/* 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 $ */