server-setup-jwt.adoc

Server Setup (jwt.js)

In the root directory, copy and paste the server setup code into the jwt.js file.

const express = require('express'); // Sets up the web server.
const jwt = require('jsonwebtoken'); // Generates and signs JWTs.
const cors = require('cors'); // Allows cross-origin requests.
const path = require('path'); // Handles file paths.

const app = express();
app.use(cors());

// Your private key (Replace this with your actual key)
const privateKey = `
-----BEGIN PRIVATE KEY-----
{Your private PKCS8 key goes here}
-----END PRIVATE KEY-----
`;

app.use(express.static(path.join(__dirname, 'public')));

// JWT token generation endpoint
app.post('/jwt', (req, res) => {
    const payload = {
        aud: 'no-api-key', // Replace with your actual API key
        iat: Math.floor(Date.now() / 1000), // Issue timestamp
        exp: Math.floor(Date.now() / 1000) + (60 * 10) // Expiration time (10 minutes)
    };

    try {
        // Tokens are signed with the RS256 algorithm using your private key
        const token = jwt.sign(payload, privateKey, { algorithm: 'RS256' });
        res.json({ token });
    } catch (error) {
        res.status(500).send('Failed to generate JWT token.');
        console.error(error.message);
    }
});

const PORT = 3000;
app.listen(PORT, () => {
    console.log(`Server running at http://localhost:${PORT}`);
});