Certificate Transparency: Parse Signed Tree Heads and validate them

net/cert/signed_certificate_timestamp.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/cert/signed_certificate_timestamp.h"
 
 #include "base/pickle.h"
 
 namespace net {
 
@@ skipping 71 matching lines @@
 void LogEntry::Reset() {
   type = LogEntry::LOG_ENTRY_TYPE_X509;
   leaf_certificate.clear();
   tbs_certificate.clear();
 }
 
 DigitallySigned::DigitallySigned() {}
 
 DigitallySigned::~DigitallySigned() {}
 
+bool DigitallySigned::SignatureParametersMatch(
+    HashAlgorithm other_hash_algorithm,
+    SignatureAlgorithm other_signature_algorithm) const {
+  return (hash_algorithm == other_hash_algorithm) &&
+         (signature_algorithm == other_signature_algorithm);
+}
 }  // namespace ct
 
 }  // namespace net