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A Novel provable data possession Scheme Based on Geographic Location Attribute

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China Communications 2016年第9期13卷 139-150页

作者： Yaxing Zha Shoushan Luo Jianchao Bian Wei Li National Engineering Laboratory of Disaster Backup and Recovery Beijing University of Posts and TelecommunicationsBeijing 100876China Information Security Center Beijing University of Posts and TelecommunicationsBeijing 100876China

Increment of mobile cloud video motivates mobile users to utilize cloud storage service to address their demands, cloud storage provider always furnish a location-independent platform for managing user＇s data. However, mobile users wonder if their cloud video data leakage or dynamic migration to illegal service providers. In this paper, we design a novel provable data possession protocol based on data geographic location attribute, which allows data owner to auditing the integrity of their video data, which put forward an ideal choice for remote data possession checking in the mobile cloud storage. In our proposed scheme, we check out whether the video data dynamic migrate to an unspecified location （such as： overseas） by adding data geographic location attribute tag into provable data possession protocol. Moreover, we make sure the security of our proposed scheme under the Computational Diffic-Hellman assumption. The analysis and experiment results demonstrate that our proposed scheme is provably secure and efficient.

关键词： cloud storage security provable data possession geographic location security boundary CDH assumption

Towards Comprehensive provable data possession in Cloud Computing

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Wuhan University Journal of Natural Sciences 2013年第3期18卷 265-271页

作者： LI Chaoling CHEN Yue TAN Pengxu YANG Gang Institute of Cyberspace Security PLA Information Engineering University

To check the remote data integrity in cloud computing,we have proposed an efficient and full data dynamic provable data possession（PDP） scheme that uses a SN（serial number）-BN（block number） table to support data block *** this article,we first analyze and test its performance in *** result shows that our scheme is efficient with low computation,storage,and communication ***,we discuss how to extend the dynamic scheme to support other features,including public auditability,privacy preservation,fairness,and multiple-replica *** being extended,a comprehensive PDP scheme that has high efficiency and satisfies all main requirements is provided.

关键词： cloud computing provable data possession data dynamics SN-BN table

Blockchain-based Privacy-Preserving Group data Auditing with Secure User Revocation

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Computer Systems Science & Engineering 2023年第4期45卷 183-199页

作者： Yining Qi Yubo Luo Yongfeng Huang Xing Li Tsinghua University Beijing100084China Beijing National Research Center for Information Science and Technology Beijing100084China University of North Carolina at Chapel Hill North Carolina27599USA

Progress in cloud computing makes group data sharing in outsourced storage a *** join in group and share data with each other,making team work more *** new application scenario also faces data security threats,even more *** a user quit its group,remaining data block signatures must be re-signed to ensure *** researchers noticed this problem and proposed a few works to relieve computing overhead on user ***,considering the privacy and security need of group auditing,there still lacks a comprehensive solution to implement secure group user revocation,supporting identity privacy preserving and collusion attack *** at this target,we construct a concrete scheme based on ring signature and smart *** introduce linkable ring signature to build a kind of novel meta data for integrity proof enabling anonymous *** the new meta data supports secure ***,smart contracts are using for resisting possible collusion attack and malicious re-signing *** the combined effectiveness of both signature method and blockchain smart contracts,our proposal supports reliable user revocation and signature re-signing,without revealing any user identity in the whole *** and performance analysis compared with previous works prove that the proposed scheme is feasible and efficient.

关键词： provable data possession data integrity blockchain ring signature

Sec-Auditor:A Blockchain-Based data Auditing Solution for Ensuring Integrity and Semantic Correctness

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Computers, Materials & Continua 2024年第8期80卷 2121-2137页

作者： Guodong Han Hecheng Li College of Computer Qinghai Normal UniversityXining810008China

Currently,there is a growing trend among users to store their data in the ***,the cloud is vulnerable to persistent data corruption risks arising from equipment failures and hacker ***,when users perform file operations,the semantic integrity of the data can be *** both data integrity and semantic correctness has become a critical issue that requires *** introduce a pioneering solution called Sec-Auditor,the first of its kind with the ability to verify data integrity and semantic correctness simultaneously,while maintaining a constant communication cost independent of the audited data ***-Auditor also supports public auditing,enabling anyone with access to public information to conduct data *** feature makes Sec-Auditor highly adaptable to open data environments,such as the *** Sec-Auditor,users are assigned specific rules that are utilized to verify the accuracy of data ***,users are given the flexibility to update their own rules as *** conduct in-depth analyses of the correctness and security of *** also compare several important security attributes with existing schemes,demonstrating the superior properties of *** results demonstrate that even for time-consuming file upload operations,our solution is more efficient than the comparison one.

关键词： provable data possession public auditing cloud storage data integrity semantic correctness

Blockchain-Based Privacy-Preserving Public Auditing for Group Shared data

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Intelligent Automation & Soft Computing 2023年第3期35卷 2603-2618页

Cloud storage has been widely used to team work or cooperation *** owners set up groups,generating and uploading their data to cloud storage,while other users in the groups download and make use of it,which is called group data *** all kinds of cloud service,data group sharing also suffers from hardware/software failures and human *** data Posses-sion(PDP)schemes are proposed to check the integrity of data stored in cloud without ***,there are still some unmet needs lying in auditing group shared *** propose four issues necessary for a secure group shared data auditing:public veriﬁcation,identity privacy,collusion attack resis-tance and ***,none of the published work has succeeded in achieving all of these properties so *** this paper,we propose a novel block-chain-based ring signature PDP scheme for group shared data,with an instance deployed on a cloud *** design a linkable ring signature method called Linkable Homomorphic Authenticable Ring Signature(LHARS)to implement public anonymous auditing for group *** also build smart contracts to resist collusion attack in group *** security analysis and performance evalua-tion prove that our scheme is both secure and efﬁcient.

关键词： provable data possession data integrity blockchain ring signature