Vehicle electronic key registration system and registration method, and vehicle control device

Abstract

To prevent a registered electronic key from being copied, to thereby improve security.SOLUTION: A vehicle control device 10 causes a display portion of a vehicle 50 to display a PIN code (first identification information) in a registration mode. A user inputs the PIN code to a portable machine 30, and reads a bar code 29 (second identification information) of a FOB 20 (a first electronic key) by the portable machine 30. The portable machine 30 uses the PIN code and the bar code to generate an encryption key Y (second encryption information) common to the portable machine 30 and the vehicle control device 10, performs prescribed calculation on the basis of the encryption key Y, and transmits a result of calculation to the vehicle control device 10. The vehicle control device 10 determines whether the calculation result received from the portable machine 30 is correct or not and when a result of calculation is correct, registers the portable machine 30 as a second electronic key by storing the encryption key Y.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a system for registering an electronic key for a vehicle such as a motorcycle, and more particularly to a registration system for using a portable device such as a smartphone as an electronic key. [Background technology]

[0002] Some motorcycles are equipped with a system that uses two-way wireless communication between an electronic key carried by the user and a vehicle control device installed in the vehicle to authenticate the electronic key through ID matching, and if the authentication results are normal, allows the handlebars to be unlocked and the engine to be started.

[0003] While remote-controlled FOBs (hereafter simply referred to as "FOBs") have traditionally been widely used as electronic keys for vehicles, in recent years vehicles have also emerged that allow the vehicle owner to use a mobile device such as a smartphone as an electronic key instead of an FOB. To use such a mobile device as an electronic key, as with an FOB, a cryptographic key common to both the mobile device and the vehicle must be registered in advance with the vehicle, along with the mobile device's identification information, so that the mobile device can be used only with that vehicle.

[0004] Patent documents 1 to 3 show key registration systems in which a portable device such as a smartphone is used as an electronic key for a vehicle. Patent document 4 shows a key registration system in which a bracelet-type wearable device is used as an electronic key for a vehicle. Patent document 5 shows a system in which necessary services are provided using both an electronic key and a smartphone. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2020-76242 [Patent Document 2] Patent Publication No. 2021-25313 [Patent Document 3] Japanese Patent Publication No. 2020-147926 [Patent Document 4] Japanese Patent Application Laid-Open No. 2017-172145 [Patent Document 5] Japanese Patent Publication No. 2020-13363 Summary of the Invention [Problem to be solved by the invention]

[0006] If the information required to register a mobile device such as a smartphone as an electronic key for a vehicle is stolen by a malicious third party, that third party can easily create a copy of the registered mobile device, creating a risk that the vehicle could be stolen using the copied mobile device, threatening security.

[0007] An object of the present invention is to improve security by preventing a registered electronic key from being duplicated. [Means for solving the problem]

[0008] The electronic key registration system according to the present invention includes a first electronic key and a second electronic key owned by a vehicle user, and a vehicle control device mounted on the vehicle that controls the operation of the vehicle by wirelessly communicating with the first electronic key and the second electronic key. First encryption information common to the first electronic key and the vehicle control device is pre-registered in the vehicle control device, and the vehicle control device registers a portable device owned by the user as the second electronic key.

[0009] The vehicle control device, while communicating with the first electronic key, displays the first identification information on a display unit of the vehicle based on a predetermined operation on the portable device. When the vehicle control device receives the first identification information input by the user on the portable device from the portable device, the vehicle control device determines whether the first identification information is correct, and if the first identification information is correct, requests the portable device to read second identification information in which the first encryption information is expressed in a predetermined format.

[0010] When the portable device reads the second identification information, it uses the first identification information and the second identification information to generate second encryption information common to the portable device and the vehicle control device, performs a predetermined calculation based on the second encryption information, and transmits the calculation result to the vehicle control device. The vehicle control device determines whether the calculation result received from the portable device is correct, and if the calculation result is normal, stores the second encryption information and registers the portable device as a second electronic key.

[0011] According to this system, when registering a portable device, the user must input the first identification information displayed on the vehicle's display into the portable device, and the second cryptographic information is generated using both the input first identification information and the read second identification information. Therefore, even if a third party steals data necessary to generate the second cryptographic information from the user's portable device through skimming, the second cryptographic information cannot be generated simply by reading the second identification information, making it impossible for the third party to duplicate the portable device used as an electronic key. As a result, vehicle theft can be prevented and security can be improved.

