Many-out-of-Many Proofs and Applications to Anonymous Zether

Many-out-of-Many Proofs and Applications to Anonymous Zether

Cybersecurity Seminars Online seminar
Thursday, 27 May 2021
11 am - 12 pm (AEST)

This talk describes a new zero-knowledge proof protocol called "many-out-of-many proofs", which generalizes the classic "one-out-of-many proofs" of Groth and Kohlweiss. As an application of this technique, I give an efficient protocol for the Anonymous Zether private payment construction of Bünz et al., which is especially well suited for mobile private payments.

The talk is based on the paper:
Diamond, B. E. 'Many-out-of-Many Proofs and Applications to Anonymous Zether', IEEE S&P, 2021.

About the speaker

Benjamin Diamond
Staff Applied Cryptographer, Coinbase

Benjamin Diamond earned his PhD in Mathematics in 2017 from Johns Hopkins University, where he studied algebraic geometry. Since then, he has worked as a cryptographer in industry; he spent three years at J.P. Morgan before moving to Coinbase. His interests are in algebraic, combinatorial, and post-quantum cryptography.

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