Untraceable electronic mail, return addresses, and digital pseudonyms
Communications of the ACM
Freenet: a distributed anonymous information storage and retrieval system
International workshop on Designing privacy enhancing technologies: design issues in anonymity and unobservability
Mixminion: Design of a Type III Anonymous Remailer Protocol
SP '03 Proceedings of the 2003 IEEE Symposium on Security and Privacy
Defending Anonymous Communications Against Passive Logging Attacks
SP '03 Proceedings of the 2003 IEEE Symposium on Security and Privacy
Routing in a delay tolerant network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
The predecessor attack: An analysis of a threat to anonymous communications systems
ACM Transactions on Information and System Security (TISSEC)
Practical routing in delay-tolerant networks
Proceedings of the 2005 ACM SIGCOMM workshop on Delay-tolerant networking
Applicability of identity-based cryptography for disruption-tolerant networking
Proceedings of the 1st international MobiSys workshop on Mobile opportunistic networking
Tor: the second-generation onion router
SSYM'04 Proceedings of the 13th conference on USENIX Security Symposium - Volume 13
Compromising Location Privacy inWireless Networks Using Sensors with Limited Information
ICDCS '07 Proceedings of the 27th International Conference on Distributed Computing Systems
Practical Routing in Delay-Tolerant Networks
IEEE Transactions on Mobile Computing
Low-resource routing attacks against tor
Proceedings of the 2007 ACM workshop on Privacy in electronic society
How much anonymity does network latency leak?
Proceedings of the 14th ACM conference on Computer and communications security
Passive-Logging Attacks Against Anonymous Communications Systems
ACM Transactions on Information and System Security (TISSEC)
MobiRate: making mobile raters stick to their word
UbiComp '08 Proceedings of the 10th international conference on Ubiquitous computing
Enhancing interactive web applications in hybrid networks
Proceedings of the 14th ACM international conference on Mobile computing and networking
Towards an information theoretic metric for anonymity
PET'02 Proceedings of the 2nd international conference on Privacy enhancing technologies
Sampled traffic analysis by internet-exchange-level adversaries
PET'07 Proceedings of the 7th international conference on Privacy enhancing technologies
Practical security for disconnected nodes
NPSEC'05 Proceedings of the First international conference on Secure network protocols
Practical traffic analysis: extending and resisting statistical disclosure
PET'04 Proceedings of the 4th international conference on Privacy Enhancing Technologies
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Disruption-tolerant networking holds a great deal of potential for making communications easier and more flexible in pervasive assistive environments. However, security and privacy must be addressed to make these communications acceptable with respect to protecting patient privacy. We propose EnPassant, a system for using disruption-tolerant networking in privacy-preserving way. EnPassant uses concepts from anonymous communications, re-routing messages through groups of peer nodes to hide the relation between the sources and destinations. We describe a set of protocols that explore a practical range of tradeoffs between privacy and communication costs by modifying how closely the protocol adheres to the optimal predicted path. We also describe the cryptographic tools needed to facilitate changes in-group membership. Finally, we present the results of extensive trace-based simulation experiments that allow us to both compare between our proposed protocols and observe the costs of increasing the number of groups and intermediate nodes in a path. Copyright © 2010 John Wiley & Sons, Ltd.