internal override IArgon2PseudoRands GenerateState(Argon2Lane[] lanes, int segmentLength, int pass, int lane, int slice)
{
var rands = new ulong[segmentLength];
var ulongRaw = new ulong[384];
var inputBlock = new Argon2Memory(ulongRaw, 0);
var addressBlock = new Argon2Memory(ulongRaw, 128);
var tmpBlock = new Argon2Memory(ulongRaw, 256);
inputBlock[0] = (ulong)pass;
inputBlock[1] = (ulong)lane;
inputBlock[2] = (ulong)slice;
inputBlock[3] = (ulong)MemorySize;
inputBlock[4] = (ulong)Iterations;
inputBlock[5] = (ulong)Type;
for (var i = 0; i < segmentLength; i++)
{
var ival = i % 128;
if (ival == 0)
{
inputBlock[6]++;
tmpBlock.Set(0);
addressBlock.Set(0);
Compress(tmpBlock, inputBlock, _zeroBlock);
Compress(addressBlock, tmpBlock, _zeroBlock);
}
rands[i] = addressBlock[ival];
}
return(new PseudoRands(rands));
}
public void Expose(Argon2Memory memory)
{
if (memory != null)
{
Expose(new Argon2Memory.Stream(memory));
}
}
internal unsafe static void Compress(Argon2Memory dest, Argon2Memory refb, Argon2Memory prev)
{
var tmpblock = stackalloc ulong[dest.Length];
for (var n = 0; n < 128; ++n)
{
tmpblock[n] = refb[n] ^ prev[n];
dest[n] ^= tmpblock[n];
}
for (var i = 0; i < 8; ++i)
{
ModifiedBlake2.DoRoundColumns(tmpblock, i);
}
for (var i = 0; i < 8; ++i)
{
ModifiedBlake2.DoRoundRows(tmpblock, i);
}
for (var n = 0; n < 128; ++n)
{
dest[n] ^= tmpblock[n];
}
}
private static void DebugWrite(Argon2Memory mem)
{
DebugWrite(mem.ToArray());
}
public Stream(Argon2Memory memory)
{
_data = GCHandle.Alloc(memory._data, GCHandleType.Pinned);
base.Initialize((byte *)_data.AddrOfPinnedObject() + (memory._offset * 8), 1024, 1024, FileAccess.Read);
}