With the rapid development of cloud computing technology,cloud services have now become a new business model for information services.The cloud server provides the IT resources required by customers in a selfservice m...With the rapid development of cloud computing technology,cloud services have now become a new business model for information services.The cloud server provides the IT resources required by customers in a selfservice manner through the network,realizing business expansion and rapid innovation.However,due to the insufficient protection of data privacy,the problem of data privacy leakage in cloud storage is threatening cloud computing.To address the problem,we propose BC-PECK,a data protection scheme based on blockchain and public key searchable encryption.Firstly,all the data is protected by the encryption algorithm.The privacy data is encrypted and stored in a cloud server,while the ciphertext index is established by a public key searchable encryption scheme and stored on the blockchain.Secondly,based on the characteristics of trusted execution of smart contract technology,a control mechanism for data accessing and sharing is given.Data transaction is automatically recorded on the blockchain,which is fairer under the premise of ensuring the privacy and security of the data sharing process.Finally,we analyzed the security and fairness of the current scheme.Through the comparison with similar schemes,we have shown the advantages of the proposed scheme.展开更多
基金This work is supported by the NSFC(Grant Nos.92046001,61671087,61962009)the Fundamental Research Funds for the Central Universities(Grant No.2019XDA02)+7 种基金the Open Foundation of Guizhou Provincial Key Laboratory of Public Big Data(Grant Nos.2018BDKFJJ018,2019BDKFJJ010,2019BDKFJJ014)the High-quality and Cutting-edge Disciplines Construction Project for Universities in Beijing(Internet Information,Communication University of China),the Open Research Project of the State Key Laboratory of Media Convergence and Communication,Communication University of China,China(Grant No.SKLMCC2020KF006)Inner Mongolia Major science and technology projects(2019ZD025)Baotou Kundulun District Science and technology plan project(YF2020013)Inner Mongolia discipline inspection and supervision big data laboratory open project fund(IMDBD2020020)the Natural Science Foundation of Inner Mongolia(2021MS0602)Huawei Technologies Co.Ltd(No.YBN2020085019)the Scientific Research Foundation of North China University of Technology。
文摘With the rapid development of cloud computing technology,cloud services have now become a new business model for information services.The cloud server provides the IT resources required by customers in a selfservice manner through the network,realizing business expansion and rapid innovation.However,due to the insufficient protection of data privacy,the problem of data privacy leakage in cloud storage is threatening cloud computing.To address the problem,we propose BC-PECK,a data protection scheme based on blockchain and public key searchable encryption.Firstly,all the data is protected by the encryption algorithm.The privacy data is encrypted and stored in a cloud server,while the ciphertext index is established by a public key searchable encryption scheme and stored on the blockchain.Secondly,based on the characteristics of trusted execution of smart contract technology,a control mechanism for data accessing and sharing is given.Data transaction is automatically recorded on the blockchain,which is fairer under the premise of ensuring the privacy and security of the data sharing process.Finally,we analyzed the security and fairness of the current scheme.Through the comparison with similar schemes,we have shown the advantages of the proposed scheme.
