Security-57740.1.18.tar.gz

[apple/security.git] / OSX / sec / Security / SecDigest.c

diff --git a/OSX/sec/Security/SecDigest.c b/OSX/sec/Security/SecDigest.c
new file mode 100644 (file)
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+++ b/OSX/sec/Security/SecDigest.c
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+/*
+ * Copyright (c) 2006-2010,2012-2015 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifdef STANDALONE
+/* Allows us to build genanchors against the BaseSDK. */
+#undef __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__
+#undef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+#endif
+
+#include "SecFramework.h"
+#include <dispatch/dispatch.h>
+#include <CommonCrypto/CommonDigest.h>
+#include <CommonCrypto/CommonDigestSPI.h>
+#include <Security/SecAsn1Coder.h>
+#include <Security/oidsalg.h>
+#include <utilities/SecCFWrappers.h>
+#include <Security/SecBase.h>
+#include <inttypes.h>
+
+/* Return the SHA1 digest of a chunk of data as newly allocated CFDataRef. */
+CFDataRef SecSHA1DigestCreate(CFAllocatorRef allocator,
+                              const UInt8 *data, CFIndex length) {
+    CFMutableDataRef digest = CFDataCreateMutable(allocator,
+                                                  CC_SHA1_DIGEST_LENGTH);
+    CFDataSetLength(digest, CC_SHA1_DIGEST_LENGTH);
+    CCDigest(kCCDigestSHA1, data, length, CFDataGetMutableBytePtr(digest));
+    return digest;
+}
+
+CFDataRef SecSHA256DigestCreate(CFAllocatorRef allocator,
+                                const UInt8 *data, CFIndex length) {
+    CFMutableDataRef digest = CFDataCreateMutable(allocator,
+                                                  CC_SHA256_DIGEST_LENGTH);
+    CFDataSetLength(digest, CC_SHA256_DIGEST_LENGTH);
+    CCDigest(kCCDigestSHA256, data, length, CFDataGetMutableBytePtr(digest));
+    return digest;
+}
+
+CFDataRef SecSHA256DigestCreateFromData(CFAllocatorRef allocator, CFDataRef data) {
+    CFMutableDataRef digest = CFDataCreateMutable(allocator,
+                                                  CC_SHA256_DIGEST_LENGTH);
+    CFDataSetLength(digest, CC_SHA256_DIGEST_LENGTH);
+    CCDigest(kCCDigestSHA256, CFDataGetBytePtr(data), CFDataGetLength(data), CFDataGetMutableBytePtr(digest));
+    return digest;
+}
+
+CFDataRef SecDigestCreate(CFAllocatorRef allocator,
+                          const SecAsn1Oid *algorithm, const SecAsn1Item *params,
+                          const UInt8 *data, CFIndex length) {
+    unsigned char *(*digestFcn)(const void *data, CC_LONG len, unsigned char *md);
+    CFIndex digestLen;
+    
+    if (length > INT32_MAX)
+        return NULL;
+    
+    if (SecAsn1OidCompare(algorithm, &CSSMOID_SHA1)) {
+        digestFcn = CC_SHA1;
+        digestLen = CC_SHA1_DIGEST_LENGTH;
+    } else if (SecAsn1OidCompare(algorithm, &CSSMOID_SHA224)) {
+        digestFcn = CC_SHA224;
+        digestLen = CC_SHA224_DIGEST_LENGTH;
+    } else if (SecAsn1OidCompare(algorithm, &CSSMOID_SHA256)) {
+        digestFcn = CC_SHA256;
+        digestLen = CC_SHA256_DIGEST_LENGTH;
+    } else if (SecAsn1OidCompare(algorithm, &CSSMOID_SHA384)) {
+        digestFcn = CC_SHA384;
+        digestLen = CC_SHA384_DIGEST_LENGTH;
+    } else if (SecAsn1OidCompare(algorithm, &CSSMOID_SHA512)) {
+        digestFcn = CC_SHA512;
+        digestLen = CC_SHA512_DIGEST_LENGTH;
+    } else {
+        return NULL;
+    }
+    
+    CFMutableDataRef digest = CFDataCreateMutable(allocator, digestLen);
+    CFDataSetLength(digest, digestLen);
+
+    digestFcn(data, (CC_LONG)length, CFDataGetMutableBytePtr(digest));
+    return digest;
+}