Revocable data sharing method based on fog calculation

A data sharing and fog computing technology, applied in the field of information retrieval, which can solve problems such as low efficiency, system bottlenecks, and reduced computing overhead.

Active Publication Date: 2018-11-16
XIDIAN UNIV
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Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the existing data sharing method is not suitable for the outsourcing environment, and the efficiency is low in practical application; the existing revocation technology cannot realize instant attribute revocation, and the It is easy to cause system bottlenecks
[0004] The difficulty and significance of solving the above technical pro

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  • Revocable data sharing method based on fog calculation
  • Revocable data sharing method based on fog calculation
  • Revocable data sharing method based on fog calculation

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[0058] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0059] In the data network of the present invention, the management of data sharing issues and user rights, cloud computing is an ideal platform for realizing data network data sharing, used to ensure user privacy data security, reduce user computing overhead, and dynamic management system of users Permissions. The present invention proposes a revocable vehicle data sharing method based on fog computing, realizes data access control in a data network system, and designs an efficient user and attribute revocation method for it.

[0060] The application principle of the present invention will be described in detail below w...

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Abstract

The invention belongs to the field of information retrieval and the technical field of its database structure, and discloses a revocable data sharing method based on fog calculation. When a user revocation occurs, it is not necessary to update the keys of other unrevoked users and re-encrypt the ciphertext, only the conversion key of the revoked user needs to be deleted; after the conversion key is deleted, the cloud server cannot perform partial decryption operations for the revoked user, thereby realizing the user's revocation. When an attribute revocation occurs, the keys of all affected users in the system needs to be updated and the ciphertext is re-encrypted to ensure that other users may still decrypt the ciphertext as usual. The invention realizes the data access control in the data network system, has the advantages such as high system access efficiency, low computational cost, and support for dynamic user rights management, and may be used for protecting the privacy data of the user in the data network, reducing the calculation cost of the user, and dynamically managing the authority of the user in the system.

Description

technical field [0001] The invention belongs to the technical field of information retrieval; and database structure thereof, in particular to a revocable data sharing method based on fog computing. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: a data network is a communication network used to transmit data services, and its specific applications include wide area networks, telecommunication networks, vehicle networks, and energy networks. In the past ten years, with the development of science and technology such as cloud computing and cellular networks, related applications such as data networks, including vehicle networks and energy networks, have developed rapidly. However, the problem of data sharing in the data network has attracted a lot of attention. Therefore, it is necessary to propose a safe and efficient data sharing method. Existing data access control schemes based on cloud computing are not su...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L9/30H04L9/08
CPCH04L9/3033H04L9/3073H04L63/0442H04L63/0876H04L9/0891
Inventor 樊凯尹洁王俊雄许辉岳李晖
Owner XIDIAN UNIV
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