CN107734389A - Information processing method and digital reception device - Google Patents
Information processing method and digital reception device Download PDFInfo
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- CN107734389A CN107734389A CN201711043578.5A CN201711043578A CN107734389A CN 107734389 A CN107734389 A CN 107734389A CN 201711043578 A CN201711043578 A CN 201711043578A CN 107734389 A CN107734389 A CN 107734389A
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- program
- signal
- processor
- descrambling information
- reception device
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
-
- 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]
Abstract
The invention provides a kind of information processing method and digital reception device, it is related to digital TV technology.The information processing method is applied to digital reception device, and the information processing method includes：The processor of the digital reception device sends the first program descrambling information to the encryption chip of the digital reception device；The second program descrambling information after being encrypted is encrypted in the first program descrambling information by the encryption chip, and the second program descrambling information is sent to the processor；The processor is based on the second program descrambling information and obtains descrambled control words corresponding to the actual program signal, and the descrambled control words are sent to the descrambler of the digital reception device；The descrambler is descrambled based on the descrambled control words to the actual program signal, obtains raw digital signal corresponding to the actual program signal.The information that the information processing method can be used in the control word descrambled is not revealed, and lifts security.
Description
Technical field
The present invention relates to digital TV technology, is set in particular to a kind of information processing method and digital received
It is standby.
Background technology
Existing digital television conditional access system, it is close by using smart card to preserve the mandate of user on the set-top box
The information such as code, the descrambling of DTV scrambled signals needs to descramble to condition receiving system application, and descrambling the key needed is
Decryption and extraction are completed within a smart card, are then given to the descrambling that set top box completes TV signal.
During the descrambling for completing TV signal, the key for obtaining descrambling is that the key of encryption is sent by set top box
To smart card, smart card completion decrypts descrambled control words and sends set top box to.And criminal can pass through set top box and intelligence
The circuit of energy cartoon news, gets descrambled control words, realizes and descrambled control words are cracked, risk is brought to operator.
The content of the invention
In view of this, it is above-mentioned to solve the embodiments of the invention provide a kind of information processing method and digital reception device
Problem.
To achieve these goals, the technical solution adopted by the present invention is as follows：
In a first aspect, the embodiments of the invention provide a kind of information processing method, applied to digital reception device, the side
Method includes：The processor of the digital reception device sends the first program descrambling information to the encryption of the digital reception device
Chip；The second program descrambling information after being encrypted is encrypted in the first program descrambling information by the encryption chip,
And the second program descrambling information is sent to the processor；The processor is obtained based on the second program descrambling information
Descrambled control words corresponding to the actual program signal are taken, and the descrambled control words are sent to the digital reception device
Descrambler；The descrambler is descrambled based on the descrambled control words to the actual program signal, works as prosthomere described in acquisition
Raw digital signal corresponding to mesh signal.
As an alternative embodiment, in above- mentioned information processing method, the processor of the digital reception device will
First program descrambling information is sent to the encryption chip of the digital reception device, including：The processor judges user profile
In authorized user message in whether include the authorization message of actual program signal；If so, then the processor is by the first program
Descrambling information is sent to the encryption chip.
As an alternative embodiment, in above- mentioned information processing method, the processor is judged in user profile
Before the authorization message for whether including actual program signal in authorized user message, methods described also includes：The digital received
The signal dispatcher module of equipment obtains the user profile from subscriber management server, and the user profile includes user and authorizes letter
Breath and the first program descrambling information.
As an alternative embodiment, in above- mentioned information processing method, the processor is judged in user profile
After the authorization message for whether including actual program signal in authorized user message, methods described also includes：Prompting user does not gather around
There is the mandate of the actual program signal.
As an alternative embodiment, in above- mentioned information processing method, the encryption chip is by first program
The second program descrambling information after being encrypted is encrypted in descrambling information, and the second program descrambling information is sent to institute
Processor is stated, including：The encryption chip is based on the first default decipherment algorithm and the first program descrambling information is decrypted,
Obtain control word corresponding to the first program descrambling information；The encryption chip is based on the first predetermined encryption algorithm to described the
Control word corresponding to one program descrambling information is encrypted, and obtains second program descrambling information；The encryption chip is by described
Two program descrambling informations are sent to the processor.
