A share-oriented secure file directory file encryption system

A security file and file encryption technology, applied in the field of information security, can solve problems such as file theft and private information leakage

CN104125069BActive Publication Date: 2017-07-25嘉兴古奥基因科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-07-25

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Abstract

The invention relates to a secure file catalogue file encryption system towards sharing. The secure file catalogue file encryption system towards the sharing comprises a secure file catalogue, a file encryption filter and a file encryption filter auxiliary process, wherein files in the secure file catalogue is automatically encrypted by the file encryption filter, each file catalogue in the secure file catalogue is provided with or inherits a corresponding file decryption control strategy which is used to restrict certain person authorization users and community authorization users to decrypt encryption files in each file catalogue, and when the file encryption filter encrypts the files, the file decryption control strategies in the file catalogues where the files are located are used as file decryption control strategies of the encryption files, and then converted into file decryption control data, and finally stored in decryption files, and the file encryption filter auxiliary process is used to complete operation which can not be completed by the file encryption filter in an inner nuclear layer, and used to set a client end of a cloud storage system as a non-accredited process during the file cloud storage process, and thereby guarantees that the files uploaded to the cloud storage system are encrypted.
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Description

technical field

[0001] The invention belongs to the technical field of information security, and is a sharing-oriented security file directory file encryption system, in particular, a file encryption system suitable for safely sharing and using files among multiple people through cloud storage. Background technique

[0002] File cloud storage has brought great convenience to users and has been welcomed by the majority of users. Now not only individual users are using file cloud storage systems, but more and more enterprises, institutions, especially small and medium-sized enterprises and institutions are also using file cloud storage systems, including public cloud storage systems.

[0003] At present, many file cloud storage systems provide file sharing functions, that is, a user uploads a file to the cloud system of the file cloud storage system and at the same time designates users who can share the file, including specifying a specific individual user or group user . M...

Examples

Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] The system of the present invention can be implemented on the basis of the shared file encryption scheme in another patent application of the applicant "a file encryption system for shared files" (patent application number: 201410151619.2), and the implementation of many aspects is similar to that of the patent application The implementation in 201410151619.2 is the same or similar or extended on it, as follows.

[0034] Public-key cryptography: The public-key cryptography used for encrypted files is the same as that in patent application 201410151619.2, and Identity Based Encryption (IBE) can be used, including the use of extended identity marks and IBE keys Implementation of the service system.

[0035]Individual authorized users and group authorized users: the individual authorized users in the present invention correspond to the personal sha...