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Controlled declassification based on intransitive noninterference
Publikationstyp
Conference Paper
Date Issued
2004-11
Sprache
English
Author(s)
Mantel, Heiko
First published in
Number in series
3302 LNCS
Start Page
129
End Page
145
Citation
Lecture Notes in Computer Science 3302 LNCS: 129-145 (2004)
Contribution to Conference
Publisher DOI
Scopus ID
Publisher
Springer
Traditional noninterference cannot cope with common features of secure systems like channel control, information filtering, or explicit downgrading. Recent research has addressed the derivation and use of weaker security conditions that could support such features in a language-based setting. However, a fully satisfactory solution to the problem has yet to be found. A key problem is to permit exceptions to a given security policy without permitting too much. In this article, we propose an approach that draws its underlying ideas from intransitive noninterference, a concept usually used on a more abstract specification level. Our results include a new bisimulation-based security condition that controls tightly where downgrading can occur and a sound security type system for checking this condition.
DDC Class
004: Informatik