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1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
22 | * Copyright 2009 Sun Microsystems, Inc. All rights reserved. | |
23 | * Use is subject to license terms. | |
24 | */ | |
25 | /* Copyright 2013 Saso Kiselkov. All rights reserved. */ | |
26 | ||
27 | #ifndef _SYS_SHA2_H | |
28 | #define _SYS_SHA2_H | |
29 | ||
30 | #include <sys/types.h> /* for uint_* */ | |
31 | ||
32 | #ifdef __cplusplus | |
33 | extern "C" { | |
34 | #endif | |
35 | ||
36 | #define SHA2_HMAC_MIN_KEY_LEN 1 /* SHA2-HMAC min key length in bytes */ | |
37 | #define SHA2_HMAC_MAX_KEY_LEN INT_MAX /* SHA2-HMAC max key length in bytes */ | |
38 | ||
39 | #define SHA256_DIGEST_LENGTH 32 /* SHA256 digest length in bytes */ | |
40 | ||
41 | #define SHA256_HMAC_BLOCK_SIZE 64 /* SHA256-HMAC block size */ | |
42 | ||
43 | #define SHA256 0 | |
44 | #define SHA256_HMAC 1 | |
45 | #define SHA256_HMAC_GEN 2 | |
46 | ||
47 | /* | |
48 | * SHA2 context. | |
49 | * The contents of this structure are a private interface between the | |
50 | * Init/Update/Final calls of the functions defined below. | |
51 | * Callers must never attempt to read or write any of the fields | |
52 | * in this structure directly. | |
53 | */ | |
54 | typedef struct { | |
55 | uint32_t algotype; /* Algorithm Type */ | |
56 | ||
57 | /* state (ABCDEFGH) */ | |
58 | union { | |
59 | uint32_t s32[8]; /* for SHA256 */ | |
60 | uint64_t s64[8]; /* for SHA384/512 */ | |
61 | } state; | |
62 | /* number of bits */ | |
63 | union { | |
64 | uint32_t c32[2]; /* for SHA256 , modulo 2^64 */ | |
65 | uint64_t c64[2]; /* for SHA384/512, modulo 2^128 */ | |
66 | } count; | |
67 | union { | |
68 | uint8_t buf8[128]; /* undigested input */ | |
69 | uint32_t buf32[32]; /* realigned input */ | |
70 | uint64_t buf64[16]; /* realigned input */ | |
71 | } buf_un; | |
72 | } SHA2_CTX; | |
73 | ||
74 | typedef SHA2_CTX SHA256_CTX; | |
75 | typedef SHA2_CTX SHA384_CTX; | |
76 | typedef SHA2_CTX SHA512_CTX; | |
77 | ||
78 | extern void SHA2Init(uint64_t mech, SHA2_CTX *); | |
79 | ||
80 | extern void SHA2Update(SHA2_CTX *, const void *, size_t); | |
81 | ||
82 | extern void SHA2Final(void *, SHA2_CTX *); | |
83 | ||
84 | extern void SHA256Init(SHA256_CTX *); | |
85 | ||
86 | extern void SHA256Update(SHA256_CTX *, const void *, size_t); | |
87 | ||
88 | extern void SHA256Final(void *, SHA256_CTX *); | |
89 | ||
90 | #ifdef _SHA2_IMPL | |
91 | /* | |
92 | * The following types/functions are all private to the implementation | |
93 | * of the SHA2 functions and must not be used by consumers of the interface | |
94 | */ | |
95 | ||
96 | /* | |
97 | * List of support mechanisms in this module. | |
98 | * | |
99 | * It is important to note that in the module, division or modulus calculations | |
100 | * are used on the enumerated type to determine which mechanism is being used; | |
101 | * therefore, changing the order or additional mechanisms should be done | |
102 | * carefully | |
103 | */ | |
104 | typedef enum sha2_mech_type { | |
105 | SHA256_MECH_INFO_TYPE, /* SUN_CKM_SHA256 */ | |
106 | SHA256_HMAC_MECH_INFO_TYPE, /* SUN_CKM_SHA256_HMAC */ | |
107 | SHA256_HMAC_GEN_MECH_INFO_TYPE, /* SUN_CKM_SHA256_HMAC_GENERAL */ | |
108 | } sha2_mech_type_t; | |
109 | ||
110 | #endif /* _SHA2_IMPL */ | |
111 | ||
112 | #ifdef __cplusplus | |
113 | } | |
114 | #endif | |
115 | ||
116 | #endif /* _SYS_SHA2_H */ |