package com.norteksoft.product.util;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Date;
import java.util.UUID;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
import org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper;
import com.ibm.icu.text.SimpleDateFormat;
/*字符串 DESede(3DES) 加密*/
public class ThreeDes {
/**
* @param args在java中调用sun公司提供的3DES加密解密算法时
* ，需要使 用到$JAVA_HOME/jre/lib/目录下如下的4个jar包： jce.jar
* security/US_export_policy.jar security/local_policy.jar
* ext/sunjce_provider.jar
*/
private static final String Algorithm = "DESede"; // 定义加密算法,可用
// DES,DESede,Blowfish
// keybyte为加密密钥，长度为24字节
// src为被加密的数据缓冲区（源）
public static byte[] encryptMode(byte[] keybyte, byte[] src) {
try {
// 生成密钥
SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
// 加密
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.ENCRYPT_MODE, deskey);
return c1.doFinal(src);// 在单一方面的加密或解密
} catch (java.security.NoSuchAlgorithmException e1) {
// TODO: handle exception
e1.printStackTrace();
} catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace();
} catch (java.lang.Exception e3) {
e3.printStackTrace();
}
return null;
}
// keybyte为加密密钥，长度为24字节
// src为加密后的缓冲区
public static byte[] decryptMode(byte[] keybyte, byte[] src) {
try {
// 生成密钥
SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
// 解密
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.DECRYPT_MODE, deskey);
return c1.doFinal(src);
} catch (java.security.NoSuchAlgorithmException e1) {
// TODO: handle exception
e1.printStackTrace();
} catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace();
} catch (java.lang.Exception e3) {
e3.printStackTrace();
}
return null;
}
/**
* 文件加密
* @param systemPath系统默认路径
* @param file要加密的文件
* @return
* @throws Exception
*/
public static String encryptFile(String systemPath,String file) throws Exception{
final byte[] keyBytes = { 0x11, 0x22, 0x4F, 0x58, (byte) 0x88, 0x10,
0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB, (byte) 0xDD,
0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40, 0x36,
(byte) 0xE2 }; // 24字节的密钥
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
systemPath=systemPath+"/"+format.format(new Date())+"/"+UUID.randomUUID().toString()+"/";
File f = new File(systemPath);
if(!f.exists())
f.mkdirs();
File newFile = new File(file);
int byteSize=1024*1024;
long fileLong=newFile.length();
if(fileLong<1024*1024*10){
byteSize=1024*1024;
}if(fileLong<1024*1024*100){
byteSize=byteSize*2;
}if(fileLong<1024*1024*1000){
byteSize=byteSize*4;
}else{
byteSize=byteSize*8;
}
BufferedInputStream bis = null;
FileOutputStream out = null;
try {
bis = new BufferedInputStream(new FileInputStream(newFile));
byte[] buffer = new byte[byteSize];
byte[] newbuffer = null;
int num=0;
int size=0;
while ((size=bis.read(buffer, 0, buffer.length)) != -1) {
if(size!=buffer.length){
newbuffer=new byte[size];
System.arraycopy(buffer, 0, newbuffer, 0, size);
}else{
newbuffer =buffer;
}
out = new FileOutputStream(systemPath+num+"_"+num+"_"+num);
byte[] newByte = encryptMode(keyBytes, newbuffer);
out.write(newByte, 0,newByte.length);
num++;
}
} catch (IOException e) {
e.printStackTrace();
}finally{
out.close();
bis.close();
}
return systemPath;
}
/**
* 文件加密
* @param systemPath系统默认路径
* @param file要加密的文件
* @return
* @throws Exception
*/
public static String encryptFile(String systemPath,byte[] file) throws Exception{
