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问题：系统登录账号密码密文传输，用AES加密之后；登录的时候抛出：Given final block not properly padded. Such issues can arise if a bad key is used dur。

经过一系列排查，问题孵出了水面；前端加密和后端解密没对应；很尴尬...

前端代码（错误正确比较）：

import CryptoJS from 'crypto-js' //错误import encrypt from 'utils/aes'  //正确// 用户名登录    Username({ commit }, userInfo) {      const account = userInfo.account.trim()      // const accChange = CryptoJS.AES.encrypt(account, 'secret key 123'); //错误      const accChange = encrypt.encrypt(account); //正确      return new Promise((resolve, reject) => {        login(accChange, userInfo.pass).then(response => {          const { data } = response          if (data.resp_code === 0) {            const token = data.datas.authorization            sessionStorage.setItem('authorization',token)            commit('TOKEN', token)            setToken(token)          }          resolve(response)        }).catch(error => {          reject(error)        })      })    },

后端代码（正确）：

private static String SALT="bjbcsddskdkdkkkkdksk";//CBC加密偏移量private static String IVCODE="5e8y6w45ju8w9jq8";/** * 解密 * @param encryptStr 解密的字符串 * @param decryptKey 解密的key值 * @return * @throws Exception */ public static String decrypt(String encryptStr, String decryptKey) throws Exception {    KeyGenerator kgen = KeyGenerator.getInstance("AES");    kgen.init(128);    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");    IvParameterSpec iv = new IvParameterSpec(IVCODE.getBytes());    cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), "AES"), iv);    // 采用base64算法进行转码,避免出现中文乱码    byte[] encryptBytes = Base64.decodeBase64(encryptStr);    byte[] decryptBytes = cipher.doFinal(encryptBytes);    return new String(decryptBytes);}

aes.js文件：

import Vue from 'vue'import CryptoJS from 'crypto-js'//数据解密export default {    decrypt(content) {        var sKey = CryptoJS.enc.Utf8.parse("bjbcsddskdkdkkkkdksk");        var iv = CryptoJS.enc.Utf8.parse("5e8y6w45ju8w9jq8");        // var decrypt = CryptoJS.AES.decrypt(content, sKey, { mode: CryptoJS.mode.ECB,            padding: CryptoJS.pad.Pkcs7 });        var decrypt = CryptoJS.AES.decrypt(content, sKey, {            iv: iv,            mode: CryptoJS.mode.CBC,            padding: CryptoJS.pad.Pkcs7        }        );        var resultStr = CryptoJS.enc.Utf8.stringify(decrypt).toString();        return resultStr;    },    encrypt(content) {        var sKey = CryptoJS.enc.Utf8.parse("bjbcsddskdkdkkkkdksk");        var iv = CryptoJS.enc.Utf8.parse("5e8y6w45ju8w9jq8");        let srcs = CryptoJS.enc.Utf8.parse(content);        let encrypted = CryptoJS.AES.encrypt(srcs, sKey, {            iv,            mode: CryptoJS.mode.CBC,            padding: CryptoJS.pad.Pkcs7        });        return encrypted.toString();    },}

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