Abstract Telecare Medical Information System (TMIS) makes an efficient and convenient
connection between patient (s)/user (s) at home and doctor (s) at a clinical center. To ensure …

Very recently, Kumari et al. proposed a symmetric key and smart card‐based remote user
password authentication scheme to enhance Chung et al.'s scheme. They claimed their …

Biometrics authenticated schemes using smart cards have attracted much attention in multi-
server environments. Several schemes of this type where proposed in the past. However …

Recently, Chuang et al. proposed a multi-server authenticated key agreement scheme
based on trust computing using smart cards and biometrics. They claimed that their scheme …

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

In multi-server environments, user authentication is a very important issue because it
provides the authorization that enables users to access their data and services; furthermore …

The telecare medicine information system (TMIS) helps the patients to gain the health
monitoring facility at home and access medical services over the Internet of mobile networks …

In wireless communications, sensitive information is frequently exchanged, requiring remote
authentication. Remote authentication involves the submission of encrypted information …

To protect the resources from unauthorized users, the remote user authentication have
become an essential part in the communication network. Currently, smart card-based remote …

Multi-server authentication schemes are very practical from a user point of view, since they
allow a user to get access to different services on different servers with one single …