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Time sequence-based multiway tree data index structure cloud storage privacy protection method

A technology of data indexing and time series, which is applied in the field of information security and can solve problems such as updating access rights

Active Publication Date: 2018-10-09
SHANGHAI MARITIME UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, from the delayed update technology to solve the problem of access rights update

Method used

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  • Time sequence-based multiway tree data index structure cloud storage privacy protection method
  • Time sequence-based multiway tree data index structure cloud storage privacy protection method
  • Time sequence-based multiway tree data index structure cloud storage privacy protection method

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Embodiment Construction

[0094] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of the present invention is not limited in any way.

[0095] Such as figure 1 As shown, the present invention adopts the application scenario based on the data outsourcing model, which includes four entity parts, the data owner (O), the data user (U), the cloud trusted center (CTC), and the cloud storage center (CSC);

[0096] Data owner (O): The data owner is the entity that uploads the data stored locally to the cloud storage center; the data owner needs to be authenticated by the cloud trusted center, and upload the data after encrypting the data with the key distributed by it; the other On the other hand, the data owner can also apply for access to other data stored in the cloud server. In th...

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PUM

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Abstract

The invention discloses a time sequence-based multiway tree data index structure cloud storage privacy protection method. The method comprises the following process that by creating a time sequence-based multiway tree data storage structure (MTTS) on a cloud trusted center, effective management is conducted on data names, and the retrieval speed is increased. A key derivation algorithm is designedon the basis of the MTTS structure to achieve key management and distribution, an encrypted keyword retrieval algorithm is constructed to support data sharing and ciphertext retrieval, a data privacyprotection method is designed on a proposed cloud storage architecture for the two processes of data storage and data reading, and the user access authority changing and data updating problems are solved by combining a delayed updating technology. According to the design of the cloud storage privacy protection method, the privacy of a user can be effectively protected, and efficient data access can be supported.

Description

technical field [0001] The present invention relates to the field of information security, in particular to an effective time-series-based multi-fork tree index structure cloud storage privacy protection method, which protects user privacy by encrypting and uploading documents to the cloud, and builds a keyword retrieval algorithm based on EKSA Implemented support for data sharing and ciphertext retrieval, improving the usability of encrypted documents. Background technique [0002] Cloud storage is extended and developed on the basis of cloud computing. Compared with cloud computing systems, cloud storage can be considered as a cloud computing system configured with large-capacity storage space. In the application process of cloud storage, security is the primary issue considered by users. In the cloud storage system, the service provider is untrustworthy in many cases, and it may hand over the data stored by the user to a third party due to economic interests, resulting ...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06H04L9/08
CPCH04L9/0861H04L9/0863H04L63/0428H04L63/08H04L63/083H04L67/1097
Inventor 张文杰韩德志王军毕坤
Owner SHANGHAI MARITIME UNIVERSITY
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