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政大機構典藏 > 資訊學院 > 資訊科學系 > 期刊論文 > Item 140.119/112443

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/112443

Title:	Somewhat semantic secure public key encryption with filtered-equality-test in the standard model and its extension to searchable encryption
Authors:	左瑞麟 Huang, Kaibin Tso, Ray-Lin Chen, Yu Chi
Contributors:	資科系
Keywords:	Public key cryptography;Security of data;Semantic Web;Semantics;Testing;Ciphertexts;Equality tests;Searchable encryptions;Semantic security;Standard model;Cryptography
Date:	2017-11
Issue Date:	2017-08-31 13:48:24 (UTC+8)
Abstract:	Public key encryption with equality test (PKE-ET) is a public key encryption with an extra functionality, so-called `equality test`. An authorized third party can verify the equivalence between two ciphertexts encrypted under different public keys, while the decryption keeps unavailable. However, the privacy of most existing PKE-ET schemes drop to one-way security owing to the `equality test` functionality. In this work, we propose a novel architecture called filtered equality test (FET), which `filtered` denotes only few receiver-selected messages can be equality tested. In such model, we propose an equality test scheme, PKE-FET, which is the first one to be proved (somewhat) semantic secure. The concrete PKE-FET scheme and its rigorous security proof in the standard model are proposed. Furthermore, FET is also applied to construct a searchable encryption named PE-MKS, which is inherently proved semantic secure (so called the indistinguishability against chosen keyword attacks) in the standard model.
Relation:	Journal of Computer and System Sciences, 89, 400-409
Data Type:	article
DOI 連結:	http://dx.doi.org/10.1016/j.jcss.2017.06.001
DOI:	10.1016/j.jcss.2017.06.001
Appears in Collections:	[資訊科學系] 期刊論文

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