public static ECPoint MapPoint(ECEndomorphism endomorphism, ECPoint p)
{
EndoPreCompInfo precomp = (EndoPreCompInfo)p.Curve.Precompute(p, PRECOMP_NAME,
new MapPointCallback(endomorphism, p));
return(precomp.MappedPoint);
}
public PreCompInfo Precompute(PreCompInfo existing)
{
EndoPreCompInfo existingEndo = existing as EndoPreCompInfo;
if (CheckExisting(existingEndo, m_endomorphism))
{
return(existingEndo);
}
ECPoint mappedPoint = m_endomorphism.PointMap.Map(m_point);
EndoPreCompInfo result = new EndoPreCompInfo();
result.Endomorphism = m_endomorphism;
result.MappedPoint = mappedPoint;
return(result);
}
private bool CheckExisting(EndoPreCompInfo existingEndo, ECEndomorphism endomorphism)
{
return(null != existingEndo &&
existingEndo.Endomorphism == endomorphism &&
existingEndo.MappedPoint != null);
}