As an alternative embodiment, in above- mentioned information processing method, the processor is based on the second program
Descrambling information obtains descrambled control words corresponding to the actual program signal, and the descrambled control words are sent to the numeral
The descrambler of receiving device, including：The processor is based on the second default decipherment algorithm and the second program descrambling information is entered
Row decryption, the control word of plaintext is obtained, as descrambled control words corresponding to the actual program signal；The processor is by described in
Descrambled control words are sent to the descrambler of the digital reception device.
As an alternative embodiment, in above- mentioned information processing method, the descrambler is based on the descrambling and controlled
Word descrambles to the actual program signal, described after obtaining raw digital signal corresponding to the actual program signal
Method also includes：Raw digital signal corresponding to the actual program signal is sent to the digital received and set by the descrambler
Standby decoder；The decoder decodes to the raw digital signal, obtains sound corresponding to the actual program signal
Frequency signal and/or vision signal, and the audio signal and/or vision signal are exported to the digital reception device and are connected
Input-output equipment.
Second aspect, the embodiments of the invention provide a kind of digital reception device, the digital reception device includes processing
Device, the encryption chip and descrambler being connected with the processor, wherein, the processor is used for the first program descrambling information
Send to the encryption chip；The encryption chip is used for after the first program descrambling information is encrypted is encrypted
Second program descrambling information, and the second program descrambling information is sent to the processor；The processor is additionally operable to base
Descrambled control words corresponding to the actual program signal are obtained in the second program descrambling information, and by the descrambled control words
Send to the descrambler；The descrambler is used to descramble the actual program signal based on the descrambled control words,
Obtain raw digital signal corresponding to the actual program signal.
As an alternative embodiment, in above-mentioned digital reception device, the first program is descrambled and believed by the processor
Breath, which is sent to the mode of the encryption chip, to be included：The processor judges whether wrapped in the authorized user message in user profile
Include the authorization message of actual program signal；If so, then the processor sends the first program descrambling information to the encryption core
Piece.
As an alternative embodiment, in above-mentioned digital reception device, the encryption chip is by first program
The second program descrambling information after being encrypted is encrypted in descrambling information, and the second program descrambling information is sent to institute
Stating the mode of processor includes：The encryption chip is based on the first default decipherment algorithm and the first program descrambling information is carried out
Decryption, obtain control word corresponding to the first program descrambling information；The encryption chip is based on the first predetermined encryption algorithm pair
Control word corresponding to the first program descrambling information is encrypted, and obtains second program descrambling information；The encryption chip will
The second program descrambling information is sent to the processor.
Information processing method and digital reception device provided in an embodiment of the present invention, pass through the processor of digital reception device
First program descrambling information is sent to the encryption chip of digital reception device, then encryption chip is by the first program descrambling information
The second program descrambling information after being encrypted is encrypted, and second program descrambling information is sent to processor, then, place
Manage device be based on second program descrambling information obtain actual program signal corresponding to descrambled control words, and by descrambled control words send to
The descrambler of digital reception device, last descrambler are descrambled based on descrambled control words to actual program signal, are obtained current
Raw digital signal corresponding to programme signal.It is thus possible to the whole acquisition flow of descrambled control words is set to be set in digital received
Standby middle progress, and the descrambling of programme signal is realized, set top box and intelligent cartoon can be passed through by solving criminal in the prior art
The circuit of news, gets descrambled control words, realizes and descrambled control words are cracked, the problem of bringing risk to operator.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 shows the block diagram of digital reception device provided in an embodiment of the present invention；
Fig. 2 shows the flow chart of information processing method provided in an embodiment of the present invention；
Fig. 3 shows the flow chart of step S110 in information processing method provided in an embodiment of the present invention；
Fig. 4 shows the flow chart of step S120 in information processing method provided in an embodiment of the present invention；
Fig. 5 shows the flow chart of step S130 in information processing method provided in an embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be configured to arrange and design with a variety of herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.Meanwhile the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
Fig. 1 shows a kind of structured flowchart for the digital reception device that can be applied in the embodiment of the present invention.Such as Fig. 1 institutes
Show, digital reception device 100 includes memory 102, one or more (one is only shown in figure) processors 106, encryption chip
103, descrambler 104, decoder 105, signal dispatcher module 107 etc..These components pass through one or more communication bus/signal
Line 116 mutually communicates.
