CN114449062A - Interactive system and method of QKD key management system - Google Patents
Interactive system and method of QKD key management system Download PDFInfo
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- CN114449062A CN114449062A CN202111673541.7A CN202111673541A CN114449062A CN 114449062 A CN114449062 A CN 114449062A CN 202111673541 A CN202111673541 A CN 202111673541A CN 114449062 A CN114449062 A CN 114449062A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 20
- 238000011549 displacement method Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 230000003993 interaction Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
- H04L69/162—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
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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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Abstract
The invention discloses an interactive system and method of a QKD key management system, wherein the method starts a thread and creates a socket of a server corresponding to the thread; the client and the server are connected in a matching way through a socket; the client-side performs code reversal summation on data to be sent to obtain a check bit; the client splices the data to be sent with the check bit and then packs the data into a data frame to be sent to the server; and after receiving the data frame, the server checks and disassembles the format of the data frame, acquires the data frame information and performs corresponding operation or reply. The method disclosed by the invention splices and encapsulates the fields into data frames by adopting a pointer displacement mode when the messages are transmitted by the client, and the server disassembles and analyzes the fields by adopting the pointer displacement mode on the received data frames so as to perform corresponding reply, thereby ensuring the interactive safety among key management systems and improving the interactive efficiency of the systems.
Description
Technical Field
The invention relates to the technical field of quantum cryptography and quantum network communication, in particular to an interactive system and method of a QKD key management system.
Background
The QKD key management system generally uses a key transmission method to perform transmission and interaction during data encryption transmission. The key transmission step is that firstly, the information is encrypted at the sending end of the communication system and then sent out through the TCP/IP protocol stack, and then the information is decrypted after the receiving end receives the information from the TCP/IP protocol stack. But important information transmitted through a TCP/IP protocol stack is easily intercepted, peeped and modified by an attacker, resulting in low security of the interaction between systems.
Therefore, the shortcomings of the prior art need to be improved, a method for solving the security problem in the data encryption transmission process is provided, and meanwhile, the information interaction among all relevant devices of the QKD key management system is facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and solve the problem of security interaction of a QKD key management system, and provides an interaction method of the QKD key management system.
The utility model provides a QKD key management system's interactive system, includes thread start-up module, monitors module, server, matching module, client and server side, the client is equipped with inspection position generation module and packing module, the server side is provided with form inspection module and disassembles the module, wherein:
the thread starting module is used for starting a thread and creating a socket of a server corresponding to the thread;
the monitoring module binds the address of the server with the socket to monitor the thread;
the socket of the matching module matches a client with a server;
the check bit generation module performs inverse code summation on data to be sent to obtain check bits;
the packaging module is used for splicing the data to be sent and the check bits, packaging the spliced data into a data frame and then sending the data frame to a server;
the format checking module is used for checking the format of the received data frame;
the disassembling module is used for disassembling the data frame, acquiring data frame information and performing corresponding operation or reply.
The method is realized by the following technical scheme:
an interactive method of a QKD key management system, the method applies a server, a client and a server, and the method comprises the following steps:
step 1: starting a thread and creating a socket of a server corresponding to the thread;
step 2: binding the address of the server with the socket so as to monitor the thread;
and step 3: the client and the server are connected in a matching mode through the socket;
and 4, step 4: the client-side performs code reversal summation on data to be sent to obtain a check bit;
and 5: the client splices the data to be sent and the check bit and then packs the data into a data frame to be sent to a server;
step 6: the server side checks the format of the data frame after receiving the data frame;
and 7: if the check is unsuccessful, the server discards the data frame and jumps to the step 3;
and if the check is successful, the server disassembles the data frame, acquires data frame information and performs corresponding operation or reply.
Further, the data frame in step 5 includes a data frame header, a message length, a message type, an extended length, an extended command type, an extended command direction, extended data, a message body, check bits, and a data frame tail.
Further, the message types include active sending and passive acknowledgement.
Further, the extended command types include a heartbeat signal, a request to connect a device, disconnect a device, and send data.
Further, the data frame header, the message length and the message type are set by using a define macro definition command.
Further, the step of splicing the data and the check bits is specifically as follows:
step a: setting a buffer character string;
step b: applying for a block of memory in the buffer character string;
step c: and storing the data and the check bits into the address block corresponding to the memory according to the format of the data frame by adopting a pointer displacement method.
Further, the data frame format check of step 6 includes format validity of the data frame and correctness of check bits.
Further, the validity check of the format of the data frame includes checking whether the length of the data frame, the position of the head of the data frame, and the position of the tail of the data frame are valid.
