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
SHA256_Init(SHA256_CTX * ctx)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
SHA256_Update(SHA256_CTX * ctx,const void * data,size_t len)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
SHA256_Final(void * digest,SHA256_CTX * ctx)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, digest);
67 }
68
69 void
SHA384_Init(SHA384_CTX * ctx)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
SHA384_Update(SHA384_CTX * ctx,const void * data,size_t len)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
SHA384_Final(void * digest,SHA384_CTX * ctx)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, digest);
100 }
101
102 void
SHA512_Init(SHA512_CTX * ctx)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
SHA512_Update(SHA512_CTX * ctx,const void * data,size_t len)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
SHA512_Final(void * digest,SHA512_CTX * ctx)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, 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