OSX/libsecurity_cdsa_client/lib/signclient.cpp

   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 }