E-SAS : Enhanced Secure Authentication System for Healthcare Applications using Wireless Medical Sensor Networks

One of the fields where wireless sensor networks are being widely applied is the area body sensor networks for healthcare applications. As healthcare applications manage private data of patients, the security becomes one of the most critical requirements to consider. In this aspect, there have been several researches delivering security mechanisms for healthcare services. However, Yoo analyzed several of those approaches and observed that they includes serious security flaws: the scheme proposed for Khan and Kumari presents vulnerabilities to data leakage, man in the middle attack, password guessing attack, and manages insecure keys, while Shin et al.’s scheme includes vulnerabilities to data leakage, password guessing attack, replay attack, and manages insecure keys. To overcome the mentioned security issues, this work proposes an enhanced secure user authentication system for health applications. The presented scheme solves the identified security flaws and excels in terms of performance and efficiency. Key-Words: Sensor network, healthcare service, user authentication, two factor authentication, wireless body area network, cryptanalysis, BAN logic, IoT.