CN115150144A - Vehicle start control method and system for remote control parking system, electronic device and storage medium - Google Patents
Vehicle start control method and system for remote control parking system, electronic device and storage medium Download PDFInfo
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- 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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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/0011—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement
- G05D1/0022—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement characterised by the communication link
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- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/724098—Interfacing with an on-board device of a vehicle
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- H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/72415—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories for remote control of appliances
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Abstract
The invention provides a vehicle starting control method and system for a remote control parking system, electronic equipment and a storage medium, and relates to the field of automobiles. The method comprises the following steps: a special encryption protocol is added between BLE and BCM, and a DES algorithm, namely a data encryption standard, is combined to ensure that BCM and BLE carry out authentication and authentication, mutually confirm the legality of the identities of the two parties and ensure the safety of the whole vehicle starting process. According to the scheme provided by the invention, in the whole remote control parking process, especially under the starting working condition, each link needs to ensure certain safety due to the fact that the related interaction link is long; after the encryption protocol is added between the BCM and the BLE, the safety in the starting process can be greatly improved, the risk of malicious attack in the starting process of the vehicle is reduced, and the experience of controlling the vehicle through the APP by a user is ensured.
Description
Technical Field
The invention belongs to the field of automobiles, and particularly relates to a vehicle starting control method and system for a remote control parking system, electronic equipment and a storage medium.
Background
Remote control parking is to control the parking in and out of a vehicle by controlling a remote control device, and the technology is applied to mass production of more and more middle-high-end vehicle types at present; the mobile phone is mainly applied to certain narrow parking spaces and in scenes that a driver cannot enter a vehicle by opening a vehicle door, so that the function of parking out of the parking spaces by controlling the mobile phone is derived; and starting a technical application scene of the vehicle by operating the mobile phone APP. The remote parking initiation process is illustrated in fig. 2.
Definition of key terms:
user side cell-phone APP: the user can connect and bind BLE bluetooth module on the vehicle through the bluetooth protocol of the mobile phone after registering and logging in APP, can pass through car end bluetooth module control vehicle after the input password.
BLE: the vehicle end Bluetooth module, the bridge of cell-phone APP and vehicle end communication, cell-phone and vehicle end Bluetooth module pass through the bluetooth channel connection and transmit information.
BCM: and the vehicle body controller controls the state switching of the power supply of the whole vehicle, and when the power supply of the vehicle is switched to ON power and meets the starting condition, the BCM sends a request for starting the engine to the EMS, so that the vehicle is ignited successfully.
IDDC: and the intelligent driving area controller collects the information of a vehicle power system and controls the functions of parking in and parking out of the vehicle position by combining information such as a camera outside the vehicle, a radar sensor and the like after the vehicle is started.
EMS: collecting information such as the rotating speed and the water temperature of the engine and monitoring faults through various sensors arranged on the engine; and receiving an instruction of the keyless starting system to control the starting or the flameout of the engine.
Prior art of the technical scheme is as follows:
the user clicks a starting button in the mobile phone APP, when the BLE receives a starting request sent by the mobile phone, the BLE sends the starting request to the BCM through the CAN network signal, the BCM forms a ciphertext after encryption and sends the ciphertext to the EMS to be authenticated, the EMS starts the engine, and the IDDC receives the vehicle to finish the automatic parking-out function of the vehicle after the start is successful. According to the scheme, the link is long, and if the transmission message between BLE and BCM is plaintext, the risk of malicious cracking exists. The information transmission path for the remote parking start process is shown in fig. 3.
The prior art has the following defects:
although there are anti-theft check processes between the mobile phone APP and BLE and between the BCM and the EMS, detailed descriptions are omitted here. But the BLE and the BCM are transmitted in plaintext, no anti-theft check link exists, and the vehicle still has the theft risk.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a vehicle start control method, system, electronic device and storage medium for a remote control parking system, so as to solve the above technical problems.
