Searchable encryption with randomized ciphertext and randomized keyword search

被引：0
|
作者：
Calderini, Marco [1 ]
Longo, Riccardo [1 ,2 ]
Sala, Massimiliano [1 ]
Villa, Irene [1 ,3 ]
机构：
[1] Univ Trento, Dept Math, Via Sommar 14, I-38123 Povo, Trento, Italy
[2] Fdn Bruno Kessler, Ctr Cybersecur, Via Sommar 18, I-38123 Povo, Trento, Italy
[3] Univ Genoa, Dept Math, Excellence Dept 2023 2027, Via Dodecaneso 35, I-16146 Genoa, Italy
来源：
JOURNAL OF MATHEMATICAL CRYPTOLOGY | 2024年 / 18卷 / 01期
关键词：
searchable encryption; PAEKS scheme; cloud cryptography; bilinear pairings; PUBLIC-KEY ENCRYPTION; GUESSING ATTACKS; AUTHENTICATED ENCRYPTION; SCHEMES; SECURE;
D O I：
10.1515/jmc-2023-0029
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
The notion of public-key encryption with keyword search (PEKS) was introduced to search over encrypted data without performing any decryption. In this article, we propose a PEKS scheme in which both the encrypted keyword and the trapdoor are randomized so that the cloud server is not able to recognize identical queries a priori. Our scheme is Ciphertext-Indistinguishabiltity secure in the single-user setting and Trapdoor-Indistinguishability secure in the multi-user setting with a stronger security, i.e., with multi-trapdoor.
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页数：14
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