@Test
public void test() throws Exception {
String data = "lala";
String key = "helloworld";
String result = SystemUtil.encryptDES(data, key);
Assert.assertEquals(SystemUtil.decryptDES(result, key), data);
System.out.println(result);
}
/**
* DES
* 加密
* @param data
* @param key
* @return
* @throws Exception
*/
public static byte[] encryptDES(byte[] data, byte[] key) throws Exception {
SecureRandom sr = new SecureRandom();
DESKeySpec dks = new DESKeySpec(key);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(SystemUtil.KEY_ALGORITHM_DES);
SecretKey securekey = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance(SystemUtil.KEY_ALGORITHM_DES);
cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);
return cipher.doFinal(data);
}
/**
* DES
*解密
* @param data
* @param key
* @return
* @throws Exception
*/
public static byte[] decryptDES(byte[] data, byte[] key) throws Exception {
SecureRandom sr = new SecureRandom();
DESKeySpec dks = new DESKeySpec(key);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(SystemUtil.KEY_ALGORITHM_DES);
SecretKey securekey = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance(SystemUtil.KEY_ALGORITHM_DES);
cipher.init(Cipher.DECRYPT_MODE, securekey, sr);
return cipher.doFinal(data);
}