CN107215308B - Keyless system and control method of keyless system - Google Patents
Keyless system and control method of keyless system Download PDFInfo
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- CN107215308B CN107215308B CN201610200077.2A CN201610200077A CN107215308B CN 107215308 B CN107215308 B CN 107215308B CN 201610200077 A CN201610200077 A CN 201610200077A CN 107215308 B CN107215308 B CN 107215308B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2325/00—Indexing scheme relating to vehicle anti-theft devices
- B60R2325/10—Communication protocols, communication systems of vehicle anti-theft devices
- B60R2325/101—Bluetooth
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Abstract
The invention provides a keyless system and a control method thereof, wherein the keyless system comprises a vehicle-mounted device and a mobile communication device, and the method comprises the following steps: the method comprises the steps that a vehicle-mounted device sends an inquiry signal, so that a mobile communication device generates a response signal after receiving the inquiry signal, wherein the inquiry signal comprises an authentication request and a time stamp, the time stamp comprises the sending time of the inquiry signal, and the response signal comprises the time stamp and the identity information of the mobile communication device; after receiving the response signal sent by the mobile communication device, the vehicle-mounted device judges whether to authenticate the identity information of the mobile communication device according to the timestamp in the response signal; and when the identity information of the mobile communication device is judged to be authenticated, authenticating the identity information of the mobile communication device, and controlling the vehicle to execute corresponding actions after the authentication is passed. The method of the invention can effectively improve the safety and reliability of the keyless system.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a keyless system and a control method of the keyless system.
Background
As shown in fig. 1, the Passive Entry and Start system mainly includes a vehicle-mounted device (e.g., a vehicle-mounted communication module and a PEPS module) and a smart key (e.g., a mobile communication device) that is carried by a user and used for legal identity recognition, and the vehicle-mounted device and the smart key can communicate with each other in a short-distance wireless communication manner, such as bluetooth. As shown in fig. 2, when a user enters the detection range of the vehicle with the smart key, the vehicle can recognize and authenticate the validity of the smart key, and if the authentication is passed, the vehicle can be controlled to perform corresponding actions.
Although the smart key system provides convenience for users, the mobile communication device and the vehicle-mounted device are required to perform wireless communication, for example, electromagnetic waves used for wireless communication such as bluetooth are all transmitted openly, and other devices are likely to intercept and reproduce the intercepted electromagnetic wave spectrum. Therefore, the illegal persons can capture and transmit information by using a plurality of transfer machines, so that the illegal persons pretend to be legal keys to unlock the vehicle and the like, and property loss is caused.
Disclosure of Invention
In view of this, the present invention is directed to a method for controlling a keyless system, which can effectively improve the security and reliability of the keyless system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a control method of a keyless system including an in-vehicle device and a mobile communication device, the control method comprising the steps of: the vehicle-mounted device sends an inquiry signal so that the mobile communication device generates a response signal after receiving the inquiry signal, wherein the inquiry signal comprises an authentication request and a timestamp, the timestamp comprises the sending time of the inquiry signal, and the response signal comprises the timestamp and the identity information of the mobile communication device; after receiving the response signal sent by the mobile communication device, the vehicle-mounted device judges whether to authenticate the identity information of the mobile communication device according to a timestamp in the response signal; and when the identity information of the mobile communication device is judged to be authenticated, authenticating the identity information of the mobile communication device, and controlling the vehicle to execute corresponding actions after the authentication is passed.
Further, after receiving the response signal sent by the mobile communication device, the vehicle-mounted device determines whether to authenticate the identity information of the mobile communication device according to a timestamp in the response signal, including: calculating the time difference between the sending time of the polling signal and the current time according to the time stamp in the response signal; judging whether the time difference is less than a preset time or not; if so, judging to authenticate the identity information of the mobile communication device.
Further, before the in-vehicle device sends the polling signal, the method further includes: the vehicle-mounted device generates the authentication request and a timestamp; and generating the polling signal after encrypting the authentication request and the time stamp.
Further, before the mobile communication device generates the response signal, the method further includes: the mobile communication device decrypts the polling signal to obtain the authentication request and the timestamp; generating identity information of the mobile communication device according to the authentication request; and generating the response signal after encrypting the identity information and the timestamp, and sending the response signal to the vehicle-mounted device.
