[Announce] GnuPG 2.2.31 (LTS) released
wk at gnupg.org
Thu Sep 16 12:27:33 CEST 2021
We are pleased to announce the availability of a new GnuPG LTS release:
version 2.2.31. This release fixes a few minor bugs and a regression in
the last release. The LTS (long term support) series of GnuPG is
guaranteed to be maintained at least until the end of 2024. See
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 2.2.31 (2021-09-15)
* agent: Fix a regression in GET_PASSPHRASE. [#5577]
* scd: Fix an assertion failure in close_pcsc_reader. [67e1834ad4]
* scd: Add support for PC/SC in "GETINFO reader_list".
Getting the Software
Please follow the instructions found at <https://gnupg.org/download/> or
GnuPG 2.2.31 may be downloaded from one of the GnuPG mirror sites or
direct from its primary FTP server. The list of mirrors can be found at
<https://gnupg.org/download/mirrors.html>. Note that GnuPG is not
available at ftp.gnu.org.
The GnuPG source code compressed using BZIP2 and its OpenPGP signature
are available here:
An installer for Windows without any graphical frontend except for a
very minimal Pinentry tool is available here:
The source used to build the Windows installer can be found in the same
directory with a ".tar.xz" suffix.
A new version of Gpg4win will probably not be published. Users affected
by one of the fixed bugs may instead install this version on top of
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-2.2.31.tar.bz2 you would use this command:
gpg --verify gnupg-2.2.31.tar.bz2.sig gnupg-2.2.31.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-2.2.31.tar.bz2, you run the command like this:
and check that the output matches the next line:
This version of GnuPG has support for 26 languages with Chinese
(traditional and simplified), Czech, French, German, Italian,
Japanese, Norwegian, Polish, Russian, and Ukrainian being almost
Documentation and Support
The file gnupg.info 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 thee manual. The manual is also available
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. https://wiki.gnupg.org has user contributed
information around GnuPG and relate software.
In case of build problems specific to this release please first check
https://dev.gnupg.org/T5571 for updated information.
Please consult the archive of the gnupg-users mailing list before
reporting a bug: https://gnupg.org/documentation/mailing-lists.html.
We suggest to send bug reports for a new release to this list in favor
of filing a bug at https://bugs.gnupg.org. If you need commercial
support go to https://gnupg.com or https://gnupg.org/service.html.
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 still mostly financed by donations. Three full-time employed
developers as well as two contractors exclusively work on GnuPG and
closely related software like Libgcrypt, GPGME and Gpg4win.
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, or answering questions on the mailing
Many thanks to our numerous financial supporters, both corporate and
individuals. Without you it would not be possible to keep GnuPG in a
good and secure shape and to address all the small and larger requests
made by our users. Thanks.
Your GnuPG hackers
This is an announcement only mailing list. Please send replies only to
the gnupg-users'at'gnupg.org 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 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)
The keys are available at https://gnupg.org/signature_key.html and
in any recently released GnuPG tarball in the file g10/distsigkey.gpg .
Note that this mail has been signed by a different key.
Nils Melzer: Der Fall Julian Assange
It is really important to know the background of the Assange case to
understand the massive perils to free journalism. The book is right
now only available in German: https://dev.gnupg.org/u/melzerassang
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