CN107786334A - A kind of quantum key distribution all-in-one machine realization method - Google Patents
A kind of quantum key distribution all-in-one machine realization method Download PDFInfo
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- CN107786334A CN107786334A CN201711353168.0A CN201711353168A CN107786334A CN 107786334 A CN107786334 A CN 107786334A CN 201711353168 A CN201711353168 A CN 201711353168A CN 107786334 A CN107786334 A CN 107786334A
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- quantum key
- information
- realization method
- quantum
- key distribution
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
- H04L9/0858—Details about key distillation or coding, e.g. reconciliation, error correction, privacy amplification, polarisation coding or phase coding
Abstract
The invention provides a kind of quantum key distribution all-in-one machine realization method, including at least following steps：Decode the coding information received；Quantum key is generated by the information of the decoding；Receive the information that the first classical channel transmits；Quantum key is prepared concurrently to send；By the second classical channel transmission information, the distribution and reception that quantum key is carried out while consolidated network node can be realized, it is not necessary to lay network in addition, it is not required that while assume independent transmitting terminal and receiving terminal, networking is convenient, while also reduces cost.
Description
【Technical field】
The present invention relates to quantum cryptography communication, more particularly to quantum key distribution system.
【Background technology】
In current quantum encryption communication technology, COW agreements and BB84 agreements are all typical communication protocol in Technique on Quantum Communication.
Wherein, COW agreements are also known as relevant consistent quantum key communication protocol, and fiber phase quantum key communication system so far
A kind of quantum communications agreement relatively ripe in system.Its main operational principle is as follows：COW agreements mainly include transmitting terminal
Alice and receiving terminal Bob, transmitting terminal main function is to prepare the single-photon source needed for quantum key distribution, and passes through light pulse
Encode corresponding information.Receiving terminal possesses an interference ring（Different from the BB84 agreements of classics, the transmitting terminal of BB84 agreements also needs
Want interference ring）, for decoding through the encoded information of transmitting terminal, and compared by common signal channel, in transmitting terminal and receiving terminal
Produce the quantum key of safety.Information can be encrypted and decrypted for the key ultimately generated using this, so as to realize information
Security transmissions.Because quantum state has the characteristic of nonclonability, uncertainty and measurement Ta Shrink, it ensure that and passed
The key sent can not be eavesdropped effectively, the final absolute safety ensured by the transmitted breath of classical channel.Pass through COW agreements
The transmitting terminal and receiving terminal built carry out the transmission and generation of key, are formed a point-to-point quantum key distribution system
System.
In existing technology, the quantum key distribution system based on COW agreements and BB84 agreements is all single system, such as
Transmitting terminal and receiving terminal are discrete systems.Because quantum key distribution system is all point-to-point transmission, this system
The problem of one can be brought very inconvenient, if a place arranged net not only needs to send but also need to receive key, then no
Obtain and do not place two equipment simultaneously in this place（One is used for quantum key information, and one is used to receive quantum key
Information）.This mode not only needs to take larger networking space, while also increases the input of cost, and the amount of being unfavorable for
The integrated and functional diversities of quantum key distribution system.
In consideration of it, real be necessary to propose a kind of all-in-one machine realization method that can receive key and can and send key.
【The content of the invention】
The invention provides a kind of quantum key distribution all-in-one machine realization method, can on the same node on realize quantum key
Reception and distribution.
According to the quantum key distribution all-in-one machine realization method of the present invention, including at least following steps：What decoding received
Coding information；Quantum key is generated by the information of the decoding；Receive the information that the first classical channel transmits；It is close to prepare quantum
Key is simultaneously sent；Pass through the second classical channel transmission information.
Further, the coding information received that decodes is completed by interference ring.
Further, the information by the decoding generates quantum key and included：Obtained using single-photon detector
Corresponding quantum key information simultaneously sends FPGA mainboards to, and caused random number is sent to described by the first randomizer
FPGA mainboards, the FPGA mainboards are compared by the random number of acquisition with the quantum key information.
