Verify Apple idToken

• Small utility which verifies the Apple idToken
• You can use it on the backend side
• Token verification is part of Apple sign-in process
• The flow is
  • Client app (iOS or Android) will redirect user to the OAuth2 login screen
  • User will login
  • App will receive the tokens
  • App should send the idToken to the backend which will verify it
• Verification steps implemented:
  • Verify the JWS E256 signature using the server’s public key
  • Verify the nonce for the authentication
  • Verify that the iss field contains https://appleid.apple.com
  • Verify that the aud field is the developer’s client_id
  • Verify that the time is earlier than the exp value of the token

Installation

npm install verify-apple-token

Usage

Typescript

import verifyAppleToken from 'verify-apple-id-token';

const jwtClaims = await verifyAppleToken({
    idToken: 'yourIdToken',
    clientId: 'yourAppleClientId',
    nonce: 'nonce', // optional
});

Javascript

const verifyAppleToken = require('verify-apple-id-token').default;

const jwtClaims = await verifyAppleToken({
    idToken: 'yourIdToken',
    clientId: 'yourAppleClientId',
    nonce: 'nonce', // optional
});