2000 | OriginalPaper | Chapter
Secrecy and Group Creation
Authors : Luca Cardelli, Giorgio Ghelli, Andrew D. Gordon
Published in: CONCUR 2000 — Concurrency Theory
Publisher: Springer Berlin Heidelberg
Included in: Professional Book Archive
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We add an operation of group creation to the typed π - calculus, where a group is a type for channels. Creation of fresh groups has the effect of statically preventing certain communications, and can block the accidental or malicious leakage of secrets. Intuitively, no channel belonging to a fresh group can be received by processes outside the initial scope of the group, even if those processes are untyped. We formalize this intuition by adapting a notion of secrecy introduced by Abadi, and proving a preservation of secrecy property.