WO2022199186A1

WO2022199186A1 - Internet-of-things communication system based on quantum technology

Info

Publication number: WO2022199186A1
Application number: PCT/CN2021/142718
Authority: WO
Inventors: 王振宇; 徐征
Original assignee: 嘉兴企树网络科技有限公司; 上海企树网络科技有限公司
Priority date: 2021-03-24
Filing date: 2021-12-29
Publication date: 2022-09-29
Also published as: CN112804059A

Abstract

The present application discloses an Internet-of-Things communication system based on quantum technology. The system comprises: an Internet-of-Things terminal, a U-key and a cloud platform, wherein the cloud platform comprises an encryption center; keys are pre-stored in the U-key and the encryption center; the U-key acquires a message to be encrypted of the Internet-of-Things terminal, encrypts same, and sends the encrypted message and a key serial number to the Internet-of-Things terminal by means of a U-key interface; the Internet-of-Things terminal receives the encrypted message and the key serial number, and sends the encrypted message and the key serial number to the cloud platform; and the cloud platform extracts the pre-stored key from the encryption center according to the key serial number, and decrypts the encrypted message, so as to obtain a plaintext message. By implementing the present application, a key is stored in a U-key, and when an Internet-of-Things terminal performs data exchange with a cloud platform, data encryption is performed by using the key in the U-key, so as to realize ciphertext transmission. The technical problem of the security of issuing a key by using a preset key and by means of a short message being relatively poor is solved.

Description

An IoT communication system based on quantum technology

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed on March 24, 2021 with the application number 202110317558.2 and the invention titled "An IoT Communication System Based on Quantum Technology", the entire contents of which are incorporated by reference in in this application.

technical field

The present application relates to the field of communication technologies, and in particular, to an Internet of Things communication system based on quantum technology.

Background technique

With the continuous evolution of urban intelligence and digitization, IoT applications are becoming more and more popular. Correspondingly, the control and coordinated operation of large-scale IoT devices, as well as the serious consequences that may be caused by the loss of control, have also received more and more attention. The security of the Internet of Things will increasingly become one of the basic problems that people need to solve. In order to realize the security of the data exchanged between the IoT terminal and the IoT platform, the exchanged data is usually encrypted.

At present, the encrypted transmission of data between the IoT terminal and the IoT platform usually adopts the following methods: First, the IoT terminal and the IoT platform negotiate a key in advance, and the key is preset into the IoT terminal and the IoT platform at the same time. , using the preset key to realize the encrypted transmission of data between the IoT terminal and the IoT platform; the second is that the key is distributed by the IoT platform and sent to the IoT terminal through a short message, and the distributed key is used to realize Encrypted transmission of data between IoT terminals and IoT platforms. However, the methods of presetting the key and issuing the key through a short message can easily leak the key, resulting in poor security.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present application provide an IoT communication system based on quantum technology, so as to solve the encrypted transmission of data between the IoT terminal and the IoT platform in the prior art by using a preset key and The method of sending the key by short message will cause the key to be easily leaked, which is a technical problem of poor security.

The technical solutions proposed in this application are as follows:

Embodiments of the present application provide an IoT communication system based on quantum technology, including: an IoT terminal, a U-key (a storage device with a USB interface with a chip inside), and a cloud platform, where the cloud platform includes an encryption center, The secret key generated by the quantum random number generator is pre-stored in the U-key and the encryption center, and the U-key is used to obtain the message to be encrypted through the U-key interface of the Internet of Things terminal. The stored secret key encrypts the message to be encrypted, and sends the encrypted message and the serial number of the secret key to the IoT terminal through the U-key interface; the IoT terminal receives the encrypted message and the secret key serial number, send the encrypted message and the secret key serial number to the cloud platform; the cloud platform takes out the secret key pair pre-stored in the encryption center according to the secret key serial number The encrypted message is decrypted to obtain a plaintext message.

Optionally, the U-key is also used to obtain parameter information of the IoT terminal through the U-key interface before obtaining the message to be encrypted, and encrypt the parameter information by using a pre-stored secret key, Send the encrypted parameters, the serial number of the secret key and the U-key number to the Internet of Things terminal through the U-key interface; the terminal of the Internet of Things receives the encrypted parameters, the serial number of the secret key and the U-key number , send the encrypted parameters, the secret key serial number and the U-key number to the cloud platform; the cloud platform takes out the secret key pre-stored in the encryption center according to the secret key serial number to the encrypted Decrypt the parameters of the device, bind the plaintext parameters and the U-key number, obtain the binding information and save it, and send the binding information to the Internet of Things terminal.

