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/* $OpenBSD: cmac.h,v 1.2 2012/12/05 23:20:15 deraadt Exp $ */
/*-
* Copyright (c) 2008 Damien Bergamini <damien.bergamini@free.fr>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _CMAC_H_
#define _CMAC_H_
#define AES_CMAC_KEY_LENGTH 16
#define AES_CMAC_DIGEST_LENGTH 16
typedef struct _AES_CMAC_CTX {
rijndael_ctx rijndael;
u_int8_t X[16];
u_int8_t M_last[16];
u_int M_n;
} AES_CMAC_CTX;
__BEGIN_DECLS
void AES_CMAC_Init(AES_CMAC_CTX *);
void AES_CMAC_SetKey(AES_CMAC_CTX *, const u_int8_t [AES_CMAC_KEY_LENGTH]);
void AES_CMAC_Update(AES_CMAC_CTX *, const u_int8_t *, u_int)
__attribute__((__bounded__(__string__,2,3)));
void AES_CMAC_Final(u_int8_t [AES_CMAC_DIGEST_LENGTH], AES_CMAC_CTX *)
__attribute__((__bounded__(__minbytes__,1,AES_CMAC_DIGEST_LENGTH)));
__END_DECLS
#endif /* _CMAC_H_ */
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