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International Association for Cryptologic Research (IACR)
Abstract
We present an enhanced version of the Kate, Zaverucha and Goldberg polynomial commitment scheme [KZG, ASIACRYPT 2010] where a single group element can be an opening proof for multiple polynomials each evaluated at a different arbitrary subset of points.
As a sample application we ``plug in\u27\u27 this scheme into the PLONK proving system[GWC, 2019] to obtain improved proof size and prover run time at the expense of additional verifier G2β operations and pairings, and additional G2β SRS elements.
We also present a second scheme where the proof consists of two group elements and the verifier complexity is better than previously known batched verification methods for [KZG]
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