CN103139642A - Method, related device and system of signal encryption achieved in set top box - Google Patents
Method, related device and system of signal encryption achieved in set top box Download PDFInfo
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- CN103139642A CN103139642A CN2013100541243A CN201310054124A CN103139642A CN 103139642 A CN103139642 A CN 103139642A CN 2013100541243 A CN2013100541243 A CN 2013100541243A CN 201310054124 A CN201310054124 A CN 201310054124A CN 103139642 A CN103139642 A CN 103139642A
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Abstract
The invention discloses a method of signal encryption achieved in a set top box. The method of the signal encryption achieved in the set top box comprises the following steps: receiving a source signal which is input through a wireless decoding module, encrypting the source signal according to a preset encryption algorithm to obtain the encrypted signal, and inputting the signal after being encrypted to a central processing unit. The invention further discloses a device for encrypting and an encrypting system. By the adoption of the device encrypting and the encrypting system, the input effective signal can be served as one part of the encrypted signal, and the security of the encryption method is effectively improved. The encrypting device and the encrypting system are simple in structure and high in security.
Description
Technical field
The present invention relates to the digital TV terminal field, relate in particular to a kind of encryption method, relevant apparatus and system of electronic equipment.
Background technology
Along with the development of science and technology, increasing electronic equipment producer pays attention to the anti-piracy design of its product.If a kind of new product can pull open rapidly the time difference with its similar competing product, just can there be the more time to seize the first market opportunities.Therefore how electronic equipment manufacturer captures the technology highland, and can prevent effectively that others' malice from plagiarizing, most important to protecting self rights and interests.
The fail safe of DES algorithm and IDEA algorithm is very high, generally be difficult to crack, but some bootleggers are by DAS and the binary code ocr software data analysis to the FLASH district, find out the corresponding code of program segment, get around the encrypted authentication step, directly forward main program to, with regard to the easy to do ciphering unit that cracks electronic equipment.
The external input device of the electronic equipment such as supervisory keyboard or remote controller, generally encrypt by following dual mode: the one, first carry out encrypted authentication before entering main program, once be verified, do not need encrypted authentication again after forwarding main program to, thus the response external input equipment; The 2nd, constantly add checking in main program, only have at every turn to be verified, electronic equipment just can work on and the response external input equipment, otherwise just withdraws from main program.
In above two kinds of cipher modes, the bootlegger only need remove or wipe the encrypted authentication code segment, just can obtain the right to use of this product.Affect the security performance of electronic equipment.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of method that realizes signal encryption in set-top box is provided.The hardware that does not need to change set-top box consists of, and just can the signal in set-top box be encrypted.
The invention provides a kind of method that realizes signal encryption in set-top box, comprising:
The processor reception sources signal that is used for driving LED and/or scanning button, described source signal are to input by the wireless decoding module of set-top box;
According to the cryptographic algorithm that presets, described source signal is encrypted the signal after being encrypted;
With the input of the signal after described encryption central processing unit.
Wherein, the wireless decoding module comprises infrared decoding module or bluetooth decoder module or radio frequency decoder module.
Wherein, the cryptographic algorithm that presets comprises DES algorithm or IDEA algorithm.
Wherein, the signal after encryption is by clock cable and data signal line input central processing unit.
The present invention also provides a kind of encryption device of realizing signal encryption in set-top box, and described device comprises that described device also comprises for the processor of driving LED and/or scanning button:
Receiving element, the reception sources signal;
Ciphering unit with described receiving element communication connection, is encrypted described source signal.
Output unit is connected with described ciphering unit, with the input of the signal after described encryption central processing unit.
Wherein, the described source signal that receives of described receiving element is the wireless decoding module input by set-top box.
Wherein, source signal passes through DES algorithm or IDEA algorithm for encryption in ciphering unit.
The present invention also provides a kind of set-top box, comprising: wireless decoding module, controller and central processing unit, wherein:
Described wireless decoding module communicates to connect with the input equipment of outside, receives the input signal of described input equipment, and sends to described controller;
Controller is used for encrypting described input signal, and exports central processing unit to;
Central processing unit is processed the input signal after encrypting.
The present invention also provides a kind of encryption system, comprising: outside input equipment and set-top box, and described set-top box comprises: wireless decoding module, controller and central processing unit, wherein:
Described wireless decoding module communicates to connect with the input equipment of outside, receives the input signal of described input equipment, and sends to described controller;
Controller is used for encrypting described input signal, and exports central processing unit to;
Central processing unit is processed the input signal after encrypting.
Wherein, the input equipment of described outside is remote controller.
