cdsa/cdsa_client/macclient.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 // macclient - client interface to CSSM sign/verify mac contexts
  21 //
  22 #include <Security/macclient.h>
  23
  24 using namespace CssmClient;
  25
  26
  27 //
  28 // Common features of signing and verify mac contexts
  29 //
  30 void MacContext::activate()
  31 {
  32         if (!mActive)
  33         {
  34                 check(CSSM_CSP_CreateMacContext(attachment()->handle(), mAlgorithm,
  35                           mKey, &mHandle));
  36                 mActive = true;
  37         }
  38 }
  39
  40 //
  41 // Signing
  42 //
  43 void GenerateMac::sign(const CssmData *data, uint32 count, CssmData &mac)
  44 {
  45         unstaged();
  46         check(CSSM_GenerateMac(handle(), data, count, &mac));
  47 }
  48
  49 void GenerateMac::init()
  50 {
  51         check(CSSM_GenerateMacInit(handle()));
  52         mStaged = true;
  53 }
  54
  55 void GenerateMac::sign(const CssmData *data, uint32 count)
  56 {
  57         staged();
  58         check(CSSM_GenerateMacUpdate(handle(), data, count));
  59 }
  60
  61 void GenerateMac::operator () (CssmData &mac)
  62 {
  63         staged();
  64         check(CSSM_GenerateMacFinal(handle(), &mac));
  65         mStaged = false;
  66 }
  67
  68
  69 //
  70 // Verifying
  71 //
  72 void VerifyMac::verify(const CssmData *data, uint32 count, const CssmData &mac)
  73 {
  74         unstaged();
  75         check(CSSM_VerifyMac(handle(), data, count, &mac));
  76 }
  77
  78 void VerifyMac::init()
  79 {
  80         check(CSSM_VerifyMacInit(handle()));
  81         mStaged = true;
  82 }
  83
  84 void VerifyMac::verify(const CssmData *data, uint32 count)
  85 {
  86         staged();
  87         check(CSSM_VerifyMacUpdate(handle(), data, count));
  88 }
  89
  90 void VerifyMac::operator () (const CssmData &mac)
  91 {
  92         staged();
  93         check(CSSM_VerifyMacFinal(handle(), &mac));
  94         mStaged = false;
  95 }