2020 | OriginalPaper | Chapter
Non-interactive Composition of Sigma-Protocols via Share-then-Hash
Authors : Masayuki Abe, Miguel Ambrona, Andrej Bogdanov, Miyako Ohkubo, Alon Rosen
Published in: Advances in Cryptology – ASIACRYPT 2020
Publisher: Springer International Publishing
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Abstract
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the proof contains a single atomic transcript per statement \(x_i\),
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it suffices that the atomic protocols are \({\kappa }\)-special sound for \({\kappa }\ge 2\),
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when compiled to a signature scheme using the Fiat-Shamir heuristic, its unforgeability can be proved in the non-programmable random oracle model.