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Practical Human-Machine Identification over Insecure Channels

Published in Journal of Combinatorial Optimization

Human-machine identification is an important problem in cryptography that has applications in network access, electronic commerce, and smart-card design. It is a hard problem largely because human users have a very limited capacity in memorizing secrets and in performing protocols. Therefore, in addition to the requirement that a human-machine iden...

Approaching Secure Communications in a Message-Oriented Mobile Computing Environment

Published in Multimedia Tools and Applications

The Personal Mobility Management System (PMMS), an agent-based message-oriented mobile computing application developed at Multimedia and Mobile Agent Research Laboratory, aims to provide personalized services and resources access to its nomadic users within a virtual network across different organizations. This paper analyses and discusses the secu...

Key Management in Ad Hoc Networks / Nyckelhantering i Ad Hoc Nät

This thesis covers the issue of securing ad hoc networks. Such networks exhibit a number of characteristics that make such a task challenging. One of the major challenges is that ad hoc networks typically lack a fixed infrastructure both in form of physical infrastructure such as routers, servers and stable communication links and in the form of an...

Peer-to-peer : time to lock the door

Is a regulating policy concerning peer-to-peer applications required so that companies and institutions can better manage the security issues of internal peer-to-peer applications? There is high security and privacy risks involved when using p2p applications like KaZaA, Bearshare, Audiogalaxy and ICQ. With the high speed networks of today it is ver...

A novel computer architecture to prevent destruction by viruses

Published in Journal of Computer Science and Technology

In today's Internet computing world, illegal activities by crackers pose a serious threat to computer security. It is well known that computer viruses, Trojan horses and other intrusive programs may cause severe and often catastrophic consequences. This paper proposes a novel secure computer architecture based on security-code. Every instruction/da...