Security-55163.44.tar.gz

[apple/security.git] / libsecurity_apple_csp / lib / DigestContext.cpp

diff --git a/libsecurity_apple_csp/lib/DigestContext.cpp b/libsecurity_apple_csp/lib/DigestContext.cpp
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+++ b/libsecurity_apple_csp/lib/DigestContext.cpp
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+/*
+ * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
+ * 
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ * 
+ * This 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.
+ */
+
+
+//
+// DigestContext.cpp 
+//
+#include "DigestContext.h"
+#include <AppleCSPUtils.h>
+
+/* 
+ * Just field the expected/required calls from CSPFullPluginSession,
+ * and dispatch them to mDigest.
+ */
+void DigestContext::init(const Context &context, bool)
+{
+       mDigest.digestInit();
+}
+
+void DigestContext::update(const CssmData &data)
+{
+       mDigest.digestUpdate((const uint8 *)data.data(), data.length());
+}
+
+void DigestContext::final(CssmData &data)
+{
+       data.length(mDigest.digestSizeInBytes());
+       mDigest.digestFinal((uint8 *)data.data());
+}
+
+CSPFullPluginSession::CSPContext *DigestContext::clone(Allocator &)
+{
+       /* first clone the low-level digest object */
+       DigestObject *newDigest = mDigest.digestClone();
+       
+       /* now construct a new context */
+       return new DigestContext(session(), *newDigest);
+}
+
+size_t DigestContext::outputSize(bool, size_t) 
+{
+       return mDigest.digestSizeInBytes();
+}
+