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| 1 | Identity-based public auditing for cloud storage systems against malicious auditors via blockchain显示文摘Cloud storage systems provide users with convenient data storage services, which allow users to access and update outsourced data remotely. However, these cloud storage services do not guarantee the integrity of the data that users store in the cloud. Thus, public auditing is necessary, in which a third-party auditor(TPA) is delegated to audit the integrity of the outsourced data. This system allows users to enjoy on-demand cloud storage services without the burden of continually auditing their data integrity. However,certain TPAs might deviate from the public auditing protocol and/or collude with the cloud servers. In this article, we propose an identity-based public auditing(IBPA) scheme for cloud storage systems. In IBPA,the nonces in a blockchain are employed to construct unpredictable and easily verified challenge messages,thereby preventing the forging of auditing results by malicious TPAs to deceive users. Users need only to verify the TPAs' auditing results in batches to ensure the integrity of their data that are stored in the cloud.A detailed security analysis shows that IBPA can preserve data integrity against various attacks. In addition,a comprehensive performance evaluation demonstrates that IBPA is feasible and efficient. | Jingting XUE Chunxiang XU Jining ZHAO Jianfeng MA | 2019 | Science China(Information Sciences)2019，62，3： | 17 |
| 2 | Building a Cloud-Based Energy Storage System through Digital Transformation of Distributed Backup Battery in Mobile Base Stations显示文摘Battery energy storage systems(ESS) have been widely used in mobile base stations(BS) as the main backup power source. Due to the large number of base stations, massive distributed ESSs have largely stayed in idle and very difficult to achieve high asset utilization. In recent years, the fast-paced development of digital energy storage(DES) technology has revolutionized the traditional operation and maintenance of ESSs by transforming them into digital assets, further enabling battery energy storage services, raising up a new way to achieve a much higher utilization of such kind of largely idle ESS resources. In this paper, the disruptive DES technology will be introduced and its application under the context of mobile BSs will be studied, and then a cloud-based energy storage(CES) platform is proposed based on a large scale distributed DESs to provide a new cyber-enabled energy storage service to the local utility company. A real-world case study shows the effectiveness and efficiency of the CES platform. | Song Ci Yanglin Zhou Yuan Xu Xingjian Diao Junwei Wang | 2020 | China Communications2020，17，4： | 10 |
| 3 | NC-MACPABE: Non-centered multi-authority proxy re-encryption based on CP-ABE for cloud storage systems显示文摘The cloud storage service cannot be completely trusted because of the separation of data management and ownership, leading to the difficulty of data privacy protection. In order to protect the privacy of data on untrusted servers of cloud storage, a novel multi-authority access control scheme without a trustworthy central authority has been proposed based on CP-ABE for cloud storage systems, called non-centered multi-authority proxy re-encryption based on the cipher-text policy attribute-based encryption(NC-MACPABE). NC-MACPABE optimizes the weighted access structure(WAS) allowing different levels of operation on the same file in cloud storage system. The concept of identity dyeing is introduced to improve the users' information privacy further. The re-encryption algorithm is improved in the scheme so that the data owner can revoke user's access right in a more flexible way. The scheme is proved to be secure. And the experimental results also show that removing the central authority can resolve the existing performance bottleneck in the multi-authority architecture with a central authority, which significantly improves user experience when a large number of users apply for accesses to the cloud storage system at the same time. | 徐小龙 张栖桐 周静岚 | 2017 | Journal of Central South University2017，24，4： | 9 |
