Remote user authentication is a mechanism, in which the remote server verifies the
legitimacy of a user over an insecure communication channel. Until now, there have been …

Most of the password based authentication protocols rely on single authentication server for
the user's authentication. User's verification information stored on the single server is a main …

Password is the most commonly used technique for user authentication due to its simplicity
and convenience. The main advantage of passwords is that users can memorize them easily …

While the 6G/IoT transition is on the cards, the real advantage of this transition can be
realized only if the user privacy and security are guaranteed. The smartcard and password …

In distributed systems, user authentication schemes based on password and smart card are
widely used to ensure only authorized access to the protected services. Recently, Chang et …

Remote user authentication without compromising user anonymity is an emerging area in
the last few years. In this paper, we propose a new anonymity preserving mobile user …

The rapid increase in user base and technological penetration has enabled the use of a
wide range of devices and applications. The services are rendered to these devices from …

In order to protect users' identity privacy, Chen et al. proposed an efficient dynamic ID-based
authentication scheme for telecare medical information systems. However, Chen et al.'s …

Abstract In 2014, Kumari, Khan and Li proposed smart card based secure and robust remote
user authentication scheme with key agreement and claimed that their scheme is suitable …

When it comes to key agreement protocol, mutual authentication is regarded as a crucial
security requirement. Yet, conventional authenticated key agreement using static ID cannot …