import javax.crypto.*; import javax.crypto.spec.DESKeySpec; import java.io.*; import java.security.InvalidKeyException; import java.security.Key; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom; import java.util.List; import java.util.Map; /**  * Created by Administrator on 2017/9/28 0028.  * key.obj文件作为加密的秘钥  * file 为要加密的文件  */ public class MyDESPlus {
      public static int MODE_EXPRESSLY = 0;     public static int MODE_GAEBLED = 1;     public int c = 0;     private Cipher enCipher = null;     public MyDESPlus() throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IOException {
          this.enCipher = Cipher.getInstance("DES");         this.enCipher.init(1, intiPriveKey("key.obj"));     }     /**      * ip.properties 文件加密处理      * key.obj文件作为加密的秘钥      * file 为要加密的文件      */     public static void jiami(File keyObj,File file) throws Exception {
          // DES算法要求有一个可信任的随机数源         SecureRandom sr = new SecureRandom();         // 获得密匙数据      //   FileInputStream fi = new FileInputStream(new File("key.obj"));         FileInputStream fi = new FileInputStream(keyObj);         byte rawKeyData[] = new byte[fi.available()];         fi.read(rawKeyData);         fi.close();         // 从原始密匙数据创建DESKeySpec对象         DESKeySpec dks = new DESKeySpec(rawKeyData);         // 创建一个密匙工厂，然后用它把DESKeySpec转换成一个SecretKey对象         SecretKey key = SecretKeyFactory.getInstance("DES").generateSecret(dks);         // Cipher对象实际完成加密操作         Cipher cipher = Cipher.getInstance("DES");         // 用密匙初始化Cipher对象         cipher.init(Cipher.ENCRYPT_MODE, key, sr);         // 现在，获取要加密的文件数据         ByteArrayOutputStream baos = new ByteArrayOutputStream();  //12         FileInputStream fi2 = new FileInputStream(file);         byte data[] = new byte[fi2.available()];         fi2.read(data);         // 正式执行加密操作         byte encryptedData[] = cipher.doFinal(data);         baos.write(encryptedData);         fi2.close();         if(file.delete()){
              // 用加密后的数据覆盖原文件             file.createNewFile();             String filename = file.getName();             FileOutputStream fos = new FileOutputStream(file);             fos.write(byteArr2HexStr(baos.toByteArray()).getBytes()); //12             fos.flush();             fos.close();         }     }     public static String byteArr2HexStr(byte[] buff) {
          @SuppressWarnings("StringBufferMayBeStringBuilder")         StringBuffer sb = new StringBuffer(buff.length * 2);         for (int i = 0; i < buff.length; i++) {
              int b = buff[i];             while (b < 0) {
                  b += 256;             }             if (b < 16) sb.append("0");             sb.append(Integer.toHexString(b));         }         return sb.toString();     }     private byte[] hexStr2BtyeArr(String str) {
          byte[] buff = new byte[str.length() / 2];         byte[] b = str.getBytes();         for (int i = 0; i < str.length(); i += 2) {
              String temp = new String(b, i, 2);             buff[(i / 2)] = ((byte)Integer.parseInt(temp, 16));         }         return buff;     }     private Key intiPriveKey(String key) throws IOException, NoSuchAlgorithmException     {
          File keyF = new File(key);         if (keyF.exists()) keyF.delete();         keyF.createNewFile();         FileOutputStream fos = new FileOutputStream(keyF);         KeyGenerator keyG = KeyGenerator.getInstance("DES");         keyG.init(56);         Key k = keyG.generateKey();         ObjectOutputStream oos = new ObjectOutputStream(fos);         oos.writeObject(k);         oos.close();         return k;     }     //把类文件加密后存到decript.cipher文件     public void encrypt(File classFile) throws IllegalBlockSizeException, BadPaddingException, IOException {
          if ((classFile == null) || (!classFile.exists())) return;         if (!classFile.getName().endsWith(".class")) return;         byte[] enByte = this.enCipher.doFinal(getBytes2ClassFile(classFile));         FileOutputStream fos = new FileOutputStream(getClass2Cipher(classFile.getAbsolutePath()));         fos.write(enByte);         fos.close();         classFile.delete();     }     private byte[] getBytes2ClassFile(File file) throws IOException {
          long len = file.length();         byte[] data = new byte[(int)len];         FileInputStream fin = new FileInputStream(file);         int r = fin.read(data);         if (r != len)             throw new IOException("Only read " + r + " of " + len + " for " + file);         fin.close();         return data;     }     private String getClass2Cipher(String fileName) {
          if (fileName.endsWith(".class")) {
              return fileName.substring(0, fileName.indexOf(".class")) + ".cipher";         }         return null;     }     @SuppressWarnings("CallToPrintStackTrace")     public void encryptWEB(String domain, List
    
      ips, Map maps, String targetDir){
          try {
              encrypt(new File(targetDir + "/WEB-INF/classes/org/springframework/decript/Decript.class"));            /* jiami(new File(targetDir+"/WEB-INF/classes/db.properties")); //对数据库文件加密             jiami(new File(targetDir+"/WEB-INF/classes/service.xml")); //对配置文件 加密             jiami(new File(targetDir+"/WEB-INF/classes/config/select.data"));*/             maps.put("domain", domain);             maps.put("ips", ips);             Data da = new Data();             da.setMap(maps);             da.setCDKEY(MD5.MD5Encode(domain));             obj2File(da, "data.obj");         } catch (Exception e) {
              e.printStackTrace();         }     }     @SuppressWarnings("ConvertToTryWithResources")     public  Object obj2File(Object obj, String filepath) throws IOException {
          File file = new File(filepath);         if (!file.exists()) file.createNewFile();         FileOutputStream fos = new FileOutputStream(file);         ObjectOutputStream oos = new ObjectOutputStream(fos);         oos.writeObject(obj);         fos.close();         oos.close();         return obj;     } ｝