libsecurity_cdsa_client/lib/signclient.cpp

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, 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         if (!mActive)
  33         {
  34                 check(CSSM_CSP_CreateSignatureContext(attachment()->handle(), mAlgorithm,
  35                           cred(), mKey, &mHandle));
  36                 mActive = true;
  37         }
  38 }
  39
  40
  41 //
  42 // Signing
  43 //
  44 void Sign::sign(const CssmData *data, uint32 count, CssmData &signature)
  45 {
  46         unstaged();
  47         check(CSSM_SignData(handle(), data, count, mSignOnly, &signature));
  48 }
  49
  50 void Sign::init()
  51 {
  52         check(CSSM_SignDataInit(handle()));
  53         mStaged = true;
  54 }
  55
  56 void Sign::sign(const CssmData *data, uint32 count)
  57 {
  58         staged();
  59         check(CSSM_SignDataUpdate(handle(), data, count));
  60 }
  61
  62 void Sign::operator () (CssmData &signature)
  63 {
  64         staged();
  65         check(CSSM_SignDataFinal(handle(), &signature));
  66         mStaged = false;
  67 }
  68
  69
  70 //
  71 // Verifying
  72 //
  73 void Verify::verify(const CssmData *data, uint32 count, const CssmData &signature)
  74 {
  75         unstaged();
  76         check(CSSM_VerifyData(handle(), data, count, mSignOnly, &signature));
  77 }
  78
  79 void Verify::init()
  80 {
  81         check(CSSM_VerifyDataInit(handle()));
  82         mStaged = true;
  83 }
  84
  85 void Verify::verify(const CssmData *data, uint32 count)
  86 {
  87         staged();
  88         check(CSSM_VerifyDataUpdate(handle(), data, count));
  89 }
  90
  91 void Verify::operator () (const CssmData &signature)
  92 {
  93         staged();
  94         check(CSSM_VerifyDataFinal(handle(), &signature));
  95         mStaged = false;
  96 }