Brostoff, Sacha and Sassea, M.Angela and Chadwick, David W. and Cunningham, James and Mbanaso, Uche and Otenko, O. (2004) RBAC What? Development of a Role-Based Access Control Policy Writing Tool for E-Scientists. In: Workshop on Grid Security Practice and Experience, Oxford, UK.
A lightweight role-based access control policy authoring tool was developed for e-Scientists, a community for which access policies have to be implemented for an increasingly heterogeneous group of local and remote users. Two fundamental problems were identified: (1) lack of understanding of what the policy components are (i.e. how authorization policies are structured), and (2) lack of understanding of the underlying policy paradigm (i.e. what should go into the policy, and what should be left out). Conceptual design (CD) techniques were used to revise the user interface (UI) labels so that e-Scientists and developers were better able to describe access policy components from labels, and match labels with components (t = 6.28, df = 7, p = 0.000 two-tailed). CD, instructional text, bubble help, UI behaviour and alert boxes were used to shape users' models of the policy paradigm. The final prototype improved users' efficiency and effectiveness by more than doubling the speed with which expert users could write authorization policies, and facilitating users without specialist security knowledge to overcome the policy paradigm and components problems, enabling them to complete 80% of basic and 75% of advanced authorization policy-writing tasks in a usability trial.
|Item Type:||Conference or workshop item (Paper)|
|Subjects:||Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Computing|
|Depositing User:||Mark Wheadon|
|Date Deposited:||24 Nov 2008 18:01|
|Last Modified:||06 Sep 2011 01:23|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/14120 (The current URI for this page, for reference purposes)|
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