public byte[] Serialise()
{
byte[] result = new byte[32];
NetworkByteOrderConverter.WriteUInt32(result, 0, _UnixTime);
Array.Copy(_RandomBytes, 0, result, 4, 28);
return(result);
}
public byte[] CalculateCookie(EndPoint remoteEndPoint, byte[] secret)
{
if (remoteEndPoint == null)
{
throw new ArgumentNullException(nameof(remoteEndPoint));
}
if (secret == null)
{
throw new ArgumentNullException(nameof(secret));
}
//Cookie = HMAC(Secret, Client-IP, Client-Parameters)
//(version, random, session_id, cipher_suites, compression_method)
var result = new byte[32];
var socketAddress = remoteEndPoint.Serialize();
var socketAddressSize = socketAddress.Size;
var message = new byte[socketAddressSize + 34];
for (var index = 0; index < socketAddressSize; index++)
{
message[0] = socketAddress[index];
}
NetworkByteOrderConverter.WriteUInt32(message, socketAddressSize, this.Random.UnixTime);
Buffer.BlockCopy(this.Random.RandomBytes, 0, message, socketAddressSize + 4, 28);
var hmac = new HMACSHA256(secret);
var hash = hmac.ComputeHash(message);
Buffer.BlockCopy(hash, 0, result, 0, 32);
return(result);
}
public void Serialise(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
NetworkByteOrderConverter.WriteUInt32(stream, this.UnixTime);
stream.Write(this.RandomBytes, 0, 28);
}
public void Serialise(Stream stream, Version version)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
NetworkByteOrderConverter.WriteUInt32(stream, this.LifetimeHint);
if (this.Ticket == null)
{
NetworkByteOrderConverter.WriteUInt16(stream, 0);
}
else
{
NetworkByteOrderConverter.WriteUInt16(stream, this.Length);
stream.Write(this.Ticket, 0, this.Ticket.Length);
}
}
public byte[] CalculateCookie(EndPoint remoteEndPoint, byte[] secret)
{
//Cookie = HMAC(Secret, Client-IP, Client-Parameters)
//(version, random, session_id, cipher_suites, compression_method)
byte[] result = new byte[32];
SocketAddress socketAddress = remoteEndPoint.Serialize();
int socketAddressSize = socketAddress.Size;
byte[] message = new byte[socketAddressSize + 34];
for (int index = 0; index < socketAddressSize; index++)
{
message[0] = socketAddress[index];
}
NetworkByteOrderConverter.WriteUInt32(message, socketAddressSize, _Random.UnixTime);
Buffer.BlockCopy(_Random.RandomBytes, 0, message, socketAddressSize + 4, 28);
System.Security.Cryptography.HMACSHA256 hmac = new System.Security.Cryptography.HMACSHA256(secret);
byte[] hash = hmac.ComputeHash(message);
Buffer.BlockCopy(hash, 0, result, 0, 32);
return(result);
}
public void Serialise(System.IO.Stream stream)
{
NetworkByteOrderConverter.WriteUInt32(stream, _UnixTime);
stream.Write(_RandomBytes, 0, 28);
}
