private ReqDHParamsArgs CreateReqDhParamsArgs(ResPQ resPQ, out PQInnerData pqInnerData)
{
Int256 pq = resPQ.Pq.ToInt256(asLittleEndian: false);
Int256 p, q;
pq.GetPrimeMultipliers(out p, out q);
Int256 newNonce = _nonceGenerator.GetNonce(32).ToInt256();
pqInnerData = new PQInnerData
{
Pq = resPQ.Pq,
P = p.ToBytes(false, true),
Q = q.ToBytes(false, true),
Nonce = resPQ.Nonce,
ServerNonce = resPQ.ServerNonce,
NewNonce = newNonce
};
byte[] data = _tlRig.Serialize(pqInnerData);
byte[] dataHash = ComputeSHA1(data);
Debug.Assert((dataHash.Length + data.Length) <= 255);
// data_with_hash := SHA1(data) + data + (any random bytes); such that the length equal 255 bytes;
var dataWithHash = new byte[255];
using (var streamer = new TLStreamer(dataWithHash))
{
streamer.Write(dataHash);
streamer.Write(data);
streamer.WriteRandomDataTillEnd();
}
PublicKey publicKey = _keyChain.GetFirst(resPQ.ServerPublicKeyFingerprints);
if (publicKey == null)
{
throw new PublicKeyNotFoundException(resPQ.ServerPublicKeyFingerprints);
}
byte[] encryptedData = _encryptionServices.RSAEncrypt(dataWithHash, publicKey);
var reqDhParamsArgs = new ReqDHParamsArgs
{
Nonce = pqInnerData.Nonce,
ServerNonce = pqInnerData.ServerNonce,
P = pqInnerData.P,
Q = pqInnerData.Q,
PublicKeyFingerprint = publicKey.Fingerprint,
EncryptedData = encryptedData
};
return(reqDhParamsArgs);
}
//[TestCase("2852213850458175921094913949697", "51539607551", "55340232221128654847")]
//[TestCase("2253601067072664030639173111353", "2932031007403", "768614336404564651")]
//[TestCase("154866286100907105216716400854538488352313", "768614336404564651", "201487636602438195784363")]
//[TestCase("170277282318432095373149951383568233665261047797485113", "201487636602438195784363", "845100400152152934331135470251")]
//[TestCase("47928794074934470746074693488053803551576675688093033978263006055993", "845100400152152934331135470251", "56713727820156410577229101238628035243")]
public void Should_get_prime_multipliers_for_Int256(string pqS, string expectedPs, string expectedQs)
{
Int256 pq = Int256.Parse(pqS);
Int256 expectedP = Int256.Parse(expectedPs);
Int256 expectedQ = Int256.Parse(expectedQs);
Int256 p, q;
pq.GetPrimeMultipliers(out p, out q);
p.Should().Be(expectedP);
q.Should().Be(expectedQ);
}
