CN204258827U - Quantum key distribution central controller - Google Patents
Quantum key distribution central controller Download PDFInfo
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- CN204258827U CN204258827U CN201420411142.2U CN201420411142U CN204258827U CN 204258827 U CN204258827 U CN 204258827U CN 201420411142 U CN201420411142 U CN 201420411142U CN 204258827 U CN204258827 U CN 204258827U
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Abstract
The utility model discloses a kind of quantum key distribution central controller, control system is connected with the receiving terminal QKD-R of quantum key distribution equipment, receiving terminal QKD-R is connected with quantum optical switch routing device by internal optical fiber interface, and quantum light route-exchanging device is provided with exterior light interface; Exterior light interface is used for being connected with the transmitting terminal QKD-T of the quantum key distribution equipment of far-end; Quantum key distribution equipment receiving terminal is N number of, N >=1; Exterior light interface is 2N, N >=1, and exterior light interface is used for being connected with the transmitting terminal QKD-T of 2N quantum key distribution equipment of far-end.The utility model reduces the use amount of the receiving terminal of quantum key distribution equipment, flexible for installation, and cost is low; Enhance manageability and the fail safe of whole network.The utility model, in remote quantum cryptography communication, also can be used as the credible relay point of quantum, extends quantum cryptography communication distance.
Description
Technical field
The utility model belongs to quantum cryptography communication technical field, and particularly the conceptual design of KDC's controller and implementation method in quantum cryptography communication network, particularly relate to a kind of quantum key distribution central controller.
Background technology
Quantum cryptography communication combines quantum physics principle and modern communication technology.Quantum cryptography communication ensures the fail safe of strange land cipher key agreement process and result by physical principle, is combined, can realizes the secure communication not relying on algorithm complex with " one-time pad " encryption technology.In recent years, quantum cryptography communication system obtains the extensive concern of international academic community, scientific and technological circle and national strategy aspect, has become the grand strategy direction of cryptographic technique of new generation development.The Main Developed Countries such as the U.S., European Union, Japan successively deploy the construction plan of quantum cryptography communication network, and quantum communications Yi Cheng China gives special assistance to industry.
At present, the primary amount subcipher communication technology both domestic and external and solution all originate from universities and colleges, laboratory, research emphasis emphasizes the advance, perspective of principle and technology, and therefore research drops into the upper demand lacked aspects such as network construction cost, networking generalization, management practicality.The networkings such as U.S. DAPRA quantum cryptography communication network, European SECOQC quantum cryptography communication network, Tokyo quantum secret communication net, Wuhu quantum E-gov Network, Shandong quantum cryptography communication try net day by day increase, load application is more and more close to practical, and quantum cryptography communication technology industrialization has applied a step nearer.
The process of quantum key distribution determine these demonstrations, test, Authentication-Type network mainly with based on point-to-point quantum key distribution network, by directly adding up or being expanded by optical switch, router, but final network is still and adopts point-to-point quantum key distribution, namely a quantum key distribution equipment need respectively be disposed at each network node, the more equipment of control centre's node placement, distributes the negotiation of the point-to-point key of each network node reality to meet.Such networking mode ensure that the speed of quantum key distribution; the larger construction cost adding network; and Centroid can not provide a large amount of fiber resources time more, still need to re-start fiber resource construction, be unfavorable for applying of scale.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art; a kind of quantum key distribution central controller and method are provided; this quantum key distribution central controller and method are applicable in the actual scale application of quantum cryptography communication technology; can the receiving terminal of reduction quantum key distribution equipment, solve the technical problem that the high construction cost of quantum cryptography communication network, networking difficulty and administrative center's key distribution control.
For achieving the above object, the technical solution adopted in the utility model is: quantum key distribution central controller, comprises the receiving terminal QKD-R of quantum key distribution equipment, quantum light route-exchanging device and control system; Described control system is connected with the receiving terminal QKD-R of quantum key distribution equipment by network interface, and the receiving terminal QKD-R of quantum key distribution equipment is connected with quantum optical switch routing device by optical fiber, and quantum light route-exchanging device is provided with optical interface; Described optical interface is used for being connected with the transmitting terminal QKD-T of the quantum key distribution equipment of far-end; Described quantum key distribution equipment is N number of, and the receiving terminal QKD-R of described quantum key distribution equipment is also N number of, N >=1; Described optical interface is 2N, N >=1, and accordingly, described optical interface is used for being connected with the transmitting terminal QKD-T of 2N quantum key distribution equipment of far-end, and an optical interface is connected with the transmitting terminal QKD-T of a quantum key distribution equipment.