Further, after receiving the response signal sent by the mobile communication device, the vehicle-mounted device calculates a time difference between the sending time of the inquiry signal and the current time according to a timestamp in the response signal, and further includes: and decrypting the response signal to obtain the identity information of the mobile communication device and the timestamp.
Further, the vehicle-mounted device and the mobile communication device communicate through Bluetooth.
Compared with the prior art, the control method of the keyless system has the following advantages:
the control method of the keyless system of the invention, the vehicle-mounted device adds a time stamp to the polling signal, and judges whether the polling signal is a response signal sent by a legal mobile communication device according to the time stamp, for example, calculates the time interval between the sending of the polling signal and the receiving of the response signal time aiming at the polling signal, then judges whether the polling signal is the response signal sent by the legal mobile communication device according to the condition that the interworking time (millisecond level) between the Bluetooth is far less than the interworking time (second level) of a relay machine such as a 2G network, a 3G network, a 4G network and the like, further authenticates the identity of the mobile communication device after judging that the response signal is directly sent by the legal mobile communication device, and if the authentication is passed (namely, a correct and legal key signal), the vehicle is unlocked and the like, the method can effectively avoid property loss caused by the fact that an illegal user utilizes a transfer machine and the like to capture and forward information so as to pretend to be a legal key to unlock the vehicle and the like, and can effectively improve the safety and reliability of a keyless system.
A second objective of the present invention is to provide a control method for a keyless system, which can effectively improve the security and reliability of the keyless system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a control method of a keyless system, wherein the keyless system comprises an in-vehicle device and a mobile communication device, the control method comprising: the mobile communication device sends an inquiry signal so that the vehicle-mounted device generates a response signal after receiving the inquiry signal, wherein the inquiry signal comprises an authentication request and a timestamp, the timestamp comprises the sending time of the inquiry signal, and the response signal comprises the timestamp and the identity information of the vehicle-mounted device; after receiving the response signal sent by the vehicle-mounted device, the mobile communication device judges whether to authenticate the identity information of the vehicle-mounted device according to a timestamp in the response signal; and when the identity information of the vehicle-mounted device is judged to be authenticated, authenticating the identity information of the vehicle-mounted device, and sending a control signal to the vehicle-mounted device after the authentication is passed so that the vehicle-mounted device can control the vehicle to execute corresponding actions.
According to the control method of the keyless system of the embodiment of the invention, the mobile communication device adds the timestamp into the polling signal, judges whether the polling signal is a response signal sent by a legal vehicle-mounted device according to the timestamp, for example, calculates the time interval between the sending time of the polling signal and the receiving time of the response signal aiming at the polling signal, then judges whether the polling signal is the response signal sent by the legal vehicle-mounted device according to the condition that the interworking time (millisecond level) between the Bluetooth is far less than the interworking time (second level) of a relay machine in a 2G network, a 3G network, a 4G network and the like, further authenticates the identity of the vehicle-mounted device after the response signal directly sent by the legal vehicle-mounted device is judged, and if the authentication is passed, sends a control instruction to the vehicle-mounted device so as to carry out operations such as unlocking the vehicle and the like, the method can effectively avoid property loss caused by the fact that an illegal user utilizes a transfer machine and the like to capture and forward information so as to pretend to be a legal key to unlock the vehicle and the like, and can effectively improve the safety and reliability of a keyless system.
A third object of the present invention is to provide an in-vehicle apparatus having high safety and reliability.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the vehicle-mounted device is used for sending an inquiry signal, judging whether to authenticate identity information of a mobile communication device according to a timestamp in a response signal sent by the mobile communication device after the response signal is received, authenticating the identity information of the mobile communication device when the identity information of the mobile communication device is judged to be authenticated, and controlling the vehicle to execute corresponding actions after the authentication is passed, wherein the inquiry signal comprises an authentication request and the timestamp, and the timestamp comprises the sending time of the inquiry signal.
Further, after receiving the response signal sent by the mobile communication device, the vehicle-mounted device determines whether to authenticate the identity information of the mobile communication device according to a timestamp in the response signal, including: and calculating the time difference between the sending time of the inquiry signal and the current time according to the time stamp in the response signal, judging whether the time difference is less than the preset time, and if so, judging to authenticate the identity information of the mobile communication device.
Further, the vehicle-mounted device performs bluetooth communication with the mobile communication device, and the mobile communication device is configured to generate the response signal after receiving the polling signal, where the response signal includes the timestamp and the identity information of the mobile communication device.
