Formal Modelling of a Usable Identity Management Solution for Virtual Organisations

Details Formal Modelling of a Usable Identity Management Solution for Virtual Organisations Formal Modelling of a Usable Identity Management Solution for Virtual Organisations

2010-01-27

arxiv.org/abs/1001.5050v1

EPTCS 16, 2010, pp. 41-50

Computer Science

Software Engineering

Scientific paper

10.4204/EPTCS.16.4

This paper attempts to accurately model security requirements for computational grid environments with particular focus on authentication. We introduce the Audited Credential Delegation (ACD) architecture as a solution to some of the virtual organisations identity management usability problems. The approach uses two complementary models: one is state based, described in Z notation, and the other is event-based, expressed in the Process Algebra of Hoare's Communicating Sequential Processes (CSP). The former will be used to capture the state of the WS and to model back-end operations on it whereas the latter will be used to model behavior, and in particular, front-end interactions and communications. The modelling helps to clearly and precisely understand functional and security requirements and provide a basis for verifying that the system meets its intended requirements.

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