Sdkkey cannot be empty

Meeting SDK Web
1

When I upgraded zoom web SDK to 2.12.0, started getting error while starting the meeting “SDK key cannot be empty”

Can anyone help?

2

Hi @ajinkya.kulkarni
Thanks for reaching out to us.
Can you please make sure that you are adding your SDK key correctly to your code?

3

Here is how we generate the signature (PHP)-

$time = time() * 1000 - 30000; //time in milliseconds (or close enough)
		$data = base64_encode($api_key . $meeting_number . $time . $role);
		$hash = hash_hmac('sha256', $data, $api_secret, true);
		$_sig = $api_key . "." . $meeting_number . "." . $time . "." . $role . "." . base64_encode($hash);
		//return signature, url safe base64 encoded
		$signature = rtrim(strtr(base64_encode($_sig), '+/', '-_'), '=');```

And here is how we Join the meeting -

$.post(
apachehost + “API/authenticate/generate_signature”,
{
action: “sign”,
meetingNumber: meetingNumber,
role: role, //1 for admin
},
function (data) {
var response_string = JSON.parse(data);
console.log(api_key, userName, response_string);
client.join({
sdkKey: api_key,
signature: response_string.data.signature,
meetingNumber: meetingNumber,
password: meetingPwd,
userName: userName,
}).then(function (response) {
$(“#join_publish_button”).hide();
$(“#save_recording_btn”).show();
loadingSpinnerModal(“loader”, “Connecting … Please wait …”, false);
})
.catch(function (error) {
loadingSpinnerModal(“loader”, “Connecting … Please wait …”, false);
console.log(“ZoomError”, error);
showError(“Some error connecting the live lecture … Please try again”);
});;
}
);

Now it says Signature invalid! Join failed!
4

SDK 2.12.0 does’t support JWT app anymore - you have to migrate to Meeting SDK app with the new types of signatures

https://developers.zoom.us/docs/internal-apps/jwt-app-migration/#jwt-app-type-to-sdk-app-type-migration

important: if you create a new Meeting SDK app

id

1 Like
5

I am calling Zoom APIs and using access token with JWT. Do I have to migrate that as well?

6

you need Server-to-Server Oauth app for API calls

7

here another info - it seems you can use meeting SDK credentials for API calls

8

I am getting Signature expired error when trying to create a signature with Server to Server Auth credentials -
This is the code


$time     = round( ( time() * 1000 - 30000 ) / 1000 );
		$exp     = $time + 86400;

		//$exp = ($time + 21600000); //6 hour expiry

		$time = $time * 1000;
		$exp = $exp * 1000;
$headers = array(
			'alg' => 'HS256', //alg is required. see *Algorithms* section for supported algorithms
			'typ' => 'JWT'
		);
		
		// anything that json serializable
		$payload = array(
			'sdkKey' => $api_key,
			'appKey' => $api_key,
			'mn' => $meeting_number,
			'role' => $role,
			'iat' => $time,
			'exp' => $exp,
			'tokenExp' => $exp
		);
		
		//$key = 'some-secret-for-hmac';
		
		$jws = new \Gamegos\JWS\JWS();
		$signature = $jws->encode($headers, $payload, $api_key);
9

do you have a sample of the created JWT token?

10

you are using millisconds (depr. JWT app) - you have to use seconds (Meeting SDK app)

11

Now this this code, I’m getting Signature is invalid (Using firebase JWT)

$iat = time();
    	$exp = $iat + 60 * 60 * 2;
    	// $token_payload = [
    
        // 'sdkKey' => $api_key,
        // 'mn' => $meeting_number,
        // 'role' => $role,
        // 'iat' => $iat,
        // 'exp' => $exp,
        // 'tokenExp' => $exp
    	// ];

		$token_payload = array(
			'sdkKey' => $api_key,
			'appKey' => $api_key,
			'mn' => $meeting_number,
			'role' => $role,
			'iat' => $iat,
			'exp' => $exp,
			'tokenExp' => $exp
		);

    	$signature = JWT::encode($token_payload, $api_secret, 'HS256');