Signature-based Handling of Asserted information using toKENs (SHAKEN) is an industry framework for managing
and deploying Secure Telephone Identity (STI) technologies with the purpose of providing end-to-end cryptographic
authentication and verification of the telephone identity and other information in an IP-based service provider voice
network. This specification expands the SHAKEN framework, introducing mechanisms for authentication,
verification, and transport of calling name and other enhanced caller identity information (e.g., images, logos) and
call reason, and describing how they are handled in various call origination and termination scenarios.