CN109474840A - The multicast channel method for scrambling and system that encryption double mode coexists inside and outside a kind of - Google Patents
The multicast channel method for scrambling and system that encryption double mode coexists inside and outside a kind of Download PDFInfo
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- CN109474840A CN109474840A CN201710801189.8A CN201710801189A CN109474840A CN 109474840 A CN109474840 A CN 109474840A CN 201710801189 A CN201710801189 A CN 201710801189A CN 109474840 A CN109474840 A CN 109474840A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6405—Multicasting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
- H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
Abstract
A kind of multicast channel method for scrambling that inside and outside encryption double mode coexists, the following steps are included: security level grade of the channel central production control unit platform according to channel, generates the corresponding multicast channel forwarding task requests for carrying encryption parameter and is sent to multicast forward server；Multicast forward server carries out interior encryption or outer encryption to multicast channel video data according to the encryption parameter, and head mark is arranged in encrypted group broadcast channel video data；Client player receives encrypted group broadcast channel video data, and is decrypted, is played according to head mark.The present invention also provides the multicast channel scrambling systems that encryption double mode coexists inside and outside one kind to be scrambled for the channel of common safety requirements using interior cipher mode；For advanced security rank require channel scrambled by the way of outer encryption, both ensure that video content is not played illegally, at the same also achieve uplink network can not connection in the case where, the channel of common security level can also play video.
Description
Technical field
The present invention relates to Interactive Internet TV IPTV technical field, more particularly in single-direction and dual-direction network environment, video
The method for scrambling and system of data.
Background technique
In the prior art, using Multicast transport multicast channel video data, usually there are two types of schemes:
1, multicast clear stream transmits: multicast channel data do not carry out any scrambling processing, are transmitted directly to client player,
All players for taking multicast address, which do not need decryption, to be played.
2, all channels are encrypted, and key needs are obtained from Key Management server, and this requires clients to broadcast
Frequency can not can be played in the case where the obstructed downlink network connection of uplink network by access key management server at any time by putting device
Road.
Summary of the invention
In order to solve the shortcomings of the prior art, the purpose of the present invention is to provide encrypt double mode inside and outside one kind to coexist
Multicast channel method for scrambling and system scrambled using interior cipher mode, to advanced security for the channel of common safety requirements
Rank require channel scrambled by the way of outer encryption, uplink network can not connection in the case where, common security level
Channel can play.
To achieve the above object, the multicast channel scrambling system that inside and outside encryption double mode provided by the invention coexists, including,
Channel central production control unit platform, multicast forward server, Key Management server and client player, wherein
Channel central production control unit platform generates corresponding according to the security level grade of the channel of user preset
Multicast channel forward task requests；
The multicast forward server parses multicast channel forwarding task requests, obtains source address, encryption
Parameter, and according to encryption parameter, multicast channel video data is encrypted using interior encryption mode or outer encryption mode；
The Key Management server receives the key version number and close of channel central production control unit platform transmission
Key simultaneously carries out preservation and management；Key is sent to the client terminal playing by the decoding request for receiving the client player
Device；
The client player parses the head mark of encrypted group broadcast channel video data, according to encryption
Mode is decrypted encrypted group broadcast channel video data, plays.
Further, channel central production control unit platform, the multicast channel forwarding task requests generated carry
Encryption parameter；When the security level grade of the channel is common security level, the encryption parameter includes interior encryption level
Class parameter；When the security level grade of the channel is advanced security rank, the encryption parameter includes outer encryption level
Class parameter, key version number and key.
Further, key version number and key are sent to described close by channel central production control unit platform
Key management server.
Further, the multicast forward server sets the head mark of encrypted multicast channel video data
It is set to interior encryption mode or sets outer encryption mode for the head mark of encrypted multicast channel video data.
Further, the client player identifies the head of encrypted group broadcast channel video data and judges,
When the head of multicast channel video data is identified as interior encryption mode, using built-in key to encrypted group broadcast channel video data
It is decrypted；When the head of multicast channel video data is identified as outer encryption mode, sent out to the Key Management server
The decoding request information for carrying key version number and logging on authentication is sent, obtains outer encrypted decryption key to encrypted group broadcast channel video
Data deciphering.
To achieve the above object, the multicast channel method for scrambling that inside and outside encryption double mode provided by the invention coexists, including
Following steps,
1) channel central production control unit platform generates corresponding carrying encryption parameter according to the security level grade of channel
Multicast channel forwarding task requests are sent to multicast forward server；
2) multicast forward server carries out interior encryption or outer encryption to multicast channel video data according to the encryption parameter,
And head is set in encrypted group broadcast channel video data and is identified；
3) client player receives encrypted group broadcast channel video data, and is decrypted, is broadcast according to head mark
It puts.
