CN114172586A - Electro-optical double-carrier free space quantum encryption communication method - Google Patents
Electro-optical double-carrier free space quantum encryption communication method Download PDFInfo
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- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
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Abstract
The invention discloses an electro-optical double-carrier free space quantum encryption communication method, a system and a storage medium, which are implemented by relying on a wireless communication system comprising a radio communication module and a quantum key distribution module: the quantum key distribution module searches for a fixed access station within a tracking sight distance range, establishes free space optical channel connection, then implements duplex bidirectional quantum key distribution and automatically stores effective keys into a quantum key pool; the radio communication module calls effective quantum keys in the quantum key pool in sequence and carries out 'one-time pad' communication service with all devices in the same quantum key self-consistent domain through the radio access station. The invention closely combines the technical advantages of flexible and controllable radio communication random access and the security attribute of free space quantum key distribution, effectively utilizes the bandwidth advantage of the free space optical carrier to make up the disadvantage of non-all-weather connection of an optical channel, and lays a solid foundation for the wireless communication system to open up quantum secret communication service.
Description
Technical Field
The invention belongs to the interdisciplinary field of radio communication, free space optical communication and quantum communication, in particular to a free space quantum secret communication method for realizing quantum key distribution by using an optical quantum carrier and ciphertext information transmission by using a radio carrier, and particularly relates to a method, a system and a storage medium for electro-optical double-carrier free space quantum encryption communication of key data.
Background
The quantum communication is mainly based on the Heisebarg inaccurate measurement principle, the quantum inseparable principle, the quantum unclonable principle and the like, theoretically has unconditional safety information transmission capability, and can effectively prevent an eavesdropper from intercepting, eavesdropping, interpreting and modifying communication signals under the condition of not causing the perception of both communication parties. At the present stage, the most mature is the quantum secret communication technology, the quantum key distribution technology and the classical communication technology are organically combined, and the one-time pad working mode also has the transmission capability of mathematically proven unconditional safety information.
Quantum key distribution is the core of quantum secret communication, and at present, mainstream quantum key distribution systems mainly use light quantum as a quantum state information carrier (carrier). According to the application scene, the quantum key distribution system can be divided into an optical fiber quantum key distribution system and a free space quantum key distribution system which are respectively oriented to fixed network optical cable quantum secret communication and free space quantum secret communication, wherein the former is relatively mature, and the latter is restricted by a plurality of factors and develops slowly. It should be noted that, it is difficult to generate an electrical quantum (carrier wave) capable of carrying quantum state information in the current technology, and an effective free space quantum secret communication means based on a radio communication channel is lacking at present.
Disclosure of Invention
Aiming at the prior art, the technical problem to be solved by the invention is how to utilize a quantum key distribution module to search and track a fixed access station in a sight distance range, connect the fixed access station to a quantum key self-consistent domain (all devices in the self-consistent domain establish a quantum key exchange mechanism through real-time distribution or key storage) through a free space optical channel, and realize real-time quantum key distribution and quantum key storage; the radio communication module calls the effective quantum key in sequence, connects the nearest wireless access site and opens free space quantum secret communication service with all devices in the quantum key self-consistent domain where the wireless access site is located.
In order to achieve the effect, the electro-optical double-carrier free space quantum encryption communication method provided by the invention is executed by a wireless communication system, a quantum key is distributed and stored through a free space optical channel and a fixed access station, meanwhile, quantum encrypted plaintext information is transmitted through a radio communication link, and quantum secret communication service which is opened by any device in a quantum key self-consistent domain where the fixed access station is located is provided.
Preferably, the method specifically comprises:
step one, free space quantum key distribution and storage, namely a quantum key distribution module in a wireless communication system searches for a fixed access station within a tracking visual distance range, and after establishing free space optical channel connection, duplex bidirectional quantum key distribution is implemented and an effective key is automatically stored in a quantum key pool;
and step two, radio quantum secret communication, wherein the radio communication module calls effective quantum keys in the quantum key pool in sequence and carries out single secret communication service with all devices in the same quantum key self-consistent domain through the radio access station.
