From wk на gnupg.org Tue Feb 9 16:25:04 2016 From: wk на gnupg.org (Werner Koch) Date: Tue, 09 Feb 2016 16:25:04 +0100 Subject: [gnupg-ru] [Announce] Libgcrypt 1.6.5 with security fix released Message-ID: <87h9hhdhyn.fsf@vigenere.g10code.de> Hello! The GNU project is pleased to announce the availability of Libgcrypt version 1.6.5. This is a security fix release to mitigate a new side channel attack. Libgcrypt is a general purpose library of cryptographic building blocks. It does not provide any implementation of OpenPGP or other protocols. Thorough understanding of applied cryptography is required for proper use Libgcrypt. Noteworthy changes in version 1.6.5 =================================== * Mitigate side-channel attack on ECDH with Weierstrass curves [CVE-2015-7511]. See http://www.cs.tau.ac.IL/~tromer/ecdh/ for details. * Fix build problem on Solaris. Download ======== Please follow the instructions found at or read on: Libgcrypt may be downloaded from one of the GnuPG mirror sites or From its primary FTP server. The list of mirrors can be found at . Note that Libgcrypt is not available at ftp.gnu.org. The Libgcrypt source code compressed using BZIP2 and its OpenPGP signature are available here: ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-1.6.5.tar.bz2 (2490k) ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-1.6.5.tar.bz2.sig or here: https://gnupg.org/ftp/gcrypt/libgcrypt/libgcrypt-1.6.5.tar.bz2 (2490k) https://gnupg.org/ftp/gcrypt/libgcrypt/libgcrypt-1.6.5.tar.bz2.sig The same source code but compressed with the older GZIP algorithm is available here: ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-1.6.5.tar.gz (2901k) ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-1.6.5.tar.gz.sig The affected ECDH algorithm is for example used by GnuPG 2.1 (modern). An update of Libgcrypt is sufficient to fix this for GnuPG. We have also updated the Windows installer of that GnuPG version to include this fixed version of Libgcrypt: ftp://ftp.gnupg.org/gcrypt/binary/gnupg-w32-2.1.11_20160209.exe (2630k) ftp://ftp.gnupg.org/gcrypt/binary/gnupg-w32-2.1.11_20160209.exe.sig or here: https://gnupg.org/ftp/gcrypt/binary/gnupg-w32-2.1.11_20160209.exe (2630k) https://gnupg.org/ftp/gcrypt/binary/gnupg-w32-2.1.11_20160209.exe.sig The source used to build that Windows installer can be found in the same directory with a ".tar.xz" suffix. Checking the Integrity ====================== In order to check that the version of Libgcrypt you are going to build is an original and unmodified one, you can do it in one of the following ways: * Check the supplied OpenPGP signature. For example to check the signature of the file libgcrypt-1.6.5.tar.bz2 you would use this command: gpg --verify libgcrypt-1.6.5.tar.bz2.sig libgcrypt-1.6.5.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 below for information on the signing keys. * If you are not able to use 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 libgcrypt-1.6.5.tar.bz2, you run the command like this: sha1sum libgcrypt-1.6.5.tar.bz2 and check that the output matches the first line from the following list: c3a5a13e717f7b3e3895650afc1b6e0d3fe9c726 libgcrypt-1.6.5.tar.bz2 765370d9ee9e858c257dc06c3f0621bda8acaf69 libgcrypt-1.6.5.tar.gz 89bd31652d370ba69ac27b42b4d474d7edd9e0ea gnupg-w32-2.1.11_20160209.exe 0a81d3a7b404299f651bf6f6540176b00d0a3967 gnupg-w32-2.1.11_20160209.tar.xz Release Signing Keys ==================== To guarantee that a downloaded Libgcrypt version has not been tampered by malicious entities we provide signature files for all tarballs. 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: 2048R/4F25E3B6 2011-01-12 [expires: 2019-12-31] Key fingerprint = D869 2123 C406 5DEA 5E0F 3AB5 249B 39D2 4F25 E3B6 Werner Koch (dist sig) rsa2048/E0856959 2014-10-29 [expires: 2019-12-31] Key fingerprint = 46CC 7308 65BB 5C78 EBAB ADCF 0437 6F3E E085 6959 David Shaw (GnuPG Release Signing Key) rsa2048/33BD3F06 2014-10-29 [expires: 2016-10-28] Key fingerprint = 031E C253 6E58 0D8E A286 A9F2 2071 B08A 33BD 3F06 NIIBE Yutaka (GnuPG Release Key) rsa2048/7EFD60D9 2014-10-19 [expires: 2020-12-31] Key fingerprint = D238 EA65 D64C 67ED 4C30 73F2 8A86 1B1C 7EFD 60D9 Werner Koch (Release Signing Key) You may retrieve these keys from a keyserver using this command gpg --keyserver hkp://keys.gnupg.net --recv-keys \ 249B39D24F25E3B6 04376F3EE0856959 \ 2071B08A33BD3F06 8A861B1C7EFD60D9 The keys are also 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. Copying ======= Libgcrypt is distributed under the terms of the GNU Lesser General Public License (LGPLv2.1+). The helper programs as well as the documentation are distributed under the terms of the GNU General Public License (GPLv2+). The file LICENSES has notices about contributions that require these additional notices are distributed. Support ======= For help on developing with Libgcrypt you should read the included manual and optional ask on the gcrypt-devel mailing list [1]. A listing with commercial support offers for Libgcrypt and related software is available at the GnuPG web site [2]. If you are a developer and you may need a certain feature for your project, please do not hesitate to bring it to the gcrypt-devel mailing list for discussion. Please consult the archive of the gcrypt-devel 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 . For commercial support requests we keep a list of known service companies at: 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 gcrypt-devel mailing list for discussion. Maintenance and development of Libgcrypt is mostly financed by donations. We currently employ 3 full-time developers, one part-timer, and one contractor. They all work on GnuPG and closely related software like Libgcrypt. Please see https://gnupg.org/donate/ on how you can help. Thanks ====== We have to thank all the people who helped with this release, be it testing, coding, suggesting, auditing, administering the servers, spreading the word, answering questions on the mailing lists, and donating money. Niibe Yutaka did most of the work on fixing the side channel attack. Special thanks to Daniel Genkin, Lev Pachmanov, Itamar Pipman, and Eran Tromer for notifying us about their attack in advance and testing the fix. For the Libgcrypt hackers, Werner p.s. This is a announcement only mailing list. Please send replies only to the gcrypt-devel at gnupg.org mailing list. -- Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz. ----------- следущая часть ----------- A non-text attachment was scrubbed... Name: отсутствует Type: application/pgp-signature Size: 180 bytes Desc: отсутствует URL: ----------- следущая часть ----------- _______________________________________________ Gnupg-announce mailing list Gnupg-announce на gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-announce