| 4 | Cloud Storage Security Assessment Through Equilibrium Analysis显示文摘With ever greater amounts of data stored in cloud servers, data security and privacy issues have become increasingly important. Public cloud storage providers are semi-trustworthy because they may not have adequate security mechanisms to protect user data from being stolen or misused. Therefore, it is crucial for cloud users to evaluate the security of cloud storage providers. However, existing security assessment methods mainly focus on external security risks without considering the trustworthiness of cloud providers. In addition, the widely used thirdparty mediators are assumed to be trusted and we are not aware of any work that considers the security of these mediators. This study fills these gaps by assessing the security of public cloud storage providers and third-party mediators through equilibrium analysis. More specifically, we conduct evaluations on a series of game models between public cloud storage providers and users to thoroughly analyze the security of different service scenarios.Using our proposed security assessment, users can determine the risk of whether their privacy data is likely to be hacked by the cloud service providers;the cloud service providers can also decide on strategies to make their services more trustworthy. An experimental study of 32 users verified our method and indicated its potential for real service improvement. | Yuzhao Wu Yongqiang Lyu Yuanchun Shi | 2019 | Tsinghua Science and Technology2019，24，6： | 4 |
| 5 | Enabling Efficient Batch Updating Verification for Multi-versioned Data in Cloud Storage显示文摘Existing dynamic data possession verification schemes not only suffer from low efficiency of rebalancing its Merkle Hash tree(MHT) when executing data updating, but also lack effective mechanism to verify multi-version files. Aiming at these problems, this paper propose a new data structure called Rank-based multi-version Merkle AVL tree(RBMV-MAT) to achieve efficient batch updating verification for multi-version data.RBMV-MAT uses a special lock and relaxed balance to decrease the frequency of rebalacing operations. The experimental results show that our efficient scheme has better efficiency than those of existing methods. | QI Yining TANG Xin HUANG Yongfeng | 2019 | Chinese Journal of Electronics2019，28，2： | 3 |
| 6 | Efficient and secure auditing scheme for outsourced big data with dynamicity in cloud显示文摘Big data offers significant benefits; however, security and privacy problems must be considered,especially with regard to outsourced big data. Auditing outsourced big data is an important factor in security and privacy. However, most of the existing auditing techniques are not suitable for outsourced big data due to their high computational and communication costs at the auditor and the data owner (DO) side. In this paper, we propose an efficient auditing scheme for outsourced big data based on algebraic signatures and an XOR-homomorphic function, that can achieve numerous advantages, such as fewer challenges and proofs,non-block verification, data privacy preservation, and lower computational and communication costs. The proposed scheme enables a trusted third-party auditor, on behalf of DOs, to audit the outsourced data in a cloud. Thus, reducing the computational burden on the DOs. Subsequently, we construct a new data structure called a Record Table(RTable) and extend the basic auditing scheme to support the data dynamic operations. As our extended scheme does not use public key encryption, the entire process of updating the data incurs only a small computational and communication overhead with regard to the auditor, the DOs,and the cloud server. Finally, the proposed basic scheme is proved secure under the security model against various attacks. Analysis of the performance shows that both our basic scheme and extended scheme are highly efficient. | Qingqing GAN Xiaoming WANG Xuefeng FANG | 2018 | Science China(Information Sciences)2018，61，12： | 3 |
| 7 | Secure Data Transfer and Deletion from Counting Bloom Filter in Cloud Computing显示文摘With the rapid development of cloud storage, an increasing number of data owners prefer to outsource their data to the cloud server, which can greatly reduce the local storage overhead. Because different cloud service providers offer distinct quality of data storage service, e.g., security, reliability, access speed and prices,cloud data transfer has become a fundamental requirement of the data owner to change the cloud service providers.Hence, how to securely migrate the data from one cloud to another and permanently delete the transferred data from the original cloud becomes a primary concern of data owners. To solve this problem, we construct a new counting Bloom filter-based scheme in this paper. The proposed scheme not only can achieve secure data transfer but also can realize permanent data deletion. Additionally,the proposed scheme can satisfy the public verifiability without requiring any trusted third party. Finally, we also develop a simulation implementation that demonstrates the practicality and efficiency of our proposal. | YANG Changsong TAO Xiaoling ZHAO Feng WANG Yong | 2020 | Chinese Journal of Electronics2020，29，2： | 2 |
