Multi-Server Authentication and Key Exchange

Multi-server authentication and key exchange is where the multiple servers contribute in the authentication process of clients, and granting the access to authenticated clients. Present protocols used for authentication purpose keeps the authentication information or secrete codes of all clients on a single server, which is very insecure from the prospect of security. In this paper I have proposed a multi-server authentication and key exchange process where client communicate with the main server by means of intermediate servers, intermediate servers are very useful for checking or verifying authenticity of clients. This protocol is simple and secure against present two server password-only authenticated key exchange protocols.