FreeBSD/Linux Kernel Cross Reference
sys/opencrypto/gmac.h
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 * $FreeBSD$
30 *
31 */
32
33 #ifndef _GMAC_H_
34 #define _GMAC_H_
35
36 #include "gfmult.h"
37 #include <crypto/rijndael/rijndael.h>
38
39 #define GMAC_BLOCK_LEN 16
40 #define GMAC_DIGEST_LEN 16
41
42 struct aes_gmac_ctx {
43 struct gf128table4 ghashtbl;
44 struct gf128 hash;
45 uint32_t keysched[4*(RIJNDAEL_MAXNR + 1)];
46 uint8_t counter[GMAC_BLOCK_LEN];
47 int rounds;
48 };
49
50 void AES_GMAC_Init(void *);
51 void AES_GMAC_Setkey(void *, const uint8_t *, u_int);
52 void AES_GMAC_Reinit(void *, const uint8_t *, u_int);
53 int AES_GMAC_Update(void *, const void *, u_int);
54 void AES_GMAC_Final(uint8_t *, void *);
55
56 #endif /* _GMAC_H_ */
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