public void SetUp()
{
mParenthesesCounter = new ParenthesesCounter();
mAdditiveCounter = new AdditiveCounter();
mTreeDepthCounter = new TreeDepthCounter();
mExpressionCounter = new ExpressionCounter();
mTreeDepthSetter = new TreeDepthSetter();
mUnderTest = new AggregateEvaluator(mParenthesesCounter, mAdditiveCounter, mTreeDepthCounter,
mExpressionCounter, mTreeDepthSetter);
}
public void ShouldAlwaysOfferExactly128Bits(string hex)
{
var firstValue = new BitString(hex);
var subject = new AdditiveCounter(_aesEngine, firstValue);
for (var i = 0; i < 1000; i++)
{
Assert.AreEqual(128, subject.GetNextIV().BitLength);
}
}
public void ShouldWrapTheCounterWhenAtMaxValue()
{
var initialValue = BitString.Ones(128);
var subject = new AdditiveCounter(_aesEngine, initialValue);
var firstResult = subject.GetNextIV();
var secondResult = subject.GetNextIV();
var thirdResult = subject.GetNextIV();
Assert.AreEqual(initialValue, firstResult);
Assert.AreEqual(BitString.Zeroes(128), secondResult);
Assert.AreEqual(BitString.ConcatenateBits(BitString.Zeroes(127), BitString.One()), thirdResult);
}
public void ShouldIncreaseByOneEachCall()
{
var subject = new AdditiveCounter(_aesEngine, BitString.Zero());
var prevResult = subject.GetNextIV().ToPositiveBigInteger();
for (var i = 0; i < 1000; i++)
{
var curResult = subject.GetNextIV().ToPositiveBigInteger();
Assert.AreEqual(prevResult + 1, curResult);
prevResult = curResult;
}
}
public void SetUp()
{
mUnderTest = new AdditiveCounter();
}
