CN116266787A - Transmitting terminal equipment for quantum key distribution with simplified structure - Google Patents

Transmitting terminal equipment for quantum key distribution with simplified structure Download PDF

Info

Publication number
CN116266787A
CN116266787A CN202111566290.2A CN202111566290A CN116266787A CN 116266787 A CN116266787 A CN 116266787A CN 202111566290 A CN202111566290 A CN 202111566290A CN 116266787 A CN116266787 A CN 116266787A
Authority
CN
China
Prior art keywords
signal
quantum
optical
synchronous
interface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111566290.2A
Other languages
Chinese (zh)
Inventor
唐世彪
高松
栗帅
许穆岚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quantumctek Co Ltd
Original Assignee
Quantumctek Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Quantumctek Co Ltd filed Critical Quantumctek Co Ltd
Priority to CN202111566290.2A priority Critical patent/CN116266787A/en
Publication of CN116266787A publication Critical patent/CN116266787A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/70—Photonic quantum communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0075—Arrangements for synchronising receiver with transmitter with photonic or optical means
    • 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
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • 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
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Communication System (AREA)

Abstract

The invention discloses a transmitting terminal device for quantum key distribution, wherein, by setting a classical negotiation unit and a classical quantum wavelength division multiplexing module and optimally designing a control unit, a data channel required by the transmitting terminal device can be realized by only one universal interface and one optical interface, the configuration of peripheral interfaces of the device is greatly simplified, and the size of the transmitting terminal device is further reduced. Meanwhile, high data communication rate and strong expansibility can be provided for the outside, the transmitting end equipment is allowed to be conveniently fused with other classical equipment, and the applicability of the transmitting end equipment is enhanced.

