# pasexto v0.1.2 - Table of Contents > A compliant and complete implementation of PASETO and PASERK. ## Modules - [Pasexto](Pasexto.md): A compliant and complete implementation of [PASETO](https://github.com/paseto-standard/paseto-rfc) and [PASERK](https://github.com/paseto-standard/paserk). - [Pasexto.Key](Pasexto.Key.md): Keys are used to build and parse tokens, which are always scoped to a specific PASETO version and purpose. - [Pasexto.Keyring](Pasexto.Keyring.md): A keyring can be used to store a collection of keys for use in the building and parsing of tokens. - [Pasexto.Paserk](Pasexto.Paserk.md): PASERK is an extension to PASETO that provides key-wrapping and serialization. - [Pasexto.Rules](Pasexto.Rules.md): Default rules that can be used during the building and/or parsing of PASETO tokens. - [Pasexto.Wrap.PIE](Pasexto.Wrap.PIE.md): The PASERK standard wrapping protocol. - [Pasexto.Wrapper](Pasexto.Wrapper.md): PASERK uses symmetric-key encryption to wrap PASETO keys.