Dynamic restructuring method in cluster encryption communication

A technology of encrypted communication and dynamic reorganization, applied in the field of communication, can solve the problems of difficult synchronization of group keys and difficult to realize dynamic reorganization of terminal encrypted group calls, and achieve the effect of ensuring confidentiality

Active Publication Date: 2015-04-22
成都三零瑞通移动通信有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] Aiming at the technical problems that the dynamic reorganization method in the prior art is difficult to synchronize the group key and realize the dynamic reorganization of terminal encrypted group calls, the present invention discloses a dynamic reorganization method in cluster encrypted communication

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  • Dynamic restructuring method in cluster encryption communication
  • Dynamic restructuring method in cluster encryption communication

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 The structure diagram of the dynamic reorganization system in the cluster encrypted communication is shown. The encryption cluster system is composed of cluster encryption terminal (embedded password module), base station subsystem (BSS), dispatch subsystem (DSS), and dispatch subsystem (DSS) includes dispatch server (PDS), home register (PHR), dispatch Agent server (DAS), dispatcher cipher machine and key management center (KMC).

[0032] The PDS is the main control point of the call process, and is responsible for functions such as collection and distribution of trunking voice streams and generation of billing. PHR is responsible for the registration management of groups and members, and provides user service authority identification, statistics and billing functions. DAS controls the access and oper...

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Abstract

The invention relates to a dynamic restructuring method in cluster encryption communication. The method specifically includes the following steps that firstly, group information updating is started; secondly, a key set of a group corresponding to terminals is acquired; thirdly, a key management center KMC judges whether the terminals are registered or not and whether the updated group exists or not and according to a judgment result, group keys of the terminals are issued to a home location register PHR; fourthly, the home location register PHR issues group information needing to be updated and the key set of the group to a dispatch server PDS, and the dispatch server PDS pages the terminals and sends updating messages of the group information to the terminals through base stations; fifthly, the terminals update the group information and then send responses back; sixthly, key updating messages are sent to the terminals, if code modules of the terminals verify that the received key updating messages successfully, group key updating is finished, and response messages are sent back to the terminals; seventhly, the terminals send the key updating response messages to the dispatch server PDS through the base stations. By the adoption of the method, encrypted group calling is achieved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a dynamic reorganization method in cluster encryption communication. Background technique [0002] Dynamic reorganization is a very important function in a cluster system. Dynamic reorganization allows the authorized dispatcher to dynamically add temporary talkgroups to the mobile terminal through the air interface without reprogramming the mobile terminal. The authorized dispatcher can transfer group members from one group to another by means of adding or moving, and this change can be immediately reflected on the mobile terminal. The dynamic reorganization function allows the establishment and dissolution of temporary groups. For example: because of an urgent task, two groups of different organizations are temporarily combined into one group, and the temporary group is disbanded after the task is completed. [0003] However, when the trunking system conducts encrypted ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L29/08
Inventor 曾勇
Owner 成都三零瑞通移动通信有限公司
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