final byte[] keyBytes = { 0x11, 0x22, 0x4F, 0x58, (byte) 0x88, 0x10,
0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB, (byte) 0xDD,
0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40, 0x36,
(byte) 0xE2 }; // 24字节的密钥
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
systemPath=systemPath+"/"+format.format(new Date())+"/"+UUID.randomUUID().toString()+"/";
File f = new File(systemPath);
if(!f.exists())
f.mkdirs();
BufferedInputStream bis = null;
FileOutputStream out = null;
try {
bis = new BufferedInputStream(new ByteArrayInputStream(file));
byte[] buffer = new byte[1024*1024];
byte[] newbuffer = null;
int num=0;
int size=0;
while ((size=bis.read(buffer, 0, buffer.length)) != -1) {
if(size!=buffer.length){
newbuffer=new byte[size];
System.arraycopy(buffer, 0, newbuffer, 0, size);
}else{
newbuffer =buffer;
}
out = new FileOutputStream(systemPath+num+"_"+num+"_"+num);
byte[] newByte = encryptMode(keyBytes, newbuffer);
out.write(newByte, 0,newByte.length);
num++;
}
} catch (IOException e) {
e.printStackTrace();
}finally{
out.close();
bis.close();
}
return systemPath;
}
/**
* 文件解密
* @param keyBytes密钥
* @param fileFoulder加密文件夹路径
* @param file解密后的文件
* @throws IOException
*/
public static void decryptFile(String fileFoulder,String file) throws IOException{
final byte[] keyBytes = { 0x11, 0x22, 0x4F, 0x58, (byte) 0x88, 0x10,
0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB, (byte) 0xDD,
0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40, 0x36,
(byte) 0xE2 }; // 24字节的密钥
File foulder = new File(fileFoulder);
File[] files=foulder.listFiles();
if(files!=null&&files.length!=0){
int fileSize=files.length;
FileOutputStream out = new FileOutputStream(file);
for (int i=0;i<fileSize;i++) {
byte[] oldByte=FileUtils.readFileToByteArray(new File(fileFoulder+"/"+i+"_"+i+"_"+i));
byte[] newByte = decryptMode(keyBytes, oldByte);
out.write(newByte, 0, newByte.length);
}
out.close();
}
}
/**
* 文件解密
* @param keyBytes密钥
* @param fileFoulder加密文件夹路径
* @param out解密后的文件输出流
* @throws IOException
*/
public static void decryptFile(String fileFoulder,OutputStream out) throws IOException{
final byte[] keyBytes = { 0x11, 0x22, 0x4F, 0x58, (byte) 0x88, 0x10,
0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB, (byte) 0xDD,
0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40, 0x36,
(byte) 0xE2 }; // 24字节的密钥
File foulder = new File(fileFoulder);
File[] files=foulder.listFiles();
if(files!=null&&files.length!=0){
int fileSize=files.length;
for (int i=0;i<fileSize;i++) {
byte[] oldByte=FileUtils.readFileToByteArray(new File(fileFoulder+"/"+i+"_"+i+"_"+i));
byte[] newByte = decryptMode(keyBytes, oldByte);
out.write(newByte, 0, newByte.length);
}
out.close();
}
}
/**
* 文件解密
* @param keyBytes密钥
* @param fileFoulder加密文件夹路径
* @throws IOException
*/
public static byte[] decryptFile(String fileFoulder) throws IOException{
final byte[] keyBytes = { 0x11, 0x22, 0x4F, 0x58, (byte) 0x88, 0x10,
0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB, (byte) 0xDD,
0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40, 0x36,
(byte) 0xE2 }; // 24字节的密钥
ByteArrayOutputStream out = new ByteArrayOutputStream();
File foulder = new File(fileFoulder);
File[] files=foulder.listFiles();
if(files!=null&&files.length!=0){
int fileSize=files.length;
for (int i=0;i<fileSize;i++) {
