private void KeyExchange(ref Byte encryptMode)
{
while (keyExchanging)
{
Thread.Sleep(1);
}
if (key != null || encryptMode == 0)
{
return;
}
if ((key == null) && keyExchanged)
{
encryptMode = 0;
return;
}
keyExchanging = true;
Hashtable result = POST("phprpc_encrypt=true&phprpc_keylen=" + keylen);
if (result.ContainsKey("phprpc_keylen"))
{
keylen = (UInt32)result["phprpc_keylen"];
}
else
{
keylen = 128;
}
if (result.ContainsKey("phprpc_encrypt"))
{
AssocArray encrypt = (AssocArray)Deserialize((Byte[])result["phprpc_encrypt"]);
BigInteger x = BigInteger.GenerateRandom((Int32)keylen - 1);
x.SetBit(keylen - 2);
BigInteger y = BigInteger.Parse(PHPConvert.ToString(encrypt["y"]));
BigInteger p = BigInteger.Parse(PHPConvert.ToString(encrypt["p"]));
BigInteger g = BigInteger.Parse(PHPConvert.ToString(encrypt["g"]));
if (keylen == 128)
{
this.key = new byte[16];
Byte[] k = y.ModPow(x, p).GetBytes();
for (Int32 i = 1, n = Math.Min(k.Length, 16); i <= n; i++)
{
this.key[16 - i] = k[n - i];
}
}
else
{
key = MD5.Hash(encoding.GetBytes(y.ModPow(x, p).ToString()));
}
POST("phprpc_encrypt=" + g.ModPow(x, p).ToString());
}
else
{
key = null;
keyExchanged = true;
encryptMode = 0;
}
keyExchanging = false;
}
public BigInteger GetP()
{
return(BigInteger.Parse(PHPConvert.ToString(dhParams["p"])));
}
private void NextKeyExchange(Object state)
{
RequestState requestState = state as RequestState;
Hashtable result = GetResponseBody(requestState.response, 0);
#if SILVERLIGHT
if (result.ContainsKey("phprpc_url"))
{
String phprpc_url = (String)result["phprpc_url"];
url = new Uri(phprpc_url);
if (url.Query == "")
{
url = new Uri(phprpc_url + "?phprpc_id=" + clientID);
}
else
{
url = new Uri(phprpc_url + "&phprpc_id=" + clientID);
}
}
#endif
if (result.ContainsKey("phprpc_keylen"))
{
keylen = (UInt32)result["phprpc_keylen"];
}
else
{
keylen = 128;
}
if (result.ContainsKey("phprpc_encrypt"))
{
AssocArray encrypt = (AssocArray)Deserialize((Byte[])result["phprpc_encrypt"]);
BigInteger x = BigInteger.GenerateRandom((Int32)keylen - 1);
x.SetBit(keylen - 2);
BigInteger y = BigInteger.Parse(PHPConvert.ToString(encrypt["y"]));
BigInteger p = BigInteger.Parse(PHPConvert.ToString(encrypt["p"]));
BigInteger g = BigInteger.Parse(PHPConvert.ToString(encrypt["g"]));
if (keylen == 128)
{
this.key = new byte[16];
Byte[] k = y.ModPow(x, p).GetBytes();
for (Int32 i = 1, n = Math.Min(k.Length, 16); i <= n; i++)
{
this.key[16 - i] = k[n - i];
}
}
else
{
key = MD5.Hash(encoding.GetBytes(y.ModPow(x, p).ToString()));
}
requestState = new RequestState();
requestState.bufferWrite = encoding.GetBytes("phprpc_encrypt=" + g.ModPow(x, p).ToString());
requestState.asyncCallback = new SendOrPostCallback(EndKeyExchange);
POST(requestState);
}
else
{
key = null;
requestState.encryptMode = 0;
keyExchanged = true;
EndKeyExchange(null);
}
}