The invention discloses a vehicle starting control method for a remote control parking system in a first aspect, which comprises the following steps:
step one, after a BLE receives remote control start sent by an APP, the BLE sends a CAN network signal S1 to a BCM;
step two, after the BCM receives the BLE S1 signal and judges that the signal is a remote control starting request, a BCM request message S2 is synthesized;
step three, after receiving the BCM request message S2, the BLE extracts a remote control starting request state flag bit in the request message S2, and if the remote control starting state flag bit is judged to be 1, the BLE judges the position of the mobile phone relative to the vehicle according to a Bluetooth antenna installed on the vehicle; after the position of the mobile phone relative to the vehicle is extracted, the BLE extracts an authentication random number in the request message S2, and then position information of the mobile phone relative to the vehicle, the authentication random number and the SC code are synthesized and encrypted to obtain a BLE response ciphertext S3;
step four, the BCM receives a BLE response ciphertext S3 and decrypts the BLE response ciphertext S3; and checking the SC code and the authentication random number, if the SC code and the authentication random number are both successfully checked, extracting the position information of the mobile phone relative to the vehicle for logic judgment: if the extracted position information of the mobile phone relative to the vehicle is reasonable in BCM, the BLE and the BCM are successfully verified, meanwhile, the BCM sends a network signal S4 which is successfully verified to the BLE, and otherwise, the verification fails;
and step five, after the BCM is successfully verified, sending an engine starting request to the EMS until the vehicle is started and carrying out remote control parking related actions.
According to the method of the first aspect of the present invention, in the second step, the BCM request packet S2 is 64 bits, that is, 8 bytes;
wherein byte0 of S2 is the state of the remote control starting request; byte2 of the S2 is an authentication random number which is an 8-bit random number; the bytes 1, 3, 4, 5, 6, and 7 of the other S2 are random numbers.
According to the method of the first aspect of the present invention, in the second step, bit4 of byte0 of S2 is a remote control activation status flag bit.
According to the method of the first aspect of the present invention, in the third step, the method for obtaining the BLE response cryptogram S3 by re-synthesizing and encrypting the position information of the mobile phone relative to the vehicle, the authentication random number, and the SC code includes:
position information of the mobile phone relative to the vehicle the authentication random number and the SC code are combined into 64-bit plaintext;
and then encrypting the plaintext by using a secret key SK through a DES16 algorithm to obtain a BLE response ciphertext S3.
According to the method of the first aspect of the present invention, in the third step, the method for combining the position information of the mobile phone relative to the vehicle, the authentication random number and the SC code into a 64-bit plaintext includes:
taking the position information of the mobile phone relative to the vehicle as byte0 of a 64-bit plaintext;
the authentication random number is used as byte3 of 64-bit plaintext;
byte1 and byte2 of 64-bit plaintext are random numbers, but are not used as random numbers for authentication with BCM;
the SC code is 32 bits, and is byte4, byte5, byte6, and byte7 of 64 bits of plaintext.
According to the method of the first aspect of the present invention, in the third step, bit0, bit1 and bit2 of byte0 in 64 bits of plaintext are position information of the mobile phone relative to the vehicle.
According to the method of the first aspect of the present invention, in the third step, the key SK is 64 bits;
in the fourth step, the method for decrypting the BLE response cryptogram S3 includes:
and decrypting the BLE response ciphertext S3 by using the secret key SK through a DES16 algorithm to obtain a BLE plaintext.
In a second aspect of the present invention, there is disclosed a vehicle start control system for a remote controlled parking system, the system comprising:
the device comprises a first processing module, a second processing module and a controller, wherein the first processing module is configured that BLE sends a CAN network signal S1 to BCM after the BLE receives remote control starting sent by APP;
the second processing module is configured to synthesize a BCM request message S2 after the BCM receives the S1 signal of BLE and judges that the signal is a remote control start request;
the third processing module is configured to extract the remote control starting request state flag bit in the request message S2 after the BLE receives the BCM request message S2, and if the remote control starting state flag bit is judged to be 1, the BLE judges the position of the mobile phone relative to the vehicle according to a bluetooth antenna installed on the vehicle; after the position of the mobile phone relative to the vehicle is extracted, the BLE extracts an authentication random number in the request message S2, and then position information of the mobile phone relative to the vehicle, the authentication random number and the SC code are synthesized and encrypted to obtain a BLE response ciphertext S3;
a fourth processing module, configured to receive a BLE response ciphertext S3 and decrypt the BLE response ciphertext S3 by the BCM; and checking the SC code and the authentication random number, if the SC code and the authentication random number are both successfully checked, extracting the position information of the mobile phone relative to the vehicle for logic judgment: if the extracted position information of the mobile phone relative to the vehicle is reasonable in BCM, the BLE and the BCM are successfully verified, meanwhile, the BCM sends a network signal S4 which is successfully verified to the BLE, and otherwise, the verification fails;
and the fifth processing module is configured to send an engine starting request to the EMS after the BCM is successfully verified until the vehicle is started and remote control parking related actions are carried out.
