—Access control is one of the most important security mechanisms in cloud computing. Attribute-based access control provides a flexible approach that allows data owners to integ...
Yan Zhu, Hongxin Hu, Gail-Joon Ahn, Dijiang Huang,...
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. ...
Privacy is today an important concern for both data providers and data users. Data generalization can provide significant protection of an individual’s privacy, which means the...
—The paper first discusses motivations why taking into account location information in authentication and access control is important. The paper then surveys current approaches t...
Abstract. We consider the interpretations of notions of access control (permissions, interdictions, obligations, and user rights) as run-time properties of information systems spec...