Hook up Chrome Cast sender to Cast CRL.

extensions/common/api/cast_channel/cast_channel.proto

 // 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.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 package extensions.api.cast_channel;
 
@@ skipping 41 matching lines @@
   optional string payload_utf8 = 6;
   optional bytes payload_binary = 7;
 }
 
 enum SignatureAlgorithm {
   UNSPECIFIED = 0;
   RSASSA_PKCS1v15 = 1;
   RSASSA_PSS = 2;
 }
 
+enum HashAlgorithm {
+  SHA1 = 0;
+  SHA256 = 1;
+}
+
 // Messages for authentication protocol between a sender and a receiver.
 message AuthChallenge {
   optional SignatureAlgorithm signature_algorithm = 1
       [default = RSASSA_PKCS1v15];
+  optional bytes sender_nonce = 2;
+  optional HashAlgorithm hash_algorithm = 3 [default = SHA1];
 }
 
 message AuthResponse {
   required bytes signature = 1;
   required bytes client_auth_certificate = 2;
   repeated bytes intermediate_certificate = 3;
   optional SignatureAlgorithm signature_algorithm = 4
       [default = RSASSA_PKCS1v15];
+  optional bytes sender_nonce = 5;
+  optional HashAlgorithm hash_algorithm = 6 [default = SHA1];
+  optional bytes crl = 7;
 }
 
 message AuthError {
   enum ErrorType {
     INTERNAL_ERROR = 0;
     NO_TLS = 1;  // The underlying connection is not TLS
     SIGNATURE_ALGORITHM_UNAVAILABLE = 2;
   }
   required ErrorType error_type = 1;
 }
 
 message DeviceAuthMessage {
   // Request fields
   optional AuthChallenge challenge = 1;
   // Response fields
   optional AuthResponse response = 2;
   optional AuthError error = 3;
 }