Certificateless key agreement in the standard model

Authors:
Georg Lippold;Juan González Nieto
Affiliations:
Queensland University of Technology, Brisbane, Queensland, Australia;Queensland University of Technology, Brisbane, Queensland, Australia
Venue:
AISC '10 Proceedings of the Eighth Australasian Conference on Information Security - Volume 105
Year:
2010

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Abstract

We show how to construct a certificateless key agreement protocol from the certificateless key encapsulation mechanism introduced by Lippold et al. (2009a) in ICISC 2009 using the Boyd et al. (2008) protocol from ACISP 2008. We introduce the Canetti-Krawczyk (CK) model for certificateless cryptography, give security notions for Type I and Type II adversaries in the CK model, and highlight the differences to the existing e2CK model discussed by Lippold et al. (2009b). The resulting CK model is more relaxed thus giving more power to the adversary than the original CK model.