public static void HalfTrace(ulong[] x, ulong[] z)
{
ulong[] tt = Nat256.CreateExt64();
Nat256.Copy64(x, z);
for (int i = 1; i < 239; i += 2)
{
ImplSquare(z, tt);
Reduce(tt, z);
ImplSquare(z, tt);
Reduce(tt, z);
AddTo(x, z);
}
}
public override ECLookupTable CreateCacheSafeLookupTable(ECPoint[] points, int off, int len)
{
ulong[] table = new ulong[len * SECT239K1_FE_LONGS * 2];
{
int pos = 0;
for (int i = 0; i < len; ++i)
{
ECPoint p = points[off + i];
Nat256.Copy64(((SecT239FieldElement)p.RawXCoord).x, 0, table, pos); pos += SECT239K1_FE_LONGS;
Nat256.Copy64(((SecT239FieldElement)p.RawYCoord).x, 0, table, pos); pos += SECT239K1_FE_LONGS;
}
}
return(new SecT239K1LookupTable(this, table, len));
}