We are proud to announce a new stable GnuTLS release: Version 2.4.0. GnuTLS is a modern C library that implement the standard network security protocol Transport Layer Security (TLS), for use by network applications. GnuTLS is developed for GNU/Linux, but works on many Unix-like systems and comes with a binary installer for Windows.
The core GnuTLS library is distribute under the terms of the GNU Lesser General Public License version 2.1 (or later). The "extra" GnuTLS libraries -- which contains TLS/IA support, LZO compression -- and the OpenSSL compatibility library self tests and command line tools are distributed under the GNU General Public License version 3.0 (or later). The manual is distributed under the GNU Free Documentation License version 1.2 (or later). The project page of the library is available at: http://www.gnutls.org/ http://www.gnu.org/software/gnutls/ http://josefsson.org/gnutls/ What's New ========== Major end-user visible changes compared to the v2.2 branch: * The OpenPGP sub-system has been improved and now supports subkeys. * The PSK sub-system has been improved and now supports password derivation and PSK identity hints. The password derivation algorithms support is documented in draft-ietf-netconf-tls-02.txt. * The certtool --inder and --outder has been replaced by --inraw and --outraw. This aligns terminology with OpenPGP, which doesn't use DER encoding. The old parameters will continue to work for some time. * Certtool now confirm passwords and changes permissions of private key files. * The default handshake size limit has been increased to 48kb. It appears as if some valid handshakes are large due to sending many CA certificates. (The earlier limit was 16kb.) * LZO compression is now disabled by default. The main reason is that LZO compression in TLS is not standardized, but license compatiblity issues with minilzo triggered us to make this decision now. * Improvements for cross-compilation to Windows and OpenWRT. * The look of the GTK-DOC manual has been improved. Major developer visible changes compared to the v2.2 branch: * Full OpenPGP support is part of libgnutls, licensed under the LGPL. * New APIs to access the raw X.509 Subject and Issuer DN's and elements from the certificate credentials structure, thanks to Joe Orton. * New APIs to improve working with username/passwords and PSK. * Names of constants to affect certificate printing changed. The constants are used for OpenPGP too, which the names didn't reflect, so the following name change has been made: Old name New name GNUTLS_X509_CRT_FULL GNUTLS_CRT_PRINT_FULL GNUTLS_X509_CRT_ONELINE GNUTLS_CRT_PRINT_ONELINE GNUTLS_X509_CRT_UNSIGNED_FULL GNUTLS_CRT_PRINT_UNSIGNED_FULL The old names will be mapped to the new names for some time. * The function gnutls_openpgp_privkey_get_id has been renamed to gnutls_openpgp_privkey_get_key_id. A compatibility mapping exists to avoid breaking API backwards compatibility. * Replaced all uses of alloca with malloc and free. * We no longer build with -D_REENTRANT -D_THREAD_SAFE. We have been unable to find a documented rationale for this practice. Of course, many smaller fixes have been made, see the ChangeLog file. API/ABI changes in GnuTLS 2.4 ============================= All OpenPGP related functions have been moved from libgnutls-extra to libgnutls, and several new functions have been added (see below). Before making the release, we discussed whether moving functions from libgnutls-extra to libgnutls would require us to increment the ABI version, but the general opinion was that this would not be required. All older functions continue to work the same. We are open to the possibility that this decision will lead to