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Gateway system and method for encrypting and decoding files

An encryption and decryption, encryption and decryption module technology, applied in the field of information processing, can solve problems such as inability to file encryption and decryption processing, and achieve the effect of facilitating demand upgrade and application expansion, data processing unification, and quantity saving

Inactive Publication Date: 2015-07-01
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a gateway system for encrypting and decrypting files. Technical issues that require encryption and decryption of files

Method used

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  • Gateway system and method for encrypting and decoding files
  • Gateway system and method for encrypting and decoding files
  • Gateway system and method for encrypting and decoding files

Examples

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Comparison scheme
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Embodiment 1

[0028] In Embodiment 1, the gateway system provided by the present invention is deployed between the switch and the server. The server stores plaintext file data, and the client requests the server to upload and download files to be detected by the gateway. The specific deployment location is as follows: figure 2 shown. The following takes the system's decryption of uploaded files and encryption of downloaded files as an example to specifically describe the workflow of the gateway system in Embodiment 1:

[0029] Such as image 3 As shown, the method of decrypting the uploaded file is as follows:

[0030] (1) The client sends an upload request to the server, and when the server passes the verification of the upload request, the client starts to upload files to the server; wherein, the upload request is a HTTP, FTP or CIFS protocol type request;

[0031] (2) The gateway system receives the file data and performs data analysis. When it recognizes the upload request and recogn...

Embodiment 2

[0037] Embodiment 2 is the application of the gateway system and the encryption and decryption method provided by the present invention in application uploading and downloading, specifically as follows:

[0038] a. Determine whether the client request is uploading or downloading; if it is uploading, go to step (b); if it is downloading, go to step e;

[0039] b, judging whether the file is a file encrypted by the gateway system of the present invention, if not, then not processing; if so, then enter step c;

[0040] c. Judging whether there is decryption authority according to the key level contained in the file header, if not, do not process, if there is authority, then enter step d;

[0041] d, strip the encrypted header of the file, and decrypt the received encrypted file according to the key information in the encrypted header; transmit the plaintext file to the server;

[0042] e. Add encrypted information in the file header according to the preset key level; send the en...

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Abstract

The invention discloses a gateway system and method for encrypting and decoding files. The gateway system comprises a data receiving and dispatching module, a data analyzing module, a file stream separating module, an encrypting and decoding module and a secondary data encapsulation module. According to the method for encrypting and decoding files, through using the system to perform encrypting and decoding after analyzing and separating a received network data packet, the network transmission data can be elaborately and pointedly performed with independent encrypting and decoding control according to a specific application layer network protocol through using file as unit, the data safety and privacy in the network transmission are reliably guaranteed, and special encrypting and decoding marks and fine-grained encrypting and decoding permissions are provided for data so as to meet the safety and privacy demands of a user on the server document data.

Description

technical field [0001] The invention belongs to the technical field of information processing, and more specifically relates to a gateway system and method for encrypting and decrypting files. Background technique [0002] In today's information economy era, people are increasingly using various systems to share and exchange information in order to improve the efficiency of information utilization. For users, in addition to the need to obtain information immediately, there is also a need to ensure the confidentiality and integrity of information: to avoid the threat of data security from viruses and Trojan horses, some files on the system hope to be set as non-arbitrary accessed, or copied. Especially for enterprise users, how to prevent the leakage of core information assets while ensuring business efficiency and continuity has become the focus and difficulty of enterprise information security construction. [0003] In the prior art, a gateway is mostly used to control th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/66
Inventor 陈永府
Owner HUAZHONG UNIV OF SCI & TECH
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