Increasingly, everyday items are enhanced to pervasive devices by embedding computing power and their interconnection leads to Mark Weiser’s famous vision of ubiquitous computing (ubicomp), which is widely believed to be the next paradigm in information technology. The mass deployment of pervasive devices promises on the one hand many benefits (e.g. optimized supply-chains), but on the other ha...

A smart-card-based user authentication scheme for wireless sensor networks (hereafter referred to as a SCA-WSN scheme) is designed to ensure that only users who possess both a smart card and the corresponding password are allowed to gain access to sensor data and their transmissions. Despite many research efforts in recent years, it remains a challenging task to design an efficient SCA-WSN sche...

In recent years there has been a wide-spread deployment of batterypowered and passive devices such as RFID tags, systems with very strong limitations on area, cost and power budgets. Deploying cryptographic solutions for these systems is both important, because it could unlock several security-critical applications, and challenging, due to the stringent budgets: the overheads of even the smalle...

Due to the tight cost and constrained resources of highvolume consumer devices such as RFID tags, smart cards and wireless sensor nodes, it is desirable to employ lightweight and specialized cryptographic primitives for many security applications. Motivated by the design of the well-known Enigma machine, we present a novel ultralightweight cryptographic algorithm, referred to as Hummingbird, fo...

The security and privacy of the tag carrier has become the bottle neck of Radio Frequency Identification (RFID) system development further. In this paper, we propose a robust authentication protocol based on Elliptic Curve Cryptography (ECC), which meets the requirement of resource-limited RFID systems. Our protocol achieves mutual authentication and possesses lightweight feature by reducing th...

As computing becomes pervasive, embedded systems are deployed in a wide range of domains, including industrial systems, critical infrastructures, private and public spaces as well as portable and wearable applications. An integral part of the functionality of these systems is the storage, access and transmission of private, sensitive or even critical information. Therefore, the confidentiality ...

Wireless mesh networks (WMNs) are gaining growing interest as a promising technology for ubiquitous high-speed network access. While much effort has been made to address issues at physical, data link, and network layers, little attention has been paid to the security aspect central to the realistic deployment of WMNs. We propose UPASS, the first known secure authentication and billing architect...