• V.Swathi
• A.Sri Harsha
• J.Sri Sai Jyothsna
• N.Vinay
• S.Sai Dutt

Retrieving documents from cloud in an efficient and secure manner is one of the important issues in cloud computing. There are many searchable encryption schemes already proposed, few of them support efficient retrieval over the documents which are encrypted based on their attributes. Previously single keyword Boolean search schemes, single keyword ranked search schemes and multi-keyword Boolean search schemes are proposed to retrieve the documents from cloud. Now, the idea is to enhance this process by considering a hierarchical attribute-based encryption scheme designed for document collection. Compared with the ciphertext-policy attribute-based encryption (CP-ABE) schemes, both the ciphertext storage space and time costs of encryption/decryption are saved. Here a structure named attribute-based retrieval features (ARF) tree is constructed for the document collection based on document’s attributes. An index is used for this ARF tree to perform searching and retrieving operations. A depth-first search algorithm for the ARF tree is designed to improve the search efficiency which can be further improved by parallel computing. This scheme can also be applied to other datasets by modifying the ARF tree slightly. A series of experiments are performed to illustrate the security and efficiency of the proposed scheme.

"PRAGMATIC REVIVAL OF DOCUMENTS IN CLOUD COMPUTING UTILIZING ATTRIBUTE-BASED ENCRYPTION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.278-282, March-2019, Available :http://www.jetir.org/papers/JETIR1903C39.pdf

"PRAGMATIC REVIVAL OF DOCUMENTS IN CLOUD COMPUTING UTILIZING ATTRIBUTE-BASED ENCRYPTION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp278-282, March-2019, Available at : http://www.jetir.org/papers/JETIR1903C39.pdf