problem on some platform, and if it turns out that the Right Thing should have been to increment the shared library version, we would need to release an update within the 2.4.x branch that increments the shared library version. This release adds the following functions: gnutls_psk_client_get_hint gnutls_psk_set_server_credentials_hint gnutls_psk_netconf_derive_key Used to get/set the PSK identity hint, and derive PSK keys from passwords a'la netconf. gnutls_x509_dn_deinit gnutls_x509_dn_export gnutls_x509_dn_import gnutls_x509_dn_init Used to handle X.509 Certificate DN's directly. gnutls_hex2bin Converts a data buffer to hex. Useful for handling PSK/SRP shared secrets. gnutls_certificate_get_x509_cas gnutls_certificate_get_x509_crls gnutls_certificate_get_openpgp_keyring Functions for direct access to credential elements. gnutls_openpgp_crt_get_auth_subkey gnutls_openpgp_crt_get_key_id gnutls_openpgp_crt_get_pk_dsa_raw gnutls_openpgp_crt_get_pk_rsa_raw gnutls_openpgp_crt_get_preferred_key_id gnutls_openpgp_crt_get_revoked_status gnutls_openpgp_crt_get_subkey_count gnutls_openpgp_crt_get_subkey_creation_time gnutls_openpgp_crt_get_subkey_expiration_time gnutls_openpgp_crt_get_subkey_fingerprint gnutls_openpgp_crt_get_subkey_id gnutls_openpgp_crt_get_subkey_idx gnutls_openpgp_crt_get_subkey_pk_algorithm gnutls_openpgp_crt_get_subkey_pk_dsa_raw gnutls_openpgp_crt_get_subkey_pk_rsa_raw gnutls_openpgp_crt_get_subkey_revoked_status gnutls_openpgp_crt_get_subkey_usage gnutls_openpgp_crt_print gnutls_openpgp_crt_set_preferred_key_id gnutls_openpgp_keyring_get_crt gnutls_openpgp_keyring_get_crt_count gnutls_openpgp_privkey_export gnutls_openpgp_privkey_export_dsa_raw gnutls_openpgp_privkey_export_rsa_raw gnutls_openpgp_privkey_export_subkey_dsa_raw gnutls_openpgp_privkey_export_subkey_rsa_raw gnutls_openpgp_privkey_get_fingerprint gnutls_openpgp_privkey_get_key_id gnutls_openpgp_privkey_get_pk_algorithm gnutls_openpgp_privkey_get_preferred_key_id gnutls_openpgp_privkey_get_revoked_status gnutls_openpgp_privkey_get_subkey_count gnutls_openpgp_privkey_get_subkey_creation_time gnutls_openpgp_privkey_get_subkey_expiration_time gnutls_openpgp_privkey_get_subkey_fingerprint gnutls_openpgp_privkey_get_subkey_id gnutls_openpgp_privkey_get_subkey_idx gnutls_openpgp_privkey_get_subkey_pk_algorithm gnutls_openpgp_privkey_get_subkey_revoked_status gnutls_openpgp_privkey_set_preferred_key_id New OpenPGP related functions. The function gnutls_openpgp_crt_get_key_id is the same as the old from gnutls_openpgp_crt_get_id, see above. The release also adds a new header file 'gnutls/crypto.h', however it is currently not used. Getting the Software ==================== GnuTLS may be downloaded from one of the mirror sites or direct from <ftp://ftp.gnutls.org/pub/gnutls/>. The list of mirrors can be found at <http://www.gnu.org/software/gnutls/download.html>. Note, that GnuPG is not available at ftp.gnu.org. Here are the BZIP2 compressed sources (4.8MB): ftp://ftp.gnutls.org/pub/gnutls/gnutls-2.4.0.tar.bz2 http://josefsson.org/gnutls/releases/gnutls-2.4.0.tar.bz2 Here are OpenPGP detached signatures signed using key 0xB565716F: ftp://ftp.gnutls.org/pub/gnutls/gnutls-2.4.0.tar.bz2.sig http://josefsson.org/gnutls/releases/gnutls-2.4.0.tar.bz2.sig Note, that we don't distribute gzip compressed tarballs. In order to check that the version of GnuTLS which you are going to install is an original and unmodified one, you should verify the OpenPGP signature. You can use the command gpg --verify gnutls-2.4.0.tar.bz2.sig This checks whether the signature file matches the source file. You should see a message indicating that the signature is good and made by that signing key. Make sure