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Current implementations of secure RFID rely on digital cryptographic primitives in the form of hashes and block ciphers. The presence of these blocks is motivated by privacy requirements, but they increase the overall processing latency, the power consumption, and the silicon area budget of the RFID tag. In addition, existing passive RFID systems rely on simple coding and modulation schemes using narrowband radio frequencies, which can be easily eavesdropped or jammed. The authors propose to implement the link from RFID to reader using Ultra-WideBand (UWB) communications. They show that the use of an advanced modulation scheme offers a new approach to the secure RFID problem.
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