Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_apple_csp / lib / DigestContext.h

diff --git a/Security/libsecurity_apple_csp/lib/DigestContext.h b/Security/libsecurity_apple_csp/lib/DigestContext.h
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+/*
+ * Copyright (c) 2000-2001,2011,2014 Apple 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.h 
+//
+
+#ifndef        _DIGEST_CONTEXT_H_
+#define _DIGEST_CONTEXT_H_
+
+#include <security_cdsa_utilities/digestobject.h>
+#include "AppleCSPContext.h"
+
+/*
+ * This is just a shim to give AppleCSPContext functionality to a 
+ * DigestObject subclass (a reference to which is passed to our constructor).
+ */
+class DigestContext : public AppleCSPContext  {
+public:
+       DigestContext(
+               AppleCSPSession &session,
+               DigestObject &digest) : 
+                       AppleCSPContext(session), mDigest(digest) { }
+       ~DigestContext() { delete &mDigest; }
+       
+       void init(const Context &context, bool);
+       void update(const CssmData &data);
+       void final(CssmData &data);
+       CSPFullPluginSession::CSPContext *clone(Allocator &);   // clone internal state
+       size_t outputSize(bool, size_t);
+
+private:
+       DigestObject    &mDigest;
+};
+
+#endif /* _CRYPTKIT_DIGEST_CONTEXT_H_ */