Further, the correctness checking of the check bits of the data frame specifically includes: comparing the check bit with the result of the check bit after the code inversion summation calculation;
if the comparison result is consistent, judging that the check code is correct;
if the comparison result is inconsistent, the check code is judged to be incorrect.
Further, the step of disassembling the data frame by the server is as follows:
step A: after receiving the data frame, the server side disassembles the data frame by adopting a pointer displacement method to obtain a field;
and B: the server side analyzes the field type of the extended command type and makes corresponding reply according to the field;
when the message type is actively sent, the server side returns a data frame to the client side;
when the message type is the passive response, the server does not need to return a data frame to the client.
The invention has the beneficial effects that:
the fields are spliced and encapsulated into data frames in a pointer displacement mode when the messages are transmitted by the quantum network and the client of the key management system, the data frames are sent to the server, and the server receives the encapsulated data frames and then disassembles and analyzes the fields in a pointer displacement mode so as to perform corresponding reply, so that the interactive safety among the key management systems is ensured, and the interactive efficiency of the systems is improved.
Drawings
FIG. 1 is a functional block diagram of an interactive system of a QKD key management system of the present invention;
FIG. 2 is a flowchart illustrating the steps of an interactive method of a QKD key management system in accordance with the present invention;
FIG. 3 is a data frame format diagram of an interaction method of a QKD key management system according to the present invention;
FIG. 4 is a flow chart of splicing data frames at the server side of an interaction method of the QKD key management system according to the present invention;
fig. 5 is a flowchart of a server-side parsing data frame of an interaction method of the QKD key management system 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, an interactive system of a QKD key management system includes a thread start module, a monitoring module, a server, a matching module, a client and a server, where the client is provided with a check bit generation module and a packing module, and the server is provided with a format check module and a disassembly module, where:
the thread starting module is used for starting a thread and creating a socket of a server corresponding to the thread;
the monitoring module binds the address of the server with the socket to monitor the thread;
the socket of the matching module matches a client with a server;
the check bit generation module performs inverse code summation on data to be sent to obtain check bits;
the packaging module is used for splicing the data to be sent and the check bits, packaging the spliced data into a data frame and then sending the data frame to a server;
the format checking module is used for checking the format of the received data frame;
the disassembling module is used for disassembling the data frame, acquiring data frame information and performing corresponding operation or reply.
The method for realizing the module function of the system is consistent with the scheme method with the corresponding part of the following interaction method of the QKD key management system, and the description is omitted here.
As shown in fig. 2-5, an interactive method of a QKD key management system, which applies the above interactive system of a QKD key management system, includes the following specific steps:
step 1: starting a thread, creating a socket of the server according to a preset parameter, and setting the socket in a non-blocking mode;
step 2: binding the address of the server with the socket so as to monitor the thread;
and step 3: the client and the server are connected in a matching mode through the socket, namely, the server and the client respectively store socket sockets and corresponding relations, and the client and the server send and receive data according to the socket sockets;
and 4, step 4: the client-side performs code reversal summation on data to be sent to obtain a check bit;
and 5: the client splices the data to be sent and the check bit and then packs the data into a data frame to be sent to a server;
when data is packaged, the corresponding contents such as message type, message length, data type, data length, extended message type, extended command direction, and the like need to be determined.
As shown in fig. 3, the packed data frame in step 5 includes a data frame header, a message length, a message type, an extended length, an extended command type, an extended command direction, extended data, a message body, check bits, and a data frame trailer.
The data frame header, the message length and the message type are set by adopting a define macro definition command, the content of each field is defined by macro definition, the readability of system codes and the maintainability of a communication protocol are enhanced, and the fields defined by the macro are directly added to a data frame when data needs to be packaged.
Wherein the message types include active sending and passive answering;
the extended command types include a heartbeat signal, a request to connect a device, disconnect a device, and send data.
The data and check bit splicing method specifically comprises the following steps:
step a: setting a buffer character string; the buffer character string is used for temporarily storing the data frame and providing a memory for the spliced data frame;
step b: applying for a block of memory in the buffer character string;
step c: and storing the data and the check bits into the address block corresponding to the memory according to the format of the data frame by adopting a pointer displacement method.
The client sends the packed data frame to the server, and skips to step 6;
step 6: the server side checks the format of the data frame after receiving the data frame;
the data frame format check of step 6 includes format validity of the data frame and correctness of check bits.
Specifically, the validity check of the format of the data frame includes checking whether the length of the data frame, the position of the head of the data frame, and the position of the tail of the data frame are valid.