| 8 | A Weighted Threshold Secret Sharing Scheme for Remote Sensing Images Based on Chinese Remainder Theorem显示文摘The recent advances in remote sensing and computer techniques give birth to the explosive growth of remote sensing images.The emergence of cloud storage has brought new opportunities for storage and management of massive remote sensing images with its large storage space,cost savings.However,the openness of cloud brings challenges for image data security.In this paper,we propose a weighted image sharing scheme to ensure the security of remote sensing in cloud environment,which takes the weights of participants(i.e.,cloud service providers)into consideration.An extended Mignotte sequence is constructed according to the weights of participants,and we can generate image shadow shares based on the hash value which can be obtained from gray value of remote sensing images.Then we store the shadows in every cloud service provider,respectively.At last,we restore the remote sensing image based on the Chinese Remainder Theorem.Experimental results show the proposed scheme can effectively realize the secure storage of remote sensing images in the cloud.The experiment also shows that no matter weight values,each service providers only needs to save one share,which simplifies the management and usage,it also reduces the transmission of secret information,strengthens the security and practicality of this scheme. | Qi He Shui Yu Huifang Xu Jia Liu Dongmei Huang Guohua Liu Fangqin Xu Yanling Du | 2019 | Computers, Materials & Continua2019，，2： | 2 |
| 9 | ACS-HCA:An Access Control Scheme Under Hierarchical Cryptography Architecture显示文摘Binding access policies to data,Ciphertext-policy attribute-based encryption(CP-ABE)enables data access control to be independent from a certain application and lets users face data directly. It is regarded as one of the most suitable access control methods in cloud storage system and gets the attention of extensive researches. In those researches, Hierarchical cryptography architecture(HCA) is often applied to improve the efficiency of the system. There exist two open issues: illegal leakage of symmetric keys and low efficiency of revocation of an attribute of a user. We propose an Access control scheme under Hierarchical cryptography architecture(ACS-HCA). In this scheme,key derivation mechanism and forward derivation function are used to avoid the leakage of symmetric keys, All-orNothing transform is used to prevent the illegal reuse of symmetric keys, and attribute revocation is realized without re-issuing other users' private keys. Analyses and simulations demonstrate that our scheme sustains less encrypting cost on each owner and less decrypting cost on each user, but gain high efficiency in revocation of an attribute of a user. | SHI Jiaoli HUANG Chuanhe HE Kai SHEN Xieyang | 2019 | Chinese Journal of Electronics2019，28，1： | 1 |
| 10 | Generic user revocation systems for attribute-based encryption in cloud storage显示文摘Cloud-based storage is a service model for businesses and individual users that involves paid or free storage resources. This service model enables on-demand storage capacity and management to users anywhere via the Internet. Because most cloud storage is provided by third-party service providers, the trust required for the cloud storage providers and the shared multi-tenant environment present special challenges for data protection and access control. Attribute-based encryption(ABE) not only protects data secrecy, but also has ciphertexts or decryption keys associated with fine-grained access policies that are automatically enforced during the decryption process. This enforcement puts data access under control at each data item level. However, ABE schemes have practical limitations on dynamic user revocation. In this paper, we propose two generic user revocation systems for ABE with user privacy protection, user revocation via ciphertext re-encryption(UR-CRE) and user revocation via cloud storage providers(UR-CSP), which work with any type of ABE scheme to dynamically revoke users. | Genlang CHEN Zhiqian XU Hai JIANG Kuan-ching LI | 2018 | Frontiers of Information Technology & Electronic Engineering2018，19，11： | 1 |
| 11 | An efficient iO-based data integrity verification scheme for cloud storage显示文摘Dear editor,With the advent of big data,an increasing number of people are storing their data on remote cloud servers.Cloud storage services enable users to flexibly maintain and access their data via mobile or wireless networks.However,despite these benefits,cloud storage deprives users of physical control over their data,which poses new challenges in data security(1–4)Data integrity protection is one of the most important of these security chal-lenges. | Lixue SUN Chunxiang XU Yuan ZHANG Kefei CHEN | 2019 | Science China(Information Sciences)2019，62，5： | 1 |
