| 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 SecT193R2Curve extends AbstractF2m |
| { |
| private static final int SecT193R2_DEFAULT_COORDS = COORD_LAMBDA_PROJECTIVE; |
| |
| protected SecT193R2Point infinity; |
| |
| public SecT193R2Curve() |
| { |
| super(193, 15, 0, 0); |
| |
| this.infinity = new SecT193R2Point(this, null, null); |
| |
| this.a = fromBigInteger(new BigInteger(1, Hex.decode("0163F35A5137C2CE3EA6ED8667190B0BC43ECD69977702709B"))); |
| this.b = fromBigInteger(new BigInteger(1, Hex.decode("00C9BB9E8927D4D64C377E2AB2856A5B16E3EFB7F61D4316AE"))); |
| this.order = new BigInteger(1, Hex.decode("010000000000000000000000015AAB561B005413CCD4EE99D5")); |
| this.cofactor = BigInteger.valueOf(2); |
| |
| this.coord = SecT193R2_DEFAULT_COORDS; |
| } |
| |
| protected ECCurve cloneCurve() |
| { |
| return new SecT193R2Curve(); |
| } |
| |
| public boolean supportsCoordinateSystem(int coord) |
| { |
| switch (coord) |
| { |
| case COORD_LAMBDA_PROJECTIVE: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| public int getFieldSize() |
| { |
| return 193; |
| } |
| |
| public ECFieldElement fromBigInteger(BigInteger x) |
| { |
| return new SecT193FieldElement(x); |
| } |
| |
| protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, boolean withCompression) |
| { |
| return new SecT193R2Point(this, x, y, withCompression); |
| } |
| |
| protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, boolean withCompression) |
| { |
| return new SecT193R2Point(this, x, y, zs, withCompression); |
| } |
| |
| public ECPoint getInfinity() |
| { |
| return infinity; |
| } |
| |
| public boolean isKoblitz() |
| { |
| return false; |
| } |
| |
| public int getM() |
| { |
| return 193; |
| } |
| |
| public boolean isTrinomial() |
| { |
| return true; |
| } |
| |
| public int getK1() |
| { |
| return 15; |
| } |
| |
| public int getK2() |
| { |
| return 0; |
| } |
| |
| public int getK3() |
| { |
| return 0; |
| } |
| } |