vue项目中使用crypto-js加密

https://blog.csdn.net/ddx2019/article/details/102964182

https://www.cnblogs.com/chaoyuehedy/p/9947381.html

以上两种方法我用得时候报错：Uncaught Error: Malformed UTF-8 data     at Object.stringify (crypto-js.js:478)     at WordArray.init.toString (crypto-js.js:215)  ，没找到解决方法，就自己进行了封装。。

以下是自己得封装方法。

1. 安装：

npm install crypto-js 或者yarn add crypto-js

2. 引入crypto-js，并封装加密解密的方法

secureUtil.js

/**
 * Created by lijingwei on 2018/1/12.
 */
import CryptoJS from 'crypto-js'

// SecureUtil = function () {

var CONTRAST = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
var DICTIONARIES = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890!@#$%^&*()";
var IV_TEXT = "0102030405060708";

/**
 * 字符串转byte[]
 */
export function stringToByte(str) {
    var bytes = new Array();
    var len, c;
    len = str.length;
    for (var i = 0; i < len; i++) {
        c = str.charCodeAt(i);
        if (c >= 0x010000 && c <= 0x10FFFF) {
            bytes.push(((c >> 18) & 0x07) | 0xF0);
            bytes.push(((c >> 12) & 0x3F) | 0x80);
            bytes.push(((c >> 6) & 0x3F) | 0x80);
            bytes.push((c & 0x3F) | 0x80);
        } else if (c >= 0x000800 && c <= 0x00FFFF) {
            bytes.push(((c >> 12) & 0x0F) | 0xE0);
            bytes.push(((c >> 6) & 0x3F) | 0x80);
            bytes.push((c & 0x3F) | 0x80);
        } else if (c >= 0x000080 && c <= 0x0007FF) {
            bytes.push(((c >> 6) & 0x1F) | 0xC0);
            bytes.push((c & 0x3F) | 0x80);
        } else {
            bytes.push(c & 0xFF);
        }
    }
    return bytes;
}

/**
 * byte[]转字符串
 */
function byteToString(arr) {
    if (typeof arr === 'string') {
        return arr;
    }
    var str = '',
        _arr = arr;
    for (var i = 0; i < _arr.length; i++) {
        var one = _arr[i].toString(2),
            v = one.match(/^1+?(?=0)/);
        if (v && one.length == 8) {
            var bytesLength = v[0].length;
            var store = _arr[i].toString(2).slice(7 - bytesLength);
            for (var st = 1; st < bytesLength; st++) {
                store += _arr[st + i].toString(2).slice(2);
            }
            str += String.fromCharCode(parseInt(store, 2));
            i += bytesLength - 1;
        } else {
            str += String.fromCharCode(_arr[i]);
        }
    }
    return str;
}

/**
 * 十六进制字符串转字节数组
 */
function Str2Bytes(str) {
    var pos = 0;
    var len = str.length;
    if (len % 2 != 0) {
        return null;
    }
    len /= 2;
    var hexA = new Array();
    for (var i = 0; i < len; i++) {
        var s = str.substr(pos, 2);
        var v = parseInt(s, 16);
        hexA.push(v);
        pos += 2;
    }
    return hexA;
}

/**
 * 字节数组转十六进制字符串
 */
function Bytes2Str(arr) {
    var str = "";
    for (var i = 0; i < arr.length; i++) {
        var tmp = arr[i].toString(16);
        if (tmp.length == 1) {
            tmp = "0" + tmp;
        }
        str += tmp;
    }
    return str;
}

/**
 * 字符串插入指定位置字符
 */
function insertChar(str, char, pos) {
    var oldstrArray = [str.substring(0, pos), str.substring(pos, str.length)];
//        console.log("拆分后字符串 = %s", oldstrArray.toString());
    var newstr = oldstrArray[0] + char + oldstrArray[1];
//        console.log("组合后字符串 = %s", newstr);
    return newstr;
}

