KeyPairGenDSA.java

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/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
/*
Copyright (c) 2002-2011 ymnk, JCraft,Inc. All rights reserved.

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     the documentation and/or other materials provided with the distribution.

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     derived from this software without specific prior written permission.

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package com.jcraft.jsch.jce;

import java.security.*;
import java.security.interfaces.*;

public class KeyPairGenDSA implements com.jcraft.jsch.KeyPairGenDSA{
  byte[] x;  // private
  byte[] y;  // public
  byte[] p;
  byte[] q;
  byte[] g;

  public void init(int key_size) throws Exception{
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
    keyGen.initialize(key_size, new SecureRandom());
    KeyPair pair = keyGen.generateKeyPair();
    PublicKey pubKey=pair.getPublic();
    PrivateKey prvKey=pair.getPrivate();

    x=((DSAPrivateKey)prvKey).getX().toByteArray();
    y=((DSAPublicKey)pubKey).getY().toByteArray();

    DSAParams params=((DSAKey)prvKey).getParams();
    p=params.getP().toByteArray();
    q=params.getQ().toByteArray();
    g=params.getG().toByteArray();
  }
  public byte[] getX(){return x;}
  public byte[] getY(){return y;}
  public byte[] getP(){return p;}
  public byte[] getQ(){return q;}
  public byte[] getG(){return g;}
}