ATTRIBUTE-BASED ENCRYPTION SCHEME IN CLOUD COMPUTING USING EFFICIENT FILE HIERARCHY

ATTRIBUTE-BASED ENCRYPTION SCHEME IN CLOUD COMPUTING USING EFFICIENT FILE HIERARCHY
Author(s):
M. Spoorthika, B. Srinivasulu
Keywords:
Attribute-based encryption, cipher text policy, fine-grained access control, re-encryption
Abstract
Cipher text-policy attribute-based encryption (CP-ABE) has been a preferred encryption technology to solve the challenging problem of secure data sharing in cloud computing. The shared data files generally have the characteristic of multilevel hierarchy, particularly in the area of healthcare and the military. However, the hierarchy structure of shared files has not been explored in CP-ABE. In this paper, an efficient file 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 files are encrypted with the integrated access Structure. The cipher text components related to attributes could be shared by the files. Therefore, both cipher text storage and time cost of encryption is saved. Moreover, the proposed scheme is proved to be secure under the standard assumption. Experimental simulation shows that the proposed scheme is highly efficient in terms of encryption and decryption. With the number of the files increasing, the advantages of our scheme become more and more conspicuous.
Article Details
Unique Paper ID: 145080 Publication Volume & Issue: Volume 4, Issue 7 Page(s): 210 - 215
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