AES加解密算法怎么实现

这篇文章主要介绍"AES加解密算法怎么实现"，在日常操作中，相信很多人在AES加解密算法怎么实现问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"AES加解密算法怎么实现"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

 /**     * base64 encode     * @param bytes 待编码的byte[]     * @return 编码后的base64 code     */    public static String base64Encode(byte[] bytes){        return Base64.encodeBase64String(bytes);    }    /**     * base64 decode     * @param base64Code 待解码的base64 code     * @return 解码后的byte[]     * @throws Exception     */    public static byte[] base64Decode(String base64Code) throws Exception{        return StringUtils.isEmpty(base64Code) ? null : Base64.decodeBase64(base64Code);    }    public static byte[] aesEncryptToBytes(String content, byte[] encryptKey) throws Exception {        KeyGenerator kgen = KeyGenerator.getInstance("AES");        kgenInit(kgen, encryptKey);        Cipher cipher = Cipher.getInstance("AES");        cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES"));        return cipher.doFinal(content.getBytes("utf-8"));    }    /**     * AES加密为base64 code     * @param content 待加密的内容     * @param encryptKey 加密密钥     * @return 加密后的base64 code     * @throws Exception     */    public static String aesEncrypt(String content, String encryptKey) throws Exception {        return base64Encode(aesEncryptToBytes(content, getAESKey(encryptKey)));    }    public static String aesDecryptByBytes(byte[] encryptBytes, byte[] decryptKey) throws Exception {        KeyGenerator kgen = KeyGenerator.getInstance("AES");        kgenInit(kgen, decryptKey);        Cipher cipher = Cipher.getInstance("AES");        cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES"));        byte[] decryptBytes = cipher.doFinal(encryptBytes);        return new String(decryptBytes,"utf-8");    }    /**     * 将base64 code AES解密     * @param encryptStr 待解密的base64 code     * @param decryptKey 解密密钥     * @return 解密后的string     * @throws Exception     */    public static String aesDecrypt(String encryptStr, String decryptKey) throws Exception {        return StringUtils.isEmpty(encryptStr)                ? null : aesDecryptByBytes(base64Decode(encryptStr), getAESKey(decryptKey));    }    public static byte[] getAESKey(String encodingAESKey){        byte[] array = Base64.decodeBase64(encodingAESKey+"=");        return array;    }    /**     **防止在linux下随机生成key     * @param kgen     * @param bytes     * @throws NoSuchAlgorithmException     */    public static void kgenInit(KeyGenerator kgen, byte[] bytes)            throws NoSuchAlgorithmException {        //1.防止linux下 随机生成key        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" );        secureRandom.setSeed(bytes);        //2.根据密钥初始化密钥生成器        kgen.init(128, secureRandom);    }    public static void main(String[] args) throws Exception {        /** 测试线secret_key */        String encoding_aes_key="88assadsfsdfsffsf6dsfsdfd";                /** 参数加密 */        String encrypt = aesEncrypt(content, encoding_aes_key);        System.out.println("加密后:" + encrypt);        /** 参数解密 */        String decrypt = aesDecrypt(encrypt, encoding_aes_key);        System.out.println("解密后:" + decrypt);    }

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