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Privacy is one of the most important security concerns in radio frequency identification. The publication of hundred RFID-based authentication protocols during the last decade raised the need of designing a dedicated privacy model. An important step has been done with the model of Vaudenay that combines early models into a unified and powerful one. In(More)
After several years of research on cryptographic models for privacy in RFID systems, it appears that no universally model exists yet. Experience shows that security experts usually prefer using their own ad-hoc model than the existing ones. In particular, the impossibility of the models to refine the privacy assessment of different protocols has been(More)
Authentication protocols are usually designed to face an adversary who is able to tamper with the channel, possibly with the prover, but rarely with the verifier. When considering large-scale RFID applications, e.g., mass transportation or ticketing, the last threat is no longer a fiction. A typical case is the loss or theft of a handheld reader. If the(More)
RFID-based access control solutions for mobile environments, e.g. ticketing systems for sport events, commonly rely on readers that are not continuously connected to the back-end system. The readers must so be able to perform their tasks even in offline mode, what commonly requires the management by the readers of sensitive data. We stress in this paper the(More)
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