A challenging unsolved security problem is how to specify and enforce system-wide security policies; this problem is even more acute in distributed systems with mutual distrust. T...
Lantian Zheng, Stephen Chong, Andrew C. Myers, Ste...
Most current P2P file sharing systems treat their users as anonymous, unrelated entities, and completely disregard any social relationships between them. However, social phenomena...
Johan A. Pouwelse, Pawel Garbacki, Jun Wang, Arno ...
Abstract-- In this paper, we propose a new map-based content sharing system 'MapWiki' for ubiquitous content distribution. In MapWiki, users can publish location-dependen...
An electronic cash system allows users to withdraw coins, represented as bit strings, from a bank or broker, and spend those coins anonymously at participating merchants, so that ...
Ivan Osipkov, Eugene Y. Vasserman, Nicholas Hopper...
In this paper, we describe the Vannotea system - an application designed to enable collaborating groups to discuss and annotate collections of high quality images, video, audio or...
Ronald Schroeter, Jane Hunter, Jonathon Guerin, Im...