This repository was archived by the owner on Nov 20, 2025. It is now read-only.
This repository was archived by the owner on Nov 20, 2025. It is now read-only.
Invalid token signature #987
Description
Error: Invalid token signature: token_here
at OAuth2Client.verifySignedJwtWithCertsAsync (E:\Node\node_modules\google-auth-library\build\src\auth\oauth2client.js:562:19)
at processTicksAndRejections (internal/process/task_queues.js:94:5)
at async OAuth2Client.verifyIdTokenAsync (E:\Node\node_modules\google-auth-library\build\src\auth\oauth2client.js:392:23)
at async verify (E:\Node\app.js:6:20)
const verified = await crypto.verify(cert, signed, signature);
if (!verified) {
throw new Error('Invalid token signature: ' + jwt);
}getting the error on these lines.
The token is obtained using googleAuthentication on flutter.
Here is the code snippet of Node
const {OAuth2Client} = require('google-auth-library');
const client = new OAuth2Client(CLIENT_ID);
async function verify() {
const ticket = await client.verifyIdToken({
idToken: token,
audience: CLIENT_ID, // Specify the CLIENT_ID of the app that accesses the backend
// Or, if multiple clients access the backend:
//[CLIENT_ID_1, CLIENT_ID_2, CLIENT_ID_3]
});
const payload = ticket.getPayload();
const userid = payload['sub'];
console.log(payload);
console.log(userid);
}Token I am getting in Flutter application -
final GoogleSignInAuthentication googleAuth = await currentUser.authentication;
googleAuth.idToken;
googleAuth.accessToken