CN115484025A - Vehicle encrypted communication method and device - Google Patents
Vehicle encrypted communication method and device Download PDFInfo
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- CN115484025A CN115484025A CN202211056715.XA CN202211056715A CN115484025A CN 115484025 A CN115484025 A CN 115484025A CN 202211056715 A CN202211056715 A CN 202211056715A CN 115484025 A CN115484025 A CN 115484025A
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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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- 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
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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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
- H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
Abstract
The invention relates to a vehicle encryption communication method and a device, wherein the method comprises the following steps: the vehicle-mounted communication terminal sends a connection request to a target terminal; receiving first equipment information of a target terminal returned by the target terminal; acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal, and encrypting first equipment information and second equipment information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information; sending the negotiation encryption information to a quantum key service center; receiving a first session quantum key and a first key element generated by the quantum key service center based on the negotiation encryption information, and sending the first key element to a target terminal; and carrying out encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element. According to the scheme, the quantum key and the session quantum key are negotiated, so that the attack of a quantum computer can be resisted, and the safety of communication between the vehicle and the outside is ensured.
Description
Technical Field
The invention relates to the technical field of vehicle communication, in particular to a vehicle encryption communication method and device.
Background
The software defined automobile has become a development trend of automobiles, the complexity of automobile software is greatly increased, and as a plurality of vehicle-mounted Electronic Control Units (ECUs) are provided, the network is complicated, once the automobile establishes communication with the outside, new network attacks are developed, so that the possibility that the originally closed network is invaded is increased.
When a traditional vehicle-mounted T-BOX (Telematics BOX) communicates with a target terminal, an RSA algorithm is adopted to encrypt data. The RSA algorithm is difficult to crack by the computing power of the traditional computer, but the quantum computer will break the difficulty in the future. The exponential improvement of the computing power of the quantum computer, the attack of the quantum computer cannot be resisted by the traditional encryption communication mode, and the automobile is attacked in the future, so that the information leakage even threatens the life safety of drivers and passengers.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, a first aspect of the present invention provides a vehicle encryption communication method, which is applied to a vehicle-mounted communication terminal of a vehicle-mounted communication system, where the vehicle-mounted communication system further includes a target terminal and a quantum key service center, and the target terminal is a terminal that requests communication for the vehicle-mounted communication terminal, and the method includes:
sending a connection request to the target terminal;
receiving first equipment information of the target terminal returned by the target terminal;
acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal, and encrypting the first equipment information and second equipment information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information;
sending the negotiation encryption information to the quantum key service center to apply for a session quantum key at the vehicle-mounted communication terminal side;
receiving a first session quantum key and a first key element generated by the quantum key service center based on the negotiation encryption information, and sending the first key element to the target terminal, wherein the first key element is used for the target terminal to apply a second session quantum key and a second key element of the target terminal side to the quantum key service center;
and carrying out encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
Optionally, before sending the connection request to the target terminal, the method further includes:
acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal;
and encrypting first registration information of the vehicle-mounted communication terminal by using the first negotiation quantum key, and sending the first registration information to the quantum key service center so as to perform registration authentication in the quantum key service center.
Optionally, the storing a first negotiation quantum key in the secure medium, and the obtaining the first negotiation quantum key from the secure medium of the vehicle-mounted communication terminal includes:
determining a quantum key state in the secure media;
and under the condition that the quantum key state is a normal state, acquiring a first negotiation quantum key from a safety medium of the vehicle-mounted communication terminal.
Optionally, after determining the quantum key state in the secure medium, the method further includes:
and under the condition that the quantum key state is a depletion state, carrying out encrypted data interaction with the target terminal by using a common encryption algorithm.
Optionally, the performing encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element, and the second key element includes:
sending first data encrypted by using the first session quantum key to the target terminal;
receiving second data returned by the target terminal based on the content of the first data after the target terminal decrypts the first data based on the first key element; the second data is encrypted by using the second session quantum key;
and decrypting the second data by using the second key element to obtain the data content of the second data.
Optionally, the vehicle-mounted communication system further includes a quantum key distribution device and a quantum key charger, where the quantum key distribution device is configured to distribute a first negotiated quantum key to the quantum key charger, and the quantum key charger is configured to charge the first negotiated quantum key into the secure medium.
