Identification in infrastructureless networks

Authors:
Gina Kounga;Thomas Walter
Affiliations:
DoCoMo Communications Laboratories Europe GmbH, Munich, Germany;DoCoMo Communications Laboratories Europe GmbH, Munich, Germany
Venue:
ESAS'06 Proceedings of the Third European conference on Security and Privacy in Ad-Hoc and Sensor Networks
Year:
2006

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Abstract

Confidential communications require entities to mutually authenticate and establish secure communication channels, where the latter requires secret keys to be established between entities. Both —mutual authentication and secure communication— can be achieved by non–revoked public key certificates. However, in infrastructureless networks —such as ad hoc networks—, online trusted third parties (TTP) may not be present that can distribute the required information to verify the revocation status of a certificate. This can prevent confidentiality from being provided. In this paper we define a protocol which permits nodes in an ad hoc network without a shared secret key and without guaranteed access to a TTP, firstly, to mutually authenticate and, secondly, to verify the revocation status of a certificate.