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ANNOUNCE: Nettle-2.5

From: Niels Möller
Subject: ANNOUNCE: Nettle-2.5
Date: Sat, 07 Jul 2012 16:01:09 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (usg-unix-v)

I'm happy to annnounce a new version of GNU Nettle, a low-level
cryptographics library. The Nettle home page can be found at

NEWS for the 2.5 release

        This release includes important portability fixes for Windows
        and MacOS. There are also a few new features.

        First a *warning*: Some internal functions have been removed
        from the library. Since the functions in question are internal
        and not documented, this is not considered a change of ABI or
        API. Programs explicitly using any of these functions will
        * The function pkcs1_signature_prefix has been renamed to
          _pkcs1_signature_prefix, and with slightly different

        * The file nettle-internal.c is no longer included in the
          library (the features defined there are used by the
          benchmark and test programs, and were never intended for
          public use).

        New features:

        * Support for the salsa20 block cipher, including x86_64
          assembler. Originally contributed by Simon Josefsson, based
          on the reference implementation, then further optimized.

        * Tentative interface for timing-resistant RSA functions,
          contributed by Nikos Mavrogiannopoulos.

        * A more general interface for PKCS#1 signatures, taking the
          input in the form of a "DigestInfo". Suggested by Nikos

        * Building of shared libraries (./configure --enable-shared)
          is now enabled by default.

        * Various portability fixes for MacOS and M$ Windows. A lot of
          this work done by Martin Storsjö.

        * In particular, Nettle now hopefully works on 64-bit Windows
          builds, "W64", including the x86_64 assembly code.

        * Documentation and example programs for the base16 and base64
          functions. Was contributed by Jeronimo Pellegrini back in
          2006, but unfortunately forgotten until now.

        * Use an additional table to avoid GF2^8 multiplications in
          aes_invert_key (mainly used by aes_set_decrypt_key). Also
          tabulate round constants in aes_set_encrypt_key.

        * The nettle repository has been migrated from cvs to git,
          with a public repository at
 To make it independent of
          the LSH repository, a few files have been moved around.
          While at it, files have also been converted from latin-1 to

        The libraries are intended to be binary compatible with
        nettle-2.2 and later. The shared library names are and, with sonames still and

Available at

and soon also at

Happy hacking,
/Niels Möller

Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
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