (p->type & CONST_APPLICATION)
+               fprintf (out, "APPLICATION,");
+             if (p->type & CONST_EXPLICIT)
+               fprintf (out, "EXPLICIT,");
+             if (p->type & CONST_IMPLICIT)
+               fprintf (out, "IMPLICIT,");
+             if (p->type & CONST_TAG)
+               fprintf (out, "TAG,");
+             if (p->type & CONST_DEFAULT)
+               fprintf (out, "DEFAULT,");
+             if (p->type & CONST_TRUE)
+               fprintf (out, "TRUE,");
+             if (p->type & CONST_FALSE)
+               fprintf (out, "FALSE,");
+             if (p->type & CONST_LIST)
+               fprintf (out, "LIST,");
+             if (p->type & CONST_MIN_MAX)
+               fprintf (out, "MIN_MAX,");
+             if (p->type & CONST_OPTION)
+               fprintf (out, "OPTION,");
+             if (p->type & CONST_1_PARAM)
+               fprintf (out, "1_PARAM,");
+             if (p->type & CONST_SIZE)
+               fprintf (out, "SIZE,");
+             if (p->type & CONST_DEFINED_BY)
+               fprintf (out, "DEF_BY,");
+             if (p->type & CONST_GENERALIZED)
+               fprintf (out, "GENERALIZED,");
+             if (p->type & CONST_UTC)
+               fprintf (out, "UTC,");
+             if (p->type & CONST_SET)
+               fprintf (out, "SET,");
+             if (p->type & CONST_NOT_USED)
+               fprintf (out, "NOT_USED,");
+             if (p->type & CONST_ASSIGN)
+               fprintf (out, "ASSIGNMENT,");
+           }
+       }
+
+      if (mode == ASN1_PRINT_ALL)
+       {
+         fprintf (out, "\n");
+       }
+      else
+       {
+         switch (type_field (p->type))
+           {
+           case ASN1_ETYPE_CONSTANT:
+           case ASN1_ETYPE_TAG:
+           case ASN1_ETYPE_SIZE:
+             break;
+           default:
+             fprintf (out, "\n");
+           }
+       }
+
+      if (p->down)
+       {
+         p = p->down;
+         indent += 2;
+       }
+      else if (p == root)
+       {
+         p = NULL;
+         break;
+       }
+      else if (p->right)
+       p = p->right;
+      else
+       {
+         while (1)
+           {
+             p = _asn1_find_up (p);
+             if (p == root)
+               {
+                 p = NULL;
+                 break;
+               }
+             indent -= 2;
+             if (p->right)
+               {
+                 p = p->right;
+                 break;
+               }
+           }
+       }
+    }
+}
+
+
+
+/**
+ * asn1_number_of_elements:
+ * @element: pointer to the root of an ASN1 structure.
+ * @name: the name of a sub-structure of ROOT.
+ * @num: pointer to an integer where the result will be stored
+ *
+ * Counts the number of elements of a sub-structure called NAME with
+ * names equal to "?1","?2", ...
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ *   @name is not known, %ASN1_GENERIC_ERROR if pointer @num is %NULL.
+ **/
+int
+asn1_number_of_elements (asn1_node_const element, const char *name, int *num)
+{
+  asn1_node_const node, p;
+
+  if (num == NULL)
+    return ASN1_GENERIC_ERROR;
+
+  *num = 0;
+
+  node = asn1_find_node (element, name);
+  if (node == NULL)
+    return ASN1_ELEMENT_NOT_FOUND;
+
+  p = node->down;
+
+  while (p)
+    {
+      if (p->name[0] == '?')
+       (*num)++;
+      p = p->right;
+    }
+
+  return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_find_structure_from_oid:
+ * @definitions: ASN1 definitions
+ * @oidValue: value of the OID to search (e.g. "1.2.3.4").
+ *
+ * Search the structure that is defined just after an OID definition.
+ *
+ * Returns: %NULL when @oidValue not found, otherwise the pointer to a
+ *   constant string that contains the element name defined just after
+ *   the OID.
+ **/
+const char *
+asn1_find_structure_from_oid (asn1_node_const definitions,
+                             const char *oidValue)
+{
+  char name[2 * ASN1_MAX_NAME_SIZE + 2];
+  char value[ASN1_MAX_NAME_SIZE];
+  asn1_node p;
+  int len;
+  int result;
+  const char *definitionsName;
+
+  if ((definitions == NULL) || (oidValue == NULL))
+    return NULL;               /* ASN1_ELEMENT_NOT_FOUND; */
+
+  definitionsName = definitions->name;
+
+  /* search the OBJECT_ID into definitions */
+  p = definitions->down;
+  while (p)
+    {
+      if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID) &&
+         (p->type & CONST_ASSIGN))
+       {
+         snprintf (name, sizeof (name), "%s.%s", definitionsName, p->name);
+
+         len = ASN1_MAX_NAME_SIZE;
+         result = asn1_read_value (definitions, name, value, &len);
+
+         if ((result == ASN1_SUCCESS) && (!strcmp (oidValue, value)))
+           {
+             p = p->right;
+             if (p == NULL)    /* reach the end of ASN1 definitions */
+               return NULL;    /* ASN1_ELEMENT_NOT_FOUND; */
+
+             return p->name;
+           }
+       }
+      p = p->right;
+    }
+
+  return NULL;                 /* ASN1_ELEMENT_NOT_FOUND; */
+}
+
+/**
+ * asn1_copy_node:
+ * @dst: Destination asn1 node.
+ * @dst_name: Field name in destination node.
+ * @src: Source asn1 node.
+ * @src_name: Field name in source node.
+ *
+ * Create a deep copy of a asn1_node variable. That
+ * function requires @dst to be expanded using asn1_create_element().
+ *
+ * Returns: Return %ASN1_SUCCESS on success.
+ **/
+int
+asn1_copy_node (asn1_node dst, const char *dst_name,
+               asn1_node_const src, const char *src_name)
+{
+  int result;
+  asn1_node dst_node;
+  void *data = NULL;
+  int size = 0;
+
+  result = asn1_der_coding (src, src_name, NULL, &size, NULL);
+  if (result != ASN1_MEM_ERROR)
+    return result;
+
+  data = malloc (size);
+  if (data == NULL)
+    return ASN1_MEM_ERROR;
+
+  result = asn1_der_coding (src, src_name, data, &size, NULL);
+  if (result != ASN1_SUCCESS)
+    {
+      free (data);
+      return result;
+    }
+
+  dst_node = asn1_find_node (dst, dst_name);
+  if (dst_node == NULL)
+    {
+      free (data);
+      return ASN1_ELEMENT_NOT_FOUND;
+    }
+
+  result = asn1_der_decoding (&dst_node, data, size, NULL);
+
+  free (data);
+
+  return result;
+}
+
+/**
+ * asn1_dup_node:
+ * @src: Source asn1 node.
+ * @src_name: Field name in source node.
+ *
+ * Create a deep copy of a asn1_node variable. This function
+ * will return an exact copy of the provided structure.
+ *
+ * Returns: Return %NULL on failure.
+ **/
+asn1_node
+asn1_dup_node (asn1_node_const src, const char *src_name)
+{
+  return _asn1_copy_structure2 (src, src_name);
+}
diff --git a/grub-core/lib/libtasn1/lib/structure.h 
b/grub-core/lib/libtasn1/lib/structure.h
new file mode 100644
index 000000000..b973ce963
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/structure.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+/*************************************************/
+/* File: structure.h                             */
+/* Description: list of exported object by       */
+/*   "structure.c"                               */
+/*************************************************/
+
+#ifndef _STRUCTURE_H
+# define _STRUCTURE_H
+
+# include "parser_aux.h"       /* list_type */
+
+int _asn1_create_static_structure (asn1_node_const pointer,
+                                  char *output_file_name, char *vector_name);
+
+asn1_node _asn1_copy_structure3 (asn1_node_const source_node);
+
+asn1_node _asn1_add_single_node (unsigned int type);
+
+asn1_node _asn1_find_left (asn1_node_const node);
+
+int
+_asn1_delete_structure (list_type * e_list, asn1_node * structure,
+                       unsigned int flags);
+
+#endif
diff --git a/grub-core/lib/libtasn1/libtasn1.h 
b/grub-core/lib/libtasn1/libtasn1.h
new file mode 100644
index 000000000..51cc7879f
--- /dev/null
+++ b/grub-core/lib/libtasn1/libtasn1.h
@@ -0,0 +1,643 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * LIBTASN1 is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * LIBTASN1 is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with LIBTASN1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+/**
+ * SECTION:libtasn1
+ * @short_description: GNU ASN.1 library
+ *
+ * The Libtasn1 library provides Abstract Syntax Notation One (ASN.1, as
+ * specified by the X.680 ITU-T recommendation) parsing and structures
+ * management, and Distinguished Encoding Rules (DER, as per X.690)
+ * encoding and decoding functions.
