一段AES的簡化java代碼：

/**
         * 對數(shù)據(jù)用AES算法加密
         * @param plainText  要加密的字節(jié)數(shù)組
         * @param key  密鑰
         * @return 加密后的字節(jié)數(shù)組
         */
        private static byte [] encrypt(byte [] plainText, byte [] key) {
            try{
            SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
            byte[] decryptText = cipher.doFinal(plainText);
            return decryptText;
             } catch(Exception e) {
                 e.printStackTrace();
                 return null;
             }
        }

 

/**
         * 對AES算法加密的數(shù)據(jù)解密
         * @param cipherText  要解密的字節(jié)數(shù)組
         * @param key  密鑰
         * @return 解密后的字節(jié)數(shù)組
         */
         private static byte [] decrypt(byte [] cipherText, byte [] key) {
            try{
                SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
                Cipher cipher = Cipher.getInstance("AES");
                cipher.init(Cipher.DECRYPT_MODE, skeySpec);
                byte[] plainText = cipher.doFinal(cipherText);
                return plainText;
             } catch(Exception e) {
                 e.printStackTrace();
                 return null;
             }
         }