public static async Task Run(CancellationToken cancellationToken)
{
// generate a key pair
byte[] privateKey = KeyGeneration.GeneratePrivateKey();
byte[] publicKey = KeyGeneration.GetPublicKeyFromPrivateKey(privateKey);
// configuring as a client with the default application key.
// messages will be padded to 64 bytes and cannot exceed
// 256 bytes.
var config = new MicroRatchetConfiguration
{
ApplicationKey = new byte[32],
IsClient = true,
MaximumMessageSize = 256,
MinimumMessageSize = 64
};
// create the MicroRatchet context
var services = new BouncyCastleServices(privateKey);
using var context = new MicroRatchetContext(services, config, null);
Console.WriteLine($"Starting Client with public key: {publicKey.ToHexString()}");
// Create UDP client. No connection since UDP is a
// connectionless message based protocol. For the client
// we don't specify a local endpoint.
using var udp = new UdpClient();
var serverEndpoint = new IPEndPoint(IPAddress.Loopback, PORT);
// Step 1: Initialize
while (!context.IsInitialized && !cancellationToken.IsCancellationRequested)
{
try
{
// 1.1 Send initialization request
Console.WriteLine("Sending initialization request");
byte[] msg = context.InitiateInitialization();
await udp.SendAsync(msg, serverEndpoint, cancellationToken);
Console.WriteLine($"SENT {msg.Length} bytes INITIALIZATION REQUEST");
// 1.2 Receive initialization response
var timeout = CancellationTokenSource.CreateLinkedTokenSource(
cancellationToken,
new CancellationTokenSource(15000).Token).Token;
var receivedData = await udp.ReceiveAsync(timeout);
Console.WriteLine($"RECEIVED {receivedData.Buffer.Length} bytes FROM SERVER");
var res = context.Receive(receivedData.Buffer);
if (res.ToSendBack != null)
{
Console.WriteLine("Received initialization response.");
Console.WriteLine($"Server public key: {context.GetRemotePublicKey().ToHexString()}");
Console.WriteLine("Sending first message");
// 1.3 Send first request
await udp.SendAsync(res.ToSendBack, serverEndpoint, cancellationToken);
Console.WriteLine($"SENT BACK {res.ToSendBack.Length} bytes");
// 1.4 Receive first response
timeout = CancellationTokenSource.CreateLinkedTokenSource(
cancellationToken,
new CancellationTokenSource(15000).Token).Token;
receivedData = await udp.ReceiveAsync(timeout);
Console.WriteLine($"RECEIVED {receivedData.Buffer.Length} bytes FROM SERVER");
res = context.Receive(receivedData.Buffer);
}
}
catch (Exception ex)
{
Console.WriteLine($"An exception was encountered: {ex.Message}");
}
}
// the context is now initialized and message can be sent back and forth
// as needed. Messages being dropped or received out of order does not
// affect subsequent messages.
if (!cancellationToken.IsCancellationRequested)
{
Console.WriteLine("Client initialized");
Console.WriteLine("Type stuff in and press enter to send to the server.\n\n");
// in order to get the console, udp stuff, and MR stuff to work
// together (even though nothing was written for async), we need
// some synchronization.
// A background thread reads from the console and pushes messages
// into a queue which then in turn get sent to the server by the
// Send task.
// A receive task handles messages from the server
// The receive task handles incoming UDP messages.
var messages = new ConcurrentQueue <string>();
var semaphore = new SemaphoreSlim(0);
async Task ReceiveTask()
{
while (!cancellationToken.IsCancellationRequested)
{
var received = await udp.ReceiveAsync(cancellationToken);
Console.WriteLine($"RECEIVED {received.Buffer.Length} bytes");
try
{
// pass the received data to the MR context
var message = context.Receive(received.Buffer);
// The message is always padded to the minimum message size,
// so read the incoming message as a null-terminated
// string.
string msg = message.Payload.DecodeNullTerminatedString();
// Print the decrypted and decoded message to the console
Console.WriteLine($"RECEIVED MESSAGE: {msg}");
}
catch (Exception ex)
{
Console.WriteLine($"An exception was encountered when receiving a message: {ex}");
}
}
}
// the send task dequeues messages, encrypts, and sends
// them to the server endpoint as UDP messages.
async Task SendTask()
{
while (!cancellationToken.IsCancellationRequested)
{
// wait for a message
await semaphore.WaitAsync();
messages.TryDequeue(out var payload);
// encrypt the message using the context. The message
// will be padded to the minimum configured message size.
var payloadBytes = Encoding.UTF8.GetBytes(payload);
var message = context.Send(payloadBytes);
// send as UDP message to the server endpoint.
await udp.SendAsync(message, serverEndpoint, cancellationToken);
Console.WriteLine($"SENT {payloadBytes.Length} bytes PAYLOAD, resulting in {message.Length} bytes ENCRYPTED MESSAGE");
}
}
// The console thread reades lines one at a time and
// enqueues them for sending.
var consoleReadThread = new Thread(_ =>
{
for (; ;)
{
messages.Enqueue(Console.ReadLine());
semaphore.Release();
}
});
// background threads are terminated when the program exits
consoleReadThread.IsBackground = true;
consoleReadThread.Start();
await Task.WhenAll(ReceiveTask(), SendTask());
}
}
public void ClientInitializationRestartTest()
{
// this test simulates a client timeout during initialization. When this
// happens the client will restart initialization. The test checks that
// the server and client will behave properly no matter at what point
// during initialization the packet was dropped.
