Universally Composable Incoercibility

Dominique Unruh and Jörn Müller-Quade.
in Crypto 2010, LNCS vol. 6223, Springer, pp. 411-428, August 2010. Preprint on IACR ePrint 2009/520.

Abstract

We present the UC/c framework, a general definition for secure and incoercible multi-party protocols. Our framework allows to model arbitrary reactive protocol tasks (by specifying an ideal functionality) and comes with a universal composition theorem. We show that given natural setup assumptions, we can construct incoercible two-party protocols realising arbitrary functionalities (with respect to static adversaries).

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