Abstract
WSN (wireless sensor network) is one of the main technologies in IoT (Internet of Things) applications or services. To date, several schemes have been proposed to establish a pair-wise key between two nodes in WSN, and most of them are designed to establish long-term keys used throughout the network lifetime. However, in the near future, if WSN will be used for information infrastructures in various fields such as manufacturing, distribution, or public facilities management and its life cycle can be as long as that of other common networks, it will definitely be advantageous in terms of security to encrypt messages using session keys instead of long-term keys. In this paper, we propose a session key establishment scheme for clustered sensor networks that is based on elliptic curve Diffie-Hellman (ECDH) key exchange and hash chain. The proposed scheme eliminates vulnerabilities of existing schemes for WSN and has improved security. The proposed scheme is efficient in terms of energy costs compared to related schemes.
Highlights
A wireless sensor network (WSN) is composed of dozens to thousands of sensor nodes and more than one gateway and is employed with the objective of collecting data regarding the conditions or changes in the target area [1, 2]
WSN is vulnerable to attacks such as node impersonation attacks, man-in-themiddle (MITM) attacks, and denial-of-service (DoS) attacks by eavesdropping or altering of the messages transmitted in wireless channels, as are other common wireless networks [6,7,8]
Lai et al.’s BROSK [11], Eschenauer and Gligor’s random key pool-based scheme [12], and so forth provide the function of establishing a pair-wise key between sensor nodes [13]. Such schemes are designed with the objective of establishing a long-term key to be used throughout the lifetime of WSN under the assumption that the life cycle of WSN is much shorter than the life cycle of other networks [14]
Summary
A wireless sensor network (WSN) is composed of dozens to thousands of sensor nodes and more than one gateway and is employed with the objective of collecting data regarding the conditions or changes in the target area [1, 2]. The security and the energy costs should be considered when designing the scheme because the nodes in WSNs are battery-powered To meet these design requirements, the proposed scheme establishes session keys based on elliptic curve Diffie-Hellman (ECDH) key exchange [21, 22], an effective asymmetric key technique. It employs hash chain [23,24,25,26,27] in order to provide mutual authentication between the gateway and the cluster head, verification of message integrity, and session key establishment, considering energy costs.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