Preferably, the information shared by the two communication parties meets the non-cloning requirement and the non-copying requirement, and the two communication parties can provide error quantum bits through negotiation interaction and information post-processing to obtain a synchronously shared quantum true random number sequence.
Preferably, the quantum key distribution protocol includes, but is not limited to, BB84 protocol, E91 protocol, BBM92 protocol, high-dimensional quantum key distribution protocol, time-energy entanglement protocol, TF protocol, continuous variable quantum key distribution protocol;
preferably, the information carrier includes, but is not limited to, photons, spintrons;
preferably, the quantum channels include, but are not limited to, optical fiber, cable, free space;
preferably, the above encoding degrees of freedom include, but are not limited to, polarization, time bit, phase, frequency, mode field, spin direction.
Preferably, the quantum key pool is formed by a physical method or a logical method;
preferably, the quantum key in the quantum key pool needs to be marked with position information and sequence number information;
preferably, the quantum key pool is not provided with a man-machine interface, and only receives the call of a radio communication module, and any operation of disassembling a system and reading a key can cause the zero clearing operation or even the self-destruction operation of the quantum key pool;
preferably, the quantum key pool charging and storing is performed synchronously with the device charging, and is implemented through an optical fiber interface, a free space interface and an electrical interface.
Preferably, the radio communication module is configured to sequentially take the quantum key from the quantum key pool when the quantum key is not sufficiently distributed in real time, detect and monitor a remaining amount of the quantum key pool, remind a user when the quantum key is not sufficient, switch to a non-quantum secure mode, connect to the nearest fixed access station, and perform quantum secure communication with each device in a quantum key self-consistent domain where the fixed access station is located.
Preferably, the devices are connected by a fixed network optical cable/free space quantum key distribution system, or are temporarily not connected but have been automatically charged with sufficient quantum keys in a quantum key pool, the quantum key exchange mode, the quantum key exchange rate, the type and the connection mode of the quantum key self-consistent domain device and the storage time of the quantum key pool are not limited.
Preferably, the physical method is a direct storage quantum state, the logical method is a large-capacity memory, the position information is a fixed access station identity mark, and the serial number information is universal for the whole network.
A system for realizing the electro-optical double-carrier free space quantum encryption communication method comprises a wireless communication system, a fixed access station, a wireless access station, an optical fiber communication system and a quantum key pool, wherein a quantum key is not shared between the wireless access station and the fixed access station;
preferably, the wireless communication system comprises a quantum key distribution module and a radio communication module, and is used for searching for a fixed access station within a tracking and aiming line-of-sight range, implementing duplex bidirectional quantum key distribution after establishing free space optical channel connection, and automatically storing an effective key into a quantum key pool;
preferably, the radio communication module calls the effective quantum key in the quantum key pool in sequence, and carries out single secret communication service with all devices in the same quantum key self-consistent domain through the radio access station;
preferably, the wireless communication system and the fixed access station are connected by a free space optical channel;
preferably, the quantum key pool is not provided with a man-machine interface, and only receives the call of a radio communication module, and any operation of disassembling a system and reading a key can cause the zero clearing operation or even the self-destruction operation of the quantum key pool;
preferably, the radio communication module takes the quantum keys from the quantum key pool in sequence when the real-time distributed quantum keys are insufficient, detects and monitors the allowance of the quantum key pool to remind a user when the keys are insufficient, switches to a non-quantum secret mode, is connected to the nearest fixed access station, and performs quantum secret communication with each device in a quantum key self-consistent domain where the fixed access station is located;
preferably, the devices are connected by a fixed network optical cable/free space quantum key distribution system, or are temporarily not connected but have been automatically filled with sufficient quantum keys in a quantum key pool.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
Compared with the prior art, the invention has the following advantages:
1. the invention provides an electro-optical double-carrier free space quantum secret communication method compatible with the existing radio communication system, which has the technical advantages of flexible and controllable access in radio communication and the inherent safety transmission capability of free space quantum key distribution;
