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[GNUnet-SVN] r29718 - in gnunet/src: include revocation
From: |
gnunet |
Subject: |
[GNUnet-SVN] r29718 - in gnunet/src: include revocation |
Date: |
Mon, 30 Sep 2013 20:27:33 +0200 |
Author: grothoff
Date: 2013-09-30 20:27:33 +0200 (Mon, 30 Sep 2013)
New Revision: 29718
Added:
gnunet/src/revocation/revocation_api.c
Modified:
gnunet/src/include/gnunet_revocation_service.h
gnunet/src/revocation/
gnunet/src/revocation/Makefile.am
gnunet/src/revocation/revocation.h
Log:
-revocation prototype
Modified: gnunet/src/include/gnunet_revocation_service.h
===================================================================
--- gnunet/src/include/gnunet_revocation_service.h 2013-09-30 18:00:11 UTC
(rev 29717)
+++ gnunet/src/include/gnunet_revocation_service.h 2013-09-30 18:27:33 UTC
(rev 29718)
@@ -24,6 +24,7 @@
/**
* @file include/gnunet_revocation_service.h
* @brief API to perform and access key revocations
+ * @author Christian Grothoff
* @defgroup revocation key revocation service
* @{
*/
@@ -94,8 +95,11 @@
* Perform key revocation.
*
* @param cfg the configuration to use
- * @param key key to revoke
- * @param pow proof of work to use
+ * @param key public key of the key to revoke
+ * @param sig signature to use on the revocation (should have been
+ * created using #GNUNET_REVOCATION_sign_revocation).
+ * @param pow proof of work to use (should have been created by
+ * iteratively calling #GNUNET_REVOCATION_check_pow)
* @param func funtion to call with the result of the check
* (called with `is_valid` being #GNUNET_NO if
* the revocation worked).
@@ -104,7 +108,8 @@
*/
struct GNUNET_REVOCATION_Handle *
GNUNET_REVOCATION_revoke (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const struct GNUNET_CRYPTO_EccPrivateKey *key,
+ const struct GNUNET_CRYPTO_EccPublicSignKey *key,
+ const struct GNUNET_CRYPTO_EccSignature *sig,
uint64_t pow,
GNUNET_REVOCATION_Callback func, void *func_cls);
@@ -131,6 +136,17 @@
uint64_t pow);
+/**
+ * Create a revocation signature.
+ *
+ * @param key private key of the key to revoke
+ * @param sig where to write the revocation signature
+ */
+void
+GNUNET_REVOCATION_sign_revocation (const struct GNUNET_CRYPTO_EccPrivateKey
*key,
+ struct GNUNET_CRYPTO_EccSignature *sig);
+
+
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
Index: gnunet/src/revocation
===================================================================
--- gnunet/src/revocation 2013-09-30 18:00:11 UTC (rev 29717)
+++ gnunet/src/revocation 2013-09-30 18:27:33 UTC (rev 29718)
Property changes on: gnunet/src/revocation
___________________________________________________________________
Added: svn:ignore
## -0,0 +1,4 ##
+revocation.conf
+Makefile.in
+Makefile
+.deps
Modified: gnunet/src/revocation/Makefile.am
===================================================================
--- gnunet/src/revocation/Makefile.am 2013-09-30 18:00:11 UTC (rev 29717)
+++ gnunet/src/revocation/Makefile.am 2013-09-30 18:27:33 UTC (rev 29718)
@@ -17,4 +17,15 @@
revocation.conf
-EXTRA_DIST = revocation.h
\ No newline at end of file
+lib_LTLIBRARIES = libgnunetrevocation.la
+
+libgnunetrevocation_la_SOURCES = \
+ revocation_api.c revocation.h
+libgnunetrevocation_la_LIBADD = \
+ $(top_builddir)/src/util/libgnunetutil.la \
+ $(GN_LIBINTL) $(XLIB)
+libgnunetrevocation_la_LDFLAGS = \
+ $(GN_LIB_LDFLAGS) $(WINFLAGS) \
+ -version-info 0:0:0
+
+#EXTRA_DIST =
Modified: gnunet/src/revocation/revocation.h
===================================================================
--- gnunet/src/revocation/revocation.h 2013-09-30 18:00:11 UTC (rev 29717)
+++ gnunet/src/revocation/revocation.h 2013-09-30 18:27:33 UTC (rev 29718)
@@ -48,7 +48,7 @@
/**
* Key to check.
