Document nonproliferation protection device and method based on application software operation events

Abstract

The invention relates to a document nonproliferation protection device and method based on application software operation events. The device comprises a document processing software module and a monitoring application module of document processing software. According to the document processing software module, a compulsive "read-only protection" browsing mode is adopted to guarantee that the document processing software gets into a read-only working mode, and content cannot be modified; according to the monitoring application module of the document processing software, a protection working mode is started based on different types, and when it is detected that an illegal event happens, interference except for normal service is performed; the document processing software module and the monitoring application module of the document processing software keep operation independency physically and keep interedependency and mutual cooperation in terms of service. The document nonproliferation protection device and method are used for carrying out effective nonproliferation protection when a specific user performs browsing or printing operation on a specific document; more refined read-only protection for document content and UI interaction protection for additionally-saved menus, buttons, etc. of the application software are provided; no intermediate format file is generated, the efficiency is consistent with the efficiency of directly opening a WORD browse file, and the purpose that editing, selecting and duplicating and additional saving cannot be performed during browsing is achieved.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a document anti-diffusion protection device and method based on application software operation events. Background technique [0002] In order to prevent the spread of confidential documents, some military enterprises have adopted a series of protective measures. The current practice is to control file-level encryption (that is, the system will automatically encrypt and store documents and use them after decryption). With the improvement of security awareness, there is a need to control the content-level non-proliferation protection of WORD documents, which is mainly reflected in Software menu (such as: save as, save menu), buttons (such as: save button, paste button, copy button), right-click menu (such as: copy, paste), anti-expansion protection, require part in the PDM (EAP) system When browsing a WORD file, a low-privileged user cannot edit the conten...

AI Technical Summary

Problems solved by technology

The current practice is to control file-level encryption (that is, the system will automatically encrypt and store documents and use them after decryption). With the improvement of security awareness, there is a need to control the content-level non-proliferation protection of WORD documents, which is mainly reflected in Software menu (such as: save as, save menu), buttons (such as: save button, paste button, copy button), right-click menu (such as: copy, paste), anti-expansion protection, require part in the PDM (EAP) system When browsing a WORD file, a low-privilege user cannot edit the content of the file, select the content of the document for copying and pasting, and cannot save the document as a file, etc.

[0003] In the existing PDM (EAP) system, when some low-privilege users browse WORD files, the methods for preventing document proliferation include: (1) convert the word document into PDF format, and then browse the converted read-only PDF file; 2) Use encryption software to encrypt WORD documents, and the content cannot be protected as read-only; (3) Anti-proliferation technology that prevents copying at the disk operating system (DOS) level

[0004] The existing technical solutions have the following defects: (1) In practical applications, it is found that this conversion will affect the efficiency (every time a document is modified, a new pdf file needs to be generated), there is a risk that the conversion cannot be performed, and the converted pdf document can still be converted. Select the text in it to copy and paste; (2) the encryption software can only prevent the encrypted document from being opened, and cannot achieve the purpose of being able to browse but cannot edit, select the content and save as a file for a specific user; (3) the disk operating system (DOS )-level anti-proliferation technology that prevents copying, but it is too closely related to the operating system, which may lead to the risk of operating system crashes, resulting in high development costs and testing costs

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