University of Oviedo University of Murcia Ericsson Ericsson University of Murcia The Extensible Authentication Protocol (EAP), defined in RFC 3748, provides a standard mechanism for support of multiple authentication methods. This document specifies the EAP authentication method EAP- EDHOC, based on Ephemeral Diffie-Hellman Over COSE (EDHOC). EDHOC is a lightweight security handshake protocol, enabling authentication and establishment of shared secret keys suitable in constrained settings. This document also provides guidance on authentication and authorization for EAP-EDHOC.