1 | /* |
2 | * Copyright (c) 2012 Apple Computer, Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | |
29 | #include <libkern/crypto/crypto_internal.h> |
30 | #include <libkern/crypto/sha2.h> |
31 | #include <libkern/libkern.h> |
32 | #include <kern/debug.h> |
33 | #include <corecrypto/ccdigest.h> |
34 | |
35 | #if defined(CRYPTO_SHA2) |
36 | |
37 | void |
38 | SHA256_Init(SHA256_CTX *ctx) |
39 | { |
40 | const struct ccdigest_info *di; |
41 | di = g_crypto_funcs->ccsha256_di; |
42 | |
43 | /* Make sure the context size for the digest info fits in the one we have */ |
44 | if (ccdigest_di_size(di) > sizeof(SHA256_CTX)) { |
45 | panic("%s: inconsistent size for SHA256 context" , __FUNCTION__); |
46 | } |
47 | |
48 | g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx); |
49 | } |
50 | |
51 | void |
52 | SHA256_Update(SHA256_CTX *ctx, const void *data, size_t len) |
53 | { |
54 | const struct ccdigest_info *di; |
55 | di = g_crypto_funcs->ccsha256_di; |
56 | |
57 | g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data); |
58 | } |
59 | |
60 | void |
61 | SHA256_Final(void *digest, SHA256_CTX *ctx) |
62 | { |
63 | const struct ccdigest_info *di; |
64 | di = g_crypto_funcs->ccsha256_di; |
65 | |
66 | ccdigest_final(di, ctx: ctx->ctx, digest); |
67 | } |
68 | |
69 | void |
70 | SHA384_Init(SHA384_CTX *ctx) |
71 | { |
72 | const struct ccdigest_info *di; |
73 | di = g_crypto_funcs->ccsha384_di; |
74 | |
75 | /* Make sure the context size for the digest info fits in the one we have */ |
76 | if (ccdigest_di_size(di) > sizeof(SHA384_CTX)) { |
77 | panic("%s: inconsistent size for SHA384 context" , __FUNCTION__); |
78 | } |
79 | |
80 | g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx); |
81 | } |
82 | |
83 | void |
84 | SHA384_Update(SHA384_CTX *ctx, const void *data, size_t len) |
85 | { |
86 | const struct ccdigest_info *di; |
87 | di = g_crypto_funcs->ccsha384_di; |
88 | |
89 | g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data); |
90 | } |
91 | |
92 | |
93 | void |
94 | SHA384_Final(void *digest, SHA384_CTX *ctx) |
95 | { |
96 | const struct ccdigest_info *di; |
97 | di = g_crypto_funcs->ccsha384_di; |
98 | |
99 | ccdigest_final(di, ctx: ctx->ctx, digest); |
100 | } |
101 | |
102 | void |
103 | SHA512_Init(SHA512_CTX *ctx) |
104 | { |
105 | const struct ccdigest_info *di; |
106 | di = g_crypto_funcs->ccsha512_di; |
107 | |
108 | /* Make sure the context size for the digest info fits in the one we have */ |
109 | if (ccdigest_di_size(di) > sizeof(SHA512_CTX)) { |
110 | panic("%s: inconsistent size for SHA512 context" , __FUNCTION__); |
111 | } |
112 | |
113 | g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx); |
114 | } |
115 | |
116 | void |
117 | SHA512_Update(SHA512_CTX *ctx, const void *data, size_t len) |
118 | { |
119 | const struct ccdigest_info *di; |
120 | di = g_crypto_funcs->ccsha512_di; |
121 | |
122 | g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data); |
123 | } |
124 | |
125 | void |
126 | SHA512_Final(void *digest, SHA512_CTX *ctx) |
127 | { |
128 | const struct ccdigest_info *di; |
129 | di = g_crypto_funcs->ccsha512_di; |
130 | |
131 | ccdigest_final(di, ctx: ctx->ctx, digest); |
132 | } |
133 | |
134 | #else |
135 | |
136 | /* As these are part of the KPI, we need to stub them out for any kernel configuration that does not support SHA2. */ |
137 | |
138 | void UNSUPPORTED_API(SHA256_Init, SHA256_CTX *ctx); |
139 | void UNSUPPORTED_API(SHA384_Init, SHA384_CTX *ctx); |
140 | void UNSUPPORTED_API(SHA512_Init, SHA512_CTX *ctx); |
141 | void UNSUPPORTED_API(SHA256_Update, SHA256_CTX *ctx, const void *data, size_t len); |
142 | void UNSUPPORTED_API(SHA384_Update, SHA384_CTX *ctx, const void *data, size_t len); |
143 | void UNSUPPORTED_API(SHA512_Update, SHA512_CTX *ctx, const void *data, size_t len); |
144 | void UNSUPPORTED_API(SHA256_Final, void *digest, SHA256_CTX *ctx); |
145 | void UNSUPPORTED_API(SHA384_Final, void *digest, SHA384_CTX *ctx); |
146 | void UNSUPPORTED_API(SHA512_Final, void *digest, SHA512_CTX *ctx); |
147 | |
148 | #endif |
149 | |