Description

Transmitting terminal equipment for quantum key distribution with simplified structure
Technical Field
The invention relates to the field of quantum secret communication, in particular to a transmitting end device for quantum key distribution, which has a simplified structure.
Background
In order to realize the quantum key distribution process, the transmitting end device needs to communicate various signals such as quantum optical signals, synchronous optical signals, negotiation signals, quantum keys, key management information, device state information and the like. For this purpose, various hardware interfaces are usually provided in the existing transmitting-end apparatuses to serve as corresponding data interfaces. As shown in fig. 1, there are five hardware interfaces in a typical transmitting end device in the prior art, namely, a key output interface for outputting a quantum key, a key management interface for transceiving key management data, a key negotiation interface for transceiving key negotiation data, a network management interface for transceiving network management data, and an optical interface for quantum optical signals/synchronous optical signals. The complex hardware interface structure not only requires larger equipment size, but also is difficult to meet the adaptation requirement of different types of classical equipment on the hardware interface, so that the existing sending end equipment has defects in portability and suitability.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention discloses a transmitting end device for quantum key distribution, wherein by setting a classical negotiation unit, a classical quantum wavelength division multiplexing module, and an optimal design of a control unit, a data channel required by the transmitting end device can be realized only by a universal interface and an optical interface, the configuration of peripheral interfaces of the device is greatly simplified, and the size of the transmitting end device is further reduced. Meanwhile, high data communication rate and strong expansibility can be provided for the outside, the transmitting end equipment is allowed to be conveniently fused with other classical equipment, and the applicability of the transmitting end equipment is enhanced.
Specifically, the transmitting end device for quantum key distribution comprises a transmitting end module, a classical quantum wavelength division multiplexing module and a signal interface;
the signal interface only comprises a universal interface for communicating digital signals with the outside and an optical interface for communicating optical signals with the outside;
the transmitting end module is used for generating and outputting quantum optical signals, synchronous optical signals and negotiation optical signals and negotiating to generate and output quantum keys;
the classical quantum wavelength division multiplexing module is arranged between the transmitting end module and the optical interface and is used for performing wavelength division multiplexing on the quantum optical signals, the synchronous optical signals and the negotiation optical signals.
Further, the sender module is configured to allow different types of data to be formed in the same digital signal, and the different types of data have different protocol frame formats.
The types of data may include quantum keys, key management data, network management data, and/or device state information data, among others.
Further, the transmitting end module comprises a random number generating unit, a quantum optical signal generating unit, a synchronous optical signal generating unit, a classical negotiation unit and a control unit;
the random number generation unit is used for generating random numbers;
the quantum optical signal generation unit is used for generating the quantum optical signal;
the synchronous optical signal generating unit is used for generating the synchronous optical signal;
the control unit is used for performing driving control on the quantum optical signal generation unit and the synchronous optical signal generation unit, negotiating to generate the quantum key and managing the quantum key;
the classical negotiation unit is arranged between the control unit and the classical quantum wavelength division multiplexing module and is used for generating the negotiation optical signal through a photoelectric conversion process under the direct drive of the control unit.
Further, the random number generation unit includes a random number chip; and/or the classical negotiation unit comprises a photoelectric converter.
Still further, the control unit includes a processor and a memory. The processor may be implemented by means of a separate CPU and FPGA, or by means of a processor with integrated driving functions.
Further, the quantum optical signal generating unit comprises a signal optical driver, a signal light source and an optical chip;
the signal light driver is used for outputting a signal light driving signal to the signal light source based on the control of the control unit;
the signal light source is used for generating signal light according to the signal light driving signal;
the optical chip is used for encoding the signal light and generating the quantum light signal.
Still further, the synchronous optical signal generating unit includes a synchronous optical driver and a synchronous optical source;
the synchronous optical driver is used for outputting a synchronous optical driving signal to the synchronous light source based on the control of the control unit;
the synchronous light source is used for generating the synchronous light signal according to the synchronous light driving signal.
Preferably, the transmitting-end device may have a two-dimensional planar size of not more than 120mm×220mm.
Preferably, the classical-quantity wavelet-division multiplexing module comprises a wavelength division multiplexer.
Preferably, the universal interface is a PCIE interface.
Preferably, the optical interface is an LC/UPC interface.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a typical structure of a transmitting-end apparatus of the related art;
fig. 2 shows an exemplary embodiment of a sender device for quantum key distribution according to the present invention.
Detailed Description
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are provided by way of illustration to fully convey the spirit of the invention to those skilled in the art to which the invention pertains. Thus, the present invention is not limited to the embodiments disclosed herein.
Fig. 2 shows an exemplary embodiment of a sender device for quantum key distribution according to the present invention.
The transmitting end equipment of the invention can comprise a transmitting end module and a classical quantum wavelet division multiplexing module.
The sending end module is used for generating and outputting a quantum optical signal, a synchronous optical signal and a negotiation optical signal, and generating and outputting a quantum key through negotiation.
The classical quantum wavelength division multiplexing module is in optical path connection with the transmitting end module and is used for performing wavelength division multiplexing on the quantum optical signal, the synchronous optical signal and the negotiation optical signal output by the transmitting end module so as to allow the quantum optical signal, the synchronous optical signal and the negotiation optical signal to share one optical transmission channel (such as a single optical fiber channel).
As a preferred example, the classical quantum wavelet division multiplexing module may comprise a wavelength division multiplexer.
As shown in fig. 2, the transmitting-end module includes a random number generating unit, a quantum optical signal generating unit, a synchronous optical signal generating unit, a classical negotiation unit, and a control unit.
The random number generation unit is used for generating random numbers, such as quantum random numbers.
As an example, the random number generating unit may include a random number chip.
The control unit generates control signals for controlling the quantum optical signal generating unit and the synchronous optical signal generating unit to generate the quantum optical signal and the synchronous optical signal, directly drives the classical negotiation unit to generate the negotiation optical signal, generates the quantum key through negotiation (performing basis vector comparison, error correction, privacy amplification and the like), and manages the quantum key.
As an example, the control unit may generate a control signal for controlling the quantum light signal generation unit to generate the quantum light signal based on the random number.
As an example, the control unit may comprise a processor and a memory, as shown in fig. 2.
In the present invention, the processor may be implemented by a separate CPU and FPGA, or may be implemented by a processor (e.g., ZYNQ) having an integrated driving function.
The memory may be used for caching of data.
The quantum optical signal generating unit is used for generating a quantum optical signal and can comprise a signal optical driver, a signal light source and an optical chip.
The signal light driver is used for transmitting a signal light driving signal to the signal light source according to the control signal of the control unit.
The signal light source is used for generating signal light according to the signal light driving signal. As an example, the signal light source may be a laser, such as a signal light laser.
The optical chip is used for encoding the signal light to generate a quantum light signal, and the quantum light signal is sent to the classical quantum wavelength division multiplexing module.
The synchronous optical signal generating unit is used for generating a synchronous optical signal and can comprise a synchronous optical driver and a synchronous light source.
The synchronous optical driver is used for sending a synchronous optical driving signal to the synchronous light source according to the control signal of the control unit.
The synchronous light source is used for generating a synchronous light signal according to the synchronous light driving signal, and the synchronous light signal is sent to the classical quantum wavelet division multiplexing module. By way of example, the synchronous light source may be a laser, such as a synchronous light laser.
The classical negotiation unit is arranged between the control unit and the classical quantum wavelength division multiplexing module and is used for generating a negotiation optical signal by means of a photoelectric conversion process, for example, by being directly driven by a CPU in the control unit.
As an example, the classical negotiation unit may comprise a photoelectric converter to generate the negotiation optical signal based on a direct drive of the CPU.
Therefore, in the transmitting end device of the invention, by setting the classical quantum wavelet multiplexing module, multiple different optical signals in the transmitting end device are allowed to multiplex the same optical path to realize signal transmission, meanwhile, the control unit is directly driven to generate the negotiation optical signals to bear negotiation data for the quantum key distribution process by means of simple photoelectric conversion effect through the classical negotiation unit, therefore, an optical interface can be set on the transmitting end device to be connected with the classical quantum wavelet multiplexing module, thus meeting the communication requirements of optical signals such as quantum optical signals, synchronous optical signals and negotiation signals, and the like, thereby allowing the external communication interface of the device to be reduced to avoid the equipment space required by setting the interface, and simultaneously, the equipment internal space occupied by the optical paths required by connecting various optical signals such as quantum optical signals and synchronous optical signals with the optical interfaces thereof respectively can be effectively reduced, and finally, the transmitting end device is allowed to be realized in a reduced size, and the size miniaturization and the high integration degree can be realized. In addition, the transmitting end equipment only needs a single fiber channel, so that fiber resources can be greatly saved, and the transmitting end equipment is more convenient to use.
In addition, the control unit can also form various types of data generated in the running process of the device on the same digital signal, so as to allow a universal interface to be arranged on the sending end device to meet the communication requirements of various types of digital data, thereby allowing external communication interfaces (such as a key output interface, a key management interface, a network management interface and the like) of the device to be reduced, and avoiding the device space required by the arrangement of the interfaces. Meanwhile, by setting a single universal interface as a unified interface of the digital data of the device, the miniaturized transmitting end device is also allowed to be conveniently in butt joint with classical devices so as to form integrated machine equipment with quantum key distribution and encryption and decryption functions.
In particular, in the present invention, the control unit may define corresponding protocol frame formats for different types of data, so that the different types of data are sent to the host device via the same universal interface by means of the same digital signal. After receiving the digital signal, the host device can perform frame decoding through different protocol frame formats, separate different types of data from the same digital signal, and develop corresponding responses.
As a preferred example, the generic interface may be a PCIE interface, thereby allowing the sender device to quickly interface with various classical devices in a flexible way. The universal interface may be used, but is not limited to, for communication of digital signals related to quantum keys, key management data, network management data, and various device status data (e.g., temperature, anomaly information, etc.).
As a preferred example, the optical interface may be an LC/UPC interface, thereby allowing the sender device to quickly connect to an external fibre channel to enable quantum, synchronous and negotiation optical signals to multiplex the fibre channel.
Therefore, compared with the prior art that a plurality of optical and data interfaces (such as a key negotiation interface, a quantum optical signal/synchronous optical interface, a key output interface, a key management interface, a network management interface and the like) are generally required to be configured for the transmitting end device, the transmitting end device provided by the invention can realize a data channel required by the transmitting end device by arranging a classical negotiation unit, a classical quantum wavelength division multiplexing module and an optimal design of a control unit, so that the configuration of the peripheral interface of the device is greatly simplified, the size of the transmitting end device is further reduced, and for example, the two-dimensional plane size (length/width) of the transmitting end device can be further reduced to 120mm x 220mm. Meanwhile, high data communication rate and strong expansibility can be provided for the outside, the transmitting end equipment is allowed to be conveniently fused with other classical equipment, and the applicability of the transmitting end equipment is enhanced.
While the invention has been described in connection with the specific embodiments illustrated in the drawings, it will be readily appreciated by those skilled in the art that the above embodiments are merely illustrative of the principles of the invention, which are not intended to limit the scope of the invention, and various combinations, modifications and equivalents of the above embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (10)

