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IJNSEC
2007
121views more  IJNSEC 2007»
15 years 6 months ago
Data Hiding in a Kind of PDF Texts for Secret Communication
In this paper, we present a novel steganographic technique for hiding data in a kind of PDF texts. We first point out the secret channels in a kind of PDF English texts, which ar...
Shangping Zhong, Xueqi Cheng, Tierui Chen
SACMAT
2010
ACM
15 years 4 months ago
Enforcing spatial constraints for mobile RBAC systems
Proposed models for spatially-aware extensions of role-based access control (RBAC) combine the administrative and security advantages of RBAC with the dynamic nature of mobile and...
Michael S. Kirkpatrick, Elisa Bertino
CCS
2010
ACM
15 years 4 months ago
Adjustable autonomy for cross-domain entitlement decisions
Cross-domain information exchange is a growing problem, as business and governmental organizations increasingly need to integrate their information systems with those of partially...
Jacob Beal, Jonathan Webb, Michael Atighetchi
TCOS
2010
15 years 1 months ago
J-PAKE: Authenticated Key Exchange without PKI
Password Authenticated Key Exchange (PAKE) is one of the important topics in cryptography. It aims to address a practical security problem: how to establish secure communication be...
Feng Hao, Peter Ryan
ICWS
2008
IEEE
15 years 8 months ago
A Theory of Role Composition
We study the access control integration problem for web services. Organizations frequently use many services, each with its own access control policies, that must interoperate whi...
Jeffrey Fischer, Rupak Majumdar