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/*-
* Copyright (c) 2014 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by John-Mark Gurney under
* the sponsorship of the FreeBSD Foundation and
* Rubicon Communications, LLC (Netgate).
* 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 _GMAC_H_
#define _GMAC_H_
#include "gfmult.h"
#include <crypto/rijndael/rijndael.h>
#define GMAC_BLOCK_LEN 16
#define GMAC_DIGEST_LEN 16
struct aes_gmac_ctx {
struct gf128table4 ghashtbl;
struct gf128 hash;
uint32_t keysched[4*(RIJNDAEL_MAXNR + 1)];
uint8_t counter[GMAC_BLOCK_LEN];
int rounds;
};
void AES_GMAC_Init(struct aes_gmac_ctx *);
void AES_GMAC_Setkey(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
void AES_GMAC_Reinit(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
int AES_GMAC_Update(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
void AES_GMAC_Final(uint8_t [GMAC_DIGEST_LEN], struct aes_gmac_ctx *);
#endif /* _GMAC_H_ */
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