1. A transmitting end device for quantum key distribution comprises a transmitting end module, a classical quantum wavelength division multiplexing module and a signal interface;
the signal interface only comprises a universal interface for communicating digital signals with the outside and an optical interface for communicating optical signals with the outside;
the transmitting end module is used for generating and outputting quantum optical signals, synchronous optical signals and negotiation optical signals and negotiating to generate and output quantum keys;
the classical quantum wavelength division multiplexing module is arranged between the transmitting end module and the optical interface and is used for performing wavelength division multiplexing on the quantum optical signals, the synchronous optical signals and the negotiation optical signals.
2. The sender device of claim 1, wherein the sender module is arranged to allow different types of data to be formed in the same digital signal, and the different types of data have different protocol frame formats.
3. The sender device of claim 2, wherein the data comprises quantum keys, key management data, network management data, and/or device state information data.
4. The transmitting-end apparatus according to claim 1, wherein the transmitting-end module includes a random number generation unit, a quantum optical signal generation unit, a synchronous optical signal generation unit, a classical negotiation unit, and a control unit;
the random number generation unit is used for generating random numbers;
the quantum optical signal generation unit is used for generating the quantum optical signal;
the synchronous optical signal generating unit is used for generating the synchronous optical signal;
the control unit is used for performing driving control on the quantum optical signal generation unit and the synchronous optical signal generation unit, negotiating to generate the quantum key and managing the quantum key;
the classical negotiation unit is arranged between the control unit and the classical quantum wavelength division multiplexing module and is used for generating the negotiation optical signal through a photoelectric conversion process under the direct drive of the control unit.
5. The transmitting-end apparatus of claim 4, wherein the random number generation unit includes a random number chip; and/or the classical negotiation unit comprises a photoelectric converter.
6. The transmitting-end apparatus of claim 4, wherein the control unit comprises a processor and a memory.
7. The transmitting-end apparatus of claim 6, wherein the processor is implemented by means of a separate CPU and FPGA, or by means of a processor with integrated driving functions.
8. The transmitting-end apparatus of claim 4, wherein the quantum optical signal generating unit includes a signal optical driver, a signal light source, and an optical chip;
the signal light driver is used for outputting a signal light driving signal to the signal light source based on the control of the control unit;
the signal light source is used for generating signal light according to the signal light driving signal;
the optical chip is used for encoding the signal light and generating the quantum light signal.
9. The transmitting-end apparatus of claim 4, wherein the synchronous optical signal generating unit includes a synchronous optical driver and a synchronous optical source;
the synchronous optical driver is used for outputting a synchronous optical driving signal to the synchronous light source based on the control of the control unit;
the synchronous light source is used for generating the synchronous light signal according to the synchronous light driving signal.
10. The transmitting end device of any of claims 1-9, having a two-dimensional planar dimension of no more than 120mm x 220 mm; and/or the number of the groups of groups,
the classical quantum wavelet division multiplexing module comprises a wavelength division multiplexer; and/or the number of the groups of groups,
the universal interface is a PCIE interface; and/or the number of the groups of groups,
the optical interface is an LC/UPC interface.
CN202111566290.2A 2021-12-17 2021-12-17 Transmitting terminal equipment for quantum key distribution with simplified structure Pending CN116266787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111566290.2A CN116266787A (en) 2021-12-17 2021-12-17 Transmitting terminal equipment for quantum key distribution with simplified structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111566290.2A CN116266787A (en) 2021-12-17 2021-12-17 Transmitting terminal equipment for quantum key distribution with simplified structure

