FreeBSD/Linux Kernel Cross Reference
sys/opencrypto/gmac.h
1 /* $OpenBSD: gmac.h,v 1.1 2010/09/22 11:54:23 mikeb Exp $ */
2
3 /*
4 * Copyright (c) 2010 Mike Belopuhov <mike@vantronix.net>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #ifndef _GMAC_H_
20 #define _GMAC_H_
21
22 #include <crypto/rijndael/rijndael.h>
23
24 #define GMAC_BLOCK_LEN 16
25 #define GMAC_DIGEST_LEN 16
26
27 typedef struct _GHASH_CTX {
28 uint8_t H[GMAC_BLOCK_LEN]; /* hash subkey */
29 uint8_t S[GMAC_BLOCK_LEN]; /* state */
30 uint8_t Z[GMAC_BLOCK_LEN]; /* initial state */
31 } GHASH_CTX;
32
33 typedef struct _AES_GMAC_CTX {
34 GHASH_CTX ghash;
35 uint32_t K[4*(RIJNDAEL_MAXNR + 1)];
36 uint8_t J[GMAC_BLOCK_LEN]; /* counter block */
37 int rounds;
38 } AES_GMAC_CTX;
39
40 #include <sys/cdefs.h>
41
42 __BEGIN_DECLS
43 void AES_GMAC_Init(AES_GMAC_CTX *);
44 void AES_GMAC_Setkey(AES_GMAC_CTX *, const uint8_t *, uint16_t);
45 void AES_GMAC_Reinit(AES_GMAC_CTX *, const uint8_t *, uint16_t);
46 int AES_GMAC_Update(AES_GMAC_CTX *, uint8_t *, uint16_t);
47 void AES_GMAC_Final(uint8_t [GMAC_DIGEST_LEN], AES_GMAC_CTX *);
48 __END_DECLS
49
50 #endif /* _GMAC_H_ */
51
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