Optionally, when the IoT terminal sends the encrypted message and the key serial number to the cloud platform, it also sends the binding information to the cloud platform; the cloud platform receives For the binding information, verify the binding information and the saved binding information, and after the verification is passed, take out the secret key pre-stored in the encryption center according to the secret key serial number to encrypt the message. Decrypt to get the plaintext message.

Optionally, the quantum technology-based IoT communication system further includes: an IoT subsystem gateway, the IoT subsystem gateway connects the IoT terminal and the cloud platform respectively, and the IoT subsystem gateway connects the The encrypted message and the key serial number output by the IoT terminal are forwarded to the cloud platform.

Optionally, the quantum technology-based Internet of Things communication system further includes: a gateway U-key, in which a secret key generated by a quantum random number generator is pre-stored, and the gateway U-key passes the The U-key interface of the IoT subsystem gateway is connected to the IoT subsystem gateway, and the IoT subsystem gateway receives the encrypted message and the secret key serial number output by the IoT terminal, according to The secret key serial number is extracted from the secret key pre-stored in the gateway U-key to decrypt the encrypted message to obtain a plaintext message.

Optionally, the quantum technology-based IoT communication system further includes: an edge server, where the edge server is connected to the IoT terminal and the cloud platform, respectively, and the edge server outputs the The encrypted message and the key serial number are forwarded to the cloud platform.

Optionally, the quantum technology-based IoT communication system further includes: an edge U-key, wherein the edge U-key is pre-stored with a secret key generated by a quantum random number generator, and the edge U-key passes the The U-key interface of the edge server is connected to the edge server, the edge server receives the encrypted message and the secret key serial number output by the IoT terminal, and retrieves the edge according to the secret key serial number The encrypted message is decrypted by the secret key pre-stored in the U-key to obtain a plaintext message.

Optionally, the encryption center includes: a secret key generation unit and a secret key storage unit, the quantum random number generator is set in the secret key generation unit, and the U-key and the secret key storage unit are connected to the The secret key generation unit obtains and stores the secret key generated by the quantum random number generator, and the U-key and the secret key stored in the secret key storage unit are in the same order.

Optionally, the encryption center further includes: a secret key management unit, the secret key management unit is configured to manage the secret key in the gateway U-key, so that the secret key in the gateway U-key and the The secret keys in the U-key connected to the IoT terminal are the same.

Optionally, the key management unit in the encryption center is further configured to manage the key in the edge U-key, so that the key in the edge U-key is the same as the one connected to the IoT terminal. The secret key in the U-key is the same.

The technical solution provided by the application has the following effects:

In the IoT communication system based on quantum technology provided by the embodiments of this application, by setting a U-key and pre-storing the secret key generated by the quantum random number generator in the U-key, when the IoT terminal and the cloud platform perform data interaction , the IoT platform can be connected to the U-key, and use the secret key stored in the U-key for data encryption. At the same time, since the secret key is also pre-stored in the cloud platform, the data sent to the cloud platform can be decrypted to obtain plaintext. In addition, due to the indissoluble and indivisible nature of quantum, the random code generated based on quantum is a true random code, and using this random code as the secret key is theoretically unbreakable. Therefore, the quantum-based random code provided by the embodiments of this application The technological Internet of Things communication system uses the secret key generated by the quantum random number generator for encryption and decryption, which can further ensure the security of transmitted data, and solves the problem of encryption and decryption security by presetting keys and issuing keys through short messages. Poor technical issues.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. The drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a structural block diagram of a quantum technology-based Internet of Things communication system according to an embodiment of the present application;

2 is a structural block diagram of a quantum technology-based IoT communication system according to another embodiment of the present application;

FIG. 3 is a structural block diagram of an IoT communication system based on quantum technology according to another embodiment of the present application.

Detailed ways

The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations on this application. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components, which can be a wireless connection or a wired connection connect. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict with each other.

An embodiment of the present application provides an IoT communication system based on quantum technology. As shown in FIG. 1 , the IoT communication system based on quantum technology includes: an IoT terminal 10, a U-key 20 and a cloud platform 30. The cloud platform 30 includes The encryption center, U-key20 and the encryption center are pre-stored with the secret key generated by the quantum random number generator, and the U-key20 is used to obtain the message to be encrypted through the U-key20 interface of the Internet of Things terminal 10. The secret key encrypts the message to be encrypted, and sends the encrypted message and the secret key serial number to the IoT terminal 10 through the U-key20 interface; the IoT terminal 10 receives the encrypted message and the secret key serial number, The encrypted message and the key serial number are sent to the cloud platform 30; the cloud platform 30 takes out the pre-stored key in the encryption center according to the key serial number and decrypts the encrypted message to obtain a plaintext message. In a specific implementation manner, the U-key20 interface may be a USB type interface, or may be other types of interfaces, which are not limited in this application.

