Package org.bouncycastle.math.ec

Class ECFieldElement

java.lang.Object

org.bouncycastle.math.ec.ECFieldElement

All Implemented Interfaces:

ECConstants

Direct Known Subclasses:

ECFieldElement.F2m, ECFieldElement.Fp, SecP192K1FieldElement, SecP192R1FieldElement, SecP224K1FieldElement, SecP224R1FieldElement, SecP256K1FieldElement, SecP256R1FieldElement, SecP384R1FieldElement, SecP521R1FieldElement

public abstract class ECFieldElement
extends Object
implements ECConstants

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ECFieldElement.F2m	Class representing the Elements of the finite field F2m in polynomial basis (PB) representation.
static class	ECFieldElement.Fp

Field Summary

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

FOUR, ONE, THREE, TWO, ZERO

Constructor Summary

Constructors

Constructor	Description
ECFieldElement()

Method Summary

Modifier and Type	Method	Description
abstract ECFieldElement	add(ECFieldElement b)
abstract ECFieldElement	addOne()
int	bitLength()
abstract ECFieldElement	divide(ECFieldElement b)
byte[]	getEncoded()
abstract String	getFieldName()
abstract int	getFieldSize()
abstract ECFieldElement	invert()
boolean	isOne()
boolean	isZero()
abstract ECFieldElement	multiply(ECFieldElement b)
ECFieldElement	multiplyMinusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
ECFieldElement	multiplyPlusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
abstract ECFieldElement	negate()
abstract ECFieldElement	sqrt()
abstract ECFieldElement	square()
ECFieldElement	squareMinusProduct(ECFieldElement x, ECFieldElement y)
ECFieldElement	squarePlusProduct(ECFieldElement x, ECFieldElement y)
abstract ECFieldElement	subtract(ECFieldElement b)
boolean	testBitZero()
abstract BigInteger	toBigInteger()
String	toString()	Returns a string containing a concise, human-readable description of this object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ECFieldElement

public ECFieldElement()

Method Detail

toBigInteger

public abstract BigInteger toBigInteger()

getFieldName

public abstract String getFieldName()

getFieldSize

public abstract int getFieldSize()

add

public abstract ECFieldElement add(ECFieldElement b)

addOne

public abstract ECFieldElement addOne()

subtract

public abstract ECFieldElement subtract(ECFieldElement b)

multiply

public abstract ECFieldElement multiply(ECFieldElement b)

divide

public abstract ECFieldElement divide(ECFieldElement b)

negate

public abstract ECFieldElement negate()

square

public abstract ECFieldElement square()

invert

public abstract ECFieldElement invert()

sqrt

public abstract ECFieldElement sqrt()

bitLength

public int bitLength()

isOne

public boolean isOne()

isZero

public boolean isZero()

multiplyMinusProduct

public ECFieldElement multiplyMinusProduct(ECFieldElement b,
                                           ECFieldElement x,
                                           ECFieldElement y)

multiplyPlusProduct

public ECFieldElement multiplyPlusProduct(ECFieldElement b,
                                          ECFieldElement x,
                                          ECFieldElement y)

squareMinusProduct

public ECFieldElement squareMinusProduct(ECFieldElement x,
                                         ECFieldElement y)

squarePlusProduct

public ECFieldElement squarePlusProduct(ECFieldElement x,
                                        ECFieldElement y)

testBitZero

public boolean testBitZero()

toString

public String toString()

Description copied from class: Object

Returns a string containing a concise, human-readable description of this object. Subclasses are encouraged to override this method and provide an implementation that takes into account the object's type and data. The default implementation is equivalent to the following expression:

   getClass().getName() + '@' + Integer.toHexString(hashCode())

See Writing a useful toString method if you intend implementing your own toString method.

Overrides:

toString in class Object

Returns:

a printable representation of this object.

getEncoded

public byte[] getEncoded()