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File transmission method for protecting file from being copied

A file and protected technology, applied in digital data protection, transmission systems, instruments, etc., can solve problems such as enterprise losses

Inactive Publication Date: 2007-10-24
WUDI SCI & TECH (XIAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This problem is especially serious inside the enterprise. Although the internal files of the enterprise usually do not need to be modified by other users, passwords are usually set to prevent the files from being modified, but it is always necessary to obtain the contents of the files for the relevant users. Therefore, files are usually spread within the enterprise in the form of email or file sharing, so competing companies can always easily obtain the contents of the files leaked from within the enterprise, causing heavy losses to the enterprise

Method used

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  • File transmission method for protecting file from being copied
  • File transmission method for protecting file from being copied
  • File transmission method for protecting file from being copied

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Embodiment Construction

[0020] The following content is sufficient for any person skilled in the art to understand and implement the technical content of the present invention, and according to the content and drawings given in this specification, they can clearly understand the present invention and the technical features it brings.

[0021] FIG. 1A is a flow chart of the method for disseminating files to protect files from being copied in the present invention, and an embodiment as shown in FIG. 2 is used to illustrate the present invention. When the first user on the first client 210 intends to spread the protected file using the present invention to the second user on the second client 220, first the distribution file 300 corresponding to the file will be propagated to the second user. Or, when the second user wants to open the protected file, at first the second client 220 will use the software that can execute the present invention to read the dissemination file 300 (step 110), as shown in Figur...

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PUM

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Abstract

The invention discloses a file transmission method for protecting file from copy, wherein when a client needs to open a protected file, first reads a distribution document transmitted by the client, while the document comprises authorization information and file information, the client based on the authorization information judges if the protected file can be read, when the client can read the protected file, the client builds communication with a server, and the server reads the protected file according to the file information to be transmitted to the client, the client stores the protected film into a memory and starts the file, therefore, the protected file can not be copied from the memory.

Description

technical field [0001] The invention relates to a method for disseminating a file, in particular to a method for disseminating a file by downloading the file from a server to the internal memory and opening it to protect the file from being copied. Background technique [0002] At present, most of the ways of disseminating files on the network are transmitted by means of File Transfer Protocol (File Transfer Protocol; FTP), local area network sharing, hypertext transfer protocol (HyperText Transmission Protocol; HTTP), and e-mail. Files are transmitted to After other users, other users can arbitrarily edit and arbitrarily disseminate the received files, so the above transmission method has no protection effect on the file dissemination process at all. [0003] In order to protect files, there is a way to set a password on the file to be protected, so that the protected file can only be opened after entering the password. If the password is not ent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/22H04L12/54H04L29/06G06F21/60
Inventor 陈淮琰公学雷王小春
Owner WUDI SCI & TECH (XIAN) CO LTD