*/
- struct GNUNET_CRYPTO_EccPublicSignKey key GNUNET_PACKED;
+ struct GNUNET_CRYPTO_EccPublicSignKey key;
};
@@ -91,26 +91,26 @@
uint32_t reserved GNUNET_PACKED;
/**
+ * Number that causes a hash collision with the @e public_key.
+ */
+ uint64_t proof_of_work GNUNET_PACKED;
+
+ /**
* Signature confirming revocation.
*/
- struct GNUNET_CRYPTO_EccSignature signature GNUNET_PACKED;
+ struct GNUNET_CRYPTO_EccSignature signature;
/**
* Must have purpose #GNUNET_SIGNATURE_PURPOSE_REVOCATION,
- * size expands over the key and the proof of work.
+ * size expands over the public key.
*/
- struct GNUNET_CRYPTO_EccSignaturePurpose purpose GNUNET_PACKED;
+ struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
/**
* Key to revoke.
*/
- struct GNUNET_CRYPTO_EccPublicSignKey public_key GNUNET_PACKED;
+ struct GNUNET_CRYPTO_EccPublicSignKey public_key;
- /**
- * Number that causes a hash collision with the @e public_key.
- */
- uint64_t proof_of_work GNUNET_PACKED;
-
};
Added: gnunet/src/revocation/revocation_api.c
===================================================================
--- gnunet/src/revocation/revocation_api.c (rev 0)
+++ gnunet/src/revocation/revocation_api.c 2013-09-30 18:27:33 UTC (rev
29718)
@@ -0,0 +1,240 @@
+/*
+ This file is part of GNUnet
+ (C) 2013 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public Licerevocation as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet 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 Licerevocation for more details.
+
+ You should have received a copy of the GNU General Public Licerevocation
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+ */
+/**
+ * @file revocation/revocation_api.c
+ * @brief API to perform and access key revocations
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_revocation_service.h"
+#include "gnunet_signatures.h"
+#include "gnunet_protocols.h"
+#include "revocation.h"
+
+
+/**
+ * Handle for the key revocation query.
+ */
+struct GNUNET_REVOCATION_Query
+{
+
+ /**
+ * Connection to the service.
+ */
+ struct GNUNET_CLIENT_Connection *client;
+
+ /**
+ * Our configuration.
+ */
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * Key to check.
+ */
+ struct GNUNET_CRYPTO_EccPublicSignKey key;
+
+ /**
+ * Function to call with the result.
+ */
+ GNUNET_REVOCATION_Callback func;
+
+ /**
+ * Closure for @e func.
+ */
+ void *func_cls;
+};
+
+
+/**
+ * Check if a key was revoked.
+ *
+ * @param cfg the configuration to use
+ * @param key key to check for revocation
+ * @param func funtion to call with the result of the check
+ * @param func_cls closure to pass to @a func
+ * @return handle to use in #GNUNET_REVOCATION_query_cancel to stop REVOCATION
from invoking the callback
+ */
+struct GNUNET_REVOCATION_Query *
+GNUNET_REVOCATION_query (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const struct GNUNET_CRYPTO_EccPublicSignKey *key,
+ GNUNET_REVOCATION_Callback func, void *func_cls)
+{
+ struct GNUNET_REVOCATION_Query *q;
+
+ q = GNUNET_new (struct GNUNET_REVOCATION_Query);
+ q->client = GNUNET_CLIENT_connect ("revocation", cfg);
+ q->cfg = cfg;
+ q->key = *key;
+ q->func = func;
+ q->func_cls = func_cls;
+ GNUNET_break (0);
+ return q;
+}
+
+
+/**
+ * Cancel key revocation check.
+ *
+ * @param q query to cancel
+ */
+void
+GNUNET_REVOCATION_query_cancel (struct GNUNET_REVOCATION_Query *q)
+{
+ GNUNET_CLIENT_disconnect (q->client);
+ GNUNET_free (q);
+}
+
+
+/**
+ * Handle for the key revocation operation.
