With the aim to use numerous network based services through one time user/client
registration, lots of works have been done. Most of the work uses password based login …

Advancement in communication technology provides a scalable platform for various
services, where a remote user can access the server from anywhere without moving from its …

In a traditional single server authentication scheme, if a user wishes to access network
services from different servers, the user has to register with these servers separately. To …

A multi-server authentication scheme offers a single registration procedure, but allows to
access services from multiple servers. For efficiently communicating with the servers, a …

Remote user authentication and key agreement scheme using smart cards is a very practical
solution to validate the eligibility of a remote user and provide secure communication later …

In a traditional single server authentication scheme, if a user wishes to access network
services from different servers, the user has to register with these servers separately. To …

At the present time, application of online communication systems are rapidly increasing and
most of the clients depend on a set of servers to fulfill their daily needs. In order to access …

Two Factor authentication mechanisms are considered to be secure for authenticating a
user in Internet based environment. As the number of services provided online is day by day …

With the rapid development of computer networks, multi‐server architecture has attracted
much attention in many network environments. Moreover, in order to achieve non …

With the explosive growth of computer networks, many remote service providing servers and
multi-server network architecture are provided and it is extremely inconvenient for users to …