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Posted on 2009-06-02 09:34 Gavin.lee 阅读(402) 评论(0) 编辑 收藏 所属分类: java SE & EE
续加密工具类（一），这个我没用过，但是看上去没什么问题，而且详细到受不了。
 package com.Gavin.tools.des;
import java.util.ResourceBundle;
  /** *//**
 * @descripte load resource
* @author Gavin.lee
* @date 2009-5-19上午09:49:32
* @version 1.0
*
 */
public class ResourceLoader  {
private ResourceBundle resBundle;
  public ResourceLoader(String resourceName) {
resBundle = ResourceBundle.getBundle(resourceName);
 }
public String getString(String key) {
return resBundle.getString(key);
}
public static void main(String args[]) {
new ResourceLoader("config").getString("username");
}
}
package com.Gavin.tools.des;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ResourceBundle;
import java.util.Locale;
public class Util {
/** *//**
* 资源读取类
*/
private static ResourceBundle resources = null;
/** *//**
* 初始化资源
*/
static {
new Util();
}
public Util() {
resources = ResourceBundle.getBundle("algorithm", Locale.getDefault());
}
/** *//**
* 读取源文件内容
* @param filename String 文件路径
* @throws IOException
* @return byte[] 文件内容
*/
public static byte[] readFile(String filename) throws IOException {
File file = new File(filename);
if (filename == null || filename.equals("")) {
throw new NullPointerException("无效的文件路径");
}
long len = file.length();
byte[] bytes = new byte[(int) len];
BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream(file));
int r = bufferedInputStream.read(bytes);
if (r != len)
throw new IOException("读取文件不正确");
bufferedInputStream.close();
return bytes;
}
/** *//**
* 将加密的数据写入文件
* @param data byte[]
* @throws IOException
*/
public static void writeFile(byte[] data, String filename)
throws IOException {
File file = new File(filename);
// System.out.println(file.getParentFile());
file.getParentFile().mkdirs();
BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(new FileOutputStream(file));
bufferedOutputStream.write(data);
bufferedOutputStream.close();
}
/** *//**
* 从jar文件里读取class
* @param filename String
* @throws IOException
* @return byte[]
*/
public byte[] readFileJar(String filename) throws IOException {
BufferedInputStream bufferedInputStream = new BufferedInputStream(
getClass().getResource(filename).openStream());
int len = bufferedInputStream.available();
byte[] bytes = new byte[len];
int r = bufferedInputStream.read(bytes);
if (len != r) {
bytes = null;
throw new IOException("读取文件不正确");
}
bufferedInputStream.close();
return bytes;
}
/** *//**
* 获得密码生成法则
* @return String
*/
public static String getAlgorithm() {
return resources.getString("algorithm");
}
/** *//**
* 获得值
* @param skey String
* @return String
*/
public static String getValue(String skey) {
return resources.getString(skey);
}
}
package com.Gavin.tools.des;
import java.security.SecureRandom;
import javax.crypto.KeyGenerator;
import java.security.NoSuchAlgorithmException;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.crypto.SecretKey;
import com.Gavin.tools.util.WriteLog;
import java.io.*;
public class CreateKey {
String keyfilepath = "";
public CreateKey() {
this.keyfilepath = new ResourceLoader("algorithm").getString("keypath");
}
/** *//**
* 获得密匙字节内容
* @throws IOException
* @return byte[]
*/
public byte[] getKeyByte() throws IOException {
byte[] bytes = Util.readFile(keyfilepath);
return bytes;
}
public void CreateKeyFile(String filename) throws IOException,
NoSuchAlgorithmException {
this.keyfilepath = filename;
if (filename == null || filename.equals("")) {
throw new NullPointerException("无效的文件路径");
}
createKey();
}
/** *//**
* 生成密匙
* @throws NoSuchAlgorithmException
* @throws IOException
*/
private void createKey() throws NoSuchAlgorithmException, IOException {
SecureRandom secureRandom = new SecureRandom();
// 为我们选择的DES算法生成一个KeyGenerator对象
KeyGenerator kg = KeyGenerator.getInstance(Util.getValue("algorithm"));
// keyfilepath = Util.getValue("keypath");
kg.init(secureRandom);
// 生成密钥
SecretKey key = kg.generateKey();
// 将密钥数据保存为文件供以后使用
System.out.println(Util.getValue("algorithm"));
System.out.println(keyfilepath);
Util.writeFile(key.getEncoded(), keyfilepath);
}
/** *//**
* 获得密匙文件路径
* @return String
*/
public String getKeyFilePath() {
return keyfilepath;
}
public static void main(String args[]) {
CreateKey cKey = new CreateKey();
try {
cKey.createKey();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
package com.Gavin.tools.des;
import java.security.SecureRandom;
import java.io.*;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.Cipher;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import java.lang.reflect.Constructor;
import java.security.spec.KeySpec;
import java.lang.reflect.InvocationTargetException;
