| // 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" |
| |
| #ifdef LTC_BLAKE2BMAC |
| |
| /** |
| Initialize an BLAKE2B MAC context. |
| @param st The BLAKE2B MAC state |
| @param outlen The size of the MAC output (octets) |
| @param key The secret key |
| @param keylen The length of the secret key (octets) |
| @return CRYPT_OK if successful |
| */ |
| int blake2bmac_init(blake2bmac_state *st, unsigned long outlen, const unsigned char *key, unsigned long keylen) |
| { |
| LTC_ARGCHK(st != NULL); |
| LTC_ARGCHK(key != NULL); |
| return blake2b_init(st, outlen, key, keylen); |
| } |
| |
| /** |
| Process data through BLAKE2B MAC |
| @param st The BLAKE2B MAC state |
| @param in The data to send through HMAC |
| @param inlen The length of the data to HMAC (octets) |
| @return CRYPT_OK if successful |
| */ |
| int blake2bmac_process(blake2bmac_state *st, const unsigned char *in, unsigned long inlen) |
| { |
| if (inlen == 0) return CRYPT_OK; /* nothing to do */ |
| LTC_ARGCHK(st != NULL); |
| LTC_ARGCHK(in != NULL); |
| return blake2b_process(st, in, inlen); |
| } |
| |
| /** |
| Terminate a BLAKE2B MAC session |
| @param st The BLAKE2B MAC state |
| @param mac [out] The destination of the BLAKE2B MAC authentication tag |
| @param maclen [in/out] The max size and resulting size of the BLAKE2B MAC authentication tag |
| @return CRYPT_OK if successful |
| */ |
| int blake2bmac_done(blake2bmac_state *st, unsigned char *mac, unsigned long *maclen) |
| { |
| LTC_ARGCHK(st != NULL); |
| LTC_ARGCHK(mac != NULL); |
| LTC_ARGCHK(maclen != NULL); |
| LTC_ARGCHK(*maclen >= st->blake2b.outlen); |
| |
| *maclen = st->blake2b.outlen; |
| return blake2b_done(st, mac); |
| } |
| |
| #endif |
| |
| /* ref: $Format:%D$ */ |
| /* git commit: $Format:%H$ */ |
| /* commit time: $Format:%ai$ */ |