CN101977073B - Bidirectional authentication system for satellite receiving terminal and receiving antenna - Google Patents
Bidirectional authentication system for satellite receiving terminal and receiving antenna Download PDFInfo
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- CN101977073B CN101977073B CN2010105317429A CN201010531742A CN101977073B CN 101977073 B CN101977073 B CN 101977073B CN 2010105317429 A CN2010105317429 A CN 2010105317429A CN 201010531742 A CN201010531742 A CN 201010531742A CN 101977073 B CN101977073 B CN 101977073B
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Abstract
The invention discloses a bidirectional authentication system for a satellite receiving terminal and a receiving antenna, which is characterized in that the satellite receiving terminal and the receiving antenna are connected via a coaxial cable for data communication, and simultaneously the satellite receiving terminal supplies power for the receiving antenna via the coaxial cable; a satellite receiving terminal inner authentication module generates random numbers based on a set period, encrypts the random numbers, and sends the encrypted random numbers to the receiving antenna; a receiving antenna inner authentication module receives and decrypts the encrypted data, encrypts and returns the decrypted data to the satellite receiving terminal; the satellite receiving terminal receives and decrypted the data, and judges whether the data are consistent with the random numbers sent before, if not, the satellite receiving terminal stops supplying power for the receiving terminal, and if so, primary authentication is carried out by the receiving antenna as the above mode; and if the authentication is successful, the antenna normally works in the preset period, and otherwise, the antenna stops working. The system in the invention has the advantages of less influence on the receiver and the sender, high safety, simple structure, easy implementation, low cost and suitability for wide promotion.
Description
Technical field
The present invention relates to the two-way authentication system of a kind of satellite receiving terminal and reception antenna.
Background technology
Building up of Chinese first generation telstar live broadcast system represented in the construction with projects to extend radio and TV coverage to all rural villages of launching of No. 9 direct broadcasting satellites of culminant star, indicating also that China's telstar is live to have got into a brand-new stage and will obtain vigorous growth.How effectively to control and to utilize satellite resource and relevant device to become problem.For example the public good of " the village village is logical " engineering is popularized character, has determined that receiving terminal and satellite antenna all are to be provided funds to purchase by government.Art methods can not guarantee the specificity of the said equipment, satellite antenna especially, and this just needs the method and the device of the mutual authentication of a kind of terminal and antenna.
Realize in the existing satellite receiving system that the special-purpose common method of reception antenna has the non-standard down-conversion LNB (low-converter is claimed tuner again, the chief component of reception antenna) of employing, special LNB supply power voltage etc., these methods all have some shortcomings.Non-standard down-conversion has caused a large amount of normal component in the existing industry to use, and the LNB of antenna and the TUNER at terminal (tuner) need customization.Special LNB supply power voltage is easy to transform power supply circuits and crosses restriction.So these are not best solutions.
