Secrecy in untrusted networks

  • Authors:
  • Michele Bugliesi;Silvia Crafa;Amela Prelic;Vladimiro Sassone

  • Affiliations:
  • Università "Ca' Foscari", Venezia;Università "Ca' Foscari", Venezia;Max-Planck-Institut für Informatik;University of Sussex

  • Venue:
  • ICALP'03 Proceedings of the 30th international conference on Automata, languages and programming
  • Year:
  • 2003

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Abstract

We investigate the protection of migrating agents against the untrusted sites they traverse. The resulting calculus provides a formal framework to reason about protection policies and security protocols over distributed, mobile infrastructures, and aims to stand to ambients as the spi calculus stands to π. We present a type system that separates trusted and untrusted data and code, while allowing safe interactions with untrusted sites. We prove that the type system enforces a privacy property, and show the expressiveness of the calculus via examples and an encoding ofthe spi calculus.