Sequencing multi-keyword search encryption method with cloud supporting privacy protection

A privacy protection and multi-keyword technology, which is applied in digital data protection, digital data information retrieval, digital transmission systems, etc., can solve the problems of high confidentiality of access policies and waste of resources, and achieve anonymity, improve accuracy, The effect of reducing search costs
CN113194078AActive Publication Date: 2021-07-30XIDIAN UNIV
3 Cites 19 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2021-07-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a sequencing multi-keyword search encryption method with cloud supporting privacy protection. The main implementation steps of the method comprises: 1, constructing a sequencing searchable encryption system; 2, initializing the system, and obtaining public parameters of the system and a system master key; 3, generating a user private key; 4, by a data owner, encrypting a plaintext message by using a symmetric encryption algorithm to generate ciphertext data; 5, generating a ciphertext index; 6, generating a query trap door and a query vector; 7, performing search; 8, performing verification; 9, performing outsourcing decryption; and 10, performing local decryption. According to the method disclosed by the invention, the decryption efficiency, the cloud storage overhead and the ciphertext retrieval accuracy are greatly improved on the basis of protecting the privacy of the user, and the problems of privacy disclosure, high user calculation cost and the like in the prior art are solved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of cloud storage security and ciphertext data security sharing, and in particular relates to a sorting multi-keyword search encryption method supporting privacy protection in the cloud. Background technique

[0002] With the rapid development of new technologies such as the Internet of Things, 5G, and artificial intelligence, more and more smart terminals are used by people, and the amount of data generated is increasing, which promotes the arrival of the era of big data. Big data has a huge role in promoting the entire country and various industries in society, but it also brings serious problems:

[0003] First, the user’s personal privacy is leaked, and personal privacy leaks will cause serious security risks, so the safe processing of data is very important;

[0004] Second, in recent years, due to the advantages of high resource utilization and cost savings, cloud storage has been widely valued. More ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More