Further, the vehicle-mounted device is further configured to generate the authentication request and the timestamp before sending the interrogation signal, and generate the interrogation signal after encrypting the authentication request and the timestamp; the mobile communication device is further configured to decrypt the inquiry signal to obtain the authentication request and the timestamp before generating the response signal, generate identity information of the mobile communication device according to the authentication request, encrypt the identity information and the timestamp, generate the response signal, and send the response signal to the vehicle-mounted device.
Further, the vehicle-mounted device is further configured to decrypt the response signal before calculating a time difference between the sending time of the inquiry signal and the current time according to the timestamp in the response signal, so as to obtain the identity information of the mobile communication device and the timestamp.
The advantages of the keyless system and the control method of the keyless system are the same as those of the prior art, and are not described herein again.
A fourth object of the present invention is to provide a mobile communication device, which can effectively improve the safety and reliability of a vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a mobile communication device is used for sending an inquiry signal so that a vehicle-mounted device generates a response signal after receiving the inquiry signal and sends the response signal to the vehicle-mounted device, judging whether to authenticate the identity information of the vehicle-mounted device according to the timestamp in the response signal, and when judging to authenticate the identity information of the vehicle-mounted device, authenticating the identity information of the vehicle-mounted device, and sending a control signal to the vehicle-mounted device after the authentication is passed so that the vehicle-mounted device can control the vehicle to execute corresponding actions, wherein the inquiry signal includes an authentication request and a time stamp, the time stamp includes a transmission time of the inquiry signal, and the response signal includes the time stamp and identity information of the in-vehicle device.
The advantages of the mobile communication device and the control method of the keyless system proposed in the second objective are the same as those of the prior art, and are not described herein again.
A fifth object of the invention is to propose a keyless system which has a high security and reliability.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a keyless system is provided with the in-vehicle device and the mobile communication device according to any one of the above embodiments.
The keyless system has the same advantages as the vehicle-mounted device compared with the prior art, and is not described again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a keyless system;
FIG. 2 is a schematic diagram of signal interaction between the vehicle-mounted device and the mobile communication device in the keyless system shown in FIG. 1;
FIG. 3 is a flow chart of a control method of a keyless system according to an embodiment of the invention;
fig. 4 is a schematic diagram illustrating that an in-vehicle device periodically transmits an interrogation signal in a control method of a keyless system according to an embodiment of the invention;
fig. 5 is a schematic diagram illustrating signal transmission between an in-vehicle device and a mobile communication device in a control method of a keyless system according to an embodiment of the invention;
fig. 6 is a block diagram of a keyless system according to an embodiment of the present invention.
Description of reference numerals:
keyless system 600, vehicle-mounted device 610 and mobile communication device 620.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In the following description, the in-vehicle device may also be referred to as an in-vehicle terminal, and the mobile communication device may also be referred to as a mobile communication terminal.
Fig. 3 is a flowchart of a control method of a keyless system according to an embodiment of the present invention.
The keyless system comprises a vehicle-mounted device and a mobile communication device.
As shown in fig. 3, a control method of a keyless system according to an embodiment of the present invention includes the steps of:
s301: the vehicle-mounted device sends the inquiry signal, so that the mobile communication device generates a response signal after receiving the inquiry signal, wherein the inquiry signal comprises an authentication request and a time stamp, the time stamp comprises the sending time of the inquiry signal, and the response signal comprises the time stamp and the identity information of the mobile communication device.
Specifically, the vehicle-mounted device comprises a vehicle-mounted communication module and a PEPS module, the vehicle-mounted communication module is a Bluetooth module for example, the PEPS module is a PEPS controller for example, and the PEPS controller generates an inquiry signal, periodically sends the inquiry signal to the outside through the Bluetooth module and waits for the response of the mobile communication device. As shown in fig. 4, the in-vehicle device periodically sends out polling signals, each polling signal includes an authentication request, such as identity search information, and a timestamp, such as denoted by Tpeps _1, Tpeps _2, Tpeps _ i, and so on, where Tpeps _1 denotes a time of a first sending cycle, Tpeps _2 denotes a time of a second sending cycle, and Tpeps _ i denotes a time of an ith sending cycle.
