Hello!
We are pleased to announce the availability of a new GnuPG release:
version 2.5.5. This release is another one in 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 Kyber (FIPS-203) as PQC encryption algorithm.
Other than PQC support 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.
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 2.5.5 (2025-03-07)
=============================================== [compared to version
2.5.4]
* gpg: Fix a verification DoS due to a malicious subkey in the
keyring. [T7527]
* dirmngr: Fix possible hangs due to blocking connection requests.
[T6606, T7434]
* w32: On socket nonce mismatch close the socket. [T7434]
* w32: Print more detailed diagnostics for IPC errors.
* GPGME is not any more distributed with the Windows installer.
Please install gpg4win to get gpgme version.
Release-info: https://dev.gnupg.org/T7530
Getting the Software
===================
Please follow the instructions found at <https://gnupg.org/download/> 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
<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:
https://gnupg.org/ftp/gcrypt/gnupg/gnupg-2.5.5.tar.bz2 (7989k)
https://gnupg.org/ftp/gcrypt/gnupg/gnupg-2.5.5.tar.bz2.sig
An installer for Windows without any graphical frontend except for a
very minimal Pinentry tool is available here:
https://gnupg.org/ftp/gcrypt/binary/gnupg-w32-2.5.5_20250307.exe (5486k)
https://gnupg.org/ftp/gcrypt/binary/gnupg-w32-2.5.5_20250307.exe.sig
The source used to build this installer for 64-bit Windows is available at
https://gnupg.org/ftp/gcrypt/gnupg/gnupg-w32-2.5.5_20250307.tar.xz (15M)
https://gnupg.org/ftp/gcrypt/gnupg/gnupg-w32-2.5.5_20250307.tar.xz.sig
This source tarball may also be used to download all required libraries
at once to build a Unix version on any modern system. See the included
README.
A new Beta version of Gpg4win, our full featured installer for Windows
including this version of GnuPG as well as Kleopatra GUI and a PDF
editor will soon be available at https://www.gpg4win.org/version5.html
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-2.5.5.tar.bz2 you would use this command:
gpg --verify gnupg-2.5.5.tar.bz2.sig gnupg-2.5.5.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-2.5.5.tar.bz2, you run the command like this:
sha1sum gnupg-2.5.5.tar.bz2
and check that the output matches the next line:
b14ca751786112b3bb6686a462415c2896ceb73d gnupg-2.5.5.tar.bz2
552744d7f930c8905ad052c36b7ab06ce0d9ad25 gnupg-w32-2.5.5_20250307.tar.xz
0bfe05298d4f7953f4bb0361785003e859c39242 gnupg-w32-2.5.5_20250307.exe
Internationalization
===================
This version of GnuPG has support for 26 languages with Chinese
(traditional and simplified), Czech, French, German, Italian, Japanese,
Norwegian, Polish, Portuguese, Russian, Turkish, and Ukrainian being
almost completely translated.
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 the manual. The manual is also available
online at
https://gnupg.org/documentation/manuals/gnupg/
or can be downloaded as PDF at
https://gnupg.org/documentation/manuals/gnupg.pdf
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/T7530 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
discussion.
Thanks
=====
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 Desktop? or GnuPG VS-Desktop?.
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
p.s.
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 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
GnuPG.com (Release Signing Key 2021)
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.
--
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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