Abstract

With the advancement of Internet of Things (IoT) technology and rapid growth of WSN applications, provides an opportunity to connect WSN to IoT, which results in the secure sensor data can be accessible via in secure Internet. The integration of WSN and IoT effects lots of security challenges and requires strict user authentication mechanism. Quite a few isolated user verification or authentication schemes using the password, the biometrics and the smart card have been proposed in the literature. In 2013, A.K Das et al. designed a biometric-based remote user verification scheme using smart card for heterogeneous wireless sensor networks. A.K Das et al insisted that their scheme is secure against several known cryptographic attacks. Unfortunately, in this manuscript we will show that their scheme fails to resist replay attack, user impersonation attack, failure to accomplish mutual authentication and failure to provide data privacy.

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