In the IoT communication system based on quantum technology provided by the embodiments of the present application, by setting the U-key20 and pre-stored in the U-key20 the secret key generated by the quantum random number generator, data is performed on the IoT terminal 10 and the cloud platform 30. During interaction, the IoT platform can be connected to U-key20, and use the secret key stored in U-key20 for data encryption. At the same time, since the secret key is also pre-stored in cloud platform 30, the data sent to cloud platform 30 It can be decrypted to get the plaintext. In addition, due to the indissoluble and indivisible nature of quantum, the random code generated based on quantum is a true random code, and using this random code as the secret key is theoretically unbreakable. Therefore, the quantum-based random code provided by the embodiments of this application The technological Internet of Things communication system uses the secret key generated by the quantum random number generator for encryption and decryption, which can further ensure the security of transmitted data, and solves the problem of encryption and decryption security by presetting keys and issuing keys through short messages. Poor technical issues.

In one embodiment, as shown in FIG. 1 , when the cloud platform 30 sends data to the IoT terminal 10, the above method can also be used, that is, the cloud platform 30 first uses the secret key pre-stored by the encryption center to perform the data transmission. Encrypt, and then send the encrypted data and the corresponding secret key serial number to the IoT terminal 10, and the IoT terminal 10 extracts the corresponding secret key from the U-key 20 according to the secret key serial number to decrypt to obtain plaintext.

For a cloud platform 30, there may be multiple IoT terminals 10 to communicate with it. In order to ensure that the secret key in the U-key 20 is not detected, one IoT terminal 10 can be bound to one U-key 20, that is, the IoT terminal 10 and the U-key 20 are set in a one-to-one correspondence. In an embodiment, before the IoT terminal 10 and the cloud platform 30 perform data transmission, the U-key 20 and the IoT terminal 10 may be bound by the following process. Specifically, the U-key 20 is also used to obtain the parameter information of the IoT terminal 10 through the U-key interface before obtaining the message to be encrypted, encrypt the parameter information by using the pre-stored secret key, and encrypt the encrypted parameters and secret keys. The serial number and the U-key number are sent to the IoT terminal 10 through the U-key interface; the IoT terminal 10 receives the encrypted parameters, the secret key serial number and the U-key number, and sends the encrypted parameters, the secret key serial number and the U-key number. The cloud platform 30 takes out the pre-stored secret key in the encryption center according to the secret key serial number, decrypts the encrypted parameters, binds the plaintext parameters and the U-key number, obtains the binding information and saves it. The binding information is sent to the IoT terminal 10 . The parameter information includes information such as the unique hardware number and user number of the IoT terminal 10 .

In one embodiment, after the U-key 20 and the IoT terminal 10 are bound, the IoT terminal 10 can perform data transmission by means of the bound U-key 20 and the cloud platform 30 . Specifically, the IoT terminal 10 first encrypts the data through the secret key in the U-key 20, and when sending the encrypted message and the secret key serial number to the cloud platform 30, it also sends the binding information to the cloud platform 30; the cloud platform 30 Receive the binding information, verify the binding information and the saved binding information, and after the verification is passed, extract the secret key pre-stored in the encryption center according to the secret key serial number to decrypt the encrypted message to obtain a plaintext message.

In one embodiment, the encryption center includes: a secret key generation unit and a secret key storage unit, the quantum random number generator is arranged in the secret key generation unit, and the U-key20 and the secret key storage unit are connected to the secret key generation unit to obtain the quantum random number. The secret key generated by the number generator is stored, and the sequence of U-key20 and the secret key stored in the secret key storage unit is consistent. In a specific embodiment, before the U-key 20 is distributed to the user and the IoT terminal 10 is bound, the U-key 20 can be keyed in the encryption center, that is, the secret key is stored in the U-key 20, specifically , the secret keys added to the U-key 20 bound to different IoT terminals 10 may be different.

