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Method for preventing outgoing document from being copied

A document and clipboard technology, applied in the field of information security, can solve the problem that the keyboard Ctrl+C copy function cannot be prevented, and achieve the effect of protecting the document from being copied

Inactive Publication Date: 2015-12-16
XLY SALVATIONDATA TECHNOLOGY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cannot prevent keyboard Ctrl+C copy function

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

[0024] A method of preventing outgoing documents from being copied, comprising:

[0025] Create an encrypted document with features, which refers to encrypting the document, such as: AES256 encryption, inserting a specific mark at a specified position in the file data after encryption; for example: inserting a mark at the offset "0Xf" of the document header " JM".

[0026] Create a reader for encrypted documents, and use the reader to judge whether the read file is the encrypted document through a specific mark (the JM mark at the position of "0Xf");

[0027] The reader uses the corresponding decryption algorithm (such as: AES256) to decrypt the document and display the content of the document.

[0028] While displaying the content of the document, use WindowsApiOpenClipboard() to open ...

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PUM

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Abstract

The invention discloses a method for preventing an outgoing document from being copied, comprising the steps that: an encrypted document with characteristics and a reader for the encrypted document are created; and the reader judges the change of a clipboard through special marks and intervenes the data of the clipboard through a special function. The method for preventing the outgoing document from being copied has the beneficial effects that: the purpose of completely preventing documents from being copied is realized by the method for canceling contents of the clipboard; the system clipboard is protected directly, so that documents can be prevented from being copied from the system level; copying screen and copying of characters by PrintScreen, Ctrl+C and other keyboard operations can be prevented; continuous use of other programs is not affected; and documents cannot be copied no matter how the reading software is debugged or cracked.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method for preventing outgoing documents from being copied. Background technique [0002] In the 21st century with the rapid development of information technology, computer technology is changing with each passing day and is closely related to people's daily life. Malicious theft of private information stored in electronic documents will often bring endless troubles and troubles to individuals and even enterprises. Working in enterprises Among them, the loss caused by the leakage of corporate privacy documents is immeasurable. Small ones will make the company unable to carry out work, and large ones may lead to the bankruptcy of the company. Especially in information companies, the company's electronic data is their lifeline; how to ensure the electronic documents The security after sending out has become a very important topic in today's society. [0003] At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60
CPCG06F21/60G06F2221/2143
Inventor 梁效宁甘元军
Owner XLY SALVATIONDATA TECHNOLOGY INC
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