The second aspect of the embodiment of the invention provides a vehicle encryption communication method, which is applied to a target terminal of a vehicle-mounted communication system, wherein the vehicle-mounted communication system further comprises the vehicle-mounted communication terminal and a quantum key service center, the target terminal is any one of a cloud server, a mobile terminal, an intelligent transportation facility and a vehicle-mounted communication terminal, and the method comprises the following steps:
responding to a connection request of the vehicle-mounted communication terminal, returning first device information of the target terminal to the vehicle-mounted communication terminal, wherein the first device information is used for the vehicle-mounted communication terminal to apply for a first session quantum key and a first key element from the quantum key service center;
receiving the first key element acquired by the vehicle-mounted communication terminal from the quantum key service center, and applying a second session quantum key and a second key element of the target terminal side to the quantum key service center by using the first key element;
returning the second key element to the vehicle-mounted communication terminal;
and carrying out encrypted data interaction with the vehicle-mounted communication terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
Optionally, the target terminal is a cloud server, and before returning the first device information of the target terminal to the vehicle-mounted communication terminal, the method further includes:
acquiring a second negotiation quantum key which is pre-imported into the target terminal by the quantum key service center;
and encrypting second registration information of the target terminal by using the second negotiation quantum key, and sending the second registration information to the quantum key service center so as to perform registration authentication in the quantum key service center.
A third aspect of an embodiment of the present invention provides a vehicle encryption communication apparatus, applied to a target terminal of a vehicle-mounted communication system, where the vehicle-mounted communication system further includes a vehicle-mounted communication terminal and a quantum key service center, and the apparatus includes:
a connection request sending module, configured to send a connection request to the target terminal;
the first equipment information receiving module is used for receiving the first equipment information of the target terminal returned by the target terminal;
a first negotiation key obtaining module, configured to obtain a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal, and encrypt the first device information and the second device information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information;
the negotiation encryption information sending module is used for sending the negotiation encryption information to the quantum key service center so as to apply for a session quantum key at the vehicle-mounted communication terminal side;
a quantum key receiving module, configured to receive a first session quantum key and a first key element generated by the quantum key service center based on the negotiation encryption information, and send the first key element to the target terminal, where the first key element is used for the target terminal to apply for a second session quantum key and a second key element on the target terminal side from the quantum key service center;
and the first interaction module is used for carrying out encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
Optionally, the apparatus further comprises:
the first negotiation quantum key acquisition module is used for acquiring a first negotiation quantum key from a safety medium of the vehicle-mounted communication terminal;
the first registration module is configured to encrypt first registration information of the vehicle-mounted communication terminal by using the first negotiation quantum key, and send the first registration information to the quantum key service center, so as to perform registration authentication in the quantum key service center.
Optionally, the first negotiation quantum key obtaining module is specifically configured to:
determining a quantum key state in the secure media;
and under the condition that the quantum key state is a normal state, acquiring a first negotiation quantum key from a safety medium of the vehicle-mounted communication terminal.
Optionally, the apparatus further comprises:
and the common encryption communication module is used for carrying out encryption data interaction with the target terminal by using a common encryption algorithm under the condition that the quantum key state is a depletion state.
Optionally, the first interaction module is specifically configured to:
sending first data encrypted by the first session quantum key to the target terminal;
receiving second data returned by the target terminal based on the content of the first data after the target terminal decrypts the first data based on the first key element; the second data is encrypted by using the second session quantum key;
and decrypting the second data by using the second key element to obtain the data content of the second data.
A fourth aspect of the present invention provides a vehicle encryption communication apparatus, which is applied to a target terminal of a vehicle-mounted communication system, where the vehicle-mounted communication system further includes a vehicle-mounted communication terminal and a quantum key service center, and the target terminal is any one of a cloud server, a mobile terminal, an intelligent transportation facility, and a vehicle-mounted communication terminal, and the method includes:
a first device information returning module, configured to return, in response to a connection request of the vehicle-mounted communication terminal, first device information of the target terminal to the vehicle-mounted communication terminal, where the first device information is used for the vehicle-mounted communication terminal to apply for a first session quantum key and a first key element from the quantum key service center;
a key element receiving module, configured to receive the first key element that is obtained by the vehicle-mounted communication terminal from the quantum key service center, and apply for a second session quantum key and a second key element on the target terminal side from the quantum key service center by using the first key element;
a key element returning module, configured to return the second key element to the vehicle-mounted communication terminal;
and the second interaction module is used for carrying out encrypted data interaction with the vehicle-mounted communication terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
Optionally, the target terminal is a cloud server, and the apparatus further includes:
a second negotiation quantum key obtaining module, configured to obtain a second negotiation quantum key that is pre-imported into the target terminal by the quantum key service center;
and the second registration module is used for encrypting second registration information of the target terminal by using the second negotiation quantum key and sending the second registration information to the quantum key service center so as to perform registration authentication in the quantum key service center.
A fifth aspect of the present invention proposes an electronic device comprising a processor and a memory, the memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions, which is loaded and executed by the processor to implement the vehicle encrypted communication method according to the first or second aspect.
A sixth aspect of the present invention provides a computer-readable storage medium having stored therein at least one instruction, at least one program, set of codes, or set of instructions, which is loaded and executed by a processor to implement the vehicle encrypted communication method according to the first or second aspect.
The embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, a vehicle-mounted communication terminal sends a connection request to a target terminal; receiving first equipment information of a target terminal returned by the target terminal; acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal, and encrypting first equipment information and second equipment information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information; sending the negotiation encryption information to a quantum key service center to apply for a session quantum key at the vehicle-mounted communication terminal side; receiving a first session quantum key and a first key element generated by the quantum key service center based on negotiation encryption information, and sending the first key element to a target terminal, wherein the first key element is used for the target terminal to vector the quantum key service center to apply for a second session quantum key at the target terminal side; and carrying out encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element. The method and the device encrypt the device information by using the negotiation quantum key to obtain negotiation encryption information, apply for the session quantum key by using the negotiation encryption information, and perform data interaction by using the first session quantum key obtained by applying and the second session quantum key obtained by applying by the target terminal. The security of the negotiation quantum key and the session quantum key is based on the quantum unmeasurable characteristic, and the quantum key is randomly generated during communication, so that the quantum key cannot be intercepted and cracked, the attack of a quantum computer can be resisted, and the security of communication between a vehicle and the outside is ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art it is also possible to derive other drawings from these drawings without inventive effort.
Fig. 1 is a schematic diagram of a vehicle-mounted communication system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a first vehicle encrypted communication method according to an embodiment of the present invention.
FIG. 3 is a flowchart illustrating steps of a second method for encrypted vehicle communication according to an embodiment of the present invention;
fig. 4 is an encrypted communication timing diagram of a vehicle-mounted communication terminal and a target terminal according to an embodiment of the present invention;
fig. 5 is a block diagram of a first vehicle encryption communication device according to an embodiment of the present invention;
fig. 6 is a block diagram of a second vehicle encryption communication device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The present specification provides method steps as described in the examples or flowcharts, but more or fewer steps may be included based on routine or non-invasive labor. In practice, the system or server product may be implemented in a sequential or parallel manner (e.g., parallel processor or multi-threaded environment) according to the embodiments or methods shown in the figures.
The embodiment of the invention is applied to a vehicle-mounted communication terminal of a vehicle-mounted communication system, the vehicle-mounted communication system also comprises a target terminal and a quantum key service center, and the target terminal is a terminal which requests communication for the vehicle-mounted communication terminal.
Specifically, the quantum key service center is mainly responsible for registration management of the device and management of the quantum key, and in the embodiment of the invention, the quantum key service center is responsible for registration management of the target terminal, the secure medium and the vehicle-mounted communication terminal, as well as for management of charging the quantum key and negotiation management of the session quantum key.
The target terminal and the vehicle-mounted communication terminal are managed by the quantum key service center, and quantum encryption communication can be carried out after the quantum key service center applies for registration.
In a possible implementation manner, the target terminal is any one of a cloud server, a mobile terminal, an intelligent transportation facility and an on-vehicle communication terminal.
The vehicle-mounted communication terminal comprises a vehicle-mounted T-Box (Telematics Box). The T-box is an important component of the Internet of vehicles. The T-box is called a telematics box in its entirety and is one of four major parts of the Internet of vehicles system. The other three items are respectively a host, a mobile phone APP and a background system. The vehicle-mounted communication terminal can provide more network services for the vehicle. The working principle of the system is based on mobile 4G and 5G communication, and under the condition of a network, the system can complete the functions of a satellite positioning system, real-time vehicle data acquisition, vehicle running route recording, vehicle related fault monitoring, vehicle remote control through the network and the like.
The cloud server is used for acquiring preset quantum key file information and binding the preset quantum key file information with the preset quantum key file information. The cloud server is connected with the quantum key service center, the equipment information and the preset quantum key file information are used for carrying out registration authentication on the quantum key service center, and the quantum key service center can manage the cloud server and the preset quantum key file.
The mobile terminal comprises intelligent terminals such as a mobile phone, a mobile computer, a tablet computer and wearable equipment.
The intelligent transportation facilities refer to transportation facilities based on modern electronic information technology, and can comprise intelligent transportation equipment such as signal machines, bayonets, electric polices, cameras, velocimeters, traffic toll devices, vehicle rescue, traffic safety facilities, license plate recognition systems and intelligent parking lots.
The embodiment of the invention can realize encrypted communication between the vehicle-mounted communication terminal and the cloud server, between the vehicle-mounted communication terminal and the mobile terminal, between the vehicle-mounted communication terminal and the intelligent transportation facility, and between the vehicle-mounted communication terminal and the vehicle-mounted communication terminal.
In one possible implementation, the vehicle-mounted communication system further includes a quantum key distribution device and a quantum key charger, the quantum key distribution device is configured to distribute a first negotiated quantum key to the quantum key charger, and the quantum key charger is configured to charge the first negotiated quantum key into the secure medium.
Fig. 1 is a schematic diagram of a vehicle-mounted communication system according to an embodiment of the present invention.