In an embodiment, in order to ensure the flexibility of the system and the requirements of the encryption level, when encrypting in the U-key20, the keys can be obtained in order, or the keys can be obtained randomly, as long as the U-key20 and the key storage unit are guaranteed. The order of the keys saved in the data is consistent, and the key serial number can be transmitted at the same time during data transmission to obtain the accurate key; at the same time, in the scenario with strict encryption requirements, it can support one key at a time, that is, the use of one key It is discarded after one time, and the next time it is encrypted with another key. At the same time, in the one-time-one-key scenario, the keys in the key pool will be consumed. Therefore, the key group of the encryption center can be updated online to U-key20 every preset time.

During data transmission between the IoT terminal 10 and the cloud platform 30 , other structures may also be required to forward the data, so that the transmitted data can be sent to the cloud platform 30 smoothly. Therefore, in an embodiment, as shown in FIG. 2 , the IoT communication system based on quantum technology further includes: the IoT subsystem gateway 40, and the IoT subsystem gateway 40 is respectively connected to the IoT terminal 10 and the cloud platform 30, The IoT subsystem gateway 40 forwards the encrypted message and the secret key serial number output by the IoT terminal 10 to the cloud platform 30 . In one embodiment, in addition to the IoT subsystem gateway 40, the IoT communication system based on quantum technology further includes: an edge server 50, the edge server 50 is respectively connected to the IoT terminal 10 and the cloud platform 30, and the edge server 50 forwards the encrypted message and the key serial number output by the IoT terminal 10 to the cloud platform 30 .

It should be noted that the IoT subsystem gateway 40 and the edge server 50 can be set in the communication system according to actual needs. At this time, during data transmission, the data output by the IoT terminal 10 can first pass through the IoT subsystem. The gateway 40 forwards it, and then forwards it to the cloud platform 30 through the edge server 50 . In addition, only the IoT subsystem gateway 40 or the edge server 50 may be set according to actual needs. It should be further noted that, when the IoT subsystem gateway 40 or the edge server 50 is performing data transmission, it can only forward the data and does not have the function of decrypting the data.

In order to enable the IoT subsystem gateway 40 to realize data decryption when forwarding data, as shown in FIG. 3, in an embodiment, the IoT communication system based on quantum technology further includes: a gateway U-key41, a gateway U-key The secret key generated by the quantum random number generator is pre-stored in the key41, the gateway U-key41 is connected to the IoT subsystem gateway 40 through the U-key interface of the IoT subsystem gateway 40, and the IoT subsystem gateway 40 receives the IoT terminal 10. The encrypted message and the key serial number are output, and according to the key serial number, the key pre-stored in the gateway U-key 41 is taken out, and the encrypted message is decrypted to obtain a plaintext message. In a specific embodiment, different IoT terminals 10 may communicate with the cloud platform 30 through different IoT subsystem gateways 40. Therefore, when the gateway U-key 41 adds the secret key in the encryption center, it can only save the It corresponds to the secret key saved in the U-key bound to the connected IoT terminal 10 . Specifically, a secret key management unit may be set in the encryption center, and the secret key management unit is used to manage the secret key in the gateway U-key41, so that the secret key in the gateway U-key41 and the U-key connected to the IoT terminal 10 The keys are the same.

In addition, in order to enable the edge server 50 to realize data decryption when forwarding data, in an embodiment, as shown in FIG. 3 , the IoT communication system based on quantum technology further includes: edge U-key51, edge U-key51 The secret key generated by the quantum random number generator is stored in advance, and the edge U-key 51 is connected to the edge server 50 through the U-key interface of the edge server 50, and the edge server 50 receives the encrypted message and secret output from the IoT terminal 10. The key sequence number, according to the key sequence number, take out the pre-stored key in the edge U-key51 to decrypt the encrypted message, and obtain the plaintext message. Like the IoT subsystem gateway 40, the key management unit in the encryption center can also manage the secret key in the edge U-key51, so that the secret key in the edge U-key51 and the U-key connected to the IoT terminal 10 The keys are the same. Specifically, the key management unit can make the gateway U-key 41 only save the key saved in the U-key bound to the corresponding connected IoT terminal 10 when the gateway U-key 41 performs key addition in the encryption center.

