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Towards Public Integrity Audition for Cloud-IoT Data Based on Blockchain

Computer Systems Science & Engineering 2022年第6期41卷 1129-1142页

作者： Hao Yan Yanan Liu Shuo Qiu Shengzhou Hu Weijian Zhang Jinyue Xia School of Network Security Jinling Institute of TechnologyNanjing211169China Fujian Provincial Key Laboratory of Network Security and Cryptology Fujian Normal UniversityFuzhou350007China Department of Mathematics and Computer Science Gannan Normal UniversityGanzhou341000China Network Security and Information Office Hohai UniversityNanjing210098China International Business Machines Corporation(IBM) New YorkNYUSA

With the rapidly developing of Internet of Things (IoT), the volume ofdata generated by IoT systems is increasing quickly. To release the pressure ofdata management and storage, more and more enterprises and individuals preferto integrate cloud service with IoT systems, in which the IoT data can be outsourced to cloud server. Since cloud service provider (CSP) is not fully trusted,a variety of methods have been proposed to deal with the problem of data integritychecking. In traditional data integrity audition schemes, the task of data auditing isusually performed by Third Party Auditor (TPA) which is assumed to be ***, in real-life TPA is not trusted as people thought. Therefore, theseschemes suffer from the underlying problem of single-point failure. Moreover,most of the traditional schemes are designed by RSA or bilinear map techniqueswhich consume heavy computation and communication cost. To overcome theseshortcomings, we propose a novel data integrity checking scheme for cloud-IoTdata based on blockchain technique and homomorphic hash. In our scheme, thetags of all data blocks are computed by a homomorphic hash function and storedin blockchain. Moreover, each step within the process of data integrity checking issigned by the performer, and the signatures are stored in blockchain through smartcontracts. As a result, each behavior for data integrity checking in our scheme canbe traced and audited which improves the security of the scheme greatly. Furthermore, batch-audition for multiple data challenges is also supported in our *** formalize the system model of our scheme and give the concrete *** performance analyses demonstrate that our proposed scheme is efficientand practical without the trust-assumption of TPA.

关键词： Blockchain cloud-IoT data integrity checking homomorphic hash function batch audition

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Certificateless broadcast multi-signature for network coding

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Frontiers of Information Technology & Electronic Engineering 2022年第9期23卷 1369-1377页

作者： Huifang Yu Zhewei QI School of Cyberspace Security Xi’an University of Posts and TelecommunicationsXi’an710121China

Network coding can save wireless network resources and is very fast in comparison with traditional *** real application scenarios,network coding is vulnerable to pollution attacks and forgery *** solve these problems,the certificateless broadcast multi-signature for network coding(NC-CLBMS)method is devised,where each source node user generates a multisignature about the message vector,and the intermediate node linearly combines the received ***-CLBMS is a multi-source multi-signature method with anti-pollution and anti-forgery advantages;moreover,it has a fixed signature length and its computation efficiency is very ***-CLBMS has extensive application prospects in unmanned aerial vehicle(UAV)communication networks,fifth-generation wireless networks,wireless sensor networks,mobile wireless networks,and Internet of Vehicles.

关键词： Network coding Certificateless multi-signature Linear combination homomorphic hash function

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