gmac.h revision 275732 
1/*-
2 * Copyright (c) 2014 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by John-Mark Gurney under
6 * the sponsorship of the FreeBSD Foundation and
7 * Rubicon Communications, LLC (Netgate).
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1.  Redistributions of source code must retain the above copyright
12 *     notice, this list of conditions and the following disclaimer.
13 * 2.  Redistributions in binary form must reproduce the above copyright
14 *     notice, this list of conditions and the following disclaimer in the
15 *     documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	$FreeBSD: head/sys/opencrypto/gmac.h 275732 2014-12-12 19:56:36Z jmg $
30 *
31 */
32
33#ifndef _GMAC_H_
34
35#include "gfmult.h"
36#include <crypto/rijndael/rijndael.h>
37
38#define	GMAC_BLOCK_LEN	16
39#define	GMAC_DIGEST_LEN	16
40
41struct aes_gmac_ctx {
42	struct gf128table4	ghashtbl;
43	struct gf128		hash;
44	uint32_t		keysched[4*(RIJNDAEL_MAXNR + 1)];
45	uint8_t			counter[GMAC_BLOCK_LEN];
46	int			rounds;
47};
48
49void AES_GMAC_Init(struct aes_gmac_ctx *);
50void AES_GMAC_Setkey(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
51void AES_GMAC_Reinit(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
52int AES_GMAC_Update(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
53void AES_GMAC_Final(uint8_t [GMAC_DIGEST_LEN], struct aes_gmac_ctx *);
54
55#endif /* _GMAC_H_ */
56