The mobile communication device is, for example, a smart phone, and the vehicle-mounted device and the mobile communication device communicate with each other through bluetooth. After receiving the polling signal through the Bluetooth module of the smart phone, the smart phone generates identity information of the smart phone according to an authentication request in the polling signal, then forms a response signal by the identity information of the smart phone and a timestamp in the polling signal, and sends the response signal to the outside through the Bluetooth module. The identification information includes, for example, a key signal of the vehicle.
S302: and after receiving the response signal sent by the mobile communication device, the vehicle-mounted device judges whether to authenticate the identity information of the mobile communication device according to the timestamp in the response signal.
Specifically, the time difference between the sending time of the polling signal and the current time may be calculated according to the timestamp in the response signal, and then it is determined whether the time difference is less than a predetermined time, and if so, it is determined that the identity information of the mobile communication device is authenticated. After the response signal sent to the outside by the mobile communication device is received by the vehicle-mounted device, the vehicle-mounted device analyzes the timestamp and the identity information in the response signal. The vehicle-mounted device can calculate the response to a certain polling signal after the interval of the mobile communication device according to the timestamp and the current time, namely the time difference between the sending time of the certain polling signal and the current time.
S303: and when the identity information of the mobile communication device is judged to be authenticated, authenticating the identity information of the mobile communication device, and controlling the vehicle to execute corresponding actions after the authentication is passed. For example, if the time difference is less than the predetermined time, the identity information of the mobile communication device is determined to be authenticated.
It should be noted that, bluetooth is generally used for communication between the vehicle-mounted device and the mobile communication device, and the response time of bluetooth communication is usually in the order of milliseconds, so under normal conditions, the time difference should also be in the order of milliseconds, if the order of milliseconds is exceeded, for example: if the time difference is of the order of seconds, for example, 2 seconds, it may be that there is an abnormality in the communication between the in-vehicle apparatus and the mobile communication apparatus.
In one embodiment of the present invention, the predetermined time may be set to 200 milliseconds. That is, if the response time (i.e., the time difference) exceeds 200 msec, it is considered that there is an abnormality in the communication between the in-vehicle apparatus and the mobile communication apparatus, such as: the owner of the vehicle is far away from the vehicle, but illegal persons intercept the inquiry signal of the vehicle by one or more transfer machines, send the inquiry signal to the mobile communication device through a network (such as a 2G network, a 3G network, a 4G network), intercept a response signal from the mobile communication device, and forward the response signal to the vehicle-mounted device through the transfer machines, because the interworking time of the 2G network, the 3G network, the 4G network and the like is usually in the order of seconds, for example: the vehicle-mounted device receives the channel-answering signal 2 seconds after sending a certain inquiry signal, and then judges that an abnormality exists, if the signal is possibly intercepted by illegal molecules, namely: illegal molecules utilize the transfer machine to capture and transfer information so as to disguise as a legal key to realize vehicle unlocking and the like, thereby causing property loss.
In the embodiment of the present invention, a timestamp is added to the polling signal, and a time interval between the time when the polling signal is sent and the time when the response signal corresponding to the polling signal is received is calculated according to the timestamp, and then, whether the response signal is sent by a legitimate mobile communication device can be determined according to the condition that the interworking time (millisecond level) between bluetooth is much shorter than the interworking time (second level) of a relay such as a 2G network, a 3G network, a 4G network, and the like. If not, the signal may be discarded without any processing. Otherwise, the identity of the mobile communication device is further authenticated, and if the authentication is passed (namely, a correct and legal key signal), vehicle unlocking and other operations are carried out.
According to the control method of the keyless system of the embodiment of the invention, the vehicle-mounted device adds the timestamp into the polling signal, judges whether the polling signal is a response signal sent by a legal mobile communication device according to the timestamp, for example, calculates the time interval between the sending time of the polling signal and the receiving time of the response signal aiming at the polling signal, then judges whether the polling signal is the response signal sent by the legal mobile communication device according to the condition that the interworking time (millisecond level) between the Bluetooth is far less than the interworking time (second level) of a relay station such as a 2G network, a 3G network, a 4G network and the like, further authenticates the identity of the mobile communication device after judging that the response signal is directly sent by the legal mobile communication device, and performs vehicle unlocking and other operations if the authentication is passed (namely, a correct and legal key signal), the method can effectively avoid property loss caused by the fact that an illegal user utilizes a transfer machine and the like to capture and forward information so as to pretend to be a legal key to unlock the vehicle and the like, and can effectively improve the safety and reliability of a keyless system.