In one embodiment, since the gateway U-key 41 and the edge U-key 51 are set, the secure dialogue between the IoT terminal 10 and the IoT subsystem gateway or the IoT terminal 10 and the edge server 50 does not need to go through the encryption center. In addition, for atypical IoT interconnection, such as data transmission between the IoT terminal 10 and the edge server 50, or the IoT terminal 10 is directly connected with the IoT subsystem gateway 40, and the multi-layer IoT subsystem gateway 40 is set Or in the case of the multi-layer edge server 50, the communication mode in the communication system provided in the embodiment of the present application may be used for transmission.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above may refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

To sum up, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims

An Internet of Things communication system based on quantum technology, characterized in that it includes: Internet of Things terminal, U-key and cloud platform,

The cloud platform includes an encryption center, and the U-key and the encryption center are pre-stored with a secret key generated by a quantum random number generator, and the U-key is used to pass the U-key interface of the Internet of Things terminal. Obtaining the message to be encrypted, encrypting the message to be encrypted by using a pre-stored secret key, and sending the encrypted message and the serial number of the secret key to the Internet of Things terminal through the U-key interface;

The IoT terminal receives the encrypted message and the secret key serial number, and sends the encrypted message and the secret key serial number to the cloud platform;

The cloud platform takes out the secret key pre-stored in the encryption center according to the secret key serial number, and decrypts the encrypted message to obtain a plaintext message.
The Internet of Things communication system based on quantum technology according to claim 1, wherein the U-key is further used to obtain parameters of the Internet of Things terminal through the U-key interface before obtaining the to-be-encrypted message information, using a pre-stored secret key to encrypt the parameter information, and sending the encrypted parameter, secret key serial number and U-key number to the Internet of Things terminal through the U-key interface;

The IoT terminal receives the encrypted parameters, the secret key serial number and the U-key number, and sends the encrypted parameters, the secret key serial number and the U-key number to the cloud platform;

The cloud platform takes out the secret key pre-stored in the encryption center according to the secret key serial number, decrypts the encrypted parameter, binds the plaintext parameter and the U-key number, and obtains the binding information for storage. , and send the binding information to the IoT terminal.
The Internet of Things communication system based on quantum technology according to claim 2, wherein,

When the IoT terminal sends the encrypted message and the secret key serial number to the cloud platform, it also sends the binding information to the cloud platform;

The cloud platform receives the binding information, verifies the binding information and the saved binding information, and after the verification is passed, retrieves the secret key pair that is pre-stored in the encryption center according to the secret key serial number. The encrypted message is decrypted to obtain a plaintext message.
The IoT communication system based on quantum technology according to claim 1, further comprising: an IoT subsystem gateway, wherein the IoT subsystem gateway is respectively connected to the IoT terminal and the cloud platform,

The IoT subsystem gateway forwards the encrypted message and the secret key serial number output by the IoT terminal to the cloud platform.
The Internet of Things communication system based on quantum technology according to claim 4, further comprising: a gateway U-key, wherein the gateway U-key is pre-stored with a secret key generated by a quantum random number generator, the The gateway U-key is connected to the IoT subsystem gateway through the U-key interface of the IoT subsystem gateway,

The IoT subsystem gateway receives the encrypted message and the secret key serial number output by the IoT terminal, and retrieves the secret key pair pre-stored in the gateway U-key according to the secret key serial number. The encrypted message is decrypted to obtain a plaintext message.
The IoT communication system based on quantum technology according to claim 5, further comprising: an edge server, wherein the edge server is respectively connected to the IoT terminal and the cloud platform,

The edge server forwards the encrypted message and the secret key serial number output by the IoT terminal to the cloud platform.
The Internet of Things communication system based on quantum technology according to claim 6, further comprising: an edge U-key, wherein the edge U-key is pre-stored with a secret key generated by a quantum random number generator, and the edge U-key is stored in advance. The edge U-key is connected to the edge server through the U-key interface of the edge server,

The edge server receives the encrypted message and the secret key serial number output by the IoT terminal, and retrieves the encrypted key from the edge U-key according to the secret key serial number. The message is decrypted to obtain the plaintext message.
The Internet of Things communication system based on quantum technology according to claim 1, wherein the encryption center comprises: a secret key generation unit and a secret key storage unit, and the quantum random number generator is arranged in the secret key generation unit , the U-key and the secret key storage unit are connected to the secret key generation unit, and the secret key generated by the quantum random number generator is obtained and stored, and the U-key and the secret key stored in the secret key storage unit are stored. The keys are in the same order.
The Internet of Things communication system based on quantum technology according to claim 7, wherein the encryption center further comprises: a secret key management unit, the secret key management unit is used to monitor the secret key in the U-key of the gateway. The key is managed so that the secret key in the U-key of the gateway is consistent with the secret key in the U-key connected to the IoT terminal.
The Internet of Things communication system based on quantum technology according to claim 9, wherein the key management unit in the encryption center is further configured to manage the key in the edge U-key, so that the The secret key in the edge U-key is the same as the secret key in the U-key connected to the IoT terminal.