Publications (1)

Publication Number Publication Date
CN116266787A true CN116266787A (en) 2023-06-20

Family

ID=86744075

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111566290.2A Pending CN116266787A (en) 2021-12-17 2021-12-17 Transmitting terminal equipment for quantum key distribution with simplified structure

Country Status (1)

Country Link
CN (1) CN116266787A (en)

Similar Documents

Publication Publication Date Title
US10009108B2 (en) Coherent and pulse amplitude modulation in a pluggable optical transceiver
CN101346920B (en) Open fiber control and loss of light propagation in time division multiplexed inter-system channel link
TWI301708B (en) Optical fiber signal converter
US8161332B2 (en) Pluggable transceiver module with enhanced circuitry
TWI290244B (en) A low latency optical memory bus
WO2015095993A1 (en) Method and apparatus for sending and receiving optical differential signal, and system
US11757246B2 (en) PSE device and powered device of optical power supply system, and optical power supply system
US20160020856A1 (en) Optical engines and optical cable assemblies capable of low-speed and high-speed optical communication
JP2002208896A (en) Lsi system using semiconductor device
US6073855A (en) Bypass interface for PCMCIA cards
CN116266787A (en) Transmitting terminal equipment for quantum key distribution with simplified structure
JP2023162310A (en) photoelectric adapter
CN217037196U (en) Miniaturized QKD equipment
WO2023284540A1 (en) Single-fiber bidirectional optical module, high-baud-rate signal transmission method, and 5g fronthaul network
MXPA06000776A (en) Core network system and optical transmission equipment.
US8902488B2 (en) System architecture for an optical switch using wavelength, fiber and polarizaton addressing
CN217037195U (en) Miniaturized quantum key distribution receiving terminal equipment
US8369710B2 (en) Data processing network having an optical network interface
JP7399673B2 (en) Fiber optic power supply system
CN116266786A (en) Quantum key distribution receiving terminal equipment with simplified structure
JP3889735B2 (en) Power supply device and power supply method for medium converter for optical communication
WO2019242590A1 (en) Optical network apparatus and optical module
WO2023109630A1 (en) Fusion method for qkd device and classic device, and all-in-one device
KR20030061936A (en) Multimedia Multiplexing Transmition System
CN221929876U (en) Communication device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination