Class ECCurve.Fp

java.lang.Object

org.gudy.bouncycastle.math.ec.ECCurve

org.gudy.bouncycastle.math.ec.ECCurve.Fp

Enclosing class:

ECCurve

public static class ECCurve.Fp
extends ECCurve

Elliptic curve over Fp

Nested Class Summary

Nested classes/interfaces inherited from class ECCurve

ECCurve.F2m, ECCurve.Fp

Field Summary

Fields

Modifier and Type	Field	Description
(package private) ECPoint.Fp	infinity
(package private) BigInteger	q

Fields inherited from class ECCurve

a, b

Constructor Summary

Constructors

Constructor	Description
Fp(BigInteger q, BigInteger a, BigInteger b)

Method Summary

Modifier and Type	Method	Description
ECPoint	createPoint(BigInteger x, BigInteger y, boolean withCompression)
ECPoint	decodePoint(byte[] encoded)	Decode a point on this curve from its ASN.1 encoding.
boolean	equals(Object anObject)
ECFieldElement	fromBigInteger(BigInteger x)
int	getFieldSize()
ECPoint	getInfinity()
BigInteger	getQ()
int	hashCode()

Methods inherited from class ECCurve

getA, getB

Methods inherited from class Object

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

Field Details

q

BigInteger q

infinity

ECPoint.Fp infinity

Constructor Details

Fp

public Fp(BigInteger q,
 BigInteger a,
 BigInteger b)

Method Details

getQ

public BigInteger getQ()

getFieldSize

public int getFieldSize()

Specified by:

getFieldSize in class ECCurve

fromBigInteger

public ECFieldElement fromBigInteger(BigInteger x)

Specified by:

fromBigInteger in class ECCurve

createPoint

public ECPoint createPoint(BigInteger x,
 BigInteger y,
 boolean withCompression)

Specified by:

createPoint in class ECCurve

decodePoint

public ECPoint decodePoint(byte[] encoded)

Decode a point on this curve from its ASN.1 encoding. The different encodings are taken account of, including point compression for Fp (X9.62 s 4.2.1 pg 17).

Specified by:

decodePoint in class ECCurve

Returns:

The decoded point.

getInfinity

public ECPoint getInfinity()

Specified by:

getInfinity in class ECCurve

equals

public boolean equals(Object anObject)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object