For any nontrivial system or a group of such systems to operate harmoniously, there must exist protection policies, which outline what are allowed, as well as what should not be done. The complexity of the protection policies is proportional to the complexity of the systems involved and the connections between those systems. Due to continuous development of new technologies, especially the information technology, the complexity of most systems, as well as that of the connections between them, constantly increases. Consequently, there is a need for a framework in which such complex protection policies can be systematically analyzed. / A new concept of Connected Protection Structures (CPSs) is developed based on the original capability-pass-permit model of dynamic protection structure of Kohout and Gaines. The structures are defined in terms of fuzzy relations. CPSs provide a needed framework for the analysis of protection policies of a given group of connecting systems. A stand-alone system can also be dealt with by the CPSs as a special case. The main objective of the analysis is to uncover any possible harmful actions that are allowed but should not be performed, i.e. potential violations. CPSs take into account both internal protection policies which govern interactions within one system, and external protection policies which govern interactions across connecting systems. Computational techniques that lead to the determination of potential violations, and a software that implements the techniques are developed. Ways to construct CPSs from given protection policies, as well as a suggestion on how to incorporate the resulting CPSs into a protection mechanism for a generic application, are also presented. / Source: Dissertation Abstracts International, Volume: 52-10, Section: B, page: 5377. / Major Professor: Ladislav J. Kohout. / Thesis (Ph.D.)--The Florida State University, 1991.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_76526 |
| Contributors | Santiprabhob, Pratit., Florida State University |
| Source Sets | Florida State University |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | 221 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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