Memory 102 can be used for storage software program and module, such as the information processing method pair in the embodiment of the present invention
Programmed instruction/the module answered, processor 106 is stored in software program and module in memory 102 by operation, so as to hold
Row various function application and data processing, such as information processing method provided in an embodiment of the present invention.
Memory 102 may include high speed random access memory, may also include nonvolatile memory, such as one or more magnetic
Property storage device, flash memory or other non-volatile solid state memories.Processor 106 and other possible components are to storage
The access of device 102 can be carried out under the control of storage control 104.
Encryption chip 103 is used for storing and decrypting authorized user message and programme information, and encryption information again.Solution
Disturb device 104 to be used to descramble the information of scrambling, obtain original information.Decoder 105 is used to solve programme signal
Code, obtain vision signal or audio signal.The user of signal dispatcher module 107 realizes that digital reception device 100 is sent information to
The information that equipment outside outside equipment or reception is sent.
It is appreciated that the structure shown in Fig. 1 is only to illustrate, digital reception device 100 may also include more more than shown in Fig. 1
Either less component or there is the configuration different from shown in Fig. 1.Each component shown in Fig. 1 can use hardware, software
Or its combination is realized.
First embodiment
The flow chart of information processing method provided in an embodiment of the present invention as shown in Figure 2.The information processing method application
In digital reception device.Fig. 2 is referred to, the information processing method includes：
Step S110：The processor of the digital reception device sends the first program descrambling information to the digital received
The encryption chip of equipment.
For digital reception device when handling programme information, the programme signal typically received is all after being scrambled
's.Therefore, in the programme signal after receiving scrambling, program descrambling information can be obtained, then according to program descrambling information pair
Programme signal is handled.
In addition, program is carried out scrambling make the digital reception device of user when receiving programme signal, it is necessary to
The user of the authorization message of the programme signal can just be descrambled and decoded to the programme signal.
Therefore when digital reception device is handled programme signal using the first program descrambling information, it is also necessary to obtain
Authorized user message and the first program descrambling information.
Therefore before step S110, the information processing method can also include：The information of the digital reception device is received
Send out module and obtain the user profile from subscriber management server, the user profile includes authorized user message and first segment
Mesh descrambling information.
It is understood that the signal dispatcher module of digital reception device can send user's letter to subscriber management server
Breath obtains request, and subscriber management server obtains request based on user profile again and returns to user profile to the digital reception device,
Digital reception device, which receives the user profile returned, includes authorized user message and the first program descrambling information.Certainly, at this
Identification information of user etc. is stored with inventive embodiments, in digital reception device, can be specifically digital reception device
In encryption chip in be stored with the identification information of user so that digital reception device can get user profile.
In embodiments of the present invention, Fig. 3 is referred to, step S110 can include：
Step S111：The processor judges whether include actual program signal in the authorized user message in user profile
Authorization message.
Step S112：If so, then the processor sends the first program descrambling information to the encryption chip.
It is understood that the signal dispatcher module of digital reception device after user profile is got, judges that user believes
Whether the authorization message of actual program is had in authorized user message in breath., then can be with if the authorization message of actual program
Progress such as is subsequently descrambled, decoded at the operation to actual program signal.If there is no awarding for actual program in fruit authorized user message
Information is weighed, then does not continue to the operation to actual program signal.
Also, it is the authorization message for enabling users to learn no actual program, prompt action can also be carried out.Therefore,
In embodiments of the present invention, actual program whether is included in the authorized user message during the processor judges user profile to believe
Number authorization message after, the information processing method can also include：Prompting user does not possess awarding for the actual program signal
Power.The information for the mandate for not possessing actual program signal is exported to external equipment, so as to which the letter can be known to user
Breath.
When including the authorization message of actual program signal in authorized user message, processor can be by the first program solution
Disturb information and send to encryption chip and carry out follow-up processing again.
Step S120：The encryption chip the first program descrambling information is encrypted the second section after being encrypted
Mesh descrambling information, and the second program descrambling information is sent to the processor.
Encryption chip is sent out after the first program descrambling information is obtained after can handling again the first program descrambling information
Deliver to processor.
Specifically, referring to Fig. 4, step S120 can include：
Step S121：The encryption chip is based on the first default decipherment algorithm and the first program descrambling information is solved
It is close, obtain control word corresponding to the first program descrambling information.
In embodiments of the present invention, it is stored with the memory of digital reception device for decrypting the first program descrambling information
The first decipherment algorithm, first decipherment algorithm can be the decipherment algorithm of operator agreements.