The present invention has following beneficial effect: the present invention realizes the method for signal encryption in set-top box, can be with the useful signal of input as the part of coded signal, effectively improved the fail safe of this encryption method, the present invention realizes the encryption device of signal encryption in set-top box, simple in structure, safe, set-top box of the present invention and encryption system, can be encrypted the signal in set-top box under the prerequisite that does not change the top-set hardware structure, reduce user's use cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is existing encryption system structural representation;
Fig. 2 is the preferred embodiment of the present invention realizes signal encryption in set-top box method flow diagram;
Fig. 3 is the preferred embodiment of the present invention realizes signal encryption in set-top box encryption device structural representation;
Fig. 4 is preferred embodiment of the present invention set up box structure schematic diagram;
Fig. 5 is preferred embodiment of the present invention encryption system structural representation.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
See also Fig. 1, it is existing encryption system structural representation, existing encryption system comprises input equipment, be used for the input source signal, also comprise wireless decoding module, central processing unit and connected microcontroller, source signal inputs to the wireless decoding module by input equipment, the wireless decoding module inputs to central processing unit with decoded source signal, and be encrypted checking in central processing unit, microcontroller is used for driving LED, scanning button in existing encryption system, microcontroller does not have encryption function in existing encryption system.
Should be appreciated that encryption system of the prior art not with the part of effective source signal as signal after encrypting, only needs the encrypted authentication code segment in main program is wiped the rights of using that can obtain this security product, fail safe is lower.
Seeing also Fig. 2, is the preferred embodiment of the present invention realizes signal encryption in set-top box method flow diagram, comprises the following steps:
S10, reception sources signal, source signal is inputted by the wireless decoding module;
The cryptographic algorithm that S11, basis preset is encrypted source signal, the signal after being encrypted;
S12, the input of the signal after encrypting central processing unit.
What need to know is, wireless decoding module of the present invention comprises infrared decoding module or bluetooth decoder module or radio frequency decoder module, be used for the reception sources signal, the signal that the user can send according to input equipment, the autonomous type of selecting the wireless decoding module makes the range of application of this encryption method more extensive.
The cryptographic algorithm that presets comprises DES algorithm or IDEA algorithm, and the security performance of above two kinds of algorithms is higher, is that source signal is encrypted by above any one superencipherment algorithm, all can strengthen the fail safe that realizes signal encryption method in set-top box of the present invention.
Signal after being encrypted after source signal is encrypted, the signal after encryption are by clock cable and data signal line input central processing unit, by the signal after clock cable and data signal line transmission encryption.
Seeing also Fig. 3, is the preferred embodiment of the present invention realizes the encryption device of signal encryption in set-top box structural representation, and the encryption device of the preferred embodiment of the present invention comprises:
Receiving element is used for the reception sources signal.
Ciphering unit with the receiving element communication connection, is encrypted source signal.
Output unit is connected with ciphering unit, with the signal input central processing unit after encrypting.
The described source signal that the receiving element of encryption device of the present invention receives is to input by the wireless decoding module of set-top box, and wherein, the wireless decoding module comprises infrared decoding module or bluetooth decoder module or radio frequency decoder module.
Ciphering unit of the present invention is microcontroller.Source signal passes through DES algorithm or IDEA algorithm for encryption in microcontroller.Signal after being encrypted after source signal is encrypted, the signal after encryption is completed the ciphering process of source signal by being the clock cable of controller and data signal line input central processing unit.
What need to know is that preferred embodiment of the present invention encryption device passes through source signal DES algorithm or IDEA algorithm for encryption by receiving element reception sources signal in ciphering unit, will comprise the coded signal input central processing unit of source signal, completes ciphering process.This encryption device is placed in set-top box, DVD(VCD usually), the electronic product such as sound equipment, TV.
Seeing also Fig. 4, is preferred embodiment of the present invention set up box structure schematic diagram, and preferred embodiment of the present invention set-top box comprises: wireless decoding module, controller and central processing unit, wherein:
The wireless decoding module communicates to connect with the input equipment of outside, receives the input signal of input equipment, and sends to controller;
Controller is used for encrypting described input signal, and exports central processing unit to;
Central processing unit is processed the input signal after encrypting.
Should be appreciated that preferred embodiment of the present invention set-top box can be encrypted the signal in set-top box under the prerequisite that does not change the top-set hardware structure, namely use the controller of former set-top box input signal is encrypted, reduced user's use cost.
See also Fig. 5, it is preferred embodiment of the present invention encryption system structural representation, comprise outside input equipment, be used for the input source signal, outside input equipment comprises remote controller or keyboard, mouse etc., also comprise set-top box, set-top box comprises: wireless decoding module, controller and central processing unit, wherein:
The wireless decoding module communicates to connect with the input equipment of outside, receives the input signal of input equipment, and sends to controller;
Controller is used for encrypting input signal, and exports central processing unit to;
Central processing unit is processed the input signal after encrypting.
The ciphering process of preferred embodiment of the present invention encryption system is as follows: external input device by infrared or bluetooth or RF-wise to the source signal of the wireless decoding module input not encrypted of its coupling, the source signal of input is encrypted in microcontroller, can pass through DES algorithm or IDEA algorithm for encryption, source signal after encryption inputs to central processing unit, completes ciphering process.
