/// <remarks>
/// Apply the inverse of the linear transformation to the register set
/// </remarks>
private void InverseTransform(ref uint R0, ref uint R1, ref uint R2, ref uint R3)
{
uint x2 = IntUtils.RotateRight(R2, 22) ^ R3 ^ (R1 << 7);
uint x0 = IntUtils.RotateRight(R0, 5) ^ R1 ^ R3;
uint x3 = IntUtils.RotateRight(R3, 7);
uint x1 = IntUtils.RotateRight(R1, 1);
R3 = x3 ^ x2 ^ x0 << 3;
R1 = x1 ^ x0 ^ x2;
R2 = IntUtils.RotateRight(x2, 3);
R0 = IntUtils.RotateRight(x0, 13);
}
/// <remarks>
/// Apply the inverse of the linear transformation to the register set
/// </remarks>
private void InverseTransform(ref UInt32 R0, ref UInt32 R1, ref UInt32 R2, ref UInt32 R3)
{
UInt32 x2 = IntUtils.RotateRight(R2, 22) ^ R3 ^ (R1 << 7);
UInt32 x0 = IntUtils.RotateRight(R0, 5) ^ R1 ^ R3;
UInt32 x3 = IntUtils.RotateRight(R3, 7);
UInt32 x1 = IntUtils.RotateRight(R1, 1);
R3 = x3 ^ x2 ^ x0 << 3;
R1 = x1 ^ x0 ^ x2;
R2 = IntUtils.RotateRight(x2, 3);
R0 = IntUtils.RotateRight(x0, 13);
}
void Mix(uint A, uint B, uint C, uint D, uint R, uint I)
{
uint P = (R << 4) + I;
uint P0 = _ftSigma[P];
uint P1 = _ftSigma[P + 1];
_V[A] += _V[B] + (_M[P0] ^ _C32[P1]);
_V[D] = IntUtils.RotateRight(_V[D] ^ _V[A], 16);
_V[C] += _V[D];
_V[B] = IntUtils.RotateRight(_V[B] ^ _V[C], 12);
_V[A] += _V[B] + (_M[P1] ^ _C32[P0]);
_V[D] = IntUtils.RotateRight(_V[D] ^ _V[A], 8);
_V[C] += _V[D];
_V[B] = IntUtils.RotateRight(_V[B] ^ _V[C], 7);
}
private void Mix(uint A, uint B, uint C, uint D, uint R, uint I)
{
uint P = (R << 4) + I;
uint P0 = _ftSigma[P];
uint P1 = _ftSigma[P + 1];
// initialization
_V[A] += _V[B] + (_M[P0] ^ _C64[P1]);
_V[D] = IntUtils.RotateRight(_V[D] ^ _V[A], 32);
_V[C] += _V[D];
_V[B] = IntUtils.RotateRight(_V[B] ^ _V[C], 25);
_V[A] += _V[B] + (_M[P1] ^ _C64[P0]);
_V[D] = IntUtils.RotateRight(_V[D] ^ _V[A], 16);
_V[C] += _V[D];
_V[B] = IntUtils.RotateRight(_V[B] ^ _V[C], 11);
}