Further, the step 1) further comprises,
When the security level grade is common security level, what the multicast channel forwarding task requests of generation carried adds
Close parameter includes interior encryption level class parameter；
When the security level grade is advanced security rank, the encryption of the multicast channel forwarding task requests carrying
Parameter includes outer encryption level class parameter, key version number and key.
Further, when the security level grade is advanced security rank, channel central production control unit platform
Key version number and key are sent to Key Management server.
Further, the step 2) further comprises,
Multicast forward server parses the multicast channel forwarding task requests for carrying encryption parameter, obtains encryption ginseng
Several and channel source address；
According to channel source address, multicast channel video data is downloaded；
Confirmed according to the internal encryption type of encryption parameter, interior encryption is carried out to multicast channel video data, will be encrypted
The head mark of multicast channel video data afterwards is set as interior encryption mode.
Further, the step 2) further comprises,
Multicast forward server parses the multicast channel forwarding task requests for carrying encryption parameter, obtains encryption ginseng
Several and channel source address；
According to channel source address, multicast channel video data is downloaded；
Confirmed according to the external encryption type of encryption parameter, outer encryption is carried out to multicast channel video data, will be encrypted
The head mark of multicast channel video data afterwards is set as outer encryption mode.
Further, the step 3) further comprises,
When the head of encrypted group broadcast channel video data is identified as interior encryption mode, built in the client player utilization
Key pair encryption multicast channel video data is decrypted, plays.
Further, the step 3) further comprises,
The head of encrypted group broadcast channel video data is identified as outer encryption mode, and the client player is to the key
Management server sends the decoding request information for carrying key version number and logging on authentication；Outer encrypted decryption key is obtained to encryption
The decryption of multicast channel video data.
The multicast channel method for scrambling and system that inside and outside encryption mode of the invention coexists, for the frequency of common safety requirements
Road, using interior cipher mode scramble, to advanced security rank require channel scrambled by the way of outer encryption, uplink network without
In the case where method connection, the channel of common security level can be played；It is used using Advanced Encryption Standard (AES), key
Distribute and verified using electronics CA (user credential) to protect content not played illegally in https-secure channel.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, and with it is of the invention
Embodiment together, is used to explain the present invention, and is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the multicast channel scrambling system block diagram that inside and outside encryption mode according to the present invention coexists；
Fig. 2 is the multicast channel method for scrambling flow chart that inside and outside encryption mode according to the present invention coexists；
Fig. 3 is interior encryption mode method flow diagram according to the present invention；
Fig. 4 is outer encryption mode method flow chart according to the present invention.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Fig. 1 is the multicast channel scrambling system block diagram that inside and outside encryption mode according to the present invention coexists, as shown in Figure 1, this
The multicast channel scrambling system that the inside and outside encryption mode of invention coexists, including, channel central production control unit platform 101, multicast turn
Send out server 102, Key Management server 103 and client player 104, wherein
Channel central production control unit platform 101 receives the preset channel that user inputs according to business demand
Security level grade, and generate the corresponding multicast channel forwarding task requests for carrying encryption parameter and be sent to multicast forwarding service
Device 102.
In the present invention, if the security level grade that channel central production control unit platform 101 receives is common safety level
Not, then the multicast channel forwarding task requests generated, the encryption parameter carried includes interior encryption level class parameter；If connect
The security level grade received is advanced security rank, then the multicast channel forwarding task requests generated, the encryption ginseng carried
Number includes outer encryption level class parameter, key version number and key, and key version number and key are sent to key pipe
Manage server 103.
Multicast forward server 102 receives the group for the carrying encryption parameter that channel central production control unit platform 101 issues
Channel forwarding task requests are broadcast, and are parsed, source address, encryption parameter are obtained；Multicast channel is obtained according to source address
Video data, and according to encryption parameter, it is encrypted using interior encryption mode or outer encryption mode；By encrypted multicast
Channel video data is transmitted to corresponding client player 104.
It, will if multicast forward server 102 if in encryption parameter including interior encryption level class parameter in the present invention
The head mark of encrypted multicast channel video data is set as interior encryption mode.The interior encrypted multicast channel of encryption mode
Video data, head mark include: inside and outside encryption identification and encryption identification；Wherein, in being indicated when inside and outside encryption identification is 01
Encryption mode indicates outer encryption mode when being 02；Encryption identification indicates not encrypt when being 00；Encryption is indicated when being 01.