BouncyCastleServices clientServices = new BouncyCastleServices(KeyGeneration.GeneratePrivateKey());
BouncyCastleServices serverServices = new BouncyCastleServices(KeyGeneration.GeneratePrivateKey());
for (int i = 0; i < 4; i++)
{
var client = new MicroRatchetContext(clientServices, true);
var server = new MicroRatchetContext(serverServices, false);
{
var clientInitPacket = client.InitiateInitialization();
if (i == 0)
{
goto restart;
}
var responsePacket = server.Receive(clientInitPacket).ToSendBack;
if (i == 1)
{
goto restart;
}
var firstPacket = client.Receive(responsePacket).ToSendBack;
if (i == 2)
{
goto restart;
}
var firstResponse = server.Receive(firstPacket).ToSendBack;
if (i == 3)
{
goto restart;
}
client.Receive(firstResponse);
}
restart:
{
var clientInitPacket = client.InitiateInitialization();
var responsePacket = server.Receive(clientInitPacket).ToSendBack;
var firstPacket = client.Receive(responsePacket).ToSendBack;
var firstResponse = server.Receive(firstPacket).ToSendBack;
var lastResult = client.Receive(firstResponse).ToSendBack;
Assert.Null(lastResult);
}
var rng = new RandomNumberGenerator();
byte[] message1 = rng.Generate(32);
byte[] message2 = rng.Generate(32);
var m1 = client.Send(message1);
var p1 = server.Receive(m1).Payload;
var m2 = server.Send(message2);
var p2 = client.Receive(m2).Payload;
Assert.Equal(message1, p1);
Assert.Equal(message2, p2);
}
}
public void HotReinitialization()
{
BouncyCastleServices clientServices = new BouncyCastleServices(KeyGeneration.GeneratePrivateKey());
BouncyCastleServices serverServices = new BouncyCastleServices(KeyGeneration.GeneratePrivateKey());
var client = new MicroRatchetContext(clientServices, true, 1000);
var server = new MicroRatchetContext(serverServices, false, 1000);
byte[] cs, ss;
// initialize
{
var clientInitPacket = client.InitiateInitialization();
var responsePacket = server.Receive(clientInitPacket).ToSendBack;
var firstPacket = client.Receive(responsePacket).ToSendBack;
var firstResponse = server.Receive(firstPacket).ToSendBack;
var lastResult = client.Receive(firstResponse).ToSendBack;
cs = client.SaveStateAsByteArray();
ss = server.SaveStateAsByteArray();
}
// now we're hot
client = new MicroRatchetContext(clientServices, true, 80, stateBytes: cs);
server = new MicroRatchetContext(serverServices, false, 80, stateBytes: ss);
{
RandomNumberGenerator rng = new RandomNumberGenerator();
byte[] message1 = rng.Generate(32);
byte[] message2 = rng.Generate(32);
byte[] message3 = rng.Generate(32);
var pl1 = client.Send(message1);
var pl2 = client.Send(message2);
var pl3 = client.Send(message3);
var r1 = server.Receive(pl1).Payload;
var r2 = server.Receive(pl2).Payload;
var r3 = server.Receive(pl3).Payload;
Assert.Equal(message1, r1);
Assert.Equal(message2, r2);
Assert.Equal(message3, r3);
cs = client.SaveStateAsByteArray();
ss = server.SaveStateAsByteArray();
}
// oh noes! Client fail! reinitialize
client = new MicroRatchetContext(clientServices, true, 1000);
server = new MicroRatchetContext(serverServices, false, 1000, stateBytes: ss);
{
var clientInitPacket = client.InitiateInitialization();
var responsePacket = server.Receive(clientInitPacket).ToSendBack;
var firstPacket = client.Receive(responsePacket).ToSendBack;
var firstResponse = server.Receive(firstPacket).ToSendBack;
var lastResult = client.Receive(firstResponse).ToSendBack;
cs = client.SaveStateAsByteArray();
ss = server.SaveStateAsByteArray();
}
// now we're hot AGAIN
client = new MicroRatchetContext(clientServices, true, 80, stateBytes: cs);
server = new MicroRatchetContext(serverServices, false, 80, stateBytes: ss);
{
RandomNumberGenerator rng = new RandomNumberGenerator();
