Toward a statistical framework for source anonymity in sensor networks

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Toward a statistical framework for source anonymity in sensor networks

  1. 1. TOWARD A STATISTICAL FRAMEWORK FOR SOURCEANONYMITY IN SENSOR NETWORKSABSTRACT:In certain applications, the locations of events reported by a sensor network need to remainanonymous. That is, unauthorized observers must be unable to detect the origin of such events byanalyzing the network traffic. Known as the source anonymity problem, this problem hasemerged as an important topic in the security of wireless sensor networks, with variety oftechniques based on different adversarial assumptions being proposed.In this work, we present a new framework for modeling, analyzing, and evaluating anonymity insensor networks. The novelty of the proposed framework is twofold: first, it introduces thenotion of "interval indistinguishability” and provides a quantitative measure to model anonymityin wireless sensor networks; second, it maps source anonymity to the statistical problem ofbinary hypothesis testing with nuisance parameters. We then analyze existing solutions fordesigning anonymous sensor networks using the proposed model.We show how mapping source anonymity to binary hypothesis testing with nuisance parametersleads to converting the problem of exposing private source information into searching for anappropriate data transformation that removes or minimize the effect of the nuisance information.By doing so, we transform the problem from analyzing real-valued sample points to binarycodes, which opens the door for coding theory to be incorporated into the study of anonymoussensor networks. Finally, we discuss how existing solutions can be modified to improve theiranonymity.ECWAY TECHNOLOGIESIEEE PROJECTS & SOFTWARE DEVELOPMENTSOUR OFFICES @ CHENNAI / TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORECELL: +91 98949 17187, +91 875487 2111 / 3111 / 4111 / 5111 / 6111VISIT: www.ecwayprojects.com MAIL TO: ecwaytechnologies@gmail.com

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