able to guarantee the security of IoT communication with significant energy mitigation as well as throughput improvement compared to conventional cipher-based communication schemes. In section \[attacks\], we evaluate the security of ExTru against physical attacks such as side-channel, scan-based SAT, and algebraic attack. In \[sec:results\], the experimental results have been provided and discussed. Finally, Section \[sec:conclusion\] concludes the paper.

Related Work {#sec:related}
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Due to the resource-constrained nature of IoT devices, a big challenge in guaranteeing the security of this group of devices is that the implementation of the security measures must be sufficiently lightweight, which prevents the designers to directly use conventional block ciphers, such as AES-GCM [@dworkin2007sp]. Many studies have been taken by the research community to not only address security issues in IoT networks but also to increase the efficiency by lowering the power (particularly energy) consumption and increasing the throughput. For instance, the fact that the elliptic curves cryptography (ECC) achieves guaranteed security with reduced resource requirements has attracted the research community [@piedra2013extending; @nam2014provably]. The work in [@marin2015optimized] has constructed an optimized ECC for secure communication in heterogeneous IoT devices based on Schnorr signature. Also, a simple key negotiation protocol has been introduced in this work 