It is thus possible to get control word corresponding to the first program descrambling information.
Step S122：The encryption chip is based on the first predetermined encryption algorithm to corresponding to the first program descrambling information
Control word is encrypted, and obtains second program descrambling information.
In embodiments of the present invention, be stored with the memory of digital reception device for control word is encrypted
One predetermined encryption algorithm.So as to which after control word corresponding to the first program descrambling information is obtained, the first predetermined encryption can be utilized
Control word corresponding to first program descrambling information is encrypted algorithm, the second program descrambling information after being encrypted.
Step S123：The encryption chip sends the second program descrambling information to the processor.
Step S130：The processor is based on the second program descrambling information and obtained corresponding to the actual program signal
Descrambled control words, and the descrambled control words are sent to the descrambler of the digital reception device.
After the second program descrambling information of encryption chip transmission is obtained, because second program descrambling information is encryption shape
State, it is therefore desirable to which second program descrambling information is decrypted.
In embodiments of the present invention, Fig. 5 is referred to, step S130 can include：
Step S131：The processor is based on the second default decipherment algorithm and the second program descrambling information is solved
It is close, the control word of plaintext is obtained, as descrambled control words corresponding to the actual program signal.
In embodiments of the present invention, the corresponding with the first predetermined encryption algorithm second default solution can be stored with memory
Close algorithm.It is thus possible to obtain the control word of the plaintext in second program descrambling information.The control word of the plaintext, which can be used as, to be worked as
Descrambled control words corresponding to preceding programme signal.
Step S132：The processor sends the descrambled control words to the descrambler of the digital reception device.
After the control word that the programme signal for obtaining the scrambling being used for is descrambled, processor again sends descrambled control words
To descrambler, so that descrambler can be descrambled using the descrambled control words to actual program signal.
Step S140：The descrambler is descrambled based on the descrambled control words to the actual program signal, is obtained
Raw digital signal corresponding to the actual program signal.
It is understood that after descrambler obtains descrambled control words, the descrambled control words are recycled to actual program signal
Descrambled, so as to obtain the raw digital signal of actual program signal, so that it is laggard to carry out further decoding process
Row output.
In embodiments of the present invention, the information processing method can also include：
The descrambler sends raw digital signal corresponding to the actual program signal to the digital reception device
Decoder；The decoder decodes to the raw digital signal, obtains audio corresponding to the actual program signal
Signal and/or vision signal, and the audio signal and/or vision signal are exported to being connected with the digital reception device
Input-output equipment.
It is understood that the raw digital signal that descrambler obtains after being descrambled is sent to decoder, so that solution
Code device can decode after raw digital signal is obtained to raw digital signal, obtain sound corresponding to actual program signal
Frequency signal and/or vision signal.Also, after obtaining audio signal and/or vision signal, output this to and set with the digital received
The input-output equipment of standby connection.
Second embodiment
Second embodiment of the invention provides a kind of digital reception device 100, refers to Fig. 1, this states digital reception device
100 include processor 106, the encryption chip 103 and descrambler 104 being connected with the processor 106, wherein, the processing
Device 106 is used to send the first program descrambling information to the encryption chip 103；The encryption chip 103 is used for described the
The second program descrambling information after being encrypted is encrypted in one program descrambling information, and the second program descrambling information is sent out
Deliver to the processor 106；The processor 106 is additionally operable to obtain the actual program based on the second program descrambling information
Descrambled control words corresponding to signal, and the descrambled control words are sent to the descrambler 104；The descrambler 104 is used for
The actual program signal is descrambled based on the descrambled control words, obtains original number corresponding to the actual program signal
Word signal.
In embodiments of the present invention, the processor 106 sends the first program descrambling information to the encryption chip 103
Mode include：The processor 106 judges whether include actual program signal in the authorized user message in user profile
Authorization message；If so, then the processor 106 sends the first program descrambling information to the encryption chip 103.
In embodiments of the present invention, digital reception device 100 also includes the signal dispatcher module being connected with processor 106
107.Signal dispatcher module 107 is used to obtain the user profile from subscriber management server, and the user profile includes user
Authorization message and the first program descrambling information.
In embodiments of the present invention, processor 106 is additionally operable to the mandate for prompting user not possess the actual program signal.
