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     StLock<Mutex> _(mActivateMutex);
  33         if (!mActive)
  34         {
  35                 check(CSSM_CSP_CreateMacContext(attachment()->handle(), mAlgorithm,
  36                           mKey, &mHandle));
  37                 mActive = true;
  38                 if (cred())
  39                         cred(cred());           // install explicitly
  40         }
  41 }
  42
  43
  44 //
  45 // Signing
  46 //
  47 void GenerateMac::sign(const CssmData *data, uint32 count, CssmData &mac)
  48 {
  49         unstaged();
  50         check(CSSM_GenerateMac(handle(), data, count, &mac));
  51 }
  52
  53 void GenerateMac::init()
  54 {
  55         check(CSSM_GenerateMacInit(handle()));
  56         mStaged = true;
  57 }
  58
  59 void GenerateMac::sign(const CssmData *data, uint32 count)
  60 {
  61         staged();
  62         check(CSSM_GenerateMacUpdate(handle(), data, count));
  63 }
  64
  65 void GenerateMac::operator () (CssmData &mac)
  66 {
  67         staged();
  68         check(CSSM_GenerateMacFinal(handle(), &mac));
  69         mStaged = false;
  70 }
  71
  72
  73 //
  74 // Verifying
  75 //
  76 void VerifyMac::verify(const CssmData *data, uint32 count, const CssmData &mac)
  77 {
  78         unstaged();
  79         check(CSSM_VerifyMac(handle(), data, count, &mac));
  80 }
  81
  82 void VerifyMac::init()
  83 {
  84         check(CSSM_VerifyMacInit(handle()));
  85         mStaged = true;
  86 }
  87
  88 void VerifyMac::verify(const CssmData *data, uint32 count)
  89 {
  90         staged();
  91         check(CSSM_VerifyMacUpdate(handle(), data, count));
  92 }
  93
  94 void VerifyMac::operator () (const CssmData &mac)
  95 {
  96         staged();
  97         check(CSSM_VerifyMacFinal(handle(), &mac));
  98         mStaged = false;
  99 }