/**
* Multiplies a {@link BitcoinNet.BouncyCastle.math.ec.AbstractF2mPoint AbstractF2mPoint}
* by a <code>BigInteger</code> using the reduced <code>τ</code>-adic
* NAF (RTNAF) method.
* @param p The AbstractF2mPoint to Multiply.
* @param k The <code>BigInteger</code> by which to Multiply <code>p</code>.
* @return <code>k * p</code>
*/
public static AbstractF2mPoint MultiplyRTnaf(AbstractF2mPoint p, BigInteger k)
{
AbstractF2mCurve curve = (AbstractF2mCurve)p.Curve;
int m = curve.FieldSize;
int a = curve.A.ToBigInteger().IntValue;
sbyte mu = GetMu(a);
BigInteger[] s = curve.GetSi();
ZTauElement rho = PartModReduction(k, m, (sbyte)a, s, mu, (sbyte)10);
return(MultiplyTnaf(p, rho));
}
public static AbstractF2mPoint MultiplyRTnaf(AbstractF2mPoint p, BigInteger k)
{
AbstractF2mCurve abstractF2mCurve = (AbstractF2mCurve)p.Curve;
int fieldSize = abstractF2mCurve.FieldSize;
int intValue = abstractF2mCurve.A.ToBigInteger().IntValue;
sbyte mu = GetMu(intValue);
BigInteger[] si = abstractF2mCurve.GetSi();
ZTauElement lambda = PartModReduction(k, fieldSize, (sbyte)intValue, si, mu, 10);
return(MultiplyTnaf(p, lambda));
}
protected override ECPoint MultiplyPositive(ECPoint point, BigInteger k)
{
if (!(point is AbstractF2mPoint))
{
throw new ArgumentException("Only AbstractF2mPoint can be used in WTauNafMultiplier");
}
AbstractF2mPoint p = (AbstractF2mPoint)point;
AbstractF2mCurve curve = (AbstractF2mCurve)p.Curve;
int fieldSize = curve.FieldSize;
sbyte intValue = (sbyte)curve.A.ToBigInteger().IntValue;
sbyte mu = Tnaf.GetMu((int)intValue);
BigInteger[] si = curve.GetSi();
ZTauElement lambda = Tnaf.PartModReduction(k, fieldSize, intValue, si, mu, 10);
return(this.MultiplyWTnaf(p, lambda, curve.GetPreCompInfo(p, PRECOMP_NAME), intValue, mu));
}
protected override ECPoint MultiplyPositive(ECPoint point, BigInteger k)
{
//IL_000d: Unknown result type (might be due to invalid IL or missing references)
if (!(point is AbstractF2mPoint))
{
throw new ArgumentException("Only AbstractF2mPoint can be used in WTauNafMultiplier");
}
AbstractF2mPoint abstractF2mPoint = (AbstractF2mPoint)point;
AbstractF2mCurve abstractF2mCurve = (AbstractF2mCurve)abstractF2mPoint.Curve;
int fieldSize = abstractF2mCurve.FieldSize;
sbyte b = (sbyte)abstractF2mCurve.A.ToBigInteger().IntValue;
sbyte mu = Tnaf.GetMu(b);
BigInteger[] si = abstractF2mCurve.GetSi();
ZTauElement lambda = Tnaf.PartModReduction(k, fieldSize, b, si, mu, 10);
return(MultiplyWTnaf(abstractF2mPoint, lambda, abstractF2mCurve.GetPreCompInfo(abstractF2mPoint, PRECOMP_NAME), b, mu));
}
/**
* Multiplies a {@link NBitcoin.BouncyCastle.math.ec.AbstractF2mPoint AbstractF2mPoint}
* by <code>k</code> using the reduced <code>τ</code>-adic NAF (RTNAF)
* method.
* @param p The AbstractF2mPoint to multiply.
* @param k The integer by which to multiply <code>k</code>.
* @return <code>p</code> multiplied by <code>k</code>.
*/
protected override ECPoint MultiplyPositive(ECPoint point, BigInteger k)
{
if (!(point is AbstractF2mPoint))
{
throw new ArgumentException("Only AbstractF2mPoint can be used in WTauNafMultiplier");
}
AbstractF2mPoint p = (AbstractF2mPoint)point;
AbstractF2mCurve curve = (AbstractF2mCurve)p.Curve;
int m = curve.FieldSize;
sbyte a = (sbyte)curve.A.ToBigInteger().IntValue;
sbyte mu = Tnaf.GetMu(a);
BigInteger[] s = curve.GetSi();
ZTauElement rho = Tnaf.PartModReduction(k, m, a, s, mu, (sbyte)10);
return(MultiplyWTnaf(p, rho, curve.GetPreCompInfo(p, PRECOMP_NAME), a, mu));
}