Cryptology ePrint Archive: Report 1997/002

Round-Optimal Zero-Knowledge Arguments Based on any One-Way Function

Mihir Bellare and Markus Jakobsson and Moti Yung

Abstract: We fill a gap in the theory of zero-knowledge protocols by presenting NP-arguments that achieve negligible error probability and computational zero-knowledge in four rounds of interaction, assuming only the existence of a one-way function. This result is optimal in the sense that four rounds and a one-way function are each individually necessary to achieve a negligible error zero-knowledge argument for NP.

Category / Keywords: Zero-knowledge, one-way functions, arguments, round

Publication Info: Appeared in the THEORY OF CRYPTOGRAPHY LIBRARY and has been included in the ePrint Archive.

Date: received February 26th, 1997.

Contact author: mihir at cs ucsd edu

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