Pindex: Private multi-linked index for encrypted document retrieval.

Cryptographic cloud storage is used to make optimal use of the cloud storage infrastructure to outsource sensitive and mission-critical data. The continuous growth of encrypted data outsourced to cloud storage requires continuous updating. Attacks like file-injection are reported to compromise confi...

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Autores principales:	A John Prakash, B Lydia Elizabeth
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/64910d431c344ae7bcf133998fb6483a
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spelling	oai:doaj.org-article:64910d431c344ae7bcf133998fb6483a2021-12-02T20:17:41ZPindex: Private multi-linked index for encrypted document retrieval.1932-620310.1371/journal.pone.0256223https://doaj.org/article/64910d431c344ae7bcf133998fb6483a2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256223https://doaj.org/toc/1932-6203Cryptographic cloud storage is used to make optimal use of the cloud storage infrastructure to outsource sensitive and mission-critical data. The continuous growth of encrypted data outsourced to cloud storage requires continuous updating. Attacks like file-injection are reported to compromise confidentiality of the user as a consequence of information leakage during update. It is required that dynamic schemes provide forward privacy guarantees. Updates should not leak information to the untrusted server regarding the previously issued queries. Therefore, the challenge is to design an efficient searchable encryption scheme with dynamic updates and forward privacy guarantees. In this paper, a novel private multi-linked dynamic index for encrypted document retrieval namely Pindex is proposed. The multi-linked dynamic index is constructed using probabilistic homomorphic encryption mechanism and secret orthogonal vectors. Full security proofs for correctness and forward privacy in the random oracle model is provided. Experiments on real world Enron dataset demonstrates that our construction is practical and efficient. The security and performance analysis of Pindex shows that the dynamic multi-linked index guarantees forward privacy without significant loss of efficiency.A John PrakashB Lydia ElizabethPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0256223 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q A John Prakash B Lydia Elizabeth Pindex: Private multi-linked index for encrypted document retrieval.
description	Cryptographic cloud storage is used to make optimal use of the cloud storage infrastructure to outsource sensitive and mission-critical data. The continuous growth of encrypted data outsourced to cloud storage requires continuous updating. Attacks like file-injection are reported to compromise confidentiality of the user as a consequence of information leakage during update. It is required that dynamic schemes provide forward privacy guarantees. Updates should not leak information to the untrusted server regarding the previously issued queries. Therefore, the challenge is to design an efficient searchable encryption scheme with dynamic updates and forward privacy guarantees. In this paper, a novel private multi-linked dynamic index for encrypted document retrieval namely Pindex is proposed. The multi-linked dynamic index is constructed using probabilistic homomorphic encryption mechanism and secret orthogonal vectors. Full security proofs for correctness and forward privacy in the random oracle model is provided. Experiments on real world Enron dataset demonstrates that our construction is practical and efficient. The security and performance analysis of Pindex shows that the dynamic multi-linked index guarantees forward privacy without significant loss of efficiency.
format	article
author	A John Prakash B Lydia Elizabeth
author_facet	A John Prakash B Lydia Elizabeth
author_sort	A John Prakash
title	Pindex: Private multi-linked index for encrypted document retrieval.
title_short	Pindex: Private multi-linked index for encrypted document retrieval.
title_full	Pindex: Private multi-linked index for encrypted document retrieval.
title_fullStr	Pindex: Private multi-linked index for encrypted document retrieval.
title_full_unstemmed	Pindex: Private multi-linked index for encrypted document retrieval.
title_sort	pindex: private multi-linked index for encrypted document retrieval.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/64910d431c344ae7bcf133998fb6483a
work_keys_str_mv	AT ajohnprakash pindexprivatemultilinkedindexforencrypteddocumentretrieval AT blydiaelizabeth pindexprivatemultilinkedindexforencrypteddocumentretrieval
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Pindex: Private multi-linked index for encrypted document retrieval.

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