byte[] message1 = rng.Generate(32);
byte[] message2 = rng.Generate(32);
byte[] message3 = rng.Generate(32);
var pl1 = client.Send(message1);
var pl2 = client.Send(message2);
var pl3 = client.Send(message3);
var r1 = server.Receive(pl1).Payload;
var r2 = server.Receive(pl2).Payload;
var r3 = server.Receive(pl3).Payload;
Assert.Equal(message1, r1);
Assert.Equal(message2, r2);
Assert.Equal(message3, r3);
cs = client.SaveStateAsByteArray();
ss = server.SaveStateAsByteArray();
}
}
public void ClientInitStateTest()
{
var clientServices = new BouncyCastleServices(KeyGeneration.GeneratePrivateKey());
var serverServices = new BouncyCastleServices(KeyGeneration.GeneratePrivateKey());
byte[] cs, ss;
RandomNumberGenerator rng = new RandomNumberGenerator();
byte[] message1 = rng.Generate(64);
byte[] message2 = rng.Generate(64);
byte[] message3 = rng.Generate(64);
var client = new MicroRatchetContext(clientServices, true);
var kex = clientServices.KeyAgreementFactory;
var clientInitPacket = client.InitiateInitialization();
cs = client.SaveStateAsByteArray();
{
var ts = ClientState.Load(cs, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, cs);
}
var server = new MicroRatchetContext(serverServices, false);
var responsePacket = server.Receive(clientInitPacket).ToSendBack;
ss = server.SaveStateAsByteArray();
{
var ts = ServerState.Load(ss, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, ss);
}
client = new MicroRatchetContext(clientServices, true, stateBytes: cs);
var firstPacket = client.Receive(responsePacket).ToSendBack;
cs = client.SaveStateAsByteArray();
{
var ts = ClientState.Load(cs, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, cs);
}
server = new MicroRatchetContext(serverServices, false, stateBytes: ss);
var firstResponse = server.Receive(firstPacket).ToSendBack;
ss = server.SaveStateAsByteArray();
{
var ts = ServerState.Load(ss, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, ss);
}
client = new MicroRatchetContext(clientServices, true, stateBytes: cs);
var lastResult = client.Receive(firstResponse).ToSendBack;
cs = client.SaveStateAsByteArray();
{
var ts = ClientState.Load(cs, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, cs);
}
client = new MicroRatchetContext(clientServices, true, 80, stateBytes: cs);
var pl1 = client.Send(message1);
cs = client.SaveStateAsByteArray();
{
var ts = ClientState.Load(cs, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, cs);
}
client = new MicroRatchetContext(clientServices, true, 80, stateBytes: cs);
var pl2 = client.Send(message2);
cs = client.SaveStateAsByteArray();
{
var ts = ClientState.Load(cs, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, cs);
}
client = new MicroRatchetContext(clientServices, true, 80, stateBytes: cs);
var pl3 = client.Send(message3);
cs = client.SaveStateAsByteArray();
{
var ts = ClientState.Load(cs, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, cs);
}
server = new MicroRatchetContext(serverServices, false, 80, stateBytes: ss);
var r1 = server.Receive(pl1).Payload;
ss = server.SaveStateAsByteArray();
{
var ts = ServerState.Load(ss, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, ss);
}
server = new MicroRatchetContext(serverServices, false, 80, stateBytes: ss);
var r2 = server.Receive(pl2).Payload;
ss = server.SaveStateAsByteArray();
{
var ts = ServerState.Load(ss, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, ss);
}
server = new MicroRatchetContext(serverServices, false, 80, stateBytes: ss);
var r3 = server.Receive(pl3).Payload;
ss = server.SaveStateAsByteArray();
{
var ts = ServerState.Load(ss, kex, ks).StoreAsByteArray(5);
Assert.Equal(ts, ss);
}
Assert.Equal(message1, r1);
