1、加密数据，返回string类型的数据：public static String encrypt(String data) { //对string进行BASE64Encoder转换 byte[] bt = encryptByKey(data.getBytes(), password); BASE64Encoder base64en = new BASE64Encoder(); String strs = new String(base64en.encode(bt)); return strs; }
2、解密数据，返回string类型的数据：public static String decryptor(String data) throws Exception { //对string进行BASE64Encoder转换 sun.misc.BASE64Decoder base64en = new sun.misc.BASE64Decoder(); byte[] bt = decrypt(base64en.decodeBuffer(data), password); String strs = new String(bt); return strs; }
3、加密:private static byte[] encryptB鲻戟缒男yKey(byte[] datasource, String key) { try{ SecureRandom random = new SecureRandom(); DESKeySpec desKey = new DESKeySpec(key.getBytes()); //创建一个密匙工厂，然后用它把DESKeySpec转换成 SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); SecretKey securekey = keyFactory.generateSecret(desKey); //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, securekey, random); //现在，获取数据并加密 //正式执行加密操作 return cipher.doFinal(datasource); }catch(Throwable e){ e.printStackTrace(); } return null; }
4、解密:private static byte[] decrypt(byte[] src, String key) throws Exception { // DES算法要求有一个可信任的随机数源 SecureRandom random = new SecureRandom(); // 创建一个DESKeySpec对象 DESKeySpec desKey = new DESKeySpec(key.getBytes()); // 创建一个密匙工厂 SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); // 将DESKeySpec对象转换成SecretKey对象 SecretKey securekey = keyFactory.generateSecret(desKey); // Cipher对象实际完成解密操作 Cipher cipher = Cipher.getInstance("DES"); // 用密匙初始化Cipher对象 cipher.init(Cipher.DECRYPT_MODE, securekey, random); // 真正开始解密操作 return cipher.doFinal(src); }
5、测试：private static String password = "9588888888880288"; //测试 public static void main(String args[]) { //待加密内容 String str = "12"; String result = DESUtil.encrypt(str); BASE64Encoder base64en = new BASE64Encoder();// String strs = new String(base64en.encode(result)); System.out.println("加密后："+result); //直接将如上内容解密 try { String decryResult = DESUtil.decryptor(result); System.out.println("解密后："+new String(decryResult)); } catch (Exception e1) { e1.printStackTrace(); } }
6、显示结果:
