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Full-Text Articles in Physical Sciences and Mathematics
Mitigating Dos Attacks Against Broadcast Authentication In Wireless Sensor Networks, Peng Ning, An Liu, Wenliang Du
Mitigating Dos Attacks Against Broadcast Authentication In Wireless Sensor Networks, Peng Ning, An Liu, Wenliang Du
Electrical Engineering and Computer Science - All Scholarship
Broadcast authentication is a critical security service in wireless sensor networks. There are two general approaches for broadcast authentication in wireless sensor networks: digital signatures and µTESLA-based techniques. However, both signature-based and µTESLA-based broadcast authentication are vulnerable to Denial of Services (DoS) attacks: An attacker can inject bogus broadcast packets to force sensor nodes to perform expensive signature verifications (in case of signature-based broadcast authentication) or packet forwarding (in case of µTESLA-based broadcast authentication), thus exhausting their limited battery power. This paper presents an efficient mechanism called message specific puzzle to mitigate such DoS attacks. In addition to signature-based or …
Privacy-Maxent: Integrating Background Knowledge In Privacy Quantification, Wenliang Du, Zhouxuan Teng, Zutao Zhu
Privacy-Maxent: Integrating Background Knowledge In Privacy Quantification, Wenliang Du, Zhouxuan Teng, Zutao Zhu
Electrical Engineering and Computer Science - All Scholarship
Privacy-Preserving Data Publishing (PPDP) deals with the publication of microdata while preserving people’s private information in the data. To measure how much private information can be preserved, privacy metrics is needed. An essential element for privacy metrics is the measure of how much adversaries can know about an individual’s sensitive attributes (SA) if they know the individual’s quasi-identifiers (QI), i.e., we need to measure P(SA | QI). Such a measure is hard to derive when adversaries’ background knowledge has to be considered. We propose a systematic approach, Privacy-MaxEnt, to integrate background knowledge in privacy quantification. Our approach is based on …