计算机工程与科学2026，Vol.48Issue(8)：1388-1397,10.DOI:10.3969/j.issn.1007-130X.2026.08.006
基于无证书的多服务器高效数据审计方案
A certificateless multi-server efficient data auditing scheme
摘要
Abstract
In traditional cloud storage auditing schemes,data integrity verification on cloud servers is typically performed and audited by data owners.However,in practical applications,data users(DU)al-so need to conduct audits to ensure the integrity and correctness of the data they obtain.To this end,a certificateless multi-server efficient data auditing scheme is proposed.In the key generation phase,cer-tificateless cryptography is employed,where user public and private keys are jointly generated by the key generation center(KGC)and the user,effectively avoiding the key escrow problem.In the data up-load phase,the data owner divides the original file into blocks of a certain bit size and blinds each data block using a pseudorandom function(PRF),facilitating the extraction of partial data blocks for auditing while protecting the privacy of the original data from being disclosed.In the audit phase,a third-party auditor(TPA)issues challenges to the cloud servers on behalf of the user.The cloud servers compute proofs based on the challenge information and return them to the third-party auditor.When the proofs returned by the multiple servers are consistent with the information held by the third-party auditor,it indicates that the data audited by the data user possesses integrity and correctness.Security analysis demonstrates that the proposed scheme can effectively resist adversaries'forgery attacks.Performance analysis shows that,compared with existing certificateless auditing schemes,the proposed scheme re-duces time overhead by approximately 30%.关键词
无证书/数据审计/第三方审计/多服务器/不可伪造性Key words
certificateless/data auditing/third-party auditor/multi-server/unforgeability分类
信息技术与安全科学引用本文复制引用
冯珍,曹素珍,刘晨旭,刘静洁,庞新杰..基于无证书的多服务器高效数据审计方案[J].计算机工程与科学,2026,48(8):1388-1397,10.基金项目
国家自然科学基金(62262060,62362059) （62262060,62362059）
甘肃省教育厅产业支撑计划(2022CYZC-17,2023CYZC-09) （2022CYZC-17,2023CYZC-09）
甘肃省重点研发计划(23YFGA0081) （23YFGA0081）
