Blockchain Data Controlled Sharing Scheme Based on Proxy Re-Encryption

GUO Qing; TIAN You-liang; WAN Liang

doi:10.12263/DZXB.20210785

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Blockchain Data Controlled Sharing Scheme Based on Proxy Re-Encryption

PAPERS | 更新时间：2025-12-08

- Blockchain Data Controlled Sharing Scheme Based on Proxy Re-Encryption
- ACTA ELECTRONICA SINICA Vol. 51, Issue 2, Pages: 477-488(2023)
- 作者机构：
  
  1.贵州大学计算机科学与技术学院，贵州贵阳 550025
  2.贵州省公共大数据重点实验室，贵州贵阳 550025
  3.贵州大学密码学与数据安全研究所，贵州贵阳 550025
- 作者简介：
- 基金信息：
- DOI：10.12263/DZXB.20210785
  CLC： TP309.7;
- Received：24 June 2021，
  
  Revised：2022-01-13，
  
  Published：25 February 2023
- 稿件说明：
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郭庆,田有亮,万良.基于代理重加密的区块链数据受控共享方案[J].电子学报,2023,51(02):477-488.

GUO Qing,TIAN You-liang,WAN Liang.Blockchain Data Controlled Sharing Scheme Based on Proxy Re-Encryption[J].ACTA ELECTRONICA SINICA,2023,51(02):477-488.
郭庆,田有亮,万良.基于代理重加密的区块链数据受控共享方案[J].电子学报,2023,51(02):477-488. DOI： 10.12263/DZXB.20210785.

GUO Qing,TIAN You-liang,WAN Liang.Blockchain Data Controlled Sharing Scheme Based on Proxy Re-Encryption[J].ACTA ELECTRONICA SINICA,2023,51(02):477-488. DOI： 10.12263/DZXB.20210785.

摘要

区块链以分布式共享全局账本的形式存储交易数据，数据共享难以实现隐私保护和可用性之间的平衡，现有的区块链数据共享方案在进行隐私保护的同时可用性较低，有效实现区块链数据访问权限的动态调整是一个挑战性问题.为此，本文提出基于代理重加密的区块链数据受控共享方案.首先，基于SM2构造代理重加密算法，并借此设计区块链数据受控共享方案，利用代理重加密保护交易数据隐私实现数据安全共享.其次，提出用户权限动态调整机制，区块链节点分工代理并对重加密密钥参数分割管理，实现用户访问权限确定性更新，交易数据的可见性得到动态调整.最后，安全性和性能分析表明，本方案可以在保护交易隐私的同时，实现区块链数据动态共享，并且在计算开销方面具有优势，更好地适用于区块链数据受控共享.

Abstract

The blockchain stores transaction data in the form of a distributed shared global ledger and it is difficult to achieve a balance between privacy protection and availability in data sharing. The existing blockchain data sharing schemes have low availability while protecting privacy and effectively realizing the dynamic adjustment of blockchain data access permissions is a challenging problem. To this end

this paper proposes a blockchain data controlled sharing scheme based on proxy re-encryption. Firstly

based on SM2

the proxy re-encryption algorithm is constructed to design a blockchain data controlled sharing scheme

using proxy re-encryption to protect the privacy of transaction data to achieve data secure sharing. Secondly

a dynamic adjustment mechanism of user permissions is proposed that the blockchain nodes division of labor agent and the re-encryption key parameters are dividedly managed to realize the assured update of user access rights

so that the visibility of the blockchain data can be dynamically adjusted. Finally

the security and performance analysis show that the scheme can realize the dynamic sharing of blockchain data while protecting transaction privacy

and has advantages in computing overhead

better suitable for the controlled sharing of blockchain data.

关键词

Keywords

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