In embodiments of the present invention, the first program descrambling information is encrypted and added by the encryption chip 103
Second program descrambling information after close, and the mode that the second program descrambling information is sent to the processor 106 includes：
The encryption chip 103 is based on the first default decipherment algorithm and the first program descrambling information is decrypted, and obtains described the
Control word corresponding to one program descrambling information；The encryption chip 103 is based on the first predetermined encryption algorithm to first program
Control word is encrypted corresponding to descrambling information, obtains second program descrambling information；The encryption chip 103 saves described second
Mesh descrambling information is sent to the processor 106.
In embodiments of the present invention, the processor 106 is based on working as prosthomere described in second program descrambling information acquisition
Descrambled control words corresponding to mesh signal, and the descrambled control words are sent to the descrambler 104 of the digital reception device 100
Mode, including：The processor 106 is based on the second default decipherment algorithm and the second program descrambling information is decrypted,
The control word of plaintext is obtained, as descrambled control words corresponding to the actual program signal；The processor 106 is by the descrambling
Control word is sent to the descrambler 104 of the digital reception device 100.
In embodiments of the present invention, the digital reception device 100 also includes being connected with processor 106 and descrambler 104
Decoder 105.Descrambler 104 is additionally operable to send raw digital signal corresponding to the actual program signal to the numeral
The decoder 105 of receiving device 100.Decoder 105 is used to decode the raw digital signal, works as prosthomere described in acquisition
Audio signal and/or vision signal corresponding to mesh signal, and by the audio signal and/or vision signal export to the number
The input-output equipment that word receiving device 100 connects.
In summary, information processing method and digital reception device provided in an embodiment of the present invention, are set by digital received
Standby processor sends the first program descrambling information to the encryption chip of digital reception device, and then encryption chip is by first segment
The second program descrambling information after being encrypted is encrypted in mesh descrambling information, and second program descrambling information is sent to processing
Device, then, processor are based on second program descrambling information and obtain descrambled control words corresponding to actual program signal, and descrambling is controlled
Word processed is sent to the descrambler of digital reception device, last descrambler and actual program signal is solved based on descrambled control words
Disturb, obtain raw digital signal corresponding to actual program signal.It is thus possible to the whole acquisition flow of descrambled control words is set to exist
Carried out in digital reception device, and realize the descrambling of programme signal, set top box can be passed through by solving criminal in the prior art
With the circuit of smart card communication, descrambled control words are got, realizes and descrambled control words is cracked, risk is brought to operator
Problem.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
For device class embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is joined
See the part explanation of embodiment of the method.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can also be passed through
Its mode is realized.Device embodiment described above is only schematical, for example, the flow chart and block diagram in accompanying drawing show
Device, architectural framework in the cards, the work(of method and computer program product of multiple embodiments according to the present invention are shown
Can and it operate.At this point, each square frame in flow chart or block diagram can represent one of a module, program segment or code
Point, a part for the module, program segment or code includes one or more and is used to realize the executable of defined logic function
Instruction.It should also be noted that at some as in the implementation replaced, the function of being marked in square frame can also be with different from attached
The order marked in figure occurs.For example, two continuous square frames can essentially perform substantially in parallel, they also may be used sometimes
To perform in the opposite order, this is depending on involved function.It is it is also noted that each in block diagram and/or flow chart
The combination of square frame and the square frame in block diagram and/or flow chart, can use function or action as defined in performing it is special based on
The system of hardware is realized, or can be realized with the combination of specialized hardware and computer instruction.
In addition, each functional module in each embodiment of the present invention can integrate to form an independent portion
Point or modules individualism, can also two or more modules be integrated to form an independent part.
If the function is realized in the form of software function module and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.Need
Illustrate, herein, such as first and second or the like relational terms be used merely to by an entity or operation with
Another entity or operation make a distinction, and not necessarily require or imply between these entities or operation any this reality be present
The relation or order on border.Moreover, term " comprising ", "comprising" or its any other variant are intended to the bag of nonexcludability
Contain, so that process, method, article or equipment including a series of elements not only include those key elements, but also including
The other element being not expressly set out, or also include for this process, method, article or the intrinsic key element of equipment.