+ */
+
+
+#ifndef LIBTASN1_H
+# define LIBTASN1_H
+
+# ifndef ASN1_API
+#  if defined ASN1_BUILDING && defined HAVE_VISIBILITY && HAVE_VISIBILITY
+#   define ASN1_API __attribute__((__visibility__("default")))
+#  elif defined ASN1_BUILDING && defined _MSC_VER && ! defined ASN1_STATIC
+#   define ASN1_API __declspec(dllexport)
+#  elif defined _MSC_VER && ! defined ASN1_STATIC
+#   define ASN1_API __declspec(dllimport)
+#  else
+#   define ASN1_API
+#  endif
+# endif
+
+# ifdef __GNUC__
+#  define __LIBTASN1_CONST__  __attribute__((const))
+#  define __LIBTASN1_PURE__  __attribute__((pure))
+# else
+#  define __LIBTASN1_CONST__
+#  define __LIBTASN1_PURE__
+# endif
+
+# include <sys/types.h>
+# include <time.h>
+# include <stdio.h>            /* for FILE* */
+
+# ifdef __cplusplus
+extern "C"
+{
+# endif
+
+/**
+ * ASN1_VERSION:
+ *
+ * Version of the library as a string.
+ */
+# define ASN1_VERSION "4.19.0"
+
+/**
+ * ASN1_VERSION_MAJOR:
+ *
+ * Major version number of the library.
+ */
+# define ASN1_VERSION_MAJOR 4
+
+/**
+ * ASN1_VERSION_MINOR:
+ *
+ * Minor version number of the library.
+ */
+# define ASN1_VERSION_MINOR 19
+
+/**
+ * ASN1_VERSION_PATCH:
+ *
+ * Patch version number of the library.
+ */
+# define ASN1_VERSION_PATCH 0
+
+/**
+ * ASN1_VERSION_NUMBER:
+ *
+ * Version number of the library as a number.
+ */
+# define ASN1_VERSION_NUMBER 0x041300
+
+
+# if defined __GNUC__ && !defined ASN1_INTERNAL_BUILD
+#  define _ASN1_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + 
__GNUC_PATCHLEVEL__)
+#  if _ASN1_GCC_VERSION >= 30100
+#   define _ASN1_GCC_ATTR_DEPRECATED __attribute__ ((__deprecated__))
+#  endif
+# endif
+
+# ifndef _ASN1_GCC_ATTR_DEPRECATED
+#  define _ASN1_GCC_ATTR_DEPRECATED
+# endif
+
+/*****************************************/
+/* Errors returned by libtasn1 functions */
+/*****************************************/
+# define ASN1_SUCCESS                  0
+# define ASN1_FILE_NOT_FOUND           1
+# define ASN1_ELEMENT_NOT_FOUND                2
+# define ASN1_IDENTIFIER_NOT_FOUND     3
+# define ASN1_DER_ERROR                        4
+# define ASN1_VALUE_NOT_FOUND          5
+# define ASN1_GENERIC_ERROR            6
+# define ASN1_VALUE_NOT_VALID          7
+# define ASN1_TAG_ERROR                        8
+# define ASN1_TAG_IMPLICIT             9
+# define ASN1_ERROR_TYPE_ANY           10
+# define ASN1_SYNTAX_ERROR             11
+# define ASN1_MEM_ERROR                        12
+# define ASN1_MEM_ALLOC_ERROR          13
+# define ASN1_DER_OVERFLOW             14
+# define ASN1_NAME_TOO_LONG            15
+# define ASN1_ARRAY_ERROR              16
+# define ASN1_ELEMENT_NOT_EMPTY                17
+# define ASN1_TIME_ENCODING_ERROR      18
+# define ASN1_RECURSION                        19
+
+/*************************************/
+/* Constants used in asn1_visit_tree */
+/*************************************/
+# define ASN1_PRINT_NAME                       1
+# define ASN1_PRINT_NAME_TYPE          2
+# define ASN1_PRINT_NAME_TYPE_VALUE    3
+# define ASN1_PRINT_ALL                        4
+
+/*****************************************/
+/* Constants returned by asn1_read_tag   */
+/*****************************************/
+# define ASN1_CLASS_UNIVERSAL          0x00    /* old: 1 */
+# define ASN1_CLASS_APPLICATION                0x40    /* old: 2 */
+# define ASN1_CLASS_CONTEXT_SPECIFIC   0x80    /* old: 3 */
+# define ASN1_CLASS_PRIVATE            0xC0    /* old: 4 */
+# define ASN1_CLASS_STRUCTURED         0x20
+
+/*****************************************/
+/* Constants returned by asn1_read_tag   */
+/*****************************************/
+# define ASN1_TAG_BOOLEAN              0x01
+# define ASN1_TAG_INTEGER              0x02
+# define ASN1_TAG_SEQUENCE             0x10
+# define ASN1_TAG_SET                  0x11
+# define ASN1_TAG_OCTET_STRING         0x04
+# define ASN1_TAG_BIT_STRING           0x03
+# define ASN1_TAG_UTCTime              0x17
+# define ASN1_TAG_GENERALIZEDTime      0x18
+# define ASN1_TAG_OBJECT_ID            0x06
+# define ASN1_TAG_ENUMERATED           0x0A
+# define ASN1_TAG_NULL                 0x05
+# define ASN1_TAG_GENERALSTRING                0x1B
+# define ASN1_TAG_NUMERIC_STRING               0x12
+# define ASN1_TAG_IA5_STRING           0x16
+# define ASN1_TAG_TELETEX_STRING               0x14
+# define ASN1_TAG_PRINTABLE_STRING     0x13
+# define ASN1_TAG_UNIVERSAL_STRING     0x1C
+# define ASN1_TAG_BMP_STRING           0x1E
+# define ASN1_TAG_UTF8_STRING          0x0C
+# define ASN1_TAG_VISIBLE_STRING               0x1A
+
+/**
+ * asn1_node:
+ *
+ * Structure definition used for the node of the tree
+ * that represents an ASN.1 DEFINITION.
+ */
+  typedef struct asn1_node_st asn1_node_st;
+
+  typedef asn1_node_st *asn1_node;
+  typedef const asn1_node_st *asn1_node_const;
+
+/**
+ * ASN1_MAX_NAME_SIZE:
+ *
+ * Maximum number of characters of a name
+ * inside a file with ASN1 definitions.
+ */
+# define ASN1_MAX_NAME_SIZE 64
+
+
+/**
+ * asn1_static_node:
+ * @name: Node name
+ * @type: Node typ
+ * @value: Node value
+ *
+ * For the on-disk format of ASN.1 trees, created by asn1_parser2array().
+ */
+  typedef struct asn1_static_node_st
+  {
+    const char *name;          /* Node name */
+    unsigned int type;         /* Node type */
+    const void *value;         /* Node value */
+  } asn1_static_node;
+
+/* List of constants for field type of asn1_static_node */
+# define ASN1_ETYPE_INVALID        0
+# define ASN1_ETYPE_CONSTANT       1
+# define ASN1_ETYPE_IDENTIFIER     2
+# define ASN1_ETYPE_INTEGER        3
+# define ASN1_ETYPE_BOOLEAN        4
+# define ASN1_ETYPE_SEQUENCE       5
+# define ASN1_ETYPE_BIT_STRING     6
+# define ASN1_ETYPE_OCTET_STRING   7
+# define ASN1_ETYPE_TAG            8
+# define ASN1_ETYPE_DEFAULT        9
+# define ASN1_ETYPE_SIZE          10
+# define ASN1_ETYPE_SEQUENCE_OF   11
+# define ASN1_ETYPE_OBJECT_ID     12
+# define ASN1_ETYPE_ANY           13
+# define ASN1_ETYPE_SET           14
+# define ASN1_ETYPE_SET_OF        15
+# define ASN1_ETYPE_DEFINITIONS   16
+# define ASN1_ETYPE_CHOICE        18
+# define ASN1_ETYPE_IMPORTS       19
+# define ASN1_ETYPE_NULL          20
+# define ASN1_ETYPE_ENUMERATED    21
+# define ASN1_ETYPE_GENERALSTRING 27
+# define ASN1_ETYPE_NUMERIC_STRING 28
+# define ASN1_ETYPE_IA5_STRING     29
+# define ASN1_ETYPE_TELETEX_STRING 30
+# define ASN1_ETYPE_PRINTABLE_STRING 31
+# define ASN1_ETYPE_UNIVERSAL_STRING 32
+# define ASN1_ETYPE_BMP_STRING     33
+# define ASN1_ETYPE_UTF8_STRING    34
+# define ASN1_ETYPE_VISIBLE_STRING 35
+# define ASN1_ETYPE_UTC_TIME       36
+# define ASN1_ETYPE_GENERALIZED_TIME 37
+
+/**
+ * ASN1_DELETE_FLAG_ZEROIZE:
+ *
+ * Used by: asn1_delete_structure2()
+ *
+ * Zeroize values prior to deinitialization.
+ */
+# define ASN1_DELETE_FLAG_ZEROIZE 1
+
+/**
+ * ASN1_DECODE_FLAG_ALLOW_PADDING:
+ *
+ * Used by: asn1_der_decoding2()
+ *
+ * This flag would allow arbitrary data past the DER data.