The utility model additionally provides a kind of quantum key distribution central control method, comprises the following steps:
Request connects: the transmitting terminal QKD-T of quantum key distribution equipment sends quantum key distribution communication connection request when requirement sub-key to quantum key distribution central controller;
Examination & verification: the control system of quantum key distribution central controller is audited quantum key distribution communication connection request;
Connect: audit by rear, control system Stochastic choice is in the receiving terminal QKD-R of the quantum key distribution equipment of idle condition, and the transmitting terminal QKD-T of quantum key distribution equipment is connected with the receiving terminal QKD-R of the quantum key distribution equipment being in idle condition; If examination & verification is not passed through, then control system does not inquire about the receiving terminal QKD-R of the quantum key distribution equipment being in idle condition, but continues to wait for quantum key distribution communication connection request;
Connect after waiting for: if there is no the quantum key distribution equipment receiving terminal QKD-R of idle condition, then control system enters connection wait state, when having the receiving terminal QKD-R of quantum key distribution equipment for time idle, the receiving terminal QKD-R of the quantum key distribution equipment of random selecting free time, the transmitting terminal QKD-T making quantum key distribution equipment connect with the receiving terminal QKD-R of the quantum key distribution equipment being in idle condition;
Authentication theory: make quantum key distribution equipment be deployed in 1-2N network node respectively, when needing to set up shared key between node A and Node B, quantum key distribution central controller uses key K
bto key K
abe encrypted, i.e. K=E (K
b, K
a), then K is issued Node B; The key K of Node B use oneself
bbe decrypted, i.e. K
/=D (K
b, K), K
/=K
a, to make to set up shared key K between node A and Node B
a; The like, make all can obtain shared symmetric key between all partial nodes.
Operation principle: in quantum cryptography communication network, addition quantum key distribution central controller is proposed, the utility model is made up of quantum key distribution equipment, quantum light route-exchanging device, control system, wherein the equipment such as quantum light route-exchanging device taste quantum optical switch, quantum router.In quantum cryptography communication networking, the utility model is deployed in central administration node, each key distribution branch node by Fiber connection on the utility model.Control system is connected with quantum key distribution equipment receiving terminal by network interface or USB interface or Serial interface or other interfaces that can be used for transfer of data.Because quantum cryptography communication network has been mainly used in safe key distribution, and the encrypted device keys in existing network generally upgraded once at 1-168 hours, once do not upgrade 128-1024 not etc., the speed of standing crop quantum key distribution can meet its requirement far away.Therefore the utility model is on design realizes, consider from the production cost of quantum key distribution equipment, add the receiving terminal of the quantum key distribution equipment that 1-N does not wait, be connected by the transmitting terminal of quantum light route-exchanging device with the quantum key distribution equipment of N-6N or more, thus reach the object of reduction quantum key distribution equipment receiving terminal; Simultaneously, the utility model is responsible for making the receiving terminal of the transmitting terminal of arbitrary quantum key distribution equipment and quantum key distribution equipment set up quantum key distribution process at any one time, ensure that the safe handling of key, effectively can ensure not random by the user of key request for utilization initiation key distribution communication.During actual deployment, when Centroid fiber resource deficiency, also quantum light route-exchanging device can be deployed in central machine room (optical fiber convergence place), reduce the construction complexity of network.
Beneficial effect: 1, the utility model designs and introduces quantum key distribution central controller and method in quantum cryptography communication network, comprising the control system that joins request, enhances manageability and the fail safe of whole network; 2, in the utility model, the deployment of quantum light route-exchanging device has flexibility, when the fiber resource abundance of the quantum key distribution central controller as center control nodes, this device section can be deployed in Centroid, when fiber resource is deficient, can central machine room be deployed in, reduce greatly the complexity of networking and again lay the high cost that optical fiber brings; 3, the utility model design is at the receiving terminal disposing a small amount of quantum key distribution equipment at Centroid, expanded by quantum light route-exchanging device, can complete and a large amount of partial node quantum key distribution equipment transmitting terminal between encryption key distribution, greatly reduce the use amount of the receiving terminal of quantum key distribution equipment, reduce the construction cost of network; 4, the utility model also introduces the mode that cipher key center encryption forwards, and ensure that the secure distribution of each partial node of quantum cryptography communication network symmetric key when non-fiber is direct-connected.5, when the spacing of two nodes is greater than the distance of point-to-point quantum cryptography communication, central administration node also has the effect of quantum repeater, extends the distance of point-to-point quantum cryptography communication.In a word, the utility model can reduce the use amount of the receiving terminal of quantum key distribution equipment, has flexibility during installation, reduces cost; It additionally enhances manageability and the fail safe of whole network.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the connection diagram of QKD-T of the present utility model and optical interface.
Fig. 3 is workflow schematic diagram of the present utility model.
Fig. 4 is the schematic flow sheet of Authentication theory step in embodiment 2.
Below in conjunction with accompanying drawing, execution mode of the present utility model is described further.