Summary of the invention
The objective of the invention is to come in the domestic consumer to present satellite receiving terminal; In order to guarantee specificity that reception antenna equipment uses, to safeguard and provide the rules of country and the order in market between a kind of satellite receiving terminal and the reception antenna better based on the mutual Verification System of regulation agreement.The technical scheme that the present invention adopts is following:
The device of the two-way authentication of a kind of satellite receiving terminal and reception antenna, it is characterized in that satellite receiving terminal is connected through coaxial cable with reception antenna carries out data communication, and satellite receiving terminal is the reception antenna power supply through coaxial cable simultaneously;
Said satellite receiving terminal comprises authentication module A; Said authentication module A comprises tandom number generator A, encrypting module A, deciphering module B and comparison authentication module A;
Said tandom number generator A is used for satellite receiving terminal and produces the random number that proof procedure uses;
Said encrypting module A is used for random number or deciphering module B decrypted data that tandom number generator A produces are carried out encryption;
Said deciphering module B, the enciphered data that is used for the reception antenna that satellite receiving terminal receives is passed back is carried out decryption processing;
Said relatively authentication module A is used for the random number that tandom number generator A produces is compared with deciphering module B data decryption, simultaneously comparative result is sent to satellite receiving terminal and handles;
Said reception antenna comprises authentication module B, controllable electric power and tuner;
Said tuner is used for sending satellite receiving terminal to through coaxial cable after receiving satellite signal and frequency conversion are amplified;
Said authentication module B comprises tandom number generator B, encrypting module B, deciphering module A and comparison authentication module B;
Said tandom number generator B is used for reception antenna and produces the random number that proof procedure uses;
Said encrypting module B is used for the random number of tandom number generator B generation or the random number of deciphering module A deciphering are carried out encryption;
Said deciphering module A, the enciphered data that is used for reception antenna is received is carried out decryption processing;
Said relatively authentication module B is used for the random number of tandom number generator B generation and the data of deciphering module A reduction are compared, and comparative result is sent to controllable electric power;
Said controllable electric power, the result who is used to receive the comparatively validate unit decides tuner by still outage of setting-up time power supply;
Tandom number generator A in the said satellite receiving terminal among the authentication module A sends encrypting module A to by setting cycle generation random number and encrypts; Then these data are sent to reception antenna through coaxial cable; After authentication module B receives ciphered data in the said reception antenna; With data decryption, decrypted data is passed to satellite receiving terminal after encrypting through encrypting module B, after said satellite receiving terminal is received data through deciphering module A; Give comparison authentication module A through the deciphering module B among the authentication module A after with the data decryption of receiving; Relatively authentication module A judges whether these data are consistent with the random data that sends before, and inconsistent satellite receiving terminal stops to the reception antenna power supply, and the tandom number generator B generation random number among the interior authentication module B of consistent then reception antenna sends encrypting module B to and encrypts; Then these data are sent to satellite receiving terminal through coaxial cable; After authentication module A received ciphered data in the said satellite receiving terminal, with data decryption, decrypted data was passed to reception antenna after encrypting through encrypting module A through deciphering module B; After said reception antenna is received data; Give comparison authentication module B through the deciphering module A among the authentication module B after with the data decryption of receiving, relatively authentication module B judges whether these data are consistent with the random data that sends to satellite receiving terminal before, and inconsistent reception antenna is controlled controllable electric power and stopped tuner being supplied power; Unanimity then reception antenna control controllable electric power was supplied power to tuner in above-mentioned cycle time.
The method of the two-way authentication of a kind of satellite receiving terminal and reception antenna is characterized in that comprising the steps:
Step 1: checking is initiated by satellite receiving terminal;
Step 2: the communications protocol between satellite receiving terminal and the reception antenna is specified in advance; Satellite receiving terminal produces the random digit of protocol compliant and adopts AES to encrypt according to the authenticated module of this agreement, and with this cycle data property send to reception antenna;
Step 3: the authentication module in the reception antenna is deciphered the data that satellite receiving terminal sends, and then with this data encryption and return to satellite receiving terminal;
Step 4: satellite receiving terminal is received the data that reception antenna is beamed back, and deciphers, and the random digit that the data after will deciphering then produced with this cycle compares, if data consistent then carries out step 5, otherwise prompting antenna equipment authentification failure;
Step 5: reception antenna produces the random number of protocol compliant and adopts AES to encrypt according to the authenticated module of above-mentioned agreement, and these data are sent to satellite receiving terminal;
Step 6: the authentication module in the satellite receiving terminal is deciphered the data that reception antenna sends, and then this data encryption is sent to reception antenna;
Step 7: reception antenna receives the data that satellite receiving terminal is beamed back, after the deciphering itself and random number that step 5 produces compared, if data consistent then carries out step 8, otherwise a cut-out reception antenna medium-high frequency power supply;
Step 8: reception antenna authentication success, tuner are proceeded step 2 after in this cycle time, obtaining power supply.
After said step 4 comprises that also satellite receiving terminal is known the antenna equipment authentification failure, stop to step that introducing the antenna power supply.
