This paper presents the results of a survey of requirements for attribute aggregation in authorisation systems, gathered from an international community of security professionals....
Accountability mechanisms, which rely on after-the-fact verification, are an attractive means to enforce authorization policies. In this paper, we describe an operational model of ...
Radha Jagadeesan, Alan Jeffrey, Corin Pitcher, Jam...
The role-based access control (RBAC) has significantly simplified the management of users and permissions in computing systems. In dynamic environments, systems are usually unde...
Threshold public-key encryption (TPKE) allows a set of users to decrypt a ciphertext if a given threshold of authorized users cooperate. Existing TPKE schemes suffer from either lo...
Bo Qin, Qianhong Wu, Lei Zhang, Josep Domingo-Ferr...
This presentation follows up the talk last year to WINFORMS (The Washington Institute for Operations Research and The Management Sciences) in which an approach developed for the a...