It, will be encrypted if in encryption parameter including outer encryption level class parameter, key version number and key
The head mark of multicast channel video data is set as outer encryption mode.Use the multicast channel video after outer encryption mode encryption
Data, head mark includes: inside and outside encryption identification, encryption identification and key version number；Wherein, when inside and outside encryption identification is 01
Encryption mode in indicating indicates outer encryption mode when being 02；Encryption identification indicates not encrypt when being 00；It indicates to add when being 01
It is close；Key version number is 4 bytes, such as 000A.
Key Management server 103, the key version number that received channel central production control unit platform 101 is sent and
Key and preservation and management；The request of client player 104 is received, and is sent to key after being verified to logging on authentication
Client player 104.
Client player 104 receives the encrypted group broadcast channel video data that multicast forward server 102 is sent, solution
Its head mark is analysed, encryption mode is judged, encrypted group broadcast channel video data is decrypted according to judging result, is broadcast
It puts.
Client player 104 of the invention then be used directly interior if the head parsed is identified as interior encryption mode
It sets the decryption of key pair encryption multicast channel video data, play；If the head mark parsed includes outer encryption mode and close
The decoding request information for carrying key version number and logging on authentication is then sent to key management by key version number in a manner of https
Server 103 obtains outer encrypted decryption key to the decryption of encrypted group broadcast channel video data, broadcasting.
Fig. 2 is the multicast channel method for scrambling flow chart that inside and outside encryption mode according to the present invention coexists, below with reference to
Fig. 2, the multicast channel method for scrambling that inside and outside encryption mode of the invention coexists are described in detail.
Firstly, channel central production control unit platform 101 receives the channel that user inputs according to business demand in step 201
Security level grade；
In this step, the security level grade of received channel, including, common security level and advanced security rank.
In step 202, the security level grade of channel is judged, carries out step 203 if it is common security level,
Step 204 is carried out if it is advanced security rank.
In step 203, after multicast forward server 102 encrypts multicast channel video data using interior encryption mode
It is sent to client player 104.
In step 204, after multicast forward server 102 encrypts multicast channel video data using outer encryption mode
It is sent to client player 104.
In step 205, client player 104 receives the encrypted group broadcast channel video that multicast forward server 102 is sent
Data are simultaneously decrypted, play.
Fig. 3 is interior encryption mode method flow diagram according to the present invention, below with reference to Fig. 3, to interior encryption of the invention
Mode method is described in detail.
Firstly, channel central production control unit platform 101 sends out interior encrypted group broadcast channel forwarding task requests in step 301
Give multicast forward server 102；Wherein, it carries in interior encrypted group broadcast channel forwarding task requests comprising interior encryption level etc.
The encryption parameter of grade parameter.
In step 302, multicast forward server 102 parses interior encrypted group broadcast channel forwarding task requests, obtains
Encryption parameter and channel source address.
In step 303, multicast forward server 102 downloads multicast channel video data according to channel source address；
In step 304, multicast forward server 102 is confirmed according to the internal encryption type of encryption parameter, to multicast frequency
Road video data encrypts in carrying out, and sets interior encryption mode for the head mark of encrypted multicast channel video data；It will
Encrypted multicast channel video data is sent to corresponding client player 104.Wherein, 102 turns of multicast forward server
The relevant parameter field of the destination address of hair and port in multicast channel forwarding task requests.
The interior encrypted multicast channel video data of encryption mode, head mark include: inside and outside encryption identification and encryption
Mark；Wherein, encryption mode in indicating when inside and outside encryption identification is 01, indicates outer encryption mode when being 02；Encryption identification is
It indicates not encrypt when 00；Encryption is indicated when being 01.
In step 305, client player 104 parses received encrypted group broadcast channel video data, in confirmation
Encryption type, using built-in key to the decryption of encrypted group broadcast channel video data, broadcasting.
Fig. 4 is outer encryption mode method flow chart according to the present invention, below with reference to Fig. 4, to outer encryption of the invention
Mode method is described in detail.
Firstly, channel central production control unit platform 101 sends out outer encryption multicast channel forwarding task requests in step 401
Multicast forward server 102 is given, while sending Key Management server 103 for key version number and key；Wherein, outside
Adding including outer encryption level class parameter, key version number and key is carried in encrypted group broadcast channel forwarding task requests
Close parameter.
