| package org.bouncycastle.math.ec.custom.sec; |
| |
| import java.math.BigInteger; |
| |
| import org.bouncycastle.math.ec.ECCurve; |
| import org.bouncycastle.math.ec.ECFieldElement; |
| import org.bouncycastle.math.ec.ECPoint; |
| import org.bouncycastle.util.encoders.Hex; |
| |
| public class SecP160R2Curve extends ECCurve.AbstractFp |
| { |
| public static final BigInteger q = new BigInteger(1, |
| Hex.decode("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73")); |
| |
| private static final int SecP160R2_DEFAULT_COORDS = COORD_JACOBIAN; |
| |
| protected SecP160R2Point infinity; |
| |
| public SecP160R2Curve() |
| { |
| super(q); |
| |
| this.infinity = new SecP160R2Point(this, null, null); |
| |
| this.a = fromBigInteger(new BigInteger(1, |
| Hex.decode("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC70"))); |
| this.b = fromBigInteger(new BigInteger(1, |
| Hex.decode("B4E134D3FB59EB8BAB57274904664D5AF50388BA"))); |
| this.order = new BigInteger(1, Hex.decode("0100000000000000000000351EE786A818F3A1A16B")); |
| this.cofactor = BigInteger.valueOf(1); |
| |
| this.coord = SecP160R2_DEFAULT_COORDS; |
| } |
| |
| protected ECCurve cloneCurve() |
| { |
| return new SecP160R2Curve(); |
| } |
| |
| public boolean supportsCoordinateSystem(int coord) |
| { |
| switch (coord) |
| { |
| case COORD_JACOBIAN: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| public BigInteger getQ() |
| { |
| return q; |
| } |
| |
| public int getFieldSize() |
| { |
| return q.bitLength(); |
| } |
| |
| public ECFieldElement fromBigInteger(BigInteger x) |
| { |
| return new SecP160R2FieldElement(x); |
| } |
| |
| protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, boolean withCompression) |
| { |
| return new SecP160R2Point(this, x, y, withCompression); |
| } |
| |
| protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, boolean withCompression) |
| { |
| return new SecP160R2Point(this, x, y, zs, withCompression); |
| } |
| |
| public ECPoint getInfinity() |
| { |
| return infinity; |
| } |
| } |