+ */
+# define ASN1_DECODE_FLAG_ALLOW_PADDING 1
+/**
+ * ASN1_DECODE_FLAG_STRICT_DER:
+ *
+ * Used by: asn1_der_decoding2()
+ *
+ * This flag would ensure that no BER decoding takes place.
+ */
+# define ASN1_DECODE_FLAG_STRICT_DER (1<<1)
+/**
+ * ASN1_DECODE_FLAG_ALLOW_INCORRECT_TIME:
+ *
+ * Used by: asn1_der_decoding2()
+ *
+ * This flag will tolerate Time encoding errors when in strict DER.
+ */
+# define ASN1_DECODE_FLAG_ALLOW_INCORRECT_TIME (1<<2)
+
+  /* *INDENT-OFF* */
+
+/**
+ * asn1_data_node_st:
+ * @name: Node name
+ * @value: Node value
+ * @value_len: Node value size
+ * @type: Node value type (ASN1_ETYPE_*)
+ *
+ * Data node inside a #asn1_node structure.
+ */
+  struct asn1_data_node_st
+  {
+    const char *name;          /* Node name */
+    const void *value;         /* Node value */
+    unsigned int value_len;    /* Node value size */
+    unsigned int type;         /* Node value type (ASN1_ETYPE_*) */
+};
+
+  /* *INDENT-ON* */
+
+  typedef struct asn1_data_node_st asn1_data_node_st;
+
+/***********************************/
+/*  Fixed constants                */
+/***********************************/
+
+/**
+ * ASN1_MAX_ERROR_DESCRIPTION_SIZE:
+ *
+ * Maximum number of characters
+ * of a description message
+ * (null character included).
+ */
+# define ASN1_MAX_ERROR_DESCRIPTION_SIZE 128
+
+/***********************************/
+/*  Functions definitions          */
+/***********************************/
+
+  extern ASN1_API int
+    asn1_parser2tree (const char *file,
+                     asn1_node * definitions, char *error_desc);
+
+  extern ASN1_API int
+    asn1_parser2array (const char *inputFileName,
+                      const char *outputFileName,
+                      const char *vectorName, char *error_desc);
+
+  extern ASN1_API int
+    asn1_array2tree (const asn1_static_node * array,
+                    asn1_node * definitions, char *errorDescription);
+
+  extern ASN1_API void
+    asn1_print_structure (FILE * out, asn1_node_const structure,
+                         const char *name, int mode);
+
+  extern ASN1_API int
+    asn1_create_element (asn1_node_const definitions,
+                        const char *source_name, asn1_node * element);
+
+  extern ASN1_API int asn1_delete_structure (asn1_node * structure);
+
+  extern ASN1_API int asn1_delete_structure2 (asn1_node * structure,
+                                             unsigned int flags);
+
+  extern ASN1_API int
+    asn1_delete_element (asn1_node structure, const char *element_name);
+
+  extern ASN1_API int
+    asn1_write_value (asn1_node node_root, const char *name,
+                     const void *ivalue, int len);
+
+  extern ASN1_API int
+    asn1_read_value (asn1_node_const root, const char *name,
+                    void *ivalue, int *len);
+
+  extern ASN1_API int
+    asn1_read_value_type (asn1_node_const root, const char *name,
+                         void *ivalue, int *len, unsigned int *etype);
+
+  extern ASN1_API int
+    asn1_read_node_value (asn1_node_const node, asn1_data_node_st * data);
+
+  extern ASN1_API int
+    asn1_number_of_elements (asn1_node_const element, const char *name,
+                            int *num);
+
+  extern ASN1_API int
+    asn1_der_coding (asn1_node_const element, const char *name,
+                    void *ider, int *len, char *ErrorDescription);
+
+  extern ASN1_API int
+    asn1_der_decoding2 (asn1_node * element, const void *ider,
+                       int *max_ider_len, unsigned int flags,
+                       char *errorDescription);
+
+  extern ASN1_API int
+    asn1_der_decoding (asn1_node * element, const void *ider,
+                      int ider_len, char *errorDescription);
+
+/* Do not use. Use asn1_der_decoding() instead. */
+  extern ASN1_API int
+    asn1_der_decoding_element (asn1_node * structure,
+                              const char *elementName,
+                              const void *ider, int len,
+                              char *errorDescription)
+    _ASN1_GCC_ATTR_DEPRECATED;
+
+  extern ASN1_API int
+    asn1_der_decoding_startEnd (asn1_node element,
+                               const void *ider, int ider_len,
+                               const char *name_element,
+                               int *start, int *end);
+
+  extern ASN1_API int
+    asn1_expand_any_defined_by (asn1_node_const definitions,
+                               asn1_node * element);
+
+  extern ASN1_API int
+    asn1_expand_octet_string (asn1_node_const definitions,
+                             asn1_node * element,
+                             const char *octetName, const char *objectName);
+
+  extern ASN1_API int
+    asn1_read_tag (asn1_node_const root, const char *name,
+                  int *tagValue, int *classValue);
+
+  extern ASN1_API const char *asn1_find_structure_from_oid (asn1_node_const
+                                                           definitions,
+                                                           const char
+                                                           *oidValue);
+
+    __LIBTASN1_PURE__
+    extern ASN1_API const char *asn1_check_version (const char *req_version);
+
+  __LIBTASN1_PURE__ extern ASN1_API const char *asn1_strerror (int error);
+
+  extern ASN1_API void asn1_perror (int error);
+
+# define ASN1_MAX_TAG_SIZE 4
+# define ASN1_MAX_LENGTH_SIZE 9
+# define ASN1_MAX_TL_SIZE (ASN1_MAX_TAG_SIZE+ASN1_MAX_LENGTH_SIZE)
+  extern ASN1_API long
+    asn1_get_length_der (const unsigned char *der, int der_len, int *len);
+
+  extern ASN1_API long
+    asn1_get_length_ber (const unsigned char *ber, int ber_len, int *len);
+
+  extern ASN1_API void
+    asn1_length_der (unsigned long int len, unsigned char *der, int *der_len);
+
+/* Other utility functions. */
+
+  extern ASN1_API
+    int asn1_decode_simple_der (unsigned int etype, const unsigned char *der,
+                               unsigned int _der_len,
+                               const unsigned char **str,
+                               unsigned int *str_len);
+
+  extern ASN1_API
+    int asn1_decode_simple_ber (unsigned int etype, const unsigned char *der,
+                               unsigned int _der_len,
+                               unsigned char **str,
+                               unsigned int *str_len, unsigned int *ber_len);
+
+  extern ASN1_API int
+    asn1_encode_simple_der (unsigned int etype, const unsigned char *str,
+                           unsigned int str_len, unsigned char *tl,
+                           unsigned int *tl_len);
+
+  extern ASN1_API asn1_node
+    asn1_find_node (asn1_node_const pointer, const char *name);
+
+  extern ASN1_API int
+    asn1_copy_node (asn1_node dst, const char *dst_name,
+                   asn1_node_const src, const char *src_name);
+  extern ASN1_API asn1_node
+    asn1_dup_node (asn1_node_const src, const char *src_name);
+
+/* Internal and low-level DER utility functions. */
+
+  extern ASN1_API int
+    asn1_get_tag_der (const unsigned char *der, int der_len,
+                     unsigned char *cls, int *len, unsigned long *tag);
+
+  extern ASN1_API void
+    asn1_octet_der (const unsigned char *str, int str_len,
+                   unsigned char *der, int *der_len);
+
+  extern ASN1_API int
+    asn1_get_octet_der (const unsigned char *der, int der_len,
+                       int *ret_len, unsigned char *str,
+                       int str_size, int *str_len);
+
+  extern ASN1_API void asn1_bit_der (const unsigned char *str, int bit_len,
+                                    unsigned char *der, int *der_len);
+
+  extern ASN1_API int
+    asn1_get_bit_der (const unsigned char *der, int der_len,
+                     int *ret_len, unsigned char *str,
+                     int str_size, int *bit_len);
+
+  extern ASN1_API int
+    asn1_get_object_id_der (const unsigned char *der,
+                           int der_len, int *ret_len,
+                           char *str, int str_size);
+
+  extern ASN1_API int
+    asn1_object_id_der (const char *str, unsigned char *der, int *der_len,
+                       unsigned flags);
+
+/* Compatibility types */
+
+/**
+ * asn1_retCode:
+ *
+ * Type formerly returned by libtasn1 functions.
+ *
+ * Deprecated: 3.0: Use int instead.
