CN203859823U - Quantum encrypted video conference terminal and system - Google Patents
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- CN203859823U CN203859823U CN201420149459.3U CN201420149459U CN203859823U CN 203859823 U CN203859823 U CN 203859823U CN 201420149459 U CN201420149459 U CN 201420149459U CN 203859823 U CN203859823 U CN 203859823U
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Abstract
The utility model provides a quantum encrypted video conference terminal. Devices or modules at users of a video conference utilizing quantum encryption technologies are organically integrated into an integral whole. The video conference terminal provided by the utility model is compact in structure and high in integration degree, can realize uniform test, maintenance and management for the devices or the modules which are integrated in the terminal, realizes integration and terminalization of quantum encrypted video conference equipment, and can also be flexibly networked with a quantum gateway and establish point-to-point or multipoint encrypted communication. In addition, encryption/decryption and transmission of audio/video signals are completed on the video conference terminal, and CPU computing resources of the quantum gateway or other equipment are not occupied. The quantum encrypted video conference terminal can also be compatible with input and output of analog/digital video signals at the same time so as to adapt to various video recording and displaying hardware environments.
Description
Technical field
The utility model relates to Technique on Quantum Communication field, especially relates to a kind of video conference terminal and video conferencing system of combination Data Encryption Techniques.
Background technology
In video conference occasion, often need to be encrypted the content of video conference, prevent that assailant from passing through some technological means and spy out the content of meeting.Before Data Encryption Techniques is applied to video conference, the encryption technology that partial video conference system adopts is gathering link unencryption, but until video data acquiring after main frame, again it is used the mode of soft encryption, this mode efficiency is lower, even may affect the fluency of video; Partial video meeting adopts in collection link the cipher mode based on difficult math question algorithm complexity and the key that are easier to be cracked.If the less demanding fashion of security classification can be tackled, along with the fast development of computer technology, CPU arithmetic speed is more and more faster, crack ability more and more stronger, particularly the following quantum computer that may occur, makes the video data acquiring cipher mode based on mathematical algorithm complexity more and more be difficult to meet the video conference needs under high security classification occasion.
Data Encryption Techniques (Quantum Key Distribution, is after this abbreviated as: QKD) is the means of communication of current unique unconditional security of generally acknowledging, is expected to fundamentally solve this classic network core difficult problem of communication security.It proposed (Bennett C.H.and Brassard is cryptography:public key distribution and coin tossing Proc.IEEE Int.Conf.on Computers G.1984Quantum, Systems and Signal Processing) by C.Bennett and G.Brassard the earliest in 1984.The scheme that they propose is commonly referred to as BB84 agreement, the Unconditional security of this agreement is the earliest by D.Mayers(Mayers D.Unconditional security in quantum cryptography.JACM, 2001,48:351 – 406) prove, thereafter the people such as P.Shor has provided the proof scheme (Shor greatly simplifying, P.W.and J.Preskill, 2000, Simple Proof of Security of the BB84Quantum Key Distribution Protocol, Phys.Rev.Lett.85,441.).
BB84 agreement is used the carrier of single photon quantum state as secret information, but because actual light source is not pure single-photon source, tends to produce a certain proportion of multi-photon event; This makes the fail safe of real system more complicated.2004, the people such as D.Gottesman have provided the safety analysis (Gottesman of the QKD system that imperfect device is formed, D., H.-K.Lo, N.L ¨ utkenhaus, and J.Preskill, 2004, Security of quantum key distribution with imperfect devices, Quant.Inf.Comput.4,325.).Non-perfect single-photon source is summed up as to mark single photon scheme, has provided final security password refinement coefficient and the relation of parameters.But, in the people's such as D.Gottesman analysis, not providing a good method for the upper limit how to estimate mark single photon event ratio in whole measurement event, this is restricted the actual safe distance of QKD.
2005, Wang Xiangbin and Luo Kaiguang have provided independently and utilized the method (Wang that inveigles state scheme accurate analysis multi-photon event ratio simultaneously, X.-B., 2005, Beating the Photon-Number-Splitting Attack in Practical Quantum Cryptography, Phys.Rev.Lett.94, 230503.Lo, H.-K., X.Ma, and K.Chen, 2005, Decoy State Quantum Key Distribution, Phys.Rev.Lett.94, 230504.), thereby greatly improve the safe distance of actual QKD system, reach more than 100 kilometers, this makes QKD possess practical value.
