ABSTRACT:
Secure document storage and retrieval
is one of the hottest research directions in cloud computing. Though many
searchable encryption schemes have been proposed, few of them support efficient
retrieval over the documents which are encrypted based on their attributes. In
this paper, a hierarchical attribute-based encryption scheme is first designed
for a document collection. A set of documents can be encrypted together if they
share an integrated access structure. Compared with the ciphertext-policy
attribute-based encryption (CP-ABE) schemes, both the ciphertext storage space
and time costs of encryption/decryption are saved. Then, an index structure
named attribute-based retrieval features (ARF) tree is constructed for the
document collection based on the TF-IDF model and the documents’ attributes. A
depth-first search algorithm for the ARF tree is designed to improve the search
efficiency which can be further improved by parallel computing. Except for the
document collections, our scheme can be also applied to other datasets by
modifying the ARF tree slightly. A thorough analysis and a series of
experiments are performed to illustrate the security and efficiency of the
proposed scheme.
SYSTEM REQUIREMENTS:
HARDWARE REQUIREMENTS:
·
System : Pentium Dual Core.
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Hard Disk : 120 GB.
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Monitor : 15’’ LED
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Input Devices : Keyboard, Mouse
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Ram : 1 GB
SOFTWARE REQUIREMENTS:
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Operating system : Windows 7.
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Coding Language : JAVA/J2EE
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Tool : Netbeans 7.2.1
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Database : MYSQL
REFERENCE:
Na Wang, Junsong
Fu, Bharat K. Bhargava, Fellow, IEEE, Jiwen Zeng,
“Efficient Retrieval over Documents Encrypted by Attributes in Cloud
Computing”, IEEE Transactions on Information Forensics and Security, 2018.