[WebSDK 2.9.7] Signature is invalid

Meeting SDK Web
1

Hi there,
I don’t understand why I’m getting “Signature is invalid.”
i already read all topics about this thing, but didn’t find a solution.

I’m using WebSDK 2.9.7
I’m generating signature locally in angular (just for testing) with this code:

   _generateSignature({
    sdkKey,
    sdkSecret,
    meetingNumber,
    role
  }: {
    sdkKey: string;
    sdkSecret: string;
    meetingNumber: string;
    role: number;
  }): string {
    const iat = Math.round(new Date().getTime() / 1000 - 60);
    const exp = iat + 60 * 60 * 2;
    const oHeader = { alg: 'HS256', typ: 'JWT' };

    const oPayload = {
      sdkKey: sdkKey,
      mn: meetingNumber,
      role: role,
      iat: iat,
      exp: exp,
      appKey: sdkKey,
      tokenExp: iat + 60 * 60 * 2
    };

    const sHeader = JSON.stringify(oHeader);
    const sPayload = JSON.stringify(oPayload);
    const signature = KJUR.jws.JWS.sign('HS256', sHeader, sPayload, sdkSecret);
    consoleDev(signature);
    return signature;
  }

And call a component view with this code

await client.init({ zoomAppRoot: meetingSDKElement!, language: 'it-IT' });
    await client.join({
      sdkKey: sdkKey,
      signature: this._generateSignature({
        sdkKey,
        sdkSecret,
        meetingNumber,
        role
      }),
      meetingNumber,
      userName,
      success: (_: any) => {
        console.log('joined');
      },
      error: (error: any) => {
        console.log(error);
      }
    });

checking data using jwt.io looks legitimate to me.

What else can i check?

2

@dedonnodev Hope you will be fine.

Here are the sessions regarding WebSDK Integrations

3

I followed also those videos, but i got always Signature is invalid

4

@dedonnodev NodeJS Signature Sample :point_down:

const KJUR = require('jsrsasign');

function signatureHelper(req, res) {
    const iat = Math.round(new Date().getTime() / 1000) - 30;
    const exp = iat + 60 * 60 * 2


    const Header = {
        alg: 'HS256',
        typ: 'JWT'
    };

    const Payload = {
        sdkKey: 'SDK-KEY',
        mn: req.body.meetingNumber,
        role: req.body.role,
        iat: iat,
        exp: exp
    };

    const sHeader = JSON.stringify(Header);
    const sPayload = JSON.stringify(Payload);

    const meetingSignature = KJUR.KJUR.jws.JWS.sign('HS256', sHeader, sPayload, 'SDK-SECRET');

    return res.json({
        signature: meetingSignature,
        sdkKey: 'SDK-KEY'
    });
}
5

you can check if Meeting SDK key/secret are active and working

the sample app on github is suitable for this

the CDN version is ready to use with a few simple steps

CDN/js/index.js:20 var SDK_KEY = "YOUR_SDK_KEY";
CDN/js/index.js:26 var SDK_SECRET = "YOUR_SDK_SECRET";
CDN/js/index.js:112 ... "/meeting.html?" // replace '/' with './'

CDN/js/meeting.js:31 leaveUrl: "/index.html", // replace '/' with './'
6

@dedonnodev ,

Are you still having issues with this?
Let me know, and I’ll see how I can help to triage this.

7

Hi there, also with “meetingsdk-web-sample” i got “Signature is invalid.”
but i don’t understand how.
With an old version of sdk “2.3.5” it works.

Same keys, same meeting.

8

@dedonnodev ,

previously on 2.3.5, were you using API key? In version 2.7 and above, you will need to use SDK Key instead

https://marketplace.zoom.us/docs/guides/build/jwt-app/jwt-app-migration/#migration-guide-for-meeting-sdk-for-web-using-a-zoom-jwt-app-type

Let me know if you need more details, will be happy to walk you thru this

9

I didn’t know there was that guide.
Now that i converted jwt to sdk everything works.

Thank you

10

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