Efficient semantic-based multiuser search scheme

doi:10.16511/j.cnki.qhdxxb.2020.22.45

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Abstract Current cloud storage searchable encryption schemes have mostly been developed for multiuser environments with multi-keyword searches, but research on these schemes have not considered the influence of the semantics on the search results. This paper presents an efficient semantic-based multiuser search scheme using two cloud servers to ensure efficient searches. One cloud server matches the trapdoor and generates results that match the semantics while the other searches for the most relevant files and returns them to the user. This coordination reduces the server load by sending the semantic tree search to the cloud server which uses the trapdoor strategy. The semantic tree is encrypted to ensure the key information security. Tests show that this scheme is effective, resists the collusion attack, provides semantic privacy, and is more efficient than current related schemes.

Keywords searchable encryption semantic tree multiuser cloud storage

Issue Date: 19 October 2021

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	CAO Laicheng
	WU Qirui
	WANG Yafei
	WU Rong
	GUO Xian

Cite this article:

CAO Laicheng,WU Qirui,WANG Yafei, et al. Efficient semantic-based multiuser search scheme[J]. Journal of Tsinghua University(Science and Technology), 2021, 61(11): 1228-1233.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2020.22.45 OR http://jst.tsinghuajournals.com/EN/Y2021/V61/I11/1228

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