CN114499841A - Quantum communication network QKD equipment debugging system and method - Google Patents
Quantum communication network QKD equipment debugging system and method Download PDFInfo
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- CN114499841A CN114499841A CN202111673533.2A CN202111673533A CN114499841A CN 114499841 A CN114499841 A CN 114499841A CN 202111673533 A CN202111673533 A CN 202111673533A CN 114499841 A CN114499841 A CN 114499841A
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- 238000012795 verification Methods 0.000 claims abstract description 76
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- 230000003287 optical effect Effects 0.000 claims abstract description 44
- 238000012937 correction Methods 0.000 claims abstract description 33
- 230000002159 abnormal effect Effects 0.000 claims abstract description 26
- 238000007689 inspection Methods 0.000 claims abstract description 19
- 230000005856 abnormality Effects 0.000 claims abstract description 11
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/362—Software debugging
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- 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
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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
- H04L9/0858—Details about key distillation or coding, e.g. reconciliation, error correction, privacy amplification, polarisation coding or phase coding
Abstract
The invention discloses a quantum communication network QKD equipment debugging system and method, which carry out communication verification of a classical channel on matched Alice ends and Bob ends by debugging an upper computer; after the communication verification of the classical channel is successful, the debugging upper computer sequentially performs synchronous optical verification, signal optical delay scanning inspection and synchronous optical and signal optical correction on the end of the Alice side to the end of the Bob; after the synchronous light and the signal are corrected successfully, the running states of the Alice terminal and the Bob terminal are saved in a log file form by the debugging upper computer; and when the Alice terminal or the Bob terminal is abnormal, the debugging machine-on position analyzes the abnormality and provides a solution. According to the quantum communication network QKD equipment debugging method disclosed by the invention, the debugging upper computer can be used for remotely debugging a plurality of QKD equipment through the Ethernet, recording the operation condition of the QKD equipment, conveniently checking and solving the abnormal problem, greatly improving the joint debugging efficiency of the QKD equipment, ensuring the subsequent operation of the system and being capable of popularizing quantum communication and quantum network scale application.
Description
Technical Field
The invention relates to the technical field of quantum communication and quantum networks, in particular to a quantum communication network QKD equipment debugging system and method.
Background
At present, in the technical field of quantum communication, most of key management system devices still use traditional serial ports for interaction, which is not beneficial to real-time communication between the key management system devices, namely in the field of key management system software, a corresponding joint debugging method is not available at present to perform function test on the whole system software before operation, and the problems of software operation interruption and data loss may occur in actual operation, so that the system is easy to have bugs and low in operation efficiency. When a key management system, namely, a QKD device, has a problem, the running device is often manually interrupted and then the device can be checked, which consumes manpower and material resources. The problem of joint debugging test and exception handling between QKD devices is urgently needed to be solved.
Therefore, there is a need to improve the deficiencies of the prior art in quantum communication and quantum networks, and to provide a method for jointly adjusting communication between QKD devices and handling the problem of anomalies.
Disclosure of Invention
In order to solve the technical problem, the invention provides a quantum communication network QKD equipment debugging method,
the method is realized by the following technical scheme:
the utility model provides a quantum communication network QKD equipment debugging system, includes Alice end, Bob end and debugging host computer, be provided with matching module, communication verification, synchronous light check module, signal light time delay scanning inspection module, synchronous correction module, storage module and unusual analysis module in the debugging host computer, wherein:
the matching module is used for establishing connection matching between an Alice end and the Bob end;
the communication verification module is used for performing communication verification of a classical channel on the matched Alice end and the matched Bob end;
the synchronous optical verification module is used for carrying out synchronous optical verification operation on quantum channels of an Alice end and the Bob end;
the signal light delay scanning inspection module is used for carrying out signal light delay scanning inspection operation on quantum channels of an Alice end and the Bob end;
the synchronous correction module is used for synchronous correction operation of quantum channel synchronous light and signal light of an Alice end and a Bob end;
the storage module is used for storing the running states of the Alice terminal and the Bob terminal in a log file form;
the anomaly analysis module is used for analyzing the abnormal running states of the Alice terminal and the Bob terminal and providing a solution.
A quantum communication network QKD equipment debugging method applies an Alice end, a Bob end and a debugging upper computer, and the method comprises the following steps:
step 1: the Alice end and the Bob end are matched;
step 2: the debugging upper computer carries out communication verification of a classical channel on the matched Alice end and the matched Bob end;
and step 3: after the communication verification of the classical channel is successful, the debugging upper computer sequentially performs synchronous optical verification, signal optical delay scanning inspection and synchronous optical and signal optical synchronous correction on the end of the Alice side and the end of the Bob;
and 4, step 4: when the synchronous correction of the synchronous light and the signal is successful, the debugging upper computer saves the running states of the Alice terminal and the Bob terminal in a log file form;
and 5: and when the Alice terminal or the Bob terminal is abnormal, the debugging machine-loading position analyzes the abnormality and provides a solution.
