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DHCP message passing method and system

A message transmission and message technology, applied in the field of communication, can solve the problems of easy to be stolen and the privacy of user sensitive information cannot be guaranteed, and achieve the effect of ensuring safe transmission.

Active Publication Date: 2011-02-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These sensitive user information is transmitted in clear text in the configuration information option, which is very easy to be stolen during the transmission process, and the privacy of sensitive user information cannot be guaranteed

Method used

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  • DHCP message passing method and system
  • DHCP message passing method and system
  • DHCP message passing method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: a method embodiment of direct DHCP message transmission between a DHCP client and a DHCP server;

[0040] see figure 1 It is a diagram of a method for transmitting a DHCP message between a DHCP client and a DHCP server provided by an embodiment of the present invention.

[0041] The DHCP client and the DHCP server can obtain the keys of the client and the server through manual configuration, and the client and the server use the same encryption algorithm.

[0042] 101. The DHCP client sends a request message to the DHCP server;

[0043] In this request message, the DHCP client can optionally identify configuration information options that require encryption.

[0044] The identification configuration information option encryption request can be realized by modifying the configuration information option field and adding the configuration information option of the modified field;

[0045] The scheme for modifying the fields in the configuration information...

Embodiment 2

[0098] In the second embodiment, there is a method embodiment of the DHCP message transmission of the DHCP relay agent between the DHCP client and the DHCP server.

[0099] see figure 2 It is a diagram of a method for transmitting a DHCP message in which a DHCP relay agent exists between a DHCP client and a DHCP server provided by an embodiment of the present invention;

[0100] The DHCP client and the DHCP server obtain the keys of the client and the server through manual configuration, and the client and the server use the same encryption algorithm.

[0101] 201. The DHCP client sends a request message to the DHCP relay agent;

[0102] In this request message, the DHCP client can optionally identify configuration information options that require encryption.

[0103] The identification configuration information option encryption request can be realized by modifying the configuration information option field and adding the configuration information option of the modified fi...

Embodiment 3

[0207] Embodiment 3, a method for transmitting a DHCP message between a DHCP relay agent and a DHCP server.

[0208] see image 3 It is a diagram of a method for transmitting a DHCP message between a DHCP relay agent and a DHCP server provided by an embodiment of the present invention.

[0209] 301. DHCP relay agent encryption relay agent information option;

[0210] The DHCP server and the DHCP relay agent obtain keys through manual configuration.

[0211] When the DHCP relay agent (Relay Agent) sends a request message to the DHCP server, it will add additional information to the request message. This additional information helps the DHCP server to perform address selection and parameter configuration, and is encapsulated in the DHCP relay agent information option. middle. In the embodiment of the present invention, the DHCP relay agent uses the key previously set by manual configuration, and selects the option of additional information that needs to be encrypted, and the ...

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PUM

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Abstract

The invention provides a method and system for DHCP message transmission, which accomplishes encrypted transmission of user sensitive information. The method comprises steps as following: a DHCP client of a dynamic mainframe configuration protocol transmits a request message to a DHCP server; the DHCP server encrypts the configuration information item, returning message encrypted by the configuration information item to the DHCP client. The system comprises: a DHCP client for transmitting the request message to the DHCP server; a DHCP server for encrypting the configuration information item, returning message encrypted by the configuration information item to the DHCP client.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a system for transmitting DHCP messages. Background technique [0002] The DHCP (Dynamic Host Configuration Protocol) message is the configuration information assigned by the server to the host in the network in the Internet. These configuration information include dynamically assigned network addresses and additional configuration information options (Configuration Options). These configuration information options include: DNS The server address, the physical location of the Internet host, etc. These additional configuration information options are encapsulated in the option (option) of the DHCP message and transmitted in plain text. [0003] When the host computer (DHCP client) enters the network, it first sends a request message to the DHCP server, looking for the DHCP server in the network to request to allocate a network address, and the request message includes the op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/58H04L12/08H04L9/00
CPCH04L61/2015H04L63/0428H04L61/5014
Inventor 赵宇萍
Owner HUAWEI TECH CO LTD
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