Authenticated Diffie-Hellman Key Agreement Protocols
SAC '98 Proceedings of the Selected Areas in Cryptography
The Resurrecting Duckling: Security Issues for Ad-hoc Wireless Networks
Proceedings of the 7th International Workshop on Security Protocols
Secure long term communities in ad hoc networks
Proceedings of the 1st ACM workshop on Security of ad hoc and sensor networks
Untraceability of RFID protocols
WISTP'08 Proceedings of the 2nd IFIP WG 11.2 international conference on Information security theory and practices: smart devices, convergence and next generation networks
The AVISPA tool for the automated validation of internet security protocols and applications
CAV'05 Proceedings of the 17th international conference on Computer Aided Verification
Privacy issues in vehicular ad hoc networks
PET'05 Proceedings of the 5th international conference on Privacy Enhancing Technologies
Information confinement, privacy, and security in RFID systems
ESORICS'07 Proceedings of the 12th European conference on Research in Computer Security
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More and more mobile devices feature wireless communication capabilities. They can self-organize in a mobile ad hoc network in order to communicate and maintain connectivity without any infrastructure component. In this context, some devices may benefit from established trust relations in order to communicate private data. Various solutions already exist for establishing and detecting such trust relations. But is it still possible to detect a trust relation in an unobservable manner? That is, in a way that an attacker cannot understand whether devices share a trust relation or not. We exhibit a solution to this problem. Our solution guaranties the anonymity and the unobservability of participants against passive and active attackers. The security properties of the solution are machine checked with the AVISPA framework [2] and the SPAN tool [5]. The main applications could be found in mobile ad hoc networks and in vehicular networks [6,7] where anonymity and unobservability contribute to a better privacy.