Further, the Alice end and the Bob end communicate with each other through a classical channel or a quantum channel; and the debugging upper computer is communicated with the Alice end and the Bob end through the Ethernet respectively.
Further, the matching between the Alice terminal and the Bob terminal in step 1 includes the following steps:
step 1-1: the Alice terminal encrypts a piece of information by using a local private key and sends the encrypted information to a plurality of Bob terminals;
step 1-2: the method comprises the following steps that a Bob end decrypts according to a public key of a locally stored Alice end, and if decryption is successful, the Alice end and the Bob end are connected and matched;
and if the decryption is unsuccessful, the Alice end and the Bob end are not connected and matched.
Further, the step of communication verification of the classical channel in step 2 is as follows:
step 2-1: the debugging upper computer issues a classic network verification command to an Alice terminal;
step 2-2: after receiving the classical network verification command, the Alice sends a verification data packet to the Bob end through a classical channel;
step 2-3: the Bob end receives the verification data packet, generates a feedback response data packet and sends the feedback response data packet to Alice through a classical channel;
step 2-4: if the Alice end receives the feedback response data packet of the Bob end, the classical channel verification is judged to be successful;
and if the Alice end does not receive the feedback response data packet of the Bob end, returning to the step 2-1.
Further, the step of step 3 is as follows:
step 3-1: when the classical channel verification in the step 2 is successful, the debugging upper computer issues a synchronous optical verification command to an Alice terminal for synchronous optical verification;
if the verification is successful, skipping to the step 3-2, and if the verification is unsuccessful, repeating the step 3-1;
3-2, when the synchronous optical inspection in the step 3-1 is successful, the debugging upper computer issues a delay scanning command to an Alice terminal to carry out signal optical delay scanning and verification;
if the verification is successful, skipping to the step 3-3, and if the verification is unsuccessful, repeating the step 3-2;
step 3-3: when the signal light delay scanning verification in the step 3-2 is successful, the debugging upper computer issues a synchronous correction command to an Alice terminal to perform synchronous correction of the synchronous light and the signal light;
if the correction is successful, jumping to the step 4; and if the correction is unsuccessful, repeating the step 3-3.
Further, the log file storage period in the step 4 is 10-14 hours.
Further, the log file in step 4 includes an operation state, a connection record, a key distribution record and an exception record.
Further, the exception record comprises an Alice-side or Bob-side key distribution exception and a data cache exception.
Further, the step of analyzing the abnormality in step 5 is:
step 5-1: when the Alice terminal or the Bob terminal is abnormal, the debugging upper computer searches an abnormal record for a log file of the Alice terminal or the Bob terminal;
step 5-2: when the abnormal record indicates that the secret key distribution of the Alice terminal or the Bob terminal is abnormal, the debugging upper computer sends a command of stopping issuing the secret key to the Alice terminal or the Bob terminal;
and when the abnormal record is data cache abnormality, the debugging upper computer displays the data cache abnormality record and the solution on a display screen of the debugging upper computer.
Further, the solution in the step 5-2 is to reset or restart the debugging upper computer, the Alice terminal and the Bob terminal.
The invention has the beneficial effects that:
according to the quantum communication network QKD equipment debugging method disclosed by the invention, the debugging upper computer can be used for remotely debugging a plurality of QKD equipment through the Ethernet, the running condition of the QKD equipment is recorded, the abnormal problem is conveniently checked and solved, the joint debugging efficiency of the QKD equipment is greatly improved, the subsequent running of the system is ensured, and the quantum communication and the scale application of the quantum network can be popularized.
