components/proximity_auth/secure_context.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_PROXIMITY_AUTH_SECURE_CONTEXT_H
   6 #define COMPONENTS_PROXIMITY_AUTH_SECURE_CONTEXT_H
   7
   8 #include "base/callback_forward.h"
   9
  10 namespace proximity_auth {
  11
  12 // An interface used to decode and encode messages.
  13 class SecureContext {
  14  public:
  15   typedef base::Callback<void(const std::string& message)> MessageCallback;
  16
  17   // The protocol version used during authentication.
  18   enum ProtocolVersion {
  19     PROTOCOL_VERSION_THREE_ZERO,  // 3.0
  20     PROTOCOL_VERSION_THREE_ONE,   // 3.1
  21   };
  22
  23   virtual ~SecureContext() {}
  24
  25   // Decodes the |encoded_message| and returns the result.
  26   // This function is asynchronous because the ChromeOS implementation requires
  27   // a DBus call.
  28   virtual void Decode(const std::string& encoded_message,
  29                       const MessageCallback& callback) = 0;
  30
  31   // Encodes the |message| and returns the result.
  32   // This function is asynchronous because the ChromeOS implementation requires
  33   // a DBus call.
  34   virtual void Encode(const std::string& message,
  35                       const MessageCallback& callback) = 0;
  36
  37   // Returns the protocol version that was used during authentication.
  38   virtual ProtocolVersion GetProtocolVersion() const = 0;
  39 };
  40
  41 }  // namespace proximity_auth
  42
  43 #endif  // COMPONENTS_PROXIMITY_AUTH_SECURE_CONTEXT_H