diff options
Diffstat (limited to 'bcprov/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP521R1Curve.java')
-rw-r--r-- | bcprov/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP521R1Curve.java | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP521R1Curve.java b/bcprov/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP521R1Curve.java new file mode 100644 index 0000000..16691b1 --- /dev/null +++ b/bcprov/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP521R1Curve.java @@ -0,0 +1,80 @@ +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 SecP521R1Curve extends ECCurve.AbstractFp +{ + public static final BigInteger q = new BigInteger(1, + Hex.decode("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF")); + + private static final int SecP521R1_DEFAULT_COORDS = COORD_JACOBIAN; + + protected SecP521R1Point infinity; + + public SecP521R1Curve() + { + super(q); + + this.infinity = new SecP521R1Point(this, null, null); + + this.a = fromBigInteger(new BigInteger(1, + Hex.decode("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC"))); + this.b = fromBigInteger(new BigInteger(1, + Hex.decode("0051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00"))); + this.order = new BigInteger(1, Hex.decode("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409")); + this.cofactor = BigInteger.valueOf(1); + + this.coord = SecP521R1_DEFAULT_COORDS; + } + + protected ECCurve cloneCurve() + { + return new SecP521R1Curve(); + } + + 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 SecP521R1FieldElement(x); + } + + protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, boolean withCompression) + { + return new SecP521R1Point(this, x, y, withCompression); + } + + protected ECPoint createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, boolean withCompression) + { + return new SecP521R1Point(this, x, y, zs, withCompression); + } + + public ECPoint getInfinity() + { + return infinity; + } +} |