Abstract
The Internet of things (IoT) has been widely used for various applications including medical and transportation systems, among others. Smart medical systems have become the most effective and practical solutions to provide users with low-cost, noninvasive, and long-term continuous health monitoring. Recently, Jia et al. proposed an authentication and key agreement scheme for smart medical systems based on fog computing and indicated that it is safe and can withstand a variety of known attacks. Nevertheless, we found that it consists of several flaws, including known session-specific temporary information attacks and lack of per-verification. The opponent can readily recover the session key and user identity. In this paper, we propose a secure authentication and key agreement scheme, which compensates for the imperfections of the previously proposed. For a security evaluation of the proposed authentication scheme, informal security analysis and the Burrows–Abadi–Needham (BAN) logic analysis are implemented. In addition, the ProVerif tool is used to normalize the security verification of the scheme. Finally, the performance comparisons with the former schemes show that the proposed scheme is more applicable and secure.
Highlights
A wireless sensor network (WSN) [1,2,3,4,5] is a multihop self-organizing network system formed by several inexpensive minisensor nodes distributed in the detection region by wireless communication. e aim of WSN is to gather and process the information of the sensing objects in the network coverage area and transmit it to the observer. e WSN is a significant foundation of the Internet of things and has been used in several fields, such as smart healthcare
In a WSNbased healthcare system, medical sensors are physically applied on patients, and the acquired data are forwarded to authorized entities in a secure manner
Hamid et al [45] proposed a third-party single-round authenticated key agreement (AKA) protocol with bilinear pairing for this feature and indicated that it can ensure the privacy of medical data of the fog-based medical system
Summary
A wireless sensor network (WSN) [1,2,3,4,5] ( called sensor network) is a multihop self-organizing network system formed by several inexpensive minisensor nodes distributed in the detection region by wireless communication. e aim of WSN is to gather and process the information of the sensing objects in the network coverage area and transmit it to the observer. e WSN is a significant foundation of the Internet of things and has been used in several fields, such as smart healthcare. Hayajneh et al [34] proposed a lightweight authentication scheme based on the Rabin signature, which is used for the remote monitoring of patients by wireless sensor networks. In 2018, Amin et al [35] proposed a lightweight AKA protocol that is applied to IoT devices in a distributed cloud computing environment. Hamid et al [45] proposed a third-party single-round AKA protocol with bilinear pairing for this feature and indicated that it can ensure the privacy of medical data of the fog-based medical system. Jia et al [46] proposed an AKA scheme for a fogdriven IoT healthcare system using bilinear pairs, in which the cloud server authenticates the IoT device as well as the fog node and generates a shared common session key between them.
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