PairingAuthenticator implementation and plumbing.

remoting/protocol/authentication_method.h

 // Copyright (c) 2012 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.
 
 // AuthenticationMethod represents an authentication algorithm and its
 // configuration. It knows how to parse and format authentication
 // method names.
 // Currently the following methods are supported:
 //   spake2_plain - SPAKE2 without hashing applied to the password.
 //   spake2_hmac - SPAKE2 with HMAC hashing of the password.
 
 #ifndef REMOTING_PROTOCOL_AUTHENTICATION_METHOD_H_
 #define REMOTING_PROTOCOL_AUTHENTICATION_METHOD_H_
 
 #include <string>
 
 namespace remoting {
 namespace protocol {
 
 class Authenticator;
 
 class AuthenticationMethod {
  public:
   enum MethodType {
     INVALID,
     SPAKE2,
+    SPAKE2_PAIR,
     THIRD_PARTY
   };
 
   enum HashFunction {
     NONE,
     HMAC_SHA256,
   };
 
   // Constructors for various authentication methods.
   static AuthenticationMethod Invalid();
   static AuthenticationMethod Spake2(HashFunction hash_function);
+  static AuthenticationMethod Spake2Pair();
   static AuthenticationMethod ThirdParty();
 
   // Parses a string that defines an authentication method. Returns an
   // invalid value if the string is invalid.
   static AuthenticationMethod FromString(const std::string& value);
 
   // Applies the specified hash function to |shared_secret| with the
   // specified |tag| as a key.
   static std::string ApplyHashFunction(HashFunction hash_function,
                                        const std::string& tag,
@@ skipping 34 matching lines @@
 
   // Parse string representation of a shared secret hash. The |as_string|
   // must be in form "<hash_function>:<hash_value_base64>".
   bool Parse(const std::string& as_string);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_AUTHENTICATION_METHOD_H_