Cloud storage key generation method, cloud data storage method and auditing methods

A key generation and cloud storage technology, which is applied in the field of cloud data processing, can solve the problems of large computing burden and economic burden on the cloud, and achieve the effect of alleviating computing pressure

Active Publication Date: 2017-02-15
建投数据科技(山东)有限公司
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  • Abstract
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Problems solved by technology

[0009] The existing auditing solution to this problem is based on proxy re-signature technology. When a user in the group is revoked, the cloud will re-sign all the previous signatures of the user, that is, convert the previous signatures of the user to the group In this update process, the cloud needs to perform a large amount of calculations, especially in a big data environment, which will generate a larger amount of calculations, which will cause a huge calculation and economic burden on the cloud

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  • Cloud storage key generation method, cloud data storage method and auditing methods
  • Cloud storage key generation method, cloud data storage method and auditing methods
  • Cloud storage key generation method, cloud data storage method and auditing methods

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Embodiment Construction

[0046] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0047] A cloud storage key generation method provided by an embodiment of the present invention includes:

[0048] S10: The system is divided into z time periods, the private key generation center sets the master key and time master key for the group, and z is a positive integer greater than zero;

[0049] S11: The private key generati...

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Abstract

The invention discloses a cloud storage key generation method, a cloud data storage method and related cloud storage data auditing methods. A group user generates a current private key according to a group identity key and a group current time update key; only the group user registering at the current time in the group can obtain the group current time update key, update the current private key and generate labels for cloud data; the user cancelled from the group cannot generate the private key in a current time period, the previous private key becomes invalid, and the labels cannot be generated for the cloud data. According to the cloud storage key generation method, the cloud data storage method and the related cloud storage data auditing methods provided by the invention, for the cancelled user, a cloud no longer updates a signature previously generated by the cancelled user and the computing pressure and economic burden of the cloud are greatly mitigated.

Description

technical field [0001] The invention relates to the technical field of cloud data processing, in particular to a key generation method for cloud storage. The invention also relates to a cloud data storage method and a related cloud storage data audit method. Background technique [0002] In cloud platform applications, outsourcing data to the cloud is economically and administratively attractive, but if the integrity and availability of data cannot be guaranteed, it will hinder the widespread application of cloud platforms. In cloud storage, because the user's data is out of the user's control, any error in the cloud may lead to the modification or loss of user data, and the hardware failure of the cloud service provider or the existence of internal and external attacks will make the user's data stored in the cloud May be modified or even deleted. Therefore, from the user's point of view, there is every reason to doubt whether the data stored in the cloud is still complete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06H04L9/08
CPCH04L9/0816H04L63/06H04L67/1097
Inventor 于佳张悦郝蓉夏辉
Owner 建投数据科技(山东)有限公司
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