internal static byte[] ComputeKey(BigInteger secretA,
BigInteger sharedA,
BigInteger sharedB,
ClientInfo clientInfo,
Session session)
{
// Some arbitrary crypto computation, variable names don't have much meaning
var ab = sharedA.ToHex() + sharedB.ToHex();
var hashAb = Crypto.Sha256(ab).ToBigInt();
var s = session.Id.ToBytes().ToBigInt();
var x = ComputeX(clientInfo, session);
var y = sharedB - SirpG.ModExp(x, SirpN) * s;
var z = y.ModExp(secretA + hashAb * x, SirpN);
return(Crypto.Sha256(z.ToHex()));
}
internal static BigInteger ComputeSharedA(BigInteger secretA)
{
return(SirpG.ModExp(secretA, SirpN));
}
