org.bouncycastle.crypto.ec
Class ECNewPublicKeyTransform

java.lang.Object
  |
  +--org.bouncycastle.crypto.ec.ECNewPublicKeyTransform

All Implemented Interfaces:

ECPairTransform

public class ECNewPublicKeyTransform

extends java.lang.Object

implements ECPairTransform

this does your basic Elgamal encryption algorithm using EC

Constructor Summary

ECNewPublicKeyTransform()

Method Summary

protected org.bouncycastle.math.ec.ECMultiplier	createBasePointMultiplier()
void	init(CipherParameters param) initialise the EC Elgamal engine.
ECPair	transform(ECPair cipherText) Transform an existing cipher text pair using the ElGamal algorithm.

Methods inherited from class java.lang.Object

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

Constructor Detail

ECNewPublicKeyTransform

public ECNewPublicKeyTransform()

Method Detail

init

public void init(CipherParameters param)

initialise the EC Elgamal engine.

Specified by:

init in interface ECPairTransform

Parameters:

param - the necessary EC key parameters.

transform

public ECPair transform(ECPair cipherText)

Transform an existing cipher text pair using the ElGamal algorithm. Note: the input cipherText will need to be preserved in order to complete the transformation to the new public key.

Specified by:

transform in interface ECPairTransform

Parameters:

cipherText - the EC point to process.

Returns:

returns a new ECPair representing the result of the process.

createBasePointMultiplier

protected org.bouncycastle.math.ec.ECMultiplier createBasePointMultiplier()