Intelligent networked vehicle quantum key update system and method

Abstract

The application discloses an intelligent networked automobile quantum key updating system, comprising a cloud end and a vehicle end; wherein the cloud end comprises a cloud end server, a cloud end master key pool and a cloud end backup key pool; the vehicle end comprises a vehicle end server, a vehicle end master key pool and a vehicle end backup key pool; the application further discloses an intelligent networked automobile quantum key updating method, which is realized based on the intelligent networked automobile quantum key updating system; the application discloses an intelligent networked automobile quantum key updating system and method, which automatically generates backup quantum keys in the process of encrypted communication through the cloud end and the vehicle end; when quantum key updating is needed, the backup quantum keys are used to update the quantum key sequence, so that the synchronous updating of the quantum keys between the cloud end and the vehicle end can be realized in time, the capacity and availability of the quantum keys are increased, and the application can be widely used in unmanned auxiliary systems, intelligent networked systems and air-ground terminal communication fields.

Description

Technical Field

[0001] This invention relates to the fields of unmanned systems and vehicle networking technology, specifically to a quantum key update system and method for intelligent connected vehicles. Background Technology

[0002] With the steady development of autonomous driving systems and the large-scale expansion of intelligent connected vehicles and the Internet of Vehicles (IoV), vehicle-to-cloud (V2V) communication is gradually being widely adopted. However, while bringing convenience, V2V communication also brings security risks. Currently, V2V communication mainly uses ordinary keys to encrypt data, but the security of ordinary keys relies on mathematical problems, and its security will decrease in the face of computers with powerful computing capabilities.

[0003] Based on the uncertainty principle and the no-cloning principle, using quantum key distribution for vehicle-to-cloud communication offers high security. However, because quantum key distribution is highly susceptible to environmental interference, the method of generating quantum keys between the vehicle and the cloud via quantum key distribution is unsuitable for high-speed vehicles. Furthermore, the vehicle environment is unlikely to support a stable quantum random number generator to produce quantum keys.

[0004] Currently, some vehicle-to-cloud communication solutions achieve this by pre-generating quantum keys and injecting them into the vehicle. However, the injected quantum keys cannot be updated in a timely manner. Over a long period of use, the number of available quantum keys will be insufficient, and re-injection is required when updating the keys. Summary of the Invention

[0005] To address the problem of the inability to update the quantum key in current vehicle-to-cloud communication solutions in a timely manner, this invention provides a quantum key update system and method for intelligent connected vehicles.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A quantum key update system for intelligent connected vehicles includes a cloud platform and a vehicle-side platform; wherein,

[0008] The cloud includes a cloud server, a cloud master key pool, and a cloud backup key pool;

[0009] The vehicle terminal includes a vehicle terminal server, a vehicle terminal master key pool, and a vehicle terminal backup key pool;

[0010] The cloud-based master key pool and the vehicle-side master key pool are each pre-configured with quantum key sequences;

[0011] During each encrypted communication process, the vehicle-mounted server is used to randomly select a first quantum key from the quantum key sequence; the cloud server is used to randomly select a second quantum key from the quantum key sequence; the vehicle-mounted server and the cloud server combine the first quantum key and the second quantum key respectively to generate an intermediate quantum key; and the second quantum key is XORed with the intermediate quantum key to generate a backup quantum key.

[0012] The cloud-based backup key pool is used to store backup quantum keys generated by the vehicle-side server;

[0013] The cloud-based backup key pool is used to store backup quantum keys generated by the cloud server;

[0014] When a quantum key update is required, the vehicle-mounted server and the cloud server update the quantum key sequence using the backup quantum key, respectively.

[0015] In the above scheme, a backup quantum key is automatically generated during encrypted communication between the cloud and the vehicle. When a quantum key update is required, the backup quantum key is used to update the quantum key sequence, thereby enabling timely synchronous updates of the quantum key between the cloud and the vehicle, increasing the capacity and availability of the quantum key.

[0016] Preferably, the cloud also includes a quantum random number generator and a quantum key injection device;

[0017] The quantum random number generator is used to generate N truly random numbers and send them sequentially to the cloud master key pool as an index for the quantum key sequence;

[0018] The quantum key filling device is used to sequentially fill the vehicle-side master key pool with N truly random numbers generated by the quantum random number generator as an index for the quantum key sequence.

