android平台上的加密程序源代码 哪位朋友能够不吝赐教一个个android平台上的加密程序啊,就是加密文件的那种,小弟在这里先行谢过了!献上全部分值! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 java上的加密算法就可以吧?应该很多这种程序 package day20.editor;import java.awt.*;import java.awt.event.*;import javax.swing.*;import java.io.*;public class FileEncrypt { public static void main(String[] args) { new FileEncryptFrame().init(); }}class FileEncryptFrame extends JFrame{ JPanel jp1; JPanel jp2; JLabel jlb1; JLabel jlb2; JFileChooser jfc; JCheckBox jcb; JTextField jtf; JButton jb1; JButton jb2; JProgressBar jpb; class RefreshProgressBarThread extends Thread{ public RefreshProgressBarThread(){ } public void run(){ } } public FileEncryptFrame(){ super("文件加密/解密器 v1.0"); jp1=new JPanel(); jp2=new JPanel(); jlb1=new JLabel("选择要加密/解密的文件:"); jlb2=new JLabel("选择加密/解密算子(0-255):"); jfc=new JFileChooser(); jtf=new JTextField(10); jcb=new JCheckBox("覆盖原文件"); jb1=new JButton("加密/解密"); jb2=new JButton("取消"); jpb=new JProgressBar(); jpb.setStringPainted(true); } public void init(){ setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE ); this.setLayout(new BorderLayout()); this.add(jp1,BorderLayout.CENTER); this.add(jp2,BorderLayout.SOUTH); jp1.setAlignmentX(JPanel.LEFT_ALIGNMENT); jp1.setLayout(new FlowLayout(FlowLayout.LEFT)); jfc.setControlButtonsAreShown(false); jp1.add(jlb1); jp1.add(jfc); jp1.add(jlb2); jp1.add(jtf); jp1.add(jcb); jp1.add(jpb); jp2.add(jb1); jp2.add(jb2); setVisible(true); setSize(520,480); this.setResizable(false); setEvent(); } public void setEvent(){ this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jb1.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ File f=jfc.getSelectedFile(); int code=Integer.parseInt(jtf.getText()); new Encrypter(code,f,jcb.isSelected()).encode(); final JDialog jd=new JDialog(FileEncryptFrame.this,"加密成功!"); jd.add(new JLabel("文件加密成功!"),BorderLayout.NORTH); JButton jbok; jd.add(jbok=new JButton("确定"),BorderLayout.SOUTH); jbok.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ jd.dispose(); } }); jd.setLocationRelativeTo(FileEncryptFrame.this); jd.setSize(300,200); jd.setVisible(true); } }); jb2.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ System.exit(0);} }); }}class Encrypter{ int code; boolean rewrite; File sourceFile; FileInputStream fin; FileOutputStream fout; String sourceFileName; String objFileName; public Encrypter(int c,File file,boolean rewrite) { code=c; sourceFile=file; this.rewrite=rewrite; sourceFileName=sourceFile.getAbsolutePath(); System.out.print(sourceFileName); int indexOfDot=sourceFileName.lastIndexOf('.'); System.out.print(indexOfDot); if(indexOfDot==-1){//如果原文件名不包含扩展名 objFileName=sourceFileName+".sec"; }else {//如果原文件名包含扩展名 String postfixName=sourceFileName.substring(indexOfDot); if(postfixName.equals(".sec")){//如果扩展名是.sec objFileName=sourceFileName.substring(0,indexOfDot); }else{ objFileName=sourceFileName+".sec"; } } } public void encode(){ if(rewrite){//覆盖原文件 RandomAccessFile fra=null; try { fra=new RandomAccessFile(sourceFile,"rw"); int temp; while((temp=fra.read())!=-1){ fra.seek(fra.getFilePointer()-1); fra.write(temp^code); } //System.out.println(objFileName); //System.out.println(sourceFile.renameTo(new File("objFileName"))); } catch (Exception e) { e.printStackTrace(); }finally{ if(fra!=null)try{fra.close();}catch(IOException e){} } }else{//不覆盖原文件 FileInputStream fis=null; FileOutputStream fos=null; try { fis=new FileInputStream(sourceFile); fos=new FileOutputStream(objFileName); while(fis.available()>0){ fos.write(fis.read()^code); } fos.flush(); } catch (Exception e) { e.printStackTrace(); }finally{ if(fis!=null)try{fis.close();}catch(IOException e){} if(fos!=null)try{fos.close();}catch(IOException e){} } }}} Dialog提示用户打开网络连接后返回Activity的问题 求助Android crash 问题 ! 急,xt910无法进行真机调试 上传图片的方式 Launcher桌面图标挤推动画 求助:新手寻好的Android入门教程以及学习规划(有java基础) 新手提问 一般什么时候需要定义一个新类? 求助Speex压缩和解压缩方法如何用 急需一个小型计算器的代码,有没有大神给一下 viewpager+fragment实现切换无法打开,闪退 userdata.img镜像的一个问题 edittextpreference 怎样设置,可以让输入内容只是数字呢…
