Paper 2011/395 Original: eprint.iacr.org/2011/395 ↗
Improved Anonymity for Key-Trees
Abstract
Randomized hash-lock protocols for Radio Frequency IDentification (RFID) tags offer forward untraceability, but incur heavy search on the server. Key trees have been proposed as a way to reduce search times, but because partial keys in such trees are shared, key compromise affects several tags. Buttyän et al. have quantified the resulting loss of anonymity in the system, and proposed specific tree properties in an attempt to minimize this loss. We will further improve upon these results, and provide a proof of optimality. Finally, our proposals are compared to existing results by means of simulation.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2011-07-28: last updated
- 2011-07-28: published
- Short URL
- https://ia.cr/2011/395
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2011/395,
author = {Michael Beye and Thijs Veugen},
title = {Improved Anonymity for Key-Trees},
howpublished = {Cryptology {ePrint} Archive, Paper 2011/395},
year = {2011},
url = {https://eprint.iacr.org/2011/395}
}