[0019] Preferably, during an encrypted communication, the vehicle-side server sends the index of the first quantum key to the cloud server; the cloud server retrieves the first quantum key from the cloud master key pool based on the index of the first quantum key, and encrypts the index of the second quantum key using the first quantum key before sending it to the vehicle-side server; the vehicle-side server decrypts the second quantum key using the first quantum key to obtain the index of the second quantum key, and retrieves the second quantum key from the vehicle-side master key pool based on the index of the second quantum key; the vehicle-side server and the cloud server use the second quantum key as the encryption key for this encrypted communication.

[0020] Preferably, if both the first quantum key and the second quantum key have an even number of bits, then the first half of the bits of the first quantum key and the second half of the bits of the second quantum key are combined to generate the intermediate quantum key.

[0021] If the first quantum key and / or the second quantum key has an odd number of bits, then first add zeros to the last bit, and then combine the first half of the bits of the first quantum key and the second half of the bits of the second quantum key to generate an intermediate quantum key.

[0022] Preferably, when the number of backup quantum keys reaches a preset threshold Np, the vehicle-mounted server and the cloud server respectively replace the first Np quantum keys of the quantum key sequence with the Np backup quantum keys in sequence, thereby realizing quantum key update.

[0023] A quantum key update method for intelligent connected vehicles, based on the aforementioned intelligent connected vehicle quantum key update system, includes the following steps:

[0024] S1: Quantum key sequences are pre-configured in both the cloud and the vehicle.

[0025] S2: The vehicle and cloud terminals randomly select the first and second quantum keys for encrypted communication from the quantum key sequence, respectively;

[0026] S3: The cloud and the vehicle end combine the first quantum key and the second quantum key respectively to generate an intermediate quantum key;

[0027] S4: The cloud and the vehicle respectively XOR the second quantum key with the intermediate quantum key to generate a backup quantum key and store it;

[0028] S5: Determine whether the number of backup quantum keys has reached the preset threshold Np;

[0029] If so, proceed to step S6;

[0030] If not, return to step S2;

[0031] S6: The cloud and vehicle sides respectively use the backup quantum key to update the quantum key sequence.

[0032] Preferably, the index of the quantum key sequence is a true random number.

[0033] Preferably, step S2 further includes the following step:

[0034] S2.1: The vehicle sends the index of the first quantum key to the cloud;

[0035] S2.2: The cloud extracts the first quantum key based on the index of the first quantum key, and uses the first quantum key to encrypt the index of the second quantum key before sending it to the vehicle.

[0036] S2.3: The vehicle uses the first quantum key to decrypt and obtain the index of the second quantum key, and extracts the second quantum key according to the index of the second quantum key;

[0037] S2.4: The cloud and vehicle terminals confirm the use of the second quantum key as the encryption key for encrypted communication.

[0038] Preferably, in step S3, if both the first quantum key and the second quantum key have an even number of bits, then the first half of the bits of the first quantum key and the second half of the bits of the second quantum key are combined to generate an intermediate quantum key.

[0039] If the first quantum key and / or the second quantum key has an odd number of bits, then first add zeros to the last bit, and then combine the first half of the bits of the first quantum key and the second half of the bits of the second quantum key to generate an intermediate quantum key.

[0040] Preferably, step S6 specifically involves: the vehicle and the cloud respectively replacing the first Np quantum keys of the quantum key sequence with Np backup quantum keys in sequence, thereby realizing quantum key update.

[0041] Beneficial technical effects of the present invention:

[0042] This invention provides a quantum key update system and method for intelligent connected vehicles. It automatically generates a backup quantum key during encrypted communication between the cloud and the vehicle. When a quantum key update is required, the backup quantum key is used to update the quantum key sequence, thereby enabling timely synchronous updates of the quantum key between the cloud and the vehicle, increasing the capacity and availability of the quantum key. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the module connection of the present invention;

[0044] Figure 2 This is a flowchart illustrating the implementation steps of the technical solution of the present invention;

[0045] 11. Cloud server; 12. Cloud master key pool; 13. Cloud backup key pool; 14. Quantum random number generator; 15. Quantum key filling device; 21. Vehicle-side server; 22. Vehicle-side master key pool; 23. Vehicle-side backup key pool. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments. However, the scope of protection of this invention is not limited to the specific embodiments described below.

