X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/5dd5f9ec28f304ca377c42fd7f711d6cf12b90e1..5c19dc3ae3bd8e40a9c028b0deddd50ff337692c:/OSX/include/security_utilities/hashing.cpp

diff --git a/OSX/include/security_utilities/hashing.cpp b/OSX/include/security_utilities/hashing.cpp
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+++ b/OSX/include/security_utilities/hashing.cpp
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+/*
+ * Copyright (c) 2005-2011 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@
+ */
+
+//
+// Fast hasing support
+//
+#include "hashing.h"
+#include "unix++.h"
+
+
+namespace Security {
+
+
+//
+// Basic DynamicHash infrastructure
+//
+DynamicHash::~DynamicHash()
+{
+	// virtual
+}
+
+
+//
+// CommonCrypto-based DynamicHash instances
+//
+CCHashInstance::CCHashInstance(CCDigestAlg alg, size_t truncate)
+{
+	if (!(mDigest = CCDigestCreate(alg)))
+		UnixError::throwMe(ENOMEM);
+	mTruncate = truncate;
+}
+	
+void CCHashInstance::finish(unsigned char *digest)
+{
+	if (mTruncate == 0) {
+	 	CCDigestFinal(mDigest, digest);
+	} else {
+		unsigned char fullDigest[CCDigestOutputSize(mDigest)];
+		CCDigestFinal(mDigest, fullDigest);
+		memcpy(digest, fullDigest, mTruncate);
+	}
+}
+
+
+
+}	// Security