Verify-apple-id-token NPM

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-id-token

Usage

Typescript

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

const jwtClaims = await verifyAppleToken({
  idToken: "yourIdToken",
  clientId: "yourAppleClientId", // or ["app1ClientId", "app2ClientId"]
  nonce: "nonce", // optional
});

jwtClaims.email; // get email of the user

Javascript

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

const jwtClaims = await verifyAppleToken({
  idToken: "yourIdToken",
  clientId: "yourAppleClientId",  // or ["app1ClientId", "app2ClientId"]
  nonce: "nonce", // optional
});