CN101068303A - Hardware enciphering method used for wired television system set-top box - Google Patents
Hardware enciphering method used for wired television system set-top box Download PDFInfo
- Publication number
- CN101068303A CN101068303A CNA2006100625997A CN200610062599A CN101068303A CN 101068303 A CN101068303 A CN 101068303A CN A2006100625997 A CNA2006100625997 A CN A2006100625997A CN 200610062599 A CN200610062599 A CN 200610062599A CN 101068303 A CN101068303 A CN 101068303A
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- China
- Prior art keywords
- identification code
- hard disk
- user
- top box
- video
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000005236 sound signal Effects 0.000 claims description 6
- 238000007726 management method Methods 0.000 description 30
- 238000013475 authorization Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013486 operation strategy Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
- G06F21/80—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in storage media based on magnetic or optical technology, e.g. disks with sectors
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00188—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
- G11B20/00195—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier using a device identifier associated with the player or recorder, e.g. serial numbers of playback apparatuses or MAC addresses
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42661—Internal components of the client ; Characteristics thereof for reading from or writing on a magnetic storage medium, e.g. hard disk drive
-
- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43622—Interfacing an external recording device
-
- 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 or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
-
- 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 or rendering scenes according to encoded video stream scene graphs
- H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream 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]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Technology Law (AREA)
- Databases & Information Systems (AREA)
- Power Engineering (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
A method for enciphering hard disc of set-top box in cable TV system includes setting a corresponding physical address for cable TV user, distributing a unique identification code to user applying storage unit by operation-firm according to said physical address, sending said identification code together with video-audio signal to user end and writing identification code in hard disc set at user end in order to allow user to download video-audio signal when comparison of identification code in video-audio signal with identification code in hard disc is passed.
Description
[technical field]
The present invention relates to the management method of memory device in a kind of cable television system, specifically relate to a kind of hard disk encryption method that is used for cable television system user side set-top box.
[background technology]
Along with the development of domestic cable digital TV and popularize, the cable digital TV computer management system is also more and more perfect.
The prerequisite that computer management system is implemented is that digital television signal is encrypted.So-called television encryption is exactly that digital television signal is carried out the process that scrambler is decoded again, and unauthorized user can't normally be watched, authorized user receiving terminal decode procedure uses set-top box (DVB).The condition receiving system (CAS) that the process of television encryption that is industry are alleged.It is the concrete application of present information encryption technology at digital TV field.Condition receiving system generally is the mode that adopts scrambling control word (CW) encrypted transmission, and receiving terminal can utilize smart card to be decrypted.Condition receiving system comprises user authorization management system (SAS).User authorization management system (SAS) obtains authorization message and generates Entitlement Management Message (EMM) from Subscriber Management System (SMS).User authorization management system (SAS) produces the ECM data that are used to encrypt according to control word, and ECM information is inserted into multiplexer, and multiplexer is sent to receiving terminal by channel with the digital television signal of encrypting.Digital-TV operator also needs to be equipped with cover user's management system (SMS), and it is the software platform of an operation management, has functions such as user management, charge/account, customer service, statistical analysis, decision support, customer relation management.Subscriber Management System is based on ICP/IP protocol, generally adopts three-layer architecture: database: information such as storage user, finance, subscriber terminal equipment; Application service: carry out program products packing and price, the initialization definitions of set-top box, smart card etc. according to the operation strategy; Client application: carry out user management, financial management, operation tactical management etc.Subscriber Management System is inseparable with condition receiving system.
Under such industry background, the more and more abundanter derivation function of relevant cable digital TV also arises at the historic moment thereupon.New business such as pay channel, VOD, video game are brought new business income to digital-TV operator.When the increasing digital service that emerges in large numbers is promoted, how to guarantee that the protection that numeral paying information that operator provides is subjected to whole digital television system becomes present problem demanding prompt solution.If the consumer wishes that the cable digital TV program that oneself can be liked stores, must guarantee that then the program that stores can not be replicated abuse, the rights and interests of infringement cable TV station.
[summary of the invention]
The objective of the invention is to propose a kind of hard disk encryption method that is used for cable television system user side set-top box.
The technical scheme that realizes above-mentioned purpose is a kind of encryption method that is used for the hard disk of wired television system set-top box, and may further comprise the steps: the cable TV subscriber is set a physical address corresponding; Operator distributes a unique identification code according to physical address for the user who uses storage device; Described identification code reaches user side along with video/audio signal and is written on the hard disk that is installed in user side, make its identification code comparison of working as identification code and hard disk in the video/audio signal by the time permission user's download video/audio signal.The invention enables the user can only be, and described hard disk can't use on other user side or active devices, guarantee the unique correspondence and the fail safe of storage device at the user side storage video/audio of authorizing.
