rijndaelkeygenerator.java

面向应用的智能安全代理平台和工具包是一个综合网络应用的安全共性需求而设计和实现的一个通用性的网络信息安全应用支撑平台

// Decompiled by Jad v1.5.7. Copyright 1997-99 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   RijndaelKeyGenerator.java

package cn.ac.ict.crypto.provider.Rijndael;

import java.security.InvalidAlgorithmParameterException;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.KeyGeneratorSpi;
import javax.crypto.SecretKey;

// Referenced classes of package cn.ac.ict.crypto.provider.Rijndael:
//            RijndaelKey

public class RijndaelKeyGenerator extends KeyGeneratorSpi
{

    public RijndaelKeyGenerator()
    {
    }

    protected void engineInit(AlgorithmParameterSpec params, SecureRandom random)
        throws InvalidAlgorithmParameterException
    {
        throw new InvalidAlgorithmParameterException("Not Implemented");
    }

    protected void engineInit(SecureRandom random)
    {
        rand = random;
        keyLength = 16;
    }

    protected void engineInit(int strength, SecureRandom random)
    {
        keyLength = strength;
        rand = random;
    }

    protected SecretKey engineGenerateKey()
    {
        if(rand == null)
            rand = new SecureRandom();
        byte bytes[] = new byte[keyLength];
        RijndaelKey key = null;
        rand.nextBytes(bytes);
        try
        {
            key = new RijndaelKey(bytes);
            for(int i = 0; i < keyLength; i++)
                bytes[i] = 0;

        }
        catch(Exception e)
        {
            throw new RuntimeException("RijndaelKeyGenerator: " + e);
        }
        return key;
    }

    public static final String ident = "$Id: RijndaelKeyGenerator.java,v 0.0 2000/12/26 $";
    SecureRandom rand;
    private int keyLength;
}