An Intrusion-Tolerant Security Server for an Open Distributed System.
Laurent Blain, Yves Deswarte · 1990
This paper describes a new approach for security in open distributed systems. This approach is currently developed in the framework of the Delta 4 project. After a few reminders about two existing distributed security architectures, the proposed "intrusion-tolerant" approach is specified. It is based on a fragmentation-scattering technique applied to a security server running on several security sites. These sites are such that intrusions into a number of sites less than a given threshold have no consequence on the global security. The different security services provided are then presented together with a proposed multi-categories discretionary policy.