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GnuPG 2.5.0 released for public testing

From: Werner Koch
Subject: GnuPG 2.5.0 released for public testing
Date: Mon, 08 Jul 2024 12:13:42 +0200
User-agent: Gnus/5.13 (Gnus v5.13)


We are pleased to announce the availability of a new GnuPG release:
version 2.5.0.  This release is the first of a series of public testing
releases eventually leading to a new stable version 2.6.

The main features in the 2.6 series are improvements for 64 bit Windows
and the introduction of a PQC algorithms.

The 2.6 series will not differ a lot from 2.4 because the majority of
changes are internal to make use of newer features from the supporting
libraries.  The risk of regressions is thus lower than it was with the
introduction of 2.4 in 2021.

What is GnuPG

The GNU Privacy Guard (GnuPG, GPG) is a complete and free implementation
of the OpenPGP and S/MIME standards.

GnuPG allows to encrypt and sign data and communication, features a
versatile key management system as well as access modules for public key
directories.  GnuPG itself is a command line tool with features for easy
integration with other applications.  The separate library GPGME provides
a uniform API to use the GnuPG engine by software written in common
programming languages.  A wealth of frontend applications and libraries
making use of GnuPG are available.  As an universal crypto engine GnuPG
provides support for S/MIME and Secure Shell in addition to OpenPGP.

GnuPG is Free Software (meaning that it respects your freedom).  It can
be freely used, modified and distributed under the terms of the GNU
General Public License.

Noteworthy changes in version 2.5.0 (2024-07-05)
         [compared to version 2.4.5]

  * gpg: Support composite Kyber+ECC public key algorithms.  This is
    experimental due to the yet outstanding FIPS-203 specification.

  * gpg: Allow algo string "pqc" for --quick-gen-key.  [rG12ac129a70]

  * gpg: New option --show-only-session-key.  [rG1695cf267e]

  * gpg: Print designated revokers also in non-colon listing mode.

  * gpg: Make --with-sig-check work with --show-key in non-colon
    listing mode.  [rG0c34edc443]

  * tpm: Rework error handling and fix key import [T7129, T7186]

  * Varous fixes to improve robustness on 64 bit Windows.  [T7139]

  Changes which will also show up in the firthcoming 2.4.6:

  * gpg: New command --quick-set-ownertrust.  [rG967678d972]

  * gpg: Indicate disabled keys in key listings and add list option
    "show-ownertrust".  [rG2a0a706eb2]

  * gpg: Make sure a DECRYPTION_OKAY is never issued for a bad OCB
    tag.  [T7042]

  * gpg: Do not allow to accidently set the RENC usage.  [T7072]

  * gpg: Accept armored files without CRC24 checksum.  [T7071]

  * gpg: New --import-option "only-pubkeys".  [T7146]

  * gpg: Repurpose the AKL mechanism "ldap" to work like the keyserver
    mechnism but only for LDAP keyservers.  [rG068ebb6f1e]

  * gpg: ADSKs are now configurable for new keys.  [T6882]

  * gpgsm: Emit user IDs with an empty Subject also in colon mode.

  * agent: Consider an empty pattern file as valid.  [rGc27534de95]

  * agent: Fix error handling of READKEY.  [T6012]

  * agent: Avoid random errors when storing key in ephemeral mode.
    [T7129, rGfdc5003956]

  * agent: Make "SCD DEVINFO --watch" more robust.  [T7151]

  * scd: Improve KDF data object handling for OpenPGP cards.  [T7058]

  * scd: Avoid buffer overrun with more than 16 PC/SC readers.
    [T7129, rG4c1b007035]

  * scd: Fix how the scdaemon on its pipe connection finishes.

  * gpgconf: Check readability of some files with -X and change its
    output format.  [rG98e287ba6d]

  * gpg-mail-tube: New tool to apply PGP/MIME encryption to a mail.

  * Fix some uninitialized variables and double frees in error code
    paths.  [T7129]


Getting the Software

Please follow the instructions found at <> or
read on:

GnuPG may be downloaded from one of the GnuPG mirror sites or direct
from its primary file server.  The list of mirrors can be found at
<>.  Note that GnuPG is not
available at

The GnuPG source code compressed using BZIP2 and its OpenPGP signature
are available here: (7946k)

An installer for Windows without any graphical frontend except for a
very minimal Pinentry tool is available here: (5297k)

The source used to build this Windows installer can be found in the same
directory with a ".tar.xz" suffix.  Note that these Windows binaries are
exceptionally not AuthentiCode signed and not well tested.

