CN101783727A - Conditional access system of tuner - Google Patents
Conditional access system of tuner Download PDFInfo
- Publication number
- CN101783727A CN101783727A CN200910076397A CN200910076397A CN101783727A CN 101783727 A CN101783727 A CN 101783727A CN 200910076397 A CN200910076397 A CN 200910076397A CN 200910076397 A CN200910076397 A CN 200910076397A CN 101783727 A CN101783727 A CN 101783727A
- Authority
- CN
- China
- Prior art keywords
- scrambling
- descrambling
- data
- tuner
- conditional access
- 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.)
- Pending
Links
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a conditional access system of a tuner. The conditional access system is characterized by comprising a scrambling end and a descrambling end, wherein the scrambling end is connected in front of a modulation emitter, the encryption operation is carried out on specific data which str required to be scrambled and enter the modulation emitter in an original data stream according to scrambling parameter setting, and the specific data are substituted into scrambling data so as to form scrambling data streams which are then transmitted into the modulation emitter; the descrambling end is integrated with software and hardware of a receiver tuner together and quipped with a unique terminal number; and when the tuner receives data, the descrambling end judges and descrambles all the scrambling data streams according to the scrambling parameter setting so as to ensure that the data streams output from the tuner are reverted into the original data stream before being scrambled by the scrambling end. The invention also discloses a synchronous conditional access system of the tuner, which can not be cracked as long as the hardware security is ensured, by only emitting random numbers or synchronous information without emitting scrambling parameters.
Description
Technical field
The present invention relates to a kind of condition receiving system that descrambler and tuner are integrated.
Background technology
Common condition receiving system is transplanted difficulty, and poor compatibility in case crack, just must be changed whole system, the fusion of Application and Development software and condition receiving system again.If in tuner, implant new condition receiving system, just can be serially connected in existing any condition system, the safety of reinforcement existence conditions system, and do not influence the operation flow of existing maturation.Replacing condition system if more conversion tuner just can, other application software need not the change.
Summary of the invention
The present invention overcomes existence conditions receiving system and the indissociable shortcoming of operation system, a kind of conditional access system of tuner is provided, it is characterized in that, comprise scrambling end and descrambling end, before wherein the scrambling end is connected modulation transmitter, be provided with according to the scrambling parameter, the particular data that needs scrambling in the original data stream that will enter modulation transmitter carried out cryptographic calculation replace to and form scrambled data streams after the scrambled data and deliver to modulation transmitter again; The software and hardware of descrambling end and tuner integrates, possesses unique terminal number, when tuner receives data, be provided with according to the scrambling parameter, the descrambling end judges and descrambling that to all scrambled data streams feasible data flow from tuner output is reduced into the original data stream before the scrambling of scrambling end.
Described conditional access system of tuner, it is characterized in that, comprise the Entitlement Control Message that is used to control the scrambling mode in the described scrambling parameter, be used to control the Entitlement Management Message of descrambling end descrambling authority, the system upgrade information of be used for upgrading descrambling program and parameter one or more.
The Entitlement Control Message concrete regulation scrambling be which data, what method for scrambling is.
The Entitlement Management Message concrete regulation which or which descrambling end can be allowed to use the specific authorized control information that specific scrambled data is carried out descrambling.
System upgrade information is partly or entirely upgraded the descrambling program, also can the key parameter of descrambling program be upgraded.
Described conditional access system of tuner is characterized in that, the descrambling end also possesses zone number except that possessing unique terminal number, and each scrambling end has different terminal number, but identical zone number can be arranged, and is used to improve empowerment management efficient.
In order to prevent that the descrambling end is not in working order, the scrambling end will constantly repeat to send the Entitlement Management Message that has the descrambling end of particular terminal numbering at certain, when number of users is a lot, these Entitlement Management Messages will continue to occupy the lot of data bandwidth resources, if the specific user is divided into class, then only with sending the Entitlement Management Message that has the descrambling end of same area numbering at certain class, continuing to occupy data bandwidth will be little a lot.
Described conditional access system of tuner is characterized in that, the part of described terminal number also can be as zone number.
The independent outer memory of zone number meeting occupy volume occupies if just can save extra storage with the part of unique terminal number as zone number.
Described conditional access system of tuner is characterized in that, described scrambling parameter is encrypted to condition data, appends in the scrambled data streams, and the descrambling end solves the scrambling parameter from condition data, descrambling is controlled.
In order to guarantee safety and the upgrading characteristics, constantly change the scrambling parameter, make system not the long time rely on certain specific scrambling mode, make that do not have abundant data to make for the cryptanalysis system is used for cracking condition receiving system.
Described conditional access system of tuner, it is characterized in that, only some is encrypted to condition data to described scrambling parameter, append in the scrambled data streams, promptly the scrambling parameter of Chuan Songing has incomplete characteristics, after the descrambling end solves incomplete scrambling parameter, can be combined into complete scrambling parameter jointly with inner additional data, described inner additional data be meant data that the descrambling end sets in advance and/or from before the part of the scrambling parameter that obtains the condition data.