[0047] Example 1

[0048] like Figure 1 As shown, an intelligent connected vehicle quantum key update system includes a cloud platform and a vehicle-side platform; wherein,

[0049] The cloud includes a cloud server 11, a cloud master key pool 12, and a cloud backup key pool 13;

[0050] The vehicle terminal includes a vehicle terminal server 21, a vehicle terminal master key pool 22, and a vehicle terminal backup key pool 23;

[0051] The cloud-based master key pool 12 and the vehicle-side master key pool 22 are each pre-set with quantum key sequences;

[0052] During each encrypted communication process, the vehicle-side server 21 is used to randomly select a first quantum key from the quantum key sequence; the cloud server 11 is used to randomly select a second quantum key from the quantum key sequence; the vehicle-side server 21 and the cloud server 11 respectively combine the first quantum key and the second quantum key to generate an intermediate quantum key; and XOR the second quantum key with the intermediate quantum key to generate a backup quantum key.

[0053] The cloud-based backup key pool 13 is used to store backup quantum keys generated by the vehicle-side server 21;

[0054] The cloud-based backup key pool 13 is used to store backup quantum keys generated by the cloud server 11;

[0055] When a quantum key update is required, the vehicle-mounted server 21 and the cloud server 11 update the quantum key sequence using the backup quantum key, respectively.

[0056] In the specific implementation process, backup quantum keys are automatically generated during encrypted communication between the cloud and the vehicle. When quantum key updates are required, the backup quantum key is used to update the quantum key sequence, thereby enabling timely synchronous updates of quantum keys between the cloud and the vehicle, increasing the capacity and availability of quantum keys.

[0057] Example 2

[0058] A quantum key update system for intelligent connected vehicles includes a cloud platform and a vehicle-side platform; wherein,

[0059] The cloud includes a cloud server 11, a cloud master key pool 12, and a cloud backup key pool 13;

[0060] The vehicle terminal includes a vehicle terminal server 21, a vehicle terminal master key pool 22, and a vehicle terminal backup key pool 23;

[0061] The cloud-based master key pool 12 and the vehicle-side master key pool 22 are each pre-set with quantum key sequences;

[0062] More specifically, the cloud also includes a quantum random number generator 14 and a quantum key injection device 15;

[0063] The quantum random number generator 14 is used to generate N truly random numbers and send them sequentially to the cloud master key pool 12 as an index for the quantum key sequence;

[0064] The quantum key filling device 15 is used to sequentially fill the N truly random numbers generated by the quantum random number generator 14 into the vehicle-side master key pool 22 as an index for the quantum key sequence.

[0065] During each encrypted communication process, the vehicle-mounted server 21 is used to randomly select a first quantum key from the quantum key sequence; the cloud server 11 is used to randomly select a second quantum key from the quantum key sequence.

[0066] The vehicle-side server 21 sends the index of the first quantum key to the cloud server 11; the cloud server 11 retrieves the first quantum key from the cloud master key pool 12 according to the index of the first quantum key, and uses the first quantum key to encrypt the index of the second quantum key before sending it to the vehicle-side server 21; the vehicle-side server 21 uses the first quantum key to decrypt and obtain the index of the second quantum key, and retrieves the second quantum key from the vehicle-side master key pool 22 according to the index of the second quantum key; the vehicle-side server 21 and the cloud server 11 use the second quantum key as the encryption key for this encrypted communication;

[0067] The vehicle-side server 21 and the cloud server 11 respectively combine the first quantum key and the second quantum key to generate an intermediate quantum key; and XOR the second quantum key with the intermediate quantum key to generate a backup quantum key.

[0068] More specifically, if both the first quantum key and the second quantum key have an even number of bits, then the first half of the bits of the first quantum key and the second half of the bits of the second quantum key are combined to generate the intermediate quantum key.

[0069] If the first quantum key and / or the second quantum key has an odd number of bits, then first add zeros to the last bit, and then combine the first half of the bits of the first quantum key and the second half of the bits of the second quantum key to generate an intermediate quantum key.

[0070] The cloud-based backup key pool 13 is used to store backup quantum keys generated by the vehicle-side server 21;

[0071] The cloud-based backup key pool 13 is used to store backup quantum keys generated by the cloud server 11;

[0072] When a quantum key update is required, the vehicle-mounted server 21 and the cloud server 11 update the quantum key sequence using the backup quantum key, respectively.

