A certificate-free online/offline searchable ciphertext method

A certificate-free and ciphertext-free technology, applied in the field of network security, can solve problems such as low efficiency of searchable encryption, failure to consider user computing or storage resource constraints, etc.

Active Publication Date: 2019-01-25
GUANGDONG UNIV OF PETROCHEMICAL TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are some deficiencies in the existing searchable encryption methods without certificates, one of which is that they fail to consider the limited computing or storage resources of users, especially the widespread use of mobile devices today,

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A certificate-free online/offline searchable ciphertext method
  • A certificate-free online/offline searchable ciphertext method
  • A certificate-free online/offline searchable ciphertext method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to make the purpose, technical content and advantages of the present invention clearer, the present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0038] A certificate-free online / offline searchable ciphertext method of the present invention, figure 1 It is the overall structure diagram of the present invention, which is composed of a data owner, a server and a data user. In the communication between the data owner and the server, the relevant calculations in the offline stage and the online stage are completed successively, and then the offline ciphertext and file ciphertext And the online ciphertext is sent to the server for storage. In the communication between the data user and the server, the relevant calculations in the offline phase and the online phase are completed successively, and then the offline trapdoor and the online trapdoor are sent to the server. After the server verifies suc...

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

PUM

No PUM Login to view more

Abstract

The invention provides a certificate-free online/offline searchable ciphertext method, which separates a certificate-free searchable encryption process into offline and online phases, wherein the offline phase is independent of keywords, and the online phase requires the participation of keywords. After completing the necessary preparatory work, the data owner generates offline ciphertext and fileciphertext in offline phase, and generates online ciphertext in online phase and sends the offline ciphertext, file ciphertext and online ciphertext to the server. Before the data user retrieves thefile ciphertext, the offline trap gate is generated in the offline phase, the online trap gate is generated in the online phase, and then the offline trap gate and the online trap gate are sent to theserver. After the server passes the authentication, notify the data user to download the file ciphertext, otherwise, terminate the related operation. The invention is very effective for the data owner and the data user when the computing resources or the storage resources are limited, and the off-line stage and the on-line stage are successively carried out, respectively occupying the computing resources or the storage resources, thereby reducing the common occupying trouble.

Description

technical field [0001] The invention belongs to the technical field of network security, in particular to a certificate-free searchable ciphertext method, in particular to a certificate-free online / offline searchable ciphertext method. Background technique [0002] With the development of network technology and computer storage technology, network costs and storage costs have also been greatly reduced. Especially with the current cloud storage technology, more and more users are willing to outsource data, especially those with limited computing and storage resources. Mobile devices. The most important role in data outsourcing is the server, but the server is not safe and often becomes the target of network attacks. In order to protect the privacy and security of user data, the data owner encrypts the data before outsourcing the data, and then uploads the ciphertext to server, but the subsequent search and retrieval of ciphertext becomes troublesome, and searchable encryptio...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L29/06H04L9/08G06F16/16
CPCH04L9/0861H04L9/0869H04L63/06H04L63/062
Inventor 项顺伯徐兵王爱国钟鸣李云鹤
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap