public async Task <byte[]> BeginAsync() { if (_ubiqWebServices == null) { throw new ObjectDisposedException(GetType().Name); } else if (_aesGcmBlockCipher != null) { throw new InvalidOperationException("encryption in progress"); } if (_encryptionKey == null) { // JIT: request encryption key from server _encryptionKey = await _ubiqWebServices.GetEncryptionKeyAsync(_usesRequested).ConfigureAwait(false); } // check key 'usage count' against server-specified limit if (_useCount > _encryptionKey.MaxUses) { throw new InvalidOperationException("maximum key uses exceeded"); } _useCount++; var algorithmInfo = new AlgorithmInfo(_encryptionKey.SecurityModel.Algorithm); // generate random IV for encryption byte[] initVector = new byte[algorithmInfo.InitVectorLength]; var random = RandomNumberGenerator.Create(); random.GetBytes(initVector); var cipherHeader = new CipherHeader { Version = 0, Flags = CipherHeader.FLAGS_AAD_ENABLED, AlgorithmId = algorithmInfo.Id, InitVectorLength = (byte)initVector.Length, EncryptedDataKeyLength = (short)_encryptionKey.EncryptedDataKeyBytes.Length, InitVectorBytes = initVector, EncryptedDataKeyBytes = _encryptionKey.EncryptedDataKeyBytes }; // note: include cipher header bytes in AES result! var cipherHeaderBytes = cipherHeader.Serialize(); _aesGcmBlockCipher = new AesGcmBlockCipher( forEncryption: true, algorithmInfo: algorithmInfo, key: _encryptionKey.UnwrappedDataKey, initVector: initVector, additionalBytes: cipherHeaderBytes); return(cipherHeaderBytes); }
public static void ReadEncryptionResponse(Client client, PacketReader reader) { EncryptionKeyResponse ekr = new EncryptionKeyResponse(); ekr.Read(reader); if (!reader.Failed) { Client.HandlePacketEncryptionResponse(client, ekr); } }
public static void HandlePacketEncryptionResponse(Client client, EncryptionKeyResponse packet) { client.SharedKey = PacketCryptography.Decrypt(packet.SharedSecret); RijndaelManaged recv = PacketCryptography.GenerateAES(client.SharedKey); RijndaelManaged send = PacketCryptography.GenerateAES(client.SharedKey); client.Decrypter = recv.CreateDecryptor(); byte[] packetToken = PacketCryptography.Decrypt(packet.VerifyToken); if (!packetToken.SequenceEqual(PacketCryptography.VerifyToken)) { client.Kick("Wrong token"); return; } client.Send_Sync_Packet(new EncryptionKeyResponse()); client.Encrypter = send.CreateEncryptor(); }
private async Task <string> SecurePassword(string rawPassword) { var encryptedPassword = rawPassword; //Try encrypting password. If we can encrypt it, do so... var secureResponse = await fetchEncryptionKey(); ekr = new EncryptionKeyResponse(); ekr = secureResponse.Response; if (ekr != null) { byte[] encryptedBytes; // get a public key to ENCRYPT... Rsa rsa = new Rsa(Convert.FromBase64String(ekr.encryptionKey), true); encryptedBytes = rsa.RsaEncrypt(string.Format("{0}|{1}", rawPassword, ekr.timeStamp)); encryptedPassword = Convert.ToBase64String(encryptedBytes); } return(encryptedPassword); }
public void NetThread() { SessionIDRequest sessionID = new SessionIDRequest(Storage.Network.UserName, Storage.Network.Password); sessionID.SendRequest(); SharedSecretGenerator sharedSecret = new SharedSecretGenerator(); //random byte[16] gen Timer positionUpdater = new Timer(PositionSender, null, Timeout.Infinite, 50); //create position updater Socket networkSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); networkSocket.Connect(Storage.Network.Server, Storage.Network.Port); _stream = new EnhancedStream(networkSocket); Handshake handshake = new Handshake(_stream); handshake.Send(Storage.Network.UserName, Storage.Network.Server, Storage.Network.Port); // connect Storage.Network.IsConnected = true; while (Storage.Network.IsConnected) { switch (_packetIDbuffer = (byte)_stream.ReadByte()) { case 0x00: KeepAlive keepAlive = new KeepAlive(_stream); break; case 0x01: LoginRequest loginRequest = new LoginRequest(_stream); //positionUpdater.Change(0, 50); ClientSettings clientSettings = new ClientSettings(_stream); clientSettings.Send(); break; case 0x03: ChatMessage chatMessage = new ChatMessage(_stream); break; case 0x04: TimeUpdate timeUpdate = new TimeUpdate(_stream); break; case 0x05: EntityEquipment entityEquipment = new EntityEquipment(_stream); break; case 0x06: SpawnPosition spawnPosition = new SpawnPosition(_stream); break; case 0x08: UpdateHealth updateHealth = new UpdateHealth(_stream); break; case 0x09: RespawnPacket respawnPacket = new RespawnPacket(_stream); break; case 0x0D: _playerPositionLook = new PlayerPositionLook(_stream); break; case 0x10: HeldItemChange heldItemChange = new HeldItemChange(_stream); break; case 0x11: UseBed useBed = new