As shown in fig. 1, the quantum key service center is mainly responsible for registration management of the device and management of the quantum key, and in this scheme, is responsible for registration management of the cloud server, the secure media and the vehicle-mounted communication terminal, management of the charging quantum key, and negotiation management of the session quantum key. A quantum key service center and quantum key distribution equipment are deployed on the cloud server side, and quantum key distribution equipment and a quantum key charging machine are deployed on the terminal side. When the automobile leaves a factory or is sold, the secure medium is used for filling the quantum key, the vehicle-mounted communication terminal uses the negotiation quantum key in the secure medium to negotiate with the quantum key service center for quantum encryption secure channel, and registration authentication of the equipment and negotiation of the quantum session key are achieved.
Fig. 2 is a flowchart illustrating steps of a first vehicle encrypted communication method according to an embodiment of the present invention.
The method is applied to a vehicle-mounted communication terminal of a vehicle-mounted communication system, the vehicle-mounted communication system further comprises a target terminal and a quantum key service center, the target terminal is a terminal which requests communication of the vehicle-mounted communication terminal, and the method can comprise the following steps:
When the vehicle-mounted communication terminal needs to communicate with the target terminal, the vehicle-mounted communication terminal sends a connection request to the target terminal. The target terminal can be any one of a cloud server, a mobile terminal, an intelligent transportation facility and a vehicle-mounted communication terminal.
For example, a user turns on the intelligent entertainment device through the vehicle-mounted communication terminal, and the vehicle-mounted communication terminal sends a connection request to a cloud server providing an intelligent entertainment function, wherein the request carries the requested content information.
And 102, receiving first equipment information of the target terminal returned by the target terminal.
The target terminal directly returns the requested content information to the in-vehicle communication terminal without performing encrypted communication.
In the embodiment of the invention, under the condition of encrypted communication, the target terminal returns the device information of the target terminal, namely the first device information, to the vehicle-mounted communication terminal, so that the vehicle-mounted communication terminal can perform the subsequent encryption processing flow.
The secure media can be a secure TF card, a U shield and the like, and the secure media is subjected to quantum key charging in a vehicle service center, such as a 4S store, and is inserted into the vehicle-mounted communication terminal. Each vehicle-mounted communication terminal corresponds to a safety medium.
After the vehicle-mounted communication terminal acquires the first device information, the vehicle-mounted communication terminal acquires a first negotiation quantum key from the security medium, acquires own second device information, and encrypts the first device information and the second device information by using the first negotiation quantum key, wherein the acquired encrypted information is negotiation encrypted information.
Therefore, the first device information and the second device information are encrypted by adopting the negotiation quantum key, so that the device information of both communication sides is encrypted, and the device information of both communication sides is ensured not to be stolen.
And 104, sending the negotiation encryption information to the quantum key service center to apply for a session quantum key at the vehicle-mounted communication terminal side.
The negotiated quantum key is not used for the final communication interaction. Before the vehicle-mounted communication terminal establishes communication with the cloud server, the respective negotiation quantum keys are used for interaction to generate a session quantum key, and the session quantum key is used for subsequent data interaction.
Therefore, the vehicle-mounted communication terminal sends the negotiation encryption information to the quantum key service center. And the quantum key service center analyzes the negotiation quantum key information, acquires the corresponding negotiation quantum key, decrypts the first equipment information, and inquires the registration authentication information of the first equipment. After the inquiry is passed, a quantum key generator is used for generating a first session quantum key and a first key element, and the first session quantum key and the first key element are encrypted and then returned to the vehicle-mounted communication terminal.
The quantum key service center generates a first session quantum key and a first key element based on the negotiation encryption information, the first session quantum key being used for encrypted communication on the vehicle-mounted communication terminal side. The first key element is for the target terminal to generate a second session quantum key.
The first key element and the second key element refer to data information which can be expanded to generate a quantum key, and can include a basic random number, a hash value algorithm to be expanded to generate and an encryption algorithm.
Specifically, after receiving the first key element, the target terminal applies for a second session quantum key and a second key element for communication to the sub-key service center based on the first key element.
And 106, carrying out encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
Specifically, during data interaction, the vehicle-mounted communication terminal encrypts data by using a first session quantum key and decrypts the data by using a second key element, and the target terminal encrypts the data by using the second session quantum key and decrypts the data by using the first key element.
In addition, after the data interaction is finished, the vehicle communication terminal and the target terminal destroy the first session quantum key and the second session quantum key respectively to prevent stealing.