Described conditional access system of tuner, it is characterized in that, according to the scrambling parameter that sets in advance, the scrambling end is specific data or whole effective load datas in can a scrambling original data stream, not additional other condition data, same according to the scrambling parameter that writes in advance, the descrambling end can be discerned scrambled data and carry out the descrambling reduction.
Such condition receiving system is a closed system, the place one's entire reliance upon fail safe of hardware of fail safe.When hardware security is secure, scrambling end and descrambling end utilize internal key, by to all different random number and/or dynamic data carry out computing at every turn, produce one-time pad, one time one parameter, all different at every turn key, all different at every turn parameter produces all different at every turn algorithm and scrambling mode.
Described conditional access system of tuner, it is characterized in that, according to the Entitlement Control Message that sets in advance or add in real time, the scrambling end can different scrambling modes carry out scrambling to the different The data in the original data stream, according to the Entitlement Control Message that sets in advance or take out from the control data that the scrambling end adds, the descrambling end also can carry out the descrambling reduction with different scrambled data by corresponding different descrambling modes.
Described conditional access system of tuner, it is characterized in that, according to the Entitlement Management Message that sets in advance or add in real time at particular terminal numbering or zone number descrambling end, the management data that carries Entitlement Management Message that the scrambling end will be encrypted is inserted in the scrambled data streams, the descrambling end that only has respective specific terminal number or zone number could be discerned exclusive management data, therefrom take out Entitlement Management Message, adjust the descrambling authority and preserve, allow or forbid specific scrambled data is carried out the descrambling reduction.
Described conditional access system of tuner, it is characterized in that, scrambling parameter according to real-time adding, the scrambling end is specific data or whole effective load datas in can the scrambling original data stream, and the condition data of carrying the scrambling parameter that will encrypt is inserted in the scrambled data streams, the descrambling end carries the condition data of scrambling parameter by deciphering, takes out and according to the scrambling parameter, scrambled data is carried out the descrambling reduction.
Described conditional access system of tuner is characterized in that, described terminal number can self checking, and promptly the part according to terminal number can calculate another part.Can prevent to copy terminal number like this.
Embodiment
Embodiment 1 (simultaneous tuning device condition receiving system)
Simultaneous tuning device condition receiving system of the present invention, it is characterized in that, the hardware capability of the descrambling end that integrates according to the scrambling end with tuner, scrambling end can a scrambling original data stream in specific data, the descrambling end can be discerned specific scrambled data and carry out the descrambling reduction.The descrambling end possesses unique terminal number, and described terminal number can self checking, and promptly the part according to terminal number can calculate another part.Scrambling end and descrambling end utilize internal key, by all different random number and/or dynamic data are at every turn carried out computing, produce one-time pad, one time one parameter, all different at every turn key, all different at every turn parameter produces all different at every turn algorithm and scrambling mode.Described dynamic data is the identifying code of program data or rolling code, because program data possesses dynamic characteristic at any time changing; The identifying code of rolling code is then safer, because rolling code rolls by the specific internal formula, have only special hardware ability to produce synchronously, and the identifying code of rolling code is just verified the correctness of synchronous rolling for the descrambling end.What the outside rolling code that can't obtain actual use is.Described like this simultaneous tuning device condition receiving system can not send the scrambling parameter, only sends random number or synchronizing information, as long as ensure that hardware security just can't crack.
Claims (10)
1. conditional access system of tuner, it is characterized in that, comprise scrambling end and descrambling end, before wherein the scrambling end is connected modulation transmitter, be provided with according to the scrambling parameter, the particular data that needs scrambling in the original data stream that will enter modulation transmitter carried out cryptographic calculation replace to and form scrambled data streams after the scrambled data and deliver to modulation transmitter again; The software and hardware of descrambling end and tuner integrates, possesses unique terminal number, when tuner receives data, be provided with according to the scrambling parameter, the descrambling end can judge and descrambling that the data flow that make all export from tuner all are reduced into the original data stream before the scrambling of scrambling end to all scrambled data streams.
2. according to the conditional access system of tuner described in the claim 1, it is characterized in that, the descrambling end is except that possessing unique terminal number, also possesses zone number, each scrambling end has different terminal number, but identical zone number can be arranged, be used to improve empowerment management efficient, the part of described terminal number also can be as zone number.
3. according to the conditional access system of tuner described in the claim 2, it is characterized in that, comprise the Entitlement Control Message that is used to control the scrambling mode in the described scrambling parameter, be used to control the Entitlement Management Message of descrambling end descrambling authority, the system upgrade information of be used for upgrading descrambling program and parameter one or more.
4. according to the conditional access system of tuner described in the claim 3, it is characterized in that described scrambling parameter is encrypted to condition data, appends in the scrambled data streams, the descrambling end solves the scrambling parameter from condition data, descrambling is controlled.