AES in said step 2 and the step 5 adopts DES, AES or RSA cryptographic algorithms.
It is conspicuous comparing advantage of the present invention with prior art, specific as follows:
1) more existing technology are easy to be cracked, and are the information of change at random and the present invention transmits each other, can not imitate, and have increased and have cracked difficulty.
2) periodic authentication is reduced to minimum to satellite receiving terminal and reception antenna Effect on Performance.
3) greatly guaranteed specificity between satellite receiving terminal and the reception antenna.
4) the present invention only need increase a safe microcontroller on LNB, and hardware is made minimum change on the terminal, is easy to realize.
In addition,, not only be convenient to produce, and with low costly be suitable for extensive popularization because it is simple in structure.
Description of drawings
Fig. 1 is a system configuration sketch map of the present invention;
Fig. 2 is that authentication module according to the invention is formed structural representation;
Fig. 3 is a flow diagram of authentication procedures according to the invention.
Among the figure: 1, satellite receiving terminal, 2, reception antenna, 3, coaxial cable, 5, authentication module A; 501, tandom number generator A, 502, encrypting module A, 503, deciphering module B, 504, authentication module A relatively; 6, authentication module B, 601, tandom number generator B, 602, encrypting module B, 603, deciphering module A; 604, authentication module B relatively, 7, controllable electric power, 8, tuner.
Embodiment
In conjunction with accompanying drawing and embodiment the present invention is done further elaboration:
As depicted in figs. 1 and 2, satellite receiving terminal 1 is connected through coaxial cable 3 with reception antenna 2 and carries out data communication, and satellite receiving terminal 1 be that reception antenna 2 is supplied power through coaxial cable 3 simultaneously;
Said satellite receiving terminal 1 comprises authentication module A5; Said authentication module A5 comprises tandom number generator A501, encrypting module A502, deciphering module B503 and comparison authentication module A504;
Said tandom number generator A501 is used for satellite receiving terminal 1 and produces the random number that proof procedure uses;
Said encrypting module A502 is used for random number or deciphering module B decrypted data that tandom number generator A501 produces are carried out encryption;
Said deciphering module B503, the enciphered data that the reception antenna 2 that is used for that satellite receiving terminal 1 is received is passed back is carried out decryption processing;
Said relatively authentication module A504 is used for the random number that tandom number generator A501 produces is compared with deciphering module B503 data decryption, simultaneously comparison result is sent to satellite receiving terminal and handles;
Said reception antenna 2 comprises authentication module B6, controllable electric power 7 and tuner 8;
Said tuner 8 is used for sending satellite receiving terminal 1 to through coaxial cable 3 after receiving satellite signal and frequency conversion are amplified;
Said authentication module B6 comprises tandom number generator B601, encrypting module B602, deciphering module A603 and comparison authentication module B604;
Said tandom number generator B601 is used for reception antenna 2 and produces the random number that proof procedure uses;
Said encrypting module B602 is used for the random number of tandom number generator B601 generation or the random number of deciphering module A603 deciphering are carried out encryption;
Said deciphering module A603, the enciphered data that is used for reception antenna 2 is received is carried out decryption processing;
Said relatively authentication module B604 is used for the random number of tandom number generator B601 generation and the data of deciphering module A603 reduction are compared, and comparative result is sent to controllable electric power;
Said controllable electric power 7, the result who is used to receive the comparatively validate unit decides tuner 8 by still outage of setting-up time power supply;