In summary, in the embodiment of the present invention, the vehicle-mounted communication terminal sends the connection request to the target terminal; receiving first equipment information of a target terminal returned by the target terminal; acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal, and encrypting first equipment information and second equipment information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information; sending the negotiation encryption information to a quantum key service center to apply for a session quantum key at the vehicle-mounted communication terminal side; receiving a first session quantum key and a first key element generated by the quantum key service center based on negotiation encryption information, and sending the first key element to a target terminal, wherein the first key element is used for the target terminal to vector the quantum key service center to apply for a second session quantum key at the target terminal side; and carrying out encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element. The method and the device use the negotiation quantum key to encrypt the device information to obtain negotiation encryption information, apply for the session quantum key by the negotiation encryption information, and use the first session quantum key obtained by the application and the second session quantum key obtained by the target terminal to carry out data interaction. The security of the negotiation quantum key and the session quantum key is based on the quantum unmeasurable characteristic, and the quantum key is randomly generated during communication, so that the quantum key cannot be intercepted and cracked, and the security of communication between the vehicle and the outside is ensured.
In a possible implementation manner, before step 101, the method further includes:
step 201, obtaining a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal;
step 202, encrypting first registration information of the vehicle-mounted communication terminal by using the first negotiation quantum key, and sending the first registration information to the quantum key service center so as to perform registration authentication in the quantum key service center.
In step 201-step 202, the vehicle-mounted communication terminal and the target terminal both need to be registered in the quantum key service center in advance, the authentication can apply for the quantum key to carry out encrypted communication after passing, and the quantum key encrypted communication can be carried out only between the terminals authenticated by the quantum key service center.
During specific registration, the vehicle-mounted communication terminal acquires a first negotiation quantum key from the security medium in advance, encrypts registration information of the first negotiation quantum key by using the first negotiation quantum key, and sends the encrypted first registration information to the quantum key service center for registration authentication.
In one possible implementation, the storing a first negotiated quantum key in the secure medium, and the obtaining the first negotiated quantum key from the secure medium of the vehicle-mounted communication terminal includes:
step 1031, determining a quantum key state in the secure medium;
and 1032, acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal under the condition that the state of the quantum key is a normal state.
In steps 1031 to 1032, the quantum key information in the secure medium is consumed after each use, and the quantum key cannot be obtained in a state where the quantum key is exhausted. The charging of the quantum key may be online charging and offline charging. Online filling refers to online update filling, and offline filling refers to filling at a 4S store.
The quantum key state in the secure media can be queried at a remote key service center or displayed on an interface of the vehicle-mounted communication terminal. When the quantum key state is exhausted, the exhausted state can be prompted on an interface, and a user is reminded to fill.
When the state of the quantum key is normal, the normal state can be displayed on the interface, and when the state of the quantum key is determined to be the normal state, the vehicle-mounted communication terminal directly obtains the first negotiation quantum key from the security medium.
In a possible implementation, after step 1031, the method further includes:
and 1033, under the condition that the quantum key state is a depletion state, performing encrypted data interaction with the target terminal by using a common encryption algorithm.
In the embodiment of the present invention, when the quantum key state is the exhausted state, the quantum key cannot be used for communication, and in order to ensure smooth communication, a common encryption algorithm may be used for communication.
The common encryption algorithm refers to other algorithms than the quantum encryption algorithm, such as the RSA encryption algorithm.
In one possible implementation, step 106 includes:
step 1061, sending the first data encrypted by using the first session quantum key to the target terminal;
step 1062, receiving second data returned by the target terminal based on the content of the first data after the target terminal decrypts the first data based on the second key element; the second data is encrypted by using the second session quantum key;
step 1063, decrypting the second data by using the first key element to obtain the data content of the second data.
In steps 1061-1063, the in-vehicle communication terminal encrypts the first data using the first session quantum key, the target terminal decrypts the received first data using the first key element, and after generating the second data based on the content of the first data, the target terminal encrypts the second data using the second session quantum key and returns the second data to the in-vehicle communication terminal. The vehicle-mounted communication terminal decrypts the second data by using the second key element to obtain the data content of the second data.
Fig. 3 is a flowchart illustrating steps of a second vehicle encrypted communication method according to an embodiment of the present invention. The method is applied to a vehicle-mounted communication terminal of a vehicle-mounted communication system, the vehicle-mounted communication system further comprises a target terminal and a quantum key service center, the target terminal is a terminal which requests communication of the vehicle-mounted communication terminal, and the method comprises the following steps:
and 304, carrying out encrypted data interaction with the vehicle-mounted communication terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
In steps 301 to 304, the target terminal returns the device information of the target terminal, i.e. the first device information, to the vehicle-mounted communication terminal, so that the vehicle-mounted communication terminal performs the subsequent encryption processing flow. After the vehicle-mounted communication terminal acquires the first device information, the vehicle-mounted communication terminal acquires a first negotiation quantum key from the security medium, acquires own second device information, and encrypts the first device information and the second device information by using the first negotiation quantum key, wherein the acquired encrypted information is negotiation encrypted information.
And the vehicle-mounted communication terminal sends the negotiation encryption information to the quantum key service center. And the quantum key service center analyzes the negotiation quantum key information, acquires the corresponding negotiation quantum key, decrypts the first equipment information, and inquires the registration authentication information of the first equipment. After the inquiry is passed, a quantum key generator is used for generating a first session quantum key and a first key element, and the first session quantum key and the first key element are encrypted and then returned to the vehicle-mounted communication terminal.