[0012] In the present invention, the portable device may perform a predetermined calculation based on the second encryption information, the portable device ID, and a random number, and transmit the calculation result together with the ID and random number to the vehicle control device. In this case, if the determination result of the first identification information is normal, the vehicle control device generates second encryption information using the first encryption information and the first identification information, and performs a predetermined calculation based on the ID and random number received from the portable device and the generated second encryption information. Then, if the calculation result matches the calculation result received from the portable device, the vehicle control device stores the second encryption information.

[0013] In the present invention, the first identification information may be a randomly generated PIN code, and the second identification information may be a barcode displayed on a tag attached to the first electronic key.

[0014] In the present invention, the PIN code may be displayed on a mileage display unit of a meter provided in the vehicle. Also, when a transition to the registration mode is made based on an operation of an operation unit provided in the vehicle, a registration mode icon may be displayed on the meter.

[0015] In the present invention, the first electronic key may be a key FOB, and the second electronic key may be a smartphone, a tablet terminal, or a wearable terminal. [Effects of the Invention]

[0016] According to the present invention, it is possible to prevent a registered electronic key from being duplicated, thereby improving security. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is an overall view of an electronic key registration system according to the present invention; [Figure 2] FIG. 2 is a block diagram showing the specific configuration of a vehicle, an FOB, and a portable device. [Figure 3] 1 is a flowchart showing the basic procedure for registering an electronic key. [Figure 4] FIG. 10 is a diagram showing a state in which a registration mode icon is displayed on a meter. [Figure 5] FIG. 10 is a diagram showing a state in which a PIN code is displayed on a meter. [Figure 6] 10A to 10C are diagrams showing screen transitions on the portable device. [Figure 7] FIG. 10 is a diagram illustrating registration of a cryptographic key in a portable device. [Figure 8] FIG. 10 is a diagram illustrating the registration of an encryption key for an FOB. [Figure 9] 10 is a flowchart showing the electronic key registration procedure in further detail. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Throughout the drawings, the same or corresponding parts are designated by the same reference numerals.

[0019] FIG. 1 shows an example of an electronic key registration system according to the present invention. The electronic key registration system 100 comprises a vehicle control device 10 including an ECU (Electronic Control Unit), a FOB 20, which is a remote-controlled electronic key, and a portable device 30 to be registered as an electronic key. The vehicle control device 10 is mounted on a vehicle 50, and the FOB 20 and portable device 30 are carried by the user of the vehicle 50. In this embodiment, the vehicle 50 is a two-wheeled motor vehicle such as a motorcycle or scooter. The FOB 20 is an example of a "first electronic key" according to the present invention, and the portable device 30 is an example of a "second electronic key" according to the present invention.

[0020] The vehicle control device 10 performs bidirectional wireless communication with the FOB 20 and the portable device 30. In this embodiment, from the viewpoints of simplicity and power saving, BLE (Bluetooth Low Energy; Bluetooth is a registered trademark), which is a short-range wireless communication standard, is used as the communication method. An encryption key X common to both the vehicle control device 10 and the FOB 20 is used for BLE communication between them. The encryption key X is registered in advance in the vehicle control device 10. Furthermore, an encryption key Y common to both the vehicle control device 10 and the portable device 30 is used for BLE communication between them. The encryption key Y is newly stored in the vehicle control device 10 when the portable device 30 is registered as an electronic key (details will be described later). The encryption key X corresponds to the "first encryption information" in the present invention, and the encryption key Y corresponds to the "second encryption information" in the present invention.

[0021] FOB 20 is a conventional electronic key, and includes an operation unit 25 provided on the main body and a tag 28 attached to the main body. The operation unit 25 includes an on / off switch 25a, which is a power switch, and an answerback switch 25b, which notifies the vehicle location by flashing a lamp or sounding a buzzer. A barcode 29 is displayed on tag 28. This barcode 29 is a visualized representation of the information of the encryption key X described above, and is an example of the "second identification information" of the present invention.

[0022] In this embodiment, the portable device 30 is a commercially available smartphone, and cannot be used as an electronic key for the vehicle 50 as is. However, by performing predetermined operations on the screen of the display unit 36 ​​according to the procedure described below and registering it in the vehicle control device 10, the portable device 30 can be used as an electronic key for the vehicle 50, similar to the FOB 20. Hereinafter, the portable device 30 will be referred to as the smartphone 30.

