Mercurial > dropbear
view src/mac/pmac/pmac_shift_xor.c @ 280:59400faa4b44 libtomcrypt-orig libtomcrypt-1.05
Re-import libtomcrypt 1.05 for cleaner propagating.
From crypt-1.05.tar.bz2, SHA1 of 88250202bb51570dc64f7e8f1c943cda9479258f
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Wed, 08 Mar 2006 12:58:00 +0000 |
parents | |
children | d5faf4814ddb |
line wrap: on
line source
/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. * * Tom St Denis, [email protected], http://libtomcrypt.org */ #include "tomcrypt.h" /** @file pmac_shift_xor.c PMAC implementation, internal function, by Tom St Denis */ #ifdef PMAC /** Internal function. Performs the state update (adding correct multiple) @param pmac The PMAC state. */ void pmac_shift_xor(pmac_state *pmac) { int x, y; y = pmac_ntz(pmac->block_index++); #ifdef LTC_FAST for (x = 0; x < pmac->block_len; x += sizeof(LTC_FAST_TYPE)) { *((LTC_FAST_TYPE*)((unsigned char *)pmac->Li + x)) ^= *((LTC_FAST_TYPE*)((unsigned char *)pmac->Ls[y] + x)); } #else for (x = 0; x < pmac->block_len; x++) { pmac->Li[x] ^= pmac->Ls[y][x]; } #endif } #endif /* $Source: /cvs/libtom/libtomcrypt/src/mac/pmac/pmac_shift_xor.c,v $ */ /* $Revision: 1.4 $ */ /* $Date: 2005/05/05 14:35:59 $ */