2. the quantum key automatic storage mode without human intervention can efficiently utilize the free space optical channel to maintain the time window to distribute and store the quantum key as much as possible, provides important reference for radio communication and quantum key rate adaptation, and makes up the inherent defect that a free space quantum communication system does not work all weather;
3. the free space quantum secret communication method can run in parallel with other password schemes, is highly compatible with the existing radio communication network architecture, and can lay a solid foundation for the quantum secret communication transmission service of the radio communication network.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating the principle of the electro-optical dual-carrier free space quantum secure communication of the present invention;
fig. 2 shows a schematic diagram of the mode of self-consistent domain networking of the wireless communication system and the quantum key of the invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiment provides an electro-optical double-carrier free space quantum encryption communication method, which comprises the following steps:
s1, distributing and storing free space quantum key, that is, a quantum key distribution module in the wireless communication system searches for a fixed access station in a tracking visual distance range, and after establishing free space optical channel connection, the duplex bidirectional quantum key distribution is implemented and the effective key is automatically stored in a quantum key pool;
s2, radio quantum secret communication, that is, the radio communication module calls the effective quantum key in the quantum key pool in sequence, and carries out 'one-time pad' communication service with all devices in the same quantum key self-consistent domain through the radio access station.
The invention provides an embodiment of an electro-optical double-carrier free space quantum encryption communication method, which comprises the following steps: the wireless communication system distributes and stores the quantum key through the free space optical channel and the fixed access station, and transmits the quantum encrypted plaintext information through the radio communication link, so as to realize the quantum secret communication service which is opened by any equipment in the domain self-consistent with the quantum key where the fixed access station is located.
The invention provides an embodiment of an electro-optical double-carrier free space quantum encryption communication method, which comprises the following steps:
s101, a quantum key distribution module in a wireless communication system searches for a fixed access station in a line-of-sight range, establishes and maintains a free space optical channel, performs real-time duplex bidirectional quantum key distribution, and automatically stores an effective quantum key into a quantum key pool, wherein the quantum key pool is not provided with a man-machine interface and only receives the call of the wireless communication system, and any operation of disassembling the system and reading the key causes the zero clearing operation (executed by a system disassembly monitoring module) of the quantum key pool, so that the equipment-level autonomous use and control of the quantum key are ensured;
s102, a radio communication module (when the quantum key is insufficient in real-time distribution) sequentially takes the quantum key from the quantum key pool, detects and monitors the allowance of the quantum key pool (when the quantum key is insufficient, a user is reminded, and the quantum key pool is switched to a non-quantum secret mode), is connected to the nearest fixed access station (wireless access station), and carries out quantum secret communication with each device in a quantum key self-consistent domain where the fixed access station is located.
The invention also provides a method for realizing electro-optical double-carrier free space quantum encryption communication, which is executed by a wireless communication system, distributes and stores quantum keys through a free space optical channel and a fixed access station, simultaneously transmits quantum encrypted plaintext information through a radio communication link, and carries out quantum secret communication service which is opened by any equipment in a quantum key self-consistent domain where the fixed access station is located, wherein the wireless communication system is connected with the fixed access station through the free space optical channel, once a quantum key distribution module is connected, quantum key distribution, negotiation error correction and information post-processing are started, and generated effective keys are sequentially charged into a quantum key pool.
Preferably, in some embodiments, the information shared by both communication parties meets the non-clonable requirement and the non-duplicable requirement, and the both communication parties can propose error qubits by negotiation interaction and information post-processing to obtain the synchronously shared quantum true random number sequence.
Preferably, in some embodiments, the quantum key distribution protocol includes, but is not limited to, BB84 protocol, E91 protocol, BBM92 protocol, high-dimensional quantum key distribution protocol, time-energy entanglement protocol, TF protocol, continuous variable quantum key distribution protocol.
