Relaxed Authenticity
نویسندگان
چکیده
In-network data aggregation allows energy-efficient communication within a sensor network. However, such data aggregation introduces new security challenges. As sensor nodes are prone to node-compromise, a fraction of nodes might act maliciously and forge aggregated data. For arbitrary aggregation functions, the verification of authenticity of aggregated data, i.e., its correctness, integrity, and origin, is impossible. Thus, one can either aggregate data and save energy or verify authenticity, not both. We present “ESAWN”, a protocol that probabilistically relaxes authenticity in the presence of a fraction of compromised nodes. This enables a trade-off between probabilistic authenticity and probabilistic, energy-saving data aggregation. Besides theoretical analysis, we present MICA2-based simulation results. They indicate that even for high probabilities of authenticity and fraction of compromised nodes, ESAWN is more energy-efficient compared to (100%-)secure but non-aggregating communication. For example, with a fraction of 20% compromised nodes and 90% authenticity, ESAWN saves up to 40% energy.
منابع مشابه
Comments on relaxed $(gamma, r)$-cocoercive mappings
We show that the variational inequality $VI(C,A)$ has aunique solution for a relaxed $(gamma , r)$-cocoercive,$mu$-Lipschitzian mapping $A: Cto H$ with $r>gamma mu^2$, where$C$ is a nonempty closed convex subset of a Hilbert space $H$. Fromthis result, it can be derived that, for example, the recentalgorithms given in the references of this paper, despite theirbecoming more complicated, are not...
متن کاملWork on Oneself: Rethinking Authenticity
This article addresses the concept of authenticity, a characteristic of late modern Western culture. This characteristic is viewed by some as an ideal and by others as a root of the problems inherent within Western culture. After discussing various viewpoints, the author supports the idea that authenticity should not be totally accepted or rejected and sets forth a proposal based on the so-call...
متن کاملThe Role of authenticity in relationship marketing
This paper examines the concept of authenticity as it applies to relationship marketing. The rationale for this paper is the belief that authenticity is a key variable to consider in the context of successful relationship marketing scholarly attention from business researchers scholars from other disciplines have engaged with authenticity are related to authenticity include trust, integrity and...
متن کاملOn the Authenticity of IELTS Academic Tests
The purpose of this paper was to investigate the authenticity of IELTS academic tests. Bachman and Palmer (1996, p. 23) define authenticity as “the degree of correspondence of the characteristics of a given language test task to the features of a target language task”. Authenticity is then an important aspect of testing since it describes the relationship between the test and the real world. Th...
متن کامل