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using System;
using Org.BouncyCastle.Utilities.Encoders;
namespace Org.BouncyCastle.Math.EC.Custom.Sec
{
internal class SecP160R2Curve
: AbstractFpCurve
{
public static readonly BigInteger q = new BigInteger(1,
Hex.Decode("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73"));
private const int SecP160R2_DEFAULT_COORDS = COORD_JACOBIAN;
protected readonly SecP160R2Point m_infinity;
public SecP160R2Curve()
: base(q)
{
this.m_infinity = new SecP160R2Point(this, null, null);
this.m_a = FromBigInteger(new BigInteger(1,
Hex.Decode("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC70")));
this.m_b = FromBigInteger(new BigInteger(1,
Hex.Decode("B4E134D3FB59EB8BAB57274904664D5AF50388BA")));
this.m_order = new BigInteger(1, Hex.Decode("0100000000000000000000351EE786A818F3A1A16B"));
this.m_cofactor = BigInteger.One;
this.m_coord = SecP160R2_DEFAULT_COORDS;
}
protected override ECCurve CloneCurve()
{
return new SecP160R2Curve();
}
public override bool SupportsCoordinateSystem(int coord)
{
switch (coord)
{
case COORD_JACOBIAN:
return true;
default:
return false;
}
}
public virtual BigInteger Q
{
get { return q; }
}
public override ECPoint Infinity
{
get { return m_infinity; }
}
public override int FieldSize
{
get { return q.BitLength; }
}
public override ECFieldElement FromBigInteger(BigInteger x)
{
return new SecP160R2FieldElement(x);
}
protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, bool withCompression)
{
return new SecP160R2Point(this, x, y, withCompression);
}
protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, bool withCompression)
{
return new SecP160R2Point(this, x, y, zs, withCompression);
}
}
}
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