A blockchain-based privacy-preserving and collusion-resistant scheme(PPCR)for double auctions

作     者：Xuedan Jia Liangmin Wang Ke Cheng Pujie Jing Xiangmei Song Xuedan Jia;Liangmin Wang;Ke Cheng;Pujie Jing;Xiangmei Song

作者机构：School of Computer Science and Communication EngineeringJiangsu UniversityZhenjiang 212013China School of Cyber Science and EngineeringSoutheast UniversityNanjing 211102China School of Computer Science and TechnologyXidian UniversityXi’an 710071China 

出 版 物：《Digital Communications and Networks》 (数字通信与网络(英文版))

年 卷 期：2025年第11卷第1期

页      面：116-125页

核心收录：

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 0839[工学-网络空间安全] 08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Key R&D Program of China (No.2020YFB1005500) the Leading-edge Technology Program of Jiangsu Natural Science Foundation (No.BK20202001) the Fundamental Research Funds for the Central Universities (No.XJSJ23040) the Postdoctoral Science Foundation of Jiangsu Province (No.2021K596C) 

主　　题：Privacy protection Collusion resistance Secure protocol Blockchain-based double auction Dispute resolution 

摘      要：Electronic auctions(e-auctions)remove the physical limitations of traditional auctions and bring this mechanism to the general ***,most e-auction schemes involve a trusted auctioneer,which is not always credible in *** studies have applied cryptography tools to solve this problem by distributing trust,but they ignore the existence of *** this paper,a blockchain-based Privacy-Preserving and Collusion-Resistant scheme(PPCR)for double auctions is proposed by employing both cryptography and blockchain technology,which is the first decentralized and collusion-resistant double auction scheme that guarantees bidder anonymity and bid privacy.A two-server-based auction framework is designed to support off-chain allocation with privacy preservation and on-chain dispute resolution for collusion resistance.A Dispute Resolution agreement(DR)is provided to the auctioneer to prove that they have conducted the auction correctly and the result is fair and *** addition,a Concise Dispute Resolution protocol(CDR)is designed to handle situations where the number of accused winners is small,significantly reducing the computation cost of dispute *** experimental results confirm that PPCR can indeed achieve efficient collusion resistance and verifiability of auction results with low on-chain and off-chain computational overhead.