The quantum key service center generates a first session quantum key and a first key element based on the negotiation encryption information.
After receiving the first key element, the target terminal applies for a second session quantum key and a second key element for communication based on the first key element and the vector sub-key service center.
After the target terminal obtains the second session quantum key and the second key element, the target terminal sends the second key element to the vehicle-mounted communication terminal, and therefore the vehicle-mounted communication terminal and the target terminal can perform encrypted data interaction.
Specifically, during data interaction, the vehicle-mounted communication terminal encrypts data by using a first session quantum key and decrypts the data by using a second key element, and the target terminal encrypts the data by using the second session quantum key and decrypts the data by using the first key element.
In a possible implementation manner, the target terminal is a cloud server, and before step 301, the method further includes:
step 401, obtaining a second negotiation quantum key which is pre-imported into the target terminal by the quantum key service center;
step 402, encrypting second registration information of the target terminal by using the second negotiation quantum key, and sending the second registration information to the quantum key service center, so as to perform registration authentication in the quantum key service center.
The vehicle-mounted communication terminal and the target terminal are required to be registered in the quantum key service center in advance, the authentication can be carried out by applying the quantum key for encrypted communication after passing the rear part, and the quantum key encrypted communication can be carried out only between the terminals authenticated by the quantum key service center.
And if the target terminal is the cloud server, the target terminal acquires a second negotiation quantum key which is pre-imported into the cloud server by the quantum key service center.
And if the target terminal is a vehicle-mounted communication terminal, a mobile terminal or intelligent transportation equipment and the like, acquiring a second negotiation quantum key from the safety medium.
Then, the second negotiation quantum key is used for encrypting the registration information of the quantum key, and the encrypted second registration information is sent to the quantum key service center for registration authentication.
In summary, in the embodiment of the present invention, in response to a connection request of the vehicle-mounted communication terminal, first device information of the target terminal is returned to the vehicle-mounted communication terminal, where the first device information is used for the vehicle-mounted communication terminal to apply for a first session quantum key and a first key element from the quantum key service center; receiving the first key element acquired by the vehicle-mounted communication terminal from the quantum key service center, and applying a second session quantum key and a second key element of the target terminal side to the quantum key service center by using the first key element; returning the second key element to the vehicle-mounted communication terminal; and carrying out encrypted data interaction with the vehicle-mounted communication terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element. The method and the device encrypt the device information by using the negotiation quantum key to obtain negotiation encryption information, apply for the session quantum key by using the negotiation encryption information, and perform data interaction by using the first session quantum key obtained by applying and the second session quantum key obtained by applying by the target terminal. The security of the negotiation quantum key and the session quantum key is based on the quantum unmeasurable characteristic, and the quantum key is randomly generated during communication, so that the quantum key cannot be intercepted and cracked, and the security of communication between a vehicle and the outside is ensured.
Fig. 4 is an encrypted communication sequence diagram of the vehicle-mounted communication terminal and the target terminal according to an embodiment of the present invention.
As shown in fig. 4, the vehicle-mounted communication terminal performs secure media self-binding first, and the target terminal also performs preset quantum key file self-binding. Then, both parties register and authenticate in the quantum key service center. After the registration and the authentication are passed, the encrypted data interaction can be carried out.
Specifically, the vehicle-mounted communication terminal transmits a connection request to the cloud server. The cloud server responds to the connection request of the vehicle-mounted communication terminal and returns the first equipment information of the target terminal to the vehicle-mounted communication terminal. The vehicle-mounted communication terminal receives first equipment information of the target terminal returned by the target terminal; the vehicle-mounted communication terminal acquires a first negotiation quantum key from a safety medium of the vehicle-mounted communication terminal, and encrypts first equipment information and second equipment information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information; the vehicle-mounted communication terminal sends the negotiation encryption information to a quantum key service center so as to apply for a session quantum key at the vehicle-mounted communication terminal side; the vehicle-mounted communication terminal receives a first session quantum key and a first key element which are generated by the quantum key service center based on negotiation encryption information, and sends the first key element to the target terminal; the target terminal receives a first key element acquired by the vehicle-mounted communication terminal from the quantum key service center, and applies for a second session quantum key and a second key element at the target terminal side by using the first key element to the quantum key service center. And the target terminal returns the second key element to the vehicle-mounted communication terminal.
And finally, the vehicle-mounted communication terminal and the target terminal perform encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
And after the communication is finished, the two ends destroy the session quantum key respectively.
Fig. 5 is a block diagram of a first encryption communication apparatus according to an embodiment of the present invention.
