Seamless roaming is highly desirable for wireless communications, and security such as
authentication and privacy preserving of mobile users is challenging. Recently, Wu et al. and …

Recently, Chen et al. proposed a practical authentication protocol for supporting anonymous
roaming in wireless access networks, then the protocol is further improved by Hsieh and …

In global mobile network, it is essential to authenticate mobile users and provide secure
communication between a user, foreign agent and the home agent using session key …

Recently, Chang, Lee, and Chiu proposed an enhanced anonymous authentication scheme
which permits mobile users to anonymously enjoy roaming service in global mobile …

User authentication is an important security mechanism for recognizing legal roaming users.
In 2006, Lee, Hwang, and Liao proposed an enhanced authentication scheme with user …

In real-life applications, ensuring secure transmission of data over public network channels
to prevent malicious eavesdropping of the data is an important issue. Several potential …

In wireless network, a secure roaming authentication protocol enables a mobile user to get
services from a foreign server when he/she is outside of the home server. However, the …

Recently, user authentication schemes for mobile devices have become increasingly critical.
Because of wide use, numerous services for mobile devices are provided, and will continue …

Seamless roaming over wireless networks is highly desirable to mobile users, and security
such as authentication of mobile users is challenging. In this paper, we propose a privacy …

Roaming authentication protocol is widely used in wireless network which can enable a
seamless service for the mobile users. However, the classical approach requires the home …