Preferably, in some embodiments, the information carrier includes, but is not limited to, photons, spintrons.
Preferably, in some embodiments, the quantum channel includes, but is not limited to, optical fiber, cable, free space.
Preferably, in some embodiments, the encoding degrees of freedom include, but are not limited to, polarization, time bit, phase, frequency, mode field, spin direction.
Preferably, in some embodiments, the quantum key pool is constructed by a physical method or by a logical method; quantum keys in the quantum key pool need to be marked with position information and sequence number information; the quantum key pool is not provided with a man-machine interface, only the calling of a radio communication module is received, and any operation of disassembling the system and reading the key can cause the zero clearing operation of the quantum key pool and even the self-destruction operation; the quantum key pool is charged and stored synchronously with the equipment, and is implemented through an optical fiber interface, a free space interface and an electrical interface.
Preferably, in some embodiments, the radio communication module takes the quantum keys from the quantum key pool in sequence when the quantum key is not enough for real-time distribution, and detects and monitors the remaining amount of the quantum key pool to remind the user when the quantum key is not enough, switches to the non-quantum secret mode, connects to the nearest fixed access station, and performs quantum secret communication with each device in the quantum key self-consistent domain where the fixed access station is located.
Preferably, in some embodiments, the devices are connected by a fixed-network optical cable/free-space quantum key distribution system, or are temporarily not connected but have been automatically charged with sufficient quantum keys in the quantum key pool, the quantum key exchange mode is not limited, the quantum key exchange rate is not limited, the quantum key self-consistent domain device type and connection mode are not limited, and the quantum key pool storage time is not limited.
Preferably, in some embodiments, the physical method is configured to directly store the quantum state, the logical method is configured to be a large-capacity memory, the location information is a fixed access station identity tag, and the serial number information is universal over the entire network.
As shown in fig. 1, the present invention further provides an embodiment of an electro-optical dual-carrier free-space quantum secure communication method, where both communication parties (a wireless communication system in motion and a stationary fixed access station) are composed of a radio communication module, a quantum key distribution module, and a quantum key pool: the radio communication module establishes a communication link based on a radio carrier, and the quantum key distribution module establishes a free space optical channel through the tracking and aiming system. The electro-optical double-carrier free space quantum secret communication comprises three working modes:
1. the real-time communication mode is that a stable free space optical channel is established between the wireless communication system and the fixed access station and the quantum key can be distributed in real time, and at the moment, the quantum key is directly called by the wireless communication module and is subjected to one-time pad XOR with plaintext information;
2. a non-real-time communication mode, namely, a free space optical channel is not established between the wireless communication system and the fixed access station or the quantum key rate is lower than the radio communication rate, and at the moment, the radio communication module needs to call a quantum key from a quantum key pool and perform one-time pad exclusive or with plaintext information;
3. in the key storage mode, since the duration of the free space optical channel is usually much shorter than the connection time of the radio communication link, when the wireless communication system and the fixed access station establish the free space optical channel but do not perform radio communication, the quantum key still needs to be distributed in real time and charged in the quantum key pool.
The invention also provides an embodiment of a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
The invention provides an embodiment of an electro-optical double-carrier free space quantum encryption communication method, which can provide quantum secret communication service for any device in a quantum key self-consistent domain where a wireless access system and a fixed access station are located. The quantum key self-consistent domain refers to that all devices are connected by a fixed network optical cable/free space quantum key distribution system or are temporarily not connected but have sufficient quantum keys automatically (without human interference) stored in a quantum key pool.