应该很多这种程序
import java.awt.event.*;
import javax.swing.*;
import java.io.*;public class FileEncrypt {
public static void main(String[] args) {
new FileEncryptFrame().init();
}
}
class FileEncryptFrame extends JFrame{
JPanel jp1;
JPanel jp2;
JLabel jlb1;
JLabel jlb2;
JFileChooser jfc;
JCheckBox jcb;
JTextField jtf;
JButton jb1;
JButton jb2;
JProgressBar jpb;
class RefreshProgressBarThread extends Thread{
public RefreshProgressBarThread(){
}
public void run(){
}
}
public FileEncryptFrame(){
super("文件加密/解密器 v1.0");
jp1=new JPanel();
jp2=new JPanel();
jlb1=new JLabel("选择要加密/解密的文件:");
jlb2=new JLabel("选择加密/解密算子(0-255):");
jfc=new JFileChooser();
jtf=new JTextField(10);
jcb=new JCheckBox("覆盖原文件");
jb1=new JButton("加密/解密");
jb2=new JButton("取消");
jpb=new JProgressBar();
jpb.setStringPainted(true);
}
public void init(){
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
this.setLayout(new BorderLayout());
this.add(jp1,BorderLayout.CENTER);
this.add(jp2,BorderLayout.SOUTH);
jp1.setAlignmentX(JPanel.LEFT_ALIGNMENT);
jp1.setLayout(new FlowLayout(FlowLayout.LEFT));
jfc.setControlButtonsAreShown(false);
jp1.add(jlb1);
jp1.add(jfc);
jp1.add(jlb2);
jp1.add(jtf);
jp1.add(jcb);
jp1.add(jpb);
jp2.add(jb1);
jp2.add(jb2);
setVisible(true);
setSize(520,480);
this.setResizable(false);
setEvent();
}
public void setEvent(){
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jb1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
File f=jfc.getSelectedFile();
int code=Integer.parseInt(jtf.getText());
new Encrypter(code,f,jcb.isSelected()).encode();
final JDialog jd=new JDialog(FileEncryptFrame.this,"加密成功!");
jd.add(new JLabel("文件加密成功!"),BorderLayout.NORTH);
JButton jbok;
jd.add(jbok=new JButton("确定"),BorderLayout.SOUTH);
jbok.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
jd.dispose();
}
});
jd.setLocationRelativeTo(FileEncryptFrame.this);
jd.setSize(300,200);
jd.setVisible(true);
}
});
jb2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.exit(0);}
});
}
}class Encrypter{
int code;
boolean rewrite;
File sourceFile;
FileInputStream fin;
FileOutputStream fout;
String sourceFileName;
String objFileName;
public Encrypter(int c,File file,boolean rewrite)
{ code=c;
sourceFile=file;
this.rewrite=rewrite;
sourceFileName=sourceFile.getAbsolutePath();
System.out.print(sourceFileName);
int indexOfDot=sourceFileName.lastIndexOf('.');
System.out.print(indexOfDot);
if(indexOfDot==-1){//如果原文件名不包含扩展名
objFileName=sourceFileName+".sec";
}else {//如果原文件名包含扩展名
String postfixName=sourceFileName.substring(indexOfDot);
if(postfixName.equals(".sec")){//如果扩展名是.sec
objFileName=sourceFileName.substring(0,indexOfDot);
}else{
objFileName=sourceFileName+".sec";
}
}
}
public void encode(){
if(rewrite){//覆盖原文件
RandomAccessFile fra=null;
try {
fra=new RandomAccessFile(sourceFile,"rw");
int temp;
while((temp=fra.read())!=-1){
fra.seek(fra.getFilePointer()-1);
fra.write(temp^code);
}
//System.out.println(objFileName);
//System.out.println(sourceFile.renameTo(new File("objFileName")));
} catch (Exception e) {
e.printStackTrace();
}finally{
if(fra!=null)try{fra.close();}catch(IOException e){}
}
}else{//不覆盖原文件
FileInputStream fis=null;
FileOutputStream fos=null;
try {
fis=new FileInputStream(sourceFile);
fos=new FileOutputStream(objFileName);
while(fis.available()>0){
fos.write(fis.read()^code);
}
fos.flush();
} catch (Exception e) {
e.printStackTrace();
}finally{
if(fis!=null)try{fis.close();}catch(IOException e){}
if(fos!=null)try{fos.close();}catch(IOException e){}
}
}}
}