JP2021147960A - Portable terminal, system for writing information to portable terminal, and portable terminal manufacturing method - Google Patents

Abstract

To provide a portable terminal, an information writing system, and a portable terminal manufacturing method, which can maintain security without impairing the convenience of registering the portable terminal in an on-board device.SOLUTION: A portable terminal (30) that wirelessly communicates with an on-board device mounted on a vehicle, and is provided with an authentication key storage area for storing common key information (20) to be used for registering the portable terminal (30) in the on-board device, and a vehicle information registration area for storing unique key information (23) to be used for authentication with the on-board device, after completion of the registration.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to a mobile terminal, an information writing system to the mobile terminal, and a method of manufacturing the mobile terminal.

Conventionally, an electronic key system that executes communication between an on-board device and a portable device via short-range wireless communication has been known. For example, Japanese Patent Application Laid-Open No. 2013-100645 (Patent Document 1) is a wireless communication system capable of notifying a coping method for dealing with a state of a vehicle or a portable device without impairing the portability of the portable device as an electronic key. Is disclosed.

Japanese Unexamined Patent Publication No. 2013-100645

In recent years, a car sharing system in which one vehicle is shared by a plurality of people (vehicles are rented out) has been put into practical use. In a conventional car sharing system, for example, by holding a non-contact IC card as a vehicle rental key over a card reader connected to an in-vehicle device, the vehicle door can be unlocked and the engine can be started. It uses a system that allows vehicles to be rented (vehicles can be used). In order to ensure that the rental key is authentic, when the rental key is held over the card reader, authentication (ID verification) is performed on the in-vehicle device.

A person (vehicle user or vehicle manager) who performs car sharing (vehicle rental) prepares a rental key when the vehicle is used for car sharing (vehicle rental). Then, the prepared rental key is paired with the in-vehicle device of the vehicle to be rented, vehicle-specific information (for example, vehicle ID) is written in the rental key, and information unique to the rental key is written in the in-vehicle device. When pairing the rental key with the in-vehicle device (when registering the rental key in the in-vehicle device), an authentication key is used to ensure the validity of the rental key. The same authentication key is stored in advance in the rental key and the in-vehicle device, and pairing can be executed when the authentication key information of both is matched, thereby ensuring the validity of the rental key.

If the authentication keys of a plurality of rental keys are the same, the authentication keys of a plurality of rental vehicles (on-board units) must also be the same, so there are calls for higher security.

Therefore, the purpose of the present disclosure is to further improve the security of the mobile terminal (rental key) for which authentication is executed with the on-board device mounted on the mobile body.

The mobile terminal of the present disclosure is a mobile terminal that is authenticated by an on-board device mounted on a mobile body. The mobile terminal is used for the common information storage unit that stores the common information used for the first authentication in the registration to the on-board device, and for the second authentication in the use of the on-board device after the registration is completed. It is provided with a unique information storage unit that stores unique information that can be read by common information.

According to this configuration, the common information used for the first authentication in the registration of the mobile terminal in the on-board device is stored in the common information storage unit, and is used for the second authentication in the use of the on-board device after the registration is completed. In addition, the unique information that can be read by the common information is stored in the unique information storage unit. Therefore, when the mobile terminal and the on-board device are paired and the mobile terminal is registered on the on-board device, the common information stored in the common information storage unit is used, and after the mobile terminal is registered on the on-board device, the unique information is stored. Authentication can be performed between the mobile terminal and the on-board device using the unique information stored in the unit.

By making the common information stored in the common information storage unit of multiple mobile terminals the same (common), it is possible to register (pair) multiple mobile terminals in one on-board device, and the mobile terminals are installed. It does not impair the convenience of registering with the device. Further, security can be improved by making the unique information stored in the unique information storage unit different for each mobile terminal.

The information writing system to the mobile terminal of the present disclosure is a mobile terminal in the authentication system in which control of the mobile body is executed via the on-board device when the authentication between the on-board device mounted on the mobile body and the mobile terminal is successful. It is an information writing system to. The mobile terminal is used for the common information storage unit that stores the common information used for the first authentication in the registration to the on-board device, and for the second authentication in the use of the on-board device after the registration is completed. It is provided with a unique information storage unit that stores unique information that can be read by the common information, and is provided with an information writing device that can store the common information and the unique information and can communicate with the mobile terminal. The information writing device communicates with the mobile terminal, and when the common information transmitted from the mobile terminal and the common information stored in the information writing device match, the information writing device is configured to write the unique information to the unique information storage unit of the mobile terminal. ing.

According to this configuration, the mobile terminal has a common information storage unit that stores common key information and a unique information storage unit that stores unique key information. The information writing device communicates with the mobile terminal, and when the common information transmitted from the mobile terminal and the common information stored in the information writing device match (when the first authentication is established), the unique information storage unit of the mobile terminal. Write unique information to. The on-board device is configured to communicate with a mobile terminal in which the unique information is written in the unique information storage unit and execute authentication (second authentication) using the unique information.