Drawings
FIG. 1 is a functional block diagram of a QKD device debugging system of a quantum communication network of the present invention;
FIG. 2 is a flowchart illustrating the steps of a QKD device debugging method according to the present invention;
FIG. 3 is a flow chart of classical channel communication verification of a quantum communication network QKD device debugging method of the present invention;
FIG. 4 is a synchronous optical verification flowchart of a quantum communication network QKD device debugging method of the present invention;
FIG. 5 is a signal light delay scanning inspection flowchart of a quantum communication network QKD device debugging method of the present invention;
fig. 6 is a flowchart illustrating the correction of the synchronization light and the signal light in the method for adjusting the quantum communication network QKD device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, a quantum communication network QKD device debugging system includes an Alice end, a Bob end and a debugging upper computer, where the debugging upper computer is provided with a matching module, a communication verification module, a synchronous optical verification module, a signal optical delay scanning inspection module, a synchronous correction module, a storage module, and an anomaly analysis module, where:
the matching module is used for establishing connection matching between an Alice end and the Bob end;
the communication verification module is used for performing communication verification of a classical channel on the matched Alice end and the matched Bob end;
the synchronous optical verification module is used for carrying out synchronous optical verification operation on quantum channels of an Alice end and the Bob end;
the signal light delay scanning inspection module is used for carrying out signal light delay scanning inspection operation on quantum channels of an Alice end and the Bob end;
the synchronous correction module is used for synchronous correction operation of quantum channel synchronous light and signal light of an Alice end and a Bob end;
the storage module is used for storing the running states of the Alice terminal and the Bob terminal in a log file form;
the anomaly analysis module is used for analyzing the abnormal running states of the Alice terminal and the Bob terminal and providing a solution.
The function implementation manner of each module of the system is consistent with the technical scheme adopted by the corresponding part of the quantum communication network QKD equipment debugging method, and the detailed description is omitted here.
As shown in fig. 2-6, a method for debugging a quantum communication network QKD device employs the above-mentioned quantum communication network QKD device debugging system, in which an Alice end is simplex-sending type, integrates a quantum signal transmitter, only has a function of sending optical quantum signals, and is used in cooperation with a Bob end device to realize unidirectional quantum key distribution; bob is of a simplex receiving type, integrates a single-photon detector, only has the function of receiving optical quantum signals, is matched with Alice terminal equipment for use, and can realize unidirectional quantum key distribution.
Wherein, Alice and Bob can communicate through classical channel and quantum channel; the QKD debugging upper computer can respectively communicate with Alice and Bob through the Ethernet, so that the QKD equipment (Alice end and Bob end) can be controlled in operation flow, monitored in operation state and recorded in system abnormity.
The method for debugging the QKD device comprises the following steps:
step 1: the Alice end and the Bob end are matched;
wherein, the matching steps are as follows:
step 1-1: the Alice terminal encrypts a piece of information by using a local private key and sends the encrypted information to the Bob terminal;
step 1-2: the Bob end decrypts according to the public key of the locally stored Alice end, and if decryption is successful, matching connection between the Alice end and the Bob end is successful;
and if the decryption is unsuccessful, the matching connection between the Alice terminal and the Bob terminal fails, and the connection is not established.
Further, step 2: the debugging upper computer carries out communication verification of a classical channel on the matched Alice end and the matched Bob end;
further, as shown in fig. 2, the step of communication verification of the classical channel in step 2 is as follows:
step 2-1: the debugging upper computer issues a classic network verification command to an Alice terminal;
step 2-2: after receiving the classical network verification command, the Alice sends a verification data packet to the Bob end through a classical channel;
step 2-3: the Bob end receives the verification data packet and feeds a response data packet back to the Alice end through a classical channel;
step 2-4: if the Alice end receives a response data packet returned by the Bob end, the classical channel verification is judged to be successful;
if the Alice end does not receive the response data packet fed back by the Bob end, returning to the step 2-1;
further, step 3: after the communication verification of the classical channel is successful, the debugging upper computer sequentially performs synchronous optical verification, signal optical delay scanning inspection and synchronous optical and signal optical correction on the end of the Alice side to the end of the Bob;
further, the step of step 3 is as follows:
step 3-1: when the classical channel verification in the step 2 is successful, the debugging upper computer issues a synchronous optical verification command to an Alice terminal for synchronous optical verification;
as shown in fig. 4, the steps of the synchronous optical verification process are as follows:
the debugging upper computer issues a synchronous optical verification command to an Alice terminal;
after receiving the synchronous light check command, the Alice end generates synchronous light and sends the synchronous light to the Bob end through a quantum channel;
when the Bob end receives the synchronous light, the detection result is returned to the Alice end in a message form;
if the Bob end does not receive the synchronous light, no message is replied;
if the Alice end does not receive the detection report message, the debugging upper computer re-issues a synchronous optical verification command to the Alice end;
if the Alice end receives the detection report message, the synchronous optical verification is successful and the signal optical delay scanning inspection is started.