The microcontroller of preferred embodiment of the present invention encryption system is not only carried out the simple functions such as scanning button and driving LED, also as ciphering unit, source signal is encrypted, and the signal after encrypting inputs in central processing unit by clock line and data wire.Therefore, if destroyed the signal after the encryption, just be equivalent to destroy effective source signal, the function that the source signal of input equipment input is carried out will lose efficacy, even this encryption system is cracked, source signal can not use, and has strengthened the security performance of encryption system.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to complete by computer program, described program can be stored in a computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1. a method that realizes signal encryption in set-top box, is characterized in that, comprising:
The processor reception sources signal that is used for driving LED and/or scanning button, described source signal are to input by the wireless decoding module of set-top box;
According to the cryptographic algorithm that presets, described source signal is encrypted the signal after being encrypted;
With the input of the signal after described encryption central processing unit.
2. encryption method as claimed in claim 1, is characterized in that, described wireless decoding module comprises infrared decoding module or bluetooth decoder module or radio frequency decoder module.
3. encryption method as claimed in claim 1, is characterized in that, the described cryptographic algorithm that presets comprises DES algorithm or IDEA algorithm.
4. encryption method as claimed in claim 1, is characterized in that, the signal after described encryption is by clock cable and data signal line input central processing unit.
5. encryption device of realizing signal encryption in set-top box, described device comprise for the processor of driving LED and/or scanning button, and it is characterized in that, described encryption device also comprises:
Receiving element, the reception sources signal;
Ciphering unit with described receiving element communication connection, is encrypted described source signal;
Output unit is connected with described ciphering unit, with the input of the signal after described encryption central processing unit.
6. encryption device as claimed in claim 5, is characterized in that, the described source signal that described receiving element receives is to input by the wireless decoding module of set-top box.
7. encryption device as claimed in claim 5, is characterized in that, described source signal passes through DES algorithm or IDEA algorithm for encryption in ciphering unit.
8. a set-top box, is characterized in that, comprising: wireless decoding module, controller and central processing unit, wherein:
Described wireless decoding module communicates to connect with the input equipment of outside, receives the input signal of described input equipment, and sends to described controller;
Controller is used for encrypting described input signal, and exports central processing unit to;
Central processing unit is processed the input signal after encrypting.
9. an encryption system, is characterized in that, comprising: outside input equipment and set-top box, and described set-top box comprises: wireless decoding module, controller and central processing unit, wherein:
Described wireless decoding module communicates to connect with the input equipment of outside, receives the input signal of described input equipment, and sends to described controller;
Controller is used for encrypting described input signal, and exports central processing unit to;
Central processing unit is processed the input signal after encrypting.
10. encryption system as claimed in claim 9, is characterized in that, the input equipment of described outside is remote controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100541243A CN103139642A (en) | 2013-02-20 | 2013-02-20 | Method, related device and system of signal encryption achieved in set top box |
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| CN2013100541243A CN103139642A (en) | 2013-02-20 | 2013-02-20 | Method, related device and system of signal encryption achieved in set top box |
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Citations (5)
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| CN1848944A (en) * | 2005-04-05 | 2006-10-18 | 华为技术有限公司 | IPTV system, enciphered digital programme issuing and watching method |
| CN1937758A (en) * | 2005-10-31 | 2007-03-28 | 康佳集团股份有限公司 | Low-cost digital television signal encryption method and system |
| CN201515456U (en) * | 2009-09-23 | 2010-06-23 | 北京视博数字电视科技有限公司 | Safe device, set-top box and receiving terminal for digital television receiving terminals |
| CN202178853U (en) * | 2011-07-27 | 2012-03-28 | 中山市伊达科技有限公司 | Multi-functional set top box with encryption system |
| CN102724563A (en) * | 2012-06-15 | 2012-10-10 | 深圳市汇海威视科技有限公司 | Monitoring front end and terminal, monitoring system as well as audio/video signal encryption and decryption methods |
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2013
- 2013-02-20 CN CN2013100541243A patent/CN103139642A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848944A (en) * | 2005-04-05 | 2006-10-18 | 华为技术有限公司 | IPTV system, enciphered digital programme issuing and watching method |
| CN1937758A (en) * | 2005-10-31 | 2007-03-28 | 康佳集团股份有限公司 | Low-cost digital television signal encryption method and system |
| CN201515456U (en) * | 2009-09-23 | 2010-06-23 | 北京视博数字电视科技有限公司 | Safe device, set-top box and receiving terminal for digital television receiving terminals |
| CN202178853U (en) * | 2011-07-27 | 2012-03-28 | 中山市伊达科技有限公司 | Multi-functional set top box with encryption system |
| CN102724563A (en) * | 2012-06-15 | 2012-10-10 | 深圳市汇海威视科技有限公司 | Monitoring front end and terminal, monitoring system as well as audio/video signal encryption and decryption methods |
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Application publication date: 20130605 |