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Connection keyword retrieval method based on attribute encryption in hybrid cloud

An attribute encryption and keyword technology, applied in the field of cloud computing and information retrieval, can solve the problems of complex and difficult to implement access control attribute set

Active Publication Date: 2018-04-20
WUHAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The large scale and highly dynamic nature of users in a hybrid cloud makes the set of access control attributes complex and difficult to implement

Method used

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  • Connection keyword retrieval method based on attribute encryption in hybrid cloud
  • Connection keyword retrieval method based on attribute encryption in hybrid cloud
  • Connection keyword retrieval method based on attribute encryption in hybrid cloud

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Embodiment Construction

[0064] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0065] Below at first explain and illustrate with regard to the technical terms of the present invention:

[0066] Bilinear group: finite N factorial cyclic group;

[0067] Bilinear map: A function that generates an element in a third vector space from elements in two vector spaces, and the function is linear with respect to each parameter.

[0068] Access control attribute set: the data access rules formulated by the file owner, which limit the file can be accessed by users with which attributes; when the file owner uploads the file ciphertext and keyword ciphertext, the corresponding access cont...

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Abstract

The invention discloses a connection keyword retrieval method based on attribute encryption in a hybrid cloud. The method comprises the following steps: the registration step; the initialization step;the keyword index generation step; the file retrieval party authorization step; the search trap door generation step; and the retrieval and result returning step. Through the method disclosed by theinvention, the connection keyword retrieval under the ciphertext environment in the hybrid cloud is realized, the user privacy information is guaranteed, and massive calculation tasks are transferredto a private cloud, so that this system is suitable for resource-limited mobile equipment.

Description

technical field [0001] The invention belongs to the technical field of cloud computing and information retrieval, and more specifically relates to a connection keyword retrieval method based on attribute encryption in a hybrid cloud. Background technique [0002] Cloud computing has become a new IT architecture. Many enterprises and individuals have migrated their applications and data to cloud servers and began to enjoy the many benefits brought by cloud computing, including cheap and scalable computing resources, stable and high-capacity storage space, flexible access to support anytime, anywhere, and more. Cloud computing can be divided into public cloud, private cloud and hybrid cloud according to its deployment method and scale. The public cloud is operated by a large enterprise and can serve a large number of users. The private cloud incorporates the infrastructure, applications and data that provide services into the organization's internal management, making it more...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08G06F17/30
CPCG06F16/9027G06F16/903G06F16/90344H04L63/0442H04L67/06H04L67/10
Inventor 何亨张继郑良汉李鹏陈享
Owner WUHAN UNIV OF SCI & TECH
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