1d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Rootpackage org.bouncycastle.math.ec.custom.sec; 2d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 3d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Rootimport java.math.BigInteger; 4d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 5d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Rootimport org.bouncycastle.math.ec.ECCurve; 6d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Rootimport org.bouncycastle.math.ec.ECFieldElement; 7d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Rootimport org.bouncycastle.math.ec.ECPoint; 8d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Rootimport org.bouncycastle.util.encoders.Hex; 9d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 10d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Rootpublic class SecP192R1Curve extends ECCurve.AbstractFp 11d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root{ 12d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root public static final BigInteger q = new BigInteger(1, 13d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root Hex.decode("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF")); 14d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 15d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root private static final int SecP192R1_DEFAULT_COORDS = COORD_JACOBIAN; 16d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 17d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root protected SecP192R1Point infinity; 18d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 19d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root public SecP192R1Curve() 20d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 21d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root super(q); 22d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 23d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root this.infinity = new SecP192R1Point(this, null, null); 24d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 25d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root this.a = fromBigInteger(new BigInteger(1, 26d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root Hex.decode("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC"))); 27d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root this.b = fromBigInteger(new BigInteger(1, 28d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root Hex.decode("64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1"))); 29d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root this.order = new BigInteger(1, Hex.decode("FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831")); 30d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root this.cofactor = BigInteger.valueOf(1); 31d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 32d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root this.coord = SecP192R1_DEFAULT_COORDS; 33d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 34d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 35d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root protected ECCurve cloneCurve() 36d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 37d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return new SecP192R1Curve(); 38d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 39d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 40d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root public boolean supportsCoordinateSystem(int coord) 41d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 42d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root switch (coord) 43d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 44d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root case COORD_JACOBIAN: 45d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return true; 46d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root default: 47d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return false; 48d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 49d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 50d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 51d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root public BigInteger getQ() 52d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 53d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return q; 54d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 55d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 56d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root public int getFieldSize() 57d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 58d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return q.bitLength(); 59d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 60d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 61d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root public ECFieldElement fromBigInteger(BigInteger x) 62d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 63d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return new SecP192R1FieldElement(x); 64d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 65d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 66d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, boolean withCompression) 67d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 68d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return new SecP192R1Point(this, x, y, withCompression); 69d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 70d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 71d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, boolean withCompression) 72d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 73d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return new SecP192R1Point(this, x, y, zs, withCompression); 74d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 75d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root 76d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root public ECPoint getInfinity() 77d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root { 78d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root return infinity; 79d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root } 80d001700a15b8bd733ae344c1fc315b97c43c6590Kenny Root} 81