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
37void SHA256_Init(SHA256_CTX *ctx)
38{
39 const struct ccdigest_info *di;
40 di=g_crypto_funcs->ccsha256_di;
41
42 /* Make sure the context size for the digest info fits in the one we have */
43 if(ccdigest_di_size(di)>sizeof(SHA256_CTX))
44 panic("%s: inconsistent size for SHA256 context", __FUNCTION__);
45
46 g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx);
47}
48
49void SHA256_Update(SHA256_CTX *ctx, const void *data, size_t len)
50{
51 const struct ccdigest_info *di;
52 di=g_crypto_funcs->ccsha256_di;
53
54 g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data);
55}
56
57void SHA256_Final(void *digest, SHA256_CTX *ctx)
58{
59 const struct ccdigest_info *di;
60 di=g_crypto_funcs->ccsha256_di;
61
62 ccdigest_final(di, ctx->ctx, digest);
63}
64
65void SHA384_Init(SHA384_CTX *ctx)
66{
67 const struct ccdigest_info *di;
68 di=g_crypto_funcs->ccsha384_di;
69
70 /* Make sure the context size for the digest info fits in the one we have */
71 if(ccdigest_di_size(di)>sizeof(SHA384_CTX))
72 panic("%s: inconsistent size for SHA384 context", __FUNCTION__);
73
74 g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx);
75}
76
77void SHA384_Update(SHA384_CTX *ctx, const void *data, size_t len)
78{
79 const struct ccdigest_info *di;
80 di=g_crypto_funcs->ccsha384_di;
81
82 g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data);
83}
84
85
86void SHA384_Final(void *digest, SHA384_CTX *ctx)
87{
88 const struct ccdigest_info *di;
89 di=g_crypto_funcs->ccsha384_di;
90
91 ccdigest_final(di, ctx->ctx, digest);
92}
93
94void SHA512_Init(SHA512_CTX *ctx)
95{
96 const struct ccdigest_info *di;
97 di=g_crypto_funcs->ccsha512_di;
98
99 /* Make sure the context size for the digest info fits in the one we have */
100 if(ccdigest_di_size(di)>sizeof(SHA512_CTX))
101 panic("%s: inconsistent size for SHA512 context", __FUNCTION__);
102
103 g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx);
104}
105
106void SHA512_Update(SHA512_CTX *ctx, const void *data, size_t len)
107{
108 const struct ccdigest_info *di;
109 di=g_crypto_funcs->ccsha512_di;
110
111 g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data);
112}
113
114void SHA512_Final(void *digest, SHA512_CTX *ctx)
115{
116 const struct ccdigest_info *di;
117 di=g_crypto_funcs->ccsha512_di;
118
119 ccdigest_final(di, ctx->ctx, digest);
120}
121
122#else
123
124/* As these are part of the KPI, we need to stub them out for any kernel configuration that does not support SHA2. */
125
126void UNSUPPORTED_API(SHA256_Init, SHA256_CTX *ctx);
127void UNSUPPORTED_API(SHA384_Init, SHA384_CTX *ctx);
128void UNSUPPORTED_API(SHA512_Init, SHA512_CTX *ctx);
129void UNSUPPORTED_API(SHA256_Update, SHA256_CTX *ctx, const void *data, size_t len);
130void UNSUPPORTED_API(SHA384_Update, SHA384_CTX *ctx, const void *data, size_t len);
131void UNSUPPORTED_API(SHA512_Update, SHA512_CTX *ctx, const void *data, size_t len);
132void UNSUPPORTED_API(SHA256_Final, void *digest, SHA256_CTX *ctx);
133void UNSUPPORTED_API(SHA384_Final, void *digest, SHA384_CTX *ctx);
134void UNSUPPORTED_API(SHA512_Final, void *digest, SHA512_CTX *ctx);
135
136#endif
137
138