At present, optical fiber Technique on Quantum Communication has entered practical stage, has been applied to networking communication.The technology of setting up QKD network is also very ripe, can on commercial fiber optic network, build QKD network.QKD Experimental Network has all been built by Europe, the U.S., Japan, China etc., and number of network node can reach dozens of.
But those skilled in the art state quantum cryptography communication equipment especially when video conference device in the use, find to exist following shortcoming:
In the time building video conferencing system, each parts such as the audio devices at user place, video-unit, network connection device, quantum key device (comprising encryption and decryption accelerating module, quantum key memory module etc.) are all the devices of independent hash, the device of these independent hash need to be connected with the corresponding interface of the central control unit that contains microprocessor, set up very complicated, and test, maintenance and management relatively disperse, be difficult for holistic management; In addition, if while forming grid by multiple users and quantum gateway, networking is more complicated, management, maintenance are got up also more difficult.
Summary of the invention
Based on above problem, the utility model provides a kind of video conference terminal, in connection with each device at the Users of Video Conference System place of Data Encryption Techniques and or module organically integrated, be integrated into an entirety, be easy to test, maintenance and management.It is emphasized that, above-mentioned each device and or module with regard to monomer, its realization answers the concrete structure of practical function to exist in the prior art separately, each device and or module related agreement while carrying out work disposal, software or program also exist in the prior art, those skilled in the art fully know, as described above, the utility model be not to each device and or the monomer of module what do improve, therefore do not relate to the content of software, but propose one how by each device and or module organically integrated, be integrated into an entirety, a kind of structural scheme is provided.
A kind of quantum cryptography video conference terminal, this terminal comprises:
A kind of quantum cryptography video conference terminal, comprising: power module, vision signal input/output interface, audio signal input/output interface, coding and decoding video chip, audio coding decoding chip, encryption and decryption accelerating module, quantum key memory module, microprocessor, network exchanging chip, quantum key input interface, network interface card, network interface, data-interface, user instruction interface;
Described microprocessor connects respectively encryption and decryption accelerating module, network interface card, coding and decoding video chip, audio coding decoding chip, user instruction interface, data-interface;
Encryption and decryption accelerating module also connects quantum key memory module and quantum key input interface successively, and described quantum key input interface is externally for connecting quantum gateway;
Also interconnection network exchange chip, network interface successively of described network interface card; Described network exchanging chip can also externally connect quantum gateway;
Described audio coding decoding chip also connects audio signal input/output interface; Audio signal input/output interface comprises one or more analog/digital audio video signal input interface, and one or more audio signal output interface; Further, described audio signal input/output interface comprises one or more of TRS interface, RCA interface, XLR interface, S/PDIF interface and D-sub interface.
Described coding and decoding video chip also connects vision signal input/output interface; Vision signal input/output interface comprises one or more analog/digital video signal input interface, and one or more video signal output interface; Further, described vision signal input/output interface comprises one or more of aberration interface, S terminal interface, VGA interface and HDMI interface.
User's operational order interface passes to microprocessor for the instruction that connects outside user's operating equipment and they are sent;
Described data-interface is for externally connecting user's data input device and user's data service being passed to microprocessor;
Power module is by its interface (not shown) power taking, and be that microprocessor, coding and decoding video chip, audio coding decoding chip, encryption and decryption accelerating module, quantum key memory module, network exchanging chip, network interface card and the interface that is connected with them are powered;
Further, described video conference terminal is a board, and described vision signal input/output interface, audio signal input/output interface, coding and decoding video chip, audio coding decoding chip, encryption and decryption accelerating module, quantum key memory module, microprocessor, network exchanging chip, quantum key input interface, network interface card, network interface, data-interface, user instruction interface are all installed on this board.Or further, described power module is also installed on described board.Under this kind of state, this terminal is exactly a board, can be loaded on certain slot in quantum gateway device.
Further, also comprise a housing (being shell), board and power module are all arranged in housing, and each interface exposes housing.Under this kind of state, this terminal is an independently equipment, is connected by corresponding data wire with quantum gateway.
Further, this terminal also comprises maintenance interface, and maintenance interface is arranged on casing, or is directly installed on board, uses for maintenance and the upgrading of terminal.
Further, described housing also includes two side ears, for being fixed to rack.
Further, described housing also comprises static socket, for preventing electrostatic influence.
