wx-ding-aes/dist/wx.js

Wechat open platform, Enterprise wechat and DingTalk AES decode library.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const aes_1 = require("./aes");
const utils_1 = require("./utils");
/**
 * @description 加密方法
 * @author beary
 * @param text 需要加密的文本
 * @param encodingAESKey AES 秘钥
 * @param key 放在加密内容的尾部作为校验的字符串，如果不是开发企业微信或者钉钉，则不是必须的
 */
exports.encode = (text, encodingAESKey, key) => {
    const textBuffer = Buffer.from(text);
    const datas = [
        Buffer.from(utils_1.randomStr(16)),
        Buffer.from(textBuffer.length.toString(16).padStart(8, '0'), 'hex'),
        textBuffer
    ];
    if (key)
        datas.push(Buffer.from(key));
    return aes_1.encrypt(Buffer.concat(datas), encodingAESKey);
};
/**
 * @description 解密方法
 * @author beary
 * @param text 需要解密的密文，必须是 base64 编码的
 * @param encodingAESKey AES 密钥
 */
exports.decode = (text, encodingAESKey, key) => {
    const decryptContent = aes_1.decrypt(text, encodingAESKey);
    return decryptContent
        .slice(20, 20 + decryptContent.readUInt32BE(16))
        .toString();
};