byte[] oldByte=FileUtils.readFileToByteArray(new File(fileFoulder+"/"+i+"_"+i+"_"+i));
byte[] newByte = decryptMode(keyBytes, oldByte);
out.write(newByte, 0, newByte.length);
}
out.close();
}
return out.toByteArray();
}
/**
* 文件加密并上传
* @param systemPath 系统默认路径
* @return
* @throws Exception
*/
public static String encryptAndUploadFile(Long userId,String systemPath) throws Exception{
final byte[] keyBytes = { 0x11, 0x22, 0x4F, 0x58, (byte) 0x88, 0x10,
0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB, (byte) 0xDD,
0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40, 0x36,
(byte) 0xE2 }; // 24字节的密钥
HttpServletRequest request=ServletActionContext.getRequest();
File filePath=((MultiPartRequestWrapper)request).getFiles("Filedata")[0];
systemPath=systemPath+"/"+userId+"/"+UUID.randomUUID().toString()+"/";
File f = new File(systemPath);
if(!f.exists())
f.mkdirs();
int byteSize=1024*1024;
long fileLong=filePath.length();
if(fileLong<1024*1024*10){
byteSize=1024*1024;
}if(fileLong<1024*1024*100){
byteSize=byteSize*2;
}if(fileLong<1024*1024*1000){
byteSize=byteSize*4;
}else{
byteSize=byteSize*8;
}
BufferedInputStream bis = null;
FileOutputStream out = null;
try {
bis = new BufferedInputStream(new FileInputStream(filePath));
byte[] buffer = new byte[byteSize];
byte[] newbuffer = null;
int num=0;
int size=0;
while ((size=bis.read(buffer, 0, buffer.length)) != -1) {
if(size!=buffer.length){
newbuffer=new byte[size];
System.arraycopy(buffer, 0, newbuffer, 0, size);
}else{
newbuffer =buffer;
}
out = new FileOutputStream(systemPath+num+"_"+num+"_"+num);
byte[] newByte = encryptMode(keyBytes, newbuffer);
out.write(newByte, 0,newByte.length);
num++;
}
} catch (IOException e) {
e.printStackTrace();
}finally{
out.close();
bis.close();
}
return systemPath;
}
/**
* 文件解密并下载
* @param keyBytes密钥
* @param fileFoulder加密文件夹路径
* @param file解密后的文件
* @throws IOException
*/
public static void decryptAndDownloadFile(String fileFoulder,String fileName) throws IOException{
final byte[] keyBytes = { 0x11, 0x22, 0x4F, 0x58, (byte) 0x88, 0x10,
0x40, 0x38, 0x28, 0x25, 0x79, 0x51, (byte) 0xCB, (byte) 0xDD,
0x55, 0x66, 0x77, 0x29, 0x74, (byte) 0x98, 0x30, 0x40, 0x36,
(byte) 0xE2 }; // 24字节的密钥
File foulder = new File(fileFoulder);
File[] files=foulder.listFiles();
if(files!=null&&files.length!=9){
OutputStream out=null;
HttpServletResponse response=ServletActionContext.getResponse();
response.reset();
try {
int fileSize=files.length;
for (int i=0;i<fileSize;i++) {
byte[] oldByte=FileUtils.readFileToByteArray(new File(fileFoulder+"/"+i+"_"+i+"_"+i));
byte[] newByte = decryptMode(keyBytes, oldByte);
response.setContentType("application/x-download");
byte[] byname=fileName.getBytes("gbk");
fileName=new String(byname,"8859_1");
response.addHeader("Content-Disposition", "attachment;filename="+fileName);
out=response.getOutputStream();
out.write(newByte, 0, newByte.length);
}
} catch (IOException e) {
e.printStackTrace();
}finally{
out.close();
}
}
}
// public static void main(String[] args) throws Exception {
// long a = System.currentTimeMillis();
// String path=ThreeDes.encryptFile(123l,"d:/", "d:/a.rmvb");
// long b=System.currentTimeMillis();
// System.out.println((b-a)/1000);
// long c = System.currentTimeMillis();
// ThreeDes.decryptFile(path,"d:/b.rmvb" );
// long d = System.currentTimeMillis();
// System.out.println((d-c)/1000);
// }
}