Assert.Equal(message2, r2);
Assert.Equal(message3, r3);
Assert.Null(lastResult);
}
public void ReferenceTest1()
{
var message1 = new byte[] { 0x3c, 0x07, 0x3f, 0x70, 0xe7, 0xee, 0x7f, 0x88, 0x34, 0x14, 0x8e, 0x1a, 0xb8, 0xb4, 0xd4, 0x33 };
var message2 = new byte[] { 0x73, 0x17, 0xa6, 0x4a, 0x5c, 0xb5, 0x1c, 0x5f, 0xda, 0x61, 0x33, 0x4e, 0xde, 0x38, 0x54, 0x97, 0xc6, 0x95, 0x14, 0xc6, 0x4b, 0x60, 0xf8, 0xd5, 0x32, 0x37, 0x38, 0xc8, 0x01, 0x38, 0x28, 0x8b };
var message3 = new byte[] { 0x32, 0x12, 0x57, 0x18, 0x87, 0xa2, 0x26, 0x2a, 0x91, 0x3e, 0xf1, 0xa5, 0x07, 0x76, 0x0f, 0x6d, 0xa2, 0x09, 0x6a, 0x7b, 0xa4, 0x59, 0x5d, 0xc6, 0x2b, 0xca, 0x0e, 0xce, 0xd2, 0xf7, 0xb3, 0x4f, 0x01, 0x52, 0x1c, 0x07, 0x59, 0x06, 0x7b, 0x2a, 0x4c, 0x57, 0xeb, 0x45, 0x64, 0x37, 0x9c, 0xe5, 0x22, 0xcd, 0x77, 0x19, 0x29, 0xe3, 0x6e, 0x21, 0xbf, 0x11, 0x40, 0x6a, 0x89, 0xc8, 0x8f, 0xb0, 0x2b, 0x8e, 0x2a, 0x33, 0x2c, 0xce, 0x24, 0x9f, 0xed, 0xec, 0x3a, 0x50, 0xae, 0x69, 0xcd, 0x99, 0xac, 0x92, 0xd7, 0xaa, 0xe7, 0xca, 0xbf, 0x7b, 0xc4, 0x36, 0xd7, 0xd8, 0x16, 0xf4, 0x59, 0x30, 0xc4, 0x8c, 0x10, 0x66, 0x6a, 0xb6, 0xf2, 0x18, 0x69, 0x8c, 0xae, 0x38, 0x32, 0x54, 0x12, 0xcb, 0x5c, 0xc7, 0x92, 0x3b, 0x3a, 0x71, 0xa4, 0xfd, 0x81, 0x46, 0xf6, 0x7d, 0xf9, 0x97, 0xeb, 0xf2, 0x5c, 0xfc, 0x4f, 0x3c, 0x9c, 0x6f, 0xd8, 0x42, 0x24, 0x11, 0x16, 0xbd, 0xaa, 0x38, 0x0f, 0x0e, 0xe2, 0x92, 0x83, 0x54, 0x0f, 0xd3, 0x6e, 0xe5, 0x2a, 0x36, 0x77, 0x14, 0x80, 0x5e, 0xf9, 0x1f, 0x5b, 0xd0, 0xb5, 0xb5, 0x57, 0x5b, 0xf1, 0x79, 0xf8, 0x30, 0x74, 0xb6, 0xbf, 0xcb, 0x4c, 0x66, 0x32, 0xeb, 0x3a, 0xed, 0x80, 0x5b, 0xd6, 0xd8, 0x57, 0xf8, 0xec, 0xf8, 0x53, 0x05, 0x9a, 0xcc, 0x7b, 0x73, 0x9a, 0xfc, 0xe3, 0x40, 0xef, 0xbb, 0x96, 0x7a, 0x98, 0x9d, 0x73, 0x1b, 0x88, 0x40, 0xbd, 0x94, 0xfc, 0x21, 0x0b, 0x0c, 0xba, 0xf6, 0xc8, 0x53, 0x3a, 0xdf, 0x1a, 0x87, 0xdc, 0xfe, 0x15, 0xa7, 0xbc, 0x0e, 0x3b, 0x3a, 0x67, 0x3b, 0x40, 0xfd, 0xab, 0xa8, 0x75, 0xa0, 0xbf, 0x6a };
var randomC = new byte[] { 0xd4, 0xf7, 0xd4, 0x89, 0x86, 0xdc, 0x90, 0xc8, 0x62, 0x5b, 0xb7, 0x8d, 0xc5, 0x25, 0x51, 0xd4, 0xc2, 0x1d, 0xf7, 0x81, 0x97, 0x33, 0x27, 0x6c, 0x37, 0x00, 0x8d, 0x3e, 0xf3, 0x27, 0xf8, 0xfe, 0x94, 0x44, 0xa0, 0x7f, 0xec, 0xb6, 0x35, 0xe4, 0x4a, 0xb8, 0xaf, 0x49, 0x87, 0x48, 0xfd, 0x6c, 0xdf, 0x77, 0x21, 0xbe, 0xfa, 0xfa, 0x3b, 0x3a, 0x3a, 0x40, 0x4c, 0x39, 0x06, 0xc6, 0x87, 0xcf, 0xc2, 0xff, 0xc0, 0x1e, 0xa2, 0x4e, 0x95, 0xc4, 0x45, 0xc1, 0xb1, 0x88, 0x2d, 0x78, 0x6d, 0xc6, 0xca, 0x4f, 0xf4, 0xff, 0x4e, 0xe3, 0x49, 0x8a, 0x07, 0x0d, 0x08, 0x11, 0xb4, 0xed, 0x19, 0xa3, 0xdb, 0xa8, 0x02, 0x4f, 0x3c, 0x1e, 0x39, 0xb0, 0x29, 0xc6, 0xa9, 0x24, 0xdc, 0x2d, 0x94, 0xf6, 0x08, 0x40, 0x29, 0xab, 0x9c, 0x48, 0xe9, 0x6f, 0x2b, 0x7e, 0xc1, 0xd8, 0x93, 0xde, 0x33, 0x51, 0x69, 0xcd, 0xf3, 0x91, 0xd9, 0x29, 0xa7, 0x96, 0x29, 0xdb, 0xc3, 0xcb, 0xa2, 0xa4, 0x40, 0x52, 0x83, 0x77, 0x5b, 0x48, 0xb5, 0xbf, 0xb7, 0xde, 0x78, 0x1e, 0xc3, 0xcb, 0xb6, 0x04, 0x97, 0xf6, 0x0f, 0x4b, 0x94, 0xc8, 0xc6, 0xa6, 0x6d, 0x6c, 0x09, 0x45, 0x72, 0x7e, 0x07, 0x1d, 0xc5, 0x77, 0xc8, 0x48, 0x21, 0xa2, 0xba, 0xad, 0xe0, 0x4d, 0xef, 0x4b, 0x4c, 0x55, 0x18, 0xed, 0x52, 0x32, 0x67, 0xea, 0x8d, 0x40, 0x2c, 0xab, 0x59, 0x96, 0x30, 0x49, 0x90, 0xb5, 0x19, 0xef, 0x86, 0xf9, 0x2e, 0x20, 0xa3, 0x4b, 0x8a, 0xfd, 0xe2, 0x9a, 0xfa, 0x99, 0x45, 0x84, 0x72, 0x7f, 0x50, 0x49, 0x85, 0xda, 0x08, 0x3d, 0x7f, 0x0d, 0xe6, 0x0d, 0x35, 0x31, 0xa2, 0x24, 0xda, 0x42, 0x2f, 0x69, 0x58, 0x8b, 0x4a, 0x61, 0xaf, 0xb2, 0x11, 0x4c, 0x36, 0x1a, 0x67, 0x38, 0xc5, 0xd0, 0xac, 0x0c };
