olemus
infovahetus olemi identiteedi kontrollimiseks
ISO 7498, ISO/IEC 2382:
mehhanism olemi identiteedi tõendmiseks infovahetuse abil
= a mechanism intended to ensure the identity of an entity by means of information exchange
ISO/IEC 10181:
üks või mitu edastust autentimisteabe vahetamiseks
autentimise sooritamise eesmärgil
= a sequence of one or more transfers of exchange authentication information (AI) for the purposes of performing an authentication

näiteid
https://www.codeproject.com/KB/IP/326574/2WaySSL.png
https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Ftse1.mm.bing.net%2Fth%3Fid%3DOIP.EcJcDS0_1dyV727HqhaB9QHaC1%26pid%3DApi&f=1

vt ka
- autentimissuhtluse teave