public void SetUp()
{
DsaParametersGenerator paramGen = new DsaParametersGenerator();
_dsaParameters = paramGen.GenerateParameters(1024, 160, 160);
_dsaParameters.HashFunction = new Hasher(Hasher.HashImplementation.Sha1);
UserKeyGenerator keyGen = new UserKeyGenerator(_dsaParameters);
_keyPair = keyGen.GenerateKeyPair();
_dsaAlgorithm = new DsaAlgorithm(_dsaParameters);
}
public void When_GenerateParameters_Should_ReturnCorrectValues()
{
for (int i = 0; i < 3; i++)
{
DsaSystemParameters parameters = _generator.GenerateParameters(1024, 160, 160);
_primalityTester.CheckPrimality(parameters.Q).Should().BeTrue();
_primalityTester.CheckPrimality(parameters.P).Should().BeTrue();
//p - 1 is a multiple of q
((parameters.P - 1) % parameters.Q).Should().BeEquivalentTo(BigInteger.Zero);
//g^q is congruent to mod 1
BigInteger.ModPow(parameters.G, parameters.Q, parameters.P).Should().BeEquivalentTo(BigInteger.One);
}
}