public class EncryptData {
private String keyfilepath = null;
// public EncryptData() {
// }
public EncryptData() {
this.keyfilepath = new ResourceLoader("algorithm").getString("keypath");
}
/** *//**
* 加密文件
* @param filename String 源路径
* @param filenamekey String 加密后的路径
*/
public void createEncryptData(String filename, String filenamekey)
throws IllegalStateException, IllegalBlockSizeException,
BadPaddingException, NoSuchPaddingException,
InvalidKeySpecException, NoSuchAlgorithmException,
InvalidKeyException, IOException, InstantiationException,
IllegalAccessException, IllegalArgumentException,
InvocationTargetException, NoSuchMethodException,
SecurityException, ClassNotFoundException, IllegalStateException,
IllegalBlockSizeException, BadPaddingException,
NoSuchPaddingException, InvalidKeySpecException,
NoSuchAlgorithmException, InvalidKeyException, IOException {
//验证keyfile
if (keyfilepath == null || keyfilepath.equals("")) {
throw new NullPointerException("无效的key文件路径");
}
encryptData(filename, filenamekey);
}
/** *//**
* 加密类文件
* @param filename String 原始的类文件
* @param encryptfile String 加密后的类文件
* @throws IOException
* @throws InvalidKeyException
* @throws NoSuchAlgorithmException
* @throws InvalidKeySpecException
* @throws NoSuchPaddingException
* @throws NoSuchAlgorithmException
* @throws BadPaddingException
* @throws IllegalBlockSizeException
* @throws IllegalStateException
*/
private void encryptData(String filename, String encryptfile)
throws IOException, InvalidKeyException, NoSuchAlgorithmException,
InvalidKeySpecException, NoSuchPaddingException,
NoSuchAlgorithmException, BadPaddingException,
IllegalBlockSizeException, IllegalStateException,
ClassNotFoundException, SecurityException, NoSuchMethodException,
InvocationTargetException, IllegalArgumentException,
IllegalAccessException, InstantiationException {
byte data[] = Util.readFile(filename);
// 执行加密操作
byte encryptedClassData[] = getencryptData(data);
// 保存加密后的文件，覆盖原有的类文件。
Util.writeFile(encryptedClassData, encryptfile);
}
/** *//**
* 直接获得加密数据
* @param bytes byte[]
* @throws IllegalStateException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
* @throws InvalidKeyException
* @throws NoSuchPaddingException
* @throws InvalidKeySpecException
* @throws NoSuchAlgorithmException
* @throws InstantiationException
* @throws IllegalAccessException
* @throws IllegalArgumentException
* @throws InvocationTargetException
* @throws NoSuchMethodException
* @throws SecurityException
* @throws ClassNotFoundException
* @throws IOException
* @return byte[]
*/
public byte[] createEncryptData(byte[] bytes) throws IllegalStateException,
IllegalBlockSizeException, BadPaddingException,
InvalidKeyException, NoSuchPaddingException,
InvalidKeySpecException, NoSuchAlgorithmException,
InstantiationException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException,
NoSuchMethodException, SecurityException, ClassNotFoundException,
IOException {
bytes = getencryptData(bytes);
return bytes;
}
private byte[] getencryptData(byte[] bytes) throws IOException,
ClassNotFoundException, SecurityException, NoSuchMethodException,
InvocationTargetException, IllegalArgumentException,
IllegalAccessException, InstantiationException,
NoSuchAlgorithmException, InvalidKeySpecException,
NoSuchPaddingException, NoSuchAlgorithmException,
InvalidKeyException, BadPaddingException,
IllegalBlockSizeException, IllegalStateException {
// 产生一个可信任的随机数源
SecureRandom sr = new SecureRandom();
//从密钥文件key Filename中得到密钥数据
byte[] rawKeyData = Util.readFile(keyfilepath);
// 从原始密钥数据创建DESKeySpec对象
Class classkeyspec = Class.forName(Util.getValue("keyspec"));
Constructor constructor = classkeyspec
.getConstructor(new Class[] { byte[].class });
KeySpec dks = (KeySpec) constructor
.newInstance(new Object[] { rawKeyData });
// 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(Util
.getAlgorithm());
SecretKey key = keyFactory.generateSecret(dks);
// Cipher对象实际完成加密操作
Cipher cipher = Cipher.getInstance(Util.getAlgorithm());
// 用密钥初始化Cipher对象
cipher.init(Cipher.ENCRYPT_MODE, key, sr);
// 执行加密操作
bytes = cipher.doFinal(bytes);
// 返回字节数组
return bytes;
}
/** *//**
* 设置key文件路径
* @param keyfile String
*/
public void setKeyFile(String keyfile) {
this.keyfilepath = keyfile;
}
}
package com.Gavin.tools.des;
import java.security.SecureRandom;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.SecretKeyFactory;
import javax.crypto.SecretKey;
import javax.crypto.Cipher;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import java.security.spec.KeySpec;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.io.ByteArrayInputStream;
public class UnEncryptData {
private String keyfilepath = "";
public UnEncryptData() {
