This project is a Node.js library for implementing and managing JSON Web Tokens. It functions as a cryptographic token manager and authentication tool used to sign, verify, and decode tokens to securely transmit claims between parties. The library supports both symmetric and asymmetric signing algorithms, including HMAC and RSA. It enables the creation of digitally signed tokens using secrets or private keys, and provides mechanisms to validate token signatures and verify embedded claims such as expiration and issuer. The tool covers a range of identity and access capabilities, including sta