The utility model also provides the organization plan that uses described video terminal to build video network conference system: comprise at least two group set of terminal, each set of terminal comprises an interconnective described video conference terminal and a quantum gateway, video conference terminal also connects audio frequency, video input/output device (comprising microphone, audio amplifier, display etc.), between the quantum gateway of each set of terminal, throughput sub-network interconnects, and between the video conference terminal of each set of terminal, interconnects by classic network.
Advantage and the good effect that the utlity model has are: the utility model by utilize Data Encryption Techniques each device of Users of Video Conference System place and or module organically integrated, be integrated into an entirety, a kind of compact conformation is provided, the video conference terminal that integrated level is high, can realize being integrated in each composition device or the unified test of module in this terminal, maintenance and management, realize the integrated and terminated of quantum cryptography video conference device, can also with quantum gateway flexible networking, build point-to-point, the speech scrambling of multiple spot, and audio-video signal encryption and decryption and transmission all complete on video conference terminal, the not CPU calculation resources of occupancy subnet pass or other equipment, input and the output of compatible analog/digital vision signal simultaneously, to adapt to various video productions and viewing hardware environment.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model video conference terminal
Fig. 2 is the point-to-point video conferencing system communication scheme that adopts the utility model composition
Fig. 3 is the multi-spot video conference system communication scheme that adopts the utility model composition
Fig. 4 is the structural representation of the utility model while being arranged in quantum gateway
In figure: 1, video conference terminal; 2, quantum gateway; 3, power module; 4, vision signal input/output interface; 5, audio signal input/output interface; 6, coding and decoding video chip; 7, audio coding decoding chip; 8, encryption and decryption accelerating module; 9, quantum key memory module; 10, microprocessor; 11, network exchanging chip; 12, quantum key input interface; 13, network interface card module; 14, network interface; 15, data-interface; 16, user instruction interface; A1, the first quantum gateway; B1, the second quantum gateway; C1, the 3rd quantum gateway; A2, the first video conference terminal; B2, the second video conference terminal; C2, the 3rd video conference terminal; 201, quantum gateway rear portion cabinet; 202, the anterior cabinet of quantum gateway.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
As shown in Figure 1, a kind of quantum cryptography video conference terminal 1, comprising: power module 3, vision signal input/output interface 4, audio signal input/output interface 5, coding and decoding video chip 6, audio coding decoding chip 7, encryption and decryption accelerating module 8, quantum key memory module 9, microprocessor 10, network exchanging chip 11, quantum key input interface 12, network interface card 13, network interface 14, data-interface 15, user instruction interface 16;
Described microprocessor is the central control unit of video conference terminal, the whole workflow of controlling video conference terminal, it connects respectively encryption and decryption accelerating module 8, network interface card 13, coding and decoding video chip 6, audio coding decoding chip 7, user instruction interface 16, data-interface 15; In the present embodiment, microprocessor can be selected the 66AK2Hx main control processor that Texas Instruments produces.
Encryption and decryption accelerating module also connects quantum key memory module and quantum key input interface successively, and described quantum key input interface is externally for connecting quantum gateway; Encryption and decryption accelerating module 7 is for encrypting digital video signal use amount sub-key or deciphering.Quantum key memory module 8 is for storing the required business cipher key of digital video signal encryption and decryption, and the quantum key that these business cipher keys are transmitted by quantum gateway 2 forms, and is divided into multiple buffer areas when storage, for supporting the encryption and decryption needs of multiple talk business.In the present embodiment, encryption and decryption accelerating module can adopt the SJK1322PCI-E cipher card that meets national Password Management office the latest specification; Quantum key memory module can adopt SAMSUNG EMMC chip KLM8G1WE4A-A001; Quantum key input interface can adopt USB2.0HUB chip/UPD720114GA-YEU-A.
Also interconnection network exchange chip 11, network interface 14 successively of described network interface card; Described network exchanging chip 11 can also externally connect quantum gateway by its interface; Network exchange part can adopt the 66K chip of TI to realize.
Described audio coding decoding chip 7 also connects audio signal input/output interface 5; Audio signal input/output interface comprises one or more analog/digital audio video signal input interface, and one or more audio signal output interface; Audio coding decoding chip 7 is for being converted to by gathering the analog/digital audio signal coming the G.723.1 digital audio and video signals that video conferencing system is supported, or by digital video signal be H.263 converted to analog video signal with and other digital video signals of supporting of display.Audio signal input/output interface 5, for receiving from the audio frequency digital-to-analog audio signal collecting of originating, comprises one or more of TRS interface, RCA interface, XLR interface, S/PDIF interface and D-sub interface.