| 12 | IDRMS: an improved dynamic replication management scheme for cloud storage显示文摘Cloud storage is getting more and more popular as a new trend of data management. Data replication has been widely used to increase the data availability in cloud storage systems. However,most data replication schemes do not fully consider cost and latency issues when users need large amounts of remote replicas. We present an improved dynamic replication management scheme( IDRMS). By adding a prediction model,the optimal allocation of replicas among the cloud storage nodes is determined that the total communication cost and network delay are minimal. When the local data block is frequently requested,the data replicas can be moved to a closer or cheaper node for cost reduction and increased efficiency. Moreover,we replace the B+tree with the B*tree to speed up the search and reduce workload with the lowest blocking probability. We define the value of popularity to adjust the placement of replicas dynamically. We divide the data nodes in the network into hot nodes and cool nodes. By changing to visit cool nodes instead of hot nodes,we can balance the workload in the network. Finally,we implement IDRMS in Matlab simulation platform and simulation results demonstrate that IDRMS outperforms other replication management schemes in terms of communication cost and load balancing for large-scale cloud storage. | Wang Jun Wang Yue Wang Menglin Liu Junjie | 2018 | The Journal of China Universities of Posts and Telecommunications2018，25，4： | 0 |
| 13 | Study on the P2P Cloud Storage Architecture Based on Semantic Hypergraph显示文摘Cloud storage has the characteristics of distributed and virtual, and it makes the ownership rights and management rights of users data separated. The master-slave architecture of cloud storage has a problem of single point failure. In this paper, we provide a cloud storage architecture model based on Semantic equivalence. According to semantic matching degree, this architecture divides the nodes into node cluster by creating semantic tree and maintains system routing through semantic hypergraph. Through simulation experiments show that dividing network into semantic can enhance scalability and flexibility of the system, and it can improve the efficiency of network organization and the security of cloud storage system, at the same time, it can also reduce the cloud data storage and the delay of reading time. | SONG Ningning LIN Ruijie AN Xingshuo GONG Chao YAO Zhiyong | 2015 | China Communications2015，12，S2： | 0 |
| 14 | Which Aspects of Big Data Usage is Creating Information Security Concern?显示文摘The present research study proposed some of the big data usage perspectives for testing either they have a role in creating information security concern or not.The researchers first dig out some of the theoretical support for filling the gap regarding big data and information security bridge that was previously noted in literature.The present researches approached big data analytics manager in the Pakistani banking industries for validating the proposed model.The data were analyzed using SPSS Andrews approach due to the nature of the research study.The findings revealed that the proposed perspective including perceived benefits,cloud storage,and online behavior monitoring should be tested in the future studies by proposing their indirect affect in the creation of information security issue.The study brings a new aspect in literature of management regarding big data usage practices. | Hira Batool DU Rong | 2018 | Proceedings of Business and Economic Studies2018，1，4： | 0 |
| 15 | Generic attribute revocation systems for attribute-based encryption in cloud storage显示文摘Attribute-based encryption(ABE) has been a preferred encryption technology to solve the problems of data protection and access control, especially when the cloud storage is provided by third-party service providers.ABE can put data access under control at each data item level. However, ABE schemes have practical limitations on dynamic attribute revocation. We propose a generic attribute revocation system for ABE with user privacy protection. The attribute revocation ABE(AR-ABE) system can work with any type of ABE scheme to dynamically revoke any number of attributes. | Genlang CHEN Zhiqian XU Jia-jian ZHANG Guo-jun WANG Hai JIANG Miao-qing HUANG | 2019 | Frontiers of Information Technology & Electronic Engineering2019，20，6： | 0 |
| 16 | A secure data sharing scheme with cheating detection based on Chaum-Pedersen protocol for cloud storage显示文摘With the development of cloud computing technology, data can be outsourced to the cloud and conveniently shared among users. However, in many circumstances, users may have concerns about the reliability and integrity of their data. It is crucial to provide data sharing services that satisfy these security requirements. We introduce a reliable and secure data sharing scheme, using the threshold secret sharing technique and the ChaumPedersen zero-knowledge proof. The proposed scheme is not only effective and flexible, but also able to achieve the semantic security property. Moreover, our scheme is capable of ensuring accountability of users’ decryption keys as well as cheater identification if some users behave dishonestly. The efficiency analysis shows that the proposed scheme has a better performance in terms of computational cost, compared with the related work. It is particularly suitable for application to protect users’ medical insurance data over the cloud. | Xin WANG Bo YANG Zhe XIA Hong-xia HOU | 2019 | Frontiers of Information Technology & Electronic Engineering2019，20，6： | 0 |
