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Encrypting device and encrypting method for safely modifying information protocol message

A protocol message and a technology for modifying messages are applied in the field of encryption devices for realizing secure modification of information protocol messages, and can solve problems such as inability to modify device configuration information safely.

Active Publication Date: 2013-07-03
KYLAND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the device configuration information cannot be safely modified in the above prior art, and propose an encryption device and method for safely modifying information protocol messages

Method used

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  • Encrypting device and encrypting method for safely modifying information protocol message
  • Encrypting device and encrypting method for safely modifying information protocol message
  • Encrypting device and encrypting method for safely modifying information protocol message

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0027] (1) The server broadcasts a hello message with its own mac address to the entire network.

[0028] (2) After the client receives the hello message from the server, it calculates the private key of the server and sends a hello message to the server.

[0029] (3) After the server receives the hello message from the client, it calculates the private key of the client. And send a confirmation message to the client, wherein the message carries a private key field, and its field needs to be encrypted with a public key (the public key is configured in the server and customer service end when the device leaves the factory). Tell the client that the communication data area needs to be encrypted with a private key in the future.

[0030] (4) The private key of the subsequent encrypted data area is: (server's MAC&server's MAC)%6

[0031] (5) After receiving the confirmation message from the server, the client sends a success message carrying its own MAC information to the server...

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Abstract

The invention discloses an encrypting device and an encrypting method for safely modifying an information protocol message. The method comprises the following steps of: comparing a source mac address of a server which transmits a modification message with a mac address stored by a client side before the device configuration of the client side is modified, and determining whether a private key of the client side is used for modifying the data information in the message in a deciphering way according to a comparison result. Therefore the client device configuration information can be safely modified by the client side according to the protocol message of a user setting command.

Description

technical field [0001] The invention relates to an encryption device and method for realizing safe modification information protocol message. Background technique [0002] Today, with the growing industrial communication, countless new industrial local areas are born every day. And each device needs to be configured manually, so manual repetitive labor is increased. Today, with the growing industrial communication, countless new industrial local areas are born every day. And each device needs to be configured manually, so manual repetitive labor is increased. This patent has just solved this problem well. [0003] Of course, it is a very dangerous thing to dynamically modify the information of the device. In order to ensure the security of communication, this patent uses the MD5 encryption algorithm to encrypt the information during the message interaction process to ensure the security of the information, and uses the MAC Certification guarantees the accuracy of the inf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12
Inventor 肖智中毕洪涛
Owner KYLAND TECH CO LTD