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