Eric Lee / smarc-fsl-linux-kernel

07 Dec, 2006

1 commit

  • c494e0705   [CRYPTO] lib: table driven multiplications in GF(2^128) ... Browse Code ยป

    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

    Rik Snel