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Viewing changes to libtomcrypt/ocb_shift_xor.c

  • Committer: Bazaar Package Importer
  • Author(s): Matt Johnston
  • Date: 2005-12-08 19:20:21 UTC
  • mfrom: (1.2.2 upstream)
  • Revision ID: james.westby@ubuntu.com-20051208192021-nyp9rwnt77nsg6ty
Tags: 0.47-1
* New upstream release.
* SECURITY: Fix incorrect buffer sizing.

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libtomcrypt/ocb_shift_xor.c
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
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 *
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 * LibTomCrypt is a library that provides various cryptographic
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 * algorithms in a highly modular and flexible manner.
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 *
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 * The library is free for all purposes without any express
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 * guarantee it works.
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 *
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 * Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org
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 */
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/* OCB Implementation by Tom St Denis */
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#include "mycrypt.h"
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#ifdef OCB_MODE
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void ocb_shift_xor(ocb_state *ocb, unsigned char *Z)
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{
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   int x, y;
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   y = ocb_ntz(ocb->block_index++);
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   for (x = 0; x < ocb->block_len; x++) {
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       ocb->Li[x] ^= ocb->Ls[y][x];
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       Z[x]        = ocb->Li[x] ^ ocb->R[x];
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   }
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}
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#endif