/* 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, tomstdenis@gmail.com, http://libtomcrypt.com */#include "tomcrypt.h"/**    @file pmac_shift_xor.c   PMAC implementation, internal function, by Tom St Denis */#ifdef LTC_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: 1.6 $ *//* $Date: 2006/11/03 00:39:49 $ */