| 17 | A Survey on Cloud Security显示文摘Cloud computing system packages infrastructures,applications and other resources as services,and delivers the services to market in an elastic and fast way.The significant advantages of cloud computing,e.g.,scalability,elasticity,and pay-per-use,bring it considerable commercial values.Nevertheless,owing to the new application scenario,e.g.,multi-tenant,cloud computing is encountering potential security risks.This paper reviews the state-of-art research in cloud security.According to the attack levels,it analyzes four kinds of attacks in the cloud,i.e.,network-based attacks,VM-based attacks,storage-based attacks,and application-based attacks.The countermeasures and corresponding techniques are then introduced.Furthermore,this paper also discusses an innovative and promising solution for cloud security by dynamically changing system configuration. | WU Chunming LIU Qianjun LI Yuwei CHENG Qiumei ZHOU Haifeng | 2017 | ZTE Communications2017，15，2： | 0 |
| 18 | Cloud Storage Technology显示文摘Under the traditional model,enterprises to establish a set of IT systems not only need to buy hardware and other infrastructure,but also to buy software licenses,the need for specialized staff maintenance.The scale of the enterprise will continue to upgrade the various hardware and software facilities to meet the needs.For enterprises,computers and other hardware and software itself is not what they really need,they are just to complete the work,to provide effi cient tools only.For individuals,we usually use the computer to install a lot of software,and many software is a fee,the user is not often used to buy the software is very uneconomical.We only need to pay a small amount of ‘rent'to‘rent'to these software services for us to save a lot of money to buy hardware and software.Just as we use electricity every day,but we are not every self-generator,it is provided by the power plant;we use tap water every day,but we do not have every well,it is provided by the water plant.This model is great enough to save resources and facilitate our lives.The face of the computer to bring us the troubles,we can like the use of water and electricity as the use of computer resources?These ideas eventually led to the generation of clouds and cloud computing. | Yuhuan Qiu Xiaofeng Zhao Xuhua Zhao | 2017 | Big Data and Cloud Innovation2017，1，1： | 0 |
| 19 | A Selection Algorithm of Service Providers for Optimized Data Placement in Multi-Cloud Storage Environment显示文摘The benefits of cloud storage come along with challenges and open issues about availability of services, vendor lock-in and data security, etc. One solution to mitigate the problems is the multi-cloud storage, where the selection of service providers is a key point. In this paper, an algorithm that can select optimal provider subset for data placement among a set of providers in multicloud storage architecture based on IDA is proposed, designed to achieve good tradeoff among storage cost, algorithm cost, vendor lock-in, transmission performance and data availability. Experiments demonstrate that it is efficient and accurate to find optimal solutions in reasonable amount of time, using parameters taken from real cloud providers. | Wenbin Yao Liang Lu | 2015 | 国际计算机前沿大会会议论文集2015，，1： | 0 |
| 20 | Blockchain-Based Trusted Electronic Records Preservation in Cloud Storage显示文摘Cloud storage represents the trend of intensive,scale and specialization of information technology,which has changed the technical architecture and implementation method of electronic records management.Moreover,it will provide a convenient way to generate more advanced and efficient management of the electronic data records.However,in cloud storage environment,it is difficult to guarantee the trustworthiness of electronic records,which results in a series of severe challenges to electronic records management.Starting from the definition and specification of electronic records,this paper firstly analyzes the requirements of the trustworthiness in cloud storage during their long-term preservation according to the information security theory and subdivides the trustworthiness into the authenticity,integrity,usability,and reliability of electronic records in cloud storage.Moreover,this paper proposes the technology framework of preservation for trusted electronic records.Also,the technology of blockchain,proofs of retrievability,the open archival information system model and erasure code are adopted to protect these four security attributes,to guarantee the credibility of the electronic record. | Zhiliang Deng Yongjun Ren Yepeng Liu Xiang Yin Zixuan Shen Hye-Jin Kim | 2019 | Computers, Materials & Continua2019，，1： | 0 |
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