Toward Practical Authorization-dependent User Obligation Systems

Date
2009-12
Authors
Pontual, Murillo
Chowdhury, Omar
Winsborough, William H.
Yu, Ting
Irwin, Keith
Journal Title
Journal ISSN
Volume Title
Publisher
UTSA Department of Computer Science
Abstract

Many authorization system models include some notion of obligation. Little attention has been given to user obligations that depend on and affect authorizations. However, to be usable, the system must ensure users have the authorizations they need when their obligations must be performed. Prior work in this area introduced accountability properties that ensure failure to fulfill obligations is not due to lack of required authorizations. That work presented inconclusive and purely theoretical results concerning the feasibility of maintaining accountability in practice. The results of the current paper include algorithms and performance analysis that support the thesis that maintaining accountability in a reference monitor is reasonable in many applications.

Description
Keywords
security, theory, obligations, RBAC, policy, authorization systems, accountability
Citation
Department
Computer Science