[0023] 2 is a block diagram showing an example of a specific configuration of the vehicle control device 10, the FOB 20, and the smartphone 30. Here, only blocks related to the present invention are shown.

[0024] The vehicle control device 10 includes a control unit 11, a transceiver unit 12, an antenna 13, and a memory 14. The control unit 11 is composed of a CPU and the like, and controls the operation of the vehicle control device 10. The transceiver unit 12 performs bidirectional BLE communication with the FOB 20 and the smartphone 30 via the antenna 13, transmitting signals to both and receiving signals from both. The memory 14 stores data necessary for the control of the control unit 11, registration data for the FOB 20 and the smartphone 30, and the like.

[0025] An operation unit 51 and a meter 52 provided in a vehicle 50 are connected to the vehicle control device 10. The operation unit 51 includes a main switch 51a for locking and unlocking the steering wheel and starting and stopping the engine. The meter 52 includes a mileage display unit 52a for displaying the mileage of the vehicle 50.

[0026] The FOB 20 includes a control unit 21, a transceiver unit 22, an antenna 23, a memory 24, and an operation unit 25. The control unit 21 is composed of a CPU and the like, and controls the operation of the FOB 20. The transceiver unit 22 performs bidirectional communication with the vehicle control device 10 via the antenna 23, transmitting signals to the vehicle control device 10 and receiving signals from the vehicle control device 10. The memory 24 has areas for storing data necessary for the control of the control unit 21, as well as the encryption key X and the ID of the FOB 20, as described above. The operation unit 25 has switches 25a and 25b shown in FIG. 1.

[0027] The smartphone 30 includes a control unit 31, a transmitting / receiving unit 32, an antenna 33, a memory 34, an operation unit 35, a display unit 36, and a reading unit 37. The control unit 31 is composed of a CPU and the like, and controls the operation of the smartphone 30. The transmitting / receiving unit 32 performs bidirectional communication with the vehicle control device 10 via the antenna 33, transmitting signals to the vehicle control device 10 and receiving signals from the vehicle control device 10. The memory 34 has areas for storing data necessary for the control of the control unit 31, as well as the encryption key Y and the ID of the smartphone 30. The operation unit 35 includes various operation buttons provided on the main body of the smartphone 30. The display unit 36 ​​is composed of a touch panel, and the reading unit 37 is composed of a camera.

[0028] 3 shows the basic steps for registering the smartphone 30 as an electronic key in the above-described electronic key registration system 100. Each of steps A to M in FIG. 3 will be described below.

[0029] <Step A> When the vehicle control device 10 is communicating with a registered FOB 20 and a predetermined operation, such as long pressing of the main switch 51a, is performed on the operation unit 51 (FIG. 2) of the vehicle 50, the vehicle control device 10 transitions from the normal mode to the registration mode. As a result, as shown in FIG. 4, a registration mode icon 17 indicating that the vehicle is in the registration mode is displayed, for example, in a flashing state, on the meter 52 provided on the vehicle 50.

[0030] <Step B> The display of the registration mode icon 17 informs the user that the device has transitioned to registration mode, and the user operates the smartphone 30 to launch the electronic key registration application. Then, a connection start button 36a, such as that shown in FIG. 6(a), appears on the screen of the display unit 36 ​​of the smartphone 30. The user taps the connection start button 36a to turn it on.

[0031] <Step C> When the connection start button 36a is operated, the vehicle control device 10 displays a randomly generated PIN (Personal Identification Number) code on the meter 52 of the vehicle 50. In more detail, as shown in FIG. 5, for example, the PIN code 18 is displayed on the mileage display section 52a provided on the meter 52. Here, the PIN code 18 consists of a six-digit number.

[0032] <Procedure D> The user enters the displayed PIN code 18 into the smartphone 30 within a predetermined time. More specifically, as shown in FIG. 6(b), a message 36b prompting the user to enter a six-digit PIN code, a PIN code entry field 36c, and an entry completion button 36d are displayed on the screen of the display unit 36 ​​of the smartphone 30. After entering the PIN code in the PIN code entry field 36c, the user taps the entry completion button 36d to turn it on.

