From: Rik Snel Date: Wed, 29 Nov 2006 07:59:44 +0000 (+1100) Subject: [CRYPTO] lib: table driven multiplications in GF(2^128) X-Git-Tag: v2.6.20-rc1~145^2^2~7^2~32 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c494e0705d670c51ac736c8c4d92750705fe3187;p=pandora-kernel.git [CRYPTO] lib: table driven multiplications in GF(2^128) A lot of cypher modes need multiplications in GF(2^128). LRW, ABL, GCM... I use functions from this library in my LRW implementation and I will also use them in my ABL (Arbitrary Block Length, an unencumbered (correct me if I am wrong, wide block cipher mode). Elements of GF(2^128) must be presented as u128 *, it encourages automatic and proper alignment. The library contains support for two different representations of GF(2^128), see the comment in gf128mul.h. There different levels of optimization (memory/speed tradeoff). The code is based on work by Dr Brian Gladman. Notable changes: - deletion of two optimization modes - change from u32 to u64 for faster handling on 64bit machines - support for 'bbe' representation in addition to the, already implemented, 'lle' representation. - move 'inline void' functions from header to 'static void' in the source file - update to use the linux coding style conventions The original can be found at: http://fp.gladman.plus.com/AES/modes.vc8.19-06-06.zip The copyright (and GPL statement) of the original author is preserved. Signed-off-by: Rik Snel Signed-off-by: Herbert Xu --- Reading git-diff-tree failed