MULKASE: a novel approach for key-aggregate searchable encryption for multi-owner data

Mukti PADHYA; Devesh C. JINWALA

doi:10.1631/FITEE.1800192

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MULKASE: a novel approach for key-aggregate searchable encryption for multi-owner data

Regular Papers | Updated：2022-05-19

- MULKASE: a novel approach for key-aggregate searchable encryption for multi-owner data
- MULKASE:一种针对多个所有者数据的新型密钥聚合可搜索加密方法
- Frontiers of Information Technology & Electronic Engineering Vol. 20, Issue 12, Pages: 1717-1748(2019)
- Affiliations：
  
  Department of Computer Engineering, Sardar Vallabhbhai National Institute of Technology, Surat 394000, India
  Department of Computer Science and Engineering, Indian Institute of Technology, Jammu 180001, India
- Author bio：
  
  Mukti PADHYA, E-mail: mukti.padhya@yahoo.in
  [ "Devesh C. JINWALA, E-mail: dcjinwala@gmail.com" ]
- Funds：
- DOI：10.1631/FITEE.1800192
  CLC： TP309
- Received：28 March 2018，
  
  Revised：2019-;8-12，
  
  Published Online：29 October 2019，
  
  Published：2019-12
- Accepted：
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Mukti PADHYA, Devesh C. JINWALA. MULKASE: a novel approach for key-aggregate searchable encryption for multi-owner data[J]. Frontiers of Information Technology & Electronic Engineering, 2019, 20(12): 1717-1748.
DOI：

Mukti PADHYA, Devesh C. JINWALA. MULKASE: a novel approach for key-aggregate searchable encryption for multi-owner data[J]. Frontiers of Information Technology & Electronic Engineering, 2019, 20(12): 1717-1748. DOI： 10.1631/FITEE.1800192.

摘要

最新密钥聚合可搜索加密（KASE）尝试将搜索加密数据与支持数据所有者相结合，共享一个聚合的可搜索密钥；该密钥授权用户搜索数据。相应地，用户需提交一个单一聚合陷门至云端，在共享数据集上执行关键词搜索。然而，现有KASE方法不支持使用单一聚合陷门在由多个所有者共享的数据上搜索。因此，本文提出MULKASE方法，该方法允许用户使用单一陷门在由多用户拥有的不同数据记录上搜索。在MULKASE方法中，聚合密钥尺寸不依赖于数据所有者拥有的文档数量，即使外包密文数量超出预定限值，聚合密钥尺寸维持不变。安全性分析证实MULKASE方法对所选消息攻击和关键词攻击安全，亦证实该方法对交叉配对攻击安全，且提供查询隐私。理论和实验分析表明MULKASE方法性能优于现有KASE方法。文中还演示了MULKASE方法如何执行联合搜索。

Abstract

Recent attempts at key-aggregate searchable encryption (KASE) combine the advantages of searching encrypted data with support for data owners to share an aggregate searchable key with a user delegating search rights to a set of data. A user

in turn

is required to submit only one single aggregate trapdoor to the cloud to perform a keyword search across the shared set of data. However

the existing KASE methods do not support searching through data that are shared by multiple owners using a single aggregate trapdoor. Therefore

we propose a MULKASE method that allows a user to search across different data records owned by multiple users using a single trapdoor. In MULKASE

the size of the aggregate key is independent of the number of documents held by a data owner. The size of an aggregate key remains constant even though the number of outsourced ciphertexts goes beyond the predefined limit. Security analysis proves that MULKASE is secure against chosen message attacks and chosen keyword attacks. In addition

the security analysis confirms that MULKASE is secure against cross-pairing attacks and provides query privacy. Theoretical and empirical analyses show that MULKASE performs better than the existing KASE methods. We also illustrate how MULKASE can carry out federated searches.

关键词

Keywords

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