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70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
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*
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* LibTomCrypt is a library that provides various cryptographic
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* algorithms in a highly modular and flexible manner.
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*
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* The library is free for all purposes without any express
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* guarantee it works.
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*/
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#include "tomcrypt.h"
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/**
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@file xcbc_process.c
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XCBC Support, XCBC-MAC a block of memory
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*/
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#ifdef LTC_XCBC
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/** XCBC-MAC a block of memory
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@param cipher Index of cipher to use
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@param key [in] Secret key
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@param keylen Length of key in octets
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@param in [in] Message to MAC
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@param inlen Length of input in octets
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@param out [out] Destination for the MAC tag
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@param outlen [in/out] Output size and final tag size
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Return CRYPT_OK on success.
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*/
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int xcbc_memory(int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *in, unsigned long inlen,
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unsigned char *out, unsigned long *outlen)
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{
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xcbc_state *xcbc;
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int err;
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/* is the cipher valid? */
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if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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return err;
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}
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/* Use accelerator if found */
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if (cipher_descriptor[cipher].xcbc_memory != NULL) {
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return cipher_descriptor[cipher].xcbc_memory(key, keylen, in, inlen, out, outlen);
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}
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xcbc = XCALLOC(1, sizeof(*xcbc));
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if (xcbc == NULL) {
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return CRYPT_MEM;
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}
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if ((err = xcbc_init(xcbc, cipher, key, keylen)) != CRYPT_OK) {
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goto done;
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}
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if ((err = xcbc_process(xcbc, in, inlen)) != CRYPT_OK) {
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goto done;
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}
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err = xcbc_done(xcbc, out, outlen);
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done:
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XFREE(xcbc);
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return err;
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}
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#endif
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/* ref: HEAD -> master, tag: v1.18.2 */
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/* git commit: 7e7eb695d581782f04b24dc444cbfde86af59853 */
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/* commit time: 2018-07-01 22:49:01 +0200 */
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