}
public UnEncryptData(String keyfile) {
this.keyfilepath = keyfile;
}
public void createUnEncryptData(String encryptfile, String filename)
throws IllegalStateException, IllegalBlockSizeException,
BadPaddingException, NoSuchPaddingException,
InvalidKeySpecException, NoSuchAlgorithmException,
InvalidKeyException, IOException, NoSuchMethodException,
SecurityException, InstantiationException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException,
ClassNotFoundException, IllegalStateException,
IllegalBlockSizeException, BadPaddingException,
NoSuchPaddingException, InvalidKeySpecException,
NoSuchAlgorithmException, InvalidKeyException, IOException {
//验证keyfile
if (keyfilepath == null || keyfilepath.equals("")) {
throw new NullPointerException("无效的key文件路径");
}
unEncryptData(encryptfile, filename);
}
/** *//**
* 解密类文件
* @param encryptfile String 经过加密的文件
* @param filename String 解密后的文件
* @throws IOException
* @throws InvalidKeyException
* @throws NoSuchAlgorithmException
* @throws InvalidKeySpecException
* @throws NoSuchPaddingException
* @throws NoSuchAlgorithmException
* @throws BadPaddingException
* @throws IllegalBlockSizeException
* @throws IllegalStateException
*/
private void unEncryptData(String encryptfile, String filename)
throws IOException, IllegalStateException,
IllegalBlockSizeException, BadPaddingException,
InvalidKeyException, NoSuchPaddingException,
InvalidKeySpecException, NoSuchAlgorithmException,
InstantiationException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException,
NoSuchMethodException, SecurityException, ClassNotFoundException,
IOException {
// 获得经过加密的数据
byte[] data = Util.readFile(encryptfile);
//执行解密操作
byte decryptedData[] = getunEncryptData(data);
// 然后将解密后的数据转化成原来的类文件。
Util.writeFile(decryptedData, filename);
}
/** *//**
* 解密字节数组
* @param bytes byte[]
* @throws IllegalStateException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
* @throws InvalidKeyException
* @throws NoSuchPaddingException
* @throws InvalidKeySpecException
* @throws NoSuchAlgorithmException
* @throws InstantiationException
* @throws IllegalAccessException
* @throws IllegalArgumentException
* @throws InvocationTargetException
* @throws NoSuchMethodException
* @throws SecurityException
* @throws ClassNotFoundException
* @throws IOException
* @return byte[]
*/
public byte[] createUnEncryptData(byte[] bytes)
throws IllegalStateException, IllegalBlockSizeException,
BadPaddingException, InvalidKeyException, NoSuchPaddingException,
InvalidKeySpecException, NoSuchAlgorithmException,
InstantiationException, IllegalAccessException,
IllegalArgumentException, InvocationTargetException,
NoSuchMethodException, SecurityException, ClassNotFoundException,
IOException {
bytes = getunEncryptData(bytes);
return bytes;
}
/** *//**
*
* @param bytes byte[]
* @throws IOException
* @throws ClassNotFoundException
* @throws SecurityException
* @throws NoSuchMethodException
* @throws InvocationTargetException
* @throws IllegalArgumentException
* @throws IllegalAccessException
* @throws InstantiationException
* @throws NoSuchAlgorithmException
* @throws InvalidKeySpecException
* @throws NoSuchPaddingException
* @throws NoSuchAlgorithmException
* @throws InvalidKeyException
* @throws BadPaddingException
* @throws IllegalBlockSizeException
* @throws IllegalStateException
* @return byte[]
*/
private byte[] getunEncryptData(byte[] bytes) throws IOException,
ClassNotFoundException, SecurityException, NoSuchMethodException,
InvocationTargetException, IllegalArgumentException,
IllegalAccessException, InstantiationException,
NoSuchAlgorithmException, InvalidKeySpecException,
NoSuchPaddingException, NoSuchAlgorithmException,
InvalidKeyException, BadPaddingException,
IllegalBlockSizeException, IllegalStateException {
// 生成一个可信任的随机数源
SecureRandom sr = new SecureRandom();
// 从密钥文件中获取原始密钥数据
byte[] rawKeyData = Util.readFile(keyfilepath);
// 创建一个DESKeySpec对象
Class classkeyspec = Class.forName(Util.getValue("keyspec"));
Constructor constructor = classkeyspec
.getConstructor(new Class[] { byte[].class });
KeySpec dks = (KeySpec) constructor
.newInstance(new Object[] { rawKeyData }); //new DESKeySpec(rawKeyData);
// 创建一个密钥工厂，然后用它把DESKeySpec对象转换成Secret Key对象
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(Util
.getAlgorithm());
SecretKey key = keyFactory.generateSecret(dks);
// Cipher对象实际完成解密操作
Cipher cipher = Cipher.getInstance(Util.getAlgorithm());
// 用密钥初始化Cipher对象
cipher.init(Cipher.DECRYPT_MODE, key, sr);
// 获得经过加密的数据
//执行解密操作
bytes = cipher.doFinal(bytes);
// 然后将解密后的数据转化成原来的类文件。
return bytes;
}
public void setKeyFile(String keyfile) {
this.keyfilepath = keyfile;
}
}
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