Described coding and decoding video chip 6 also connects vision signal input/output interface; Vision signal input/output interface comprises one or more analog/digital video signal input interface, and one or more video signal output interface; Coding and decoding video chip 6 is for being converted to by gathering the analog/digital vision signal of coming the H.263 digital video signal that video conferencing system is supported, or by digital video signal be H.263 converted to analog video signal with and other digital video signals of supporting of display; Vision signal input/output interface 4, for receiving the digital-to-analog vision signal collecting from source video sequence, comprises one or more of aberration interface, S terminal interface, VGA interface and HDMI interface.
Above-mentioned audio coding decoding chip 7 and coding and decoding video chip 6 also can adopt by the chip of integrated both functions and realize, such as the TMS320DM8148 audio frequency and video compression chip that adopts Texas Instruments to produce.
User's operational order interface is for connecting outside user's operating equipment, and as remote controller, mouse, keyboard etc., and the instruction that they are sent passes to microprocessor 10;
Described data-interface 15 is for externally connecting user's data input device; Data-interface 15 is for passing to microprocessor 10 by user's data service
Power module is by its interface (not shown) power taking, and be that microprocessor 10, coding and decoding video chip 6, audio coding decoding chip 7, encryption and decryption accelerating module 8, quantum key memory module 9, network exchanging chip 11, network interface card 13 and the interface that is connected with them are powered;
Vision signal input/output interface is for receiving the analog video signal collecting and analog video signal externally being exported.
Described coding and decoding video module for changing between analog video signal and digital video signal.
Described quantum key memory module, for storing enciphering/deciphering digital video, the required quantum key of audio signal, itself is provided with multiple buffer areas, and piecemeal is stored different meetings and the required key of different business, and these quantum keys are transmitted by quantum gateway.
Described encryption and decryption accelerating module, according to the instruction of microprocessor, is encrypted and deciphers with quantum key digital sound, vision signal valid data part after conversion.
Described network exchanging chip connects and carries out transfer of data by network interface for the treatment of network.
The operation principle of the video conference terminal after integrated is as follows:
Described video conference terminal uses the letter agreement of standard to complete the calling of video conference and control (as used the H.225 agreement in agreement H.323 to complete calling, complete video control by agreement H.245, or use Session Initiation Protocol to complete and call out and control), the processing of these agreements completes in described microprocessor.
Video conference terminal throughput subkey data interface, from quantum gateway amount to obtain sub-key, leaves in the respective cache district of quantum key memory module.
Analog or digital vision signal enters described video conference terminal by signal input interface, coding and decoding video chip be converted into video conference terminal support data format (as H.263 H.261); Microprocessor is sent the data after conversion into encryption and decryption accelerating module, the quantum key getting before using is encrypted for it, the encrypt data obtaining after encrypting is delivered to network exchanging chip, then be transferred to other video conference terminals or the MCU in classic network by network interface.
Analog or digital audio signal enters described video conference terminal by signal input interface, audio coding decoding chip be converted into the data format that video conference terminal supports (as G.711 G.723.1 etc.); Microprocessor is sent the data after conversion into encryption and decryption accelerating module, and the quantum key that encryption and decryption accelerating module gets before using is encrypted for it; The encrypt data obtaining after encryption is sent again microprocessor back to, and microprocessor is delivered to network exchanging chip after being encapsulated as IP packet, then is transferred to other video conference terminals or the MCU in classic network by network interface.
Video conference terminal receives by network interface after the IP packet that comprises ciphering multimedia data, be transferred to microprocessor via network exchanging chip and network interface card, microprocessor is peeled off protocol header, and data division is wherein transferred to obtain expressly after the deciphering of encryption and decryption accelerating module quantum key.Expressly send back to after microprocessor carries out that corresponding mixed flow, time delay are synchronous etc. and process, be converted to after the digital signal of analog signal or extended formatting by corresponding coding/decoding module again, then export corresponding player to from vision signal input/output interface or audio signal input/output interface.
Described video conference terminal repeats said process, can set up other secret video conferences.
Meeting is cancelled or exited to described video conference terminal successively, and delete corresponding quantum key from buffer area.
