In mobile teamwork environments two basic problems exist: how to discover someone based on a profile (skills, reputations) and how to assess that person’s “credibility” (tr...
Policy override is gaining traction in the research community to improve the efficiency and usability of authorization mechanisms. These mechanisms turn the conventional privilege...
We extend a particular access control framework, the Privilege Calculus, with a possibility to override denied access for increased flexibility in hard to define or unanticipated...
Erik Rissanen, Babak Sadighi Firozabadi, Marek J. ...
Distributed Hash Tables (DHT) was not designed to be secure against malicious users. But some secure systems like trust and reputation management algorithms trust DHT with their d...
Most trust models in Peer-to-Peer (P2P) systems are identity based, which means that in order for one peer to trust another, it needs to know the other peer's identity. Hence,...
Li Lu, Jinsong Han, Yunhao Liu, Lei Hu, Jinpeng Hu...