Fig. 2 shows an exemplary wireless communication system and quantum key self-consistent domain networking mode, in which A, B, C represents fixed access stations, D represents optical fiber communication systems, F represents wireless access stations, and E, G represents different wireless communication systems, respectively; the solid line represents a fixed-line optical cable connection, the dotted line represents a free space optical channel, the electric wave represents a radio communication link, and the key represents that the two communication parties share and store a sufficient number of quantum keys. In this case, the quantum key self-consistent domain capable of quantum secret communication with the wireless communication system G includes:
1. the fixed access station A and the fixed access station G can directly carry out free space quantum secret communication;
2. the fixed access station B, C and the optical fiber communication system D exchange quantum keys with the A through the fixed network optical cable, and then carry out free space quantum secret communication with the G;
3. the wireless communication system E exchanges the quantum key with the B through a free space optical channel, exchanges the quantum key with the A through a fixed network optical cable and finally carries out free space quantum secret communication with the G;
4. the wireless communication system H exchanges (stores) the quantum key with the system C, exchanges the quantum key with the system A through the fixed network optical cable, and finally carries out free space quantum secret communication with the system G;
in some embodiments, the radio access station F and the fixed access station C do not share a quantum key, and therefore do not belong to the quantum key self-consistent domain category, and cannot perform free space quantum secret communication with G.
Compared with the prior art, the invention has the following advantages:
1. the invention provides an electro-optical double-carrier free space quantum secret communication method compatible with the existing radio communication system, which has the technical advantages of flexible and controllable access in radio communication and the inherent safety transmission capability of free space quantum key distribution;
2. the quantum key automatic storage mode without human intervention can efficiently utilize the free space optical channel to maintain the time window to distribute and store the quantum key as much as possible, provides important reference for radio communication and quantum key rate adaptation, and makes up the inherent defect that a free space quantum communication system does not work all weather;
3. the free space quantum secret communication method can run in parallel with other password schemes, is highly compatible with the existing radio communication network architecture, and can lay a solid foundation for the quantum secret communication transmission service of the radio communication network.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. An electro-optical double-carrier free space quantum encryption communication method is executed by a wireless communication system, a quantum key is distributed and stored through a free space optical channel and a fixed access station, quantum encrypted plaintext information is transmitted through a radio communication link, and quantum secret communication service opened by any equipment in a quantum key self-consistent domain where the fixed access station is located is provided.
2. The electro-optical dual-carrier free-space quantum cryptography communication method according to claim 1, specifically comprising:
step one, free space quantum key distribution and storage, namely a quantum key distribution module in a wireless communication system searches for a fixed access station within a tracking visual distance range, and after establishing free space optical channel connection, duplex bidirectional quantum key distribution is implemented and an effective key is automatically stored in a quantum key pool;
and step two, radio quantum secret communication, wherein the radio communication module calls effective quantum keys in the quantum key pool in sequence and carries out single secret communication service with all devices in the same quantum key self-consistent domain through the radio access station.
3. The electro-optical dual-carrier free space quantum encryption communication method according to claim 1 or 2, wherein the information shared by both communication parties meets the unclonable requirement and the irreproducible requirement, and the both communication parties can extract the error quantum bit through negotiation interaction and information post-processing to obtain the synchronously shared quantum true random number sequence.
4. The electro-optical dual-carrier free-space quantum cryptography communication method according to claim 1 or 2, wherein the quantum key distribution protocol includes, but is not limited to, BB84 protocol, E91 protocol, BBM92 protocol, high-dimensional quantum key distribution protocol, time-energy entanglement protocol, TF protocol, continuous variable quantum key distribution protocol;
the information carrier includes, but is not limited to, photons, spintrons;
the quantum channels include, but are not limited to, optical fiber, cable, free space;
the encoding degrees of freedom include, but are not limited to, polarization, time bit, phase, frequency, mode field, spin direction.
5. The electro-optical dual-carrier free-space quantum cryptography communication method according to claim 1 or 2,
the quantum key pool is formed by a physical method or a logic method;
the quantum key in the quantum key pool needs to be marked with position information and sequence number information;
the quantum key pool is not provided with a man-machine interface, only calls of a radio communication module are received, and any operation of disassembling a system and reading a key causes zero clearing operation or even self-destruction operation of the quantum key pool;
the quantum key pool is charged and stored synchronously with the equipment, and is implemented through an optical fiber interface, a free space interface and an electrical interface.
