public virtual ECPoint Lookup(int index)
{
ulong[] x = Nat256.Create64(), y = Nat256.Create64();
int pos = 0;
for (int i = 0; i < m_size; ++i)
{
ulong MASK = (ulong)(long)(((i ^ index) - 1) >> 31);
for (int j = 0; j < SECT233R1_FE_LONGS; ++j)
{
x[j] ^= m_table[pos + j] & MASK;
y[j] ^= m_table[pos + SECT233R1_FE_LONGS + j] & MASK;
}
pos += (SECT233R1_FE_LONGS * 2);
}
return(m_outer.CreateRawPoint(new SecT233FieldElement(x), new SecT233FieldElement(y), false));
}
private ECPoint CreatePoint(ulong[] x, ulong[] y)
{
return(m_outer.CreateRawPoint(new SecT233FieldElement(x), new SecT233FieldElement(y), SECT233R1_AFFINE_ZS, false));
}