A third aspect of the invention discloses an electronic device. The electronic device includes a memory storing a computer program and a processor implementing the steps of a vehicle start control method for a remote-controlled parking system according to any one of the first aspect of the present disclosure when the processor executes the computer program.
A fourth aspect of the invention discloses a computer-readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps in a vehicle start-up control method for a remote-controlled parking system according to any one of the first aspects of the present disclosure.
According to the scheme provided by the invention, in the whole remote control parking process, especially under the starting working condition, each link needs to ensure certain safety due to the fact that the related interactive link is long; after the encryption protocol is added between the BCM and the BLE, the safety in the starting process can be greatly improved, the risk of malicious attack in the starting process of the vehicle is reduced, and the experience of controlling the vehicle through the APP by a user is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a vehicle start control method for a remote controlled parking system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a remote parking start process according to the background art;
fig. 3 is a schematic diagram of an information transmission path in a remote parking start process according to the background art;
figure 4 is a schematic diagram of a BLE response ciphertext S3 obtained by encrypting a plaintext through a DES16 algorithm using a key SK according to an embodiment of the present invention;
fig. 5 is a schematic diagram of decrypting BLE response ciphertext S3 by using a DES16 algorithm using a secret key SK to obtain BLE plaintext according to an embodiment of the present invention;
fig. 6 is a block diagram of a vehicle start control system for a remote controlled parking system according to an embodiment of the present invention;
fig. 7 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A first aspect of the invention discloses a vehicle start control method for a remote controlled parking system. Fig. 1 is a flowchart of a vehicle start control method for a remote controlled parking system according to an embodiment of the present invention, as shown in fig. 1, the method including:
step one, after BLE receives remote control starting sent by an APP, the BLE sends a CAN network signal S1 to a BCM;
step two, after the BCM receives the BLE S1 signal and judges that the signal is a remote control starting request, a BCM request message S2 is synthesized;
step three, after receiving the BCM request message S2, the BLE extracts a remote control starting request state flag bit in the request message S2, and if the remote control starting state flag bit is judged to be 1, the BLE judges the position of the mobile phone relative to the vehicle according to a Bluetooth antenna installed on the vehicle; after the position of the mobile phone relative to the vehicle is extracted, the BLE extracts an authentication random number in the request message S2, and then position information of the mobile phone relative to the vehicle, the authentication random number and the SC code are synthesized and encrypted to obtain a BLE response ciphertext S3;
step four, the BCM receives a BLE response ciphertext S3 and decrypts the BLE response ciphertext S3; and checking the SC code and the authentication random number, if the SC code and the authentication random number are checked successfully, extracting the position information of the mobile phone relative to the vehicle for logic judgment: if the extracted position information of the mobile phone relative to the vehicle is considered reasonable by the BCM, the BLE and the BCM are successfully verified, meanwhile, the BCM sends a network signal S4 which is successfully verified to the BLE, and otherwise, the verification fails;
and step five, after the BCM is successfully verified, sending an engine starting request to the EMS until the vehicle is started and carrying out remote control parking related actions.
In the first step, after the BLE receives the remote control start sent by the APP, the BLE sends a CAN network signal S1 to the BCM.
Specifically, table 1 shows that BLE transmits a CAN network signal S1 to BCM after receiving remote control start transmitted by APP.
TABLE 1
| BLE sends remote control starting request signal S1 to BCM |
In step two, after the BCM receives the BLE S1 signal and determines that the request is a remote control start request, a BCM request message S2 is synthesized.
In some embodiments, in the second step, the BCM request packet S2 has 64 bits, that is, 8 bytes;
wherein byte0 of S2 is the state of the remote control starting request; byte2 of the S2 is an authentication random number which is an 8-bit random number; the bytes 1, 3, 4, 5, 6, and 7 of the other S2 are random numbers.
And bit4 of byte0 of the S2 is a remote control starting state flag bit.
Specifically, after the BCM receives an S1 signal of BLE and determines that the signal is a remote control start request, a BCM request message S2 is synthesized; the BCM request message S2 is 64 bits, namely 8 bytes;
wherein byte0 of S2 is the state of the remote control starting request; byte2 of the S2 is an authentication random number which is an 8-bit random number; the bytes 1, 3, 4, 5, 6 and 7 of the other S2 are random numbers, as shown in Table 2.
TABLE 2
Bit4 of byte0 of S2 is a remote control start state flag bit, as shown in table 3.
