Bouncy Castle Provider 1.77 · org.bouncycastle.crypto.ec.ECNewRandomnessTransform

Modifier and Type	Field and Description
private ECPublicKeyParameters	key
private BigInteger	lastK
private SecureRandom	random

Access	Constructor and Description
public	ECNewRandomnessTransform()

Method Summary

Modifier and Type	Method and Description
protected ECMultiplier	createBasePointMultiplier()
public BigInteger	Returns: a BigInteger representing the last random value. getTransformValue() Implements org.bouncycastle.crypto.ec.ECPairFactorTransform.getTransformValue. Return the last random value generated for a transform
public void	init(CipherParameters the necessary EC key parameters. param) Implements org.bouncycastle.crypto.ec.ECPairTransform.init. initialise the underlying EC ElGamal engine.
public ECPair	Returns: returns a new ECPair representing the result of the process. transform(ECPair the EC point to process. cipherText) Implements org.bouncycastle.crypto.ec.ECPairTransform.transform. Transform an existing cipher test pair using the ElGamal algorithm.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

key	back to summary
private ECPublicKeyParameters key

lastK	back to summary
private BigInteger lastK

random	back to summary
private SecureRandom random

ECNewRandomnessTransform	back to summary
public ECNewRandomnessTransform()

createBasePointMultiplier	back to summary
protected ECMultiplier createBasePointMultiplier()

getTransformValue	back to summary
public BigInteger getTransformValue() Implements org.bouncycastle.crypto.ec.ECPairFactorTransform.getTransformValue. Return the last random value generated for a transform Returns:BigInteger a BigInteger representing the last random value.

getTransformValue

public BigInteger getTransformValue()

Return the last random value generated for a transform

init	back to summary
public void init(CipherParameters param) Implements org.bouncycastle.crypto.ec.ECPairTransform.init. initialise the underlying EC ElGamal engine. Parameters param:CipherParameters the necessary EC key parameters.

init

public void init(CipherParameters param)

initialise the underlying EC ElGamal engine.

Parameters

transform	back to summary
public ECPair transform(ECPair cipherText) Implements org.bouncycastle.crypto.ec.ECPairTransform.transform. Transform an existing cipher test pair using the ElGamal algorithm. Note it is assumed this transform has been initialised with the same public key that was used to create the original cipher text. Parameters cipherText:ECPair the EC point to process. Returns:ECPair returns a new ECPair representing the result of the process.

transform

public ECPair transform(ECPair cipherText)

Transform an existing cipher test pair using the ElGamal algorithm.

Note

it is assumed this transform has been initialised with the same public key that was used to create the original cipher text.

Parameters

Returns:ECPair

returns a new ECPair representing the result of the process.