Utilize this video conference terminal can build several video conferencing systems:
Fig. 2 has provided a kind of point-to-point video conferencing system: as shown in Figure 2, between the video conference terminal A2 of participation video conference and B2, have classic network channel, simultaneously between quantum gateway A 1 separately and B1, also have shared quantum channel, wherein quantum channel makes A1 and B1 both sides can share safely one section of quantum key, and leaves in respectively in both sides' video conference terminal A2 and B2.After meeting starts, video conference terminal A2 gathers after video, uses the quantum key of oneself to encrypt it, and is transferred to by classic network the opposing party's conference terminal B2 that participates in video conference, conference terminal B2 obtains former video after using the quantum key deciphering shared with the other side, and shows.In like manner, conference terminal B2 is also transferred to one's own side's video image conference terminal A2 and shows in the mode of safety according to identical mode, has so just realized the secure video meeting based on quantum key.In this process, conference terminal A2 and B2 have adopted cipher mode end to end, even if middle classic network link is eavesdropped by people, but listener-in is due to owning amount sub-key not, and due to the restriction of physical laws, cannot on quantum channel, intercept and capture the quantum key that both sides are shared, thereby cannot decode ciphertext, also just cannot see or what the person that hears conference participation discussing on earth.
Fig. 3 has provided a kind of video conferencing system pattern of multipoint mode: as shown in Figure 3, between video conference terminal C2 and other video conference terminals, there is classical passage, its quantum gateway C1 is connected with other quantum gateway throughput sub-networks, and therefore C1 and other quantum gateways can have shared quantum key.A2 and B2 have set up a video conference, in the time that C2 attempts to add meeting, C2 adds meeting according to the mode of common conference call, and C2 obtains corresponding quantum key from its gateway C1 simultaneously, thereby one's own side's audio, video data can be encrypted and given A2 and B2.A2 and B2 can utilize the data of original secret key decryption C2, thereby normally the audio, video data of C2 are mixed in original audio/video flow, realize tripartite talks.In this process, conference terminal A2, B2 and C2 have adopted cipher mode end to end, even if middle classic network link is eavesdropped by people, but listener-in is due to owning amount sub-key not, and due to the restriction of physical laws, cannot on quantum channel, intercept and capture the quantum key that both sides are shared, thereby cannot decode ciphertext, also just cannot see or what the person that hears conference participation discussing on earth.
You need to add is that in addition:
1, vision signal input/output interface 4 is supported aberration access, the access of S terminal, VGA access and HDMI access, but also can, through transformation, include other various types of vision signal access waies in.
2, audio signal input/output interface 4 is supported TRS interface, RCA interface, XLR interface and S/PDIF interface, but also can, through transformation, include other various types of audio signal access waies in.
3, the embodiment of described quantum key input interface 12, can be implemented as pci interface, part that can be using video conference terminal 1 as quantum gateway 2, be plugged on physics mode in the internal slots of quantum gateway 2, also can realize by the mode of USB interface, video conference terminal 1, as independent sector, is connected to quantum gateway 2 with the pluggable form in outside.
4, have in limited time at Internet resources, described network exchanging chip 11 can be closed videoconference data throughput subnet to send by configuration, and the Internet resources that utilization subnet closes are realized video conference call.
5, video conference terminal is a board, described vision signal input/output interface, audio signal input/output interface, coding and decoding video chip, audio coding decoding chip, encryption and decryption accelerating module, quantum key memory module, microprocessor, network exchanging chip, quantum key input interface, network interface card, network interface, data-interface, user instruction interface are all installed on this board, power module can be installed on this board, also can individualism.In addition, also can comprise a housing, board and power module are all arranged in housing, and each interface exposes housing.
Above embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the utility model scope, within all should still belonging to this patent covering scope.
Claims (10)
1. a quantum cryptography video conference terminal, is characterized in that comprising: power module, vision signal input/output interface, audio signal input/output interface, coding and decoding video chip, audio coding decoding chip, encryption and decryption accelerating module, quantum key memory module, microprocessor, network exchanging chip, quantum key input interface, network interface card, network interface, data-interface, user instruction interface;
Described microprocessor connects respectively encryption and decryption accelerating module, network interface card, coding and decoding video chip, audio coding decoding chip, user instruction interface, data-interface;
Encryption and decryption accelerating module also connects quantum key memory module and quantum key input interface successively, and described quantum key input interface is externally for connecting quantum gateway;
Also interconnection network exchange chip, network interface successively of described network interface card; Described network exchanging chip can also externally connect quantum gateway;
Described audio coding decoding chip also connects audio signal input/output interface; Audio signal input/output interface comprises one or more analog/digital audio video signal input interface, and one or more audio signal output interface;
Described coding and decoding video chip also connects vision signal input/output interface; Vision signal input/output interface comprises one or more analog/digital video signal input interface, and one or more video signal output interface;
User's operational order interface passes to microprocessor for the instruction that connects outside user's operating equipment and they are sent;
Described data-interface is for externally connecting user's data input device and user's data service being passed to microprocessor;
Power module is by its interface power taking, and be that microprocessor, coding and decoding video chip, audio coding decoding chip, encryption and decryption accelerating module, quantum key memory module, network exchanging chip, network interface card and the interface that is connected with them are powered.
