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CHES
2008
Springer

Hash Functions and RFID Tags: Mind the Gap

13 years 5 months ago
Hash Functions and RFID Tags: Mind the Gap
Abstract. The security challenges posed by RFID-tag deployments are wellknown. In response there is a rich literature on new cryptographic protocols and an on-tag hash function is often assumed by protocol designers. Yet cheap tags pose severe implementation challenges and it is far from clear that a suitable hash function even exists. In this paper we consider the options available, including constructions based around compact block ciphers. While we describe the most compact hash functions available today, our work serves to highlight the difficulties in designing lightweight hash functions and (echoing [17]) we urge caution when routinely appealing to a hash function in an RFID-tag protocol.
Andrey Bogdanov, Gregor Leander, Christof Paar, Ax
Added 12 Oct 2010
Updated 12 Oct 2010
Type Conference
Year 2008
Where CHES
Authors Andrey Bogdanov, Gregor Leander, Christof Paar, Axel Poschmann, Matthew J. B. Robshaw, Yannick Seurin
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