Further, receiving the information that the first classical channel transmits includes：First data-interface, first data are set
Interface is SFP interfaces, and data message is received by first data-interface.
Further, it is described prepare quantum key send include：The FPGA mainboards are produced by the second randomizer
Raw random number prepares quantum key, and the sub-circuit board by preparing single-photon source sends the quantum key.
Further, first randomizer is quantum random number generator, for being received with the detecting module
To signal be compared.
Further, it is described to be included by the second classical channel transmission information：Second data-interface, second number are set
It is SFP interfaces according to interface, data message is sent by second data-interface.
By the quantum key distribution all-in-one machine realization method of the present invention, it can realize and enter while consolidated network node
The distribution and reception of row quantum key, it is not necessary to lay network in addition, it is not required that while assume independent transmitting terminal and reception
End, networking is convenient, while also reduces cost.
【Brief description of the drawings】
Fig. 1 is schematic structural view of the invention；
Fig. 2 is implementation method flow chart of the present invention.
【Embodiment】
As shown in figure 1, quantum key distribution all-in-one of the present invention includes：Decoder module, for decoding the coding information received；Visit
Module is surveyed, is connected with the decoder module；Mainboard, it is connected with the detecting module；First randomizer, with the mainboard
Connection；Second randomizer, it is connected with the mainboard；First data-interface, it is connected with the mainboard；Second data connect
Mouthful, it is connected with the mainboard；Generation module, it is connected with the mainboard, for preparing single-photon source.In the present embodiment, the solution
Code module is interference ring；The detecting module is single-photon detector, and is double end single-photon detector, and receiving terminal is gathered around simultaneously
There are two singl e photon detection modules, one is used to detect the key information that transmitting terminal transmits, and another detector is dry for detecting
The trick state information related to, and then ensure the security of cipher key delivery.With the quantum key distribution system for inveigling state, can avoid
Listener-in eavesdrops, and has more preferable security.The mainboard is the FPGA mainboards with LINUX operating systems, facilitates each mould
The installation connection of block.First randomizer is quantum random number generator, for what is received with the detecting module
Quantum information is compared.Second randomizer is quantum random number generator, is sent out for preparing for single-photon source
The information sent.First data-interface is SFP interfaces, and the transmitting terminal for receiving another quantum key distribution device is transmitted across
The data come.Second data-interface is SFP interfaces, for sending number to the receiving terminal of another quantum key distribution device
According to.The generation module is to prepare the sub-circuit board of single-photon source, convenient to be connected with mainboard installation.
As shown in Fig. 2 quantum key distribution all-in-one of the present invention at work, integrally comprises the following steps in general：
A. the coding information received is decoded；
B. quantum key is generated by the information of the decoding；
C. the information that the first classical channel transmits is received；
D. quantum key is prepared concurrently to send；
E. the second classical channel transmission information is passed through.
Specifically, in the present embodiment, the quantum key distribution all-in-one receives the information that other transmitting terminals are sent, institute
Stating the information sent includes the coding information that quantum channel sends and the other information that classical channel is sent.The quantum key point
The coding information that the interference ring decoding of hair all-in-one receives；The decoded coding information turns through single-photon detector
Quantum key information is changed to, corresponding quantum key information is obtained using the double end single-photon detector and sends FPGA master to
Caused random number is sent to the FPGA mainboards by plate, first randomizer, and the FPGA mainboards pass through acquisition
Random number be compared with the quantum information, generate corresponding quantum key.The all-in-one is classical by described first
Channel receives the other information, and the other information is passed to the all-in-one by first data-interface, and described first
Data-interface is SFP interfaces, and realizes the mutual comparison of classical information, completes the bit error rate and judges, eventually through comparison information shape
Into safe key.
