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In Internet of things\u2013based collaborative fog computing systems, a fog node aggregating lots of data from Internet of things devices has to transmit the information to distributed cloud servers that will collaboratively verify it based on some predefined auditing policy. However, compromised fog nodes controlled by an adversary might inject bogus data to cheat or confuse remote servers. It also causes the waste of communication and computation resources. To further control the lifetime of signing capability for fog nodes, an appropriate mechanism is crucial. In this article, the author proposes a time-constrained strong multi-designated verifier signature scheme to meet the above requirement. In particular, a conventional non-delegatable strong multi-designated verifier signature scheme with low computation is first given. Based on its constructions, we show how to transform it into a time-constrained variant. The unforgeability of the proposed schemes is formally proved based on the famous elliptic curve discrete logarithm assumption. The security requirement of strong signer ambiguity for our substantial constructions is also analyzed by utilizing the intractable assumption of decisional Diffie\u2013Hellman. Moreover, some comparisons in terms of the signature size and computational costs for involved entities among related mechanisms are made. <\/jats:p>","DOI":"10.1177\/15501477211001760","type":"journal-article","created":{"date-parts":[[2021,3,16]],"date-time":"2021-03-16T23:33:02Z","timestamp":1615937582000},"page":"155014772110017","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["Time-constrained strong multi-designated verifier signature suitable for Internet of things\u2013based collaborative fog computing systems"],"prefix":"10.1177","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3657-3241","authenticated-orcid":false,"given":"Han-Yu","family":"Lin","sequence":"first","affiliation":[{"name":"Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung, Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2021,3,15]]},"reference":[{"key":"bibr1-15501477211001760","first-page":"360","volume-title":"Proceedings of the 2012 IEEE 2nd international conference on cloud computing and intelligence systems (CCIS\u20192012)","volume":"1","author":"Huang Y"},{"key":"bibr2-15501477211001760","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2019.1800778"},{"first-page":"238","volume-title":"Proceedings of the 2012 international conference on recent advances in computing and software systems","author":"Agarwala A","key":"bibr3-15501477211001760"},{"key":"bibr4-15501477211001760","first-page":"550","volume-title":"Proceedings of the 2010 international conference on computer design and applications (ICCDA\u20192010)","volume":"5","author":"Liu Q"},{"first-page":"863","volume-title":"Proceedings of the 2018 international conference on computing, power and communication technologies (GUCON)","author":"Singh A","key":"bibr5-15501477211001760"},{"first-page":"876","volume-title":"Proceedings of the 2011 international conference on mechatronic science, electric engineering and computer (MEC)","author":"Haiyan H","key":"bibr6-15501477211001760"},{"key":"bibr7-15501477211001760","doi-asserted-by":"publisher","DOI":"10.1007\/0-387-34805-0_20"},{"key":"bibr8-15501477211001760","doi-asserted-by":"publisher","DOI":"10.1007\/3-540-68339-9_13"},{"first-page":"40","volume-title":"Proceedings of the 6th international conference on information security and cryptology (ICISC\u20192003)","author":"Saeednia S","key":"bibr10-15501477211001760"},{"key":"bibr11-15501477211001760","first-page":"313","volume-title":"Proceedings of the 9th Australasian conference on information security and privacy (ACISP\u20192004; 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