5. according to the conditional access system of tuner described in the claim 4, it is characterized in that, according to the Entitlement Control Message that sets in advance or add in real time, the scrambling end can different scrambling modes carry out scrambling to the different The data in the original data stream, according to the Entitlement Control Message that sets in advance or take out from the control data that the scrambling end adds, the descrambling end also can carry out the descrambling reduction with different scrambled data by corresponding different descrambling modes.
6. according to the conditional access system of tuner described in the claim 5, it is characterized in that, according to the Entitlement Management Message that sets in advance or add in real time at particular terminal numbering or zone number descrambling end, the management data that carries Entitlement Management Message that the scrambling end will be encrypted is inserted in the scrambled data streams, the descrambling end that only has respective specific terminal number or zone number could be discerned exclusive management data, therefrom take out Entitlement Management Message, adjust the descrambling authority and preserve, allow or forbid specific scrambled data is carried out the descrambling reduction.
7. according to arbitrary described conditional access system of tuner in the claim 1 to 3, it is characterized in that, according to the scrambling parameter that sets in advance, the scrambling end is specific data or whole effective load datas in can a scrambling original data stream, not additional other condition data, same according to the scrambling parameter that writes in advance, the descrambling end can be discerned scrambled data and carry out the descrambling reduction.
8. according to the conditional access system of tuner described in the claim 1 to 6, it is characterized in that, only some is encrypted to condition data to described scrambling parameter, append in the scrambled data streams, promptly the scrambling parameter of Chuan Songing has incomplete characteristics, after the descrambling end solves incomplete scrambling parameter, can be combined into complete scrambling parameter jointly with inner additional data, described inner additional data be meant data that the descrambling end sets in advance and/or from before the part of the scrambling parameter that obtains the condition data.
9. according to arbitrary described conditional access system of tuner in the claim 1 to 6, it is characterized in that, scrambling parameter according to real-time adding, the scrambling end is specific data or whole effective load datas in can the scrambling original data stream, and the condition data of carrying the scrambling parameter that will encrypt is inserted in the scrambled data streams, the descrambling end carries the condition data of scrambling parameter by deciphering, takes out and according to the scrambling parameter, scrambled data is carried out the descrambling reduction.
10. according to the conditional access system of tuner described in the claim 9, it is characterized in that described terminal number can self checking, promptly the part according to terminal number can calculate another part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910076397A CN101783727A (en) | 2009-01-15 | 2009-01-15 | Conditional access system of tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910076397A CN101783727A (en) | 2009-01-15 | 2009-01-15 | Conditional access system of tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101783727A true CN101783727A (en) | 2010-07-21 |
Family
ID=42523554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910076397A Pending CN101783727A (en) | 2009-01-15 | 2009-01-15 | Conditional access system of tuner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101783727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840937A (en) * | 2012-11-23 | 2014-06-04 | 许丰 | Virtual quantum encryption system |
-
2009
- 2009-01-15 CN CN200910076397A patent/CN101783727A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840937A (en) * | 2012-11-23 | 2014-06-04 | 许丰 | Virtual quantum encryption system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1655495B (en) | System and method for security key transmission with strong pairing to destination client | |
| CN101753292B (en) | Methods and devices for a chained encryption mode | |
| CN101448130B (en) | Method, system and device for protecting data encryption in monitoring system | |
| CN110912690A (en) | Data encryption and decryption method, vehicle and storage medium | |
| CN106453326B (en) | A kind of certification of CAN bus and access control method | |
| CN109168162B (en) | Bluetooth communication encryption method and device and intelligent security equipment | |
| RU2006147370A (en) | METHOD FOR DECRAMBLING A SCRUMBED CONTENT INFORMATION OBJECT | |
| CN101877702A (en) | Method and system for activating and authenticating an internet protocol television client | |
| CN101621403B (en) | Set top box multicast upgrading method | |
| CN112672342B (en) | Data transmission method, device, equipment, system and storage medium | |
| CN1323523C (en) | Method of forming dynamic key in radio local network | |
| US20210232708A1 (en) | Method for protecting encrypted control word, hardware security module, main chip and terminal | |
| CN103117850B (en) | A kind of method for building up of the cryptographic system based on random sequence database | |
| CN102045343B (en) | DC (Digital Certificate) based communication encrypting safety method, server and system | |
| CN102413463B (en) | Wireless media access layer authentication and key agreement method for filling variable sequence length | |
| US20070203843A1 (en) | System and method for efficient encryption and decryption of drm rights objects | |
| CN107659405A (en) | The encrypting and decrypting method that data communicate between a kind of transformer station boss station | |
| CN101783727A (en) | Conditional access system of tuner | |
| CN103249035A (en) | Wireless sensor network data encryption transmission method | |
| CN102316102A (en) | Safety transmits the method for message | |
| CN101783709A (en) | Single channel tuner condition receiving system | |
| CN109410394A (en) | A kind of method for sending information and information transmitting system of intelligent door lock | |
| CN108366359A (en) | A kind of method, apparatus and system of configuration set-top box connection WiFi | |
| CN110047181B (en) | Intelligent door lock safety control method based on Zigbee | |
| EP2047631B1 (en) | Method for establishing a secret key between two nodes in a communication network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100721 |