Embodiment
Embodiment 1
See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, this quantum key distribution central controller, comprises the receiving terminal QKD-R of quantum key distribution equipment, quantum light route-exchanging device and control system; Described control system is connected with the receiving terminal QKD-R of quantum key distribution equipment by network interface, and the receiving terminal QKD-R of quantum key distribution equipment is connected with quantum optical switch routing device by optical fiber, and quantum light route-exchanging device is provided with optical interface; Described optical interface is used for being connected with the transmitting terminal QKD-T of the quantum key distribution equipment of far-end; Described quantum key distribution equipment is N number of, and the receiving terminal QKD-R of described quantum key distribution equipment is also N number of, N >=1; Described optical interface is 2N, N >=1, and accordingly, described optical interface is used for being connected with the transmitting terminal QKD-T of 2N quantum key distribution equipment of far-end, and an optical interface is connected with the transmitting terminal QKD-T of a quantum key distribution equipment.
Embodiment 2
See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, this quantum key distribution central control method, comprises the following steps:
Request connects: the transmitting terminal QKD-T of quantum key distribution equipment sends quantum key distribution communication connection request when requirement sub-key to quantum key distribution central controller;
Examination & verification: the control system of quantum key distribution central controller is audited quantum key distribution communication connection request;
Connect: audit by rear, control system Stochastic choice is in the receiving terminal QKD-R of the quantum key distribution equipment of idle condition, and the transmitting terminal QKD-T of quantum key distribution equipment is connected with the receiving terminal QKD-R of the quantum key distribution equipment being in idle condition; If examination & verification is not passed through, then control system does not inquire about the receiving terminal QKD-R of the quantum key distribution equipment being in idle condition, but continues to wait for quantum key distribution communication connection request;
Connect after waiting for: if there is no the quantum key distribution equipment receiving terminal QKD-R of idle condition, then control system enters connection wait state, when having the receiving terminal QKD-R of quantum key distribution equipment for time idle, the receiving terminal QKD-R of the quantum key distribution equipment of random selecting free time, the transmitting terminal QKD-T making quantum key distribution equipment connect with the receiving terminal QKD-R of the quantum key distribution equipment being in idle condition;
Authentication theory: make quantum key distribution equipment be deployed in 1-2N network node respectively, when needing to set up shared key between node A and Node B, quantum key distribution central controller uses key K
bto key K
abe encrypted, i.e. K=E (K
b, K
a), then K is issued Node B; The key K of Node B use oneself
bbe decrypted, i.e. K
/=D (K
b, K), K
/=K
a, to make to set up shared key K between node A and Node B
a; The like, make all can obtain shared symmetric key between all partial nodes.
Claims (1)
1. a quantum key distribution central controller, comprises the receiving terminal QKD-R of quantum key distribution equipment, quantum light route-exchanging device and control system; It is characterized in that: described control system is connected with the receiving terminal QKD-R of quantum key distribution equipment by communication interface, the receiving terminal QKD-R of quantum key distribution equipment is connected with quantum optical switch routing device by internal optical fiber interface, and quantum light route-exchanging device is provided with exterior light interface; Described exterior light interface is used for being connected with the transmitting terminal QKD-T of the quantum key distribution equipment of far-end; The receiving terminal QKD-R of described quantum key distribution equipment is N number of, N >=1; Described exterior light interface is 2N, N >=1, and accordingly, described exterior light interface is used for being connected with the transmitting terminal QKD-T of 2N quantum key distribution equipment of far-end, and an exterior light interface is connected with the transmitting terminal QKD-T of a quantum key distribution equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420411142.2U CN204258827U (en) | 2014-07-24 | 2014-07-24 | Quantum key distribution central controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420411142.2U CN204258827U (en) | 2014-07-24 | 2014-07-24 | Quantum key distribution central controller |
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| CN204258827U true CN204258827U (en) | 2015-04-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219042A (en) * | 2014-07-24 | 2014-12-17 | 安徽问天量子科技股份有限公司 | Quantum key distribution central control device and quantum key distribution central control method |
| US12028450B2 (en) | 2016-11-04 | 2024-07-02 | Huawei Technologies Co., Ltd. | Quantum key relay method based on centralized management and control network, and apparatus |
-
2014
- 2014-07-24 CN CN201420411142.2U patent/CN204258827U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219042A (en) * | 2014-07-24 | 2014-12-17 | 安徽问天量子科技股份有限公司 | Quantum key distribution central control device and quantum key distribution central control method |
| US12028450B2 (en) | 2016-11-04 | 2024-07-02 | Huawei Technologies Co., Ltd. | Quantum key relay method based on centralized management and control network, and apparatus |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 241003 No. 12, Zhanghe Road, hi tech Zone, Anhui, Wuhu Patentee after: Anhui Asky Quantum Technology Co., Ltd. Address before: 241002 Anhui science and technology innovation public service center, Wuhu national hi tech Zone, Yijiang Patentee before: Anhui Asky Quantum Technology Co., Ltd. |