var randomS = new byte[] { 0xc9, 0x06, 0xbc, 0xd2, 0xe9, 0xdb, 0x8f, 0x5e, 0x47, 0x26, 0x91, 0xa0, 0xe4, 0xc9, 0xb3, 0x24, 0xf2, 0x9d, 0xfb, 0x2f, 0x33, 0xd7, 0x9c, 0x45, 0x1d, 0xc8, 0x68, 0xbf, 0x9a, 0xfa, 0xb6, 0x56, 0xa0, 0x1a, 0x84, 0xab, 0xdd, 0x53, 0xfc, 0x78, 0x46, 0x72, 0xdf, 0x3e, 0x49, 0x74, 0x76, 0x8c, 0xbf, 0xbf, 0x35, 0x2f, 0xe9, 0xd9, 0x91, 0x54, 0x0c, 0x5d, 0x80, 0x46, 0xb5, 0xee, 0x85, 0x6c, 0xee, 0xf8, 0x4a, 0x66, 0x1f, 0xac, 0xe2, 0x08, 0x14, 0xf6, 0x84, 0xdd, 0xe7, 0xb2, 0x86, 0x77, 0xdf, 0xd2, 0x53, 0x74, 0xb6, 0xd3, 0xce, 0xb7, 0x61, 0xdd, 0x23, 0x46, 0x4d, 0xf8, 0xfc, 0x0c, 0x9b, 0x02, 0xf3, 0x6f, 0x3f, 0x2f, 0x9a, 0x52, 0xaa, 0xc5, 0x67, 0x11, 0xbf, 0x89, 0x97, 0xf5, 0xb9, 0xc4, 0x5d, 0x25, 0x49, 0x68, 0x57, 0x80, 0x07, 0x3c, 0x21, 0x5a, 0x25, 0xaf, 0x23, 0xbc, 0x46, 0x8b, 0xc7, 0x97, 0xbe, 0xe5, 0xec, 0xfc, 0xd1, 0x9e, 0xde, 0x7d, 0x37, 0xce, 0x5f, 0x2e, 0x76, 0x9c, 0x81, 0x72, 0xfb, 0xe9, 0x01, 0x37, 0xde, 0x3a, 0xb5, 0xf1, 0x02, 0xc5, 0x6d, 0x19, 0xce, 0xdf, 0xda, 0xbb, 0xb1, 0xaa, 0x05, 0xcd, 0x80, 0x78, 0xc4, 0x1e, 0x72, 0x21, 0x72, 0x28, 0xe4, 0xce, 0xe1, 0x3b, 0x58, 0x66, 0x5b, 0x18, 0xaa, 0xe0, 0x12, 0x00, 0xfe, 0x11, 0xcf, 0x41, 0x8e, 0xc0, 0x89, 0xa2, 0x9d, 0x7c, 0x55, 0x78, 0x0b, 0x03, 0xb9, 0x63, 0x50, 0x2d, 0x44, 0x90, 0xd1, 0xf1, 0x36, 0xc9, 0x04, 0x8f, 0xcc, 0x1b, 0xc2, 0xef, 0x76, 0x3b, 0x11, 0x77, 0x59, 0xf4, 0x5b, 0xea, 0xdf, 0x56, 0xd4, 0x81, 0x8b, 0x36, 0xfd, 0x02, 0x06, 0xf1, 0x41, 0x4f, 0x47, 0xbc, 0x59, 0x57, 0x31, 0x9a, 0x1b, 0xfa, 0x8a, 0xf9, 0xd8, 0x3e, 0x0c, 0x28, 0x2c, 0xb1, 0xc2, 0x1d };
var applicationKey = new byte[] { 0xef, 0x3f, 0xb4, 0x74, 0xe1, 0x41, 0x07, 0x76, 0xe5, 0xbf, 0x85, 0x94, 0xd2, 0x95, 0xb0, 0x5f, 0x3e, 0x04, 0xe2, 0x21, 0xce, 0x5a, 0x3e, 0xf3, 0xee, 0x40, 0xca, 0x33, 0x24, 0x78, 0xbb, 0x78 };
var privateKeyC = new byte[] { 0x47, 0x3e, 0x33, 0x6b, 0xa2, 0xc7, 0xfb, 0xae, 0xc3, 0x9f, 0x38, 0xd6, 0x2e, 0x3e, 0x8d, 0xda, 0xc8, 0x8f, 0x09, 0x0f, 0xb6, 0xbe, 0x85, 0xd7, 0x3c, 0xc5, 0xf6, 0x11, 0x39, 0xa6, 0x3b, 0xb0 };
var privateKeyS = new byte[] { 0x69, 0xb2, 0x36, 0x09, 0x02, 0x55, 0x3c, 0xf8, 0x65, 0x79, 0x79, 0xfb, 0xea, 0xc6, 0xcf, 0x80, 0x2d, 0x49, 0xd1, 0x30, 0x73, 0xd9, 0xa7, 0x11, 0x48, 0x4f, 0x42, 0x9f, 0x85, 0x12, 0x11, 0x40 };
//var rng = new RandomNumberGenerator();
//message1 = rng.Generate(16);
//message2 = rng.Generate(32);
//message3 = rng.Generate(256 - 16);
//randomC = rng.Generate(256);
//randomS = rng.Generate(256);
//applicationKey = rng.Generate(32);
//privateKeyC = KeyGeneration.GeneratePrivateKey();
//privateKeyS = KeyGeneration.GeneratePrivateKey();
//BytePrintHelper.PrintAsByteArray(nameof(message1), message1);
//BytePrintHelper.PrintAsByteArray(nameof(message2), message2);
//BytePrintHelper.PrintAsByteArray(nameof(message3), message3);
//BytePrintHelper.PrintAsByteArray(nameof(randomC), randomC);
//BytePrintHelper.PrintAsByteArray(nameof(randomS), randomS);
//BytePrintHelper.PrintAsByteArray(nameof(applicationKey), applicationKey);
//BytePrintHelper.PrintAsByteArray(nameof(privateKeyC), privateKeyC);
//BytePrintHelper.PrintAsByteArray(nameof(privateKeyS), privateKeyS);
var ec1 = new byte[] { 0xd4, 0xf7, 0xd4, 0x89, 0x86, 0xdc, 0x90, 0xc8, 0x62, 0x5b, 0xb7, 0x8d, 0xc5, 0x25, 0x51, 0xd4, 0xb1, 0x4b, 0xdd, 0x0d, 0x6f, 0xda, 0x36, 0x98, 0x3e, 0xb9, 0xd0, 0x1e, 0x90, 0x93, 0x7d, 0x7c, 0x3d, 0x96, 0x17, 0xe1, 0x9e, 0x13, 0xa8, 0xec, 0x29, 0x7f, 0xac, 0x75, 0xaf, 0xff, 0x65, 0xf7, 0x1a, 0xf8, 0xc3, 0x52, 0xa1, 0xb7, 0x6f, 0x8d, 0x37, 0x1b, 0xc5, 0xec, 0x53, 0x18, 0xfe, 0x42, 0x1e, 0x21, 0xf1, 0xf2, 0xbc, 0x36, 0x45, 0xee, 0xe4, 0x12, 0xb9, 0xb2, 0xac, 0x7e, 0x46, 0xd0, 0xe9, 0x7f, 0x43, 0xf3, 0xa9, 0xe8, 0xa5, 0xec, 0xf4, 0xcf, 0xa9, 0x27, 0x16, 0x72, 0x30, 0xd4, 0xb0, 0x42, 0x31, 0x71, 0xa5, 0xfc, 0xe6, 0x52, 0xe5, 0x56, 0x62, 0x26, 0x64, 0x3e, 0xe7, 0xa3, 0x39, 0x0a, 0x1f, 0x24, 0x2a, 0xac, 0xf8, 0xb5, 0x37, 0x2e, 0x1e, 0x90, 0x80, 0x36, 0x17, 0x2c, 0x71, 0x17, 0x31, 0xac, 0x25, 0x23, 0xdb, 0x2a, 0x2c, 0x42, 0x1e, 0x29, 0x34, 0x4c, 0x1b, 0x2d, 0xe9, 0x2c, 0x41, 0x81, 0xef, 0x95, 0x62, 0xeb, 0x95, 0xa0, 0x64, 0xf1 };