Specifically, the correctness check of the check bits of the data frame specifically includes: comparing the check bit with the result of the check bit after the code inversion summation calculation;
if the comparison result is consistent, judging that the check code is correct;
if the comparison result is inconsistent, the check code is judged to be incorrect.
And 7: if the check is unsuccessful, the server discards the data frame and jumps to the step 3;
and if the check is successful, the server disassembles the data frame, acquires data frame information and performs corresponding operation or reply.
As shown in fig. 4, step 6 of the server side disassembly flow is:
step A: after receiving the data frame, the server side disassembles the data frame by adopting a pointer displacement method to obtain a field;
and B: the server side analyzes the field type of the extended command type and makes corresponding reply according to the field;
specifically, when the extended command type field is a heartbeat signal, it needs to further confirm whether the message type field is actively sent or passively responded, and when the message type is actively sent, the server writes the heartbeat response into the message body field in the data frame and packs the data frame to be fed back to the sending end. When the message type is the passive response, the server does not need to return a data frame to the client.
In the process of interaction between devices of the key management system, messages sent when a client and a server interact are spliced and encapsulated into data frames in a pointer displacement mode, and the server needs to acquire the messages and needs to disassemble the data frames in the same pointer displacement mode to acquire information; the efficiency of information interaction between all relevant devices of the key management system can be obviously improved.
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 QKD key management system's interactive system which characterized in that, includes thread start module, monitoring module, server, matching module, client and server, the client is equipped with inspection position generation module and packing module, the server is provided with form inspection module and disassembles the module, wherein:
the thread starting module is used for starting a thread and creating a socket of a server corresponding to the thread;
the monitoring module binds the address of the server with the socket to monitor the thread;
the socket of the matching module matches a client with a server;
the check bit generation module performs inverse code summation on data to be sent to obtain check bits;
the packaging module is used for splicing the data to be sent and the check bits, packaging the spliced data into a data frame and then sending the data frame to a server;
the format checking module is used for checking the format of the received data frame;
the disassembling module is used for disassembling the data frame, acquiring data frame information and performing corresponding operation or reply.
2. An interactive method of a QKD key management system, characterized in that an interactive system of a QKD key management system according to claim 1 is applied, the steps of the method are as follows:
step 1: starting a thread and creating a socket of a server corresponding to the thread;
step 2: binding the address of the server with the socket so as to monitor the thread;
and 3, step 3: the client and the server are connected in a matching mode through the socket;
and 4, step 4: the client-side performs code reversal summation on data to be sent to obtain a check bit;
and 5: the client splices the data to be sent and the check bits and packs the spliced data into data frames to be sent to a server;
step 6: the server side checks the format of the data frame after receiving the data frame;
and 7: if the check is unsuccessful, the server discards the data frame and jumps to the step 3;
and if the check is successful, the server disassembles the data frame, acquires data frame information and performs corresponding operation or reply.
3. The method of claim 2, wherein the data frame in step 5 comprises a header, a length, a type, an extended length, an extended command type, an extended command direction, extended data, a body, check bits, and a trailer.
4. The method of claim 3, wherein the message types include active send and passive reply.
5. The method of claim 3, wherein the extended command types include heartbeat signals, request to connect a device, disconnect a device, and send data.
6. The interactive method of a QKD key management system according to claim 3, characterized in that said data frame header, message length and message type are set using define macro definition commands.
7. The method of claim 2, wherein the step of concatenating the data with the check bits is as follows:
step a: setting a buffer character string;
step b: applying for a block of memory in the buffer character string;
step c: and storing the data and the check bits into the address block corresponding to the memory according to the format of the data frame by adopting a pointer displacement method.
8. The interactive method for a QKD key management system according to claim 2, wherein said data frame format check of step 6 includes format validity of the data frame and correctness of check bits;
the validity check of the format of the data frame comprises checking whether the length of the data frame, the position of the head of the data frame and the position of the tail of the data frame are legal or not.
9. The method of claim 8, wherein the checking of the correctness of the check bits of the data frame is specifically as follows: comparing the check bit with the result of the check bit after the code inversion summation calculation;
if the comparison result is consistent, judging that the check code is correct;
if the comparison result is inconsistent, the check code is judged to be incorrect.
10. The method of claim 2, wherein the step of the server disassembling the data frame is:
step A: after receiving the data frame, the server side disassembles the data frame by adopting a pointer displacement method to obtain a field;
and B: the server side analyzes the field type of the extended command type and makes corresponding reply according to the field;
when the message type is actively sent, the server side returns a data frame to the client side;
when the message type is the passive response, the server does not need to return a data frame to the client.
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