How do I validate JWT tokens?

How do I validate JWT tokens in my application?

To validate JWT tokens, you need to check the signature, expiration, and claims. Do you have a specific library in mind?

I'm using Node.js. What library should I use?

You can use the 'jsonwebtoken' library in Node.js. It provides methods to verify and decode JWTs easily.

Can you show me a code example for validating a token?

Sure! Here's a simple example:

const jwt = require('jsonwebtoken');

const token = 'your_jwt_token';
const secret = 'your_secret_key';

jwt.verify(token, secret, (err, decoded) => {
  if (err) {
    console.log('Token is invalid:', err);
  } else {
    console.log('Decoded token:', decoded);
  }
});