public void ShouldReturnNullWhenCurrentIsNull()
{
var subject = new Random800_90();
var result = subject.GetDifferentBitStringOfSameSize(null);
Assert.IsNull(result);
}
public void ShouldReturnNullWhenCurrentIsZeroLength()
{
var subject = new Random800_90();
var zeroLengthBitString = new BitString(0);
var result = subject.GetDifferentBitStringOfSameSize(zeroLengthBitString);
Assert.IsNull(result);
}
public void ShouldGenerateAndVerifySuccessfully(string keyString, string messageString, string expectedMacString)
{
BitString key = new BitString(keyString);
BitString message = new BitString(messageString);
BitString expectedMac = new BitString(expectedMacString);
int macLength = expectedMac.BitLength;
Random800_90 rand = new Random800_90();
var badMac = rand.GetDifferentBitStringOfSameSize(expectedMac);
var generateResult = _subject.Generate(key, message, macLength);
var goodValidateResult = _subject.Verify(key, message, generateResult.Mac);
var badValidateResult = _subject.Verify(key, message, badMac);
Assert.IsTrue(generateResult.Success, "Successful generate");
Assert.AreEqual(expectedMac.ToHex(), generateResult.Mac.ToHex(), "Generate MAC");
Assert.IsTrue(goodValidateResult.Success, "Verify success");
Assert.IsFalse(badValidateResult.Success, "Verify failure");
}