CN103841463A - Method for controlling broadcasting of OTT by means of single-direction CA authorization - Google Patents
Method for controlling broadcasting of OTT by means of single-direction CA authorization Download PDFInfo
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- CN103841463A CN103841463A CN201410069220.XA CN201410069220A CN103841463A CN 103841463 A CN103841463 A CN 103841463A CN 201410069220 A CN201410069220 A CN 201410069220A CN 103841463 A CN103841463 A CN 103841463A
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- ott
- authorization
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Abstract
The invention discloses a method for controlling broadcasting of an OTT by means of single-direction CA authorization. The method includes the following steps that an OTT authorization package comprising an SK secret key and authorization time is generated by a CAS system; the OTT authorization package is transmitted to a set top box end; the set top box end is used for analyzing the OTT authorization package again so as to obtain and store the SK cleartext and the authorization time; the set top box end is used for decoding the CW by means of the authorized SK and judging whether program authorization expires or not by means of the authorization time. By means of the method for controlling broadcasting of the OTT by means of single-direction CA authorization, the CA authorization manner is adopted for easily controlling broadcasting of the OTT.
Description
Technical field
The present invention relates to control the technical field that OTT plays, be specifically related to a kind of method of utilizing unidirectional CA authorization control OTT to play.
Background technology
The full name of Set Top Box is called " digital TV set-top box ", it is a kind of conversion equipment that digital television signal is converted to analog signal, it is to the reduction of decoding through the image of digitalization compressed and voice signal, the video and the voice signal that produce simulation, provide high-quality TV programme by television indicator and stereo set to spectators.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and a kind of method of utilizing unidirectional CA authorization control OTT to play is provided, and can convenient, simply control OTT program request.
Consider the problems referred to above of prior art, according to an aspect disclosed by the invention, the present invention by the following technical solutions:
A method of utilizing unidirectional CA authorization control OTT to play, comprising:
Produce one by cas system and comprise SK key and the OTT authorization packets of the time of mandate;
This OTT authorization packets is sent to Set Top Box end;
Described Set Top Box end is resolved described OTT authorization packets again, to obtain SK expressly and the mandate time, and SK plaintext and mandate time is stored;
The SK deciphering CW of described Set Top Box end utilization mandate, utilizes the mandate time to judge whether program mandate expires.
In order to realize better the present invention, further technical scheme is:
According to one embodiment of the invention, described CA is in the situation without card CA, Set Top Box does not have smart card, and described SK plaintext and mandate time are that the data format (as: including but not limited to the cryptographic algorithm such as AES) with certain encryption is stored in Set Top Box Flash.
According to one embodiment of the invention, described Set Top Box is not in the situation that storing smart card into, and described SK plaintext and mandate time are stored in Set Top Box Flash.
According to one embodiment of the invention, described Set Top Box end comprises the mandate time check to OTT authorization packets.
According to one embodiment of the invention, described set top box through network obtains current time, carry out that OTT point has judged whether that OTT authorizes sowing time or current time whether in OTT authorization packets time range, if yes then enter program request identifying procedure, if not pointing out OTT program request unauthorized.
According to one embodiment of the invention, whether the program request authentication of described OTT authorization packets beats storehouse with current time together with the code in the mandate time.
The present invention can also be:
According to one embodiment of the invention, described Set Top Box is in the situation of android Intelligent set-top box, is authorizing or expired in the mandate time in the situation that, do not allow Android Media playback interface to carry out audio frequency and video broadcasting without OTT.
Compared with prior art, one of beneficial effect of the present invention is:
A kind of method of utilizing unidirectional CA authorization control OTT to play of the present invention, simple realization, by CA authorization, is controlled OTT and is play.
Accompanying drawing explanation
For clearer explanation present specification embodiment or technical scheme of the prior art, to the accompanying drawing of required use in the description of embodiment or prior art be briefly described below, apparently, the accompanying drawing the following describes is only the reference to some embodiment in present specification, for those skilled in the art, in the situation that not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows a kind of according to an embodiment of the invention schematic flow sheet of the method for utilizing unidirectional CA authorization control OTT broadcasting.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
CA authorizes, and produces SK key and mandate time by cas system, after EMM packing, sends to backend machine top box.Set Top Box is resolved EMM, stores in smart card (CA stores Set Top Box Flash into without card) by obtaining SK plaintext and mandate time after special algorithm computing.The SK deciphering CW of Set Top Box utilization mandate, utilizes the mandate time to judge whether program mandate expires.
OTT program request, based on the Video service of open the Internet, by the video frequency program of internet transmission.
Fig. 1 shows a kind of according to an embodiment of the invention schematic flow sheet of the method for utilizing unidirectional CA authorization control OTT broadcasting.Whole process is as shown in Figure 1, and this authentication control method is fairly simple, convenient.
