private void ExchangeServer()
{
BigInteger g;
BigInteger n;
// Generate random prime numbers for g and n
using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(nBitsInKey))
{
RSAParameters parameters = rsa.ExportParameters(true);
byte[] d = parameters.D;
byte[] modulus = parameters.Modulus;
if (BitConverter.IsLittleEndian)
{
Array.Reverse(d);
Array.Reverse(modulus);
}
g = new BigInteger(d, true);
n = new BigInteger(modulus, true);
}
BigInteger a = RandomBigInt(nBitsInKey);
BigInteger ang = BigInteger.ModPow(g, a, n);
InitKeyShare initKey = new InitKeyShare(n, g, ang);
stream.Write(ObjectToByteArray(initKey));
byte[] message = GetMessage();
BigInteger gb = ByteArrayToObject <KeyShare>(message).abgn;
byte[] key = BigInteger.ModPow(gb, a, n).ToByteArray();
Array.Copy(key, _Key, _Key.Length);
}
private void ExchangeClient()
{
BigInteger b = RandomBigInt(nBitsInKey);
byte[] message = GetMessage();
InitKeyShare initData = ByteArrayToObject <InitKeyShare>(message);
BigInteger bgn = BigInteger.ModPow(initData.g, b, initData.n);
stream.Write(ObjectToByteArray(new KeyShare(bgn)));
byte[] key = BigInteger.ModPow(initData.abgn, b, initData.n).ToByteArray();
Array.Copy(key, _Key, _Key.Length);
}
