Cast device revocation checking.

components/cast_certificate/cast_crl.h

Index: components/cast_certificate/cast_crl.h
diff --git a/components/cast_certificate/cast_crl.h b/components/cast_certificate/cast_crl.h
new file mode 100644
index 0000000000000000000000000000000000000000..e95faf4861d630d3a37aa224b82dfe3c8d1842e3
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+++ b/components/cast_certificate/cast_crl.h
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+// Copyright 2016 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.
+
+#ifndef COMPONENTS_CAST_CERTIFICATE_CAST_CRL_H_
+#define COMPONENTS_CAST_CERTIFICATE_CAST_CRL_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/time/time.h"
+#include "net/cert/internal/parsed_certificate.h"
+
+namespace cast_certificate {
+
+// This class represents the CRL information parsed from the binary proto.
+class CastCRL {
+ public:
+  virtual ~CastCRL(){};
+
+  // Verifies the revocation status of a cast device certificate given a chain
+  // of X.509 certificates.
+  //
+  // Inputs:
+  // * |certs| is the verified chain of X.509 certificates:
+  //   * |certs[0]| is the target certificate (i.e. the device certificate).
+  //   * |certs[i]| is the certificate that issued certs[i-1].
+  //   * |certs.back()| is assumed to be a trusted root.
+  //
+  // * |time| is the unix timestamp to use for determining if the certificate
+  //   is revoked.
+  //
+  // Output:
+  // Returns true if no certificate in the chain was revoked.
+  virtual bool CheckRevocation(const net::ParsedCertificateList& certs,
+                               const base::Time& time) const = 0;
+};
+
+// Parses and verifies the CRL used to verify the revocation status of
+// Cast device certificates.
+//
+// Inputs:
+// * |crl_proto| is a serialized cast_certificate.CrlBundle proto.
+// * |time| is the unix timestamp to use for determining if the CRL is valid.
+//
+// Output:
+// Returns the CRL object if success, nullptr otherwise.
+std::unique_ptr<CastCRL> ParseAndVerifyCRL(const std::string& crl_proto,
+                                           const base::Time& time);
+
+// Exposed only for testing, not for use in production code.
+//
+// Replaces trusted root certificates into the CastCRLTrustStore.
+//
+// Output:
+// Returns true if successful, false if nothing is changed.
+bool SetCRLTrustAnchorForTest(const std::string& cert) WARN_UNUSED_RESULT;
+
+}  // namespace cast_certificate
+
+#endif  // COMPONENTS_CAST_CERTIFICATE_CAST_CRL_H_