DESedeKey

package  org.markerking;

import  java.io.FileInputStream;
import  java.io.FileOutputStream;
import  java.io.ObjectInputStream;
import  java.io.ObjectOutputStream;
import  java.security.Key;

import  javax.crypto.KeyGenerator;

/** */ /**
 * DESede密匙生成器与读取器
 * 
 * @author MarkerKing
 * @version v1.0
 * @time 2007-3-23 15:00
 * */
public   abstract   class  DESedeKey  implements  Key
... {

    /** *//**
     * 密匙写入文件
     * */
    public static void generatorKey(String fileName)
    ...{
        try
        ...{
            // 获得密匙生成器
            KeyGenerator kg = KeyGenerator.getInstance("DESede");
            // 初始化长度
            kg.init(168);
            // 生成Key
            Key key = kg.generateKey();
            FileOutputStream fos = new FileOutputStream(fileName);
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(key);
            oos.close();
            fos.close();
            System.out.println("密匙生成成功!密匙文件为"+fileName);
        }
        catch (Exception e)
        ...{
            e.printStackTrace();
        }
    }

    /** *//**
     * 获取密匙方法,已经生成的dat密匙文件
     * 
     * @return Key
     * */
    public static Key getKey(String fileName)
    ...{
        try
        ...{
            // 读取文件中的字节密匙
            FileInputStream fis = new FileInputStream(fileName);
            ObjectInputStream ois = new ObjectInputStream(fis);
            // 转换成密匙
            Key key = (Key) ois.readObject();
            ois.close();
            fis.close();
            return key;
        }
        catch (Exception e)
        ...{
            e.printStackTrace();
            return null;
        }
    }
}