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WMCSA
2009
IEEE
16 years 29 days ago
We saw each other on the subway: secure, anonymous proximity-based missed connections
There is an inherent tension between the value provided by Location-Based Services (LBSs) and the location-privacy concerns they raise. Unfortunately, users are often forced to ei...
Justin Manweiler, Ryan Scudellari, Zachary Cancio,...
CSFW
2008
IEEE
16 years 21 days ago
DKAL: Distributed-Knowledge Authorization Language
DKAL is a new declarative authorization language for distributed systems. It is based on existential fixed-point logic and is considerably more expressive than existing authoriza...
Yuri Gurevich, Itay Neeman
P2P
2008
IEEE
16 years 19 days ago
Transaction Rate Limiters for Peer-to-Peer Systems
We introduce transaction rate limiters, new mechanisms that limit (probabilistically) the maximum number of transactions a user of a peer-to-peer system can do in any given period...
Marcos Kawazoe Aguilera, Mark Lillibridge, Xiaozho...
WIMOB
2008
IEEE
16 years 18 days ago
Random Beacon for Privacy and Group Security
Abstract—Most contemporary security mechanisms and protocols include exchange of random or time-variant nonces as an essential means of protection against replay and other threat...
Aleksi Saarela, Jan-Erik Ekberg, Kaisa Nyberg
COLCOM
2007
IEEE
16 years 17 days ago
Countering feedback sparsity and manipulation in reputation systems
—Reputation systems provide a promising way for building trust through social control in collaborative communities by harnessing the community knowledge in the form of feedback. ...
Li Xiong, Ling Liu, Mustaque Ahamad