[0033] <Step E> If the PIN code entered by the user matches the PIN code 18 displayed on the meter 52, the vehicle control device 10 determines that the entered PIN code is correct, establishes a connection with the smartphone 30, and requests the smartphone 30 to read the barcode 29.

[0034] <Step F> Thereafter, the vehicle control device 10 generates an encryption key Y for the smartphone 30 using the encryption key X of the FOB 20, which has been registered in advance, and the PIN code 18. As described above, the encryption key X is a common key between the vehicle control device 10 and the FOB 20, and the encryption key Y is a common key between the vehicle control device 10 and the smartphone 30.

[0035] <Step G> On the other hand, as shown in FIG. 6(c), for example, a message 36e urging the user to use a camera to read the barcode 29 displayed on the tag 28 of the FOB 20 and a camera activation button 36f are displayed on the screen of the display unit 36 ​​of the smartphone 30. The user operates the camera activation button 36f to activate the camera and read the barcode 29 on the tag 28. As described above, the barcode 29 contains information corresponding to the encryption key X.

[0036] <Step H> Next, the smartphone 30 uses the PIN code 18 and the read barcode 29 to generate an encryption key Y, which is a common key between the vehicle control device 10 and the smartphone 30. The generation of this encryption key Y will be described below using a simple example. PIN code: 654321 (6 digits) Barcode: 1234567890 (10 digits) In this case, the encryption key Y is generated as a combination of the PIN code sequence and the barcode sequence. Encryption key Y: 6543211234567890 (16 digits) This becomes:

[0037] <Step I> Next, the smartphone 30 executes a predetermined calculation based on the generated encryption key Y, the portable device ID unique to the smartphone 30, and the random number. Specifically, for example, a bit operation is performed on the encryption key Y using the portable device ID, and the result is shifted by the amount of the random number using the random number. An XOR (exclusive OR) operation or the like can be used as the bit operation.

[0038] <Step J> Next, the smartphone 30 transmits the calculation result obtained in step I to the vehicle control device 10 together with the portable device ID and the random number.

[0039] <Step K> The vehicle control device 10 executes a predetermined calculation based on the portable device ID and random number received from the smartphone 30 and the encryption key Y generated in step F. Specifically, for example, similar to step I, the vehicle control device 10 executes a bitwise operation on the encryption key Y using the portable device ID, and then performs a calculation process to shift the result by the amount of the random number.

[0040] <Step L> Next, the vehicle control device 10 compares the calculation result of step K with the calculation result received from the smartphone 30, and if the two match (i.e., if the calculation result is normal), it stores the encryption key Y of the smartphone 30 in the memory 14. As a result, the smartphone 30 is registered in the vehicle control device 10 as an electronic key (second electronic key).

[0041] <Step M> When the registration of the smartphone 30 is completed on the vehicle control device 10, the smartphone 30 is notified of this, and the smartphone 30 displays a registration completion message 36g as shown in Figure 6(d) on the screen of the display unit 36, and the encryption key Y is stored in the memory 34, completing the series of processes.

[0042] 7 shows the data flow in the registration process of the encryption key Y. As shown in FIG. 7(a), the smartphone 30 generates the encryption key Y from the barcode 29 and the PIN code 18, performs a predetermined calculation based on the encryption key Y, the portable device ID, and a random number, and obtains a calculation result P1. Meanwhile, as shown in FIG. 7(b), the vehicle control device 10 generates the encryption key Y from the encryption key X of the FOB 20 and the PIN code 18, and performs a predetermined calculation based on the encryption key Y, the portable device ID, and the random number received from the smartphone 30, and obtains a calculation result P2. The calculation result P2 is then compared with the calculation result P1 received from the smartphone 30, and if they match, the registration of the encryption key Y is completed.

[0043] The registration process of the encryption key X, which has been registered before the encryption key Y, is not directly related to the present invention, but is shown in FIG. 8 for reference. As shown in FIG. 8(a), the FOB 20 performs a predetermined calculation based on the encryption key X stored in the memory 24 (FIG. 2), the ID of the FOB 20, and a random number, to obtain a calculation result Q1. Meanwhile, as shown in FIG. 8(b), the vehicle control device 10 performs a predetermined calculation based on the encryption key X stored in the memory 14 (FIG. 2) and the ID and random number received from the FOB 20, to obtain a calculation result Q2. The calculation result Q2 is then compared with the calculation result Q1 received from the FOB 20, and if they match, the registration of the encryption key X is completed.

