public void RotateRight_RotatesTwoBits_Rotated()
{
uint value = 6;
uint expected = 2147483649;
Assert.AreEqual(expected, Word32Bits.RotateRight(value, 2));
}
public void RotateRight_RotatesOneBit_Rotated()
{
uint value = 3;
uint expected = 2147483649;
Assert.AreEqual(expected, Word32Bits.RotateRight(value));
}
private uint[] Round(ITwofishMDS mds, uint[] K, int round)
{
uint F0 = TwofishFunction.h(mds, K[0], _key.SBox);
uint F1 = TwofishFunction.h(mds, Word32Bits.RotateLeft(K[1], 8), _key.SBox);
K[2] ^= F0 + F1 + _key.K[2 * round + 8];
K[2] = Word32Bits.RotateRight(K[2], 1);
K[3] = Word32Bits.RotateLeft(K[3], 1) ^ (F0 + 2 * F1 + _key.K[2 * round + 9]);
return(K);
}
public static uint[] Inverse(uint[] x)
{
uint x1 = Word32Bits.RotateRight(x[2], 22) ^ x[3] ^ x[1] << 7;
uint x2 = Word32Bits.RotateRight(x[0], 5) ^ x[1] ^ x[3];
uint num1 = Word32Bits.RotateRight(x[3], 7);
uint num2 = Word32Bits.RotateRight(x[1], 1);
x[3] = num1 ^ x1 ^ x2 << 3;
x[1] = num2 ^ x2 ^ x1;
x[2] = Word32Bits.RotateRight(x1, 3);
x[0] = Word32Bits.RotateRight(x2, 13);
return(x);
}