public virtual ECPoint Lookup(int index)
{
uint[] x = Nat256.Create(), y = Nat256.Create();
int pos = 0;
for (int i = 0; i < m_size; ++i)
{
uint MASK = (uint)(((i ^ index) - 1) >> 31);
for (int j = 0; j < SM2P256V1_FE_INTS; ++j)
{
x[j] ^= m_table[pos + j] & MASK;
y[j] ^= m_table[pos + SM2P256V1_FE_INTS + j] & MASK;
}
pos += (SM2P256V1_FE_INTS * 2);
}
return(m_outer.CreateRawPoint(new SM2P256V1FieldElement(x), new SM2P256V1FieldElement(y), false));
}
private ECPoint CreatePoint(uint[] x, uint[] y)
{
return(m_outer.CreateRawPoint(new SM2P256V1FieldElement(x), new SM2P256V1FieldElement(y), SM2P256V1_AFFINE_ZS, false));
}