+ */
+  typedef int asn1_retCode _ASN1_GCC_ATTR_DEPRECATED;
+
+/**
+ * node_asn_struct:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define node_asn_struct _Pragma ("GCC warning \"'node_asn_struct' macro is 
deprecated, use 'asn1_node' instead.\"") asn1_node_st
+#  else
+#   define node_asn_struct asn1_node_st
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * node_asn:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define node_asn _Pragma ("GCC warning \"'node_asn' macro is deprecated, 
use 'asn1_node' instead.\"") asn1_node_st
+#  else
+#   define node_asn asn1_node_st
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * ASN1_TYPE:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define ASN1_TYPE _Pragma ("GCC warning \"'ASN1_TYPE' macro is deprecated, 
use 'asn1_node' instead.\"") asn1_node
+#  else
+#   define ASN1_TYPE asn1_node
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * ASN1_TYPE_EMPTY:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use NULL instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define ASN1_TYPE_EMPTY _Pragma ("GCC warning \"'ASN1_TYPE_EMPTY' macro is 
deprecated, use 'NULL' instead.\"") NULL
+#  else
+#   define ASN1_TYPE_EMPTY NULL
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * static_struct_asn:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_static_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define static_struct_asn _Pragma ("GCC warning \"'static_struct_asn' macro 
is deprecated, use 'asn1_static_node_st' instead.\"") asn1_static_node_st
+#  else
+#   define static_struct_asn asn1_static_node_st
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * ASN1_ARRAY_TYPE:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_static_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define ASN1_ARRAY_TYPE _Pragma ("GCC warning \"'ASN1_ARRAY_TYPE' macro is 
deprecated, use 'asn1_static_node' instead.\"") asn1_static_node
+#  else
+#   define ASN1_ARRAY_TYPE asn1_static_node
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * asn1_static_node_t:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_static_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define asn1_static_node_t _Pragma ("GCC warning \"'asn1_static_node_t' 
macro is deprecated, use 'asn1_static_node' instead.\"") asn1_static_node
+#  else
+#   define asn1_static_node_t asn1_static_node
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * node_data_struct:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_data_node_st instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define node_data_struct _Pragma ("GCC warning \"'node_data_struct' macro 
is deprecated, use 'asn1_data_node_st' instead.\"") asn1_data_node_st
+#  else
+#   define node_data_struct asn1_data_node_st
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * ASN1_DATA_NODE:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_data_node_st instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+#  if _ASN1_GCC_VERSION >= 30100
+#   define ASN1_DATA_NODE _Pragma ("GCC warning \"'asn1_static_node_t' macro 
is deprecated, use 'asn1_static_node' instead.\"") asn1_data_node_st
+#  else
+#   define ASN1_DATA_NODE asn1_data_node_st
+#  endif
+# endif                                /* !ASN1_DISABLE_DEPRECATED */
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif                         /* LIBTASN1_H */
diff --git a/grub-core/lib/libtasn1/tests/CVE-2018-1000654-1_asn1_tab.h 
b/grub-core/lib/libtasn1/tests/CVE-2018-1000654-1_asn1_tab.h
new file mode 100644
index 000000000..e7930136c
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/CVE-2018-1000654-1_asn1_tab.h
@@ -0,0 +1,32 @@
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <libtasn1.h>
+
+const asn1_static_node CVE_2018_1000654_1_asn1_tab[] = {
+  { "TEST_TREE", 536875024, NULL },
+  { NULL, 1610612748, NULL },
+  { "iso", 1073741825, "1"},
+  { "identified-organization", 1073741825, "3"},
+  { "dod", 1073741825, "6"},
+  { "internet", 1073741825, "1"},
+  { "security", 1073741825, "5"},
+  { "mechanisms", 1073741825, "5"},
+  { "pkix", 1073741825, "7"},
+  { "id-mod", 1073741825, "0"},
+  { "id-pkix1-implicit-88", 1, "2"},
+  { "id-xnyTest", 1879048204, NULL },
+  { NULL, 1073741825, "id-ix"},
+  { NULL, 1073741825, "29"},
+  { NULL, 1, "1"},
+  { "id-ix", 1880096780, "OBJECR"},
+  { NULL, 1073741825, "id-ix"},
+  { NULL, 1073741825, "29"},
+  { NULL, 1, "2"},
+  { "id-xnyTest", 805306380, NULL },
+  { NULL, 1073741825, "id-ix"},
+  { NULL, 1073741825, "29"},
+  { NULL, 1, "1"},
+  { NULL, 0, NULL }
+};
diff --git a/grub-core/lib/libtasn1/tests/CVE-2018-1000654-2_asn1_tab.h 
b/grub-core/lib/libtasn1/tests/CVE-2018-1000654-2_asn1_tab.h
new file mode 100644
index 000000000..e8170f5d5
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/CVE-2018-1000654-2_asn1_tab.h
@@ -0,0 +1,36 @@
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <libtasn1.h>
+
+const asn1_static_node CVE_2018_1000654_2_asn1_tab[] = {
+  { "TEST_TREE", 536875024, NULL },
+  { NULL, 1610612748, NULL },
+  { "iso", 1073741825, "1"},
+  { "identified-organization", 1073741825, "3"},
+  { "dod", 1073741825, "6"},
+  { "internet", 1073741825, "1"},
+  { "security", 1073741825, "5"},
+  { "mechanisms", 1073741825, "5"},
+  { "pkix", 1073741825, "7"},
+  { "id-mod", 1073741825, "0"},
+  { "id-pkix1-implicit-88", 1, "2"},
+  { "id-oneTest", 1879048204, NULL },
+  { NULL, 1073741825, "id-two"},
+  { NULL, 1073741825, "9"},
+  { NULL, 1, "1"},
+  { "id-two", 1879048204, NULL },
+  { NULL, 1073741825, "id-three"},
+  { NULL, 1073741825, "2"},
+  { NULL, 1, "2"},
+  { "id-three", 1879048204, NULL },
+  { NULL, 1073741825, "id-four"},
+  { NULL, 1073741825, "3"},
+  { NULL, 1, "3"},
+  { "id-four", 805306380, NULL },
+  { NULL, 1073741825, "id-two"},
+  { NULL, 1073741825, "3"},
+  { NULL, 1, "3"},
+  { NULL, 0, NULL }
+};
diff --git a/grub-core/lib/libtasn1/tests/CVE-2018-1000654.c 
b/grub-core/lib/libtasn1/tests/CVE-2018-1000654.c
new file mode 100644
index 000000000..0c22b7012
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/CVE-2018-1000654.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/****************************************************************/
+/* Description: reproducer for CVE-2018-1000654                        */
+/****************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "CVE-2018-1000654-1_asn1_tab.h"
+#include "CVE-2018-1000654-2_asn1_tab.h"
+
+int
+main (int argc, char *argv[])
+{
+  int result, verbose = 0;
+  asn1_node definitions = NULL;
+  char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
+
+  if (argc > 1)
+    verbose = 1;
+
+  printf ("Test 1\n");
+
+  result =
+    asn1_array2tree (CVE_2018_1000654_1_asn1_tab, &definitions,
+                    errorDescription);
+  if (result != ASN1_RECURSION)
+    {
+      asn1_perror (result);
+      printf ("ErrorDescription = %s\n\n", errorDescription);
+      exit (1);
+    }
+
+  asn1_delete_structure (&definitions);
+
+  printf ("Test 2\n");
+
+  result =
+    asn1_array2tree (CVE_2018_1000654_2_asn1_tab, &definitions,
+                    errorDescription);
+  if (result != ASN1_RECURSION)
+    {
+      asn1_perror (result);
+      printf ("ErrorDescription = %s\n\n", errorDescription);
+      exit (1);
+    }
+
+  asn1_delete_structure (&definitions);
+
+  if (verbose)
+    printf ("Success\n");
+  exit (0);
+}
diff --git a/grub-core/lib/libtasn1/tests/Test_overflow.c 
b/grub-core/lib/libtasn1/tests/Test_overflow.c
new file mode 100644
index 000000000..c61dea4bb
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/Test_overflow.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2012-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/* Written by Simon Josefsson */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <limits.h>
