- Java中DES加密算法
- 三个文件：一：ey_DES.java//对称秘钥生成及对象化保存import java.io.FileOutputStream;import java.io.ObjectOutputStream;import javax.crypto.KeyGenerator;import javax.crypto.SecretKey;public class Skey_DES{ public static void main(String args[])throws Exception { KeyGenerator kg=KeyGenerator.getInstance("DESede"); kg.init(168); SecretKey k=kg.generateKey(); FileOutputStream f=new FileOutputStream("key1.txt"); ObjectOutputStream b= new ObjectOutputStream(f); b.writeObject(k); }};二：SEnc.java//对称秘钥加密，使用字节码import java.io.*;import java.security.*;import javax.crypto.*;public class SEnc{ public static void main(String args[]) throws Exception { String s="Hello123Hello123Hello123Hello123"; FileInputStream f=new FileInputStream("key1.txt"); ObjectInputStream b=new ObjectInputStream(f); Key k=(Key)b.readObject(); Cipher cp=Cipher.getInstance("DESede"); cp.init(Cipher.ENCRYPT_MODE,k); byte ptext[]=s.getBytes("UTF8"); for(int i=0;i