[0044] Figure 9 is a flowchart showing the electronic key registration procedure in more detail. In Figure 9, to clarify the correspondence with Figure 3, steps A to L in Figure 3 are surrounded by dashed lines A to L.

[0045] First, when the main switch 51a is operated in the operation unit 51 of the vehicle 50 to transition to registration mode (S1), this operation is notified to the control unit 11 of the vehicle control device 10, and the control unit 11 determines that a registration operation has been performed with the main switch 51a (S2). Next, the control unit 11 requests the meter 52 to display an icon, and in response, the registration mode icon 17 of FIG. 4 is displayed on the meter 52 (S3). In addition, the control unit 11 transmits a connection request signal requesting connection with the smartphone 30 to the smartphone 30 via the transceiver unit 12 (S4). This connection request signal is transmitted periodically at regular time intervals.

[0046] Meanwhile, in the smartphone 30, when the application is started, a connection start button 36a shown in FIG. 6(a) is displayed on the screen of the display unit 36 ​​(S5). When the connection start button 36a is operated (S6), the control unit 31 is notified of this, and the control unit 31 and the transmission / reception unit 32 perform connection processing (S7). Note that the connection in this case is a connection that enables communication between the vehicle control device 10 and the smartphone 30, and is a so-called temporary connection. When the connection processing is completed, a response signal is transmitted from the smartphone 30 to the vehicle control device 10 (S8).

[0047] When the control unit 11 of the vehicle control device 10 receives the response signal, it generates a random PIN code 18 (S9). Then, in response to a PIN code display request from the control unit 11, the PIN code 18 of FIG. 5 is displayed on the meter 52 (S10). The control unit 11 also transmits a PIN input request signal to the smartphone 30 via the transceiver 12, requesting input of a PIN code (S11). When the smartphone 30 receives this PIN input request signal, the PIN code input field 36c of FIG. 6(b) is displayed on the screen of the display unit 36 ​​(S12). Then, when the user inputs a PIN code in the PIN code input field 36c (S13), the PIN code is transmitted from the control unit 31 to the vehicle control device 10 via the transceiver 32 (S14).

[0048] The control unit 11 of the vehicle control device 10 determines (S15) whether the PIN code received from the smartphone 30 matches the generated PIN code (S9). If they match, the control unit 11 establishes a connection with the smartphone 30 and transmits a connection establishment notification signal notifying the smartphone 30 via the transceiver unit 12 (S16). This connection is for registering the smartphone 30 as an electronic key, which is a so-called main connection. The connection establishment notification signal also serves as a signal requesting that the barcode 29 be read.

[0049] Upon receiving the connection establishment notification signal, the smartphone 30 displays the camera activation button 36f of FIG. 6(c) on the screen of the display unit 36 ​​in response to a display request from the control unit 31 (S17). Then, by operating this button, the camera is activated, and the barcode 29 (FIG. 1) displayed on the tag 28 of the FOB 20 is read by the camera (S18). The data of the read barcode 29 is sent to the control unit 31 (S19).

[0050] The control unit 31 generates an encryption key Y for the smartphone 30 using the barcode 29 and the PIN code 18 (S20), and performs a calculation to calculate registration data based on the encryption key Y, the portable device ID, and the random number (S21). The calculation result, together with the portable device ID and the random number, is transmitted to the vehicle control device 10 via the transmitting / receiving unit 32 (S22).

[0051] Meanwhile, in the vehicle control device 10, in parallel with the processing of S17 to S22 on the smartphone 30 side, the control unit 11 reads out the registered encryption key X from the memory 14, and generates an encryption key Y based on this encryption key X and the PIN code generated in S9 (S23). Then, the control unit 11 performs the same calculation as in S21 based on this encryption key Y and the mobile device ID and random number received from the smartphone 30 in S22, and determines whether or not the calculation result matches the calculation result received from the smartphone 30 in S22 (S24).

[0052] If the above determination shows that the two calculation results match, the control unit 11 sends storage data including the registration encryption key Y and portable device information (such as the portable device ID) to the memory 14, and this data is stored in the memory 14 (S25). This completes the electronic key registration of the smartphone 30. The control unit 11 also sends a registration notification signal to the smartphone 30 via the transceiver 12 (S26). Upon receiving the registration notification signal, the smartphone 30 displays a registration completion message 36g of FIG. 6(d) on the screen of the display unit 36 ​​(S27), and the encryption key Y is stored in the memory 34 (S28), thereby completing the series of operations.

