xbmc/media/drm/CryptoSession.h

   1 /*
   2  *  Copyright (C) 2005-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #pragma once
  10
  11 #include "commons/Buffer.h"
  12
  13 #include <map>
  14 #include <string>
  15 #include <vector>
  16
  17 namespace DRM
  18 {
  19   class CCryptoSession;
  20
  21   typedef CCryptoSession* (*GET_CRYPTO_SESSION_INTERFACE_FN)(const std::string& UUID, const std::string& cipherAlgo, const std::string& hmacAlgo);
  22
  23   class CCryptoSession
  24   {
  25   public:
  26     // Interface registration
  27     static CCryptoSession* GetCryptoSession(const std::string& UUID, const std::string& cipherAlgo, const std::string& macAlgo);
  28     virtual ~CCryptoSession() = default;
  29
  30     // Interface methods
  31     virtual XbmcCommons::Buffer GetKeyRequest(const XbmcCommons::Buffer& init, const std::string& mimeType, bool offlineKey, const std::map<std::string, std::string>& parameters) = 0;
  32     virtual std::string GetPropertyString(const std::string& name) = 0;
  33     virtual std::string ProvideKeyResponse(const XbmcCommons::Buffer& response) = 0;
  34     virtual void RemoveKeys() = 0;
  35     virtual void RestoreKeys(const std::string& keySetId) = 0;
  36     virtual void SetPropertyString(const std::string& name, const std::string& value) = 0;
  37
  38     // Crypto methods
  39     virtual XbmcCommons::Buffer Decrypt(const XbmcCommons::Buffer& cipherKeyId, const XbmcCommons::Buffer& input, const XbmcCommons::Buffer& iv) = 0;
  40     virtual XbmcCommons::Buffer Encrypt(const XbmcCommons::Buffer& cipherKeyId, const XbmcCommons::Buffer& input, const XbmcCommons::Buffer& iv) = 0;
  41     virtual XbmcCommons::Buffer Sign(const XbmcCommons::Buffer& macKeyId, const XbmcCommons::Buffer& message) = 0;
  42     virtual bool Verify(const XbmcCommons::Buffer& macKeyId, const XbmcCommons::Buffer& message, const XbmcCommons::Buffer& signature ) = 0;
  43
  44   protected:
  45     static void RegisterInterface(GET_CRYPTO_SESSION_INTERFACE_FN fn);
  46
  47   private:
  48     static std::vector<GET_CRYPTO_SESSION_INTERFACE_FN> s_registeredInterfaces;
  49   };
  50
  51 } //namespace