The device is applied to a target terminal of a vehicle-mounted communication system, the vehicle-mounted communication system further comprises a vehicle-mounted communication terminal and a quantum key service center, and the device 500 comprises:
a connection request sending module 501, configured to send a connection request to the target terminal;
a first device information receiving module 502, configured to receive first device information of the target terminal returned by the target terminal;
a first negotiation key obtaining module 503, configured to obtain a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal, and encrypt the first device information and the second device information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information;
a negotiation encryption information sending module 504, configured to send the negotiation encryption information to the quantum key service center to apply for a session quantum key at a vehicle-mounted communication terminal side;
a quantum key receiving module 505, configured to receive a first session quantum key and a first key element that are generated by the quantum key service center based on the negotiation encryption information, and send the first key element to the target terminal, where the first key element is used for the target terminal to apply for a second session quantum key and a second key element on the target terminal side from the quantum key service center;
a first interaction module 506, configured to perform encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element, and the second key element.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 6 is a block diagram of a first encryption communication apparatus according to an embodiment of the present invention.
The device is applied to a target terminal of a vehicle-mounted communication system, the vehicle-mounted communication system further comprises the vehicle-mounted communication terminal and a quantum key service center, and the target terminal is any one of a cloud server, a mobile terminal, an intelligent transportation facility and the vehicle-mounted communication terminal. The apparatus 600 comprises:
a first device information returning module 601, configured to return, in response to a connection request of the vehicle-mounted communication terminal, first device information of the target terminal to the vehicle-mounted communication terminal, where the first device information is used for the vehicle-mounted communication terminal to apply for a first session quantum key and a first key element from the quantum key service center;
a key element receiving module 602, configured to receive the first key element obtained by the vehicle-mounted communication terminal from the quantum key service center, and apply a second session quantum key and a second key element on the target terminal side to the quantum key service center by using the first key element;
a key element returning module 603, configured to return the second key element to the vehicle-mounted communication terminal;
a second interaction module 604, configured to perform encrypted data interaction with the vehicle-mounted communication terminal based on the first session quantum key, the second session quantum key, the first key element, and the second key element.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In yet another embodiment provided by the present invention, there is also provided an apparatus comprising a processor and a memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions, which is loaded and executed by the processor to implement the vehicle encrypted communication method described in the embodiments of the present invention.
In yet another embodiment provided by the present invention, there is also provided a computer readable storage medium having at least one instruction, at least one program, a set of codes, or a set of instructions stored therein, which is loaded and executed by a processor to implement the vehicle encrypted communication method described in the embodiment of the present invention.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (12)
1. A vehicle encryption communication method is applied to a vehicle-mounted communication terminal of a vehicle-mounted communication system, the vehicle-mounted communication system further comprises a target terminal and a quantum key service center, the target terminal is a terminal which requests communication for the vehicle-mounted communication terminal, and the method comprises the following steps:
sending a connection request to the target terminal;
receiving first equipment information of the target terminal returned by the target terminal;
acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal, and encrypting the first device information and second device information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information;
sending the negotiation encryption information to the quantum key service center to apply for a session quantum key at the vehicle-mounted communication terminal side;
receiving a first session quantum key and a first key element generated by the quantum key service center based on the negotiation encryption information, and sending the first key element to the target terminal, wherein the first key element is used for the target terminal to apply a second session quantum key and a second key element at the target terminal side to the quantum key service center;
and carrying out encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
2. The method of claim 1, further comprising, before sending the connection request to the target terminal:
acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal;
and encrypting first registration information of the vehicle-mounted communication terminal by using the first negotiation quantum key, and sending the first registration information to the quantum key service center so as to perform registration authentication in the quantum key service center.
3. The method of claim 2, wherein the storing the first negotiated quantum key in the secure medium, and wherein the obtaining the first negotiated quantum key from the secure medium of the in-vehicle communication terminal comprises:
determining a quantum key state in the secure media;
and under the condition that the quantum key state is a normal state, acquiring a first negotiation quantum key from a safety medium of the vehicle-mounted communication terminal.
4. The method of claim 3, further comprising, after determining the quantum key state in the secure media:
and under the condition that the quantum key state is a depletion state, carrying out encrypted data interaction with the target terminal by utilizing a common encryption algorithm.
5. The method according to any one of claims 1 to 4, wherein the performing encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element, and the second key element comprises:
sending first data encrypted by the first session quantum key to the target terminal;
receiving second data returned by the target terminal based on the content of the first data after the target terminal decrypts the first data based on the first key element; the second data is encrypted by using the second session quantum key;
and decrypting the second data by using the second key element to obtain the data content of the second data.
6. The method of any of claims 1-4, wherein the in-vehicle communication system further comprises a quantum key distribution device and a quantum key charger, the quantum key distribution device configured to distribute the first negotiated quantum key to the quantum key charger, the quantum key charger configured to charge the first negotiated quantum key to the secure media.