[0053] The electronic key registration system 100 of the present invention described above makes it virtually impossible for a third party to create a copy of the smartphone 30 registered as an electronic key. The reason for this is as follows.

[0054] Let's assume that the encryption key Y of the smartphone 30 is generated solely based on the barcode 29 read from the tag 28 of the registered FOB 20, and a third party steals data by skimming from the radio waves of the smartphone 30 communicating with the vehicle control device 10. In this case, the encryption key Y itself cannot be stolen because it is stored in the HSM (Hardware Security Module) of the memory 34, but other data can be stolen. Therefore, if a third party steals data necessary for generating the encryption key Y, such as the mobile device ID, random numbers, and calculation results, the third party can read the barcode 29 from the tag 28 of the FOB 20 (or a copy thereof) and create a copy of the smartphone that has the encryption key Y generated based on the barcode 29.

[0055] However, in the electronic key registration system 100 of the present invention, when registering the smartphone 30, the PIN code 18 displayed on the meter 52 of the vehicle 50 must be entered into the smartphone 30, and the encryption key Y is generated using both the entered PIN code and the scanned barcode 29. Therefore, even if data used to generate the encryption key Y is stolen from the user's smartphone 30 by skimming, the encryption key Y cannot be generated by simply reading the barcode 29.

[0056] Furthermore, since the PIN code 18 is displayed based on short-range wireless communication (BLE) between the smartphone 30 and the vehicle 50, the user is always in the vicinity of the vehicle 50 when the PIN code 18 is displayed on the meter 52. For this reason, it is extremely difficult for a third party to approach the vehicle 50 and visually steal the PIN code 18 displayed on the meter 52.

[0057] This makes it virtually impossible for a third party to duplicate the smartphone 30 used as an electronic key, thereby preventing theft of the vehicle 50 using a duplicated smartphone and improving security.

[0058] In addition to the above-described embodiment, the present invention can employ various other embodiments as follows.

[0059] In the above-described embodiment, an example has been given in which the PIN code 18 is displayed on the mileage display section 52a of the meter 52 of the vehicle 50, but the PIN code 18 may also be displayed on another display section of the vehicle 50.

[0060] In the above-described embodiment, an example has been given in which the registration mode icon 17 is displayed on the meter 52 of the vehicle 50, but instead of an icon, the transition to the registration mode may be notified by displaying text. Also, the transition to the registration mode may be notified by flashing a lamp provided on the vehicle 50.

[0061] In the above-described embodiment, an example was given in which the barcode 29 is displayed on the tag 28 of the FOB 20, but the information displayed on the tag 28 is not limited to a barcode and may be a QR code (registered trademark). Also, other numeric strings, character strings, etc. may be used.

[0062] In the above-described embodiment, a smartphone is taken as an example of the portable device 30, but the portable device 30 is not limited to a smartphone and may be a small tablet terminal, a wearable terminal attached to the body, or the like.

[0063] In the above-described embodiment, an example was given in which BLE was used as the short-range wireless communication method between the vehicle control device 10 and the FOB 20 and the portable device 30, but other short-range wireless communication methods such as NFC (Near Field Communication), Wi-Fi (registered trademark), and ZigBee (registered trademark) may be adopted instead of BLE.

[0064] In the above-described embodiment, a motorcycle is used as an example of the vehicle 50, but the present invention is not limited to motorcycles and can also be applied to vehicles such as three-wheeled motor vehicles and four-wheeled motor vehicles. [Explanation of symbols]

[0065] 10 Vehicle control device 17 Registration mode icon 18 PIN code (first identification information) 20 FOB (first electronic key) 28 Tags 29 Barcode (secondary identification information) 30 Portable device (second electronic key) 36 Display section 37 Reading unit 50 vehicles 51 Operation section 51a Main switch 52 meters 52a Odometer display 100 Electronic Key Registration System X encryption key (first encryption information) Y encryption key (second encryption information)