that you have the right key, either by checking the fingerprint of that key with other sources or by checking that the key has been signed by a trustworthy other key. The signing key can be identified with the following information: pub 1280R/B565716F 2002-05-05 [expires: 2008-06-30] Key fingerprint = 0424 D4EE 81A0 E3D1 19C6 F835 EDA2 1E94 B565 716F uid Simon Josefsson <[EMAIL PROTECTED]> uid Simon Josefsson <[EMAIL PROTECTED]> sub 1280R/4D5D40AE 2002-05-05 [expires: 2008-06-30] The key is available from: http://josefsson.org/key.txt dns:b565716f.josefsson.org?TYPE=CERT Alternatively, after successfully verifying the OpenPGP signature of this announcement, you could verify that the files match the following checksum values. The values are for SHA-1 and SHA-224 respectively: 9bb3be9f2ad67037d3a571bec4fac65e0ffbadbb gnutls-2.4.0.tar.bz2 9dc4435b637a4841a88ec294b8a82841eb257cee4948bc957c1a96d7 gnutls-2.4.0.tar.bz2 Documentation ============= The manual is available online at: http://www.gnu.org/software/gnutls/documentation.html In particular the following formats are available: HTML: http://www.gnu.org/software/gnutls/manual/html_node/index.html PDF: http://www.gnu.org/software/gnutls/manual/gnutls.pdf For developers there is a GnuTLS API reference manual formatted using the GTK-DOC tools: http://www.gnu.org/software/gnutls/reference/gnutls-gnutls.html Community ========= If you need help to use GnuTLS, or want to help others, you are invited to join our help-gnutls mailing list, see: <http://lists.gnu.org/mailman/listinfo/help-gnutls>. If you wish to participate in the development of GnuTLS, you are invited to join our gnutls-dev mailing list, see: <http://lists.gnupg.org/mailman/listinfo/gnutls-dev>. Windows installer ================= GnuTLS has been ported to the Windows operating system, and a binary installer is available. The installer contains DLLs for application development, manuals, examples, and source code. The installer consists of libgpg-error 1.6, libgcrypt 1.4.1, libtasn1 1.4, and GnuTLS 2.4.0. For more information about GnuTLS for Windows: http://josefsson.org/gnutls4win/ The Windows binary installer and PGP signature: http://josefsson.org/gnutls4win/gnutls-2.4.0.exe (14MB) http://josefsson.org/gnutls4win/gnutls-2.4.0.exe.sig The checksum values for SHA-1 and SHA-224 are: e704df715ed6cad14c7a6e4350d7557d81de655b gnutls-2.4.0.exe b548c3178f89669d1245b266c7caa834feeea63b142a8871f1185097 gnutls-2.4.0.exe Thanks to Enrico Tassi, we also have mingw32 *.deb's available: http://josefsson.org/gnutls4win/mingw32-gnutls_2.3.15-1_all.deb The checksum values for SHA-1 and SHA-224 are: 3fc1e58fe58ac77c6dc433052685d59400a88559 mingw32-gnutls_2.4.0-1_all.deb 601549a449ce25dc4520c591bad42d833b23f05a8f67cf4fe732f7de mingw32-gnutls_2.4.0-1_all.deb Internationalization ==================== GnuTLS messages have been translated into Dutch, German, Malay, Polish, Swedish, and Vietnamese. We welcome the addition of more translations. Support ======= Improving GnuTLS is costly, but you can help! We are looking for organizations that find GnuTLS useful and wish to contribute back. You can contribute by reporting bugs, improve the software, or donate money or equipment. Commercial support contracts for GnuTLS are available, and they help finance continued maintenance. Simon Josefsson Datakonsult, a Stockholm based privately held company, is currently funding GnuTLS maintenance. We are always looking for interesting development projects. See http://josefsson.org/ for more details. The GnuTLS service directory is available at: http://www.gnu.org/software/gnutls/commercial.html Happy Hacking, Simon
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