New Trends In Computer Networks
Spanning a wide spectrum of topics in computer networks, this book presents a selective collection of papers from the 20th International Symposium on Computer and Information Sciences, held in Istanbul, Turkey.
TABLE OF CONTENTS New Trends In Computer Networks
Visual Device Identification for Security Services in Ad-Hoc Wireless Networks
DONGWAN SHIN
Computer Science Department, New Mexico Tech, Socorro, NM 87801, USA E-mail: doshin@nmt.edu
SEUNGHYUN IM
Computer Science Department, University of North Carolina at Charlotte, Charlotte, NC 28223, USA E-mail: sim@uncc.edu
This paper discusses a novel approach to identifying entities involved in ad-hoc wireless communications through using an efficient visual code system called UbiCode. UbiCode, used in an out-of-band channel in order to bootstrap trust between entities unknown to each other, facilitates a mechanism for demonstrative identification of entities involved in ad-hoc wireless communications. We present the design of UbiCode as well as identification protocols leveraging the system. We also demonstrate our approach through a proof-of-concept implementation.
1. Introduction
The lack of both trusted third party and physical restraint in ad-hoc wireless networks makes it hard to provide security services for mobile nodes. One of the key problems in those environments, especially where those nodes need to communicate in a secure and spontaneous manner, is the identification of the other entity (typically device) in a communication preceding authenticated key establishment. Demonstrative identification is a must in order to bootstrap other security services; it is often referred to as one based on physical context (for example, audio with limited transmission range is used to demonstratively identify each other in a communication)4.
1.1. Motivating Examples
Suppose people in ad-hoc wireless networks want to exchange information with nearby people or devices. Establishing secure communications are required in many cases in these environments where information to be exchanged must not be eavesdropped or tampered.
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