Package org.bouncycastle.math.ec.custom.djb

Class Curve25519FieldElement

java.lang.Object

org.bouncycastle.math.ec.ECFieldElement

org.bouncycastle.math.ec.ECFieldElement.AbstractFp

org.bouncycastle.math.ec.custom.djb.Curve25519FieldElement

All Implemented Interfaces:

ECConstants

public class Curve25519FieldElement
extends ECFieldElement.AbstractFp

Nested Class Summary

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

ECFieldElement.AbstractF2m, ECFieldElement.AbstractFp, ECFieldElement.F2m, ECFieldElement.Fp

Field Summary

Fields

Modifier and Type	Field	Description
static final BigInteger	Q
protected int[]	x

Fields inherited from interface org.bouncycastle.math.ec.ECConstants

EIGHT, FOUR, ONE, THREE, TWO, ZERO

Constructor Summary

Constructors

Modifier	Constructor	Description
	Curve25519FieldElement()
protected	Curve25519FieldElement(int[] x)
	Curve25519FieldElement(BigInteger x)

Method Summary

Modifier and Type	Method	Description
ECFieldElement	add(ECFieldElement b)
ECFieldElement	addOne()
ECFieldElement	divide(ECFieldElement b)
boolean	equals(Object other)
String	getFieldName()
int	getFieldSize()
int	hashCode()
ECFieldElement	invert()
boolean	isOne()
boolean	isZero()
ECFieldElement	multiply(ECFieldElement b)
ECFieldElement	negate()
ECFieldElement	sqrt()	return a sqrt root - the routine verifies that the calculation returns the right value - if none exists it returns null.
ECFieldElement	square()
ECFieldElement	subtract(ECFieldElement b)
boolean	testBitZero()
BigInteger	toBigInteger()

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

bitLength, getEncoded, multiplyMinusProduct, multiplyPlusProduct, squareMinusProduct, squarePlusProduct, squarePow, toString

Methods inherited from class java.lang.Object

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

Field Details

Q

public static final BigInteger Q

x

protected int[] x

Constructor Details

Curve25519FieldElement

public Curve25519FieldElement(BigInteger x)

Curve25519FieldElement

public Curve25519FieldElement()

Curve25519FieldElement

protected Curve25519FieldElement(int[] x)

Method Details

isZero

public boolean isZero()

Overrides:

isZero in class ECFieldElement

isOne

public boolean isOne()

Overrides:

isOne in class ECFieldElement

testBitZero

public boolean testBitZero()

Overrides:

testBitZero in class ECFieldElement

toBigInteger

public BigInteger toBigInteger()

Specified by:

toBigInteger in class ECFieldElement

getFieldName

public String getFieldName()

Specified by:

getFieldName in class ECFieldElement

getFieldSize

public int getFieldSize()

Specified by:

getFieldSize in class ECFieldElement

add

public ECFieldElement add(ECFieldElement b)

Specified by:

add in class ECFieldElement

addOne

public ECFieldElement addOne()

Specified by:

addOne in class ECFieldElement

subtract

public ECFieldElement subtract(ECFieldElement b)

Specified by:

subtract in class ECFieldElement

multiply

public ECFieldElement multiply(ECFieldElement b)

Specified by:

multiply in class ECFieldElement

divide

public ECFieldElement divide(ECFieldElement b)

Specified by:

divide in class ECFieldElement

negate

public ECFieldElement negate()

Specified by:

negate in class ECFieldElement

square

public ECFieldElement square()

Specified by:

square in class ECFieldElement

invert

public ECFieldElement invert()

Specified by:

invert in class ECFieldElement

sqrt

public ECFieldElement sqrt()

return a sqrt root - the routine verifies that the calculation returns the right value - if none exists it returns null.

Specified by:

sqrt in class ECFieldElement

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object