To further enhance the security of the keyless system, in an embodiment of the present invention, the vehicle-mounted device (i.e., the vehicle system) may encrypt the signal before transmitting the signal, and similarly, the mobile communication device may encrypt the signal before transmitting the signal. As shown in fig. 5, before the in-vehicle device transmits the polling signal, the method further includes: the vehicle-mounted device generates an authentication request (namely, authentication information) and a timestamp Tpeps _ i, encrypts the authentication information and the timestamp Tpeps _ i to generate a vehicle-side transmission plaintext (namely, an inquiry signal), and then sends the plaintext to the mobile communication device. Before the mobile communication device generates the response signal, the method further comprises the following steps: the mobile communication device decrypts the polling signal (namely, the vehicle end transmits a plaintext) to obtain an authentication request and a time stamp (namely, authentication information and the time stamp Tpeps _ i), and then generates identity information of the mobile communication device according to the authentication request; and generating the response signal after encrypting the identity information and the timestamp, and sending the response signal to the vehicle-mounted device. That is, the mobile communication device encrypts the timestamp and the identity information (i.e., the response to the authentication information) to generate a response signal (i.e., the mobile communication device transmits the plaintext). Further, after receiving the response signal sent by the mobile communication device, the vehicle-mounted device calculates a time difference between the sending time of the polling signal and the current time according to the timestamp in the response signal, and further includes: the reply signal (i.e., the plaintext transmission from the mobile communication device) is decrypted to obtain the identity information and the timestamp Tpeps _ i of the mobile communication device. The vehicle-mounted device and the mobile communication device encrypt transmission signals in the signal transmission process, so that the safety and the reliability of the keyless system can be further improved.
According to the control method of the keyless system, the safety and the reliability of the keyless system can be effectively improved.
In another example of the present invention, the mobile communication device may send the polling message, send a control instruction to the vehicle-mounted device after the identity information of the vehicle-mounted device is verified, so that the vehicle-mounted device controls the vehicle to perform a corresponding action.
A control method of a keyless system according to an embodiment of the present invention includes the steps of: the mobile communication device sends an inquiry signal so that the vehicle-mounted device generates a response signal after receiving the inquiry signal, wherein the inquiry signal comprises an authentication request and a time stamp, the time stamp comprises the sending time of the inquiry signal, and the response signal comprises the time stamp and the identity information of the vehicle-mounted device; after receiving the response signal sent by the vehicle-mounted device, the mobile communication device judges whether to authenticate the identity information of the vehicle-mounted device according to the timestamp in the response signal; and when the identity information of the vehicle-mounted device is judged to be authenticated, authenticating the identity information of the vehicle-mounted device, and sending a control signal to the vehicle-mounted device after the authentication is passed so that the vehicle-mounted device can control the vehicle to execute corresponding actions. Therefore, the safety and the reliability of the keyless system can be effectively improved.
According to the control method of the keyless system of the embodiment of the invention, the mobile communication device adds the timestamp into the polling signal, judges whether the polling signal is a response signal sent by a legal vehicle-mounted device according to the timestamp, for example, calculates the time interval between the sending time of the polling signal and the receiving time of the response signal aiming at the polling signal, then judges whether the polling signal is the response signal sent by the legal vehicle-mounted device according to the condition that the interworking time (millisecond level) between the Bluetooth is far less than the interworking time (second level) of a relay machine in a 2G network, a 3G network, a 4G network and the like, further authenticates the identity of the vehicle-mounted device after the response signal directly sent by the legal vehicle-mounted device is judged, and if the authentication is passed, sends a control instruction to the vehicle-mounted device so as to carry out operations such as unlocking the vehicle and the like, the method can effectively avoid property loss caused by the fact that an illegal user utilizes a transfer machine and the like to capture and forward information so as to pretend to be a legal key to unlock the vehicle and the like, and can effectively improve the safety and reliability of a keyless system.
It can be understood that the specific implementation manner of sending the query message by the mobile communication device and verifying the identity information of the vehicle-mounted device is similar to that of sending the query message by the vehicle-mounted device and verifying the identity information of the mobile communication device, and the difference is only the difference between the verifying party and the verified party, and is not repeated here in order to reduce redundancy.
