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One-time capabilities for authorizations without trust

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2 Author(s)
Bussard, L. ; Inst. Eurocom, Sophia Antipolis, France ; Molva, R.

This paper introduces and solves a security problem of pervasive computing: how to define authorizations for off-line interactions when trust relationships among entities do not exist. A new type of capability is proposed to assure that user interactions are not traceable and that misbehaving users automatically lose some money they deposited as a guarantee of their loyalty. The solution inspired by electronic cash is based on a new version of the cut-and-choose protocol adapted for open environments.

Published in:

Pervasive Computing and Communications, 2004. PerCom 2004. Proceedings of the Second IEEE Annual Conference on

Date of Conference:

14-17 March 2004