This document specifies entity authentication mechanisms using authenticated encryption algorithms. Four of the mechanisms provide entity authentication between two entities where no trusted third party is involved; two of these are mechanisms to unilaterally authenticate one entity to another, while the other two are mechanisms for mutual authentication of two entities. The remaining mechanisms require an on-line trusted third party for the establishment of a common secret key. They also realize mutual or unilateral entity authentication.
Annex A defines Object Identifiers for the mechanisms specified in this document.

 th edition 2019-06 IT Security techniques — Entity authentication — Part 2: Mechanisms using authenticated encryption Techniques de sécurité IT — Authentification d'entité — Partie 2: Mécanismes utilisant le chiffrement authentifié Reference number ISO/IEC 9798-2:2019(E) ？ ISO/IEC 2019 ISO/IEC 9798-2:2019(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO/IEC 2019