de.flexiprovider.core.elgamal
Class ElGamalPrivateKeySpec

java.lang.Object
  |
  +--de.flexiprovider.core.elgamal.ElGamalPrivateKeySpec

All Implemented Interfaces:

KeySpec, java.security.spec.KeySpec

public class ElGamalPrivateKeySpec

extends java.lang.Object

implements KeySpec

This class specifies an ElGamal private key.

Author:

Thomas Wahrenbruch

See Also:

ElGamalKeyFactory

Constructor Summary

ElGamalPrivateKeySpec(FlexiBigInt modulus, FlexiBigInt generator, FlexiBigInt publicA, FlexiBigInt a)
The constructor.

Method Summary

FlexiBigInt	getA()
FlexiBigInt	getGenerator()
FlexiBigInt	getModulus()
FlexiBigInt	getPublicA()

Methods inherited from class java.lang.Object

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

Constructor Detail

ElGamalPrivateKeySpec

public ElGamalPrivateKeySpec(FlexiBigInt modulus,
                             FlexiBigInt generator,
                             FlexiBigInt publicA,
                             FlexiBigInt a)

The constructor.

Parameters:

modulus - - the prime modulus which specifies the group

generator - - a generator of the group

publicA - - the public value A = g^a mod modulus

a - - the private value a

Method Detail

getModulus

public final FlexiBigInt getModulus()

Returns:

the prime modulus

getGenerator

public final FlexiBigInt getGenerator()

Returns:

the generator

getPublicA

public final FlexiBigInt getPublicA()

Returns:

the public value A = g^a mod modulus

getA

public final FlexiBigInt getA()

Returns:

the private value a