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Data interaction method and data interaction device based on CHAP protocol

A data interaction and protocol technology, applied in secure communication devices, digital transmission systems, user identity/authority verification, etc., can solve problems such as client and server data transmission security, ensure security and reliability, and avoid replay Attack, avoid attack effect

Active Publication Date: 2016-01-27
SHENGQU INFORMATION TECH SHANGHAI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a data interaction method and device based on the CHAP protocol to solve the security problem of data transmission between the client and the server

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  • Data interaction method and data interaction device based on CHAP protocol
  • Data interaction method and data interaction device based on CHAP protocol
  • Data interaction method and data interaction device based on CHAP protocol

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Embodiment Construction

[0038] The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagrams. The advantages and features of the present invention will become apparent from the following description and claims. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

[0039] This embodiment provides a data exchange device based on the CHAP protocol, such as figure 1As shown, it includes: a client 100 and a server 200, the client 100 encrypts the locally stored authorization code and transmits it to the server 200, and the server 200 receives the encrypted authorization code, decrypts it and verifies it legality; when verifying that the authorization code is legal, the server 200 generates a first random number, and encrypts the authorization code and the first r...

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Abstract

The invention provides a data interaction method and a data interaction device based on the CHAP protocol. The data interaction device based on the CHAP protocol comprises a client and a server. The client and the server carry out data interaction after identity authentication succeeds. The legitimacy of the client and the server is verified using a first random number, an asymmetric encryption algorithm and a secure hash algorithm, and therefore, identity authentication between the client and the server is realized, and attack from the middleman is avoided. Data transmission is carried out between the client and the server after identity authentication succeeds, so that the safety and reliability of data transmission between the client and the server are ensured, and replay attack is avoided.

Description

technical field [0001] The invention relates to the field of mobile communication data services, in particular to a CHAP protocol-based data interaction method and device. Background technique [0002] With the development of computer technology, the data interaction between the client and the server is more and more frequent, and the security challenges faced by the data transmission between the client and the server are more and more severe. [0003] Currently, the request between the client and the server is usually selected to be parameter signed, or the number of iterations and time stamps are added to prevent man-in-the-middle attacks, so as to ensure the security of data transmission between the client and the server. This technical solution is simple, but relies on time synchronization, which is difficult to implement and less accurate. At the same time, brute force and guesswork attacks are also faced. SUMMARY OF THE INVENTION [0004] The purpose of the present...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L9/32
CPCH04L9/3273H04L63/0435H04L63/0442H04L63/0869
Inventor 袁炯
Owner SHENGQU INFORMATION TECH SHANGHAI
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