public void ShouldReturnPrimeWithGenerator(int keySize)
{
var parameters = mapper.GetParametersByKeySize(keySize);
//Single iteration is enough; the content is prime unless altered by formatting.
Assert.IsTrue(Primes.IsMRProbablePrime(parameters.Prime, random, 1));
Assert.AreEqual(keySize, parameters.Prime.BitLength);
Assert.AreEqual(2, parameters.Generator.IntValue);
}
public IAsymmetricKeyPair CreateKeyPair(int keySize, bool useRfc3526Prime)
{
AsymmetricCipherKeyPair keyPair;
if (useRfc3526Prime)
{
AsymmetricKeyParameters parameters = primes.GetParametersByKeySize(keySize);
keyPair = keyPairGenerator.GenerateElGamalKeyPair(keySize, parameters.Prime, parameters.Generator);
}
else
{
keyPair = keyPairGenerator.GenerateElGamalKeyPair(keySize);
}
byte[] publicKeyContent = GetPublicKey(keyPair.Public);
byte[] privateKeyContent = GetPrivateKey(keyPair.Private);
var publicKey = new ElGamalKey(publicKeyContent, AsymmetricKeyType.Public, GetKeyLength(keyPair.Public));
var privateKey = new ElGamalKey(privateKeyContent, AsymmetricKeyType.Private, GetKeyLength(keyPair.Private));
return(new AsymmetricKeyPair(privateKey, publicKey));
}