Claims

1. a first electronic key and a second electronic key owned by a vehicle user; a vehicle control device that is mounted on the vehicle and controls the operation of the vehicle by wirelessly communicating with the first electronic key and the second electronic key; First encryption information common to the first electronic key and the vehicle control device is registered in advance in the vehicle control device, In a vehicle electronic key registration system, a portable device owned by the user is registered in the vehicle control device as the second electronic key, The vehicle control device includes: and displaying the first identification information on a display unit of the vehicle in response to a predetermined operation of the portable device while communicating with the first electronic key. When the first identification information input by the user in the portable device is received from the portable device, the validity of the first identification information is determined; If the first identification information is normal, a request is made to the portable device to read second identification information in which the first encryption information is expressed in a predetermined format; The portable device includes: When the second identification information is read, second encryption information common to the portable device and the vehicle control device is generated using the first identification information and the second identification information; Executing a predetermined calculation based on the generated second encryption information and transmitting the calculation result to the vehicle control device; The vehicle control device includes: determining whether the calculation result received from the portable device is correct or not; If the calculation result is normal, the second encryption information is stored, thereby registering the portable device as the second electronic key.

2. 2. The vehicle electronic key registration system according to claim 1, The portable device includes: performing the predetermined calculation based on the second encryption information, the ID of the portable device, and a random number, and transmitting the calculation result together with the ID and the random number to the vehicle control device; The vehicle control device includes: If the determination result of the first identification information is normal, the second encryption information is generated using the first encryption information and the first identification information; performing a predetermined calculation based on the ID and the random number received from the portable device and the generated second encryption information; The vehicle electronic key registration system is characterized in that, if the calculation result matches the calculation result received from the portable device, the second encryption information is stored.

3. 2. The vehicle electronic key registration system according to claim 1, the first identification information is a randomly generated personal identification number (PIN) code, 10. A vehicle electronic key registration system, comprising: a registration unit for registering a vehicle electronic key; a registration unit for registering a vehicle electronic key;

4. 4. The vehicle electronic key registration system according to claim 3, The PIN code is displayed on a mileage display unit of a meter installed in the vehicle.

5. 5. The vehicle electronic key registration system according to claim 4, The vehicle control device transitions to a registration mode based on an operation of an operation unit provided in the vehicle, and displays a registration mode icon on the meter.

6. 6. The vehicle electronic key registration system according to claim 1, The first electronic key is a key fob, A vehicle electronic key registration system, characterized in that the second electronic key is a smartphone, a tablet terminal, or a wearable terminal.

7. a first electronic key and a second electronic key owned by a vehicle user; a vehicle control device that is mounted on the vehicle and controls the operation of the vehicle by wirelessly communicating with the first electronic key and the second electronic key; First encryption information common to the first electronic key and the vehicle control device is registered in advance in the vehicle control device, A method for registering a vehicle electronic key in a system for registering a portable device owned by a user as the second electronic key in the vehicle control device, comprising: a step of displaying first identification information on a display unit of the vehicle based on a predetermined operation of the portable device while the vehicle control device is communicating with the first electronic key; a step in which the vehicle control device receives, from the portable device, the first identification information input by the user into the portable device, and determines whether the first identification information is correct; a step in which, if the first identification information is normal, the vehicle control device requests the portable device to read second identification information in which the first encryption information is expressed in a predetermined format; a step in which the portable device reads the second identification information and generates second encryption information common to the portable device and the vehicle control device using the first identification information and the read second identification information; a step in which the portable device executes a predetermined calculation based on the generated second encryption information and transmits the calculation result to the vehicle control device; the vehicle control device determines whether the calculation result received from the portable device is correct, and if the calculation result is normal, registers the portable device as the second electronic key by storing the second encryption information.

8. A vehicle control device that is mounted on a vehicle and controls an operation of the vehicle by wirelessly communicating with a first electronic key and a second electronic key owned by a user of the vehicle, First encryption information common to the first electronic key and the vehicle control device is registered in advance, and displaying first identification information on a display unit of the vehicle based on a predetermined operation of a portable device owned by the user while communicating with the first electronic key. When the first identification information input by the user in the portable device is received from the portable device, the validity of the first identification information is determined; If the first identification information is normal, a request is made to the portable device to read second identification information in which the first encryption information is expressed in a predetermined format; receiving, from the portable device, a predetermined calculation result based on second encryption information common to the portable device and the vehicle control device, the second encryption information being generated using the second identification information and the first identification information read by the portable device, and determining whether the calculation result is correct; If the calculation result is normal, the second encryption information is stored, thereby registering the portable device as the second electronic key.

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