Fig. 6 is a block diagram of a keyless system according to an embodiment of the invention. As shown in fig. 6, the keyless system 600 according to an embodiment of the present invention includes a vehicle-mounted device 610 and a mobile communication device 620.
In an embodiment of the present invention, the vehicle-mounted device 610 is configured to send an inquiry signal, and after receiving a response signal sent from the mobile communication device, determine whether to authenticate the identity information of the mobile communication device according to a timestamp in the response signal, for example, calculate a time difference between a sending time of the inquiry signal and a current time according to the timestamp in the response signal, then determine whether the time difference is less than a predetermined time, and if so, determine to authenticate the identity information of the mobile communication device. When the identity information of the mobile communication device is judged to be authenticated, for example, if the time difference is smaller than the preset time, the identity information of the mobile communication device is judged to be authenticated, the identity information of the mobile communication device is authenticated, and the vehicle is controlled to execute corresponding actions after the authentication is passed, wherein the inquiry signal comprises an authentication request and a time stamp, and the time stamp comprises the sending time of the inquiry signal.
As shown in fig. 6, the mobile communication device 620 may perform bluetooth communication with the in-vehicle device 610, and the mobile communication device 620 is configured to generate a response signal after receiving the polling signal, where the response signal includes a timestamp and identity information of the mobile communication device.
According to the keyless system of the embodiment of the invention, the vehicle-mounted device adds a time stamp to the polling signal, and judges whether the polling signal is a response signal sent by the legal mobile communication device 620 according to the time stamp, for example, calculates the time interval between the sending time of the polling signal and the receiving time of the response signal aiming at the polling signal, then judges whether the polling signal is the response signal sent by the legal mobile communication device according to the condition that the interworking time (millisecond level) between the bluetooth is far less than the interworking time (second level) of a relay machine such as a 2G network, a 3G network, a 4G network and the like, further authenticates the identity of the mobile communication device after judging that the response signal is directly sent by the legal mobile communication device, and if the authentication is passed (namely, a correct and legal key signal), the vehicle is unlocked and the like, the system can effectively avoid property loss caused by the fact that an illegal user utilizes a transfer machine and the like to capture and forward information so as to disguise as a legal key to unlock a vehicle and the like, and has high safety and reliability.
In an embodiment of the present invention, the in-vehicle device 610 is further configured to generate an authentication request and a timestamp before sending the polling signal, and generate the polling signal after encrypting the authentication request and the timestamp; the mobile communication device 620 is further configured to decrypt the polling signal to obtain an authentication request and a time stamp before generating the response signal, generate identity information of the mobile communication device 620 according to the authentication request, encrypt the identity information and the time stamp, generate the response signal, and transmit the response signal to the vehicle-mounted device 610.
Further, the vehicle-mounted device 610 is further configured to decrypt the response signal before calculating a time difference between the sending time of the inquiry signal and the current time according to the timestamp in the response signal, so as to obtain the identity information and the timestamp of the mobile communication device 620. Therefore, the safety and the reliability of the keyless system can be further improved.
The vehicle-mounted device provided by the embodiment of the invention has higher safety and reliability.
It should be noted that a specific implementation manner of the vehicle-mounted device in the embodiment of the present invention is similar to a specific implementation manner of the control method of the keyless system in the embodiment of the present invention, and please refer to the description of the method part specifically, and details are not described here in order to reduce redundancy.
In other examples of the present invention, the mobile communication device 620 may send the polling message, and send a control instruction to the vehicle-mounted device after the identity information of the vehicle-mounted device 610 passes the verification, so that the vehicle-mounted device 610 controls the vehicle to perform a corresponding action.
Specifically, in an embodiment of the present invention, a mobile communication device 620 is provided, where the mobile communication device 620 is configured to transmit an inquiry signal, so that the vehicle-mounted device 610 generates a response signal after receiving the inquiry signal, where the inquiry signal includes an authentication request and a timestamp, the timestamp includes a transmission time of the inquiry signal, and the response signal includes the timestamp and identity information of the vehicle-mounted device 610; after receiving the response signal sent by the in-vehicle device 610, the mobile communication device 620 determines whether to authenticate the identity information of the in-vehicle device 610 according to the timestamp in the response signal; when the identity information of the vehicle-mounted device 610 is judged to be authenticated, the identity information of the vehicle-mounted device 610 is authenticated, and a control signal is sent to the vehicle-mounted device 610 after the authentication is passed, so that the vehicle-mounted device 610 controls the vehicle to execute corresponding actions. Therefore, the safety and the reliability of the keyless system can be effectively improved.