Tandom number generator A501 in the said satellite receiving terminal 1 among the authentication module A5 sends encrypting module A502 to by setting cycle generation random number and encrypts; Then these data are sent to reception antenna 2 through coaxial cable 3; After authentication module B6 receives ciphered data in the said reception antenna 2; Through deciphering module A603 with data decryption; Decrypted data is passed to satellite receiving terminal 1 after encrypting through encrypting module B602, after said satellite receiving terminal 1 is received data, gives comparison authentication module A504 through the deciphering module B503 among the authentication module A5 after with the data decryption of receiving; Relatively authentication module A504 judges whether these data are consistent with the random data that sends before, and inconsistent satellite receiving terminal 1 stops to reception antenna 2 power supplies; Consistent then tandom number generator B601 generation random numbers among the reception antenna 2 interior authentication module B6 send encrypting module B602 to and encrypt; Then these data are sent to satellite receiving terminal 1 through coaxial cable 3; After authentication module A5 receives ciphered data in the said satellite receiving terminal 1; Through deciphering module B503 with data decryption; Decrypted data is passed to reception antenna 2 after encrypting through encrypting module A502, after said reception antenna 2 is received data, gives comparison authentication module B604 through the deciphering module A603 among the authentication module B6 after with the data decryption of receiving; Relatively authentication module B604 judges whether these data are consistent with the random data that sends to satellite receiving terminal 1 before, and inconsistent reception antenna 2 control controllable electric powers 7 stop tuner 8 power supplies; Unanimity then reception antenna 2 control controllable electric powers 7 was supplied power to tuner 8 in above-mentioned cycle time.Wherein DISEQC (Digital Satellite Equipment Control) 2.0 agreements can be adopted with communicating by letter of antenna in the terminal, also can self-defined communications protocol modulate data on the coaxial cable.The authentication module at general terminal is as the main equipment in the communication, and antenna is as the slave unit in the communication.The antenna verification terminal can be carried out according to the gap periods of appointing in advance.The terminal request antenna carries out authentication to it, if the terminal does not have request authentication in the cycle of agreement, then antenna can be taked the measure that corresponding restriction is used, like shutoff signal.Authentication module A5 can utilize the CPU of satellite receiving terminal 1 to realize with software, also can use independently authentication module as adopting safe microcontroller or other special circuit.Authentication module B6 and controllable electric power adopt safe microcontroller to realize, are built among the LNB.Random number, key length and AES can be selected according to the performance of hardware and the requirement of fail safe flexibly simultaneously.
Flow chart as shown in Figure 3 combines existing following hypothesis that the present invention is further specified:
1) suppose that random number is 64, key A, B also are 64, place two authentication modules respectively;
2) suppose that AES adopts DES, AES or RSA cryptographic algorithms;
3) suppose authentication in per 5 minutes once (being to be 5 minutes in the cycle), and authentication was carried out to antenna in the terminal before this, then was that antenna carries out authentication to the terminal.To antenna power supply 5 minutes, controllable electric power was to tuner power supply 5 minutes through a terminal in every authentication;
4) suppose that communications protocol adopts DISEQC 2.0 agreements of 22KHz;
5) suppose that waiting the pending data return time is 10 seconds, overtime expression relevant device is undesirable, and the failure of authentication antenna is directly stopped power supply to antenna equipment, and authentication terminal failure controllable electric power is stopped power supply to tuner.
In conjunction with Fig. 3, this method realizes as follows:
S100: satellite receiving terminal is started shooting, and antenna system is supplied power, and reception antenna gets into operating state.
S200: satellite receiving terminal produces random number R, and use DES algorithm and key A obtain A (R) after encrypting, and uses DISEQC 2.0 agreements to send to reception antenna through coaxial cable.
S300: reception antenna receives above-mentioned enciphered data, utilizes key A deciphering to obtain R ', encrypt with key B again and obtain B (R '), and with this number passback to satellite receiving terminal.
S400: the data that the satellite receiving terminal reception antenna is beamed back; Obtain R with key B deciphering "; through comparator itself and original data R are compared, if data consistent then carries out the authentication of reception antenna to satellite receiving terminal; carry out S500, otherwise satellite receiving terminal will stop reception antenna power supply and prompting authentification failure.
S500: because be master-slave communication mechanism, satellite receiving terminal is to receiving the antenna transmission authentication request, and reception antenna produces random number r, encrypts with key B and obtains B (r), sends to satellite receiving terminal.