[0073] More specifically, when the number of backup quantum keys reaches a preset threshold Np, the vehicle-mounted server 21 and the cloud server 11 respectively replace the first Np quantum keys of the quantum key sequence with Np backup quantum keys in sequence, thereby realizing quantum key update.

[0074] In the specific implementation process, after the quantum key is updated, the cloud backup key pool 13 and the vehicle-side backup key pool 23 are cleared respectively.

[0075] Example 3

[0076] like Figure 2 As shown, a quantum key update method for intelligent connected vehicles, implemented based on the aforementioned intelligent connected vehicle quantum key update system, includes the following steps:

[0077] S1: Quantum key sequences are pre-configured in both the cloud and the vehicle.

[0078] S2: The vehicle and cloud terminals randomly select the first and second quantum keys for encrypted communication from the quantum key sequence, respectively;

[0079] S3: The cloud and the vehicle end combine the first quantum key and the second quantum key respectively to generate an intermediate quantum key;

[0080] S4: The cloud and the vehicle respectively XOR the second quantum key with the intermediate quantum key to generate a backup quantum key and store it;

[0081] S5: Determine whether the number of backup quantum keys has reached the preset threshold Np;

[0082] If so, proceed to step S6;

[0083] If not, return to step S2;

[0084] S6: The cloud and vehicle sides respectively use the backup quantum key to update the quantum key sequence.

[0085] Example 4

[0086] A quantum key update method for intelligent connected vehicles, based on the aforementioned intelligent connected vehicle quantum key update system, includes the following steps:

[0087] S1: Quantum key sequences are pre-configured in both the cloud and the vehicle.

[0088] More specifically, the index of the quantum key sequence is a truly random number.

[0089] S2: The vehicle and cloud terminals randomly select the first and second quantum keys for encrypted communication from the quantum key sequence, respectively;

[0090] More specifically, step S2 also includes the following steps:

[0091] S2.1: The vehicle sends the index of the first quantum key to the cloud;

[0092] S2.2: The cloud extracts the first quantum key based on the index of the first quantum key, and uses the first quantum key to encrypt the index of the second quantum key before sending it to the vehicle.

[0093] S2.3: The vehicle uses the first quantum key to decrypt and obtain the index of the second quantum key, and extracts the second quantum key according to the index of the second quantum key;

[0094] S2.4: The cloud and vehicle terminals confirm the use of the second quantum key as the encryption key for encrypted communication.

[0095] S3: The cloud and the vehicle end combine the first quantum key and the second quantum key respectively to generate an intermediate quantum key;

[0096] More specifically, in step S3, if both the first quantum key and the second quantum key have an even number of bits, then the first half of the bits of the first quantum key and the second half of the bits of the second quantum key are combined to generate an intermediate quantum key.

[0097] If the first quantum key and / or the second quantum key has an odd number of bits, then first add zeros to the last bit, and then combine the first half of the bits of the first quantum key and the second half of the bits of the second quantum key to generate an intermediate quantum key.

[0098] S4: The cloud and the vehicle respectively XOR the second quantum key with the intermediate quantum key to generate a backup quantum key and store it;

[0099] S5: Determine whether the number of backup quantum keys has reached the preset threshold Np;

[0100] If so, proceed to step S6;

[0101] If not, return to step S2;

[0102] S6: The cloud and vehicle sides respectively use the backup quantum key to update the quantum key sequence.

[0103] More specifically, step S6 involves the vehicle and cloud terminals replacing the first Np quantum keys of the quantum key sequence with Np backup quantum keys in sequence, thereby achieving quantum key update.

[0104] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A quantum key update system for intelligent connected vehicles, characterized in that, Including cloud and vehicle terminals; among them, The cloud includes a cloud server, a cloud master key pool, and a cloud backup key pool; The vehicle terminal includes a vehicle terminal server, a vehicle terminal master key pool, and a vehicle terminal backup key pool; The cloud-based master key pool and the vehicle-side master key pool are each pre-configured with quantum key sequences; During each encrypted communication process, the vehicle-mounted server is used to randomly select a first quantum key from the quantum key sequence; the cloud server is used to randomly select a second quantum key from the quantum key sequence; the vehicle-mounted server and the cloud server combine the first quantum key and the second quantum key respectively to generate an intermediate quantum key; and the second quantum key is XORed with the intermediate quantum key to generate a backup quantum key. The cloud-based backup key pool is used to store backup quantum keys generated by the vehicle-side server; The cloud-based backup key pool is used to store backup quantum keys generated by the cloud server; When a quantum key update is required, the vehicle-mounted server and the cloud server update the quantum key sequence using the backup quantum key, respectively.

