An authentication protocol is a type of computer communications protocol or cryptographic protocol specifically designed for transfer of authentication data between two entities. It allows the receiving entity to authenticate the connecting entity (e.g. Client connecting to a Server) as well as authenticate itself to the connecting entity (Server to a client) by declaring the type of information needed for authentication as well as syntax.[1] It is the most important layer of protection needed for secure communication within computer networks.
- ^ Duncan, Richard (23 October 2001). "An Overview of Different Authentication Methods and Protocols". www.sans.org. SANS Institute. Retrieved 31 October 2015.