When the synchronous optical inspection in the step 3-1 is successful, the debugging upper computer issues a delay scanning command to an Alice terminal to carry out signal optical delay scanning verification;
as shown in fig. 5, the signal light delay scanning inspection includes the following steps:
the debugging upper computer issues a delay scanning verification command to an Alice end and a Bob end; the aim is to inform the Alice end of sequentially sending signal light and informing the Bob end of starting the detector to count the value for detection;
the Alice end sequentially sends signal light to the Bob end through the quantum channel;
the Bob end adjusts the time delay of the gating signal according to the detected signal light until the counting value of the detector reaches the number of the signal lights sent by the Alice end, and then sends an adjustment success message to the Alice end;
if the Alice module end does not receive the successful adjustment message, the debugging upper computer re-issues a delayed scanning verification command to the Alice end and the Bob end;
and if the Alice module receives the message of successful adjustment, the signal light is successfully scanned and verified in a time-delay mode, and the synchronous light and the signal light are corrected.
Step 3-3: when the signal light delayed scanning verification in the step 3-2 is successful, the debugging upper computer issues a synchronous correction command to the Alice terminal to perform synchronous correction of the synchronous light and the signal light;
as shown in fig. 6, the step of correcting the synchronization light and the signal light is as follows:
the debugging upper computer issues a synchronous correction command to an Alice end and a Bob end; the aim is to inform the Alice end of sending signal light and synchronous light and inform the Bob end of starting a synchronous light detector and a single-photon detector;
the Alice end sends the signal light and the synchronous light to the Bob end through the quantum channel;
the Bob end calculates the delay difference between the signal light and the synchronous light, stores a correction value and sends the correction value to the Alice end;
and if the Alice end does not receive the correction value, the debugging upper computer re-issues a synchronous correction command to the Alice end and the Bob end.
And if the Alice end receives the correction value, the synchronous light and the signal light are successfully corrected, and the step 4 is started.
And 4, step 4: when the synchronous correction of the synchronous light and the signal light is successful, the debugging upper computer saves the running states of the Alice end and the Bob end in a log file form; the log file includes a running state, a connection record, a key distribution record, and an exception record.
Wherein, the log file saving period in the step 4 is in the range of 10-14 hours, and the preferred value is 12 hours.
And 5: and when the Alice terminal or the Bob terminal is abnormal, the debugging machine-loading position analyzes the abnormality and provides a solution. And the exception record comprises an Alice side or Bob side key distribution exception and a data cache exception. The solution is to manually restart and debug the upper computer, the Alice terminal and the Bob terminal or manually reset and debug the upper computer, the Alice terminal and the Bob terminal.
Further, the step of analyzing the abnormality in step 5 is:
step 5-1: when the Alice terminal or the Bob terminal is abnormal, the debugging upper computer searches an abnormal record for a log file of the Alice terminal or the Bob terminal; according to the log classification, finding a log file for storing abnormal information and reading file information;
step 5-2: when the exception is recorded as the abnormal secret key distribution of the Alice terminal or the Bob terminal, the abnormal secret key distribution can affect the normal operation of the system, and after the debugging upper computer sends a secret key issuing stopping command to the Alice terminal or the Bob terminal, the user restarts the debugging upper computer, the Alice terminal or the Bob terminal;
and when the abnormal record is data cache abnormality, the debugging upper computer displays the data cache abnormality record and the solution on a display screen of the debugging upper computer, and then the user restarts the debugging upper computer, the Alice terminal and the Bob terminal.
The debugging upper computer communicates with a plurality of QKD devices through the Ethernet, can carry out remote debugging in system start earlier stage, can record the operation condition of equipment during the operation of system, conveniently checks the problem and solves the anomaly in time, has ensured the later stage operation of system, and quantum communication network debugging and guarantee operation are used in the scale.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a quantum communication network QKD equipment debugging system which characterized in that, includes Alice end, Bob end and debugging host computer, be provided with matching module, communication verification, synchronous light check module, signal light time delay scanning inspection module, synchronous correction module, storage module and unusual analysis module in the debugging host computer, wherein:
the matching module is used for establishing connection matching between an Alice end and the Bob end;
the communication verification module is used for performing communication verification of a classical channel on the matched Alice end and the matched Bob end;
the synchronous optical verification module is used for carrying out synchronous optical verification operation on quantum channels of an Alice end and the Bob end;
the signal light delay scanning inspection module is used for carrying out signal light delay scanning inspection operation on quantum channels of an Alice end and the Bob end;
the synchronous correction module is used for synchronous correction operation of quantum channel synchronous light and signal light of an Alice end and a Bob end;
the storage module is used for storing the running states of the Alice terminal and the Bob terminal in a log file form;
the anomaly analysis module is used for analyzing the abnormal running states of the Alice terminal and the Bob terminal and providing a solution.
