1  /*
 2   * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
 3   * 
 4   * The contents of this file constitute Original Code as defined in and are
 5   * subject to the Apple Public Source License Version 1.2 (the 'License').
 6   * You may not use this file except in compliance with the License. Please obtain
 7   * a copy of the License at http://www.apple.com/publicsource and read it before
 8   * using this file.
 9   * 
10   * This Original Code and all software distributed under the License are
11   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
12   * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
13   * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
14   * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
15   * specific language governing rights and limitations under the License.
16   */
17  
18  
19  //
20  // DigestContext.h 
21  //
22  
23  #ifndef	_DIGEST_CONTEXT_H_
24  #define _DIGEST_CONTEXT_H_
25  
26  #include <security_cdsa_utilities/digestobject.h>
27  #include "AppleCSPContext.h"
28  
29  /*
30   * This is just a shim to give AppleCSPContext functionality to a 
31   * DigestObject subclass (a reference to which is passed to our constructor).
32   */
33  class DigestContext : public AppleCSPContext  {
34  public:
35  	DigestContext(
36  		AppleCSPSession &session,
37  		DigestObject &digest) : 
38  			AppleCSPContext(session), mDigest(digest) { }
39  	~DigestContext() { delete &mDigest; }
40  	
41  	void init(const Context &context, bool);
42  	void update(const CssmData &data);
43  	void final(CssmData &data);
44  	CSPFullPluginSession::CSPContext *clone(Allocator &);	// clone internal state
45  	size_t outputSize(bool, size_t);
46  
47  private:
48  	DigestObject	&mDigest;
49  };
50  
51  #endif	/* _CRYPTKIT_DIGEST_CONTEXT_H_ */