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An Efficient File Hierarchy Attribute-Based Encryption Scheme in Cloud Computing
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An Efficient File Hierarchy Attribute-Based
Encryption Scheme in Cloud Computing
Abstract? An Efficient File Hierarchy Attribute-Based Encryption Scheme in Cloud Computing. Ciphertext-policy attribute-based encryption (CPABE) has been a preferred encryption technology to solve the challenging problem of secure data sharing in cloud computing. The shared data ?les generally have the characteristic of multilevel hierarchy, particularly in the area of healthcare and the military. However, the hierarchy structure of shared ?les hasn?t been explored in CP-ABE. In this paper, an ef?cient ?le hierarchy attribute-based encryption scheme is proposed in cloud computing. The layered access structures are integrated into a single access structure, and then the hierarchical ?les are encrypted with the integrated access structure. The ciphertext components related to attributes could be shared by the ?les. Therefore, both ciphertext storage and time cost of encryption are saved. Moreover, < Final Year Projects 2016 > the proposed scheme is proved to be secure under the standard assumption. Experimental simulation shows that the proposed scheme is highly ef?cient in terms of encryption and decryption. With the number of the ?les increasing, the advantages of our scheme become more and more conspicuous.
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| Domains | Cloud Computing |
|---|---|
| Programming Language | java |
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