Stephen A. Weis

Learn More
In this work, we consider privacy in Radio Frequency IDentification (RFID) systems. Our contribution is twofold: (i) We propose a simple, formal definition of strong privacy useful for basic analysis of RFID systems, as well as a different (weaker) definition applicable to multiverifier systems; (ii) We apply our definition to reveal vulnerabilities in(More)
The Auto-ID Center is developing low-cost radio frequency identification (RFID) based systems with the initial application as next generation bar-codes. We describe RFID technology, summarize our approach and our research, and most importantly, describe the research opportunities in RFID for experts in cryptography and information security. The common theme(More)
In an order-preserving encryption scheme, the encryption algorithm produces ciphertexts that preserve the order of their plaintexts. Order-preserving encryption schemes have been studied intensely in the last decade, and yet not much is known about the security of these schemes. Very recently, Boneh et al. (Eurocrypt 2015) introduced a generalization of(More)
This paper presents an efficient construction of a private disjointness testing protocol that is secure against malicious provers and honest-but-curious (semi-honest) verifiers, without the use of random oracles. In a completely semi-honest setting, this construction implements a private intersection cardinality protocol. We formally define both private(More)
Low-cost Radio Frequency Identification (RFID) tags affixed to consumer items as “smartlabels” may emerge as one of the most pervasive computing technologies in history. While RFID systems can yield great productivity gains, they may also expose new threats to the security and privacy of both individuals and organizations. This article gives a brief(More)
Unique and challenging security problems arise due to the scarcity of computational, storage, and power resources in the low-cost pervasive computing environment. Particularly relevant examples of resource-constrained systems are low-cost radio frequency identification (RFID) systems. Surprisingly, the computational abilities of low-cost pervasive devices(More)
Like many technologies, low-cost Radio Frequency Identification (RFID) systems will become pervasive in our daily lives when affixed to everyday consumer items as “smart labels”. While yielding great productivity gains, RFID systems may create new threats to the security and privacy of individuals or organizations. This paper presents a brief description of(More)