Polynomial Runtime in Simulatability Definitions

Polynomial Runtime in Simulatability DefinitionsD. Hofheinz, J. Müller-Quade, and D. Unruh (CSFW 2005).  [publisher's version | eprint]

Abstract: We elaborate on the problem of polynomial runtime in simulatability definitions for multi-party computation. First, the need for a new definition is demonstrated by showing which problems occur with common definitions of polynomial runtime. Then, we give a definition which captures in an intuitive manner what it means for a protocol or an adversary to have polynomial runtime.

We show that this notion is suitable for simulatability definitions for multi-party computation. In particular, a composition theorem is shown for this notion.

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