org.bouncycastle.math.ec.custom.sec

Class SecT163R2Curve

java.lang.Object

org.bouncycastle.math.ec.ECCurve

org.bouncycastle.math.ec.ECCurve.AbstractF2m

org.bouncycastle.math.ec.custom.sec.SecT163R2Curve

public class SecT163R2Curve
extends ECCurve.AbstractF2m

Nested Class Summary

Nested classes/interfaces inherited from class org.bouncycastle.math.ec.ECCurve

ECCurve.AbstractF2m, ECCurve.AbstractFp, ECCurve.Config, ECCurve.F2m, ECCurve.Fp

Field Summary

Fields

Modifier and Type	Field and Description
protected SecT163R2Point	infinity

Fields inherited from class org.bouncycastle.math.ec.ECCurve

a, b, cofactor, coord, COORD_AFFINE, COORD_HOMOGENEOUS, COORD_JACOBIAN, COORD_JACOBIAN_CHUDNOVSKY, COORD_JACOBIAN_MODIFIED, COORD_LAMBDA_AFFINE, COORD_LAMBDA_PROJECTIVE, COORD_SKEWED, endomorphism, field, multiplier, order

Constructor Summary

Constructors

Constructor and Description
SecT163R2Curve()

Method Summary

Modifier and Type	Method and Description
protected ECCurve	cloneCurve()
protected ECPoint	createRawPoint(ECFieldElement x, ECFieldElement y, boolean withCompression)
protected ECPoint	createRawPoint(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, boolean withCompression)
protected ECPoint	decompressPoint(int yTilde, java.math.BigInteger X1) Decompresses a compressed point P = (xp, yp) (X9.62 s 4.2.2).
ECFieldElement	fromBigInteger(java.math.BigInteger x)
int	getFieldSize()
ECPoint	getInfinity()
int	getK1()
int	getK2()
int	getK3()
int	getM()
boolean	isKoblitz() Returns true if this is a Koblitz curve (ABC curve).
boolean	isTrinomial()
boolean	supportsCoordinateSystem(int coord)

Methods inherited from class org.bouncycastle.math.ec.ECCurve.AbstractF2m

createPoint, inverse

Methods inherited from class org.bouncycastle.math.ec.ECCurve

checkPoint, checkPoints, checkPoints, configure, createDefaultMultiplier, createPoint, decodePoint, equals, equals, getA, getAllCoordinateSystems, getB, getCofactor, getCoordinateSystem, getEndomorphism, getField, getMultiplier, getOrder, getPreCompInfo, hashCode, importPoint, normalizeAll, normalizeAll, setPreCompInfo, validatePoint, validatePoint

Methods inherited from class java.lang.Object

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

Field Detail

infinity

protected SecT163R2Point infinity

Constructor Detail

SecT163R2Curve

public SecT163R2Curve()

Method Detail

cloneCurve

protected ECCurve cloneCurve()

Specified by:

cloneCurve in class ECCurve

supportsCoordinateSystem

public boolean supportsCoordinateSystem(int coord)

Overrides:

supportsCoordinateSystem in class ECCurve

getFieldSize

public int getFieldSize()

Specified by:

getFieldSize in class ECCurve

fromBigInteger

public ECFieldElement fromBigInteger(java.math.BigInteger x)

Specified by:

fromBigInteger in class ECCurve

createRawPoint

protected ECPoint createRawPoint(ECFieldElement x,
                                 ECFieldElement y,
                                 boolean withCompression)

Specified by:

createRawPoint in class ECCurve

createRawPoint

protected ECPoint createRawPoint(ECFieldElement x,
                                 ECFieldElement y,
                                 ECFieldElement[] zs,
                                 boolean withCompression)

Specified by:

createRawPoint in class ECCurve

getInfinity

public ECPoint getInfinity()

Specified by:

getInfinity in class ECCurve

isKoblitz

public boolean isKoblitz()

Description copied from class: ECCurve.AbstractF2m

Returns true if this is a Koblitz curve (ABC curve).

Overrides:

isKoblitz in class ECCurve.AbstractF2m

Returns:

true if this is a Koblitz curve (ABC curve), false otherwise

decompressPoint

protected ECPoint decompressPoint(int yTilde,
                                  java.math.BigInteger X1)

Decompresses a compressed point P = (xp, yp) (X9.62 s 4.2.2).

Specified by:

decompressPoint in class ECCurve

Parameters:

yTilde - ~yp, an indication bit for the decompression of yp.

X1 - The field element xp.

Returns:

the decompressed point.

getM

public int getM()

isTrinomial

public boolean isTrinomial()

getK1

public int getK1()

getK2

public int getK2()

getK3

public int getK3()