| 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 SecT131R1Curve extends AbstractF2m |
| { |
| private static final int SecT131R1_DEFAULT_COORDS = COORD_LAMBDA_PROJECTIVE; |
| |
| protected SecT131R1Point infinity; |
| |
| public SecT131R1Curve() |
| { |
| super(131, 2, 3, 8); |
| |
| this.infinity = new SecT131R1Point(this, null, null); |
| |
| this.a = fromBigInteger(new BigInteger(1, Hex.decode("07A11B09A76B562144418FF3FF8C2570B8"))); |
| this.b = fromBigInteger(new BigInteger(1, Hex.decode("0217C05610884B63B9C6C7291678F9D341"))); |
| this.order = new BigInteger(1, Hex.decode("0400000000000000023123953A9464B54D")); |
| this.cofactor = BigInteger.valueOf(2); |
| |
| this.coord = SecT131R1_DEFAULT_COORDS; |
| } |
| |
| protected ECCurve cloneCurve() |
| { |
| return new SecT131R1Curve(); |
| } |
| |
| public boolean supportsCoordinateSystem(int coord) |
| { |
| switch (coord) |
| { |
| case COORD_LAMBDA_PROJECTIVE: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| public int getFieldSize() |
| { |
| return 131; |
| } |
| |
| public ECFieldElement fromBigInteger(BigInteger x) |
| { |
| return new SecT131FieldElement(x); |
| } |
| |
| protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, boolean withCompression) |
| { |
| return new SecT131R1Point(this, x, y, withCompression); |
| } |
| |
| protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, boolean withCompression) |
| { |
| return new SecT131R1Point(this, x, y, zs, withCompression); |
| } |
| |
| public ECPoint getInfinity() |
| { |
| return infinity; |
| } |
| |
| public boolean isKoblitz() |
| { |
| return false; |
| } |
| |
| public int getM() |
| { |
| return 131; |
| } |
| |
| public boolean isTrinomial() |
| { |
| return false; |
| } |
| |
| public int getK1() |
| { |
| return 2; |
| } |
| |
| public int getK2() |
| { |
| return 3; |
| } |
| |
| public int getK3() |
| { |
| return 8; |
| } |
| } |