private void PadAndSwitchToSqueezingPhase()
{
_dataQueue[_bitsInQueue >> 3] |= (byte)(1 << (_bitsInQueue & 7));
if (++_bitsInQueue == _rate)
{
KeccakAbsorb(_dataQueue, 0);
}
else
{
int full = _bitsInQueue >> 6, partial = _bitsInQueue & 63;
int off = 0;
for (int i = 0; i < full; ++i)
{
_state[i] ^= NativeFastShaUtils.LE_To_UInt64(_dataQueue, off);
off += 8;
}
if (partial > 0)
{
ulong mask = (1UL << partial) - 1UL;
_state[full] ^= NativeFastShaUtils.LE_To_UInt64(_dataQueue, off) & mask;
}
}
_state[(_rate - 1) >> 6] ^= (1UL << 63);
_bitsInQueue = 0;
_squeezing = true;
}
private void KeccakExtract()
{
KeccakPermutation();
NativeFastShaUtils.UInt64_To_LE(_state, 0, _rate >> 6, _dataQueue, 0);
_bitsInQueue = _rate;
}
private void ProcessWord(byte[] input, int inOff)
{
W[wOff] = NativeFastShaUtils.BE_To_UInt64(input, inOff);
if (++wOff == 16)
{
ProcessBlock();
}
}
protected override void ProcessWord(byte[] input, int inOff)
{
X[xOff] = NativeFastShaUtils.BE_To_UInt32(input, inOff);
if (++xOff == 16)
{
ProcessBlock();
}
}
public void Final(byte[] output, int outputBitLength = 0)
{
Finish();
NativeFastShaUtils.UInt64_To_BE(H1, output, 0);
NativeFastShaUtils.UInt64_To_BE(H2, output, 8);
NativeFastShaUtils.UInt64_To_BE(H3, output, 16);
NativeFastShaUtils.UInt64_To_BE(H4, output, 24);
}
private void KeccakAbsorb(byte[] data, int off)
{
int count = _rate >> 6;
for (int i = 0; i < count; ++i)
{
_state[i] ^= NativeFastShaUtils.LE_To_UInt64(data, off);
off += 8;
}
KeccakPermutation();
}
public void Final(byte[] output, int outputBitLength = 0)
{
Finish();
NativeFastShaUtils.UInt64_To_BE(H1, output, 0);
NativeFastShaUtils.UInt64_To_BE(H2, output, 8);
NativeFastShaUtils.UInt64_To_BE(H3, output, 16);
NativeFastShaUtils.UInt64_To_BE(H4, output, 24);
// Extra stuff is given, so we clear out the unneeded parts
Array.Clear(output, 28, output.Length - 28);
}
public void Final(byte[] output, int outputBitLength = 0)
{
Finish();
NativeFastShaUtils.UInt32_To_BE(H1, output, 0);
NativeFastShaUtils.UInt32_To_BE(H2, output, 4);
NativeFastShaUtils.UInt32_To_BE(H3, output, 8);
NativeFastShaUtils.UInt32_To_BE(H4, output, 12);
NativeFastShaUtils.UInt32_To_BE(H5, output, 16);
NativeFastShaUtils.UInt32_To_BE(H6, output, 20);
NativeFastShaUtils.UInt32_To_BE(H7, output, 24);
NativeFastShaUtils.UInt32_To_BE(H8, output, 28);
}