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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.4.
package org.bouncycastle.math.ec.custom.sec;
import java.math.BigInteger;
import org.bouncycastle.math.ec.ECCurve;
import org.bouncycastle.math.ec.ECCurve.AbstractF2m;
import org.bouncycastle.math.ec.ECFieldElement;
import org.bouncycastle.math.ec.ECPoint;
import org.bouncycastle.util.encoders.Hex;
public class SecT571R1Curve extends AbstractF2m
{
private static final int SecT571R1_DEFAULT_COORDS = COORD_LAMBDA_PROJECTIVE;
protected SecT571R1Point infinity;
static final SecT571FieldElement SecT571R1_B = new SecT571FieldElement(
new BigInteger(1, Hex.decode("02F40E7E2221F295DE297117B7F3D62F5C6A97FFCB8CEFF1CD6BA8CE4A9A18AD84FFABBD8EFA59332BE7AD6756A66E294AFD185A78FF12AA520E4DE739BACA0C7FFEFF7F2955727A")));
static final SecT571FieldElement SecT571R1_B_SQRT = (SecT571FieldElement)SecT571R1_B.sqrt();
public SecT571R1Curve()
{
super(571, 2, 5, 10);
this.infinity = new SecT571R1Point(this, null, null);
this.a = fromBigInteger(BigInteger.valueOf(1));
this.b = SecT571R1_B;
this.order = new BigInteger(1, Hex.decode("03FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE661CE18FF55987308059B186823851EC7DD9CA1161DE93D5174D66E8382E9BB2FE84E47"));
this.cofactor = BigInteger.valueOf(2);
this.coord = SecT571R1_DEFAULT_COORDS;
}
protected ECCurve cloneCurve()
{
return new SecT571R1Curve();
}
public boolean supportsCoordinateSystem(int coord)
{
switch (coord)
{
case COORD_LAMBDA_PROJECTIVE:
return true;
default:
return false;
}
}
public int getFieldSize()
{
return 571;
}
public ECFieldElement fromBigInteger(BigInteger x)
{
return new SecT571FieldElement(x);
}
protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, boolean withCompression)
{
return new SecT571R1Point(this, x, y, withCompression);
}
protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, boolean withCompression)
{
return new SecT571R1Point(this, x, y, zs, withCompression);
}
public ECPoint getInfinity()
{
return infinity;
}
public boolean isKoblitz()
{
return false;
}
public int getM()
{
return 571;
}
public boolean isTrinomial()
{
return false;
}
public int getK1()
{
return 2;
}
public int getK2()
{
return 5;
}
public int getK3()
{
return 10;
}
}
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