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Diffstat (limited to 'lib/crypto/aes_cmac_128.h')
| -rw-r--r-- | lib/crypto/aes_cmac_128.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/lib/crypto/aes_cmac_128.h b/lib/crypto/aes_cmac_128.h new file mode 100644 index 0000000..9bcf951 --- /dev/null +++ b/lib/crypto/aes_cmac_128.h @@ -0,0 +1,47 @@ +/* + AES-CMAC-128 (rfc 4493) + Copyright (C) Stefan Metzmacher 2012 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef LIB_CRYPTO_AES_CMAC_128_H +#define LIB_CRYPTO_AES_CMAC_128_H + +struct aes_cmac_128_context { + AES_KEY aes_key; + + uint64_t __align; + + uint8_t K1[AES_BLOCK_SIZE]; + uint8_t K2[AES_BLOCK_SIZE]; + + uint8_t L[AES_BLOCK_SIZE]; + uint8_t X[AES_BLOCK_SIZE]; + uint8_t Y[AES_BLOCK_SIZE]; + + uint8_t tmp[AES_BLOCK_SIZE]; + + uint8_t last[AES_BLOCK_SIZE]; + size_t last_len; +}; + +void aes_cmac_128_init(struct aes_cmac_128_context *ctx, + const uint8_t K[AES_BLOCK_SIZE]); +void aes_cmac_128_update(struct aes_cmac_128_context *ctx, + const uint8_t *_msg, size_t _msg_len); +void aes_cmac_128_final(struct aes_cmac_128_context *ctx, + uint8_t T[AES_BLOCK_SIZE]); + +#endif /* LIB_CRYPTO_AES_CMAC_128_H */ |