public static void Main(string[] args) { // create a new DH instance DiffieHellman dh1 = new DiffieHellmanManaged(); // export the public parameters of the first DH instance DHParameters dhp = dh1.ExportParameters(false); // create a second DH instance and initialize it with the public parameters of the first instance DiffieHellman dh2 = new DiffieHellmanManaged(dhp.P, dhp.G, 160); // generate the public key of the first DH instance byte[] ke1 = dh1.CreateKeyExchange(); // generate the public key of the second DH instance byte[] ke2 = dh2.CreateKeyExchange(); // let the first DH instance compute the shared secret using the second DH public key byte[] dh1k = dh1.DecryptKeyExchange(ke2); // let the second DH instance compute the shared secret using the first DH public key byte[] dh2k = dh2.DecryptKeyExchange(ke1); // print both shared secrets to verify they are the same Console.WriteLine("Computed secret of instance 1:"); PrintBytes(dh1k); Console.WriteLine("\r\nComputed secret of instance 2:"); PrintBytes(dh2k); Console.WriteLine("\r\nPress ENTER to continue..."); Console.ReadLine(); }
public override void HandleClient(TlsContext ctx, KeyExchange clientExchange) { var serverDh = (DiffieHellmanKeyExchange)clientExchange; using (var X = new SecureBuffer(dh.DecryptKeyExchange(serverDh.Y))) { ComputeMasterSecret(ctx, X); } }
public override void GenerateClient(TlsContext ctx) { using (var dh = new DiffieHellmanManaged(P, G, 0)) { using (var X = new SecureBuffer(dh.DecryptKeyExchange(Y))) { Y = dh.CreateKeyExchange(); ComputeMasterSecret(ctx, X); } } }
public void should_be_able_to_create_an_end_to_end_handshake() { var diffieHellmanManaged1 = new DiffieHellmanManaged("23", "5"); string exchange1 = diffieHellmanManaged1.CreateKeyExchange(); var diffieHellmanManaged2 = new DiffieHellmanManaged("23", "5"); string exchange2 = diffieHellmanManaged2.CreateKeyExchange(); Assert.IsTrue(diffieHellmanManaged1.DecryptKeyExchange(exchange2) == diffieHellmanManaged2.DecryptKeyExchange(exchange1)); }
public void should_be_able_to_create_an_end_to_end_handshake() { var diffieHellmanManaged1 = new DiffieHellmanManaged("23", "5"); string exchange1 = diffieHellmanManaged1.CreateKeyExchange(); var diffieHellmanManaged2 = new DiffieHellmanManaged("23", "5"); string exchange2 = diffieHellmanManaged2.CreateKeyExchange(); Assert.IsTrue(diffieHellmanManaged1.DecryptKeyExchange(exchange2) == diffieHellmanManaged2.DecryptKeyExchange(exchange1)); }
private static string Test1() { DiffieHellman dh1 = new DiffieHellmanManaged(); DiffieHellman dh2 = new DiffieHellmanManaged(); string secret1 = Convert.ToBase64String(dh1.DecryptKeyExchange(dh2.CreateKeyExchange())); string secret2 = Convert.ToBase64String(dh2.DecryptKeyExchange(dh1.CreateKeyExchange())); Assert.AreEqual(secret1, secret2, "Secret keys do not match for some reason."); return(secret1); }
public void should_create_a_final_key_with_the_collaborators_key() { _diffieHellmanManaged = new DiffieHellmanManaged("23", "5", "15"); _diffieHellmanManaged.CreateKeyExchange(); Assert.AreEqual("2", _diffieHellmanManaged.DecryptKeyExchange("8")); _diffieHellmanManaged = new DiffieHellmanManaged("23", "5", "6"); _diffieHellmanManaged.CreateKeyExchange(); Assert.AreEqual("2", _diffieHellmanManaged.DecryptKeyExchange("19")); }
public void should_create_a_final_key_with_the_collaborators_key() { _diffieHellmanManaged = new DiffieHellmanManaged("23", "5", "15"); _diffieHellmanManaged.CreateKeyExchange(); Assert.AreEqual("2", _diffieHellmanManaged.DecryptKeyExchange("8")); _diffieHellmanManaged = new DiffieHellmanManaged("23", "5", "6"); _diffieHellmanManaged.CreateKeyExchange(); Assert.AreEqual("2", _diffieHellmanManaged.DecryptKeyExchange("19")); }
internal void DecryptKeyExchange(byte[] keyExchangeBytes) { keyExchangeBytes = diffieHellman.DecryptKeyExchange(keyExchangeBytes); keyBytes = new byte[keySize]; ivBytes = new byte[ivSize]; Array.Copy(keyExchangeBytes, 0, keyBytes, 0, keySize); Array.Copy(keyExchangeBytes, keySize, ivBytes, 0, ivSize); //deTransform = alg.CreateDecryptor(keyBytes, ivBytes); //enTransform = alg.CreateEncryptor(keyBytes, ivBytes); localHasKey = true; }
