3544 search results - page 357 / 709 » Information Security in Open Systems |
174
Voted
CCS
2009
ACM
16 years 7 months ago
2009
ACM
This paper proposes a D-algebra to compose decisions from multiple access control policies. Compared to other algebrabased approaches aimed at policy composition, D-algebra is the...
217
Voted
SACMAT
2009
ACM
16 years 1 months ago
2009
ACM
The existence of on-line social networks that include person specific information creates interesting opportunities for various applications ranging from marketing to community o...
216
click to vote
CCS
2007
ACM
15 years 11 months ago
2007
ACM
Administrative RBAC (ARBAC) policies specify how Role-Based Access Control (RBAC) policies may be changed by each administrator. It is often difficult to fully understand the effe...
151
Voted
CCS
2010
ACM
15 years 10 months ago
2010
ACM
In this paper, we propose a new form of image-based CAPTCHA we term "scene tagging". It tests the ability to recognize a relationship between multiple objects in an imag...
178
Voted
CCS
2008
ACM
15 years 8 months ago
2008
ACM
Pervasive computing environments have created a requirement for spatial- and temporal-aware access control systems. Although temporal, spatial and spatio-temporal role-based acces...