libsecurity_cdsa_client/lib/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_cdsa_client/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                 if (cred())
  38                         cred(cred());           // install explicitly
  39         }
  40 }
  41
  42
  43 //
  44 // Signing
  45 //
  46 void GenerateMac::sign(const CssmData *data, uint32 count, CssmData &mac)
  47 {
  48         unstaged();
  49         check(CSSM_GenerateMac(handle(), data, count, &mac));
  50 }
  51
  52 void GenerateMac::init()
  53 {
  54         check(CSSM_GenerateMacInit(handle()));
  55         mStaged = true;
  56 }
  57
  58 void GenerateMac::sign(const CssmData *data, uint32 count)
  59 {
  60         staged();
  61         check(CSSM_GenerateMacUpdate(handle(), data, count));
  62 }
  63
  64 void GenerateMac::operator () (CssmData &mac)
  65 {
  66         staged();
  67         check(CSSM_GenerateMacFinal(handle(), &mac));
  68         mStaged = false;
  69 }
  70
  71
  72 //
  73 // Verifying
  74 //
  75 void VerifyMac::verify(const CssmData *data, uint32 count, const CssmData &mac)
  76 {
  77         unstaged();
  78         check(CSSM_VerifyMac(handle(), data, count, &mac));
  79 }
  80
  81 void VerifyMac::init()
  82 {
  83         check(CSSM_VerifyMacInit(handle()));
  84         mStaged = true;
  85 }
  86
  87 void VerifyMac::verify(const CssmData *data, uint32 count)
  88 {
  89         staged();
  90         check(CSSM_VerifyMacUpdate(handle(), data, count));
  91 }
  92
  93 void VerifyMac::operator () (const CssmData &mac)
  94 {
  95         staged();
  96         check(CSSM_VerifyMacFinal(handle(), &mac));
  97         mStaged = false;
  98 }