在日常测试的时候，发现系统前端打包数据给后端是加密、后端传输回来的也是加密，看来前端做了加解密，跟踪函数如下：

 例如AES CBC加密，iv为偏移量，查看数据类型：

 搜了下，没有特点的说法，CryptoJS写的，本身特定的wordArray数据类型，查看源码：

部分代码如下：

        /**
         * Hex encoding strategy.
         */
        var Hex = C_enc.Hex = {
                /**
                 * Converts a word array to a hex string.
                 *
                 * @param {WordArray} wordArray The word array.
                 *
                 * @return {string} The hex string.
                 *
                 * @static
                 *
                 * @example
                 *
                 *     var hexString = CryptoJS.enc.Hex.stringify(wordArray);
                 */
                stringify: function (wordArray) {
                    // Shortcuts
                    var words = wordArray.words;
                    var sigBytes = wordArray.sigBytes;

                    // Convert
                    var hexChars = [];
                    for (var i = 0; i < sigBytes; i++) {
                        var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
                        hexChars.push((bite >>> 4).toString(16));
                        hexChars.push((bite & 0x0f).toString(16));
                    }

                    return hexChars.join('');
                },

可以wordArray转到16进制，16进制转字符串

参考：

https://my.oschina.net/u/3549294/blog/1862451

https://segmentfault.com/p/1210000017534439/read

https://searchcode.com/codesearch/view/96336148/

http://tool.chacuo.net/cryptaes

https://blog.csdn.net/qq_31281245/article/details/112462715