Generic one round group key exchange in the standard model
Gorantla, Choudary, Boyd, Colin, Gonzalez Nieto, Juan M., & Manulis, Mark (2010) Generic one round group key exchange in the standard model. In Lecture Notes in Computer Science : Information Security and Cryptology (ICISC 2009), Springer Berlin / Heidelberg, Korean Institute of Information Security and Cryptology, Korea, pp. 1-15.
Minimizing complexity of group key exchange (GKE) protocols
is an important milestone towards their practical deployment. An interesting approach to achieve this goal is to simplify the design of GKE protocols by using generic building blocks. In this paper we investigate the possibility of founding GKE protocols based on a primitive called multi key encapsulation mechanism (mKEM) and describe advantages and limitations of this approach. In particular, we show how to design a one-round GKE protocol which satisfies the classical requirement of authenticated
key exchange (AKE) security, yet without forward secrecy.
As a result, we obtain the first one-round GKE protocol secure in the standard model. We also conduct our analysis using recent formal models that take into account both outsider and insider attacks as well as the notion of key compromise impersonation resilience (KCIR). In contrast to previous models we show how to model both outsider and insider KCIR within the definition of mutual authentication. Our analysis additionally implies that the insider security compiler by Katz and Shin from ACM CCS 2005 can be used to achieve more than what is shown in the original work, namely both outsider and insider KCIR.
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|Item Type:||Conference Paper|
|Keywords:||group key exchange, key encapsulation|
|Subjects:||Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > DATA FORMAT (080400) > Data Encryption (080402)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
Past > Institutes > Information Security Institute
|Copyright Owner:||Copyright 2010 Please consult the authors.|
|Deposited On:||23 Aug 2010 13:23|
|Last Modified:||01 Mar 2012 00:18|
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