7. The vehicle encryption communication method is applied to a target terminal of a vehicle-mounted communication system, the vehicle-mounted communication system further comprises the vehicle-mounted communication terminal and a quantum key service center, the target terminal is any one of a cloud server, a mobile terminal, an intelligent transportation facility and the vehicle-mounted communication terminal, and the method comprises the following steps:
responding to a connection request of the vehicle-mounted communication terminal, returning first device information of the target terminal to the vehicle-mounted communication terminal, wherein the first device information is used for the vehicle-mounted communication terminal to apply for a first session quantum key and a first key element from the quantum key service center;
receiving the first key element acquired by the vehicle-mounted communication terminal from the quantum key service center, and applying a second session quantum key and a second key element of the target terminal side to the quantum key service center by using the first key element;
returning the second key element to the vehicle-mounted communication terminal;
and carrying out encrypted data interaction with the vehicle-mounted communication terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
8. The method according to claim 7, wherein the target terminal is a cloud server, and before returning the first device information of the target terminal to the vehicle-mounted communication terminal, the method further comprises:
acquiring a second negotiation quantum key which is pre-imported into the target terminal by the quantum key service center;
and encrypting second registration information of the target terminal by using the second negotiation quantum key, and sending the second registration information to the quantum key service center so as to perform registration authentication in the quantum key service center.
9. A vehicle encryption communication device is applied to a target terminal of a vehicle-mounted communication system, the vehicle-mounted communication system further comprises the vehicle-mounted communication terminal and a quantum key service center, and the device comprises:
a connection request sending module, configured to send a connection request to the target terminal;
the first equipment information receiving module is used for receiving the first equipment information of the target terminal returned by the target terminal;
the first negotiation key acquisition module is used for acquiring a first negotiation quantum key from a security medium of the vehicle-mounted communication terminal, and encrypting the first equipment information and the second equipment information of the vehicle-mounted communication terminal by using the first negotiation quantum key to obtain negotiation encryption information;
the negotiation encryption information sending module is used for sending the negotiation encryption information to the quantum key service center so as to apply for a session quantum key at the vehicle-mounted communication terminal side;
a quantum key receiving module, configured to receive a first session quantum key and a first key element that are generated by the quantum key service center based on the negotiation encryption information, and send the first key element to the target terminal, where the first key element is used for the target terminal to apply for a second session quantum key and a second key element on the target terminal side from the quantum key service center;
and the first interaction module is used for carrying out encrypted data interaction with the target terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
10. The vehicle encryption communication device is applied to a target terminal of a vehicle-mounted communication system, the vehicle-mounted communication system further comprises the vehicle-mounted communication terminal and a quantum key service center, the target terminal is any one of a cloud server, a mobile terminal, an intelligent transportation facility and the vehicle-mounted communication terminal, and the device comprises:
a first device information returning module, configured to return, in response to a connection request of the vehicle-mounted communication terminal, first device information of the target terminal to the vehicle-mounted communication terminal, where the first device information is used for the vehicle-mounted communication terminal to apply for a first session quantum key and a first key element from the quantum key service center;
a key element receiving module, configured to receive the first key element obtained by the vehicle-mounted communication terminal from the quantum key service center, and apply a second session quantum key and a second key element on the target terminal side to the quantum key service center by using the first key element;
a key element returning module, configured to return the second key element to the vehicle-mounted communication terminal;
and the second interaction module is used for carrying out encrypted data interaction with the vehicle-mounted communication terminal based on the first session quantum key, the second session quantum key, the first key element and the second key element.
11. An electronic device comprising a processor and a memory, the memory having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by the processor to implement the vehicle cryptographic communication method of any one of claims 1-8.
12. A computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions that is loaded and executed by a processor to implement the vehicle encrypted communication method according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211056715.XA CN115484025A (en) | 2022-08-31 | 2022-08-31 | Vehicle encrypted communication method and device |
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| CN202211056715.XA CN115484025A (en) | 2022-08-31 | 2022-08-31 | Vehicle encrypted communication method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115865350A (en) * | 2023-02-27 | 2023-03-28 | 合肥工业大学 | Car cloud service system based on quantum safety |
| CN117395001A (en) * | 2023-12-11 | 2024-01-12 | 合肥工业大学 | Internet of vehicles secure communication method and system based on quantum key chip |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115865350A (en) * | 2023-02-27 | 2023-03-28 | 合肥工业大学 | Car cloud service system based on quantum safety |
| CN115865350B (en) * | 2023-02-27 | 2023-05-05 | 合肥工业大学 | Vehicle cloud service system based on quantum security |
| CN117395001A (en) * | 2023-12-11 | 2024-01-12 | 合肥工业大学 | Internet of vehicles secure communication method and system based on quantum key chip |
| CN117395001B (en) * | 2023-12-11 | 2024-02-20 | 合肥工业大学 | Internet of vehicles secure communication method and system based on quantum key chip |
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