Mercurial > dropbear
view libtomcrypt/src/encauth/ocb/ocb_shift_xor.c @ 652:17962b2a6b8f
- Make sure we don't use channel-specific data after it has been freed
with a ChanType->closehandler()
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Sun, 04 Dec 2011 05:27:29 +0800 (2011-12-03) |
parents | 0cbe8f6dbf9e |
children | f849a5ca2efc |
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/* 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 */ /** @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: 1.4 $ */ /* $Date: 2006/03/31 14:15:35 $ */