Modular Preservation of Safety Properties by Cookie-Based DoS-Protection Wrappers

  • Authors:
  • Rohit Chadha;Carl A. Gunter;Jose Meseguer;Ravinder Shankesi;Mahesh Viswanathan

  • Affiliations:
  • Dept. of Computer Science, University of Illinois at Urbana-Champaign,;Dept. of Computer Science, University of Illinois at Urbana-Champaign,;Dept. of Computer Science, University of Illinois at Urbana-Champaign,;Dept. of Computer Science, University of Illinois at Urbana-Champaign,;Dept. of Computer Science, University of Illinois at Urbana-Champaign,

  • Venue:
  • FMOODS '08 Proceedings of the 10th IFIP WG 6.1 international conference on Formal Methods for Open Object-Based Distributed Systems
  • Year:
  • 2008

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Abstract

Current research on verifying security properties of communication protocols has focused on proving integrity and confidentiality using models that include a strong Man-in-the-Middle (MitM) threat. By contrast, protection measures against Denial-of-Service (DoS) must assume a weaker model in which an adversary has only limited ability to interfere with network communications. In this paper we demonstrate a modular reasoning framework in which a protocol $\mathcal{P}$ that satisfies certain security properties can be assured to retain these properties after it is "wrapped" in a protocol $\mathcal{W}[\mathcal{P}]$ that adds DoS protection. This modular wrapping is based on the "onion skin" model of actor reflection. In particular, we show how a common DoS protection mechanism based on cookies can be applied to a protocol while provably preserving safety properties (including confidentiality and integrity) that it was shown to have in a MitM threat model.