It can be understood that the specific implementation manner of sending the query message by the mobile communication device and verifying the identity information of the vehicle-mounted device is similar to that of sending the query message by the vehicle-mounted device and verifying the identity information of the mobile communication device, and the difference is only the difference between the verifying party and the verified party, and is not repeated here in order to reduce redundancy.
According to the mobile communication device provided by the embodiment of the invention, the safety and the reliability of the vehicle can be effectively improved.
It should be noted that the specific implementation manner of the mobile communication device in the embodiment of the present invention is similar to the specific implementation manner of the control method of the keyless system in the embodiment of the present invention, and please refer to the description of the method part specifically, and details are not described here in order to reduce redundancy.
Further, referring to fig. 6, the keyless system 600 according to the embodiment of the present invention is provided with the in-vehicle device 610 and the mobile communication device 620 according to any one of the above embodiments. The keyless system has high safety and reliability.
In addition, other configurations and functions of the keyless system according to the embodiment of the present invention are known to those skilled in the art, and are not described herein in detail to reduce redundancy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A control method of a keyless system, wherein the keyless system comprises an in-vehicle device and a mobile communication device, the control method comprising:
the vehicle-mounted device generates an authentication request and a timestamp, encrypts the authentication request and the timestamp to generate an inquiry signal, and sends the inquiry signal to enable the mobile communication device to generate a response signal after receiving the inquiry signal, wherein the inquiry signal comprises the authentication request and the timestamp, the timestamp comprises the sending time of the inquiry signal, and the response signal comprises the timestamp and the identity information of the mobile communication device;
after receiving the response signal sent by the mobile communication device, the vehicle-mounted device judges whether to authenticate the identity information of the mobile communication device according to a timestamp in the response signal, and the method comprises the following steps: calculating the time difference between the sending time of the polling signal and the current time according to the timestamp in the response signal, judging whether the time difference is less than the preset time, and if so, judging to authenticate the identity information of the mobile communication device;
when the identity information of the mobile communication device is judged to be authenticated, the identity information of the mobile communication device is authenticated, and the vehicle is controlled to execute corresponding actions after the authentication is passed;
before the mobile communication device generates the response signal, the method further comprises:
the mobile communication device decrypts the polling signal to obtain the authentication request and the timestamp;
generating identity information of the mobile communication device according to the authentication request;
generating the response signal after encrypting the identity information and the timestamp, and sending the response signal to the vehicle-mounted device;
after receiving the response signal sent by the mobile communication device, the vehicle-mounted device calculates the time difference between the sending time of the polling signal and the current time according to the timestamp in the response signal, and further includes:
and decrypting the response signal to obtain the identity information of the mobile communication device and the timestamp.
2. The control method of the keyless system according to claim 1, wherein the in-vehicle device and the mobile communication device communicate via bluetooth.
3. A control method of a keyless system, wherein the keyless system comprises an in-vehicle device and a mobile communication device, the control method comprising:
the mobile communication device generates an authentication request and a timestamp, encrypts the authentication request and the timestamp to generate an inquiry signal, and sends the inquiry signal, so that the vehicle-mounted device generates a response signal after receiving the inquiry signal, wherein the inquiry signal comprises the authentication request and the timestamp, the timestamp comprises the sending time of the inquiry signal, and the response signal comprises the timestamp and the identity information of the vehicle-mounted device;
after receiving the response signal sent by the vehicle-mounted device, the mobile communication device judges whether to authenticate the identity information of the vehicle-mounted device according to a timestamp in the response signal, and the method comprises the following steps: calculating the time difference between the sending time of the polling signal and the current time according to the timestamp in the response signal, judging whether the time difference is less than the preset time, and if so, judging to authenticate the identity information of the vehicle-mounted device;
when the identity information of the vehicle-mounted device is judged to be authenticated, authenticating the identity information of the vehicle-mounted device, and sending a control signal to the vehicle-mounted device after the authentication is passed so that the vehicle-mounted device can control the vehicle to execute corresponding actions;
before the on-board device generates the response signal, the method further includes:
the vehicle-mounted device decrypts the polling signal to obtain the authentication request and the time stamp;
generating identity information of the vehicle-mounted device according to the authentication request;
generating the response signal after encrypting the identity information and the timestamp, and sending the response signal to the mobile communication device;
after receiving the response signal sent by the vehicle-mounted device, the mobile communication device calculates a time difference between the sending time of the polling signal and the current time according to a timestamp in the response signal, and further includes: and decrypting the response signal to obtain the identity information of the vehicle-mounted device and the timestamp.
