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CCS
2007
ACM
16 years 1 months ago
A simple and expressive semantic framework for policy composition in access control
In defining large, complex access control policies, one would like to compose sub-policies, perhaps authored by different organizations, into a single global policy. Existing po...
Glenn Bruns, Daniel S. Dantas, Michael Huth
CCS
2007
ACM
16 years 1 months ago
Privacy preserving error resilient dna searching through oblivious automata
Human Desoxyribo-Nucleic Acid (DNA) sequences offer a wealth of information that reveal, among others, predisposition to various diseases and paternity relations. The breadth and...
Juan Ramón Troncoso-Pastoriza, Stefan Katze...
CCGRID
2006
IEEE
16 years 1 months ago
A Shibboleth-Protected Privilege Management Infrastructure for e-Science Education
Simplifying access to and usage of large scale compute resources via the Grid is of critical importance to encourage the uptake of e-Research. Security is one aspect that needs to...
J. P. Watt, Oluwafemi Ajayi, Jipu Jiang, Jos Koets...
SACMAT
2006
ACM
16 years 1 months ago
The secondary and approximate authorization model and its application to Bell-LaPadula policies
We introduce the concept, model, and policy-specific algorithms for inferring new access control decisions from previous ones. Our secondary and approximate authorization model (...
Jason Crampton, Wing Leung, Konstantin Beznosov
CCS
2005
ACM
16 years 21 days ago
Tracking anonymous peer-to-peer VoIP calls on the internet
Peer-to-peer VoIP calls are becoming increasingly popular due to their advantages in cost and convenience. When these calls are encrypted from end to end and anonymized by low lat...
Xinyuan Wang, Shiping Chen, Sushil Jajodia