6. The electro-optical dual-carrier free space quantum encryption communication method according to claim 1 or 2, wherein the radio communication module sequentially takes quantum keys from a quantum key pool when the quantum keys are distributed in real time and are insufficient, detects and monitors the surplus of the quantum key pool, reminds a user when the quantum keys are insufficient, switches to a non-quantum secret mode, connects to a nearest fixed access station, and performs quantum secret communication with each device in a quantum key self-consistent domain where the fixed access station is located.
7. The electro-optical dual-carrier free-space quantum encryption communication method according to claim 1 or 2, wherein the devices are connected by a fixed network optical cable/free-space quantum key distribution system, or are temporarily not connected but have been automatically charged with sufficient quantum keys in a quantum key pool, and the quantum key exchange mode, the quantum key exchange rate, the quantum key self-consistent domain device type and connection mode, and the quantum key pool storage time are not limited.
8. The electro-optical dual-carrier free-space quantum encryption communication method according to claim 5, wherein the physical method is a direct storage quantum state, the logical method is a large-capacity memory, the location information is a fixed access station identity tag, and the serial number information is universal for the whole network.
9. A system for implementing the electro-optical dual-carrier free-space quantum cryptography communication method according to claims 1-8, comprising a wireless communication system, a fixed access station, a wireless access station, a fiber optic communication system, and a quantum key pool, wherein no quantum key is shared between the wireless access station and the fixed access station;
the wireless communication system comprises a quantum key distribution module and a radio communication module, and is used for searching fixed access stations within a tracking and aiming sight distance range, implementing duplex bidirectional quantum key distribution after establishing free space optical channel connection and automatically storing effective keys into a quantum key pool;
the radio communication module calls effective quantum keys in a quantum key pool in sequence and carries out single secret communication service with all devices in the same quantum key self-consistent domain through a wireless access station;
the wireless communication system and the fixed access station are connected by a free space optical channel;
the quantum key pool is not provided with a man-machine interface, only calls of a radio communication module are received, and any operation of disassembling a system and reading a key causes zero clearing operation or even self-destruction operation of the quantum key pool;
the radio communication module is used for taking quantum keys from a quantum key pool in sequence when the quantum keys are distributed in real time and are insufficient, detecting and monitoring the surplus of the quantum key pool, reminding a user when the keys are insufficient, switching to a non-quantum secret mode, connecting to a nearest fixed access station, and carrying out quantum secret communication with each device in a quantum key self-consistent domain where the fixed access station is located;
the devices are connected by a fixed network optical cable/free space quantum key distribution system, or are temporarily not connected but automatically store enough quantum keys in a quantum key pool.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 8.
Priority Applications (1)
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| US20130101119A1 (en) * | 2010-06-15 | 2013-04-25 | Los Alamos National Security Llc | Quantum key distribution using card, base station and trusted authority |
| US20170250805A1 (en) * | 2016-02-29 | 2017-08-31 | The Board Of Trustees Of The University Of Illinois | Reconfigurable Free-Space Quantum Cryptography System |
| CN110247765A (en) * | 2019-06-25 | 2019-09-17 | 湖北凯乐量子通信光电科技有限公司 | A kind of quantum secure data link communications system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130101119A1 (en) * | 2010-06-15 | 2013-04-25 | Los Alamos National Security Llc | Quantum key distribution using card, base station and trusted authority |
| US20170250805A1 (en) * | 2016-02-29 | 2017-08-31 | The Board Of Trustees Of The University Of Illinois | Reconfigurable Free-Space Quantum Cryptography System |
| CN110247765A (en) * | 2019-06-25 | 2019-09-17 | 湖北凯乐量子通信光电科技有限公司 | A kind of quantum secure data link communications system |
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