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

``bash
npm install verify-apple-id-token
`

Usage

$3

`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
`

$3

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

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

Contribution

Thank you for your interest in contributing to verify-apple-id-token`! Please see the CONTRIBUTING.md to learn how to do it!

License

MIT