A method of utilizing unidirectional CA authorization control OTT to play, can adapt to various CA:
1, front end CA is the mandate that OTT sets a special product bag or program bag, is called OTT authorization packets.As: the product bag of appointed product Bale No. 100 is that OTT authorizes.To opening user's card number of OTT business, order this product bag mandate, and control the use of OTT function with the mandate time, so that pickup services is taken;
2, Set Top Box end, Set Top Box receives to authorize and stores smart card into.In order to guarantee that the mandate time is not tampered, add mandate time check.Show that by CA the interface of smart card mandate reads mandate Bale No. and mandate time.Find OTT authorize Bale No., after will use this mandate time.If do not find this mandate Bale No., authorize without OTT;
3, set top box through network obtains current time (current time obtain manner is multiple, also can obtain according to TDT table in TS), carry out that OTT point has judged whether that OTT authorizes sowing time or current time whether in OTT authorization packets time range, if yes then enter program request identifying procedure, if not prompting " OTT program request unauthorized ";
4, in order to guarantee fail safe as far as possible, OTT program request authentication section is beaten storehouse, will judge whether that OTT authorizes, and the whether code within the mandate time of current time, puts together and beats storehouse, and this storehouse is safeguarded by core design personnel;
5 if android Intelligent set-top box will be controlled OTT to be play, because the client terminal device of other program requests may be installed.To play and need to process at bottom in order to control to authorize, expired without OTT mandate or mandate time, directly do not allow Android Media playback interface to carry out audio frequency and video broadcasting.And provide corresponding return value, control prompting accordingly.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, identical similar part cross-references between each embodiment.
" embodiment ", " another embodiment ", " embodiment " that spoken of in this manual, etc., refer to specific features, structure or the feature described in conjunction with this embodiment and be included at least one embodiment that the application's generality describes.In specification, multiple local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with arbitrary embodiment, what advocate is to realize this feature, structure or feature in conjunction with other embodiment also to fall within the scope of the invention.
Although with reference to multiple explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and execution modes, and these are revised and within execution mode will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (7)
1. a method of utilizing unidirectional CA authorization control OTT to play, is characterized in that, comprising:
Produce one by cas system and comprise SK key and the OTT authorization packets of the time of mandate;
This OTT authorization packets is sent to Set Top Box end;
Described Set Top Box end is resolved described OTT authorization packets again, to obtain SK expressly and the mandate time, and SK plaintext and mandate time is stored;
The SK deciphering CW of described Set Top Box end utilization mandate, utilizes the mandate time to judge whether program mandate expires.
2. the method for utilizing unidirectional CA authorization control OTT to play according to claim 1, is characterized in that, described Set Top Box is in the situation that storing smart card into, and described SK plaintext and mandate time are stored in this and store on smart card.
3. the method for utilizing unidirectional CA authorization control OTT to play according to claim 1, it is characterized in that, described CA is that in the situation without card CA, Set Top Box does not have smart card, and described SK plaintext and mandate time are stored in Set Top Box Flash with the data format of encrypting.
4. the method for utilizing unidirectional CA authorization control OTT to play according to claim 1, is characterized in that, described Set Top Box end comprises the mandate time check to OTT authorization packets.
5. the method for utilizing unidirectional CA authorization control OTT to play according to claim 1, it is characterized in that, described set top box through network obtains current time, carry out that OTT point has judged whether that OTT authorizes sowing time or current time whether in OTT authorization packets time range, if yes then enter program request identifying procedure, if not pointing out OTT program request unauthorized.
6. the method for utilizing unidirectional CA authorization control OTT to play according to claim 1, is characterized in that, whether the program request authentication of described OTT authorization packets beats storehouse with current time together with the code in the mandate time.
7. the method for utilizing unidirectional CA authorization control OTT to play according to claim 1, it is characterized in that, described Set Top Box is in the situation of android Intelligent set-top box, is authorizing or expired in the mandate time in the situation that, do not allow Android Media playback interface to carry out audio frequency and video broadcasting without OTT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410069220.XA CN103841463B (en) | 2014-02-27 | 2014-02-27 | A kind of method played using unidirectional CA authorization controls OTT |
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| CN201410069220.XA CN103841463B (en) | 2014-02-27 | 2014-02-27 | A kind of method played using unidirectional CA authorization controls OTT |
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| CN103841463A true CN103841463A (en) | 2014-06-04 |
| CN103841463B CN103841463B (en) | 2017-10-13 |
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| CN104079994A (en) * | 2014-07-07 | 2014-10-01 | 四川金网通电子科技有限公司 | Authorization system and method based on set top box card-free CA |
| CN105472476A (en) * | 2015-12-08 | 2016-04-06 | 福建新大陆通信科技股份有限公司 | Method and device for reminding authorization expiration of paid programs of set-top box in real time |
| CN107241133A (en) * | 2017-06-14 | 2017-10-10 | 华安星科（北京）信息技术有限公司 | A kind of soft card user terminal device of the Big Dipper and system |
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| CN104079994A (en) * | 2014-07-07 | 2014-10-01 | 四川金网通电子科技有限公司 | Authorization system and method based on set top box card-free CA |
| CN105472476A (en) * | 2015-12-08 | 2016-04-06 | 福建新大陆通信科技股份有限公司 | Method and device for reminding authorization expiration of paid programs of set-top box in real time |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103841463B (en) | 2017-10-13 |
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