1 | /* $NetBSD: gmac.h,v 1.2 2011/06/09 14:47:42 drochner Exp $ */ |
2 | /* OpenBSD: gmac.h,v 1.1 2010/09/22 11:54:23 mikeb Exp */ |
3 | |
4 | /* |
5 | * Copyright (c) 2010 Mike Belopuhov <mike@vantronix.net> |
6 | * |
7 | * Permission to use, copy, modify, and distribute this software for any |
8 | * purpose with or without fee is hereby granted, provided that the above |
9 | * copyright notice and this permission notice appear in all copies. |
10 | * |
11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
18 | */ |
19 | |
20 | #ifndef _GMAC_H_ |
21 | #define _GMAC_H_ |
22 | |
23 | #include <crypto/rijndael/rijndael.h> |
24 | |
25 | #define GMAC_BLOCK_LEN 16 |
26 | #define GMAC_DIGEST_LEN 16 |
27 | |
28 | #ifdef _LP64 |
29 | #define GMAC_INT uint64_t |
30 | #define GMAC_INTLEN 8 |
31 | #else |
32 | #define GMAC_INT uint32_t |
33 | #define GMAC_INTLEN 4 |
34 | #endif |
35 | |
36 | typedef struct _GHASH_CTX { |
37 | GMAC_INT H[GMAC_BLOCK_LEN/GMAC_INTLEN]; /* hash subkey */ |
38 | GMAC_INT S[GMAC_BLOCK_LEN/GMAC_INTLEN]; /* state */ |
39 | GMAC_INT Z[GMAC_BLOCK_LEN/GMAC_INTLEN]; /* initial state */ |
40 | } GHASH_CTX; |
41 | |
42 | typedef struct _AES_GMAC_CTX { |
43 | GHASH_CTX ghash; |
44 | uint32_t K[4*(RIJNDAEL_MAXNR + 1)]; |
45 | uint8_t J[GMAC_BLOCK_LEN]; /* counter block */ |
46 | int rounds; |
47 | } AES_GMAC_CTX; |
48 | |
49 | #include <sys/cdefs.h> |
50 | |
51 | __BEGIN_DECLS |
52 | void AES_GMAC_Init(AES_GMAC_CTX *); |
53 | void AES_GMAC_Setkey(AES_GMAC_CTX *, const uint8_t *, uint16_t); |
54 | void AES_GMAC_Reinit(AES_GMAC_CTX *, const uint8_t *, uint16_t); |
55 | int AES_GMAC_Update(AES_GMAC_CTX *, const uint8_t *, uint16_t); |
56 | void AES_GMAC_Final(uint8_t [GMAC_DIGEST_LEN], AES_GMAC_CTX *); |
57 | __END_DECLS |
58 | |
59 | #endif /* _GMAC_H_ */ |
60 | |