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CCS
2007
ACM
15 years 11 months ago
Efficient policy analysis for administrative role based access control
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...
Scott D. Stoller, Ping Yang, C. R. Ramakrishnan, M...
SP
2010
IEEE
178views Security Privacy» more  SP 2010»
15 years 11 months ago
Overcoming an Untrusted Computing Base: Detecting and Removing Malicious Hardware Automatically
The computer systems security arms race between attackers and defenders has largely taken place in the domain of software systems, but as hardware complexity and design processes ...
Matthew Hicks, Murph Finnicum, Samuel T. King, Mil...
ESORICS
2009
Springer
15 years 11 months ago
Declassification with Explicit Reference Points
Noninterference requires that public outputs of a program must be completely independent from secrets. While this ensures that secrets cannot be leaked, it is too restrictive for m...
Alexander Lux, Heiko Mantel
CCS
2010
ACM
15 years 10 months ago
Scene tagging: image-based CAPTCHA using image composition and object relationships
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...
Peter Matthews, Cliff Changchun Zou
CCS
2008
ACM
15 years 9 months ago
On spatio-temporal constraints and inheritance in role-based access control
Pervasive computing environments have created a requirement for spatial- and temporal-aware access control systems. Although temporal, spatial and spatio-temporal role-based acces...
Liang Chen, Jason Crampton