In step 402, the external encrypted group broadcast channel of multicast forward server 102 forwarding task requests are parsed, are obtained
Encryption parameter and channel source address.
In step 403, multicast forward server 102 downloads multicast channel video data according to channel source address；
In step 404, multicast forward server 102 is confirmed according to the external encryption type of encryption parameter, and according to adding
Close parameter carries out outer encryption, and the head of multicast channel video data after encryption using key pair multicast channel video data
Portion is set as outer encryption mode head mark；Corresponding client player is sent by encrypted multicast channel video data
104.Wherein, the destination address and port that multicast forward server 102 forwards are corresponding in multicast forwarding task requests
Parameter field.
Using the multicast channel video data after outer encryption mode encryption, head mark includes: inside and outside encryption identification, adds
Secret mark knows and key version number；Wherein, encryption mode in indicating when inside and outside encryption identification is 01 indicates outer and encrypts mould when being 02
Formula；Encryption identification indicates not encrypt when being 00；Encryption is indicated when being 01；Key version number is 4 bytes, such as 000A.
In step 405, client player 104 parses received encrypted group broadcast channel video data, and confirmation is outer
The decoding request information for carrying key version number and logging on authentication is sent to Key Management server 103 by encryption type；Key
Management server 103 parses received decoding request information, after being verified according to key version number to logging on authentication
Key is sent to client player 104.
In step 406, client player 104 is decrypted using received key pair encryption multicast channel video data, is broadcast
It puts.
Those of ordinary skill in the art will appreciate that: the foregoing is only a preferred embodiment of the present invention, and does not have to
In the limitation present invention, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art
For, still can to foregoing embodiments record technical solution modify, or to part of technical characteristic into
Row equivalent replacement.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all include
Within protection scope of the present invention.
Claims (14)
1. a kind of multicast channel scrambling system that inside and outside encryption double mode coexists, including, channel central production control unit platform, multicast
Forwarding server, Key Management server and client player, which is characterized in that
Channel central production control unit platform generates corresponding group according to the security level grade of the channel of user preset
Broadcast channel forwarding task requests；
The multicast forward server parses multicast channel forwarding task requests, obtains source address, encryption ginseng
Number, and according to encryption parameter, multicast channel video data is encrypted using interior encryption mode or outer encryption mode；
The Key Management server, the key version number for receiving the transmission of channel central production control unit platform and key are simultaneously
Carry out preservation and management；Key is sent to the client player by the decoding request for receiving the client player；
The client player parses the head mark of encrypted group broadcast channel video data, according to encryption mode
Encrypted group broadcast channel video data is decrypted, is played.
2. the multicast channel scrambling system that inside and outside encryption double mode according to claim 1 coexists, which is characterized in that described
Channel central production control unit platform, the multicast channel forwarding task requests generated carry encryption parameter；When the channel
When security level grade is common security level, the encryption parameter includes interior encryption level class parameter；When the channel
Security level grade be advanced security rank when, the encryption parameter include outer encryption level class parameter, key version number with
And key.
3. the multicast channel scrambling system that inside and outside encryption double mode according to claim 1 coexists, which is characterized in that described
Channel central production control unit platform, is sent to the Key Management server for key version number and key.
4. the multicast channel scrambling system that inside and outside encryption double mode according to claim 1 coexists, which is characterized in that described
Multicast forward server sets interior encryption mode for the head mark of encrypted multicast channel video data or will encrypt
The head mark of multicast channel video data afterwards is set as outer encryption mode.
5. the multicast channel scrambling system that inside and outside encryption double mode according to claim 1 coexists, which is characterized in that described
Client player judges the head mark of encrypted group broadcast channel video data, when multicast channel video data
When head is identified as interior encryption mode, encrypted group broadcast channel video data is decrypted using built-in key；Work as multicast channel
The head of video data is identified as outer encryption mode, sends to the Key Management server and carries key version number and login
The decoding request information of voucher obtains outer encrypted decryption key and decrypts to encrypted group broadcast channel video data.
6. a kind of multicast channel method for scrambling that inside and outside encryption double mode coexists, comprising the following steps:
1) channel central production control unit platform generates the corresponding multicast for carrying encryption parameter according to the security level grade of channel
Channel forwarding task requests are sent to multicast forward server；
2) multicast forward server carries out interior encryption to multicast channel video data according to the encryption parameter or encrypts outside, and
Head is arranged when encrypted group broadcast channel video data to identify；
3) client player receives encrypted group broadcast channel video data, and is decrypted, is played according to head mark.
