/* 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.org *//**    @file ocb_shift_xor.c   OCB implementation, internal function, by Tom St Denis*/#include "tomcrypt.h"#ifdef OCB_MODE/**   Compute the shift/xor for OCB (internal function)   @param ocb  The OCB state    @param Z    The destination of the shift*/void ocb_shift_xor(ocb_state *ocb, unsigned char *Z){   int x, y;   y = ocb_ntz(ocb->block_index++);   for (x = 0; x < ocb->block_len; x++) {       ocb->Li[x] ^= ocb->Ls[y][x];       Z[x]        = ocb->Li[x] ^ ocb->R[x];   }}#endif/* $Source: /cvs/libtom/libtomcrypt/src/encauth/ocb/ocb_shift_xor.c,v $ *//* $Revision: 1.3 $ *//* $Date: 2005/05/05 14:35:58 $ */