+
+#include "libtasn1.h"
+
+int
+main (int argc, char **argv)
+{
+  /* Test that values larger than long are rejected.  This has worked
+     fine with all versions of libtasn1. */
+  int verbose = 0;
+
+  if (argc > 1)
+    verbose = 1;
+
+  {
+    unsigned char der[] = "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF";
+    long l;
+    int len;
+
+    l = asn1_get_length_der (der, sizeof der, &len);
+
+    if (l == -2L)
+      {
+       if (verbose)
+         puts ("OK: asn1_get_length_der bignum");
+      }
+    else
+      {
+       printf ("ERROR: asn1_get_length_der bignum (l %ld len %d)\n", l, len);
+       return 1;
+      }
+  }
+
+  /* Test that values larger than int but smaller than long are
+     rejected.  This limitation was introduced with libtasn1 2.12. */
+  if (LONG_MAX > INT_MAX)
+    {
+      unsigned long num = ((long) UINT_MAX) << 2;
+      unsigned char der[20];
+      int der_len;
+      long l;
+      int len;
+
+      asn1_length_der (num, der, &der_len);
+
+      l = asn1_get_length_der (der, der_len, &len);
+
+      if (l == -2L)
+       {
+         if (verbose)
+           puts ("OK: asn1_get_length_der intnum");
+       }
+      else
+       {
+         printf ("ERROR: asn1_get_length_der intnum (l %ld len %d)\n", l,
+                 len);
+         return 1;
+       }
+    }
+
+  /* Test that values larger than would fit in the input string are
+     rejected.  This problem was fixed in libtasn1 2.12. */
+  {
+    unsigned long num = 64;
+    unsigned char der[20];
+    int der_len;
+    long l;
+    int len;
+
+    asn1_length_der (num, der, &der_len);
+
+    der_len = sizeof (der);
+    l = asn1_get_length_der (der, der_len, &len);
+
+    if (l == -4L)
+      {
+       if (verbose)
+         puts ("OK: asn1_get_length_der overflow-small");
+      }
+    else
+      {
+       printf ("ERROR: asn1_get_length_der overflow-small (l %ld len %d)\n",
+               l, len);
+       return 1;
+      }
+  }
+
+  /* Test that values larger than would fit in the input string are
+     rejected.  This problem was fixed in libtasn1 2.12. */
+  {
+    unsigned long num = 1073741824;
+    unsigned char der[20];
+    int der_len;
+    long l;
+    int len;
+
+    asn1_length_der (num, der, &der_len);
+
+    der_len = sizeof (der);
+    l = asn1_get_length_der (der, der_len, &len);
+
+    if (l == -4L)
+      {
+       if (verbose)
+         puts ("OK: asn1_get_length_der overflow-large1");
+      }
+    else
+      {
+       printf ("ERROR: asn1_get_length_der overflow-large1 (l %ld len %d)\n",
+               l, len);
+       return 1;
+      }
+  }
+
+  /* Test that values larger than would fit in the input string are
+     rejected.  This problem was fixed in libtasn1 2.12. */
+  {
+    unsigned long num = 2147483649;
+    unsigned char der[20];
+    int der_len;
+    long l;
+    int len;
+
+    asn1_length_der (num, der, &der_len);
+
+    der_len = sizeof (der);
+    l = asn1_get_length_der (der, der_len, &len);
+
+    if (l == -2L)
+      {
+       if (verbose)
+         puts ("OK: asn1_get_length_der overflow-large2");
+      }
+    else
+      {
+       printf ("ERROR: asn1_get_length_der overflow-large2 (l %ld len %d)\n",
+               l, len);
+       return 1;
+      }
+  }
+
+  return 0;
+}
diff --git a/grub-core/lib/libtasn1/tests/Test_simple.c 
b/grub-core/lib/libtasn1/tests/Test_simple.c
new file mode 100644
index 000000000..6cd07e069
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/Test_simple.c
@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by Simon Josefsson
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "libtasn1.h"
+
+struct tv
+{
+  int bitlen;
+  const char *bitstr;
+  int derlen;
+  const char *der;
+};
+
+static const struct tv tv[] = {
+  {0, "", 2, "\x01\x00"},
+  {1, "\x00", 3, "\x02\x07\x00"},
+  {2, "\x00", 3, "\x02\x06\x00"},
+  {3, "\x00", 3, "\x02\x05\x00"},
+  {4, "\x00", 3, "\x02\x04\x00"},
+  {5, "\x00", 3, "\x02\x03\x00"},
+  {6, "\x00", 3, "\x02\x02\x00"},
+  {7, "\x00", 3, "\x02\x01\x00"},
+  {8, "\x00\x00", 3, "\x02\x00\x00"},
+  {9, "\x00\x00", 4, "\x03\x07\x00\x00"},
+  {10, "\x00\x00", 4, "\x03\x06\x00\x00"},
+  {11, "\x00\x00", 4, "\x03\x05\x00\x00"},
+  {12, "\x00\x00", 4, "\x03\x04\x00\x00"},
+  {13, "\x00\x00", 4, "\x03\x03\x00\x00"},
+  {14, "\x00\x00", 4, "\x03\x02\x00\x00"},
+  {15, "\x00\x00", 4, "\x03\x01\x00\x00"},
+  {16, "\x00\x00", 4, "\x03\x00\x00\x00"},
+  {17, "\x00\x00\x00", 5, "\x04\x07\x00\x00\x00"},
+  {18, "\x00\x00\x00", 5, "\x04\x06\x00\x00\x00"},
+  {19, "\x00\x00\x00", 5, "\x04\x05\x00\x00\x00"},
+  {1, "\xFF", 3, "\x02\x07\x80"},
+  {2, "\xFF", 3, "\x02\x06\xc0"},
+  {3, "\xFF", 3, "\x02\x05\xe0"},
+  {4, "\xFF", 3, "\x02\x04\xf0"},
+  {5, "\xFF", 3, "\x02\x03\xf8"},
+  {6, "\xFF", 3, "\x02\x02\xfc"},
+  {7, "\xFF", 3, "\x02\x01\xfe"},
+  {8, "\xFF\xFF", 3, "\x02\x00\xff"},
+  {9, "\xFF\xFF", 4, "\x03\x07\xff\x80"},
+  {10, "\xFF\xFF", 4, "\x03\x06\xff\xc0"},
+  {11, "\xFF\xFF", 4, "\x03\x05\xff\xe0"},
+  {12, "\xFF\xFF", 4, "\x03\x04\xff\xf0"},
+  {13, "\xFF\xFF", 4, "\x03\x03\xff\xf8"},
+  {14, "\xFF\xFF", 4, "\x03\x02\xff\xfc"},
+  {15, "\xFF\xFF", 4, "\x03\x01\xff\xfe"},
+  {16, "\xFF\xFF", 4, "\x03\x00\xff\xff"},
+  {17, "\xFF\xFF\xFF", 5, "\x04\x07\xff\xff\x80"},
+  {18, "\xFF\xFF\xFF", 5, "\x04\x06\xff\xff\xc0"},
+  {19, "\xFF\xFF\xFF", 5, "\x04\x05\xff\xff\xe0"},
+};
+
+int
+main (int argc, char *argv[])
+{
+  int result;
+  unsigned char der[100];
+  unsigned char str[100];
+  int der_len = sizeof (der);
+  int str_size = sizeof (str);
+  int ret_len, bit_len;
+  size_t i;
+
+  {
+    unsigned int etype = 38;
+    unsigned int my_str_len = 10;
+    unsigned char my_str[10];
+    unsigned int tl_len = 10;
+    unsigned char tl[10];
+
+    /* https://gitlab.com/gnutls/libtasn1/-/issues/32 */
+    result = asn1_encode_simple_der (etype, my_str, my_str_len, tl, &tl_len);
+    if (result != ASN1_VALUE_NOT_VALID)
+      {
+       fprintf (stderr, "asn1_encode_simple_der out of range etype\n");
+       return 1;
+      }
+  }
+
+  /* Dummy test */
+
+  asn1_bit_der (NULL, 0, der, &der_len);
+  result = asn1_get_bit_der (der, 0, &ret_len, str, str_size, &bit_len);
+  if (result != ASN1_GENERIC_ERROR)
+    {
+      fprintf (stderr, "asn1_get_bit_der zero\n");
+      return 1;
+    }
+
+  /* Encode short strings with increasing bit lengths */
+
+  for (i = 0; i < sizeof (tv) / sizeof (tv[0]); i++)
+    {
+      /* Encode */
+
+      asn1_bit_der ((const unsigned char *) tv[i].bitstr, tv[i].bitlen,
+                   der, &der_len);
+
+#if 0
+      {
+       size_t j;
+       for (j = 0; j < der_len; j++)
+         printf ("\\x%02x", der[j]);
+       printf ("\n");
+      }
+#endif
+
+      if (der_len != tv[i].derlen || memcmp (der, tv[i].der, der_len) != 0)
+       {
+         fprintf (stderr, "asn1_bit_der iter %lu\n", (unsigned long) i);
+         return 1;
+       }
+
+      /* Decode it */
+
+      result = asn1_get_bit_der (der, der_len, &ret_len, str,
+                                str_size, &bit_len);
+      if (result != ASN1_SUCCESS || ret_len != tv[i].derlen
+         || bit_len != tv[i].bitlen)
+       {
+         fprintf (stderr, "asn1_get_bit_der iter %lu, err: %d\n",
+                  (unsigned long) i, result);
+         return 1;
+       }
+    }
+
+
+  /* Decode sample from "A Layman's Guide to a Subset of ASN.1, BER,
+     and DER" section 5.4 "BIT STRING": "The BER encoding of the BIT
+     STRING value "011011100101110111" can be any of the following,
+     among others, depending on the choice of padding bits, the form
+     of length octets [...]".