public static void Main(string[] args) { DiffieHellman diffieHellman = new DiffieHellmanManaged(); DHParameters dHParameters = diffieHellman.ExportParameters(includePrivate: false); DiffieHellman diffieHellman2 = new DiffieHellmanManaged(dHParameters.P, dHParameters.G, 160); byte[] keyEx = diffieHellman.CreateKeyExchange(); byte[] keyEx2 = diffieHellman2.CreateKeyExchange(); byte[] bytes = diffieHellman.DecryptKeyExchange(keyEx2); byte[] bytes2 = diffieHellman2.DecryptKeyExchange(keyEx); Console.WriteLine("Computed secret of instance 1:"); PrintBytes(bytes); Console.WriteLine("\r\nComputed secret of instance 2:"); PrintBytes(bytes2); Console.WriteLine("\r\nPress ENTER to continue..."); Console.ReadLine(); }
/// <summary> /// Генерация клиентского запроса с параметрами Диффи-Хеллмана /// </summary> /// <param name="serverDh"></param> /// <returns></returns> private Combinator SetClientDhParams(Combinator serverDh) { var g = serverDh.Get <int>("g"); var dhPrime = serverDh.Get <byte[]>("dh_prime"); var gA = serverDh.Get <byte[]>("g_a"); var dh = new DiffieHellmanManaged(dhPrime, new BigInteger(g).GetBytes(), 2048); // generate the public key of the second DH instance byte[] gB = dh.CreateKeyExchange(); // let the second DH instance compute the shared secret using the first DH public key _authKey = dh.DecryptKeyExchange(gA); // Сформируем ответ // отдаем g_b в BE var clientDhInnerData = new Combinator("client_DH_inner_data", _nonce, _serverNonce, (long)0, gB); byte[] s = clientDhInnerData.Serialize(); // Шифрование строки var aes = new Aes256IgeManaged(CalculateTmpAesKey(_newNonce, _serverNonce) , CalculateTmpAesIV(_newNonce, _serverNonce)); using (var ms = new MemoryStream()) using (var bw = new BinaryWriter(ms)) { SHA1 sha1 = SHA1.Create(); bw.Write(sha1.ComputeHash(s)); bw.Write(s); var r = new Random(); while (bw.BaseStream.Length % 16 != 0) { bw.Write((byte)r.Next()); } s = aes.Encrypt(ms.ToArray()); } // Сформируем ответ var setClientDhParams = new Combinator("set_client_DH_params", _nonce, _serverNonce, s); return(setClientDhParams); }
public void KeyExchange() { // create a new DH instance DiffieHellman dh1 = new DiffieHellmanManaged(); // export the public parameters of the first DH instance DHParameters dhp = dh1.ExportParameters(false); // create a second DH instance and initialize it with the public parameters of the first instance DiffieHellman dh2 = new DiffieHellmanManaged(dhp.P, dhp.G, 160); // generate the public key of the first DH instance byte[] ke1 = dh1.CreateKeyExchange(); // generate the public key of the second DH instance byte[] ke2 = dh2.CreateKeyExchange(); // let the first DH instance compute the shared secret using the second DH public key byte[] dh1k = dh1.DecryptKeyExchange(ke2); // let the second DH instance compute the shared secret using the first DH public key byte[] dh2k = dh2.DecryptKeyExchange(ke1); // both shared secrets are the same AssertEquals("Shared Secret", dh1k, dh2k); }
private void OnConnected(ITransport transport) { try { LoggingService.LogInfo("Transport {0} connected.", transport); if (transport.Encryptor != null) { var dh = new DiffieHellmanManaged(); var keyxBytes = dh.CreateKeyExchange(); transport.Send(dh.CreateKeyExchange(), 0, keyxBytes.Length); keyxBytes = new byte [transport.Encryptor.KeyExchangeLength]; transport.Receive(keyxBytes, 0, transport.Encryptor.KeyExchangeLength); keyxBytes = dh.DecryptKeyExchange(keyxBytes); var keyBytes = new byte[transport.Encryptor.KeySize]; var ivBytes = new byte[transport.Encryptor.IvSize]; Array.Copy(keyxBytes, 0, keyBytes, 0, keyBytes.Length); Array.Copy(keyxBytes, keyBytes.Length, ivBytes, 0, ivBytes.Length); transport.Encryptor.SetKey(keyBytes, ivBytes); } var connectionType = EndianBitConverter.GetBytes(transport.ConnectionType); transport.Send(connectionType, 0, connectionType.Length); var networkId = Common.Utils.SHA512(transport.Network.NetworkName); transport.Send(networkId, 0, networkId.Length); // Ready, Steady, GO! var callback = connectCallbacks [transport]; connectCallbacks.Remove(transport); callback(transport); } catch (Exception ex) { transport.Disconnect(ex); RaiseTransportError(transport, ex); } }
