?? xcbc_memory.c
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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 */#include "tomcrypt.h"/** @file xcbc_process.c XCBC Support, XCBC-MAC a block of memory*/#ifdef LTC_XCBC/** XCBC-MAC a block of memory @param cipher Index of cipher to use @param key [in] Secret key @param keylen Length of key in octets @param in [in] Message to MAC @param inlen Length of input in octets @param out [out] Destination for the MAC tag @param outlen [in/out] Output size and final tag size Return CRYPT_OK on success.*/int xcbc_memory(int cipher, const unsigned char *key, unsigned long keylen, const unsigned char *in, unsigned long inlen, unsigned char *out, unsigned long *outlen){ xcbc_state *xcbc; int err; /* is the cipher valid? */ if ((err = cipher_is_valid(cipher)) != CRYPT_OK) { return err; } /* Use accelerator if found */ if (cipher_descriptor[cipher].xcbc_memory != NULL) { return cipher_descriptor[cipher].xcbc_memory(key, keylen, in, inlen, out, outlen); } xcbc = XCALLOC(1, sizeof(*xcbc)); if (xcbc == NULL) { return CRYPT_MEM; } if ((err = xcbc_init(xcbc, cipher, key, keylen)) != CRYPT_OK) { goto done; } if ((err = xcbc_process(xcbc, in, inlen)) != CRYPT_OK) { goto done; } err = xcbc_done(xcbc, out, outlen);done: XFREE(xcbc); return err;}#endif/* $Source: /cvs/libtom/libtomcrypt/src/mac/xcbc/xcbc_memory.c,v $ *//* $Revision: 1.4 $ *//* $Date: 2006/11/21 23:02:42 $ */
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