Paper 2012/465
T-MATCH: Privacy-Preserving Item Matching for Storage-Only RFID Tags
Kaoutar Elkhiyaoui, Erik-Oliver Blass, and Refik Molva
Abstract
RFID-based tag matching allows a reader Rk to determine whether two tags Ti and Tj store some attributes that jointly fulfill a boolean constraint. The challenge in designing a matching mechanism is tag privacy. While cheap tags are unable to perform any computation, matching has to be achieved without revealing the tags’ attributes. In this paper, we present T-MATCH, a protocol for secure and privacy preserving RFID tag matching. T-MATCH involves a pair of tags Ti and Tj , a reader Rk, and a backend server S. To ensure tag privacy against Rk and S, T-MATCH employs a new technique based on secure two-party computation that prevents Rk and S from disclosing tag attributes. For tag privacy against eavesdroppers, each tag Ti in T-MATCH stores an IND-CPA encryption of its attribute. Such an encryption allows Rk to update the state of Ti by merely re-encrypting Ti’s ciphertext. T-MATCH targets cheap tags that cannot perform any computation, but are only required to store 150 bytes.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Shorter version published in RFIDsec 2012
- Keywords
- RFIDtag matchingprivacy
- Contact author(s)
- kaoutar elkhiyaoui @ gmail com
- History
- 2012-08-18: received
- Short URL
- https://ia.cr/2012/465
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2012/465,
author = {Kaoutar Elkhiyaoui and Erik-Oliver Blass and Refik Molva},
title = {T-{MATCH}: Privacy-Preserving Item Matching for Storage-Only {RFID} Tags},
howpublished = {Cryptology {ePrint} Archive, Paper 2012/465},
year = {2012},
url = {https://eprint.iacr.org/2012/465}
}