public override bool SetNetworkInitRequiredData(byte[] data) { if (data != null) { DiffieHellmanWireContainer container = Serializer <GladNetProtobufNetSerializer> .Instance.Deserialize <DiffieHellmanWireContainer>(data); if (container == null) { throw new LoggableException("Failed to set DiffieHellman params.", null, LogType.Error); } //If we're the second peer we want to import the parameters. if (!SentPublicKey) { this.internalEncryptionObj.Clear(); this.internalEncryptionObj = new DiffieHellmanManaged(container.Parameters.P, container.Parameters.G, 160); } if (container.PublicKey == null) { throw new LoggableException("Recieved a null public key for mentalis DiffieHellman exchange.", null, LogType.Error); } secretKey = internalEncryptionObj.DecryptKeyExchange(container.PublicKey); /*Console.WriteLine("DH KeyLength: " + secretKey.Length); * * for (int i = 0; i < secretKey.Length; i++) * Console.Write(secretKey[i] + " ");*/ Bytes = secretKey; return(secretKey != null); } else { return(false); } }
// =========================加密相关=================================== // 加密通讯 public void Encrypt(Int32 send_seed, Int32 receive_seed) { Byte[] _send = BitConverter.GetBytes(send_seed); if (BitConverter.IsLittleEndian) { Array.Reverse(_send); } Byte[] _recv = BitConverter.GetBytes(receive_seed); if (BitConverter.IsLittleEndian) { Array.Reverse(_recv); } string key1; string key2; Byte[] _key1 = dhEnc.DecryptKeyExchange(_send); BigInteger bi1 = new BigInteger(_key1); key1 = Config.SALT + bi1.ToString(); Byte[] _key2 = dhDec.DecryptKeyExchange(_recv); BigInteger bi2 = new BigInteger(_key2); key2 = Config.SALT + bi2.ToString(); RC4 rc4enc = RC4.Create(); RC4 rc4dec = RC4.Create(); Byte[] seed1 = Encoding.ASCII.GetBytes(key1); Byte[] seed2 = Encoding.ASCII.GetBytes(key2); // en/decryptor不为null时自动启动加密 // Get an encryptor. encryptor = rc4enc.CreateEncryptor(seed1, null); // Get a decryptor. decryptor = rc4dec.CreateDecryptor(seed2, null); }
public override byte[] GenerateSecret() { return(dh.DecryptKeyExchange(pubk.GetY().GetBytes())); }
public static byte[] ComputeSharedKey(DHPrivateKey privateKey, DHPublicKey publicKey) { DiffieHellman dh = new DiffieHellmanManaged(privateKey.P, privateKey.G, privateKey.X); return(dh.DecryptKeyExchange(publicKey.KeyExchangeData)); }
public void Add(ITransport transport, TransportCallback connectCallback) { try { // XXX: This should be negotiated as part of the initial handshake. transport.Encryptor = new AESTransportEncryptor(); transports.Add(transport); NewTransportAdded?.Invoke(this, new TransportEventArgs(transport)); this.loggingService.LogInfo(String.Format("Transport {0} added", transport.ToString())); if (transport.Incoming == true) { if (connectCallback != null) { throw new ArgumentException("You can only specify a ConnectCallback for outoging connections!"); } if (transport.Encryptor != null) { DiffieHellmanManaged dh = new DiffieHellmanManaged(); byte[] keyxBytes = new byte[transport.Encryptor.KeyExchangeLength]; transport.Receive(keyxBytes, 0, keyxBytes.Length); keyxBytes = dh.DecryptKeyExchange(keyxBytes); byte[] keyBytes = new byte[transport.Encryptor.KeySize]; byte[] ivBytes = new byte[transport.Encryptor.IvSize]; Array.Copy(keyxBytes, 0, keyBytes, 0, keyBytes.Length); Array.Copy(keyxBytes, keyBytes.Length, ivBytes, 0, ivBytes.Length); keyxBytes = dh.CreateKeyExchange(); transport.Send(keyxBytes, 0, keyxBytes.Length); transport.Encryptor.SetKey(keyBytes, ivBytes); } //Receive connection type, which is a ulong (8 bytes) byte[] responseBuffer = new byte[8]; transport.Receive(responseBuffer, 0, 