The FPGA mainboards obtain quantum random number caused by second randomizer, random by described second
Random number caused by number generator prepares quantum key, and it is close by the sub-circuit board for preparing single-photon source to be encoded into quantum
Key information is simultaneously sent to another receiving terminal, under BB84 agreements, can set up an interference ring, completes to compile by the interference ring
Code, another receiving terminal is sent to finally by the sub-circuit board.The all-in-one passes through second data-interface and described
The data message in addition to quantum key information that second classical channel externally sends the all-in-one sends another receiving terminal to.
By above-mentioned steps, the quantum key distribution all-in-one realizes that sending quantum key to another transmitting terminal connects
Receive, while can be to another receiving terminal quantum key, the problem of greatling save cost, while avoid redundancy from connecting up.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (7)
1. a kind of quantum key distribution all-in-one machine realization method, it is characterised in that including at least following steps：
Decode the coding information received；
Quantum key is generated by the information of the decoding；
Receive the information that the first classical channel transmits；
Quantum key is prepared concurrently to send；
Pass through the second classical channel transmission information.
2. quantum key distribution all-in-one machine realization method according to claim 1, it is characterised in that described to decode what is received
Coding information is completed by interference ring.
3. quantum key distribution all-in-one machine realization method according to claim 1, it is characterised in that described to pass through the solution
The information generation quantum key of code includes：Corresponding quantum key information is obtained using single-photon detector and sends FPGA master to
Caused random number is sent to the FPGA mainboards by plate, the first randomizer, the FPGA mainboards by acquisition with
Machine number is compared with the quantum key information.
4. quantum key distribution all-in-one machine realization method according to claim 1, it is characterised in that described to receive the first warp
The information that allusion quotation channel transmits includes：First data-interface is set, and first data-interface is SFP interfaces, passes through described first
Data-interface receives data message.
5. quantum key distribution all-in-one machine realization method according to claim 1, it is characterised in that described to prepare quantum close
Key, which is sent, to be included：The FPGA mainboards prepare quantum key by random number caused by the second randomizer, and pass through system
The sub-circuit board of standby single-photon source sends the quantum key.
6. quantum key distribution all-in-one machine realization method according to claim 1, it is characterised in that first random number
Generator is quantum random number generator, for compared with the signal that is received with the detecting module.
7. quantum key distribution all-in-one machine realization method according to claim 1, it is characterised in that described to pass through the second warp
Allusion quotation channel transmission information includes：Second data-interface is set, and second data-interface is SFP interfaces, is counted by described second
Data message is sent according to interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711353168.0A CN107786334A (en) | 2017-12-15 | 2017-12-15 | A kind of quantum key distribution all-in-one machine realization method |
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| CN201711353168.0A CN107786334A (en) | 2017-12-15 | 2017-12-15 | A kind of quantum key distribution all-in-one machine realization method |
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| CN107786334A true CN107786334A (en) | 2018-03-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650090A (en) * | 2018-07-17 | 2018-10-12 | 江苏亨通问天量子信息研究院有限公司 | Quantum secure facsimile machine and quantum secure fasystem |
| CN110113161A (en) * | 2019-05-08 | 2019-08-09 | 华南师范大学 | A kind of production method and device for inveigling the light pulse of state quantum |
| CN111162905A (en) * | 2020-03-10 | 2020-05-15 | 中国科学技术大学 | Quantum key distribution system and decoding method thereof |
-
2017
- 2017-12-15 CN CN201711353168.0A patent/CN107786334A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650090A (en) * | 2018-07-17 | 2018-10-12 | 江苏亨通问天量子信息研究院有限公司 | Quantum secure facsimile machine and quantum secure fasystem |
| CN110113161A (en) * | 2019-05-08 | 2019-08-09 | 华南师范大学 | A kind of production method and device for inveigling the light pulse of state quantum |
| CN111162905A (en) * | 2020-03-10 | 2020-05-15 | 中国科学技术大学 | Quantum key distribution system and decoding method thereof |
| CN111162905B (en) * | 2020-03-10 | 2021-03-09 | 中国科学技术大学 | Quantum key distribution system and decoding method thereof |
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Application publication date: 20180309 |
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| WW01 | Invention patent application withdrawn after publication |