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A method and device for file authority management based on file double buffering

A technology of rights management and double caching, which is applied in the computer field, can solve the problems of document permission confusion, etc., and achieve the effect of malicious leakage of good documents and convenient viewing and editing

Active Publication Date: 2019-05-21
北京明朝万达科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A single encryption process can only open and edit one encrypted document. If multiple documents are opened, document permissions will be confused

Method used

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  • A method and device for file authority management based on file double buffering
  • A method and device for file authority management based on file double buffering
  • A method and device for file authority management based on file double buffering

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Experimental program
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specific Embodiment approach

[0096] Such as Figure 5 , a specific embodiment of the present invention is as follows:

[0097] (1) The server configures and distributes file security policies (there may be more than one).

[0098] (2) The confidentiality policy of the terminal receiving files.

[0099] (3) When a user opens a document, according to the document header identifier, a corresponding document security level policy is issued to the document driver for document permission and encryption control.

[0100] This project requires that documents on all PCs in the office need to be encrypted and have corresponding permissions configured when they are transferred between different departments. Editing cannot be decrypted, and a process opens multiple documents with different permissions, which greatly reduces the inconvenience caused by the installation of document control.

[0101] Through the solution provided by the invention, the malicious disclosure of documents can be better controlled; the do...

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PUM

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Abstract

The invention discloses a file permission management method and device based on file double buffers. The method comprises the steps that an opening action of a file is intercepted; a file header is read, whether the file is an encryption document is judged, and if yes, an encryption policy is issued to a file filtering driver; the file filtering driver judges whether the file opening process is an encryption process, and if yes, the encryption process is matched with the encryption policy; a file control block (FCB) is created for the opened file, and the file control block is made to have a plaintext buffer and a ciphertext buffer; and a secret key and a document permission of the file are recorded in the file control block. The invention furthermore discloses a file editing method and a file saving method and device based on the file double buffers. Through the scheme, malicious secret leakage of a document can be better controlled, and it is convenient for staff to check and edit the document under the condition that the document is controlled.

Description

technical field [0001] The invention relates to the field of computers, in particular to a method and device for file authority management based on file double buffering. Background technique [0002] At this stage, the file rights management method based on the file encryption driver is: the security vendor's file encryption product implements one encryption for each document, but the document permissions can only achieve the same process with the same authority, and cannot achieve multiple permissions in the same process. [0003] At this stage, security manufacturers' DLP (Data leakage prevention) product file encryption and rights management process is as follows: [0004] 1) The encryption process opens the document; [0005] 2) The application layer program sends key and permission related information to the driver; [0006] 3) The encryption process uses the key to open the document, and performs corresponding control according to the authority. [0007] A single e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/62
CPCG06F21/6209G06F2221/2107G06F2221/2141
Inventor 曲恩纯喻波王志海彭洪涛安鹏王志刚
Owner 北京明朝万达科技股份有限公司