1

语境

我正在关注谷歌关于启用实时开发者通知的 RTDNs指南。我已成功创建主题和订阅,并已收到发送到我创建的 API 的推送通知。我现在想对这些消息进行身份验证和验证。为此,我正在关注Authentication and Authorization 的本指南。他们的开发者文档在这里这里都有一个看似有用的例子。

问题

遵循上述资源后,我收到以下错误:

Error: No pem found for envelope: {"typ":"JWT","alg":"HS256"}

相关代码

const authClient = new OAuth2Client();
// ... 
app.post('/pubsub/authenticated-push', jsonBodyParser, async (req, res) => {

  // Verify that the push request originates from Cloud Pub/Sub.
  try {
    // Get the Cloud Pub/Sub-generated JWT in the "Authorization" header.
    const bearer = req.header('Authorization');
    const [, token] = bearer.match(/Bearer (.*)/);

    // Verify and decode the JWT.
    // Note: For high volume push requests, it would save some network
    // overhead if you verify the tokens offline by decoding them using
    // Google's Public Cert; caching already seen tokens works best when
    // a large volume of messages have prompted a single push server to
    // handle them, in which case they would all share the same token for
    // a limited time window.

    // verifyIdToken is failing here with the `No pem found for envelope` error
    const ticket = await authClient.verifyIdToken({
      idToken: token,
      audience: 'example.com',
    });

    // ...

  } catch (e) {
    res.status(400).send('Invalid token');
    return;
  }

  res.status(200).send();
});

问题

由此,我假设我需要一些公钥。

  1. 我在哪里得到所说的公钥?
  2. 我在哪里放置所说的公钥,以便用它初始化谷歌客户端?
  3. 如何生成示例 JWT 来测试我的端点?

编辑

我可以在他们的代码中找到这个错误的来源:

    if (!Object.prototype.hasOwnProperty.call(certs, envelope.kid)) {
      // If this is not present, then there's no reason to attempt verification
      throw new Error('No pem found for envelope: ' + JSON.stringify(envelope));
    }

但是,我已经验证了该kid属性确实存在于解码对象中:

{"alg":"RS256","kid":"7d680d8c70d44e947133cbd499ebc1a61c3d5abc","typ":"JWT"}
4

1 回答 1

3

原来kid是无效的,因此抛出了No pem found for envelope错误。一旦kid提供了有效值,错误就不再存在。

于 2021-02-23T17:58:52.450 回答