TABLE 3
After receiving the BCM request message S2, the BLE extracts the remote start request state flag bit in the request message S2, and if the remote start request state flag bit is judged to be 1, the BLE judges the position of the mobile phone relative to the vehicle according to a bluetooth antenna installed on the vehicle; after the position of the mobile phone relative to the vehicle is extracted, the BLE extracts the authentication random number in the request message S2, and then the position information of the mobile phone relative to the vehicle, the authentication random number and the SC code are synthesized and encrypted to obtain a BLE response ciphertext S3.
In some embodiments, in step three, the method for synthesizing and encrypting the position information of the mobile phone relative to the vehicle, the authentication random number, and the SC code to obtain the BLE response cryptogram S3 includes:
combining the position information of the mobile phone relative to the vehicle, the authentication random number and the SC code into a 64-bit plaintext;
and then encrypting the plaintext by using a secret key SK through a DES16 algorithm to obtain a BLE response ciphertext S3.
The method for combining the position information of the mobile phone relative to the vehicle, the authentication random number and the SC code into a 64-bit plaintext comprises the following steps:
taking the position information of the mobile phone relative to the vehicle as byte0 of a 64-bit plaintext;
the authentication random number is used as byte3 of 64-bit plaintext;
in the 64-bit plaintext of signal S3: the byte1/2/3 is all random numbers, but only the byte3 is extracted as the random number used for authentication with the BCM, and the byte1 and the byte2 in 64-bit plain text are also random numbers but not used as the random numbers used for authentication with the BCM.
The SC code is 32 bits, byte4, byte5, byte6, and byte7 of 64 bits of plaintext.
And bit0, bit1 and bit2 of byte0 of the 64-bit plaintext are position information of the mobile phone relative to the vehicle.
The key SK is 64 bits.
Specifically, the BLE extracts a remote control starting request state flag bit in the request message S2 after receiving the BCM request message S2, and if the remote control starting state flag bit is judged to be 1, the BLE judges the position of the mobile phone relative to the vehicle according to a bluetooth antenna installed on the vehicle, and currently, in terms of a remote control parking function, it is a common saying that an illegal parking area is formed when the mobile phone is inside the vehicle or outside the vehicle by 6 m; after extracting the position of the mobile phone relative to the vehicle, the BLE extracts the authentication random number in the request message S2, and then, combining the position information of the mobile phone relative to the vehicle, the authentication random number and the SC code into a 64-bit plaintext; the plaintext is then encrypted using a 64-bit key SK to obtain BLE response ciphertext S3 using the DES16 algorithm, as shown in fig. 4.
As shown in table 4, the location information of the mobile phone with respect to the vehicle is byte0 in a 64-bit plaintext;
the authentication random number is used as byte3 of 64-bit plaintext;
byte1 and byte2 of a 64-bit plaintext are random numbers, but are not used as random numbers for authentication with BCM; byte3 uses a random number as authentication.
The SC code is 32 bits, and is byte4, byte5, byte6, and byte7 of 64 bits of plaintext.
Bit0, bit1 and bit2 of byte0 in 64 bits of plaintext are position information of the mobile phone relative to the vehicle, as shown in table 5.
TABLE 4
TABLE 5
In step four, the BCM receives the BLE response ciphertext S3 and decrypts the BLE response ciphertext S3; and checking the SC code and the authentication random number, if the SC code and the authentication random number are both successfully checked, extracting the position information of the mobile phone relative to the vehicle for logic judgment: if the extracted position information of the mobile phone relative to the vehicle is reasonable as BCM, the BLE and the BCM are successfully verified, meanwhile, the BCM sends a network signal S4 which is successfully verified to the BLE, and otherwise, the verification fails.
In some embodiments, in the fourth step, the method of decrypting the BLE response cryptogram S3 includes:
and decrypting the BLE response ciphertext S3 by using the secret key SK through a DES16 algorithm to obtain a BLE plaintext.
Specifically, the BCM receives a BLE response ciphertext S3, decrypts the BLE response ciphertext S3 through a DES16 algorithm by using a secret key SK, and obtains a BLE plaintext, as shown in fig. 5; and checking the SC code and the authentication random number, if the SC code and the authentication random number are checked successfully, extracting the position information of the mobile phone relative to the vehicle for logic judgment: if the extracted position information of the mobile phone relative to the vehicle is deemed reasonable by the BCM, the BLE and the BCM are successfully verified, and meanwhile, the BCM sends a network signal S4 with successful verification to the BLE, as shown in the table 6, otherwise, the verification fails.