var es2 = new byte[] { 0xc9, 0x06, 0xbc, 0xd2, 0xe9, 0xdb, 0x8f, 0x5e, 0x47, 0x26, 0x91, 0xa0, 0xe4, 0xc9, 0xb3, 0x24, 0x4a, 0xb3, 0x7d, 0xdc, 0x64, 0x3b, 0x1e, 0xb2, 0xa9, 0xc6, 0xcb, 0xba, 0x5c, 0x56, 0x26, 0x0e, 0x19, 0x39, 0x9f, 0x09, 0xa5, 0x36, 0xfc, 0x44, 0x76, 0xfc, 0x8d, 0xb6, 0x1d, 0xdd, 0x20, 0x2e, 0xd4, 0xf7, 0xd4, 0x89, 0x86, 0xdc, 0x90, 0xc8, 0x62, 0x5b, 0xb7, 0x8d, 0xc5, 0x25, 0x51, 0xd4, 0x6a, 0x42, 0x9b, 0x65, 0x66, 0xe3, 0x63, 0xe5, 0xe2, 0x9c, 0xe9, 0x36, 0xb3, 0xd6, 0xaf, 0xd0, 0xa6, 0x02, 0x38, 0x4e, 0xdf, 0x86, 0x7d, 0xf2, 0x8a, 0xfe, 0xf4, 0x5d, 0xe5, 0x87, 0xd9, 0x0e, 0x52, 0xd1, 0x12, 0x1b, 0xe5, 0x67, 0x5f, 0xec, 0xda, 0x61, 0x74, 0x70, 0x6d, 0x2c, 0x0e, 0x52, 0x87, 0x84, 0x9f, 0xcd, 0x25, 0x04, 0xc8, 0x6e, 0x87, 0xbf, 0x0a, 0x09, 0x2e, 0x31, 0x89, 0x12, 0xb8, 0x6d, 0x9e, 0x99, 0xee, 0xf5, 0x79, 0xb6, 0x98, 0xac, 0x4a, 0xe3, 0xb2, 0x12, 0xf4, 0xcb, 0xf0, 0xaa, 0xc8, 0x50, 0xf1, 0x40, 0xcb, 0x04, 0x73, 0xb6, 0x38, 0x5d, 0xbc, 0xcb, 0xbd, 0xff, 0xf9, 0xbb, 0xdc, 0x67, 0x78, 0xed, 0xd9, 0xbb, 0x52, 0x72, 0x3e, 0x1b, 0xe9, 0x20, 0x87, 0x79, 0x09, 0xfc, 0x29, 0xbf, 0x4e, 0x62, 0x9c, 0x13, 0x31, 0x21, 0xc9, 0x71, 0xd2, 0x66, 0x5e, 0x47, 0xca, 0xee, 0xa2, 0x5f, 0x4a, 0x95, 0xb3, 0x67, 0x36, 0x00, 0x73, 0x19, 0x4f, 0x86, 0xab, 0xf1, 0x3e, 0xd4, 0xce, 0x0c, 0x9a, 0xf3, 0x68, 0x03, 0x8a, 0x36, 0x79, 0x6e, 0xb6, 0x0a, 0x7d, 0x59, 0x64, 0xf1, 0xd0, 0x32, 0xa9, 0x40, 0x94, 0x93, 0x71, 0x5e, 0x36, 0x72 };
var ec3 = new byte[] { 0xa0, 0xd7, 0xb7, 0xfa, 0x7e, 0x1b, 0xbc, 0xad, 0xce, 0x9b, 0x4b, 0xdd, 0xfc, 0x27, 0x3f, 0x06, 0x2e, 0xef, 0x91, 0xf3, 0x4e, 0x5b, 0xd9, 0xfd, 0x86, 0x81, 0x4f, 0x1f, 0xa9, 0x3f, 0x26, 0xd4, 0x0d, 0xdc, 0x48, 0x5c, 0x0b, 0xe8, 0xbf, 0x70, 0xa5, 0xe2, 0xc5, 0xa9, 0x62, 0xde, 0xf9, 0x0b, 0xbc, 0xe6, 0xcd, 0x9a, 0x47, 0x4c, 0x99, 0xa8, 0xe8, 0x11, 0x9c, 0x00, 0x0d, 0x80, 0x68, 0xdf };
var es4 = new byte[] { 0x29, 0xa8, 0xbb, 0x57, 0x5f, 0xa5, 0x00, 0x07, 0x8a, 0x4a, 0x56, 0x47, 0x2b, 0xc5, 0x50, 0x3f, 0x3b, 0x7f, 0xe8, 0x5d, 0x6e, 0x7f, 0x8d, 0x5e, 0x98, 0x68, 0x90, 0x9a, 0x2c, 0x5b, 0xb9, 0x89 };
var ec6 = new byte[] { 0x29, 0x3f, 0x3d, 0x0f, 0xf8, 0xad, 0x1f, 0xe2, 0x17, 0x69, 0x8f, 0x26, 0xf4, 0x40, 0xe0, 0x87, 0x25, 0xe1, 0xcc, 0x1b, 0x91, 0x89, 0x70, 0x88, 0x38, 0xbc, 0x49, 0x90, 0x2f, 0x68, 0x9f, 0xb2, 0xcc, 0x3b, 0x43, 0xd7, 0xea, 0x95, 0xf7, 0xd3, 0x53, 0x44, 0x41, 0x7b, 0x80, 0x0c, 0xe5, 0x2d, 0x8d, 0x97, 0x29, 0x40, 0xac, 0xd0, 0x5d, 0xbd, 0xea, 0xec, 0xaf, 0xa3, 0xcb, 0x7a, 0x77, 0x77 };
var es7 = new byte[] { 0x3c, 0x07, 0x3f, 0x70, 0xe7, 0xee, 0x7f, 0x88, 0x34, 0x14, 0x8e, 0x1a, 0xb8, 0xb4, 0xd4, 0x33 };
var es8 = new byte[] { 0x17, 0x57, 0x08, 0x06, 0xa3, 0x70, 0x18, 0xf2, 0xda, 0xaf, 0x2e, 0x87, 0x7d, 0xc8, 0xa5, 0x3e, 0xc2, 0xcb, 0x63, 0x40, 0xaa, 0x9a, 0xfb, 0xd7, 0x9a, 0x7b, 0xca, 0xe5, 0xfe, 0x3e, 0xed, 0x04, 0xaf, 0x56, 0x97, 0x2c, 0x9e, 0x3a, 0xea, 0xaa, 0x68, 0x9b, 0x4d, 0xd8, 0x9f, 0xe7, 0x25, 0x15, 0xb5, 0xf6, 0x69, 0x1a, 0xde, 0x61, 0xe2, 0x6e, 0xe9, 0x19, 0xd7, 0x4b, 0x05, 0x01, 0xaf, 0x3d, 0x0d, 0x2b, 0x35, 0x9a, 0xf3, 0x2c, 0xee, 0xeb, 0x0a, 0x68, 0x47, 0xe5, 0xd2, 0xf2, 0xee, 0x90 };
var ec9 = new byte[] { 0x73, 0x17, 0xa6, 0x4a, 0x5c, 0xb5, 0x1c, 0x5f, 0xda, 0x61, 0x33, 0x4e, 0xde, 0x38, 0x54, 0x97, 0xc6, 0x95, 0x14, 0xc6, 0x4b, 0x60, 0xf8, 0xd5, 0x32, 0x37, 0x38, 0xc8, 0x01, 0x38, 0x28, 0x8b };