S600: satellite receiving terminal receives above-mentioned enciphered data, obtains r ' with key B deciphering, encrypts with key A and obtains A (r '), gives reception antenna with this number passback.
S700: after reception antenna receives the data that satellite receiving terminal beams back; Obtain r with the key A deciphering "; through comparator itself and original data r are compared; if data consistent then carries out S800, otherwise the controllable electric power of reception antenna stops tuner power supply and satellite receiving terminal prompting authentification failure.
S800: to tuner power supply 5 minutes, 5 minutes finished continued and carry out S200.
After for safety S400 can comprise that also satellite receiving terminal is known the antenna equipment authentification failure, stop to step that introducing the antenna power supply.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical staff who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (3)
1. the device of the two-way authentication of satellite receiving terminal and reception antenna; It is characterized in that satellite receiving terminal (1) is connected through coaxial cable (3) with reception antenna (2) carries out data communication, and satellite receiving terminal (1) be that reception antenna (2) is supplied power through coaxial cable (3) simultaneously;
Said satellite receiving terminal (1) comprises authentication module A (5); Said authentication module A (5) comprises tandom number generator A (501), encrypting module A (502), deciphering module B (503) and compares authentication module A (504);
Said tandom number generator A (501) is used for satellite receiving terminal (1) and produces the random number that proof procedure uses;
Said encrypting module A (502) is used for random number or deciphering module B decrypted data that tandom number generator A (501) produces are carried out encryption;
Said deciphering module B (503), the enciphered data that the reception antenna (2) that is used for that satellite receiving terminal (1) is received is passed back is carried out decryption processing;
Said relatively authentication module A (504) is used for the random number that tandom number generator A (501) produces is compared with deciphering module B (503) data decryption, simultaneously comparative result is sent to satellite receiving terminal and handles;
Said reception antenna (2) comprises authentication module B (6), controllable electric power (7) and tuner (8);
Said tuner (8) is used for sending satellite receiving terminal (1) to through coaxial cable (3) after receiving satellite signal and frequency conversion are amplified;
Said authentication module B (6) comprises tandom number generator B (601), encrypting module B (602), deciphering module A (603) and compares authentication module B (604);
Said tandom number generator B (601) is used for reception antenna (2) and produces the random number that proof procedure uses;
Said encrypting module B (602) is used for the random number of tandom number generator B (601) generation or the random number of deciphering module A (603) deciphering are carried out encryption;
Said deciphering module A (603) is used for the enciphered data that reception antenna (2) receives is carried out decryption processing;
Said relatively authentication module B (604) is used for the random number of tandom number generator B (601) generation and the data of deciphering module A (603) reduction are compared, and comparative result is sent to controllable electric power;
Said controllable electric power (7), the result who is used to receive the comparatively validate unit decides tuner (8) is pressed still outage of setting-up time power supply;
Tandom number generator A (501) among the interior authentication module A of said satellite receiving terminal (1) (5) sends encrypting module A (502) to by setting cycle generation random number and encrypts; Then these data are sent to reception antenna (2) through coaxial cable (3); After the interior authentication module B of said reception antenna (2) (6) receives ciphered data; Through deciphering module A (603) with data decryption; Decrypted data is passed to satellite receiving terminal (1) after encrypting through encrypting module B (602); After said satellite receiving terminal (1) is received data; Give comparison authentication module A (504) through the deciphering module B (503) among the authentication module A (5) after with the data decryption of receiving; Relatively authentication module A (504) judges whether these data are consistent with the random data that sends before; Inconsistent satellite receiving terminal (1) stops to reception antenna (2) power supply, and unanimity then tandom number generator B (601) the generation random number among interior the authentication module B of reception antenna (2) (6) sends encrypting module B (602) to and encrypts, and then these data is sent to satellite receiving terminal (1) through coaxial cable (3); After the interior authentication module A of said satellite receiving terminal (1) (5) receives ciphered data; With data decryption, decrypted data is passed to reception antenna (2) after encrypting through encrypting module A (502), after said reception antenna (2) is received data through deciphering module B (503); Give comparison authentication module B (604) through the deciphering module A (603) among the authentication module B (6) after with the data decryption of receiving; Relatively authentication module B (604) judges whether these data are consistent with the random data that sends to satellite receiving terminal (1) before, and inconsistent reception antenna (2) control controllable electric power (7) stops tuner (8) power supply, and unanimity then reception antenna (2) control controllable electric power (7) was supplied power to tuner (8) in above-mentioned cycle time.
