International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Jeongdae Hong

Publications

Year
Venue
Title
2009
EPRINT
Reducing RFID Reader Load with the Meet-in-the-Middle Strategy
Jung Hee Cheon Jeongdae Hong Gene Tsudik
In almost any RFID system, a reader needs to identify, and optionally authenticate, a multitude of tags. If each tag has a unique secret, identification and authentication are trivial, however, the reader (or a back-end server) needs to perform a brute-force search for each tag-reader interaction. In this paper, we suggest a simple, efficient and secure technique that reduces reader computation to $O(\sqrt N \cdot \log N)$. Our technique is based on the well-known ``meet-in-the-middle'' strategy used in the past to attack certain symmetric ciphers.

Coauthors

Jung Hee Cheon (1)
Gene Tsudik (1)