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Controllable exchange method for symmetric key-encrypted file

A symmetric key encryption and file technology, applied in the direction of electrical components, transmission systems, etc., to achieve the effect of preventing leakage

Active Publication Date: 2015-05-13
深圳市紫色力腾科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a convenient and safe method for exchanging files of symmetric key encryption algorithm, to solve the problem of controllable exchange between computers using symmetric encryption algorithm encrypted files

Method used

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  • Controllable exchange method for symmetric key-encrypted file

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Comparison scheme
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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] figure 1 Shown is a controllable exchange system of symmetric key encrypted files, including client, server, file exchange program, sensitive files, sending and receiving tools, approval end, receiving end, etc. and so on to form a local area network, or connect the client and the receiving end through the Internet to form a wide area network. Its workflow is:

[0022] 1. The client (including sender, receiver and approver) first registers and obtains a personal (symmetric) key with the server, and uses the key to encrypt local sensitive files.

[0023] 2. The sending end uses the sending tool to send the local sensitive information encrypted with the personal key to the receiving end (as shown in Figure 1).

[0024] 3. The server converts the file encrypted by the sender into a file encrypted by the approver's key through t...

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PUM

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Abstract

The invention discloses a controllable exchange method for a symmetric key-encrypted file. The controllable exchange method comprises the following steps of: A) establishing user information at a file encryption server, wherein the information comprises private keys of all users, and the server comprises a file encryption and decryption unit, a file transceiving unit and a message transceiving unit; B) using the server to send a sending request sent by a client to a related examination and approval end for examination and approval according to the sending request sent by the client; C) using the examination and approval end to judge whether the sending request is agreed or not after examination and approval information is received, and automatically sending the examination and approval result back to the server; and D) using the server to judge whether sending is performed or not according to the examination and approval result after the examination and approval result is received. According to the controllable exchange method for the symmetric key-encrypted file, disclosed by the invention, the whole transmission can be ensured in an encrypted safety domain, the divulgence in file transmission can be prevented, and safety, controllability and convenience in exchange of the symmetric key-encrypted file can be realized.

Description

technical field [0001] The invention relates to the field of computer file encryption, in particular to an encryption protection for internal files of enterprises and institutions, and transmission and exchange of encrypted files under controllable conditions. Background technique [0002] With the continuous development of enterprise informatization and e-government, more and more application systems are used in people's daily work and life. All kinds of important information are stored electronically, and computer files are the most important information carriers. Every application system will collect, process, output and store a large amount of data, so these units face various challenges in document management. In order to ensure security, a large number of secret-related files are encrypted and stored in the computer, but the encrypted files will cause a lot of inconvenience in sharing due to the privatization of the key. [0003] The existing encryption algorithms ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
Inventor 吕少铭徐伯星王伟
Owner 深圳市紫色力腾科技发展有限公司