2. A quantum communication network QKD device commissioning method, in which the quantum communication network QKD device commissioning system according to claim 1 is applied, said method comprising the steps of:
step 1: the Alice end and the Bob end are matched;
step 2: the debugging upper computer carries out communication verification of a classical channel on the matched Alice end and the matched Bob end;
and step 3: after the communication verification of the classical channel is successful, the debugging upper computer sequentially performs synchronous optical verification, signal optical delay scanning inspection and synchronous optical and signal optical synchronous correction on the quantum channel of the Bob end at the Alice end;
and 4, step 4: when the synchronous correction of the synchronous light and the signal is successful, the debugging upper computer saves the running states of the Alice terminal and the Bob terminal in a log file form;
and 5: and when the Alice terminal or the Bob terminal is abnormal, the debugging machine-loading position analyzes the abnormal running states of the Alice terminal and the Bob terminal and provides a solution.
3. The method for debugging a quantum communication network QKD device according to claim 2, wherein said Alice side and said Bob side communicate with each other via a classical channel or a quantum channel; and the debugging upper computer is communicated with the Alice end and the Bob end through the Ethernet respectively.
4. The method for debugging QKD equipment in a quantum communication network according to claim 2, wherein the matching between Alice and Bob ends in step 1 is as follows:
step 1-1: the Alice terminal encrypts a piece of information by using a local private key and sends the encrypted information to the Bob terminal;
step 1-2: the method comprises the following steps that a Bob end decrypts according to a public key of a locally stored Alice end, and if decryption is successful, the Alice end and the Bob end are connected and matched;
and if the decryption is unsuccessful, the Alice end and the Bob end are not connected and matched.
5. The quantum communication network QKD device commissioning method according to claim 2, wherein the step of communication validation of the classical channel in step 2 is as follows:
step 2-1: the debugging upper computer issues a classic network verification command to an Alice terminal;
step 2-2: after receiving the classical network verification command, the Alice sends a verification data packet to the Bob end through a classical channel;
step 2-3: the Bob end receives the verification data packet, generates a feedback response data packet and sends the feedback response data packet to the Alice end through a classical channel;
step 2-4: if the Alice end receives the feedback response data packet of the Bob end, the classical channel verification is judged to be successful;
and if the Alice end does not receive the feedback response data packet of the Bob end, returning to the step 2-1.
6. The method for debugging a quantum communication network QKD device according to claim 2, characterized in that said step 3 comprises the following steps:
step 3-1: when the classical channel verification in the step 2 is successful, the debugging upper computer issues a synchronous optical verification command to an Alice terminal for synchronous optical verification;
if the verification is successful, skipping to the step 3-2, and if the verification is unsuccessful, repeating the step 3-1;
3-2, when the synchronous optical inspection in the step 3-1 is successful, the debugging upper computer issues a delay scanning command to an Alice terminal to carry out signal optical delay scanning and verification;
if the verification is successful, skipping to the step 3-3, and if the verification is unsuccessful, repeating the step 3-2;
step 3-3: when the signal light delay scanning verification in the step 3-2 is successful, the debugging upper computer issues a synchronous correction command to an Alice terminal to perform synchronous correction of the synchronous light and the signal light;
if the correction is successful, jumping to the step 4; and if the correction is unsuccessful, repeating the step 3-3.
7. The method for debugging a quantum communication network QKD device as claimed in claim 2, wherein the log file saving period in said step 4 is 10-14 hours.
8. The method for debugging a quantum communication network QKD device according to claim 2, wherein the log files in step 4 comprise running state, connection records, key distribution records and exception records;
the exception record comprises an Alice end or Bob end secret key distribution exception and a data cache exception.
9. The method for debugging a quantum communication network QKD device according to claim 8, wherein the step of anomaly analysis in step 5 is:
step 5-1: when the Alice terminal or the Bob terminal is abnormal, the debugging upper computer searches an abnormal record for a log file of the Alice terminal or the Bob terminal;
step 5-2: when the abnormal record indicates that the secret key distribution of the Alice terminal or the Bob terminal is abnormal, the debugging upper computer sends a command of stopping issuing the secret key to the Alice terminal or the Bob terminal;
and when the abnormal record is data cache abnormality, the debugging upper computer displays the data cache abnormality record and the solution on a display screen of the debugging upper computer.
10. The method for debugging the QKD equipment in the quantum communication network according to claim 9, wherein the solution in the step 5-2 is to reset or restart the debugging upper computer, the Alice terminal and the Bob terminal.
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