+   */
+
+  /* 03 04 06 6e 5d c0  DER encoding */
+
+  memcpy (der, "\x04\x06\x6e\x5d\xc0", 5);
+  der_len = 5;
+
+  result = asn1_get_bit_der (der, der_len, &ret_len, str, str_size, &bit_len);
+  if (result != ASN1_SUCCESS || ret_len != 5
+      || bit_len != 18 || memcmp (str, "\x6e\x5d\xc0", 3) != 0)
+    {
+      fprintf (stderr, "asn1_get_bit_der example\n");
+      return 1;
+    }
+
+  der_len = sizeof (der);
+  asn1_bit_der (str, bit_len, der, &der_len);
+  if (der_len != 5 || memcmp (der, "\x04\x06\x6e\x5d\xc0", 5) != 0)
+    {
+      fprintf (stderr, "asn1_bit_der example roundtrip\n");
+      return 1;
+    }
+
+  /* 03 04 06 6e 5d e0 padded with "100000" */
+
+  memcpy (der, "\x04\x06\x6e\x5d\xe0", 5);
+  der_len = 5;
+
+  result = asn1_get_bit_der (der, der_len, &ret_len, str, str_size, &bit_len);
+  if (result != ASN1_SUCCESS || ret_len != 5
+      || bit_len != 18 || memcmp (str, "\x6e\x5d\xe0", 3) != 0)
+    {
+      fprintf (stderr, "asn1_get_bit_der example padded\n");
+      return 1;
+    }
+
+  der_len = sizeof (der);
+  asn1_bit_der (str, bit_len, der, &der_len);
+  if (der_len != 5 || memcmp (der, "\x04\x06\x6e\x5d\xc0", 5) != 0)
+    {
+      fprintf (stderr, "asn1_bit_der example roundtrip\n");
+      return 1;
+    }
+
+  /* 03 81 04 06 6e 5d c0 long form of length octets */
+
+  memcpy (der, "\x81\x04\x06\x6e\x5d\xc0", 6);
+  der_len = 6;
+
+  result = asn1_get_bit_der (der, der_len, &ret_len, str, str_size, &bit_len);
+
+  if (result != ASN1_SUCCESS || ret_len != 6
+      || bit_len != 18 || memcmp (str, "\x6e\x5d\xc0", 3) != 0)
+    {
+      fprintf (stderr, "asn1_get_bit_der example long form\n");
+      return 1;
+    }
+
+  der_len = sizeof (der);
+  asn1_bit_der (str, bit_len, der, &der_len);
+  if (der_len != 5 || memcmp (der, "\x04\x06\x6e\x5d\xc0", 5) != 0)
+    {
+      fprintf (stderr, "asn1_bit_der example roundtrip\n");
+      return 1;
+    }
+
+  return 0;
+}
diff --git a/grub-core/lib/libtasn1/tests/Test_strings.c 
b/grub-core/lib/libtasn1/tests/Test_strings.c
new file mode 100644
index 000000000..27f7215e1
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/Test_strings.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2012-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by Simon Josefsson
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "libtasn1.h"
+
+struct tv
+{
+  unsigned int etype;
+  unsigned int str_len;
+  const void *str;
+  unsigned int der_len;
+  const void *der;
+};
+
+static const struct tv tv[] = {
+  {ASN1_ETYPE_IA5_STRING, 20,
+   
"\x63\x73\x63\x61\x40\x70\x61\x73\x73\x70\x6f\x72\x74\x2e\x67\x6f\x76\x2e\x67\x72",
+   22,
+   
"\x16\x14\x63\x73\x63\x61\x40\x70\x61\x73\x73\x70\x6f\x72\x74\x2e\x67\x6f\x76\x2e\x67\x72"},
+  {ASN1_ETYPE_PRINTABLE_STRING, 5, "\x4e\x69\x6b\x6f\x73",
+   7, "\x13\x05\x4e\x69\x6b\x6f\x73"},
+  {ASN1_ETYPE_UTF8_STRING, 12, "Αττική",
+   14, "\x0c\x0c\xce\x91\xcf\x84\xcf\x84\xce\xb9\xce\xba\xce\xae"},
+  {ASN1_ETYPE_TELETEX_STRING, 15,
+   "\x53\x69\x6d\x6f\x6e\x20\x4a\x6f\x73\x65\x66\x73\x73\x6f\x6e",
+   17,
+   "\x14\x0f\x53\x69\x6d\x6f\x6e\x20\x4a\x6f\x73\x65\x66\x73\x73\x6f\x6e"},
+  {ASN1_ETYPE_OCTET_STRING, 36,
+   
"\x30\x22\x80\x0F\x32\x30\x31\x31\x30\x38\x32\x31\x30\x38\x30\x30\x30\x36\x5A\x81\x0F\x32\x30\x31\x31\x30\x38\x32\x33\x32\x30\x35\x39\x35\x39\x5A",
+   38,
+   
"\x04\x24\x30\x22\x80\x0F\x32\x30\x31\x31\x30\x38\x32\x31\x30\x38\x30\x30\x30\x36\x5A\x81\x0F\x32\x30\x31\x31\x30\x38\x32\x33\x32\x30\x35\x39\x35\x39\x5A"}
+};
+
+#define SSTR(x) sizeof(x)-1,x
+static const struct tv ber[] = {
+  {ASN1_ETYPE_OCTET_STRING,
+   SSTR ("\xa0\xa0"),
+   SSTR ("\x24\x80\x04\x82\x00\x02\xa0\xa0\x00\x00")},
+  {ASN1_ETYPE_OCTET_STRING,
+   SSTR ("\xa0\xa0\xb0\xb0\xb0"),
+   SSTR
+   ("\x24\x80\x04\x82\x00\x02\xa0\xa0\x04\x82\x00\x03\xb0\xb0\xb0\x00\x00")},
+  {ASN1_ETYPE_OCTET_STRING,
+   SSTR ("\xa0\xa0\xb0\xb0\xb0\xa1\xa1"),
+   SSTR
+   
("\x24\x80\x04\x82\x00\x02\xa0\xa0\x04\x82\x00\x03\xb0\xb0\xb0\x24\x80\x04\x82\x00\x02\xa1\xa1\x00\x00\x00\x00")},
+  {ASN1_ETYPE_OCTET_STRING,
+   SSTR ("\xa0\xa0\xb0\xb0\xb0\xa1\xa1\xc1"),
+   SSTR
+   
("\x24\x80\x04\x82\x00\x02\xa0\xa0\x04\x82\x00\x03\xb0\xb0\xb0\x24\x80\x04\x82\x00\x02\xa1\xa1\x04\x82\x00\x01\xc1\x00\x00\x00\x00")},
+};
+
+int
+main (int argc, char *argv[])
+{
+  int ret;
+  unsigned char tl[ASN1_MAX_TL_SIZE];
+  unsigned int tl_len, der_len, str_len;
+  const unsigned char *str;
+  unsigned char *b;
+  unsigned int i;
+
+  /* Dummy test */
+
+  for (i = 0; i < sizeof (tv) / sizeof (tv[0]); i++)
+    {
+      /* Encode */
+      tl_len = sizeof (tl);
+      ret = asn1_encode_simple_der (tv[i].etype, tv[i].str, tv[i].str_len,
+                                   tl, &tl_len);
+      if (ret != ASN1_SUCCESS)
+       {
+         fprintf (stderr, "Encoding error in %u: %s\n", i,
+                  asn1_strerror (ret));
+         return 1;
+       }
+      der_len = tl_len + tv[i].str_len;
+
+      if (der_len != tv[i].der_len || memcmp (tl, tv[i].der, tl_len) != 0)
+       {
+         fprintf (stderr,
+                  "DER encoding differs in %u! (size: %u, expected: %u)\n",
+                  i, der_len, tv[i].der_len);
+         return 1;
+       }
+
+      /* decoding */
+      ret =
+       asn1_decode_simple_der (tv[i].etype, tv[i].der, tv[i].der_len, &str,
+                               &str_len);
+      if (ret != ASN1_SUCCESS)
+       {
+         fprintf (stderr, "Decoding error in %u: %s\n", i,
+                  asn1_strerror (ret));
+         return 1;
+       }
+
+      if (str_len != tv[i].str_len || memcmp (str, tv[i].str, str_len) != 0)
+       {
+         fprintf (stderr,
+                  "DER decoded data differ in %u! (size: %u, expected: %u)\n",
+                  i, der_len, tv[i].str_len);
+         return 1;
+       }
+    }
+
+  /* BER decoding */
+  for (i = 0; i < sizeof (ber) / sizeof (ber[0]); i++)
+    {
+      /* decoding */
+      ret =
+       asn1_decode_simple_ber (ber[i].etype, ber[i].der, ber[i].der_len, &b,
+                               &str_len, NULL);
+      if (ret != ASN1_SUCCESS)
+       {
+         fprintf (stderr, "BER decoding error in %u: %s\n", i,
+                  asn1_strerror (ret));
+         return 1;
+       }
+
+      if (str_len != ber[i].str_len || memcmp (b, ber[i].str, str_len) != 0)
+       {
+         fprintf (stderr,
+                  "BER decoded data differ in %u! (size: %u, expected: %u)\n",
+                  i, str_len, ber[i].str_len);
+         return 1;
+       }
+      free (b);
+    }
+
+
+  return 0;
+}
diff --git a/grub-core/lib/libtasn1/tests/object-id-decoding.c 
b/grub-core/lib/libtasn1/tests/object-id-decoding.c
new file mode 100644
index 000000000..06a6c52a2
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/object-id-decoding.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2016 Red Hat, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "libtasn1.h"
+
+struct tv
+{
+  int der_len;
+  const unsigned char *der;
+  const char *oid;
+  int expected_error;
+};
+
+static const struct tv tv[] = {
+  {.der_len = 5,
+   .der = (void *) "\x06\x03\x80\x37\x03",
+   .oid = "2.999.3",
+   .expected_error = ASN1_DER_ERROR    /* leading 0x80 */
+   },
+  {.der_len = 12,
+   .der = (void *) "\x06\x0a\x2b\x06\x01\x80\x01\x92\x08\x09\x05\x01",
