view libtomcrypt/src/mac/xcbc/xcbc_memory.c @ 1938:77bc00dcc19f default tip main master

Bump version to 2022.82
author Matt Johnston <>
date Fri, 01 Apr 2022 14:43:27 +0800
parents 6dba84798cd5
line wrap: on
line source
/* 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.
#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);
   return err;


/* ref:         $Format:%D$ */
/* git commit:  $Format:%H$ */
/* commit time: $Format:%ai$ */