2. video conference terminal according to claim 1, is characterized in that: described audio signal input/output interface comprises one or more of TRS interface, RCA interface, XLR interface, S/PDIF interface and D-sub interface.
3. video conference terminal according to claim 1, is characterized in that: described vision signal input/output interface comprises one or more of aberration interface, S terminal interface, VGA interface and HDMI interface.
4. video conference terminal according to claim 1, it is characterized in that: described video conference terminal is a board, described vision signal input/output interface, audio signal input/output interface, coding and decoding video chip, audio coding decoding chip, encryption and decryption accelerating module, quantum key memory module, microprocessor, network exchanging chip, quantum key input interface, network interface card, network interface, data-interface, user instruction interface are all installed on this board.
5. video conference terminal according to claim 4, is characterized in that: described power module is also installed on described board.
6. video conference terminal according to claim 4, is characterized in that: also comprise a housing, board and power module are all arranged in housing, and each interface exposes housing.
7. according to the video conference terminal described in claim 4 or 6, it is characterized in that: this terminal also comprises maintenance interface.
8. video conference terminal according to claim 6, is characterized in that: described housing also includes two side ears, for being fixed to rack.
9. video conference terminal according to claim 1, is characterized in that: described housing also comprises static socket, for preventing electrostatic influence.
10. a video network conference system that utilizes the video conference terminal described in claim 1 to build, is characterized in that, comprising:
At least two group set of terminal, each set of terminal comprises an interconnective described video conference terminal and a quantum gateway, video conference terminal also connects audio frequency, video input/output device, between the quantum gateway of each set of terminal, throughput sub-network interconnects, and between the video conference terminal of each set of terminal, interconnects by classic network.
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| CN201420149459.3U CN203859823U (en) | 2014-03-28 | 2014-03-28 | Quantum encrypted video conference terminal and system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105071933A (en) * | 2015-09-07 | 2015-11-18 | 安徽问天量子科技股份有限公司 | Quantum data terminal applied to PSTN public network |
| CN106791688A (en) * | 2017-01-03 | 2017-05-31 | 济南中维世纪科技有限公司 | Video monitoring system based on Technique on Quantum Communication |
| CN107769912A (en) * | 2016-08-16 | 2018-03-06 | 广东国盾量子科技有限公司 | A kind of quantum key chip and the encipher-decipher method based on quantum key chip |
| CN109088727A (en) * | 2018-08-29 | 2018-12-25 | 苏州科达科技股份有限公司 | Data ciphering method, device and electronic equipment |
| CN110535634A (en) * | 2019-07-12 | 2019-12-03 | 江苏宇太网智科技有限公司 | Audio-video transmission system based on quantum cryptography |
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2014
- 2014-03-28 CN CN201420149459.3U patent/CN203859823U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105071933A (en) * | 2015-09-07 | 2015-11-18 | 安徽问天量子科技股份有限公司 | Quantum data terminal applied to PSTN public network |
| CN105071933B (en) * | 2015-09-07 | 2018-02-06 | 安徽问天量子科技股份有限公司 | Quantal data terminal applied to PSTN public networks |
| CN107769912A (en) * | 2016-08-16 | 2018-03-06 | 广东国盾量子科技有限公司 | A kind of quantum key chip and the encipher-decipher method based on quantum key chip |
| CN106791688A (en) * | 2017-01-03 | 2017-05-31 | 济南中维世纪科技有限公司 | Video monitoring system based on Technique on Quantum Communication |
| CN109088727A (en) * | 2018-08-29 | 2018-12-25 | 苏州科达科技股份有限公司 | Data ciphering method, device and electronic equipment |
| CN110535634A (en) * | 2019-07-12 | 2019-12-03 | 江苏宇太网智科技有限公司 | Audio-video transmission system based on quantum cryptography |
| CN110535634B (en) * | 2019-07-12 | 2020-04-14 | 江苏宇太网智科技有限公司 | Audio and video transmission system based on quantum encryption |
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