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Security Analysis of the SASI Protocol

Platform : Mobile Computing

IEEE Projects Years : 2009

The ultralightweight RFID protocols only involve simple bitwise operations (like XOR, AND, OR, etc.) on tags. In this paper,. The former permanently disables the authentication capability of a RFID tag by destroying synchronization between the tag and the RFID reader. The latter links a compromised tag with past actions performed on this tag. A RFID system typically consists of two components: a set of tags, also called transponders, and a set of readers, also called transceivers. Tags are attached to physical objects. Readers query these tags for some (potentially unique) identifying information about the objects to which tags are attached. Although readers are often regarded as a simple conduit to a back-end database, for simplicity, we treat a reader and a back-end database as a single entity. A key security problem in such a context is that an adversary A can arbitrarily modify the conversations between any pair of tag and reader and indeed initiates and terminates a session at its choice.

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