com.ibm.crypto.fips.provider

Class JacobianCurve

java.lang.Object

java.security.spec.EllipticCurve

com.ibm.crypto.fips.provider.PrimeCurve

com.ibm.crypto.fips.provider.JacobianCurve

public class JacobianCurve
extends PrimeCurve

This class efficiently implements EC operations on elliptic curve that can be expressed as: y^2 = x^3 + ax + b with cofactor of 1

Constructor Summary

Constructors

Constructor and Description
JacobianCurve(java.security.spec.ECField field, java.math.BigInteger a, java.math.BigInteger b)
JacobianCurve(java.security.spec.ECField field, java.math.BigInteger a, java.math.BigInteger b, byte[] seed)

Method Summary

Methods

Modifier and Type	Method and Description
EllipticPoint	add(EllipticPoint p1, EllipticPoint p2)
EllipticPoint	doublee(EllipticPoint p1)
EllipticPoint	multiply(java.lang.Object k, EllipticPoint generator)
EllipticPoint	toEllipticPoint(java.security.spec.ECPoint p)

Methods inherited from class java.security.spec.EllipticCurve

equals, getA, getB, getField, getSeed, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JacobianCurve

public JacobianCurve(java.security.spec.ECField field,
             java.math.BigInteger a,
             java.math.BigInteger b)

JacobianCurve

public JacobianCurve(java.security.spec.ECField field,
             java.math.BigInteger a,
             java.math.BigInteger b,
             byte[] seed)

Method Detail

multiply

public EllipticPoint multiply(java.lang.Object k,
                     EllipticPoint generator)

Specified by:

multiply in class PrimeCurve

add

public EllipticPoint add(EllipticPoint p1,
                EllipticPoint p2)

Specified by:

add in class PrimeCurve

doublee

public EllipticPoint doublee(EllipticPoint p1)

Specified by:

doublee in class PrimeCurve

toEllipticPoint

public EllipticPoint toEllipticPoint(java.security.spec.ECPoint p)

Specified by:

toEllipticPoint in class PrimeCurve