var ec10 = new byte[] { 0xf7, 0x11, 0x86, 0xd0, 0x87, 0x67, 0xf2, 0xf1, 0x98, 0x75, 0xe4, 0x12, 0xd6, 0xff, 0x75, 0x4d, 0xfd, 0x23, 0x8a, 0xf8, 0x71, 0x00, 0x0f, 0xe1, 0x19, 0x74, 0x17, 0x0d, 0xc0, 0xf1, 0xb1, 0x75, 0x2b, 0x74, 0xf7, 0x5e, 0xd2, 0x58, 0x01, 0x2a, 0xa4, 0x39, 0x51, 0xe3, 0x6f, 0x5b, 0x24, 0x01, 0x19, 0x86, 0x9a, 0xf6, 0x8c, 0x37, 0x43, 0xb1, 0xfd, 0x0a, 0xc0, 0x37, 0xd0, 0x02, 0x0a, 0xc8, 0x1c, 0x74, 0x2b, 0x26, 0x17, 0xde, 0x34, 0x0a, 0x21, 0x8b, 0xda, 0x1f, 0xae, 0x19, 0x81, 0x14, 0x97, 0x60, 0x62, 0x38, 0x48, 0xb0, 0x99, 0x3e, 0x82, 0x19, 0xad, 0xdd, 0xb3, 0x4e, 0x63, 0x9f, 0x4f, 0x25, 0xe7, 0x43, 0xe7, 0x30, 0x1b, 0xde, 0x14, 0x8b, 0x55, 0xd7, 0xe9, 0x69, 0x75, 0x03, 0x36, 0xce, 0xd7, 0xab, 0x00, 0x4e, 0x1c, 0xaa, 0xfd, 0xd7, 0x35, 0x1f, 0x45, 0x79, 0x02, 0x7a, 0x86, 0x1c, 0x7b, 0x1e, 0xbc, 0x13, 0x1f, 0xa6, 0x1e, 0x10, 0x27, 0xcd, 0xb4, 0x20, 0x8d, 0xbd, 0x1e, 0xe1, 0x6b, 0xe2, 0xfb, 0xfd, 0xc5, 0x54, 0xf5, 0x70, 0x54, 0xb9, 0xe2, 0x53, 0xe0, 0x5a, 0x7b, 0xed, 0x0a, 0x7e, 0x24, 0xa8, 0x39, 0x42, 0x5b, 0xa3, 0x90, 0x81, 0x96, 0x15, 0x97, 0xd0, 0x0a, 0x5f, 0x4a, 0x33, 0xfb, 0x1b, 0x73, 0x29, 0x09, 0xa4, 0x8d, 0xb9, 0xcc, 0xf5, 0xcd, 0x5f, 0x0b, 0x41, 0xf2, 0xf7, 0xd1, 0xc9, 0xab, 0x9f, 0x4d, 0x63, 0x38, 0xaa, 0x68, 0x52, 0xcc, 0xe9, 0x3d, 0x72, 0x68, 0xcf, 0xa9, 0x96, 0x9b, 0xa8, 0x63, 0xb3, 0xa9, 0xb2, 0x44, 0x70, 0x92, 0x7d, 0x1c, 0x51, 0x30, 0xb0, 0x3a, 0xd2, 0x28, 0xb1, 0x02, 0x01, 0xf0, 0x0d, 0x28, 0x35, 0x5d, 0x44, 0x3a, 0x1d, 0xc9, 0xc4, 0xc5, 0x1a, 0x3d, 0xd4, 0xdf, 0xb6, 0x1b, 0xbb, 0xb8, 0x38, 0x95, 0xde };
var es11 = new byte[] { 0x32, 0x12, 0x57, 0x18, 0x87, 0xa2, 0x26, 0x2a, 0x91, 0x3e, 0xf1, 0xa5, 0x07, 0x76, 0x0f, 0x6d, 0xa2, 0x09, 0x6a, 0x7b, 0xa4, 0x59, 0x5d, 0xc6, 0x2b, 0xca, 0x0e, 0xce, 0xd2, 0xf7, 0xb3, 0x4f, 0x01, 0x52, 0x1c, 0x07, 0x59, 0x06, 0x7b, 0x2a, 0x4c, 0x57, 0xeb, 0x45, 0x64, 0x37, 0x9c, 0xe5, 0x22, 0xcd, 0x77, 0x19, 0x29, 0xe3, 0x6e, 0x21, 0xbf, 0x11, 0x40, 0x6a, 0x89, 0xc8, 0x8f, 0xb0, 0x2b, 0x8e, 0x2a, 0x33, 0x2c, 0xce, 0x24, 0x9f, 0xed, 0xec, 0x3a, 0x50, 0xae, 0x69, 0xcd, 0x99, 0xac, 0x92, 0xd7, 0xaa, 0xe7, 0xca, 0xbf, 0x7b, 0xc4, 0x36, 0xd7, 0xd8, 0x16, 0xf4, 0x59, 0x30, 0xc4, 0x8c, 0x10, 0x66, 0x6a, 0xb6, 0xf2, 0x18, 0x69, 0x8c, 0xae, 0x38, 0x32, 0x54, 0x12, 0xcb, 0x5c, 0xc7, 0x92, 0x3b, 0x3a, 0x71, 0xa4, 0xfd, 0x81, 0x46, 0xf6, 0x7d, 0xf9, 0x97, 0xeb, 0xf2, 0x5c, 0xfc, 0x4f, 0x3c, 0x9c, 0x6f, 0xd8, 0x42, 0x24, 0x11, 0x16, 0xbd, 0xaa, 0x38, 0x0f, 0x0e, 0xe2, 0x92, 0x83, 0x54, 0x0f, 0xd3, 0x6e, 0xe5, 0x2a, 0x36, 0x77, 0x14, 0x80, 0x5e, 0xf9, 0x1f, 0x5b, 0xd0, 0xb5, 0xb5, 0x57, 0x5b, 0xf1, 0x79, 0xf8, 0x30, 0x74, 0xb6, 0xbf, 0xcb, 0x4c, 0x66, 0x32, 0xeb, 0x3a, 0xed, 0x80, 0x5b, 0xd6, 0xd8, 0x57, 0xf8, 0xec, 0xf8, 0x53, 0x05, 0x9a, 0xcc, 0x7b, 0x73, 0x9a, 0xfc, 0xe3, 0x40, 0xef, 0xbb, 0x96, 0x7a, 0x98, 0x9d, 0x73, 0x1b, 0x88, 0x40, 0xbd, 0x94, 0xfc, 0x21, 0x0b, 0x0c, 0xba, 0xf6, 0xc8, 0x53, 0x3a, 0xdf, 0x1a, 0x87, 0xdc, 0xfe, 0x15, 0xa7, 0xbc, 0x0e, 0x3b, 0x3a, 0x67, 0x3b, 0x40, 0xfd, 0xab, 0xa8, 0x75, 0xa0, 0xbf, 0x6a };
var configC = new MicroRatchetConfiguration
{
IsClient = true,
MaximumMessageSize = 256,
MinimumMessageSize = 32,
ApplicationKey = applicationKey
};
var configS = new MicroRatchetConfiguration
{
IsClient = false,
MaximumMessageSize = 256,
MinimumMessageSize = 32,
ApplicationKey = applicationKey
};
var rngC = new FakeRandomNumberGenerator(randomC);
var signatureC = new Signature(privateKeyC, new SecureRandom(rngC));
var rngS = new FakeRandomNumberGenerator(randomS);
var signatureS = new Signature(privateKeyS, new SecureRandom(rngS));
var servicesC = new BouncyCastleServices(privateKeyC)
{
Signature = signatureC,
RandomNumberGenerator = rngC,
};
servicesC.KeyAgreementFactory = new DeterministicKexFac(servicesC.KeyAgreementFactory, rngC);