Checking the Integrity

In order to check that the version of GnuPG which you are going to
install is an original and unmodified one, you can do it in one of
the following ways:

 * If you already have a version of GnuPG installed, you can simply
   verify the supplied signature.  For example to verify the signature
   of the file gnupg-2.5.0.tar.bz2 you would use this command:

     gpg --verify gnupg-2.5.0.tar.bz2.sig gnupg-2.5.0.tar.bz2

   This checks whether the signature file matches the source file.
   You should see a message indicating that the signature is good and
   made by one or more of the release signing keys.  Make sure that
   this is a valid key, either by matching the shown fingerprint
   against a trustworthy list of valid release signing keys or by
   checking that the key has been signed by trustworthy other keys.
   See the end of this mail for information on the signing keys.

 * If you are not able to use an existing version of GnuPG, you have
   to verify the SHA-1 checksum.  On Unix systems the command to do
   this is either "sha1sum" or "shasum".  Assuming you downloaded the
   file gnupg-2.5.0.tar.bz2, you run the command like this:

     sha1sum gnupg-2.5.0.tar.bz2

   and check that the output matches the next line:

eb33777782b1d5c766f449a26126ab1d9cef25ef  gnupg-2.5.0.tar.bz2
bc4ff3b8b1b850eb18068f116d9d134583fdd92e  gnupg-w32-2.5.0_20240705.tar.xz
35caef9965b10eed53b8d09b48fba5d1479f3512  gnupg-w32-2.5.0_20240705.exe


This version of GnuPG has support for 26 languages with Chinese
(traditional and simplified), Czech, French, German, Italian,
Japanese, Norwegian, Polish, Russian, Turkish, and Ukrainian
being almost completely translated.

Documentation and Support

The file has the complete reference manual of the system.
Separate man pages are included as well but they miss some of the
details available only in the manual.  The manual is also available
online at

or can be downloaded as PDF at

You may also want to search the GnuPG mailing list archives or ask on
the gnupg-users mailing list for advise on how to solve problems.  Most
of the new features are around for several years and thus enough public
experience is available. has user contributed
information around GnuPG and relate software.

In case of build problems specific to this release please first check for updated information.  In particular you
may want to apply the Speedo patch mentioned there to avoid a glitch
with building the bzip2 library.

Please consult the archive of the gnupg-users mailing list before
reporting a bug:
We suggest to send bug reports for a new release to this list in favor
of filing a bug at  If you need commercial
support go to or

If you are a developer and you need a certain feature for your project,
please do not hesitate to bring it to the gnupg-devel mailing list for


Since 2001 maintenance and development of GnuPG is done by g10 Code GmbH
and has mostly been financed by donations.  Several full-time employed
developers and contractors are working exclusively on GnuPG and closely
related software like Libgcrypt, GPGME, Kleopatra and Gpg4win.

Fortunately, and this is still not common with free software, we have
established a way of financing the development while keeping all our
software free and freely available for everyone.  Our model is similar
to the way RedHat manages RHEL and Fedora: Except for the actual binary
of the MSI installer for Windows and client specific configuration
files, all the software is available under the GNU GPL and other Open
Source licenses.  Thus customers may even build and distribute their own
version of the software as long as they do not use our trademarks
GnuPG DesktopĀ® or GnuPG VS-DesktopĀ®.

We like to thank all the nice people who are helping the GnuPG project,
be it testing, coding, translating, suggesting, auditing, administering
the servers, spreading the word, answering questions on the mailing
lists, or helped with donations.

*Thank you all*

   Your GnuPG hackers

This is an announcement only mailing list.  Please send replies only to
the gnupg-users at mailing list.

List of Release Signing Keys:
To guarantee that a downloaded GnuPG version has not been tampered by
malicious entities we provide signature files for all tarballs and
binary versions.  The keys are also signed by the long term keys of
their respective owners.  Current releases are signed by one or more
of these four keys:

  rsa3072 2017-03-17 [expires: 2027-03-15]
  5B80 C575 4298 F0CB 55D8  ED6A BCEF 7E29 4B09 2E28
  Andre Heinecke (Release Signing Key)

  ed25519 2020-08-24 [expires: 2030-06-30]
  6DAA 6E64 A76D 2840 571B  4902 5288 97B8 2640 3ADA
  Werner Koch (dist signing 2020)

  ed25519 2021-05-19 [expires: 2027-04-04]
  AC8E 115B F73E 2D8D 47FA  9908 E98E 9B2D 19C6 C8BD
  Niibe Yutaka (GnuPG Release Key)

  brainpoolP256r1 2021-10-15 [expires: 2029-12-31]
  02F3 8DFF 731F F97C B039  A1DA 549E 695E 905B A208 (Release Signing Key 2021)

The keys are available at and
in any recently released GnuPG tarball in the file g10/distsigkey.gpg .
Note that this mail has been signed by a different key.

Arguing that you don't care about the right to privacy because you have
nothing to hide is no different from saying you don't care about free
speech because you have nothing to say.                - Edward Snowden

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