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Ciphertext access control method and system based on cloud computing platform

A cloud computing platform and access control technology, applied in the field of information security, to achieve the effect of improving efficiency and reducing quantity

Active Publication Date: 2014-04-02
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a cloud computing platform-based ciphertext access control method and system for the above-mentioned defects of the prior art, so as to solve the hierarchical access control problem under the existing cloud computing platform

Method used

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  • Ciphertext access control method and system based on cloud computing platform
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  • Ciphertext access control method and system based on cloud computing platform

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Please refer to figure 1 , a kind of ciphertext access control method based on cloud computing platform that the present invention proposes, comprises:

[0024] Step S100, the system predefines an access structure tree, and creates several master user attribute sets according to the access structure tree.

[0025] In order to expand the efficiency of ciphertext access control, the present invention can also assign subordinate sub-users to the master user, therefore, the system will assign sub-user attribute sets to the master user attribute set according to the access structure t...

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Abstract

The invention discloses a ciphertext access control method and system based on a cloud computing platform. The method and the system have the beneficial effects that the efficiency of access control is improved by controlling the ciphertext access control systems under existing cloud computing by grades; the ciphertext storage space is reduced by coding plaintexts and ciphertexts by utilizing the code division multiplexing technology; meanwhile, the quantity of private keys kept by users is reduced by adopting the ciphertext-policy attribute-based encryption scheme, thus improving the overall performance of the system and reducing the consumption of the storage space.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method and system for controlling ciphertext access based on a cloud computing platform. Background technique [0002] Cloud computing is a new type of computing model that can more effectively use computing resources to provide users with various data services. It links a large number of computing resources, storage resources and software resources, and uses virtual technology to provide users with customizable Computing, storage and application services, avoiding the construction and maintenance of users' own heavy infrastructure. However, the centrally managed cloud computing center will become a key target of hacker attacks. Due to its unprecedented openness and complexity, its security is facing a more severe test than ever before. [0003] On the cloud computing platform, due to the use of remote data hosting technology, the cloud service provider is the phy...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08
Inventor 喻建平王树兰张鹏
Owner SHENZHEN UNIV
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