A Robust Smart Card based Authentication and Key Agreement Scheme for WSN using Fuzzy Extractor

As Wireless Sensor Networks (WSN) uses the open channel for communication between the end users and the resource-constrained sensors; maintaining privacy and security is always a challenging task. In this context, Khalid et al. proposed a biometric-based user authentication and Key agreement (AKA) scheme in WSN based on intelligent sensors. However, during this research, it is found that the schemes have many computational flaws and are under the threat of different attacks, such as Impersonation attacks, Stolen Smart Card (SC) attacks, etc. So, to overcome the vulnerabilities found in Khalid et al.'s scheme, an improved robust mutual AKA scheme for WSNs having intelligent sensors is proposed in this article. Moreover, the correctness of the scheme is verified by Burrows-Abadi-Needham (BAN) logic, and the security is proved by Automated Validation of Internet Security Protocols and Applications (AVISPA) simulation tool. Through various security analysis, performance evaluation and comparison with the existing related schemes shows that the proposed scheme could not only highly resistance against various well-known attacks than others but also maintain the low cost at sensor nodes, as well.