2. The intelligent connected vehicle quantum key update system according to claim 1, characterized in that, The cloud also includes a quantum random number generator and a quantum key injection device; The quantum random number generator is used to generate N truly random numbers and send them sequentially to the cloud master key pool as an index for the quantum key sequence; The quantum key filling device is used to sequentially fill the vehicle-side master key pool with N truly random numbers generated by the quantum random number generator as an index for the quantum key sequence.

3. The intelligent connected vehicle quantum key update system according to claim 2, characterized in that, During an encrypted communication, the vehicle-mounted server sends the index of the first quantum key to the cloud server; The cloud server retrieves the first quantum key from the cloud master key pool based on the index of the first quantum key, and encrypts the index of the second quantum key using the first quantum key before sending it to the vehicle-side server; the vehicle-side server decrypts the second quantum key using the first quantum key to obtain the index of the second quantum key, and retrieves the second quantum key from the vehicle-side master key pool based on the index of the second quantum key; the vehicle-side server and the cloud server use the second quantum key as the encryption key for this encrypted communication.

4. The intelligent connected vehicle quantum key update system according to claim 1, characterized in that, If both the first quantum key and the second quantum key have an even number of bits, then the first half of the bits of the first quantum key and the second half of the bits of the second quantum key are combined to generate the intermediate quantum key. If the first quantum key and / or the second quantum key has an odd number of bits, then first add zeros to the last bit, and then combine the first half of the bits of the first quantum key and the second half of the bits of the second quantum key to generate an intermediate quantum key.

5. The intelligent connected vehicle quantum key update system according to claim 1, characterized in that, When the number of backup quantum keys reaches a preset threshold Np, the vehicle-mounted server and the cloud server respectively replace the first Np quantum keys in the quantum key sequence with Np backup quantum keys in sequence, thereby realizing quantum key update.

6. A quantum key update method for intelligent connected vehicles, characterized in that, Includes the following steps: S1: Quantum key sequences are pre-configured in both the cloud and the vehicle. S2: The vehicle and cloud terminals randomly select the first and second quantum keys for encrypted communication from the quantum key sequence, respectively; S3: The cloud and the vehicle end combine the first quantum key and the second quantum key respectively to generate an intermediate quantum key; S4: The cloud and the vehicle respectively XOR the second quantum key with the intermediate quantum key to generate a backup quantum key and store it; S5: Determine whether the number of backup quantum keys has reached the preset threshold Np; If so, proceed to step S6; If not, return to step S2; S6: The cloud and vehicle sides respectively use the backup quantum key to update the quantum key sequence.

7. The method for updating quantum keys for intelligent connected vehicles according to claim 6, characterized in that, The index of the quantum key sequence is a truly random number.

8. The method for updating quantum keys for intelligent connected vehicles according to claim 6, characterized in that, Step S2 also includes the following steps: S2.1: The vehicle sends the index of the first quantum key to the cloud; S2.2: The cloud extracts the first quantum key based on the index of the first quantum key, and uses the first quantum key to encrypt the index of the second quantum key before sending it to the vehicle. S2.3: The vehicle uses the first quantum key to decrypt and obtain the index of the second quantum key, and extracts the second quantum key according to the index of the second quantum key; S2.4: The cloud and vehicle terminals confirm the use of the second quantum key as the encryption key for encrypted communication.

9. A quantum key update method for intelligent connected vehicles according to claim 6, characterized in that, In step S3, if both the first quantum key and the second quantum key have an even number of bits, then the first half of the bits of the first quantum key and the second half of the bits of the second quantum key are combined to generate an intermediate quantum key. If the first quantum key and / or the second quantum key has an odd number of bits, then first add zeros to the last bit, and then combine the first half of the bits of the first quantum key and the second half of the bits of the second quantum key to generate an intermediate quantum key.

10. A quantum key update method for intelligent connected vehicles according to claim 6, characterized in that, Step S6 specifically involves the vehicle and cloud terminals replacing the first Np quantum keys of the quantum key sequence with Np backup quantum keys in sequence, thereby achieving quantum key update.

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