diff options
Diffstat (limited to 'freebsd/sys/opencrypto/cbc_mac.h')
| -rw-r--r-- | freebsd/sys/opencrypto/cbc_mac.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/freebsd/sys/opencrypto/cbc_mac.h b/freebsd/sys/opencrypto/cbc_mac.h new file mode 100644 index 00000000..33e61cc1 --- /dev/null +++ b/freebsd/sys/opencrypto/cbc_mac.h @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2014 The FreeBSD Foundation + * Copyright (c) 2018, iXsystems Inc. + * All rights reserved. + * + * This software was developed by Sean Eric Fagan, with lots of references + * to existing AES-CCM (gmac) code. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + * + */ + +#ifndef _CBC_CCM_H +# define _CBC_CCM_H + +# include <sys/types.h> +# include <crypto/rijndael/rijndael.h> + +# define CCM_CBC_BLOCK_LEN 16 /* 128 bits */ +# define CCM_CBC_MAX_DIGEST_LEN 16 +# define CCM_CBC_MIN_DIGEST_LEN 4 + +/* + * This is the authentication context structure; + * the encryption one is similar. + */ +struct aes_cbc_mac_ctx { + uint64_t authDataLength, authDataCount; + uint64_t cryptDataLength, cryptDataCount; + int blockIndex; + uint8_t staging_block[CCM_CBC_BLOCK_LEN]; + uint8_t block[CCM_CBC_BLOCK_LEN]; + const uint8_t *nonce; + int nonceLength; /* This one is in bytes, not bits! */ + /* AES state data */ + int rounds; + uint32_t keysched[4*(RIJNDAEL_MAXNR+1)]; +}; + +void AES_CBC_MAC_Init(struct aes_cbc_mac_ctx *); +void AES_CBC_MAC_Setkey(struct aes_cbc_mac_ctx *, const uint8_t *, uint16_t); +void AES_CBC_MAC_Reinit(struct aes_cbc_mac_ctx *, const uint8_t *, uint16_t); +int AES_CBC_MAC_Update(struct aes_cbc_mac_ctx *, const uint8_t *, uint16_t); +void AES_CBC_MAC_Final(uint8_t *, struct aes_cbc_mac_ctx *); + +#endif /* _CBC_CCM_H */ |