+ */
+struct GNUNET_REVOCATION_Handle
+{
+
+ /**
+ * Connection to the service.
+ */
+ struct GNUNET_CLIENT_Connection *client;
+
+ /**
+ * Our configuration.
+ */
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * Key to revoke.
+ */
+ struct GNUNET_CRYPTO_EccPublicSignKey key;
+
+ /**
+ * Signature showing that we have the right to revoke.
+ */
+ struct GNUNET_CRYPTO_EccSignature sig;
+
+ /**
+ * Proof of work showing that we spent enough resources to broadcast
revocation.
+ */
+ uint64_t pow;
+
+ /**
+ * Function to call once we are done.
+ */
+ GNUNET_REVOCATION_Callback func;
+
+ /**
+ * Closure for @e func.
+ */
+ void *func_cls;
+
+};
+
+
+/**
+ * Perform key revocation.
+ *
+ * @param cfg the configuration to use
+ * @param key public key of the key to revoke
+ * @param sig signature to use on the revocation (should have been
+ * created using #GNUNET_REVOCATION_sign_revocation).
+ * @param pow proof of work to use (should have been created by
+ * iteratively calling #GNUNET_REVOCATION_check_pow)
+ * @param func funtion to call with the result of the check
+ * (called with `is_valid` being #GNUNET_NO if
+ * the revocation worked).
+ * @param func_cls closure to pass to @a func
+ * @return handle to use in #GNUNET_REVOCATION_cancel to stop REVOCATION from
invoking the callback
+ */
+struct GNUNET_REVOCATION_Handle *
+GNUNET_REVOCATION_revoke (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const struct GNUNET_CRYPTO_EccPublicSignKey *key,
+ const struct GNUNET_CRYPTO_EccSignature *sig,
+ uint64_t pow,
+ GNUNET_REVOCATION_Callback func, void *func_cls)
+{
+ struct GNUNET_REVOCATION_Handle *h;
+
+ h = GNUNET_new (struct GNUNET_REVOCATION_Handle);
+ h->client = GNUNET_CLIENT_connect ("revocation", cfg);
+ h->cfg = cfg;
+ h->key = *key;
+ h->sig = *sig;
+ h->pow = pow;
+ h->func = func;
+ h->func_cls = func_cls;
+ GNUNET_break (0);
+ return h;
+}
+
+
+/**
+ * Cancel key revocation.
+ *
+ * @param h operation to cancel
+ */
+void
+GNUNET_REVOCATION_revoke_cancel (struct GNUNET_REVOCATION_Handle *h)
+{
+ GNUNET_CLIENT_disconnect (h->client);
+ GNUNET_free (h);
+}
+
+
+/**
+ * Check if the given proof-of-work value
+ * would be acceptable for revoking the given key.
+ *
+ * @param key key to check for
+ * @param pow proof of work value
+ * @return #GNUNET_YES if the @a pow is acceptable, #GNUNET_NO if not
+ */
+int
+GNUNET_REVOCATION_check_pow (const struct GNUNET_CRYPTO_EccPublicSignKey *key,
+ uint64_t pow)
+{
+ GNUNET_break (0);
+ return GNUNET_NO;
+}
+
+
+/**
+ * Create a revocation signature.
+ *
+ * @param key private key of the key to revoke
+ * @param sig where to write the revocation signature
+ */
+void
+GNUNET_REVOCATION_sign_revocation (const struct GNUNET_CRYPTO_EccPrivateKey
*key,
+ struct GNUNET_CRYPTO_EccSignature *sig)
+{
+ struct GNUNET_REVOCATION_RevokeMessage rm;
+
+ rm.purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_REVOCATION);
+ rm.purpose.size = htonl (sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) +
+ sizeof (struct GNUNET_CRYPTO_EccPublicSignKey));
+ GNUNET_CRYPTO_ecc_key_get_public_for_signature (key, &rm.public_key);
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CRYPTO_ecc_sign (key,
+ &rm.purpose,
+ sig));
+}
+
+
+/* end of revocation_api.c */
+
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