前端对称加密方案

import CryptoJS from ‘crypto-js’;
import Utf8 from ‘crypto-js/enc-utf8’;
import ECB from ‘crypto-js/mode-ecb’;
import Pkcs7 from ‘crypto-js/pad-pkcs7’;

/**
* AES 加密
*
* @author ShiPengCheng
* @date 2020-07-23
* @param {*} word
* @param {*} keyStr
*/
export const encrypt = (word, keyStr) => {
// 每次获取之前都会检查是否存在于当前的key集合中(此处是定义了全局的参数 不参与打包)
const encryption_Key = window.service.encryptionkeys;
// 可设置为随机获取key 防止出现规律获取
// 暂时去调随时获取key const keyIndex = Math.floor((Math.random() * encryption_Key.length));
if (encryption_Key.length == 0) {
return ‘请设置加密key’;
}
keyStr = keyStr ? keyStr : encryption_Key[encryption_Key.length – 1];
const key = Utf8.parse(keyStr);
const srcs = Utf8.parse(word);
const encrypted = CryptoJS.AES.encrypt(srcs, key, {
mode: ECB,
padding: Pkcs7
});
return encrypted.toString();
};

/**
* AES 解密
*
* @author ShiPengCheng
* @date 2020-07-23
* @param {*} word
*/
export const decrypt = word => {
// 每次获取之前都会检查是否存在于当前的key集合中
const encryption_Key = window.service.encryptionkeys;
let decrtptWords = ”;
encryption_Key.map(item => {
if (getDecrtptWords(word, item)) {
decrtptWords = getDecrtptWords(word, item);
}
});
return decrtptWords;
};

/**
* AES解密字符处理
*
* @author ShiPengCheng
* @date 2020-07-24
* @param {*} word
* @param {*} itemkey
*/
const getDecrtptWords = (word, itemkey) => {
try {
const key = Utf8.parse(itemkey);
const decryptText = CryptoJS.AES.decrypt(word, key, {
mode: ECB,
padding: Pkcs7
});
if (Utf8.stringify(decryptText).toString()) {
return Utf8.stringify(decryptText).toString();
}
} catch (error) {}
};