计算机科学

计算机科学 ›› 2021, Vol. 48 ›› Issue (11A): 547-551.doi: 10.11896/jsjkx.201200138

• 信息安全 • 上一篇    下一篇

基于轻量级同态加密和零知识证明的区块链隐私保护方案

王瑞锦1, 唐榆程1, 裴锡凯2, 郭上铜1, 张凤荔1   

  1. 1 电子科技大学信息与软件工程学院 成都610054
    2 成都民航空管科技有限公司 成都610041
  • 出版日期:2021-11-10 发布日期:2021-11-12
  • 通讯作者: 王瑞锦(ruijinwang@uestc.edu.cn)
  • 基金资助:
    国家自然科学基金(61802033,61472064,61602096);四川省区域创新合作项目(2020YFQ0018);四川省科技计划重点研发项目(2020YFG0475,2018GZ0087,2019YJ0543,QKLY-02-2020-030);博士后基金项目(2018M643453);广东省国家重点实验室项目(2017B030314131);网络与数据安全四川省重点实验室开放课题(NDSMS201606);成都市重点研发支撑计划项目(2019-YF05-02105-GX)

Block-chain Privacy Protection Scheme Based on Lightweight Homomorphic Encryption and Zero-knowledge Proof

WANG Rui-jin1, TANG Yu-cheng1, PEI Xi-kai2, GUO Shang-tong1, ZHANG Feng-li1   

  1. 1 School of Information and Software Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China
    2 Chengdu Civil Aviation Air Traffic Control Technology Development Co.,Ltd.,Chengdu 610041,China
  • Online:2021-11-10 Published:2021-11-12
  • About author:WANG Rui-jin,born in 1980,Ph.D,associate professor.His main research interests include blockchain,edge computing,data processing,etc.
  • Supported by:
    National Natural Science Foundation of China(61802033,61472064,61602096),Regional Innovation Cooperation Project of Sichuan Province(2020YFQ0018),Key Research and Development Support Project of Sichuan Science and Technology Plan(2020YFG0475,2018GZ0087,2019YJ0543,QKLY-02-2020-030),Postdoctoral Foundation(2018M643453),National Key Laboratory Project of Guangdong Province(2017B030314131),Open project of Key Laboratory of Network and Data Security of Sichuan Province(NDSMS201606) and Key Research and Development Support Project of Chengdu(2019-YF05-02105-GX).

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摘要： 为了解决区块链隐私保护及随之所带来的效率问题,文中提出了一种基于轻量级同态加密和零知识证明的版权区块链隐私保护方案。该方案改进了同态加密算法来降低密钥生成和加密时间,同时引入零知识证明,避免无效的同态运算,经过轻量级同态加密处理后的隐私数据将以密文的形式写入区块,并由获得记账权的节点上传到区块链网络。该方案弥补了区块链网络中全部数据公开的不足,同时使效率问题得到改善。通过对该方案的安全性的分析,证明了此方案具有不可伪造、隐私数据安全等特性。通过性能仿真实验和理论推导证明,实现隐私数据以密文状态分发、共享和计算的过程中效率低下的问题得以改善,所提方案比传统数字版权模型能更有效地保护客户隐私。

关键词: 零知识证明, 轻量级同态加密, 区块链, 数字版权, 隐私保护

Abstract: In order to solve the problem of block-chain privacy protection and its efficiency,this paper proposes a privacy protection scheme based on lightweight homomorphic encryption and zero-knowledge proof.The scheme improves the homomorphic encryption algorithm to reduce the time of key generation and encryption,and introduces zero-knowledge proof to avoid invalid homomorphic operation.After the lightweight homomorphic encryption,the private data will be written into the block in the form of ciphertext,it is uploaded to the blockchain network by the node that gets the bookkeeping right.The scheme makes up for the lack of data disclosure in blockchain network and improves the efficiency.By analyzing the security of the scheme,it is proved that the scheme has the characteristics of unforgeability and privacy data security.Through the performance simulation experiment and theoretical deduction,it is proved that the low efficiency in the process of distributing,sharing and computing private data in ciphertext state has been improved,and it is more effective to protect the privacy of customers than the traditional DRM.

Key words: Blockchain, Digital rights, Lightweight homomorphic encryption, Privacy protection, Zero knowledge proof

中图分类号: 

  • TP309
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