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A Lightweight ABE Security Protection Scheme in Cloud Environment Based on Attribute Weight

Computers, Materials & Continua 2023年第8期76卷 1929-1946页

作者： Lihong Guo Jie Yang Haitao Wu Department of Information and Communications Engineering Nanjing Institute of TechnologyNanjing211167China

Attribute-based encryption(ABE)is a technique used to encrypt data,it has the flexibility of access control,high security,and resistance to collusion attacks,and especially it is used in cloud security ***,a large number of bilinear mappings are used in ABE,and the calculation of bilinear pairing is *** there is the problem of low *** the other hand,the decryption key is not uniquely associated with personal identification information,if the decryption key is maliciously sold,ABE is unable to achieve accountability for the *** practical applications,shared message requires hierarchical sharing in most cases,in this paper,we present a message security hierarchy ABE scheme for this ***,attributes were grouped and weighted according to the importance of attributes,and then an access structure based on a threshold tree was constructed according to attribute *** method saved the computing time for decryption while ensuring security and on-demand access to information for *** addition,with the help of computing power in the cloud,two-step decryption was used to complete the access,which relieved the computing and storage burden on the client ***,we simulated and tested the scheme based on CP-ABE,and selected different security levels to test its *** security proof and the experimental simulation result showthat the proposed scheme has high efficiency and good performance,and the solution implements hierarchical access to the shared message.

关键词： Attribute-based encryption cloud security message hierarchy attribute weight access control

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