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A Privacy-Preserving Method for Symmetric Searchable Encryption

A privacy protection and symmetric technology, which is applied in the privacy protection field of symmetric searchable encryption, can solve the problems of low efficiency and security of cloud storage encryption methods, and achieve the effect of ensuring verifiability, improving efficiency, and improving query efficiency

Active Publication Date: 2022-03-25
福州掌中云科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is the problem of low efficiency and security of existing cloud storage encryption methods, and provides a privacy protection method with symmetrical searchable encryption, which has the characteristics of high efficiency, safety and verifiability

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  • A Privacy-Preserving Method for Symmetric Searchable Encryption
  • A Privacy-Preserving Method for Symmetric Searchable Encryption
  • A Privacy-Preserving Method for Symmetric Searchable Encryption

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples.

[0032] The present invention is an efficient, safe and verifiable symmetrical searchable encryption privacy protection method based on the data owner-user-cloud server tripartite model. The data owner encrypts the data, and then stores the encrypted data on the cloud server. Users authorized by the data owner can query the data on the cloud server, and the cloud server returns the query result to the user. When the user receives the query result, the user needs to verify the integrity and freshness of the result. Integrity is to check whether the result contains all files, and freshness is to check whether the cloud server sends the latest version of the data result to the user instead of returning the query result of the historical version to the user. Data owners can ...

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Abstract

The invention discloses a privacy protection method with symmetrical searchable encryption, uses B+ tree and Bloom Filter to establish a security index, uses a verifier to verify the integrity and freshness of the query result fed back by the server, and designs a Bloom Filter verifier , through which the user can verify that the queried keyword does not exist. The invention not only improves the efficiency, but also greatly improves the query efficiency of the cloud server when the keyword queried by the user does not exist while ensuring the verifiability of the data. The invention is oriented to the privacy protection strategy of cloud storage data, and the data is stored in the cloud without losing operability and management.

Description

technical field [0001] The invention relates to the technical field of data privacy protection, in particular to a privacy protection method with symmetric searchable encryption. Background technique [0002] With the continuous development of cloud computing technology, more and more governments, enterprises, and individuals have begun to use the cloud to store various files. Cloud storage can not only save the limited local storage resources of users, but also can access the data resources stored in the cloud anytime and anywhere. Currently popular cloud storage systems include Amazon, iCloud, Baidu Cloud, etc. However, cloud storage also faces the risk of privacy leakage, so a technology is needed to provide security for users' data privacy. [0003] In order to prevent the privacy leakage of user data stored in the cloud, Song et al. proposed a searchable encryption scheme based on ciphertext, and Boneh et al. designed an asymmetric searchable encryption scheme using t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F21/62G06F16/14
CPCG06F21/602G06F21/6218G06F16/152
Inventor 石贞奎付雪梅李先贤
Owner 福州掌中云科技有限公司
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