uniapp-mqtt-onenet/common/token.ts

// 建议在项目中安装 crypto-js: npm install crypto-js
// 如果是纯 UTS 环境且不依赖插件，可以使用内置的 crypto 接口（视具体平台而定）
// import { hmac } from '@/uni_modules/uni-crypto'; // 假设使用 uni-crypto 插件
// 或者使用通用的 CryptoJS 逻辑
import CryptoJS from 'crypto-js';

export class Token {

  /**
   * 组装 Token
   */
  static assembleToken(version: string, resourceName: string, expirationTime: string, signatureMethod: string, accessKey: string): string {
    const res = encodeURIComponent(resourceName);
    const signature = this.generatorSignature(version, resourceName, expirationTime, accessKey, signatureMethod);
    const sig = encodeURIComponent(signature);

    return `version=${version}&res=${res}&et=${expirationTime}&method=${signatureMethod}&sign=${sig}`;
  }

  /**
   * 生成签名
   */
  static generatorSignature(version: string, resourceName: string, expirationTime: string, accessKey: string, signatureMethod: string): string {
    // 构造待加密文本：et + "\n" + method + "\n" + res + "\n" + version
    const encryptText = `${expirationTime}\n${signatureMethod}\n${resourceName}\n${version}`;
    
    // 调用 HMAC 加密并转为 Base64
    return this.hmacEncrypt(encryptText, accessKey, signatureMethod);
  }

  /**
   * HMAC 加密实现 (基于 CryptoJS 示例)
   */
  static hmacEncrypt(data: string, key: string, signatureMethod: string): string {
    // 1. 处理 Key: Java 中使用了 Base64.getDecoder().decode(key)
    const keyWords = CryptoJS.enc.Base64.parse(key);
    
    // 2. 选择算法 (sha1, md5, sha256)
    let hash: any;
    const method = signatureMethod.toLowerCase();
    
    if (method === 'sha1') {
      hash = CryptoJS.HmacSHA1(data, keyWords);
    } else if (method === 'sha256') {
      hash = CryptoJS.HmacSHA256(data, keyWords);
    } else if (method === 'md5') {
      hash = CryptoJS.HmacMD5(data, keyWords);
    } else {
      throw new Error("Unsupported signature method: " + signatureMethod);
    }

    // 3. 返回 Base64 字符串
    return CryptoJS.enc.Base64.stringify(hash);
  }
}

/**
 * 测试运行
 */
export function testToken() {
  const version = "2018-10-31";
  const resourceName = "products/123123";
  // 过期时间：当前时间戳（秒）+ 100天
  const expirationTime = (Math.floor(Date.now() / 1000) + 100 * 24 * 60 * 60).toString();
  const signatureMethod = "sha1";
  const accessKey = "KuF3NT/jUBJ62LNBB/A8XZA9CqS3Cu79B/ABmfA1UCw=";

  const token = Token.assembleToken(version, resourceName, expirationTime, signatureMethod, accessKey);
  console.log("Authorization: " + token);
}

/**
 * 获取token
 * 参数：
 *    res string 资源信息
 *    method string 加密方式
 *    key stirng 产品秘钥
 *    version string 协议版本号
 * 返回：
 *    return string 实际的token
 */
export function getToken(res:string, method:string, key:string, version:string = "2018-10-31", ) {
  const resourceName = res;
  // 过期时间：当前时间戳（秒）+ 100天
  const expirationTime = (Math.floor(Date.now() / 1000) + 100 * 24 * 60 * 60).toString();
  const signatureMethod = method;
  const accessKey = key;

  const token = Token.assembleToken(version, resourceName, expirationTime, signatureMethod, accessKey);
  return token;
}