UseBed(_stream); break; case 0x12: Animation animation = new Animation(_stream); break; case 0x14: SpawnNamedEntity spawnNamedEntity = new SpawnNamedEntity(_stream); break; case 0x16: CollectItem collectItem = new CollectItem(_stream); break; case 0x17: SpawnObjectVehicle spawnObjectVehicle = new SpawnObjectVehicle(_stream); break; case 0x18: SpawnMob spawnMob = new SpawnMob(_stream); break; case 0x19: SpawnPainting spawnPainting = new SpawnPainting(_stream); break; case 0x1A: SpawnExperienceOrb spawnExperienceOrb = new SpawnExperienceOrb(_stream); break; case 0x1C: EntityVelocity entityVelocity = new EntityVelocity(_stream); break; case 0x1D: DestroyEntity destroyEntity = new DestroyEntity(_stream); break; case 0x1E: Entity entity = new Entity(_stream); break; case 0x1F: EntityRelativeMove entityRelativeMove = new EntityRelativeMove(_stream); break; case 0x20: EntityLook entityLook = new EntityLook(_stream); break; case 0x21: EntityLookRelativeMove entityLookRelativeMove = new EntityLookRelativeMove(_stream); break; case 0x22: EntityTeleport entityTeleport = new EntityTeleport(_stream); break; case 0x23: EntityHeadLook entityHeadLook = new EntityHeadLook(_stream); break; case 0x26: EntityStatus entityStatus = new EntityStatus(_stream); break; case 0x27: AttachEntity attachEntity = new AttachEntity(_stream); break; case 0x28: EntityMetadata entityMetadata = new EntityMetadata(_stream); break; case 0x29: EntityEffect entityEffect = new EntityEffect(_stream); break; case 0x2A: RemoveEntityEffect removeEntityEffect = new RemoveEntityEffect(_stream); break; case 0x2B: SetExperience setExperience = new SetExperience(_stream); break; case 0x33: ChunkData mapChunk = new ChunkData(_stream); break; case 0x34: MultiBlockChange multiBlockChange = new MultiBlockChange(_stream); break; case 0x35: BlockChange blockChange = new BlockChange(_stream); break; case 0x36: BlockAction blockAction = new BlockAction(_stream); break; case 0x37: BlockBreakAnimation blockBreakAnimation = new BlockBreakAnimation(_stream); break; case 0x38: MapChunkBulk mapChunkBulk = new MapChunkBulk(_stream); break; case 0x3C: Explosion explosion = new Explosion(_stream); break; case 0x3D: SoundParticleEffect soundParticleEffect = new SoundParticleEffect(_stream); break; case 0x3E: NamedSoundEffect namedSoundEffect = new NamedSoundEffect(_stream); break; case 0x46: ChangeGameState changeGameState = new ChangeGameState(_stream); break; case 0x47: Thunderbolt thunderbolt = new Thunderbolt(_stream); break; case 0x64: OpenWindow openWindow = new OpenWindow(_stream); break; case 0x65: CloseWindow closeWindow = new CloseWindow(_stream); break; case 0x67: SetSlot setSlot = new SetSlot(_stream); break; case 0x68: SetWindowItems setWindowItems = new SetWindowItems(_stream); break; case 0x69: UpdateWindowProperty updateWindowProperty = new UpdateWindowProperty(_stream); break; case 0x6A: ConfirmTransaction confirmTransaction = new ConfirmTransaction(_stream); break; case 0x6B: CreativeInventoryAction creativeInventoryAction = new CreativeInventoryAction(_stream); break; case 0x6C: EnchantItem enchantItem = new EnchantItem(_stream); break; case 0x82: UpdateSign updateSign = new UpdateSign(_stream); break; case 0x83: ItemData itemData = new ItemData(_stream); break; case 0x84: UpdateTileEntity updateTileEntity = new UpdateTileEntity(_stream); break; case 0xC8: IncrementStatistic incrementStatistic = new IncrementStatistic(_stream); break; case 0xC9: PlayerListItem playerListItem = new PlayerListItem(_stream); break; case 0xCA: PlayerAbilities playerAbilities = new PlayerAbilities(_stream); break; case 0xCB: TabComplete tabcomplete = new TabComplete(_stream); break; case 0xFA: PluginMessage pluginMessage = new PluginMessage(_stream); break; case 0xFC: EncryptionKeyResponse encryptionKeyResponse = new EncryptionKeyResponse(_stream); encryptionKeyResponse.Get(); _stream = new AesStream(networkSocket, _stream, sharedSecret.Get); ClientStatuses clientStatuses = new ClientStatuses(_stream); clientStatuses.Send(0); break; case 0xFD: EncryptionKeyRequest encryptionKeyRequest = new EncryptionKeyRequest(_stream, sharedSecret.Get, sessionID.GetID(), Storage.Network.UserName); // encryptionKeyResponse = new EncryptionKeyResponse(_stream); encryptionKeyResponse.Send(encryptionKeyRequest.GetEncSharedSecret(), encryptionKeyRequest.GetEncToken()); break; case 0xFF: positionUpdater = null; DisconnectKick disconnectKick = new DisconnectKick(_stream); networkSocket.Disconnect(false); break; default: throw new Exception("We got a Unknown Packet (" + _packetIDbuffer + ")from the Server. This should not happen: Error in Packet parser"); } } }