Разработка метода сокрытия приватных данных для системы тендеров на основе технологии блокчейн

Translated title of the contribution: Development of a method for hiding private data for a blockchain-based tender system

Research output: Contribution to journalArticlepeer-review

Abstract

A tender system has been developed based on the Ethereum open blockchain platform that allows to hide the information about applications at the request for proposals stage. A new method has been created to solve the problem of information privacy in open blockchain systems using the zk-SNARK, cryptographic zero-knowledge proof protocol. The proposed method has been implemented as a cryptographic scheme based on the libsnark library. To integrate the cryptographic scheme into the system, the Ethereum C++ client has been modified | a new tenderzkp module has been added. It implements functions for creating and verifying zk-SNARK proofs. Interaction with the implemented cryptographic scheme from the smart contract codes is carried out through the new added precompiled contracts. A Solidity library has been created to work with these contracts. The JSON-RPC API of the Ethereum C++ client has been expanded to enable to call methods of the cryptographic scheme from third-party applications.

Translated title of the contributionDevelopment of a method for hiding private data for a blockchain-based tender system
Original languageRussian
Pages (from-to)63-81
Number of pages19
JournalПрикладная дискретная математика
Issue number48
DOIs
Publication statusPublished - 2020

Keywords

  • Blockchain
  • Distributed systems
  • Ethereum platform
  • Tenders
  • Zero-knowledge proof
  • Zk-SNARK
  • blockchain
  • tenders
  • zero-knowledge proof
  • distributed systems
  • zk-SNARK

State classification of scientific and technological information

  • 50.39 Network (sun)

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