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The collected consumption data may leak the usage patterns of domestic appliances, so that it may damage the behavior privacy of customers. Most related work to protect data privacy in smart grid relies on cryptographic primitives, for example, encryption, which induces a large amount of power consumption overhead. In this paper, we make the first attempt to propose solutions without any cryptographic computation to protect user privacy. The privacy in smart grid is formally defined in the paper. Three schemes are proposed: random perturbation scheme (RPS), random walk scheme (RWS), and distance-bounded random walk with perturbation scheme (DBS). Three algorithms are also proposed in each scheme, respectively. All schemes are ultra-lightweight in terms of computation without relying any cryptographic primitive. The privacy, soundness, and accuracy of proposed schemes are guaranteed and justified by strict analysis. <\/jats:p>","DOI":"10.1155\/2013\/230140","type":"journal-article","created":{"date-parts":[[2013,3,20]],"date-time":"2013-03-20T21:01:10Z","timestamp":1363813270000},"page":"230140","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Perturbation-Based Schemes with Ultra-Lightweight Computation to Protect User Privacy in Smart Grid"],"prefix":"10.1177","volume":"9","author":[{"given":"Wei","family":"Ren","sequence":"first","affiliation":[{"name":"School of Computer Science, China University of Geosciences, Wuhan 430074, China"},{"name":"Shandong Provincial Key Laboratory of Computer Network, Jinan 250014, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liangli","family":"Ma","sequence":"additional","affiliation":[{"name":"School of Electronic Engineering, Naval University of Engineering, Wuhan 430033, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yi","family":"Ren","sequence":"additional","affiliation":[{"name":"Department of Computer Science, National Chiao Tung University, Hsinchu 30010, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2013,3,20]]},"reference":[{"volume":"2","volume-title":"Privacy and the smart grid","author":"The Smart Grid Interoperability Panel Cyber Security Working Group","key":"B4-2013-230140"},{"key":"B6-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2010.49"},{"key":"B10-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2009.76"},{"key":"B11-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/TSG.2010.2046347"},{"key":"B3-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/TPWRD.2010.2046654"},{"key":"B14-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2010.2081651"},{"key":"B12-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2011.2112310"},{"key":"B7-2013-230140","first-page":"1","volume":"99","author":"Liu J.","year":"2012","journal-title":"IEEE Communications Surveys Tutorials"},{"key":"B9-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2012.6194398"},{"key":"B8-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/TPDS.2012.86"},{"key":"B15-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/TSG.2012.2192487"},{"first-page":"238","volume-title":"Proceedings of the 1st IEEE International Conference on Smart Grid Communications (SmartGridComm \u203210)","author":"Efthymiou C.","key":"B2-2013-230140"},{"key":"B13-2013-230140","doi-asserted-by":"publisher","DOI":"10.1109\/ISGT.2011.5759159"},{"first-page":"1","volume-title":"Proceedings of the IEEE Global Telecommunications Conference (GLOBECOM \u203211)","author":"Cheung J.","key":"B1-2013-230140"},{"first-page":"1","volume-title":"Proceedings of the IEEE PES Innovative Smart Grid Technologies (ISGT \u203212)","author":"He X.","key":"B5-2013-230140"}],"container-title":["International Journal of Distributed Sensor Networks"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1155\/2013\/230140","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/journals.sagepub.com\/doi\/full-xml\/10.1155\/2013\/230140","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1155\/2013\/230140","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,5,16]],"date-time":"2021-05-16T13:36:52Z","timestamp":1621172212000},"score":1,"resource":{"primary":{"URL":"http:\/\/journals.sagepub.com\/doi\/10.1155\/2013\/230140"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,3,1]]},"references-count":15,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2013,3,1]]}},"alternative-id":["10.1155\/2013\/230140"],"URL":"https:\/\/doi.org\/10.1155\/2013\/230140","relation":{},"ISSN":["1550-1477","1550-1477"],"issn-type":[{"type":"print","value":"1550-1477"},{"type":"electronic","value":"1550-1477"}],"subject":[],"published":{"date-parts":[[2013,3,1]]}}}