Described identification code comprises physical address information.
Described identification code is encrypted then by the Subscriber Management System distribution and is sent to user side, and the user deciphers identification code by private key.
The process that described identification code writes hard disk may further comprise the steps: a processor is written to the identification code of deciphering in one comparator of hard disk, and the output of comparator connection one is integrated in the controller of hard disk.
The present invention adopts technique scheme, its beneficial technical effects is: 1) encryption method of hard disk of the present invention is that the cable TV subscriber sets a physical address corresponding by cable television operators, and distribute a unique storage device identification code for each storage device that is installed in set-top box, identification code is encrypted and is sent to corresponding user's receiving terminal, receiving terminal is again with the mode write storage device of this identification code to encrypt, make user's receiving terminal set-top box that unique storage device is corresponding unique, and the storage device that can make dismounting can't be stored on the reading device at other and use, and has guaranteed the unique correspondence and the fail safe of storage device.2) in case storage device of the present invention writes the identification code of distribution then can't change, and storage device can only be used in fixing user's receiving terminal and downloads and store video/audio.
[description of drawings]
Below by embodiment also in conjunction with the accompanying drawings, the present invention is described in further detail:
Fig. 1 is that the identification code of the encryption method of the present invention's hard disk of being used for wired television system set-top box transmits schematic diagram.
Fig. 2 is the flow chart that the hard disk of the encryption method of the present invention's hard disk of being used for wired television system set-top box writes identification code.
[embodiment]
Please refer to Fig. 1, cable television operators need set a physical address corresponding to each cable TV subscriber when a kind of encryption method that is used for the hard disk of wired television system set-top box of the present invention, prerequisite of the invention process.
The prerequisite that the cable TV computer management system is implemented is that digital television signal is encrypted.So-called television encryption is exactly that digital television signal is carried out the process that scrambler is decoded again, and unauthorized user can't normally be watched, authorized user receiving terminal decode procedure uses set-top box (DVB).The condition receiving system (CAS) that the process of television encryption that is industry are alleged.It is the concrete application of present information encryption technology at digital TV field.The condition receiving system of general cable TV comprises that encrypting the head end reconciliation connects airtight the receipts control terminal.
Condition receiving system in the present embodiment adopts quadruple cipher key delivery mechanism.In digital transmission system, the quadruple key is respectively: the control word of scrambler, and it adopts a general algorithm program stream information flow to be changed into the digital stream of random sequence; Authorization key, it is encrypted control word, forms Entitlement Control Message ECM, and ECM information is inserted and is transmitted stream, approximately occurs once in transmitting stream every several seconds; Client public key, it encrypts customer management information, forms Entitlement Management Message EMM, and customer management information is formed by the Subscriber Management System of operator, comprises user's name, address, intelligent card numbers, bill or the like.EMM approximately inserted and transmits stream once in per 8～10 seconds; Identification code, described identification code comprises user's physical address information, is formed by the Subscriber Management System of operator, identification code was approximately inserted and is transmitted stream once in per 8～10 seconds.
Described encryption head end comprises scrambler, SAS Subscriber Authorization System and the Subscriber Management System to the video/audio scrambling.Front end information encrypted flow process is: control word generator produces at random by certain sequential and adds descramble key, add descramble key and be sent to scrambler and control word encryption maker (ECM) respectively, scrambler is pressed common scrambling algorithm real-time scrambling video/audio free flow, and ECM will add descramble key and the access control conditional information advances multiplexer with privately owned algorithm for encryption generation ECM.The SAS Subscriber Authorization System of condition receiving system is encrypted maker (EMM) with customer management information (as: channel information that the user buys, effective time etc.) with authorization key and is encrypted and generate EMM and advance multiplexer in addition.
The decryption information flow process of described set-top box then is the inverse process of top process, specifically comprise: the set-top box of user side is earlier according to smart card, that is private key, the EMM key of last storage solves the EMM in the stream, judges according to this user's authorization message whether the user has the right to watch this channel at current point in time; If mandate is arranged, set-top box just continues next step, i.e. the identification code that solves the ECM in the stream and encrypt storage device according to the ECM key of storing on the smart card; Send the CW that comprises among the ECM to descrambler at last and restore the video/audio free flow, simultaneously the identification code of deciphering is sent into the processor of set-top box, prepare to write hard disk.
The Subscriber Management System of operator is unique corresponding with physical address for the identification code that the user who uses storage device distributes according to physical address.Described identification code promptly is written on the hard disk that is installed in user side by processor after the user side deciphering.The invention enables the user can only be, and described hard disk can't use on other user side or active devices, guarantee the unique correspondence and the fail safe of storage device at the user side storage video/audio of authorizing.