/**
 * 加密
 */
export function encryption(content) {
    content = content.replace(/,/g, "FENGEFU");
//        console.log("密前文本 = %s", content);
    // 根据DICTIONARIES生成16为动态密钥
    var maxPos = DICTIONARIES.length; // 密钥字典最大长度
    var LEN = 16; // 密钥长度
    var password = ''; // 动态密钥
    var array = new Array(maxPos)
        .fill(0)
        .map((v, i)=>i + 1)
        .sort(()=>0.5 - Math.random())
        .filter((v, i)=>i < LEN); // 生成16个不同随机数,作为字典抽取角标
    for (var i = 0; i < array.length; i++) {
        password += DICTIONARIES.charAt(array[i] - 1);
    }
    // console.log("原始动态密钥 = %s", password);
    // AES加密内容
    var key = CryptoJS.enc.Utf8.parse(password);
    var iv = CryptoJS.enc.Utf8.parse(IV_TEXT)
    var encryptResult = CryptoJS.AES.encrypt(content, key, {
        iv: iv,
        mode: CryptoJS.mode.CBC,
        padding: CryptoJS.pad.Pkcs7
    });
    // 转BASE64,增加加密强度
    var encryptedStr = encryptResult.ciphertext.toString();
    // // encryptedStr = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Hex.parse(encryptedStr));
    // encryptedStr = Bytes2Str(stringToByte(encryptedStr));
    // console.log(encryptedStr);
    // console.log("原始加密后密文 = %s", encryptedStr);
    // 密钥干扰
    var currentTimeMillis = (new Date()).valueOf().toString(); // 获得当前时间戳
    var currentTimeMillisLength = currentTimeMillis.length;
    if (currentTimeMillisLength < 13) { // 解决特殊机型获取当前时间毫秒位数异常
        var missingCount = 13 - currentTimeMillisLength;
        for (var i = 0; i < missingCount; i++) {
            currentTimeMillis = currentTimeMillis + i;
        }
    } else if (currentTimeMillis.length > 13) {
        currentTimeMillis = currentTimeMillis.substring(0, 13);
    }
//        console.log("当前时间戳 = %s", currentTimeMillis);
//        console.log("当前时间戳长度 = %s", currentTimeMillis.length);
    var h = new Array(); // 实际插入角标集合
    var arrayTime = new Array(16)
        .fill(0)
        .map((v, i)=>i + 1)
        .sort(()=>0.5 - Math.random())
        .filter((v, i)=>i < currentTimeMillis.length); // 生成16个不同随机数,作为字典抽取角标
    for (var i = 0; i < arrayTime.length; i++) {
//            console.log("取16位随机数第 %s 位", arrayTime[i] - 1);
        h[i] = arrayTime[i] - 1;
    }
//        console.log("集合长度 = %s", h.length);
    var indexs = ""; // 插入角标字符串,每位是要插入的角标
    //随机选取要插入干扰字符
    var arrayMix = new Array(13)
        .fill(0)
        .map((v, i)=>i + 1)
        .sort(()=>0.5 - Math.random())
        .filter((v, i)=>i < h.length); // 生成13个不同随机数,作为字典抽取角标
//        console.log("arrayMix集合长度 = %s", arrayMix.length);
    for (var i = 0; i < arrayMix.length; i++) {
        var charAt = currentTimeMillis.charAt(arrayMix[i] - 1); //取随机干扰字符
//            console.log("干扰字符 = %s", charAt);
        password = insertChar(password, charAt, h[i]);
//            console.log("已插入干扰字符密钥 = %s", password);
        indexs += CONTRAST.charAt(h[i]); // 将10进制角标映射为16进制标识方式
    }
    // console.log("混淆插入角标索引集合字符串 = %s", indexs);
    // console.log("混淆后的动态密钥 = %s", password);
    //将角标分成两节(0~6)(6~13)
    var qian = indexs.substring(0, 6);
    var hou = indexs.substring(6, 13);
    //将分好的两节分别拼接到角标前后
    password = qian + password + hou;
//        console.log("最终携带混淆角标混淆后的动态密钥 = %s", password);
    var result = password + "," + encryptedStr;
    // console.log("最终加密文本 = %s", result);
    var byteResult = stringToByte(result);
//        console.log("最终字节加密文本 = %s", byteResult);
    var hexResult = Bytes2Str(byteResult).toUpperCase();
    // console.log("最终16进制加密文本 = %s", hexResult);
    // console.log("--------------------------");
    return hexResult;
}

/**
 * 解密
 * @param content
 */
export function decryption(content) {
    var btyeMessage = Str2Bytes(content);
//        console.log("最终16进制转字符串加密文本Byte = %s", btyeMessage);
    var message = byteToString(btyeMessage);
    // console.log("字节转字符串加密文本 = %s", message);
    var resultArray = message.split(",");
//        console.log("混淆密钥 = %s", resultArray[0]);
    var realMessage = resultArray[1];
    // console.log("实际密文 = %s", realMessage);
    var qian = resultArray[0].substring(0, 6);
    var hou = resultArray[0].substring(resultArray[0].length - 7, resultArray[0].length);
    var indexs16 = qian + hou;
    var password = resultArray[0].substring(6, resultArray[0].length - 7)
    // console.log("干扰字符角标 = %s", indexs16);
    // console.log("干扰后密钥 = %s", password);
    var indexArray = indexs16.split("");
//        console.log("角标数量 = %s", indexArray);
    for (var i = indexArray.length - 1; i >= 0; i--) {
        var pos = parseInt(indexArray[i], 16); // 16进制字符转10进制字符
//            console.log("干扰字符角标 = %s", pos);
        password = password.substring(0, pos) + password.substring(pos + 1);
//            console.log("删除干扰字符后 = %s", password);
    }
    // console.log("实际密钥 = %s", password);
    // AES解密内容
    var key = CryptoJS.enc.Utf8.parse(password);
    var iv = CryptoJS.enc.Utf8.parse(IV_TEXT)
    // realMessage = CryptoJS.enc.Hex.parse(realMessage).toString();
    var encryptedHexStr = CryptoJS.enc.Hex.parse(realMessage);
    var encryptedBase64Str2 = CryptoJS.enc.Base64.stringify(encryptedHexStr);
    var decryptedData = CryptoJS.AES.decrypt(encryptedBase64Str2, key, {
        iv: iv,
        mode: CryptoJS.mode.CBC,
        padding: CryptoJS.pad.Pkcs7
    });
    var decryptedStr = decryptedData.toString(CryptoJS.enc.Utf8);
    decryptedStr = decryptedStr.replace(/FENGEFU/g, ",");
    // console.log("最终文本 = %s", decryptedStr);
    return decryptedStr;
}
// };

export default {
    encryption,
    decryption
}

utils.js

/**
 * 工具类
 */
import secureUtils from './secureUtil'

//加密解密
export function demoRequest(data) {
  var encryptMessage = secureUtils.encryption(data);
  return encryptMessage;
}

export function demoResponse(data) {
  var decryptMessage = secureUtils.decryption(data);
  return decryptMessage;
}
export default {
  demoRequest,
  demoResponse
}

3. 在入口文件main.js中使用

import Utils from './utils/utils'
Vue.prototype.$Utils = Utils

在组件中使用

加密：

this.$Utils.demoRequest(JSON.stringify(data))

要加密得数据必须先转为字符串

解密：

data = JSON.parse(this.$Utils.demoResponse(res.data))

解密完转换为JSON对象