8); ulong connectionType = EndianBitConverter.ToUInt64(responseBuffer, 0); // Recieve network ID (64 bytes) responseBuffer = new byte[64]; transport.Receive(responseBuffer, 0, 64); string networkId = EndianBitConverter.ToString(responseBuffer).Replace("-", ""); // Match to one of our known networks! foreach (Network network in Core.Networks) { if (network.NetworkID == networkId) { transport.Network = network; } } if (transport.Network == null) { throw new Exception(String.Format("Unknown network: {0}.", networkId)); } transport.ConnectionType = connectionType; if (connectionType == ConnectionType.NodeConnection) { LocalNodeConnection connection = new LocalNodeConnection(transport); transport.Operation = connection; transport.Network.AddConnection(connection); connection.Start(); } else if (connectionType == ConnectionType.TransferConnection) { this.fileTransferManager.HandleIncomingTransport(transport); } else { throw new Exception(String.Format("Unknown connection type: {0}.", connectionType.ToString())); } } else { if (connectCallback == null) { throw new ArgumentNullException("connectCallback"); } connectCallbacks.Add(transport, connectCallback); this.loggingService.LogInfo("Transport {0} connecting...", transport); TransportCallback callback = new TransportCallback(OnConnected); transport.Connect(callback); } } catch (Exception ex) { transport.Disconnect(ex); RaiseTransportError(transport, ex); } }
internal void Add(ITransport transport, TransportCallback connectCallback) { try { // XXX: This should be negotiated as part of the initial handshake. transport.Encryptor = new AESTransportEncryptor(); transports.Add(transport); if (NewTransportAdded != null) { NewTransportAdded(transport); } LoggingService.LogInfo($"Transport {transport} added"); if (transport.Incoming) { if (connectCallback != null) { throw new ArgumentException("You can only specify a ConnectCallback for outoging connections!"); } if (transport.Encryptor != null) { var dh = new DiffieHellmanManaged(); var keyxBytes = new byte[transport.Encryptor.KeyExchangeLength]; transport.Receive(keyxBytes, 0, keyxBytes.Length); keyxBytes = dh.DecryptKeyExchange(keyxBytes); var keyBytes = new byte[transport.Encryptor.KeySize]; var ivBytes = new byte[transport.Encryptor.IvSize]; Array.Copy(keyxBytes, 0, keyBytes, 0, keyBytes.Length); Array.Copy(keyxBytes, keyBytes.Length, ivBytes, 0, ivBytes.Length); keyxBytes = dh.CreateKeyExchange(); transport.Send(keyxBytes, 0, keyxBytes.Length); transport.Encryptor.SetKey(keyBytes, ivBytes); } //Receive connection type, which is a ulong (8 bytes) var responseBuffer = new byte[8]; transport.Receive(responseBuffer, 0, 8); var connectionType = EndianBitConverter.ToUInt64(responseBuffer, 0); // Recieve network ID (64 bytes) responseBuffer = new byte[64]; transport.Receive(responseBuffer, 0, 64); var networkId = EndianBitConverter.ToString(responseBuffer).Replace("-", ""); // Match to one of our known networks! foreach (var network in core.Networks) { if (network.NetworkID == networkId) { transport.Network = network; } } if (transport.Network == null) { throw new Exception($"Unknown network: {networkId}."); } transport.ConnectionType = connectionType; if (connectionType == ConnectionType.NodeConnection) { var connection = new LocalNodeConnection(transport); transport.Operation = connection; transport.Network.AddConnection(connection); connection.Start(); } else if (connectionType == ConnectionType.TransferConnection) { core.FileTransferManager.NewIncomingConnection(transport); } else { throw new Exception($"Unknown connection type: {connectionType}."); } } else { if (connectCallback == null) { throw new ArgumentNullException(nameof(connectCallback)); } connectCallbacks.Add(transport, connectCallback); LoggingService.LogInfo("Transport {0} connecting...", transport); TransportCallback callback = OnConnected; transport.Connect(callback); } } catch (Exception ex) { transport.Disconnect(ex); RaiseTransportError(transport, ex); } }