Searchable encryption method of multiple keywords at specified location in cloud storage

A technology of specifying location and encryption method, applied in the field of information security, can solve the problem of unable to realize keyword retrieval and other problems

Active Publication Date: 2015-11-11
佛山市明茂网络科技有限公司
View PDF7 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a searchable encryption method for multiple keywords at a specified location in c

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
  • Searchable encryption method of multiple keywords at specified location in cloud storage
  • Searchable encryption method of multiple keywords at specified location in cloud storage
  • Searchable encryption method of multiple keywords at specified location in cloud storage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The present invention will be described in detail below in combination with specific embodiments.

[0051] A searchable encryption method for a plurality of keywords in a specified position in the cloud storage of the present invention is specifically implemented according to the following steps:

[0052] Step 1. System parameter initialization:

[0053] Specifically follow the steps below to implement:

[0054] Step (1.1), the security parameter k is input by the file encryptor Ent, and two multiplicative cyclic groups G whose order is a prime number q are output 1 and G 2 , g 1 for G 1 generator, g 2 for G 2 generator of

[0055] Step (1.2), select a bilinear map

[0056] Step (1.3), randomly and uniformly select x∈Z q As the master key of the file encryptor Ent, denoted as msk E n t = x ∈ Z q * ...

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 discloses a searchable encryption method of multiple keywords at the specified location in cloud storage. The method is implemented specifically according to the following steps: Step 1, system parameter initialization; Step 2, user adding; Step 3, file encryption and security index generation by a file owner; Step 4, index re-encryption by a server; Step 5, generation of keyword search token by a user; Step 6, search of ciphertext keywords by a cloud storage server; Step 7, decryption of ciphertexts by the user; and Step 8, user revocation. By the method, the problem that keyword search cannot be realized after cloud storage data encryption in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to an encryption method in which multiple keywords at designated positions in cloud storage can be searched. Background technique [0002] As a new computing model, cloud computing can provide various advanced computing services with low cost and scalability. In order to save the cost of storing and managing data, enterprises and individuals can outsource data to cloud storage servers. The data provided by the cloud storage service has the advantages of availability and reliability, but it also has an obvious disadvantage, that is, the data is not under the management and control of the user, so how to maintain the confidentiality and integrity of the data becomes an urgent concern of the user. question. [0003] Although enterprises believe in the reliability, availability, fault tolerance, etc. of cloud storage service providers (CloudStorageServiceProvid...

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): H04L9/08G06F17/30H04L29/08
Inventor 王尚平张亚玲王晓峰
Owner 佛山市明茂网络科技有限公司
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