TABLE 6
| If the verification is successful, the BCM sends a network signal S4 to the BLE |
Some of the above parameters are explained as shown in table 7:
TABLE 7
In summary, the scheme provided by the invention can ensure certain safety of each link due to the long interaction link involved in the whole remote control parking process, especially under the starting working condition; after the encryption protocol is added between the BCM and the BLE, the safety in the starting process can be greatly improved, the risk of malicious attack in the starting process of the vehicle is reduced, and the experience of controlling the vehicle through the APP by a user is ensured.
In a second aspect of the invention, a vehicle start control system for a remote controlled parking system is disclosed. Fig. 6 is a block diagram of a vehicle start control system for a remote controlled parking system according to an embodiment of the present invention; as shown in fig. 6, the system 100 includes:
a first processing module 101, configured to send a CAN network signal S1 to a BCM after BLE receives remote control initiation sent by an APP;
the second processing module 102 is configured to, after the BCM receives the S1 signal of BLE and determines that the signal is a remote control start request, synthesize a BCM request packet S2;
a third processing module 103, configured to, after receiving the BCM request message S2, extract a remote start request state flag bit in the request message S2, and if it is determined that the remote start state flag bit is 1, determine, by the BLE, a position of the mobile phone relative to the vehicle according to a bluetooth antenna installed on the vehicle; after the position of the mobile phone relative to the vehicle is extracted, the BLE extracts an authentication random number in the request message S2, and then position information of the mobile phone relative to the vehicle, the authentication random number and the SC code are synthesized and encrypted to obtain a BLE response ciphertext S3;
a fourth processing module 104, configured to receive a BLE response ciphertext S3 and decrypt the BLE response ciphertext S3 by the BCM; and checking the SC code and the authentication random number, if the SC code and the authentication random number are checked successfully, extracting the position information of the mobile phone relative to the vehicle for logic judgment: if the extracted position information of the mobile phone relative to the vehicle is reasonable in BCM, the BLE and the BCM are successfully verified, meanwhile, the BCM sends a network signal S4 which is successfully verified to the BLE, and otherwise, the verification fails;
the fifth processing module 105 is configured to send an engine start request to the EMS after the BCM verification is successful until the vehicle is started and performs remote parking related actions.
A third aspect of the invention discloses an electronic device. The electronic device comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the steps of the vehicle starting control method for the remote control parking system in any one of the first aspect of the disclosure.
Fig. 7 is a block diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 7, the electronic device includes a processor, a memory, a communication interface, a display screen, and an input device, which are connected by a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the electronic device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, near Field Communication (NFC) or other technologies. The display screen of the electronic equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the electronic equipment, an external keyboard, a touch pad or a mouse and the like.
It will be understood by those skilled in the art that the structure shown in fig. 7 is only a partial block diagram related to the technical solution of the present disclosure, and does not constitute a limitation of the electronic device to which the solution of the present application is applied, and a specific electronic device may include more or less components than those shown in the drawings, or combine some components, or have a different arrangement of components.
A fourth aspect of the invention discloses a computer-readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps in a vehicle start-up control method for a remote-controlled parking system according to any one of the first aspects of the disclosure.
It should be noted that the technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered. The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A vehicle start control method for a remote controlled parking system, the method comprising:
step one, after a BLE receives remote control start sent by an APP, the BLE sends a CAN network signal S1 to a BCM;
step two, after the BCM receives the BLE S1 signal and judges that the signal is a remote control starting request, a BCM request message S2 is synthesized;
step three, after receiving the BCM request message S2, the BLE extracts a remote control starting request state flag bit in the request message S2, and if the remote control starting state flag bit is judged to be 1, the BLE judges the position of the mobile phone relative to the vehicle according to a Bluetooth antenna installed on the vehicle; after the position of the mobile phone relative to the vehicle is extracted, the BLE extracts an authentication random number in the request message S2, and then position information of the mobile phone relative to the vehicle, the authentication random number and the SC code are synthesized and encrypted to obtain a BLE response ciphertext S3;
step four, the BCM receives a BLE response ciphertext S3 and decrypts the BLE response ciphertext S3; and checking the SC code and the authentication random number, if the SC code and the authentication random number are checked successfully, extracting the position information of the mobile phone relative to the vehicle for logic judgment: if the extracted position information of the mobile phone relative to the vehicle is reasonable in BCM, the BLE and the BCM are successfully verified, meanwhile, the BCM sends a network signal S4 which is successfully verified to the BLE, and otherwise, the verification fails;
and step five, after the BCM is successfully verified, sending an engine starting request to the EMS until the vehicle is started and carrying out remote control parking related actions.
