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Method and equipment for updating service key

A service key and update method technology, which is applied in the field of service key update, can solve problems affecting user viewing, device plugging, power outage, affecting mobile TV service promotion, etc., and achieves the effect of improving user experience

Inactive Publication Date: 2011-05-04
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the application scenarios applicable to the mobile TV service, user equipment such as terminals will often be plugged and unplugged, and the power will be cut off; and the success rate of obtaining the service key is low, so that it will take several minutes to obtain the service key each time; To sum up, it can be seen that frequent deletion and acquisition of service keys will seriously affect users watching subscribed programs, making user experience very poor and affecting the promotion of mobile TV services

Method used

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  • Method and equipment for updating service key
  • Method and equipment for updating service key
  • Method and equipment for updating service key

Examples

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Embodiment Construction

[0037] As described in the background technology, in order to solve the problem that the service key is frequently deleted in the prior art, which makes the user experience poor, the embodiment of the present invention proposes a service key update method, by using the service key update method After the device is reset, the deletion time of the service key can be delayed, so that the user has sufficient time to obtain the service key again, thereby significantly improving the user experience.

[0038] The technical solution in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, what is described is only a part of the present invention, not the whole. Based on the present invention, all other inventions obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] A method for updating a service...

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Abstract

The embodiment of the invention discloses a method for updating a service key. The method comprises that: after a terminal is reset, the terminal reacquires the service key, and the terminal is timed according to the set time length or the decryption times of a program key; if the terminal does not reacquire the service key, when the timing result reaches the preset deletion time, the terminal deletes the original service key; when the timing result does not reach the preset deletion time, the terminal continuously uses the original service key to decrypt the data stream; and if the terminal reacquires the service key, the terminal decrypts the data stream by using a new service key. In the embodiment of the invention, by delaying the deletion time of the service key after the equipment is reset, a user has sufficient time for reacquiring the service key so that the use experience of the user is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a service key update method and equipment. Background technique [0002] With the rapid development of mobile communication technology, more and more mobile TV services have been used, that is, people can watch TV programs through terminals such as mobile phones; Watch TV shows on your phone. The subscription management of the broadcast-based mobile TV service is realized through encryption and decryption, that is, the program stream data is first encrypted with the program key MTK, and then the program key is encrypted with the service key MSK. If you want to watch TV programs through terminals such as mobile phones, you first need to subscribe to the service and obtain the service key; then use the service key to decrypt the program key; then use the obtained program key to decrypt the encrypted TV program streaming data; finally, the user can Watch TV programs ordered...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L29/06
Inventor 曾海涛路晓明王东贾一博罗红
Owner CHINA MOBILE COMM GRP CO LTD
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