{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T16:35:08Z","timestamp":1780763708027,"version":"3.54.1"},"reference-count":68,"publisher":"Association for Computing Machinery (ACM)","issue":"3","license":[{"start":{"date-parts":[[2022,7,13]],"date-time":"2022-07-13T00:00:00Z","timestamp":1657670400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100012774","name":"Innovation Fund Denmark","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100012774","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Nordic University Hub for Industrial IoT"},{"name":"SSF project SEC4Factory","award":["RIT17-0032"],"award-info":[{"award-number":["RIT17-0032"]}]},{"DOI":"10.13039\/501100001858","name":"VINNOVA","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100001858","id-type":"DOI","asserted-by":"crossref"}]},{"name":"H2020 project SIFIS-Home","award":["952652"],"award-info":[{"award-number":["952652"]}]}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Internet Things"],"published-print":{"date-parts":[[2022,8,31]]},"abstract":"<jats:p>The Constrained Application Protocol (CoAP) is a major application-layer protocol for the Internet of Things (IoT). The recently standardized security protocol Object Security for Constrained RESTful Environments (OSCORE) efficiently provides end-to-end security of CoAP messages at the application layer, also in the presence of untrusted intermediaries. At the same time, CoAP supports one-to-many communication, targeting use cases such as smart lighting and building automation, firmware update, or emergency broadcast. Securing group communication for CoAP has additional challenges. It can be done using the novel Group Object Security for Constrained RESTful Environments (Group OSCORE) security protocol, which fulfills the same security requirements of OSCORE in group communication environments. While evaluations of OSCORE are available, no studies exist on the performance of Group OSCORE on resource-constrained IoT devices.<\/jats:p>\n          <jats:p>This article presents the results of our extensive performance evaluation of Group OSCORE over two popular constrained IoT platforms, namely Zolertia Zoul and TI Simplelink. We have implemented Group OSCORE for the Contiki-NG operating system and made our implementation available as open source software. We compared Group OSCORE against unprotected CoAP as well as OSCORE. To the best of our knowledge, this is the first comprehensive and experimental evaluation of Group OSCORE over real constrained IoT devices.<\/jats:p>","DOI":"10.1145\/3523064","type":"journal-article","created":{"date-parts":[[2022,3,26]],"date-time":"2022-03-26T11:20:34Z","timestamp":1648293634000},"page":"1-31","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Performance Evaluation of Group OSCORE for Secure Group Communication in the Internet of Things"],"prefix":"10.1145","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0135-683X","authenticated-orcid":false,"given":"Martin","family":"Gunnarsson","sequence":"first","affiliation":[{"name":"RISE Cybersecurity, RISE Research Institutes of Sweden, Scheelev\u00e4gen, Lund, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4037-0917","authenticated-orcid":false,"given":"Krzysztof Mateusz","family":"Malarski","sequence":"additional","affiliation":[{"name":"DTU Technical University of Denmark, Kongens, Lyngby, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9437-5764","authenticated-orcid":false,"given":"Rikard","family":"H\u00f6glund","sequence":"additional","affiliation":[{"name":"RISE Cybersecurity, RISE Research Institutes of Sweden, Isafjordsgatan, Kista, Sweden, Department of Information Technology, Uppsala University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8842-9810","authenticated-orcid":false,"given":"Marco","family":"Tiloca","sequence":"additional","affiliation":[{"name":"RISE Cybersecurity, RISE Research Institutes of Sweden, Isafjordsgatan, Kista, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2022,7,13]]},"reference":[{"key":"e_1_3_3_2_2","volume-title":"OASIS Standard MQTT Version 5.0","author":"Gupta A. 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