lib/csutilities.cpp

   1 /*
   2  * Copyright (c) 2006-2007 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 //
  25 // csutilities - miscellaneous utilities for the code signing implementation
  26 //
  27 #include "csutilities.h"
  28 #include <security_codesigning/requirement.h>
  29 #include <security_utilities/debugging.h>
  30 #include <security_utilities/errors.h>
  31
  32 namespace Security {
  33 namespace CodeSigning {
  34
  35
  36 //
  37 // Calculate the canonical hash of a certificate, given its raw (DER) data.
  38 //
  39 void hashOfCertificate(const void *certData, size_t certLength, SHA1::Digest digest)
  40 {
  41         SHA1 hasher;
  42         hasher(certData, certLength);
  43         hasher.finish(digest);
  44 }
  45
  46
  47 //
  48 // Ditto, given a SecCertificateRef
  49 //
  50 void hashOfCertificate(SecCertificateRef cert, SHA1::Digest digest)
  51 {
  52         assert(cert);
  53         CSSM_DATA certData;
  54         MacOSError::check(SecCertificateGetData(cert, &certData));
  55         hashOfCertificate(certData.Data, certData.Length, digest);
  56 }
  57
  58
  59 } // end namespace CodeSigning
  60 } // end namespace Security