[Resource Topic] 2021/1068: A Simple Post-Quantum Non-Interactive Zero-Knowledge Proof from Garbled Circuits

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Title:
A Simple Post-Quantum Non-Interactive Zero-Knowledge Proof from Garbled Circuits

Authors: Hongrui Cui, Kaiyi Zhang

Abstract:

We construct a simple public-coin zero-knowledge proof system solely based on symmetric primitives, from which we can apply the Fiat-Shamir heuristic to make it non-interactive. Our construction can be regarded as a simplified cut-and-choose-based malicious secure twoparty computation for the zero-knowledge functionality. Our protocol is suitable for pedagogical purpose for its simplicity (code is only 728 lines).

ePrint: https://eprint.iacr.org/2021/1068

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