+   .oid = "1.3.6.1.4.1.2312.9.5.1",
+   .expected_error = ASN1_DER_ERROR    /* leading 0x80 */
+   },
+  {.der_len = 6,
+   .der = (void *) "\x06\x04\x01\x02\x03\x04",
+   .oid = "0.1.2.3.4",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 5,
+   .der = (void *) "\x06\x03\x51\x02\x03",
+   .oid = "2.1.2.3",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 5,
+   .der = (void *) "\x06\x03\x88\x37\x03",
+   .oid = "2.999.3",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 12,
+   .der = (void *) "\x06\x0a\x2b\x06\x01\x04\x01\x92\x08\x09\x05\x01",
+   .oid = "1.3.6.1.4.1.2312.9.5.1",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 19,
+   .der =
+   (void *)
+   
"\x06\x11\xfa\x80\x00\x00\x00\x0e\x01\x0e\xfa\x80\x00\x00\x00\x0e\x63\x6f\x6d",
+   .oid = "2.1998768.0.0.14.1.14.1998848.0.0.14.99.111.109",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 19,
+   .der =
+   (void *)
+   
"\x06\x11\x2b\x06\x01\x04\x01\x92\x08\x09\x02\xaa\xda\xbe\xbe\xfa\x72\x01\x07",
+   .oid = "1.3.6.1.4.1.2312.9.2.1467399257458.1.7",
+   .expected_error = ASN1_SUCCESS},
+};
+
+int
+main (int argc, char *argv[])
+{
+  char str[128];
+  int ret, ret_len;
+  size_t i;
+
+  for (i = 0; i < sizeof (tv) / sizeof (tv[0]); i++)
+    {
+      /* decode */
+      ret =
+       asn1_get_object_id_der (tv[i].der + 1,
+                               tv[i].der_len - 1, &ret_len, str,
+                               sizeof (str));
+      if (ret != tv[i].expected_error)
+       {
+         fprintf (stderr,
+                  "%d: asn1_get_object_id_der iter %lu: got '%s' expected 
%d\n",
+                  __LINE__, (unsigned long) i, asn1_strerror (ret),
+                  tv[i].expected_error);
+         return 1;
+       }
+
+      if (tv[i].expected_error != ASN1_SUCCESS)
+       continue;
+
+      if (ret_len != tv[i].der_len - 1)
+       {
+         fprintf (stderr,
+                  "%d: iter %lu: error in DER, length returned is %d, had 
%d\n",
+                  __LINE__, (unsigned long) i, ret_len, tv[i].der_len - 1);
+         return 1;
+       }
+
+      if (strcmp (tv[i].oid, str) != 0)
+       {
+         fprintf (stderr,
+                  "%d: strcmp iter %lu: got invalid OID: %s, expected: %s\n",
+                  __LINE__, (unsigned long) i, str, tv[i].oid);
+         return 1;
+       }
+
+    }
+
+  return 0;
+}
diff --git a/grub-core/lib/libtasn1/tests/object-id-encoding.c 
b/grub-core/lib/libtasn1/tests/object-id-encoding.c
new file mode 100644
index 000000000..1a3396986
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/object-id-encoding.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2019 Nikos Mavrogiannopoulos
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "libtasn1.h"
+
+struct tv
+{
+  int der_len;
+  const unsigned char *der;
+  const char *oid;
+  int expected_error;
+};
+
+static const struct tv tv[] = {
+  {.der_len = 0,
+   .der = (void *) "",
+   .oid = "5.999.3",
+   .expected_error = ASN1_VALUE_NOT_VALID      /* cannot start with 5 */
+   },
+  {.der_len = 0,
+   .der = (void *) "",
+   .oid = "0.48.9",
+   .expected_error = ASN1_VALUE_NOT_VALID      /* second field cannot be 48 */
+   },
+  {.der_len = 0,
+   .der = (void *) "",
+   .oid = "1.40.9",
+   .expected_error = ASN1_VALUE_NOT_VALID      /* second field cannot be 40 */
+   },
+  {.der_len = 4,
+   .der = (void *) "\x06\x02\x4f\x63",
+   .oid = "1.39.99",
+   .expected_error = ASN1_SUCCESS,
+   },
+  {.der_len = 6,
+   .der = (void *) "\x06\x04\x01\x02\x03\x04",
+   .oid = "0.1.2.3.4",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 5,
+   .der = (void *) "\x06\x03\x51\x02\x03",
+   .oid = "2.1.2.3",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 5,
+   .der = (void *) "\x06\x03\x88\x37\x03",
+   .oid = "2.999.3",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 12,
+   .der = (void *) "\x06\x0a\x2b\x06\x01\x04\x01\x92\x08\x09\x05\x01",
+   .oid = "1.3.6.1.4.1.2312.9.5.1",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 19,
+   .der =
+   (void *)
+   
"\x06\x11\xfa\x80\x00\x00\x00\x0e\x01\x0e\xfa\x80\x00\x00\x00\x0e\x63\x6f\x6d",
+   .oid = "2.1998768.0.0.14.1.14.1998848.0.0.14.99.111.109",
+   .expected_error = ASN1_SUCCESS},
+  {.der_len = 19,
+   .der =
+   (void *)
+   
"\x06\x11\x2b\x06\x01\x04\x01\x92\x08\x09\x02\xaa\xda\xbe\xbe\xfa\x72\x01\x07",
+   .oid = "1.3.6.1.4.1.2312.9.2.1467399257458.1.7",
+   .expected_error = ASN1_SUCCESS},
+};
+
+int
+main (int argc, char *argv[])
+{
+  unsigned char der[128];
+  int ret, der_len, i, j;
+
+  for (i = 0; i < (int) (sizeof (tv) / sizeof (tv[0])); i++)
+    {
+      der_len = sizeof (der);
+      ret = asn1_object_id_der (tv[i].oid, der, &der_len, 0);
+      if (ret != ASN1_SUCCESS)
+       {
+         if (ret == tv[i].expected_error)
+           continue;
+         fprintf (stderr,
+                  "%d: iter %lu, encoding of OID failed: %s\n",
+                  __LINE__, (unsigned long) i, asn1_strerror (ret));
+         return 1;
+       }
+      else if (ret != tv[i].expected_error)
+       {
+         fprintf (stderr,
+                  "%d: iter %lu, encoding of OID %s succeeded when expecting 
failure\n",
+                  __LINE__, (unsigned long) i, tv[i].oid);
+         return 1;
+       }
+
+      if (der_len != tv[i].der_len || memcmp (der, tv[i].der, der_len) != 0)
+       {
+         fprintf (stderr,
+                  "%d: iter %lu, re-encoding of OID %s resulted to different 
string (%d vs %d bytes)\n",
+                  __LINE__, (unsigned long) i, tv[i].oid, der_len,
+                  tv[i].der_len);
+         fprintf (stderr, "\nGot:\t\t");
+         for (j = 0; j < der_len; j++)
+           fprintf (stderr, "%.2x", der[j]);
+
+         fprintf (stderr, "\nExpected:\t");
+         for (j = 0; j < tv[i].der_len; j++)
+           fprintf (stderr, "%.2x", tv[i].der[j]);
+         fprintf (stderr, "\n");
+
+         return 1;
+       }
+    }
+
+  return 0;
+}
diff --git a/grub-core/lib/libtasn1/tests/octet-string.c 
b/grub-core/lib/libtasn1/tests/octet-string.c
new file mode 100644
index 000000000..69eb18a62
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/octet-string.c
@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by Simon Josefsson and Nikos Mavrogiannopoulos
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "libtasn1.h"
+
+struct tv
+{
+  const char *name;
+  int der_len;
+  const unsigned char *der_str;
+  int len;
+  const unsigned char *string;
+  int expected_error;
+  int ber;
+};
+
+static const struct tv tv[] = {
+  {.name = "primitive octet strings",
+   .der_len = 10,
+   .der_str = (void *) "\x04\x08\x01\x23\x45\x67\x89\xab\xcd\xef",
+   .len = 8,
+   .string = (void *) "\x01\x23\x45\x67\x89\xab\xcd\xef",
+   .ber = 0},
+  {.der_len = 22,
+   .der_str =
+   (void *)
+   
"\x04\x14\x13\x00\xd9\xa8\x47\xf7\xf2\x1c\xf4\xb0\xec\x5f\xc1\x73\xe5\x1b\x25\xc2\x62\x27",
+   .len = 20,
+   .string =
+   (void *)
+   
"\x13\x00\xD9\xA8\x47\xF7\xF2\x1C\xF4\xB0\xEC\x5F\xC1\x73\xE5\x1B\x25\xC2\x62\x27"},
+
+  {.name = "long type of length",
+   .der_len = 23,
+   .der_str =
+   (void *)
+   
"\x04\x81\x14\x13\x00\xd9\xa8\x47\xf7\xf2\x1c\xf4\xb0\xec\x5f\xc1\x73\xe5\x1b\x25\xc2\x62\x27",
+   .len = 20,
+   .string =
+   (void *)
+   
