private void secondHandshake()
{
byte [] preRequest = new byte [1];
byte [] request = new byte [24];
byte [] response = request;
preRequest [0] = TypeNewconn;
ulong privateKey;
ulong publicKey;
DH64 dh64 = new DH64();
dh64.KeyPair(out privateKey, out publicKey);
using (MemoryStream ms = new MemoryStream(request, 0, 8)) {
using (BinaryWriter w = new BinaryWriter(ms)) {
w.Write(publicKey);
}
}
_BaseStream.Write(preRequest, 0, preRequest.Length);
_BaseStream.Write(request, 0, 8);
for (int n = 24; n > 0;)
{
int x = _BaseStream.Read(response, 24 - n, n);
if (x == 0)
{
throw new EndOfStreamException();
}
n -= x;
}
ulong challengeCode = 0;
using (MemoryStream ms = new MemoryStream(response, 0, 24)) {
using (BinaryReader r = new BinaryReader(ms)) {
ulong serverPublicKey = r.ReadUInt64();
ulong secret = dh64.Secret(privateKey, serverPublicKey);
using (MemoryStream ms2 = new MemoryStream(_Key)) {
using (BinaryWriter w = new BinaryWriter(ms2)) {
w.Write(secret);
}
}
_ReadCipher = new RC4Cipher(_Key);
_WriteCipher = new RC4Cipher(_Key);
_ReadCipher.XORKeyStream(response, 8, response, 8, 8);
_ID = r.ReadUInt64();
using (MemoryStream ms2 = new MemoryStream(request, 0, 16)) {
using (BinaryWriter w = new BinaryWriter(ms2)) {
w.Write(response, 16, 8);
w.Write(_Key);
MD5 md5 = MD5CryptoServiceProvider.Create();
byte [] hash = md5.ComputeHash(request, 0, 16);
Buffer.BlockCopy(hash, 0, request, 0, hash.Length);
_BaseStream.Write(request, 0, 16);
}
}
}
}
}
private void handshake()
{
byte[] preRequest = new byte[1];
byte[] request = new byte[24];
byte[] response = request;
preRequest[0] = TypeNewconn;
ulong privateKey;
ulong publicKey;
DH64 dh64 = new DH64();
dh64.KeyPair(out privateKey, out publicKey);
using (MemoryStream ms = new MemoryStream(request, 0, 8)) {
using (BinaryWriter w = new BinaryWriter(ms)) {
w.Write(publicKey);
}
}
TcpClient client = new TcpClient(_Host.AddressFamily);
var ar = client.BeginConnect(_Host, _Port, null, null);
ar.AsyncWaitHandle.WaitOne(new TimeSpan(0, 0, 0, 0, ConnectTimeout));
if (!ar.IsCompleted)
{
throw new TimeoutException();
}
client.EndConnect(ar);
setBaseStream(client.GetStream());
_BaseStream.Write(preRequest, 0, preRequest.Length);
_BaseStream.Write(request, 0, 8);
for (int n = 24; n > 0;)
{
int x = _BaseStream.Read(response, 24 - n, n);
if (x == 0)
{
throw new EndOfStreamException();
}
n -= x;
}
ulong challengeCode = 0;
using (MemoryStream ms = new MemoryStream(response, 0, 24))
{
using (BinaryReader r = new BinaryReader(ms))
{
ulong serverPublicKey = r.ReadUInt64();
ulong secret = dh64.Secret(privateKey, serverPublicKey);
using (MemoryStream ms2 = new MemoryStream(_Key))
{
using (BinaryWriter w = new BinaryWriter(ms2))
{
w.Write(secret);
}
}
_ReadCipher = new RC4Cipher(_Key);
_WriteCipher = new RC4Cipher(_Key);
_ReadCipher.XORKeyStream(response, 8, response, 8, 8);
_ID = r.ReadUInt64();
using (MemoryStream ms2 = new MemoryStream(request, 0, 16))
{
using (BinaryWriter w = new BinaryWriter(ms2))
{
w.Write(response, 16, 8);
w.Write(_Key);
MD5 md5 = MD5CryptoServiceProvider.Create();
byte[] hash = md5.ComputeHash(request, 0, 16);
Buffer.BlockCopy(hash, 0, request, 0, hash.Length);
_BaseStream.Write(request, 0, 16);
}
}
}
}
}