4. An on-vehicle device, characterized in that, the on-vehicle device is configured to generate an authentication request and a timestamp, encrypt the authentication request and the timestamp, generate an inquiry signal, send the inquiry signal, and after receiving the response signal sent by a mobile communication device, determine whether to authenticate identity information of the mobile communication device according to the timestamp in the response signal, and includes: calculating the time difference between the sending time of the polling signal and the current time according to the time stamp in the response signal; judging whether the time difference is less than a preset time or not; if the answer is positive, the identity information of the mobile communication device is judged to be authenticated, when the identity information of the mobile communication device is judged to be authenticated, the identity information of the mobile communication device is authenticated, and the vehicle is controlled to execute corresponding actions after the authentication is passed, wherein the inquiry signal comprises an authentication request and a time stamp, the time stamp comprises the sending time of the inquiry signal, and the vehicle-mounted device is further used for decrypting the answer signal before the time difference between the sending time of the inquiry signal and the current time is calculated according to the time stamp in the answer signal, so that the identity information and the time stamp of the mobile communication device are obtained.
5. The vehicle-mounted device according to claim 4, wherein the determining, by the vehicle-mounted device, whether to authenticate the identity information of the mobile communication device according to a timestamp in the response signal after receiving the response signal sent by the mobile communication device comprises: and calculating the time difference between the sending time of the inquiry signal and the current time according to the time stamp in the response signal, judging whether the time difference is less than the preset time, and if so, judging to authenticate the identity information of the mobile communication device.
6. The vehicle-mounted device of claim 4, wherein the vehicle-mounted device is in Bluetooth communication with the mobile communication device, and the mobile communication device is configured to generate the response signal after receiving the polling signal, wherein the response signal includes the timestamp and identity information of the mobile communication device.
7. The vehicle-mounted device according to claim 6,
the mobile communication device is further configured to decrypt the inquiry signal to obtain the authentication request and the timestamp before generating the response signal, generate identity information of the mobile communication device according to the authentication request, encrypt the identity information and the timestamp, generate the response signal, and send the response signal to the vehicle-mounted device.
8. A mobile communication device is used for generating an authentication request and a time stamp, encrypting the authentication request and the time stamp to generate an inquiry signal, sending the inquiry signal so that an on-board device generates a response signal after receiving the inquiry signal, and judging whether to authenticate identity information of the on-board device according to the time stamp in the response signal after receiving the response signal sent by the on-board device, and comprises: calculating the time difference between the sending time of the polling signal and the current time according to the time stamp in the response signal; judging whether the time difference is less than a preset time or not; if so, judging that the identity information of the vehicle-mounted device is authenticated, and when the identity information of the vehicle-mounted device is judged to be authenticated, authenticating the identity information of the vehicle-mounted device, and sending a control signal to the vehicle-mounted device after the authentication is passed so that the vehicle-mounted device controls the vehicle to execute corresponding actions, wherein the inquiry signal comprises an authentication request and a time stamp, the time stamp comprises the sending time of the inquiry signal, and the response signal comprises the time stamp and the identity information of the vehicle-mounted device,
before the on-board device generates the response signal, the method further includes: the vehicle-mounted device decrypts the polling signal to obtain the authentication request and the time stamp; generating identity information of the vehicle-mounted device according to the authentication request; and generating the response signal after encrypting the identity information and the timestamp, and sending the response signal to the mobile communication device.
9. A keyless system, wherein a vehicle-mounted device as claimed in any one of claims 4 to 7 is provided, or a mobile communication device as claimed in claim 8 is provided.
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| CN111147515B (en) * | 2019-12-31 | 2021-12-17 | 北京深思数盾科技股份有限公司 | Access control method and device |
| CN112298101B (en) * | 2020-11-03 | 2022-07-08 | 奇瑞汽车股份有限公司 | Method and system for keyless control of a motor vehicle |
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