7. the multicast channel method for scrambling that inside and outside encryption double mode according to claim 6 coexists, which is characterized in that described
Step 1) further comprises,
When the security level grade is common security level, the encryption that the multicast channel forwarding task requests of generation carry is joined
Number includes interior encryption level class parameter；
When the security level grade is advanced security rank, the encryption parameter of the multicast channel forwarding task requests carrying
Including outer encryption level class parameter, key version number and key.
8. the multicast channel method for scrambling that inside and outside encryption double mode according to claim 7 coexists, which is characterized in that work as institute
When to state security level grade be advanced security rank, channel central production control unit platform sends out key version number and key
Give Key Management server.
9. the multicast channel method for scrambling that inside and outside encryption double mode according to claim 6 coexists, which is characterized in that described
Step 2 further comprises,
Multicast forward server to carry encryption parameter multicast channel forwarding task requests parse, obtain encryption parameter and
Channel source address；
According to channel source address, multicast channel video data is downloaded；
Confirmed according to the internal encryption type of encryption parameter, interior encryption is carried out to multicast channel video data, it will be encrypted
The head mark of multicast channel video data is set as interior encryption mode.
10. the multicast channel method for scrambling that inside and outside encryption double mode according to claim 9 coexists, which is characterized in that institute
It states and is confirmed according to the internal encryption type of encryption parameter, interior encryption is carried out to multicast channel video data, by encrypted group
The head for broadcasting channel video data identifies the step of being set as interior encryption mode, including,
Confirm to include interior encryption level class parameter in encryption parameter；
Interior encryption is carried out to multicast channel video data；
The head mark of encrypted multicast channel video data is set are as follows: interior encryption identification and encryption identification.
11. the multicast channel method for scrambling that inside and outside encryption double mode according to claim 6 coexists, which is characterized in that institute
Stating step 2 further comprises,
Multicast forward server to carry encryption parameter multicast channel forwarding task requests parse, obtain encryption parameter and
Channel source address；
According to channel source address, multicast channel video data is downloaded；
Confirmed according to the external encryption type of encryption parameter, outer encryption is carried out to multicast channel video data, it will be encrypted
The head mark of multicast channel video data is set as outer encryption mode.
12. the multicast channel method for scrambling that inside and outside encryption double mode according to claim 11 coexists, which is characterized in that institute
It states and is confirmed according to the external encryption type of encryption parameter, outer encryption is carried out to multicast channel video data, by encrypted group
The head for broadcasting channel video data identifies the step of being set as outer encryption mode, including,
Confirm to include outer encryption level class parameter in encryption parameter；
Outer encryption is carried out to multicast channel video data；
The head mark of encrypted multicast channel video data is set are as follows: additional secret mark knowledge, encryption identification and key version number.
13. the multicast channel method for scrambling that inside and outside encryption double mode according to claim 6 coexists, which is characterized in that institute
Stating step 3) further comprises,
When the head of encrypted group broadcast channel video data is identified as interior encryption mode, the client player utilizes built-in key
Encrypted group broadcast channel video data is decrypted, is played.
14. the multicast channel method for scrambling that inside and outside encryption double mode according to claim 6 coexists, which is characterized in that institute
Stating step 3) further comprises,
When the head of encrypted group broadcast channel video data is identified as outer encryption mode, the client player is to the key pipe
It manages server and sends the decoding request information for carrying key version number and logging on authentication；Outer encrypted decryption key is obtained to encrypted set
Broadcast channel video data decryption.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1954045A1 (en) * | 2007-01-30 | 2008-08-06 | BRITISH TELECOMMUNICATIONS public limited company | Method and system for providing video content |
| CN101447842A (en) * | 2008-09-27 | 2009-06-03 | 百视通网络电视技术发展有限责任公司 | Distributed digital rights management (DRM) system adopting 2-level framework |
| CN104661082A (en) * | 2015-02-04 | 2015-05-27 | 深圳创维数字技术有限公司 | Program source data protecting method and relating devices |
-
2017
- 2017-09-07 CN CN201710801189.8A patent/CN109474840B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1954045A1 (en) * | 2007-01-30 | 2008-08-06 | BRITISH TELECOMMUNICATIONS public limited company | Method and system for providing video content |
| CN101447842A (en) * | 2008-09-27 | 2009-06-03 | 百视通网络电视技术发展有限责任公司 | Distributed digital rights management (DRM) system adopting 2-level framework |
| CN104661082A (en) * | 2015-02-04 | 2015-05-27 | 深圳创维数字技术有限公司 | Program source data protecting method and relating devices |
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