public void Dispose()
{
DhPrime.Dispose();
DhGenerator.Dispose();
DhPublic.Dispose();
DhPrivate.Dispose();
}
public HKeyExchange(int e, string n, string d, int bitSize = 16)
{
_bitSize = bitSize;
IsInitiator = !string.IsNullOrWhiteSpace(d);
Rsa = IsInitiator
? RsaKey.ParsePrivateKey(e, n, d)
: RsaKey.ParsePublicKey(e, n);
if (IsInitiator)
{
do
{
DhPrime = BigInteger.GenPseudoPrime(212, 6, _byteGen);
}while (!DhPrime.IsProbablePrime());
do
{
DhGenerator = BigInteger.GenPseudoPrime(212, 6, _byteGen);
}while (DhGenerator >= DhPrime && !DhPrime.IsProbablePrime());
if (DhGenerator > DhPrime)
{
BigInteger dhGenShell = DhGenerator;
DhGenerator = DhPrime;
DhPrime = dhGenShell;
}
DhPrivate = new BigInteger(RandomHex(30), bitSize);
DhPublic = DhGenerator.ModPow(DhPrivate, DhPrime);
}
}
public string GetSignedPrime()
{
if (!IsInitiator || !string.IsNullOrEmpty(_signedPrime))
{
return(_signedPrime);
}
byte[] primeAsBytes = Encoding.Default.GetBytes(DhPrime.ToString(10));
Rsa.Sign(ref primeAsBytes);
return(_signedPrime = BytesToHex(primeAsBytes).ToLower());
}
protected virtual void Dispose(bool disposing)
{
if (!IsDisposed)
{
if (disposing)
{
Rsa?.Dispose();
DhPrime?.Dispose();
DhGenerator?.Dispose();
DhPublic?.Dispose();
DhPrivate?.Dispose();
}
IsDisposed = true;
}
}