Background: It is paramount to secure the healthcare system from unauthorized users
and security attacks through appropriate security mechanisms as a break in the communication
process and which leads to leaked or blurred messages, which is totally unacceptable. Moreover,
mutual authentication is a core requirement for privacy protection as it is paramount to control
who is accessing the sensed data and whether they are authenticated or not. In addition to this, energy
efficiency is a major issue to be discussed.
Objective: After examination of the present related schemes, we proposed a novel Secured, Anonymity
Preserving and Lightweight Mutual Authentication and Key Agreement Scheme
(SALMAKA) for two-hop WBAN topology; where the scheme mutually authenticates the sensing
nodes with the controller node in an anonymous, energy-efficient manner and establishes session
Methods: To corroborate the accuracy of the proposed scheme, Burrows-Abadi-Needham (BAN)
logic and Automated Validation of Internet Security Protocols and Applications (AVISPA) simulator
are used. Apart from this, informal security evaluation is also performed in detail.
Results: To exhibit the practical application and performance of the proposed scheme, it is compared
with the existing related schemes and the results reveal that the proposed scheme reduces
energy consumption, processing cost and processing time significantly.
Conclusion: A Secured, Anonymity Preserving and Lightweight Mutual Authentication and Key
Agreement Scheme (SALMAKA) for two-hop WBAN topology is propounded.