ASICS : authenticated key exchange security incorporating certification systems. / Boyd, Colin; Cremers, Cas; Feltz, Michele; Paterson, Kenneth; Poettering, Bertram; Stebila, Douglas .

In: International Journal of Information Security, Vol. 16, No. 2, 04.2017, p. 151-171.

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Abstract

Most security models for authenticated key exchange (AKE) do not explicitly model the associated certification system, which includes the certification authority and its behaviour. However, there are several well-known and realistic attacks on AKE protocols which exploit various forms of malicious key registration and which therefore lie outside the scope of these models. We provide the first systematic analysis of AKE security incorporating certification systems. We define a family of security models that, in addition to allowing different sets of standard AKE adversary queries, also permit the adversary to register arbitrary bitstrings as keys. For this model family, we prove generic results that enable the design and verification of protocols that achieve security even if some keys have been produced maliciously. Our approach is applicable to a wide range of models and protocols; as a concrete illustration of its power, we apply it to the CMQV protocol in the natural strengthening of the eCK model to the ASICS setting.
Original languageEnglish
Pages (from-to)151-171
Number of pages21
JournalInternational Journal of Information Security
Volume16
Issue number2
Early online date4 Jan 2016
DOIs
Publication statusPublished - Apr 2017

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This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

ID: 27873354