Mercurial > dropbear
view libtomcrypt/src/encauth/ocb3/ocb3_int_xor_blocks.c @ 1692:1051e4eea25a
Update LibTomMath to 1.2.0 (#84)
* update C files
* update other files
* update headers
* update makefiles
* remove mp_set/get_double()
* use ltm 1.2.0 API
* update ltm_desc
* use bundled tommath if system-tommath is too old
* XMALLOC etc. were changed to MP_MALLOC etc.
author | Steffen Jaeckel <s@jaeckel.eu> |
---|---|
date | Tue, 26 May 2020 17:36:47 +0200 |
parents | 6dba84798cd5 |
children |
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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. */ /** @file ocb3_int_xor_blocks.c OCB implementation, INTERNAL ONLY helper, by Karel Miko */ #include "tomcrypt.h" #ifdef LTC_OCB3_MODE /** Compute xor for two blocks of bytes 'out = block_a XOR block_b' (internal function) @param out The block of bytes (output) @param block_a The block of bytes (input) @param block_b The block of bytes (input) @param block_len The size of block_a, block_b, out */ void ocb3_int_xor_blocks(unsigned char *out, const unsigned char *block_a, const unsigned char *block_b, unsigned long block_len) { int x; if (out == block_a) { for (x = 0; x < (int)block_len; x++) out[x] ^= block_b[x]; } else { for (x = 0; x < (int)block_len; x++) out[x] = block_a[x] ^ block_b[x]; } } #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */