python from jws import JWS jws = JWS(payload) jwt_token = jws.sign(key=secret_key, alg=algorithm) jws = JWS() jws.verify_compact(jwt_token, secret_key) payload_data = jws.payload if jws.token_header['alg'] != algorithm: print("Invalid algorithm") if jws.is_expired(): print("Expired token")