| // SPDX-License-Identifier: BSD-2-Clause |
| /* 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_private.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 |
| |
| /* ref: $Format:%D$ */ |
| /* git commit: $Format:%H$ */ |
| /* commit time: $Format:%ai$ */ |