Sign in with Apple Client Secret Generation

Introduction

This Script helps you create the client_secret required in the Apple Sign-in Rest APIs.

Installing

In the root of the Repository, run

$ npm install 

Getting Started

1. Update the private key in the PrivateKey.p8 file.
2. As per the apple's document client_secret needs to be converted in the following JWT format

{
    "alg": "ES256",
    "kid": "ABC123DEFG"
}
{
    "iss": "DEF123GHIJ",
    "iat": 1437179036,
    "exp": 1493298100,
    "aud": "https://appleid.apple.com",
    "sub": "com.mytest.app"
}

For Details insights, kindly check "Creating the Client Secret section" of the following Apple document : https://developer.apple.com/documentation/sign_in_with_apple/generate_and_validate_tokens

Set the configuration in the config variable.

var config = {
    'kid' : 'key_id'
    'iss' : 'team_id',
    'iat' : Time.now.to_i,
    'exp' : Time.now.to_i + 86400*180,
    'aud' : 'https://appleid.apple.com',
    'sub' : 'client_id',
}

3. Run the npm start command to execute the script.