网络与信息安全学报 ›› 2020, Vol. 6 ›› Issue (4): 23-36.doi: 10.11959/j.issn.2096-109x.2020043

• 专栏:基于区块链的多方可信协作应用探索 • 上一篇    

高效安全的可审计盲混币服务方案

乔康(),汤红波,游伟,李海涛   

  1. 信息工程大学,河南 郑州 450001
  • 修回日期:2020-04-03 出版日期:2020-08-01 发布日期:2020-08-13
  • 作者简介:乔康(1994- ),男,四川邛崃人,信息工程大学硕士生,主要研究方向为移动通信网络安全和区块链技术|汤红波(1968- ),男,湖北孝感人,信息工程大学教授、博士生导师,主要研究方向为移动通信网络、新型网络体系结构|游伟(1984- ),男,江西丰城人,博士,信息工程大学讲师,主要研究方向为密码学和移动通信网络|李海涛(1982- ),男,山东泰安人,信息工程大学讲师,主要主要研究方向为网络数据挖掘
  • 基金资助:
    国家重点研发计划网络空间专项(2016YFB0801605);国家自然科学基金创新群体项目(61521003);国家自然科学基金(61801515)

Efficient and safe auditable mixed-coin service scheme based on blind signature

Kang QIAO(),Hongbo TANG,Wei YOU,Haitao LI   

  1. Information Engineering University,Zhengzhou 450001,China
  • Revised:2020-04-03 Online:2020-08-01 Published:2020-08-13
  • Supported by:
    The National Key R&D Program Cyberspace Special(2016YFB0801605);The National Natural Science Foundation Innovation Group Project(61521003);The National Natural Science Foundation of China(61801515)

摘要:

混币服务能够为区块链隐私泄露问题提供解决方案,但仍然面临效率瓶颈和安全风险,为进一步提升混币服务的效率和安全防护能力,提出一种高效安全的可审计盲混币服务方案。该方案首先增加了审计措施,在传统的混币模型基础上,增加审计区块链,以记录用户和混币器行为,实现可追溯和可问责;然后利用椭圆曲线算法构造盲签名,替代现有研究中基于双线性对或 RSA 的盲签名算法;最后基于可审计的混币模型和新构造的盲签名算法,提出可审计的盲混币服务协议。仿真分析表明,所提方案在提供隐私保护的同时,具有可审计性、抗盗窃攻击等6种安全特性;在同等安全强度下,较对比方案,所提方法能够有效降低计算开销和存储开销。

关键词: 区块链, 可审计, 混币服务, 隐私保护

Abstract:

The mixed-coin service can provide solutions for the privacy problem of blockchain,but it still faces efficiency bottlenecks and security risks.To further improve the efficiency and security protection of the mixed-coin service,an efficient and safe auditable mixed-coin service scheme based on blind signature was proposed.Firstly,this scheme added audit measures.It added an audit blockchain to the traditional mix-coin model to record the behavior of users and mixers,achieving traceability and accountability.Then,this method used elliptic curves algorithm to construct blind signatures instead of blind signature schemes based on bilinear pairs or RSA.Finally,this scheme proposed an auditable blind mix-coin service agreement based on the auditable mix-coin model and the blind signature algorithm based on elliptic curve.Simulation analysis shows that the proposed scheme has six security features,such as auditability and anti-theft attack,while providing privacy protection.Under the same security intensity,the proposed scheme can effectively reduce the computational overhead and storage overhead.

Key words: blockchain, auditable, mixed-coin, privacy protection

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