javax.crypto.spec

Class DHGenParameterSpec

  1. java.lang.Object
  2. extended byjavax.crypto.spec.DHGenParameterSpec
All implemented interfaces:
java.security.spec.AlgorithmParameterSpec

  1. public class DHGenParameterSpec
  2. extends java.lang.Object
  3. implements java.security.spec.AlgorithmParameterSpec
This class specifies the set of parameters used for generating Diffie-Hellman (system) parameters for use in Diffie-Hellman key agreement. This is typically done by a central authority.

The central authority, after computing the parameters, must send this information to the parties looking to agree on a secret key.

Since:
1.4
Version:
1.16, 01/06/04
Author:
Jan Luehe
See Also:
DHParameterSpec

Constructor Summary

Constructor and Description
DHGenParameterSpec(int primeSize,int exponentSize)
Constructs a parameter set for the generation of Diffie-Hellman (system) parameters.

Method Summary

Modifier and Type Method and Description
  1. int
getExponentSize()
Returns the size in bits of the random exponent (private value).
  1. int
getPrimeSize()
Returns the size in bits of the prime modulus.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DHGenParameterSpec

  1. public DHGenParameterSpec(int primeSize,
  2. int exponentSize)
Constructs a parameter set for the generation of Diffie-Hellman (system) parameters. The constructed parameter set can be used to initialize an AlgorithmParameterGenerator object for the generation of Diffie-Hellman parameters.
Parameters:
primeSize - the size (in bits) of the prime modulus.
exponentSize - the size (in bits) of the random exponent.

Method Detail

getPrimeSize

  1. public int getPrimeSize()
Returns the size in bits of the prime modulus.
Returns:
the size in bits of the prime modulus

getExponentSize

  1. public int getExponentSize()
Returns the size in bits of the random exponent (private value).
Returns:
the size in bits of the random exponent (private value)