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Service key transmission method and system

A technology of a service key and a transmission method, which is applied in the field of mobile multimedia broadcasting data security, can solve the problems of deviation in service key identification, consumers cannot enjoy services, mobile multimedia terminal UE cannot obtain service keys, etc., and achieves enhanced reliability. sexual effect

Inactive Publication Date: 2009-11-18
季纯静 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Through the above existing technology, if the service key management system CAS transmits the service key identification process to the service center NAF, an unpredictable error occurs, resulting in the service center not having or saving the service key identification and the service key management system. The deviation of the service key identification will make the mobile multimedia terminal UE unable to obtain the service key, so that consumers cannot enjoy the services they should enjoy

Method used

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  • Service key transmission method and system
  • Service key transmission method and system
  • Service key transmission method and system

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Embodiment Construction

[0044] The service key transmission method and system provided by the present invention have an inventive idea that before the service center NAF pushes a new service key to the mobile multimedia terminal UE, it checks whether all services have updated service key identifiers, and if there is Some services lack updated service key identifiers, and actively request the service key management system CAS to obtain updated service key identifiers for these services, and then push new service keys for all services to the UE before the new service key is used. When the UE requests to use the service and requests the service key from the CAS through the NAF, if the service key identified by the service key cannot be requested by the NAF, it will re-request the service key identification of the service from the CAS according to the service identification of the service requested by the UE, Accordingly, the corresponding service key is obtained and returned to the UE.

[0045] The tech...

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Abstract

The invention discloses a service key transmission method and a system, comprising a service center and a service key management system. The method comprises the following steps: before the service center pushes a new service key to a movable multi-media terminal UE, if a plurality of services are checked to be lack of updated service key marks, then the service center initiatively requests for obtaining the updated service key marks of the services to the service key management system; when the service center receives the request of the UE to one service, if the corresponding service key can not be obtained from the service key management system according to the service key mark of the service carried in the request, then the service center requests for obtaining the corresponding service key to the service key management system and returns the service key to the UE according to the service mark of the service requested by the UE. The service key transmission method and the system enhance the reliability and safety of the whole service key management system, and ensure that customers fully enjoy the services which shall be enjoyed.

Description

technical field [0001] The invention relates to mobile multimedia broadcasting data security technology, in particular to a transmission method and system of a service key. Background technique [0002] The key management system of the mobile TV service involves mobile multimedia terminals (i.e. user equipment UE, User Equipment), service center (i.e. network application function entity NAF, Network Application Function) and service key management system (i.e. conditional access system CAS, Conditional AccessSystem) three nodes. Among them, the mobile multimedia terminal and the service center can generate a user key for user identity authentication through a generic bootstrapping architecture (GBA, Generic Bootstrapping Architecture), and the service center uses the user key to encrypt the service key, and transmits the encrypted key through the mobile communication network. The service key is transmitted to the mobile multimedia terminal. The mobile TV service based on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04H60/23H04H60/91H04W12/041
CPCH04W12/04H04W12/0431H04W12/041
Inventor 陈文宁
Owner 季纯静