diff options
Diffstat (limited to 'core/src/main/java/org/spongycastle/math/ec/custom/sec/SecP224K1Curve.java')
-rw-r--r-- | core/src/main/java/org/spongycastle/math/ec/custom/sec/SecP224K1Curve.java | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/math/ec/custom/sec/SecP224K1Curve.java b/core/src/main/java/org/spongycastle/math/ec/custom/sec/SecP224K1Curve.java new file mode 100644 index 00000000..9b26b6f8 --- /dev/null +++ b/core/src/main/java/org/spongycastle/math/ec/custom/sec/SecP224K1Curve.java @@ -0,0 +1,78 @@ +package org.spongycastle.math.ec.custom.sec; + +import java.math.BigInteger; + +import org.spongycastle.math.ec.ECConstants; +import org.spongycastle.math.ec.ECCurve; +import org.spongycastle.math.ec.ECFieldElement; +import org.spongycastle.math.ec.ECPoint; +import org.spongycastle.util.encoders.Hex; + +public class SecP224K1Curve extends ECCurve.AbstractFp +{ + public static final BigInteger q = new BigInteger(1, + Hex.decode("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFE56D")); + + private static final int SECP224K1_DEFAULT_COORDS = COORD_JACOBIAN; + + protected SecP224K1Point infinity; + + public SecP224K1Curve() + { + super(q); + + this.infinity = new SecP224K1Point(this, null, null); + + this.a = fromBigInteger(ECConstants.ZERO); + this.b = fromBigInteger(BigInteger.valueOf(5)); + this.order = new BigInteger(1, Hex.decode("010000000000000000000000000001DCE8D2EC6184CAF0A971769FB1F7")); + this.cofactor = BigInteger.valueOf(1); + this.coord = SECP224K1_DEFAULT_COORDS; + } + + protected ECCurve cloneCurve() + { + return new SecP224K1Curve(); + } + + 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 SecP224K1FieldElement(x); + } + + protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, boolean withCompression) + { + return new SecP224K1Point(this, x, y, withCompression); + } + + protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, boolean withCompression) + { + return new SecP224K1Point(this, x, y, zs, withCompression); + } + + public ECPoint getInfinity() + { + return infinity; + } +} |