2. The vehicle start control method for the remote control parking system according to claim 1, wherein in the second step, the BCM request message S2 is 64 bits, i.e., 8 bytes;
wherein byte0 of S2 is the state of the remote control starting request; byte2 of the S2 is an authentication random number which is an 8-bit random number; the bytes 1, 3, 4, 5, 6, and 7 of the other S2 are random numbers.
3. The vehicle start control method for the remote controlled parking system as claimed in claim 2, wherein in the second step, bit4 of byte0 of S2 is a remote control start status flag bit.
4. The vehicle start control method for the remote-controlled parking system according to claim 3, wherein in the third step, the method for synthesizing and encrypting the position information of the mobile phone relative to the vehicle, the authentication random number and the SC code to obtain the BLE response cryptogram S3 comprises:
combining the position information of the mobile phone relative to the vehicle, the authentication random number and the SC code into a 64-bit plaintext;
and then encrypting the plaintext by using the secret key SK through a DES16 algorithm to obtain a BLE response ciphertext S3.
5. The vehicle start control method for the remote-controlled parking system according to claim 4, wherein in the third step, the method of combining the position information of the mobile phone relative to the vehicle, the authentication random number and the SC code into a 64-bit plaintext includes:
taking the position information of the mobile phone relative to the vehicle as byte0 of a 64-bit plaintext;
the authentication random number is used as byte3 of 64-bit plaintext;
byte1 and byte2 of 64-bit plaintext are random numbers, but are not used as random numbers for authentication with BCM;
the SC code is 32 bits, byte4, byte5, byte6, and byte7 of 64 bits of plaintext.
6. The vehicle start control method for the remote controlled parking system as claimed in claim 5, wherein in said third step, bit0, bit1 and bit2 of byte0 in 64 bits of plaintext are position information of the handset relative to the vehicle.
7. The vehicle start control method for the remote-controlled parking system according to claim 4, wherein in the third step, the key SK is 64 bits;
in the fourth step, the method for decrypting the BLE response cryptogram S3 includes:
and decrypting the BLE response ciphertext S3 by using the secret key SK through a DES16 algorithm to obtain a BLE plaintext.
8. A vehicle start control system for a remote controlled parking system, the system comprising:
the device comprises a first processing module, a second processing module and a controller, wherein the first processing module is configured that BLE sends a CAN network signal S1 to BCM after the BLE receives remote control starting sent by APP;
the second processing module is configured to synthesize a BCM request message S2 after the BCM receives the S1 signal of BLE and judges that the signal is a remote control start request;
the third processing module is configured to extract a remote control starting request state flag bit in the request message S2 after the BLE receives the BCM request message S2, and if the remote control starting request state flag bit is judged to be 1, the BLE judges the position of the mobile phone relative to the vehicle according to a bluetooth antenna installed on the vehicle; after the position of the mobile phone relative to the vehicle is extracted, the BLE extracts an authentication random number in the request message S2, and then position information of the mobile phone relative to the vehicle, the authentication random number and the SC code are synthesized and encrypted to obtain a BLE response ciphertext S3;
a fourth processing module, configured to receive a BLE response ciphertext S3 and decrypt the BLE response ciphertext S3 by the BCM; and checking the SC code and the authentication random number, if the SC code and the authentication random number are checked successfully, extracting the position information of the mobile phone relative to the vehicle for logic judgment: if the extracted position information of the mobile phone relative to the vehicle is reasonable in BCM, the BLE and the BCM are successfully verified, meanwhile, the BCM sends a network signal S4 which is successfully verified to the BLE, and otherwise, the verification fails;
and the fifth processing module is configured to send an engine starting request to the EMS after the BCM is successfully verified until the vehicle is started and remote control parking related actions are carried out.
9. An electronic apparatus, characterized in that the electronic apparatus comprises a memory storing a computer program and a processor implementing the steps in a vehicle start-up control method for a remote-controlled parking system according to any one of claims 1 to 7 when the processor executes the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, implements the steps in a vehicle start control method for a remote controlled parking system according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210737802.5A CN115150144A (en) | 2022-06-20 | 2022-06-20 | Vehicle start control method and system for remote control parking system, electronic device and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210737802.5A CN115150144A (en) | 2022-06-20 | 2022-06-20 | Vehicle start control method and system for remote control parking system, electronic device and storage medium |
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| CN115150144A true CN115150144A (en) | 2022-10-04 |
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