private static TLString GetEncryptedClientDHInnerData(TLClientDHInnerData clientDHInnerData, WindowsPhone.Tuple <byte[], byte[]> aesParams)
{
var random = new Random();
var client_DH_inner_data = clientDHInnerData.ToBytes();
var client_DH_inner_dataWithHash = TLUtils.Combine(Utils.ComputeSHA1(client_DH_inner_data), client_DH_inner_data);
var addedBytesLength = 16 - (client_DH_inner_dataWithHash.Length % 16);
if (addedBytesLength > 0 && addedBytesLength < 16)
{
var addedBytes = new byte[addedBytesLength];
random.NextBytes(addedBytes);
client_DH_inner_dataWithHash = TLUtils.Combine(client_DH_inner_dataWithHash, addedBytes);
//TLUtils.WriteLine(string.Format("Added {0} bytes", addedBytesLength));
}
var aesEncryptClientDHInnerDataWithHash = Utils.AesIge(client_DH_inner_dataWithHash, aesParams.Item1, aesParams.Item2, true);
return(TLString.FromBigEndianData(aesEncryptClientDHInnerDataWithHash));
}
private static TLPQInnerData GetInnerData(TLInt dcId, TLResPQ resPQ, TLInt256 newNonce, out TimeSpan calcTime, out WindowsPhone.Tuple <ulong, ulong> pqPair)
{
var pq = BitConverter.ToUInt64(resPQ.PQ.Data.Reverse().ToArray(), 0);
TLUtils.WriteLine("pq: " + pq);
var pqCalcTime = Stopwatch.StartNew();
try
{
pqPair = Utils.GetFastPQ(pq);
pqCalcTime.Stop();
calcTime = pqCalcTime.Elapsed;
TLUtils.WriteLineAtBegin("Pq Fast calculation time: " + pqCalcTime.Elapsed);
TLUtils.WriteLine("p: " + pqPair.Item1);
TLUtils.WriteLine("q: " + pqPair.Item2);
}
catch (Exception e)
{
pqCalcTime = Stopwatch.StartNew();
pqPair = Utils.GetPQPollard(pq);
pqCalcTime.Stop();
calcTime = pqCalcTime.Elapsed;
TLUtils.WriteLineAtBegin("Pq Pollard calculation time: " + pqCalcTime.Elapsed);
TLUtils.WriteLine("p: " + pqPair.Item1);
TLUtils.WriteLine("q: " + pqPair.Item2);
}
var p = TLString.FromUInt64(pqPair.Item1);
var q = TLString.FromUInt64(pqPair.Item2);
var innerData1 = new TLPQInnerDataDC
{
NewNonce = newNonce,
Nonce = resPQ.Nonce,
P = p,
Q = q,
PQ = resPQ.PQ,
ServerNonce = resPQ.ServerNonce,
DCId = dcId
};
return(innerData1);
}
