CryptoJs WordArray恢復字符串

在日常測試的時候，發現系統前端打包數據給后端是加密、后端傳輸回來的也是加密，看來前端做了加解密，跟蹤函數如下：

 

 

 例如AES CBC加密，iv為偏移量，查看數據類型：

 

 

 搜了下，沒有特點的說法，CryptoJS寫的，本身特定的wordArray數據類型，查看源碼：

部分代碼如下：

        /**
         * 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轉到16進制，16進制轉字符串

 

參考：

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