A Practical NIZK Argument for Confidential Transactions over Account-Model Blockchain

Shunli Ma,Xiang Xie,Debiao He,Jiang Zhang,Yi Deng,Mengqiu Bai

doi:10.1007/978-3-030-62576-4_12

A Practical NIZK Argument for Confidential Transactions over Account-Model Blockchain

Shunli Ma, Xiang Xie + Show 4 more

https://doi.org/10.1007/978-3-030-62576-4_12

Copy DOI

Publication Date: Jan 1, 2020

Citations: 2

Affiliation: Institute of Information Engineering, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Wuhan University, State Key Laboratory of Cryptology

#Common Reference String #Non-interactive Zero-knowledge + Show 8 more

Abstract
Full-Text PDF
Similar Papers

Abstract

We propose a novel non-interactive zero-knowledge (NIZK) argument for confidential transactions. Our NIZK argument provides a highly practical prover against other existing works, in which proof generation and verification times are at the same level. Our NIZK argument is perfect zero-knowledge in the common reference string model, with its soundness holds in the random oracle model. Based on the NIZK argument, we construct a confidential transaction smart contract (CTSC) scheme which enables transferring coins between users confidentially and automatically over the account-model blockchain. Furthermore, We provide a formal security definitions of such a primitive: confidentiality and transaction soundness, along with a security proof of the construction.

Full Text