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 individua...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 trustful.However, 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 scheme.We formalize the system model of our scheme and give the concrete construction.Detailed performance analyses demonstrate that our proposed scheme is efficientand practical without the trust-assumption of TPA.展开更多
Network coding can save wireless network resources and is very fast in comparison with traditional routing.In real application scenarios,network coding is vulnerable to pollution attacks and forgery attacks.To solve t...Network coding can save wireless network resources and is very fast in comparison with traditional routing.In real application scenarios,network coding is vulnerable to pollution attacks and forgery attacks.To 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 data.NC-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 high.NC-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.展开更多
基金supported by Program for Scientific Research Foundation for Talented Scholars of Jinling Institute of Technology(No.JIT-B-202031)H.Yan received it and the URLs is www.jit.edu.cn.H.Yan also received the Opening Foundation of Fujian Provincial Key Laboratory of Network Security and Cryptology Research Fund of Fujian Normal University(NSCL-KF2021-02)and the URLs is www.fjnu.edu.cn.Y.Liu received the funding of the National Natural Science Foundation of China(No.61902163,)the URLs is www.nsfc.gov.cn.S.Hu received the funding of the Science and Technology Project of Education Department in Jiangxi Province(No.GJJ201402)and the URLs is www.gnnu.cn.
文摘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 trustful.However, 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 scheme.We formalize the system model of our scheme and give the concrete construction.Detailed performance analyses demonstrate that our proposed scheme is efficientand practical without the trust-assumption of TPA.
基金Project supported by the Key Project of Natural Science Basis Research Plan of Shaanxi Province,China(No.2020JZ-54)。
文摘Network coding can save wireless network resources and is very fast in comparison with traditional routing.In real application scenarios,network coding is vulnerable to pollution attacks and forgery attacks.To 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 data.NC-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 high.NC-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.
