An Enhanced of Secure Authentication Scheme for the Internet of Things

In this paper, we cryptanalyze the authentication scheme proposed by Wang et al. [1] by pointing out that their scheme of authentication is vulnerable to several attacks. Afterwards, an Enhanced Secure Authentication Scheme (E-SAS) is presented to solve the security flaws of SAS. The informal security analysis and the formal security verification by the AVISPA tool illustrate that E-SAS is secure face to several active and passive security attacks. Therefore, the performance and security comparisons demonstrate that the E-SAS ensures robust security with less communication and computational overhead.