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author | Stefan Metzmacher <metze@samba.org> | 2012-02-18 11:47:31 +0100 |
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committer | Stefan Metzmacher <metze@samba.org> | 2012-02-29 03:16:22 +0100 |
commit | 062d1a09c2ef5efcdb85c77d7d27109b1317b46c (patch) | |
tree | ba9e60ebe55295cfae132ed55377bd5e555bdeaf /lib/crypto/aes_cmac_128.h | |
parent | de870e979b1082ffd4d88350dfd4e073bd5d0789 (diff) | |
download | samba-062d1a09c2ef5efcdb85c77d7d27109b1317b46c.tar.gz samba-062d1a09c2ef5efcdb85c77d7d27109b1317b46c.tar.bz2 samba-062d1a09c2ef5efcdb85c77d7d27109b1317b46c.zip |
lib/crypto: add aes_cmac_128* (rfc 4493)
Thanks to Jeremy, Michael and Volker for the debugging!
metze
Diffstat (limited to 'lib/crypto/aes_cmac_128.h')
-rw-r--r-- | lib/crypto/aes_cmac_128.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/crypto/aes_cmac_128.h b/lib/crypto/aes_cmac_128.h new file mode 100644 index 0000000000..28117a06b3 --- /dev/null +++ b/lib/crypto/aes_cmac_128.h @@ -0,0 +1,41 @@ +/* + 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; + + uint8_t K1[AES_BLOCK_SIZE]; + uint8_t K2[AES_BLOCK_SIZE]; + + uint8_t X[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 */ |