Method, device and system for managing authority information

Abstract

The embodiment of the invention discloses a method, a device and a system for managing authority information. The method comprises the following steps: amending instruction amendment authority information according to the authority of a file; adding the amended authority information into the file, and encrypting the file; sending the identification of the file and the amended authority information to a server, and inquiring whether the authority information corresponding to the identification exists in the server by the server according to the identification; if so, then replacing the authority information corresponding to the identification with the amended authority information; and if not, storing the amended authority information. The device comprises an amending module, a processing module and a first sending module. The system comprises a client end and a server. The embodiment effectively improves the flexibility of file encryption, lightens the burden of the server and improves the performance of the server in a mode of jointly storing the authority information by adopting the server and the file.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for managing authority information. Background technique [0002] The file encryption system is a system deployed by enterprises to protect the security of internal information. A file encryption system usually includes a server and a client. The server is used to save user information and file permission information; the client is used to encrypt and decrypt files. In the file encryption system, every time a file is created, the author or the designated user with re-authorization permission usually needs to set the permission of this document on the client side. The set permissions can have different levels for different users, such as individuals, departments or workgroups, etc. For example, a file can be divided into "read", "edit", "print" or "full control". "And other levels. After authorization and encryption, users without any authority wil...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found at least the following problems in the prior art: for the method of storing the permission information inside the file, after the file is sent, the permission information cannot be modified because the permission information is stored inside the file , which reduces the flexibility of file encryption; for the method of storing file permission information on the server, since the server stores a large number of file permission information, the burden on the server is greatly increased, and the server performance is affected

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