Please refer to Fig. 2, the process that described identification code writes hard disk is: processor is written to the identification code of deciphering in one comparator of hard disk, and the output of comparator connects the input of a controller.Described controller is integrated on the hard disk and between the path of processor and data in magnetic disk transmission, is used for processor controls read-write disk.
The described encipher hard disc using method that is used for set-top box is: the cable TV subscriber sets a physical address corresponding; The Subscriber Management System of operator distributes a unique identification code according to physical address for the user who uses storage device, and described identification code comprises physical address information; The identification code that described Subscriber Management System distributes is encrypted and is sent to user side, and the user deciphers identification code by private key; The identification code of described deciphering is written on the hard disk that is installed in user side, the identification code that the comparator storage of hard disk writes; At this moment, Subscriber Management System approximately inserted as identification code and to transmit stream once discontinuously in per 8～10 seconds, and identification code is transferred to user side along with the video/audio of cable television system; The continuous transmission of condition receiving system and the identification code of deciphering are fed to the comparator of hard disk once more, and described comparator is judged identification code of upgrading and the identification code that has write, and judged result is sent to described controller; Described controller allows according to the judged result of comparator or stops the read-write of processor to disk.If the identification code of upgrading is identical with the identification that writes, then comparator output object code " 1 " is given controller, and controller serves as the adaptive bridge circuit of connection processing device and disk at this moment, allows processor read-write disk.If the identification code of upgrading is inconsistent with the identification that writes, then comparator output object code " 0 " is given controller, and controller cuts off the data communication between processor and the disk at this moment, stops processor read-write disk.
Claims (4)
1, a kind of encryption method that is used for the hard disk of wired television system set-top box, it is characterized in that: may further comprise the steps: the cable TV subscriber is set a physical address corresponding; Operator distributes a unique identification code according to physical address for the user who uses storage device; Described identification code reaches user side along with video/audio signal and is written on the hard disk that is installed in user side, make its identification code comparison of working as identification code and hard disk in the video/audio signal by the time permission user's download video/audio signal.
2, the encryption method that is used for the hard disk of wired television system set-top box according to claim 1, it is characterized in that: described identification code comprises physical address information.
3, the encryption method that is used for the hard disk of wired television system set-top box according to claim 1 is characterized in that: described identification code is encrypted then by the Subscriber Management System distribution and is sent to user side, and the user deciphers identification code by private key.
4, according to any described encryption method that is used for the hard disk of wired television system set-top box of claim 1 to 3, it is characterized in that: the process that described identification code writes hard disk may further comprise the steps: a processor is written to the identification code of deciphering in one comparator of hard disk, the output of comparator connect one be integrated in hard disk controller.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100625997A CN101068303A (en) | 2006-09-13 | 2006-09-13 | Hardware enciphering method used for wired television system set-top box |
| PCT/CN2006/003458 WO2008031292A1 (en) | 2006-09-13 | 2006-12-18 | Encrypting method for hard disk in set top box of cable television system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100625997A CN101068303A (en) | 2006-09-13 | 2006-09-13 | Hardware enciphering method used for wired television system set-top box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101068303A true CN101068303A (en) | 2007-11-07 |
Family
ID=38880729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100625997A Pending CN101068303A (en) | 2006-09-13 | 2006-09-13 | Hardware enciphering method used for wired television system set-top box |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101068303A (en) |
| WO (1) | WO2008031292A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104801A (en) * | 2010-12-21 | 2011-06-22 | 福建二菱电子有限公司 | Confidential method for set-top box software |
| CN101600079B (en) * | 2009-07-07 | 2012-01-04 | 富士通半导体（上海）有限公司 | High-speed downloading system and downloading method based on cable television network |
| CN102833637A (en) * | 2011-06-17 | 2012-12-19 | 宏碁股份有限公司 | Multimedia browsing device, system and method |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000064179A1 (en) * | 1999-04-21 | 2000-10-26 | General Instrument Corporation | Method and system for locating a control channel and data transport stream within the signal received by a set-top box from a cable television system |
| CN1725832A (en) * | 2004-07-23 | 2006-01-25 | 上海乐金广电电子有限公司 | Remote-control controlling method for audio/video record playing device |
-
2006
- 2006-09-13 CN CNA2006100625997A patent/CN101068303A/en active Pending
- 2006-12-18 WO PCT/CN2006/003458 patent/WO2008031292A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101600079B (en) * | 2009-07-07 | 2012-01-04 | 富士通半导体（上海）有限公司 | High-speed downloading system and downloading method based on cable television network |
| CN102104801A (en) * | 2010-12-21 | 2011-06-22 | 福建二菱电子有限公司 | Confidential method for set-top box software |
| CN102833637A (en) * | 2011-06-17 | 2012-12-19 | 宏碁股份有限公司 | Multimedia browsing device, system and method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008031292A1 (en) | 2008-03-20 |
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