"\x13\x00\xD9\xA8\x47\xF7\xF2\x1C\xF4\xB0\xEC\x5F\xC1\x73\xE5\x1B\x25\xC2\x62\x27",
+   .ber = 1},
+  {.der_len = 11,
+   .der_str = (void *) "\x04\x81\x08\x01\x23\x45\x67\x89\xab\xcd\xef",
+   .len = 8,
+   .string = (void *) "\x01\x23\x45\x67\x89\xab\xcd\xef",
+   .ber = 1},
+
+  {.name = "constructed - indefinite",
+   .der_len = 11,
+   .der_str = (void *) "\x24\x80\x04\x05\x01\x02\x03\x04\x05\x00\x00",
+   .len = 5,
+   .string = (void *) "\x01\x02\x03\x04\x05",
+   .ber = 1,
+   },
+
+  {.name = "constructed - definite - concat",
+   .der_len = 12,
+   .der_str = (void *) "\x24\x0a\x04\x04\x0a\x0b\x0c\x0d\x04\x02\x0e\x0f",
+   .len = 6,
+   .string = (void *) "\x0a\x0b\x0c\x0d\x0e\x0f",
+   .ber = 1,
+   },
+  {.name = "constructed - definite - recursive",
+   .der_len = 15,
+   .der_str =
+   (void *) "\x24\x0d\x04\x04\x0a\x0b\x0c\x0d\x24\x05\x04\x00\x04\x01\x0f",
+   .len = 5,
+   .string = (void *) "\x0a\x0b\x0c\x0d\x0f",
+   .ber = 1,
+   },
+  {.name = "constructed - definite - single",
+   .der_len = 7,
+   .der_str = (void *) "\x24\x05\x04\x03\x01\x02\x03",
+   .len = 3,
+   .string = (void *) "\x01\x02\x03",
+   .ber = 1,
+   },
+
+  /* a large amount of recursive indefinite encoding */
+  {.name = "a large amount of recursive indefinite encoding",
+   .der_len = 29325,
+   .der_str =
+   (void *)
+   
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+   .len = 0,
+   .ber = 1,
+   .expected_error = ASN1_DER_ERROR}
+};
+
+int
+main (int argc, char *argv[])
+{
+  unsigned char str[100];
+  unsigned char der[100];
+  int der_len = sizeof (der);
+  int str_size = sizeof (str);
+  unsigned char *tmp = NULL;
+  int ret, ret_len, j;
+  size_t i;
+
+  for (i = 0; i < sizeof (tv) / sizeof (tv[0]); i++)
+    {
+      /* Decode */
+
+      if (tv[i].ber == 0)
+       {
+         str_size = sizeof (str);
+         ret =
+           asn1_get_octet_der (tv[i].der_str + 1,
+                               tv[i].der_len - 1, &ret_len, str,
+                               sizeof (str), &str_size);
+         if (ret != tv[i].expected_error)
+           {
+             fprintf (stderr,
+                      "%d: asn1_get_octet_der: %s: got %d expected %d\n",
+                      __LINE__, tv[i].name, ret, tv[i].expected_error);
+             return 1;
+           }
+         if (tv[i].expected_error)
+           continue;
+
+         if (ret_len != tv[i].der_len - 1)
+           {
+             fprintf (stderr,
+                      "%d: error in DER, length returned is %d, had %d\n",
+                      __LINE__, ret_len, tv[i].der_len - 1);
+             return 1;
+           }
+
+         if (str_size != tv[i].len
+             || memcmp (tv[i].string, str, tv[i].len) != 0)
+           {
+             fprintf (stderr,
+                      "%d: memcmp: %s: got invalid decoding\n",
+                      __LINE__, tv[i].name);
+
+             fprintf (stderr, "\nGot:\t\t");
+             for (j = 0; j < str_size; j++)
+               fprintf (stderr, "%.2x", str[j]);
+
+             fprintf (stderr, "\nExpected:\t");
+             for (j = 0; j < tv[i].len; j++)
+               fprintf (stderr, "%.2x", tv[i].string[j]);
+             fprintf (stderr, "\n");
+             return 1;
+           }
+
+         /* Encode */
+         der_len = sizeof (der);
+         asn1_octet_der (str, str_size, der, &der_len);
+
+         if (der_len != tv[i].der_len - 1
+             || memcmp (tv[i].der_str + 1, der, tv[i].der_len - 1) != 0)
+           {
+             fprintf (stderr,
+                      "encoding: %s: got invalid encoding\n", tv[i].name);
+             return 1;
+           }
+       }
+
+      ret =
+       asn1_decode_simple_ber (ASN1_ETYPE_OCTET_STRING,
+                               tv[i].der_str, tv[i].der_len,
+                               &tmp, (unsigned int *) &str_size,
+                               (unsigned int *) &der_len);
+      if (ret != tv[i].expected_error)
+       {
+         fprintf (stderr,
+                  "%d: asn1_decode_simple_ber: %s: got %s expected %s\n",
+                  __LINE__, tv[i].name, asn1_strerror (ret),
+                  asn1_strerror (tv[i].expected_error));
+         return 1;
+       }
+      if (tv[i].expected_error)
+       continue;
+
+      if (der_len != tv[i].der_len)
+       {
+         fprintf (stderr,
+                  "%d: error: %s: DER, length returned is %d, had %d\n",
+                  __LINE__, tv[i].name, der_len, tv[i].der_len);
+         return 1;
+       }
+
+      if (str_size != tv[i].len || memcmp (tv[i].string, tmp, tv[i].len) != 0)
+       {
+         fprintf (stderr,
+                  "%d: memcmp: %s: got invalid decoding\n",
+                  __LINE__, tv[i].name);
+         fprintf (stderr, "\nGot:\t\t");
+         for (j = 0; j < str_size; j++)
+           fprintf (stderr, "%.2x", tmp[j]);
+
+         fprintf (stderr, "\nExpected:\t");
+         for (j = 0; j < tv[i].len; j++)
+           fprintf (stderr, "%.2x", tv[i].string[j]);
+         fprintf (stderr, "\n");
+         return 1;
+       }
+      free (tmp);
+      tmp = NULL;
+
+    }
+
+  return 0;
+}
diff --git a/grub-core/lib/libtasn1/tests/reproducers.c 
b/grub-core/lib/libtasn1/tests/reproducers.c
new file mode 100644
index 000000000..a09d8b021
--- /dev/null
+++ b/grub-core/lib/libtasn1/tests/reproducers.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2019-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/****************************************************************/
+/* Description: run reproducers for several fixed issues        */
+/****************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <libtasn1.h>
+
+#include <int.h>
+
+/* produces endless loop (fixed by d4b624b2):
+ * The following translates into a single node with all pointers
+ * (right,left,down) set to NULL. */
+const asn1_static_node endless_asn1_tab[] = {
+  {"TEST_TREE", 536875024, NULL},
+  {NULL, 0, NULL}
+};
+
+/* produces memory leak (fixed by f16d1ff9):
+ * 152 bytes in 1 blocks are definitely lost in loss record 1 of 1
+ *    at 0x4837B65: calloc (vg_replace_malloc.c:762)
+ *    by 0x4851C0D: _asn1_add_static_node (parser_aux.c:71)
+ *    by 0x4853AAC: asn1_array2tree (structure.c:200)
+ *    by 0x10923B: main (single_node.c:67)
+ */
+const asn1_static_node tab[] = {
+  {"a", CONST_DOWN, ""},
+  {"b", 0, ""},
+  {"c", 0, ""},
+  {NULL, 0, NULL}
+};
+
+int
+main (int argc, char *argv[])
+{
+  int result, verbose = 0;
+  asn1_node definitions = NULL;
+  char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
+
+  if (argc > 1)
+    verbose = 1;
+
+  result = asn1_array2tree (endless_asn1_tab, &definitions, errorDescription);
+  if (result != ASN1_SUCCESS)
+    {
+      asn1_perror (result);
+      printf ("ErrorDescription = %s\n\n", errorDescription);
+      exit (EXIT_FAILURE);
+    }
+
+  asn1_delete_structure (&definitions);
+
+  definitions = NULL;
+  result = asn1_array2tree (tab, &definitions, errorDescription);
+  if (result != ASN1_SUCCESS)
+    {
+      asn1_perror (result);
+      printf ("ErrorDescription = %s\n\n", errorDescription);
+      exit (EXIT_FAILURE);
+    }
+
+  asn1_delete_structure (&definitions);
+
+  if (verbose)
+    printf ("Success\n");
+
+  exit (EXIT_SUCCESS);
+}
-- 
2.35.3




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