public void CheckAlphaNTest0()
{
// Sanity check
var keyPair = TestUtils.GeneratePrivate(Exp, setup.KeySize);
var pubKey = (RsaKeyParameters)keyPair.Public;
var Modulus = pubKey.Modulus;
// Assert CheckAlphaN returns True
Assert.IsTrue(PermutationTest.CheckAlphaN(alpha, Modulus));
}
public void _CheckAlphaN(BigInteger Exp, int keySize, int alpha, out double alphaTime)
{
var keyPair = TestUtils.GeneratePrivate(Exp, keySize);
var pubKey = (RsaKeyParameters)keyPair.Public;
var Modulus = pubKey.Modulus;
sw.Restart(); //Check AlphaN start
var output = PermutationTest.CheckAlphaN(alpha, Modulus);
sw.Stop(); //Check AlphaN ends
Assert.IsTrue(output);
alphaTime = sw.Elapsed.TotalMilliseconds;
}
public void CheckAlphaNTest3()
{
// CheckAlphaN outputs fail if N is even (2 * alpha).
BigInteger p, q;
// p is Two (Even)
p = BigInteger.Two;
// Generate q to fill N
q = BigInteger.ValueOf(alpha);
var Modulus = p.Multiply(q);
// Assert CheckAlphaN returns False
Assert.IsFalse(PermutationTest.CheckAlphaN(alpha, Modulus));
}
public void CheckAlphaNTest2()
{
// CheckAlphaN outputs fail if N is even.
// Sanity check
var keyPair = TestUtils.GeneratePrivate(Exp, setup.KeySize);
var privKey = (RsaPrivateCrtKeyParameters)keyPair.Private;
var pubKey = (RsaKeyParameters)keyPair.Public;
var Modulus = pubKey.Modulus;
var ModBytes = Modulus.ToByteArrayUnsigned();
// Make the LSB a zero to make it even.
ModBytes[ModBytes.Length - 1] &= (byte)0xfe;
Modulus = new BigInteger(1, ModBytes);
// Assert CheckAlphaN returns False
Assert.IsFalse(PermutationTest.CheckAlphaN(alpha, Modulus));
}
public void CheckAlphaNTest1()
{
// CheckAlphaN outputs fail if N has some prime number p < alpha as a factor.
BigInteger p, q;
// prime that comes immediately before alpha
var primeN = Utils.Primes(alpha - 1).Last();
p = BigInteger.ValueOf(primeN);
int pbitlength = p.BitLength;
int qbitlength = (setup.KeySize - pbitlength);
// Generate q
q = TestUtils.GenQ(p, qbitlength, setup.KeySize, Exp);
var Modulus = p.Multiply(q);
// Assert CheckAlphaN returns False
Assert.IsFalse(PermutationTest.CheckAlphaN(alpha, Modulus));
}
