1  /*
 2   * Copyright (c) 2000-2001,2011-2012,2014 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  // signclient - client interface to CSSM sign/verify contexts
21  //
22  #include <security_cdsa_client/signclient.h>
23  
24  using namespace CssmClient;
25  
26  
27  //
28  // Common features of signing and verify contexts
29  //
30  void SigningContext::activate()
31  {
32      StLock<Mutex> _(mActivateMutex);
33  	if (!mActive)
34  	{
35  		check(CSSM_CSP_CreateSignatureContext(attachment()->handle(), mAlgorithm,
36  			  cred(), mKey, &mHandle));
37  		mActive = true;
38  	}
39  }
40  
41  
42  //
43  // Signing
44  //
45  void Sign::sign(const CssmData *data, uint32 count, CssmData &signature)
46  {
47  	unstaged();
48  	check(CSSM_SignData(handle(), data, count, mSignOnly, &signature));
49  }
50  
51  void Sign::init()
52  {
53  	check(CSSM_SignDataInit(handle()));
54  	mStaged = true;
55  }
56  
57  void Sign::sign(const CssmData *data, uint32 count)
58  {
59  	staged();
60  	check(CSSM_SignDataUpdate(handle(), data, count));
61  }
62  
63  void Sign::operator () (CssmData &signature)
64  {
65  	staged();
66  	check(CSSM_SignDataFinal(handle(), &signature));
67  	mStaged = false;
68  }
69  
70  
71  //
72  // Verifying
73  //
74  void Verify::verify(const CssmData *data, uint32 count, const CssmData &signature)
75  {
76  	unstaged();
77  	check(CSSM_VerifyData(handle(), data, count, mSignOnly, &signature));
78  }
79  
80  void Verify::init()
81  {
82  	check(CSSM_VerifyDataInit(handle()));
83  	mStaged = true;
84  }
85  
86  void Verify::verify(const CssmData *data, uint32 count)
87  {
88  	staged();
89  	check(CSSM_VerifyDataUpdate(handle(), data, count));
90  }
91  
92  void Verify::operator () (const CssmData &signature)
93  {
94  	staged();
95  	check(CSSM_VerifyDataFinal(handle(), &signature));
96  	mStaged = false;
97  }