Research Interests

I am primarily interested in all aspects of security in distributed systems. I have been working on applying cryptographic techniques in building secure protocols to solve various problems in distributed systems.

Recent talks

On-board Credentials with Open Provisioning
Initializing Security Associations for Personal Devices
Phishing and Mobile Phones

List of publications

Disclaimer

The documents distributed from this page have been provided as a means to ensure timely dissemination of scholarly and technical work on a noncommercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.
Using Salience Differentials to Making Visual Cues Noticeable (with Andreas Heiner)
Secure Roaming with Identity Metasystems (with Long Nguyen Hoang and Pekka Laitinen)
A Platform for OnBoard Credentials (with Jan-Erik Ekberg)
Beyond Secure Channels (with Yacine Gasmi, Ahmad-Reza Sadeghi, Patrick Stewin and Martin Unger)
Enabling Fairer Digital Rights Management with Trusted Computing (with Ahmad-Reza Sadeghi, Christian Stüble, Marko Wolf and Jan-Erik Ekberg)
Applicability of identity-based Cryptography in Disruption-tolerant Networking (with Kari Kostiainen, Philip Ginzboorg, Joerg Ott, and Cheng Luo)
Secure software installation in a mobile environment (with Andreas Heiner)
Security Associations in Personal Networks: A Comparative Analysis (with Jani Suomalainen and Jukka Valkonen)
Usability Analysis of Secure Pairing Methods (with Ersin Uzun and Kristiina Karvonen)
Ad Hoc Security Associations for Groups (with Jukka Valkonen and Kaisa Nyberg)
Secure Device Pairing based on a Visual Channel (with Nitesh Saxena, Jan-Erik Ekberg and Kari Kostiainen)
Efficient Mutual Data Authentication Using Manually Authenticated Strings (with Sven Laur and Kaisa Nyberg)
Remote storage for mobile devices (with Jarkko Tolvanen, Jaakko Lipasti and Tapio Suihko)
Visitor management in Personal wireless networks (with Seamus Moloney, Philip Ginzboorg, and Kari Kostiainen)
Extending Cellular Authentication as a Service (with Pekka Laitinen et al.)
Issues in Initializing Security
On the usefulness of proof-of-possession (with Valtteri Niemi and Pekka Laitinen)
Man-in-the-middle in tunneled authentication protocols (with Kaisa Nyberg and Valtteri Niemi)
Defining authorization domains using virtual deviecs (with Sampo Sovio and Kaisa Nyberg)
Securing ad hoc routing protocols (with Manel Guerrero Zapata)
Secure Vickrey Auctions without Threshold Trust. (with Helger Lipmaa and Valtteri Niemi).
Authentication and key generation for mobile IP using GSM authentication and roaming (with Henry Haverinen and Tuomas Määttänen)
SEMPER - Secure Electronic Marketplace for Europe (edited by Gerard Lacoste et al), Springer, Lecture Notes in Computer Science 1854, 2000
Key Agreement in Ad-hoc Networks (with Philip Ginzboorg)
Authenticating Public Terminals (with Michael Steiner, Hervé Debar, and Michael Waidner)
Towards a Framework for Handling Disputes in Payment Systems (with Michael Steiner and Els van Herreweghen)
Protecting the Computation Results of Free-roaming Agents (with Ceki Gülcü and Günter Karjoth)
Fairness in Electronic Commerce
More on Optimistic Fair Exchange (with Victor Shoup and Michael Waidner)
Design of a Generic Payment Service (with Jose Abad-Peiro, Michael Steiner, and Michael Waidner)
Electronic Payment Systems (with Phil Janson, Michael Steiner, and Michael Waidner)
Optimistic Protocols for Fair Exchange (with Matthias Schunter and Michael Waidner)
Server-Supported Signatures (with Gene Tsudik and Michael Waidner)
Untraceability in Mobile Networks (with Didier Samfat and Refik Molva)
Security Issues in Mobile Computing
Anonymity in a Mobile Computing Environment

In a previous life...

Parallel Algorithms for Constructing the Convex Hull in 2-Dimensions.
A Neural Network Simulator for the Connection Machine. (with Ravi Shankar et al)
A Parallel Free-text Search System with Indexing. (with Ophir Frieder and Sanjay Ranka)
A Parallel Implementation of the Hough Transform Method. (with Ravi Shankar)


Last modified: Sun Dec 23 20:14:17 EET 2007