jiami.java

文件加密和解密This is a software about add secret!It can add secret to your personal file!So welcome to eve

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import java.io.*;
import javax.swing.JOptionPane;
public class Jiami {
    //@SuppressWarnings("empty-statement")
    public static void main(String[] args) throws IOException{     
        //加密
      String message=JOptionPane.showInputDialog(null,"请输入您要加密的语句：");
      String secre1=JOptionPane.showInputDialog(null,"请输入你的密码(最好是数字)：");
      char[]   c   =    (secre1+"*************************************************" +
              "*****************************************************************" +
              "*****************************************************************" +
              "********************************************************").toCharArray();//构建密码

      char[]   a   =    (message+"&").toCharArray();//讲加密语句转化到数组中以便进行异或加密操作
      byte[]   d   =    new byte[300];//该数组用来保存密文
      for   (int   i   =   0;   i   <   a.length;   i++)   {
          
          a[i]   =   (char)   (a[i]   ^  c[i]);//将原文或密钥进行异或操作
          d[i]   =   (byte)   (a[i]);//保存密文
      }
       FileOutputStream output=new FileOutputStream("加密后的文件.txt");
       output.write(d);//将加密后的密文保存到问件
      JOptionPane.showMessageDialog(null, "文件加密成功，已经保存在程序当前目录下的《加密后的文件.txt》中","密文",JOptionPane.QUESTION_MESSAGE);
    }//输出加密成功信息给客户
}