1 To: gnupg-announce@gnupg.org, info-gnu@gnu.org
2 Mail-Followup-To: gnupg-users@gnupg.org
7 We are pleased to announce the availability of a new stable GnuPG-2
8 release: Version 2.0.24. This release includes a *security fix* to
9 stop a possible DoS using garbled compressed data packets which can
10 be used to put gpg into an infinite loop.
12 The GNU Privacy Guard (GnuPG) is GNU's tool for secure communication
13 and data storage. It can be used to encrypt data, create digital
14 signatures, help authenticating using Secure Shell and to provide a
15 framework for public key cryptography. It includes an advanced key
16 management facility and is compliant with the OpenPGP and S/MIME
19 GnuPG-2 has a different architecture than GnuPG-1 (e.g. 1.4.17) in
20 that it splits up functionality into several modules. However, both
21 versions may be installed alongside without any conflict. In fact,
22 the gpg version from GnuPG-1 is able to make use of the gpg-agent as
23 included in GnuPG-2 and allows for seamless passphrase caching. The
24 advantage of GnuPG-1 is its smaller size and the lack of dependency on
25 other modules at run and build time. We will keep maintaining GnuPG-1
26 versions because they are very useful for small systems and for server
27 based applications requiring only OpenPGP support.
29 GnuPG is distributed under the terms of the GNU General Public License
30 (GPLv3+). GnuPG-2 works best on GNU/Linux and *BSD systems but is
31 also available for other Unices, Microsoft Windows and Mac OS X.
37 * gpg: Avoid DoS due to garbled compressed data packets.
39 * gpg: Screen keyserver responses to avoid importing unwanted keys
42 * gpg: The validity of user ids is now shown by default. To revert
43 this add "list-options no-show-uid-validity" to gpg.conf.
45 * gpg: Print more specific reason codes with the INV_RECP status.
47 * gpg: Allow loading of a cert only key to an OpenPGP card.
49 * gpg-agent: Make ssh support for ECDSA keys work with Libgcrypt 1.6.
57 Please follow the instructions found at https://www.gnupg.org/download/
60 GnuPG 2.0.24 may be downloaded from one of the GnuPG mirror sites or
61 direct from ftp://ftp.gnupg.org/gcrypt/gnupg/ . The list of mirrors
62 can be found at https://www.gnupg.org/mirrors.html . Note that GnuPG
63 is not available at ftp.gnu.org.
65 On ftp.gnupg.org and on its mirrors you should find the following new
66 files in the gnupg/ directory:
68 - The GnuPG-2 source code compressed using BZIP2 and its OpenPGP
71 gnupg-2.0.24.tar.bz2 (4201k)
72 gnupg-2.0.24.tar.bz2.sig
74 - A patch file to upgrade a 2.0.23 GnuPG source tree. This patch does
75 not include updates of the language files.
77 gnupg-2.0.23-2.0.24.diff.bz2 (20k)
79 Note, that we don't distribute gzip compressed tarballs for GnuPG-2.
80 A Windows version will eventually be released at https://gpg4win.org .
83 Checking the Integrity
84 ======================
86 In order to check that the version of GnuPG which you are going to
87 install is an original and unmodified one, you can do it in one of
90 * If you already have a trusted version of GnuPG installed, you
91 can simply check the supplied signature. For example to check the
92 signature of the file gnupg-2.0.24.tar.bz2 you would use this command:
94 gpg --verify gnupg-2.0.24.tar.bz2.sig
96 This checks whether the signature file matches the source file.
97 You should see a message indicating that the signature is good and
98 made by that signing key. Make sure that you have the right key,
99 either by checking the fingerprint of that key with other sources
100 or by checking that the key has been signed by a trustworthy other
101 key. Note, that you can retrieve the signing key using the command
103 finger wk ,at' g10code.com
105 or using a keyserver like
107 gpg --keyserver keys.gnupg.net --recv-key 4F25E3B6
109 The distribution key 4F25E3B6 is signed by the well known key
112 NEVER USE A GNUPG VERSION YOU JUST DOWNLOADED TO CHECK THE
113 INTEGRITY OF THE SOURCE - USE AN EXISTING GNUPG INSTALLATION!
115 * If you are not able to use an old version of GnuPG, you have to verify
116 the SHA-1 checksum. Assuming you downloaded the file
117 gnupg-2.0.24.tar.bz2, you would run the sha1sum command like this:
119 sha1sum gnupg-2.0.24.tar.bz2
121 and check that the output matches the first line from the
124 010e027d5f622778cadc4c124013fe515ed705cf gnupg-2.0.24.tar.bz2
125 594d7f91ba4fc215345f18afee46c4aa9f2b3303 gnupg-2.0.23-2.0.24.diff.bz2
131 The file gnupg.info has the complete user manual of the system.
132 Separate man pages are included as well; however they have not all the
133 details available in the manual. It is also possible to read the
134 complete manual online in HTML format at
136 https://www.gnupg.org/documentation/manuals/gnupg/
138 or in Portable Document Format at
140 https://www.gnupg.org/documentation/manuals/gnupg.pdf .
142 The chapters on gpg-agent, gpg and gpgsm include information on how
143 to set up the whole thing. You may also want search the GnuPG mailing
144 list archives or ask on the gnupg-users mailing lists for advise on
145 how to solve problems. Many of the new features are around for
146 several years and thus enough public knowledge is already available.
148 Almost all mail clients support GnuPG-2. Mutt users may want to use
149 the configure option "--enable-gpgme" during build time and put a "set
150 use_crypt_gpgme" in ~/.muttrc to enable S/MIME support along with the
151 reworked OpenPGP support.
157 Please consult the archive of the gnupg-users mailing list before
158 reporting a bug <https://gnupg.org/documentation/mailing-lists.html>.
159 We suggest to send bug reports for a new release to this list in favor
160 of filing a bug at <https://bugs.gnupg.org>. We also have a dedicated
161 service directory at:
163 https://www.gnupg.org/service.html
165 The driving force behind the development of GnuPG is the company of
166 its principal author, Werner Koch. Maintenance and improvement of
167 GnuPG and related software takes up most of their resources. To allow
168 him to continue this work he kindly asks to either purchase a support
169 contract, engage g10 Code for custom enhancements, or to donate money:
171 https://gnupg.org/donate/
177 We have to thank all the people who helped with this release, be it
178 testing, coding, translating, suggesting, auditing, administering the
179 servers, spreading the word, and answering questions on the mailing