libkern/crypto/corecrypto_sha2.c

   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 <kern/debug.h>
  32 #include <corecrypto/ccdigest.h>
  33
  34 #if defined(CRYPTO_SHA2)
  35
  36 void SHA256_Init(SHA256_CTX *ctx)
  37 {
  38         const struct ccdigest_info *di;
  39         di=g_crypto_funcs->ccsha256_di;
  40
  41         /* Make sure the context size for the digest info fits in the one we have */
  42         if(ccdigest_di_size(di)>sizeof(SHA256_CTX))
  43                 panic("%s: inconsistent size for SHA256 context", __FUNCTION__);
  44
  45         g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx);
  46 }
  47
  48 void SHA256_Update(SHA256_CTX *ctx, const void *data, size_t len)
  49 {
  50         const struct ccdigest_info *di;
  51         di=g_crypto_funcs->ccsha256_di;
  52
  53         g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data);
  54 }
  55
  56 void SHA256_Final(void *digest, SHA256_CTX *ctx)
  57 {
  58         const struct ccdigest_info *di;
  59         di=g_crypto_funcs->ccsha256_di;
  60
  61         ccdigest_final(di, ctx->ctx, digest);
  62 }
  63
  64 void SHA384_Init(SHA384_CTX *ctx)
  65 {
  66         const struct ccdigest_info *di;
  67         di=g_crypto_funcs->ccsha384_di;
  68
  69         /* Make sure the context size for the digest info fits in the one we have */
  70         if(ccdigest_di_size(di)>sizeof(SHA384_CTX))
  71                 panic("%s: inconsistent size for SHA384 context", __FUNCTION__);
  72
  73         g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx);
  74 }
  75
  76 void SHA384_Update(SHA384_CTX *ctx, const void *data, size_t len)
  77 {
  78         const struct ccdigest_info *di;
  79         di=g_crypto_funcs->ccsha384_di;
  80
  81         g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data);
  82 }
  83
  84
  85 void SHA384_Final(void *digest, SHA384_CTX *ctx)
  86 {
  87         const struct ccdigest_info *di;
  88         di=g_crypto_funcs->ccsha384_di;
  89
  90         ccdigest_final(di, ctx->ctx, digest);
  91 }
  92
  93 void SHA512_Init(SHA512_CTX *ctx)
  94 {
  95         const struct ccdigest_info *di;
  96         di=g_crypto_funcs->ccsha512_di;
  97
  98         /* Make sure the context size for the digest info fits in the one we have */
  99         if(ccdigest_di_size(di)>sizeof(SHA512_CTX))
 100                 panic("%s: inconsistent size for SHA512 context", __FUNCTION__);
 101
 102         g_crypto_funcs->ccdigest_init_fn(di, ctx->ctx);
 103 }
 104
 105 void SHA512_Update(SHA512_CTX *ctx, const void *data, size_t len)
 106 {
 107         const struct ccdigest_info *di;
 108         di=g_crypto_funcs->ccsha512_di;
 109
 110         g_crypto_funcs->ccdigest_update_fn(di, ctx->ctx, len, data);
 111 }
 112
 113 void SHA512_Final(void *digest, SHA512_CTX *ctx)
 114 {
 115         const struct ccdigest_info *di;
 116         di=g_crypto_funcs->ccsha512_di;
 117
 118         ccdigest_final(di, ctx->ctx, digest);
 119 }
 120
 121 #else
 122
 123 /* As these are part of the KPI, we need to stub them out for any kernle cofiguration that does not support SHA2. */
 124
 125 void SHA384_Init(__unused SHA384_CTX *ctx)
 126 {
 127         panic("SHA384_Init");
 128 }
 129
 130 void SHA384_Update(__unused SHA384_CTX *ctx, __unused const void *data, __unused size_t len)
 131 {
 132         panic("SHA384_Update");
 133 }
 134
 135 void SHA384_Final(__unused void *digest, __unused SHA384_CTX *ctx)
 136 {
 137         panic("SHA384_Final");
 138 }
 139
 140 #endif
 141