var servicesS = new BouncyCastleServices(privateKeyS)
{
Signature = signatureS,
RandomNumberGenerator = rngS,
};
servicesS.KeyAgreementFactory = new DeterministicKexFac(servicesS.KeyAgreementFactory, rngS);
var C = new MicroRatchetContext(servicesC, configC, null);
var S = new MicroRatchetContext(servicesS, configS, null);
var c1 = C.InitiateInitialization();
var s2 = S.Receive(c1).ToSendBack;
var c3 = C.Receive(s2).ToSendBack;
var s4 = S.Receive(c3).ToSendBack;
var c5 = C.Receive(s4).ToSendBack;
//BytePrintHelper.PrintAsByteArray("ec1", c1);
//BytePrintHelper.PrintAsByteArray("es2", s2);
//BytePrintHelper.PrintAsByteArray("ec3", c3);
//BytePrintHelper.PrintAsByteArray("es4", s4);
Assert.Equal(ec1, c1);
Assert.Equal(es2, s2);
Assert.Equal(ec3, c3);
Assert.Equal(es4, s4);
Assert.Null(c5);
var c6 = C.Send(message1);
var s7 = S.Receive(c6).Payload;
var s8 = S.Send(message2);
var c9 = C.Receive(s8).Payload;
var c10 = C.Send(message3);
var s11 = S.Receive(c10).Payload;
//BytePrintHelper.PrintAsByteArray("ec6", c6);
//BytePrintHelper.PrintAsByteArray("es7", s7);
//BytePrintHelper.PrintAsByteArray("es8", s8);
//BytePrintHelper.PrintAsByteArray("ec9", c9);
//BytePrintHelper.PrintAsByteArray("ec10", c10);
//BytePrintHelper.PrintAsByteArray("es11", s11);
Assert.Equal(ec6, c6);
Assert.Equal(es7, s7);
Assert.Equal(es8, s8);
Assert.Equal(ec9, c9);
Assert.Equal(ec10, c10);
Assert.Equal(es11, s11);
Assert.Equal(message1, s7);
Assert.Equal(message2, c9);
Assert.Equal(message3, s11);
}
public void ClientMessagesReinstantiation()
{
var clientServices = new BouncyCastleServices(KeyGeneration.GeneratePrivateKey());
var serverServices = new BouncyCastleServices(KeyGeneration.GeneratePrivateKey());
RandomNumberGenerator rng = new RandomNumberGenerator();
byte[] message1 = rng.Generate(64);
byte[] message2 = rng.Generate(64);
byte[] message3 = rng.Generate(64);
byte[] s, c;
var client = new MicroRatchetContext(clientServices, true);
var clientInitPacket = client.InitiateInitialization();
c = client.SaveStateAsByteArray();
var server = new MicroRatchetContext(serverServices, false);
var responsePacket = server.Receive(clientInitPacket).ToSendBack;
s = server.SaveStateAsByteArray();
client = new MicroRatchetContext(clientServices, true, stateBytes: c);
var firstPacket = client.Receive(responsePacket).ToSendBack;
c = client.SaveStateAsByteArray();
server = new MicroRatchetContext(serverServices, false, stateBytes: s);
var firstResponse = server.Receive(firstPacket).ToSendBack;
s = server.SaveStateAsByteArray();
client = new MicroRatchetContext(clientServices, true, stateBytes: c);
var lastResult = client.Receive(firstResponse).ToSendBack;
c = client.SaveStateAsByteArray();
client = new MicroRatchetContext(clientServices, true, 80, stateBytes: c);
var pl1 = client.Send(message1);
c = client.SaveStateAsByteArray();
client = new MicroRatchetContext(clientServices, true, 80, stateBytes: c);
var pl2 = client.Send(message2);
c = client.SaveStateAsByteArray();
client = new MicroRatchetContext(clientServices, true, 80, stateBytes: c);
var pl3 = client.Send(message3);
c = client.SaveStateAsByteArray();
server = new MicroRatchetContext(serverServices, false, 80, stateBytes: s);
var r1 = server.Receive(pl1).Payload;
s = server.SaveStateAsByteArray();
server = new MicroRatchetContext(serverServices, false, 80, stateBytes: s);
var r2 = server.Receive(pl2).Payload;
s = server.SaveStateAsByteArray();
server = new MicroRatchetContext(serverServices, false, 80, stateBytes: s);
var r3 = server.Receive(pl3).Payload;
s = server.SaveStateAsByteArray();
Assert.Equal(message1, r1);
Assert.Equal(message2, r2);
Assert.Equal(message3, r3);
Assert.Null(lastResult);
}