History-sensitive versus future-sensitive approaches to security in distributed systems

Details History-sensitive versus future-sensitive approaches to security in distributed systems History-sensitive versus future-sensitive approaches to security in distributed systems

2010-10-27

arxiv.org/abs/1010.5567v1

EPTCS 38, 2010, pp. 29-43

Computer Science

Cryptography and Security

In Proceedings ICE 2010, arXiv:1010.5308

Scientific paper

10.4204/EPTCS.38.5

We consider the use of aspect-oriented techniques as a flexible way to deal with security policies in distributed systems. Recent work suggests to use aspects for analysing the future behaviour of programs and to make access control decisions based on this; this gives the flavour of dealing with information flow rather than mere access control. We show in this paper that it is beneficial to augment this approach with history-based components as is the traditional approach in reference monitor-based approaches to mandatory access control. Our developments are performed in an aspect-oriented coordination language aiming to describe the Bell-LaPadula policy as elegantly as possible. Furthermore, the resulting language has the capability of combining both history- and future-sensitive policies, providing even more flexibility and power.

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