Anonymity and k-Choice Identities
Information Security and Cryptology
Privacy Protection for RFID with Hidden Subset Identifiers
Pervasive '08 Proceedings of the 6th International Conference on Pervasive Computing
Security problems of systems of extremely weak devices
Annales UMCS, Informatica - Security Systems
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We propose a solution for privacy problems regarding use of electronic identification tags such as RFID's. In our scheme the ID tag changes at random driven by its internal circuitry during each activation. The changes are small enough so that the legitimate system can recognize the tag and register the modified ID for the next activation. On the other hand, after a certain number of activations the new ID cannot be linked with the original one. We provide a rigid mathematical analysis of security of this unlinkability property.