2. the method for the two-way authentication of satellite receiving terminal and reception antenna is characterized in that comprising the steps:
Step 1: checking is initiated by satellite receiving terminal;
Step 2: the communications protocol between satellite receiving terminal and the reception antenna is specified in advance; Satellite receiving terminal produces the random digit of protocol compliant and adopts AES to encrypt according to the authenticated module of this agreement, and this data encrypted is periodically sent to reception antenna;
Step 3: the authentication module in the reception antenna is deciphered the data that satellite receiving terminal sends, and then with this data encryption and return to satellite receiving terminal;
Step 4: satellite receiving terminal is received the data that reception antenna is beamed back, and deciphers, and the random digit that the data after will deciphering then produced with this cycle compares, if data consistent then carries out step 5, otherwise prompting antenna equipment authentification failure;
Step 5: reception antenna produces the random number of protocol compliant and adopts AES to encrypt according to the authenticated module of above-mentioned agreement, and these data are sent to satellite receiving terminal;
Step 6: the authentication module in the satellite receiving terminal is deciphered the data that reception antenna sends, and then this data encryption is sent to reception antenna;
Step 7: reception antenna receives the data that satellite receiving terminal is beamed back, after the deciphering itself and random number that step 5 produces compared, if data consistent then carries out step 8, otherwise a cut-out reception antenna medium-high frequency power supply;
Step 8: reception antenna authentication success, tuner are proceeded step 2 after in this cycle time, obtaining power supply.
3. the method for the two-way authentication of a kind of satellite receiving terminal according to claim 2 and reception antenna, it is characterized in that said step 4 comprises that also satellite receiving terminal is known the antenna equipment authentification failure after, stop step to reception antenna power supply.
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| CN2010105317429A CN101977073B (en) | 2010-10-28 | 2010-10-28 | Bidirectional authentication system for satellite receiving terminal and receiving antenna |
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| CN2010105317429A CN101977073B (en) | 2010-10-28 | 2010-10-28 | Bidirectional authentication system for satellite receiving terminal and receiving antenna |
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| CN103260153B (en) * | 2012-05-07 | 2015-07-15 | 中国交通通信信息中心 | Satellite communication service system |
| CN102694589B (en) * | 2012-05-22 | 2015-09-02 | 航天数字传媒有限公司 | A kind of tuner, receiver and satellite receiving system |
| CN104038937A (en) * | 2014-06-24 | 2014-09-10 | 中国科学院软件研究所 | Network access authentication method applicable to satellite mobile communication network |
| CN104469330B (en) * | 2015-01-04 | 2017-09-12 | 安徽波维电子科技有限公司 | The outdoor unit anti-theft device of satellite television receiving system |
| CN104486601B (en) * | 2015-01-04 | 2017-06-30 | 安徽波维电子科技有限公司 | The outdoor unit theft preventing method of satellite television receiving system |
| WO2018053844A1 (en) * | 2016-09-26 | 2018-03-29 | 华为技术有限公司 | Security authentication method, integrated circuit and system |
| CN106714005B (en) * | 2016-12-27 | 2019-08-13 | 深圳市九洲电器有限公司 | Satellite set top box data transmission method and system |
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| CN1643816A (en) * | 2002-01-24 | 2005-07-20 | 因特威夫通讯有限公司 | Communication system having a community wireless local area network for voice and high speed data communication |
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