How do I validate a JWT?

How do I validate a JWT?

To validate a JWT, you need to check its signature, expiration, and claims. Would you like a code example?

Yes, please provide a code example for validating a JWT in Python.

You can use the pyjwt library. Here's a simple example:

import jwt

# Your secret key
secret = 'your-256-bit-secret'

# The JWT to validate
token = 'your.jwt.token'

try:
    decoded = jwt.decode(token, secret, algorithms=['HS256'])
    print('Valid JWT:', decoded)
except jwt.ExpiredSignatureError:
    print('Token has expired')
except jwt.InvalidTokenError:
    print('Invalid token')

What if I don't have the secret key?

If you don't have the secret key, you cannot validate the JWT's signature. You may need to contact the issuer for it.