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Thus, it is difficult to choose the appropriate authentication scheme objectively. This paper presents a quantitative comparison of three authentication schemes, including blockchain\u2010based authentication, a widely discussed new approach for IoT security. This paper focuses on network\u2010level simulation instead of the protocol, providing a different angle when evaluating an authentication scheme. The simulations include five common topologies in IoT networks under five different attack strategies. The results show that the blockchain\u2010based scheme has the most substantial resilience compared to PKI\u2010based and PSK methods, while the computational cost is 1% less than the PKI\u2010based method. In addition, the PSK method is most energy efficient as its computational cost is only around 1% of PKI\u2010based and blockchain\u2010based methods.<\/jats:p>","DOI":"10.1111\/exsy.13603","type":"journal-article","created":{"date-parts":[[2024,4,11]],"date-time":"2024-04-11T23:40:15Z","timestamp":1712878815000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Comparison on resilience and energy efficiency of authentication schemes in <scp>IoT<\/scp> networks"],"prefix":"10.1111","volume":"42","author":[{"given":"Chi Ho","family":"Lau","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering City University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8524-229X","authenticated-orcid":false,"given":"Sammy","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering City University of Hong Kong  Hong Kong China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,4,11]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.3390\/fi15120398"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.comnet.2021.108465"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2021.3077655"},{"key":"e_1_2_8_5_1","doi-asserted-by":"crossref","unstructured":"Andrea I. Chrysostomou C. &Hadjichristofi G.(2015).Internet of things: Security vulnerabilities and challenges. In2015 IEEE Symposium on Computers and Communication (ISCC) 180\u2013187.","DOI":"10.1109\/ISCC.2015.7405513"},{"key":"e_1_2_8_6_1","doi-asserted-by":"crossref","unstructured":"Ara\u00fajo R. P. Souza F. S. H. D. Ueyama J. Villas L. A. &Guidoni D. L.(2015).On the analysis of newman & watts and kleinberg small world models in wireless sensor networks. In2015 IEEE 14th International Symposium on Network Computing and Applications 17\u201321.","DOI":"10.1109\/NCA.2015.39"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.26599\/BDMA.2020.9020010"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/3-540-48285-7_20"},{"key":"e_1_2_8_9_1","doi-asserted-by":"crossref","unstructured":"De Masi G.(2018).The impact of topology on Internet of Things: A multidisciplinary review. 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