In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including the key element
Process, method, other identical element also be present in article or equipment.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, is then not required in subsequent accompanying drawing
It is further defined and explained.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of information processing method, it is characterised in that applied to digital reception device, methods described includes：
The processor of the digital reception device sends the first program descrambling information to the encryption core of the digital reception device
Piece；
The second program descrambling information after being encrypted is encrypted in the first program descrambling information by the encryption chip, and
The second program descrambling information is sent to the processor；
The processor is based on the second program descrambling information and obtains descrambled control words corresponding to the actual program signal, and
The descrambled control words are sent to the descrambler of the digital reception device；
The descrambler is descrambled based on the descrambled control words to the actual program signal, obtains the actual program letter
Raw digital signal corresponding to number.
2. according to the method for claim 1, it is characterised in that the processor of the digital reception device is by the first program solution
Information is disturbed to send to the encryption chip of the digital reception device, including：
The processor judges the authorization message for whether including actual program signal in the authorized user message in user profile；
If so, then the processor sends the first program descrambling information to the encryption chip.
3. according to the method for claim 2, it is characterised in that the processor judges that the user in user profile authorizes letter
Before the authorization message for whether including actual program signal in breath, methods described also includes：
The signal dispatcher module of the digital reception device obtains the user profile, user's letter from subscriber management server
Breath includes authorized user message and the first program descrambling information.
4. according to the method for claim 2, it is characterised in that the processor judges that the user in user profile authorizes letter
After the authorization message for whether including actual program signal in breath, methods described also includes：
Prompting user does not possess the mandate of the actual program signal.
5. according to the method for claim 1, it is characterised in that the encryption chip enters the first program descrambling information
The second program descrambling information gone after being encrypted, and the second program descrambling information is sent to the processor,
Including：
The encryption chip is based on the first default decipherment algorithm and the first program descrambling information is decrypted, and obtains described the
Control word corresponding to one program descrambling information；
The encryption chip is added based on the first predetermined encryption algorithm to control word corresponding to the first program descrambling information
It is close, obtain second program descrambling information；
The encryption chip sends the second program descrambling information to the processor.
6. method according to claim 1 or 5, it is characterised in that the processor is based on second program descrambling letter
Breath obtains descrambled control words corresponding to the actual program signal, and the descrambled control words are sent to the digital received and set
Standby descrambler, including：
The processor is based on the second default decipherment algorithm and the second program descrambling information is decrypted, and obtains the control of plaintext
Word processed, as descrambled control words corresponding to the actual program signal；
The processor sends the descrambled control words to the descrambler of the digital reception device.
7. according to the method for claim 1, it is characterised in that the descrambler is based on the descrambled control words and worked as to described
Preceding programme signal is descrambled, and after obtaining raw digital signal corresponding to the actual program signal, methods described also includes：
The descrambler sends raw digital signal corresponding to the actual program signal to the solution of the digital reception device
Code device；
The decoder decodes to the raw digital signal, obtains audio signal corresponding to the actual program signal
And/or vision signal, and the audio signal and/or vision signal are exported to the input being connected with the digital reception device
Output equipment.
8. a kind of digital reception device, it is characterised in that the digital reception device includes processor, is connected with the processor
Encryption chip and descrambler, wherein,
The processor is used to send the first program descrambling information to the encryption chip；
The encryption chip is used to the first program descrambling information descrambling letter of the second program after being encrypted is encrypted
Breath, and the second program descrambling information is sent to the processor；
The processor is additionally operable to obtain descrambling control corresponding to the actual program signal based on the second program descrambling information
Word processed, and the descrambled control words are sent to the descrambler；
The descrambler is used to descramble the actual program signal based on the descrambled control words, works as prosthomere described in acquisition
Raw digital signal corresponding to mesh signal.
9. digital reception device according to claim 8, it is characterised in that the processor is by the first program descrambling information
Sending to the mode of the encryption chip includes：
The processor judges the authorization message for whether including actual program signal in the authorized user message in user profile；
If so, then the processor sends the first program descrambling information to the encryption chip.
10. digital reception device according to claim 9, it is characterised in that the encryption chip is by first program
The second program descrambling information after being encrypted is encrypted in descrambling information, and the second program descrambling information is sent to institute
Stating the mode of processor includes：
The encryption chip is based on the first default decipherment algorithm and the first program descrambling information is decrypted, and obtains described the
Control word corresponding to one program descrambling information；
The encryption chip is added based on the first predetermined encryption algorithm to control word corresponding to the first program descrambling information
It is close, obtain second program descrambling information；
The encryption chip sends the second program descrambling information to the processor.
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Application publication date: 20180223 |