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Polymorphic programming languages have been adapted for constructing distributed access control systems, where a program represents a proof of eligibility according to a given policy. As a security requirement, it is typically stated that the programs of such languages should satisfy noninterference. However, this property has not been defined and proven semantically. In this paper, we first propose...
Providing security at programming language level has received enormous attention in recent years. FABLE is an outstanding language intended to enforce the security policies specified by programmers. In doing so, it employs a rich type system whereby only a program with appropriate labels and policy-function calls can type-check. In this paper, we present a constraint-based type system that enables...
Classical logics have already been proposed as a means to specify and implement access control systems. In this paper, we first show that some facets of access control render these logics inadequate. In particular, when used as an inference engine, they are insufficient for decision making on the basis of imperfect information, a situation that occurs frequently in new computing paradigms. In addition,...
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