Welcome to the resource topic for 2022/1593
Title:
Proofs of discrete logarithm equality across groups
Authors: Melissa Chase, Michele Orrù, Trevor Perrin, Greg Zaverucha
Abstract:We provide a \Sigma-protocol for proving that two values committed in different groups are equal. We study our protocol in Lyubashevsky’s framework “Fiat-Shamir with aborts” (Asiacrypt’09) and offer concrete parameters for instantiating it. We explain how to use it to compose SNARKs with \Sigma-protocols, create efficient proofs of solvency on cryptocurrencies, and join of attributes across different anonymous credentials.
ePrint: https://eprint.iacr.org/2022/1593
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