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Attribute hiding and cancelling method based on counting Bloom filter

A Bloom filter and attribute technology, applied in the field of attribute hiding and revocation based on counting Bloom filter, can solve the problems of inability to support attribute revocation, attribute privacy leakage, etc.

Active Publication Date: 2021-04-09
TIANJIN CIST SOFTWARE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method and device for attribute hiding and revocation based on counting Bloom filter, aiming to solve the problem of privacy disclosure of attributes in attribute encryption and at the same time solve the problem that attribute revocation cannot be supported in practical applications

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  • Attribute hiding and cancelling method based on counting Bloom filter
  • Attribute hiding and cancelling method based on counting Bloom filter
  • Attribute hiding and cancelling method based on counting Bloom filter

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Embodiment Construction

[0052]It should be noted that the features of the present invention in the creation of the present invention can be combined with each other in the case of an unable conflict.

[0053]In the description of the invention, it is to be understood that the terms "first", "second", etc. are used only for description purposes, and cannot be understood as instructions or imply relative importance or implicitly indicated the indicated technical features. Quantity. Thereby, features with "first", "second", and the like may be indicated or implicitly including one or more of this feature. In the description of the invention, the meaning of "multiple" is two or more unless otherwise stated.

[0054]The invention will be described in detail below with reference to the accompanying drawings.

[0055]In order to make the objects, technical solutions, and advantages of the present invention, the experimental values ​​in the examples are not intended to be implemented by the invention, but for further detai...

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PUM

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Abstract

The invention provides an attribute hiding and cancelling method based on a counting Bloom filter. The method comprises the following steps: (1) expanding a counting bit of a first counting Bloom filter into a counting bit and a sharing bit; (2) through a character string set, coding mapping codes between an access control structure and attributes into the first counting Bloom filter in the step (1) to acquire an attribute counting Bloom filter and hide the attributes; (3) mapping the cancelled attributes to a second counting Bloom filter, and performing homogeneous subtraction on the cancelled attributes and the first counting Bloom filter to realize attribute cancellation; and (4) judging whether the attribute belongs to an attribute set of an attribute counting Bloom device or not. According to the invention, the counting Bloom filter is used to realize the complete hiding of the attributes and the revocable function of the attributes.

Description

Technical field[0001]The present invention creates a field of information security, in particular, involving an attribute hidden and revoking method based on a counting rope filter.Background technique[0002]With the rapid development and application of cloud computing, data is playing important roles in our lives, and data sharing is increasingly valued. More and more organizations and individuals store shared data on the cloud server. Once the data is stored on the server, the owner of the data will lose direct control of the data.[0003]The sharing of data can improve the value of data, how to implement data security sharing is a very meaningful problem, and the attribute-based encryption can be well solving security sharing problem.[0004]In the system of attribute encryption, the data owner will upload the data ciphertext to be shared to the cloud server, and the access structure will be uploaded to the cloud server.[0005]However, access control structures may contain some sensiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/27G06F16/22G06F16/2453G06F16/2455G06F7/575
CPCG06F16/27G06F16/2255G06F16/22G06F16/2453G06F16/2455G06F7/575
Inventor 吴阿新郑东张应辉李忠献
Owner TIANJIN CIST SOFTWARE TECH CO LTD