Method, server and customer apparatus for acquiring dynamic host configuration protocol cipher

A dynamic host configuration, server-side technology, applied in the direction of public key of secure communication, user identity/authority verification, electrical components, etc. The effect of enhancing security

Active Publication Date: 2009-03-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In the process of realizing the present invention, the inventor found at least the followin

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  • Method, server and customer apparatus for acquiring dynamic host configuration protocol cipher
  • Method, server and customer apparatus for acquiring dynamic host configuration protocol cipher
  • Method, server and customer apparatus for acquiring dynamic host configuration protocol cipher

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Embodiment Construction

[0033] In the process of implementing various embodiments of the present invention, the inventor found that: since the pre-calculated session key K needs to be distributed to all clients for storage through a secure way, the session key K is easily stolen in the case of a long time Leakage or cracking, resulting in greatly reduced security; at the same time, for different DHCP servers, the client needs to save multiple or multiple sets of session keys; there are security risks in the process of distributing through secure channels, for example, this approach is either in The product is pre-stored before leaving the factory, or the copy method is used at the beginning of the deployment, which is prone to errors, and there is a problem of assigning the key of other clients to another client. Moreover, since the DHCP server needs to store the master key (Master Secret Key, MSK), there is also the danger of being leaked or cracked for a long time. Also, session key auto-update is ...

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Abstract

The invention relates to a method for obtaining a key of a dynamics host machine allocating protocol, a server and a user end device, wherein the method comprises the following steps: receiving a user end public key which is sent by a DHCP user end, using the Diffie-Hellman algorithm to calculate a private key of the server end, carrying out the Diffie-Hellman algorithm to the private key of the server end and the public key of the user end and obtaining a master key, the server comprises a receiving unit, a key generating unit and a master key generating unit, and the user end device comprises the key generating unit, the receiving unit and the master key generating unit. The invention further relates to a DHCP system which comprises the server and the user end device, wherein the DHCP user end and the server end negotiate the master key through DH, thereby different conversation keys are used in each conversation, thereby the safety of DHCP conversation is increased. And the DHCP user end and the server end do not need to store the master key for a long-period and share the key, and thereby the management burdens due to sharing the key are reduced.

Description

technical field [0001] The present invention relates to the technical field of mobile network communication, in particular to a method for obtaining a Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol, DHCP) key, a server, a client device and a DHCP system. Background technique [0002] With the development and expansion of mobile networks, base station (BS) equipment has developed from traditional macro base stations to micro base stations and home base stations, so the demand for such BS equipment has increased by hundreds. At the same time, customers or users require that such equipment purchased back can be plug-and-play. In the original mobile network application, the IP addresses of BS and other network elements and the IP addresses of some communication entities (such as gateways) when accessing the network are determined by The way of manual configuration by on-site operators can no longer meet the market demand. In order to save labor costs a...

Claims

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Application Information

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IPC IPC(8): H04L9/30H04L9/32H04L29/06
Inventor 吴颂期
Owner HUAWEI TECH CO LTD
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