Cast device revocation checking.

components/cast_certificate/cast_cert_validator.cc

 // Copyright 2014 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 "components/cast_certificate/cast_cert_validator.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 280 matching lines @@
                                    signature_policy.get(),
                                    ConvertExplodedTime(time))) {
     return false;
   }
 
   // Check properties of the leaf certificate (key usage, policy), and construct
   // a CertVerificationContext that uses its public key.
   return CheckTargetCertificate(input_chain[0].get(), context, policy);
 }
 
+const std::string FindCastTrustAnchorByName(const std::string& name) {
+  std::vector<scoped_refptr<net::ParsedCertificate>> matches;
+  CastTrustStore::Get().FindTrustAnchorsByNormalizedName(net::der::Input(&name),
+                                                         &matches);
+  if (matches.empty())
+    return "";
+  return matches[0]->der_cert().AsString();
+}
+
 std::unique_ptr<CertVerificationContext> CertVerificationContextImplForTest(
     const base::StringPiece& spki) {
   // Use a bogus CommonName, since this is just exposed for testing signature
   // verification by unittests.
   return base::WrapUnique(
       new CertVerificationContextImpl(net::der::Input(spki), "CommonName"));
 }
 
 bool AddTrustAnchorForTest(const uint8_t* data, size_t length) {
   scoped_refptr<net::ParsedCertificate> anchor(
       net::ParsedCertificate::CreateFromCertificateData(
           data, length,
           net::ParsedCertificate::DataSource::EXTERNAL_REFERENCE));
   if (!anchor)
     return false;
   CastTrustStore::Get().AddTrustedCertificate(std::move(anchor));
   return true;
 }
 
 }  // namespace cast_certificate