/// <summary>
/// Calculate one step in the quarterround function.
/// </summary>
protected virtual (uint, uint, uint) QuarterroundStep(uint x1, uint x2, uint x3, int shift)
{
x1 += x2;
uint add = x1;
x3 ^= x1;
uint xor = x3;
x3 = ByteUtil.RotateLeft(x3, shift);
uint shift_ = x3;
QRStep.Add(new QRStep(add, xor, shift_));
return(x1, x2, x3);
}
private void ClearIntermediateResults()
{
// matrices
OriginalState.Clear();
OriginalStateDiffusion.Clear();
AdditionResultState.Clear();
AdditionResultStateDiffusion.Clear();
LittleEndianState.Clear();
LittleEndianStateDiffusion.Clear();
// qr
QRInput.Clear();
QRInputDiffusion.Clear();
QRStep.Clear();
QRStepDiffusion.Clear();
QROutput.Clear();
QROutputDiffusion.Clear();
InputMessage.Clear();
Keystream.Clear();
KeystreamDiffusion.Clear();
Output.Clear();
OutputDiffusion.Clear();
}