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Lecture Notes in Computer Science
In this short paper, we present a Fiat-Shamir type transform that takes any Sigma protocol for a relation R and outputs a non-interactive zero-knowledge proof (not of knowledge) for the associated language L R , in the common reference string model. As in the Fiat-Shamir transform, we use a hash function H. However, zero-knowledge is achieved under standard assumptions in the common reference string model (without any random oracle), and soundness is achieved in the non-programmable randomdoi:10.1007/978-3-662-46494-6_5 fatcat:m5mjutpn7nda7efl3tb3yporua