By making the common information stored in the common information storage unit of a plurality of mobile terminals and the common information stored in the information writing device the same (common), it is unique to the unique information storage unit of the plurality of mobile terminals. Information can be written, and the convenience of registering the mobile terminal in the on-board device is not impaired. After the unique information is written in the unique information storage unit of the mobile terminal, the on-board device can authenticate using the unique information, and by making the unique information different for each mobile terminal, security can be achieved. Can be improved.

The method of manufacturing the mobile terminal of the present disclosure includes a step of connecting communication between the mobile terminal and the information writing device, and transmitting the common key information stored in the authentication key storage area of the mobile terminal to the information writing device. A step of performing collation using the received common key information in the information writing device, a step of transmitting information on vehicle information from the information writing device to the mobile terminal when the collation is established, and a receiving vehicle. Includes a step of writing information about the information into the vehicle information registration area of the mobile terminal.

According to this configuration, the information related to the vehicle information is written in the vehicle information registration area of the mobile terminal by using the common key information stored in the authentication key storage area of the mobile terminal. By making the common key information stored in the authentication key storage area of a plurality of mobile terminals the same (common), the information writing device can obtain the same (common) common key information in advance. The collation in the writing device is established, and the information related to the vehicle information can be written in the vehicle information registration area of a plurality of mobile terminals. In addition, it becomes possible to access the vehicle information stored in the vehicle information area using the unique key information that differs for each mobile terminal, and the security can be improved.

The method of manufacturing the mobile terminal of the present disclosure includes a step of connecting communication between the mobile terminal and the information writing device, and writing information of the common key and the unique key stored in the authentication key storage area of the mobile terminal. A step of transmitting to the device, a step of collating using the received common key information in the information writing device, a step of writing information about the unique key to the on-board device when the collation is established, and an information when the collation is established. The step includes a step of transmitting information about vehicle information from the writing device to the mobile terminal, and a step of writing the received information about the vehicle information in the vehicle information registration area of the mobile terminal.

According to this configuration, the information on the unique key and the vehicle information is written in the vehicle information registration area of the mobile terminal by using the common key information stored in the authentication key storage area of the mobile terminal. In addition, information about the unique key is written to the on-board device. By making the common key information stored in the authentication key storage area of a plurality of mobile terminals the same (common), the information writing device can obtain the same (common) common key information in advance. The collation in the writing device is established, and the information related to the vehicle information can be written in the vehicle information registration area of a plurality of mobile terminals. Further, the vehicle information stored in the vehicle information area can be accessed by using the unique key information different for each mobile terminal, and the security can be improved.

The method of manufacturing a mobile terminal of the present disclosure is a manufacturing method of manufacturing a mobile terminal that is authenticated with an on-board device mounted on a mobile body by writing information to the mobile terminal connected by communication. .. A step of connecting communication with the mobile terminal, a step of acquiring the common key and the unique key stored in the common information storage unit of the mobile terminal as common information, and a collation using the acquired common key. When the step and the collation are established, the step of generating the mobile body-specific information used for authentication between the on-board device and the mobile terminal based on the mobile-specific information and the generated mobile-specific information are transmitted to the mobile terminal. However, it includes a step of writing the mobile information and the unique key as information for making the mobile information readable in the unique information storage unit of the mobile terminal.

According to this configuration, collation is performed using the common key stored in the common information storage unit of the mobile terminal, and when the collation is established, the on-board device and the mobile terminal are authenticated based on the information unique to the mobile body. Generates mobile-specific information used for. Then, the generated mobile-specific information is transmitted to the mobile terminal, and the mobile information and the unique key as information that makes the mobile information readable are written in the unique information storage unit of the mobile terminal. By making the common key information stored in the common information storage unit of a plurality of mobile terminals the same (common), the information writing device can obtain the same (common) common key information in advance. The collation in the writing device is established, and the mobile information and the information related to the unique key can be written in the unique information storage units of the plurality of mobile terminals. Further, it is possible to access the mobile information stored in the unique information storage unit by using the unique key information different for each mobile terminal, and the security can be improved.

According to the present disclosure, it is possible to further improve the security of the mobile terminal in which authentication is executed with the on-board device mounted on the mobile body.

It is an overall block diagram of the information writing system to the mobile terminal which concerns on 1st Embodiment. It is a figure which shows the data written in the memory area of an NFC card 30. It is a figure which showed the step of writing data to the memory area of the NFC card 30 in 1st Embodiment. The data of the memory area in the NFC card 30 after being registered in the car sharing apparatus 14 is shown. It is a figure which shows the step which is executed when the vehicle 1 is used by using the NFC card 30. It is a figure which shows the data of the memory area in the NFC card 30A which is different from the NFC card 30. It is a figure which shows the structure of the memory area in the memory area of the NFC card 30-2 in 2nd Embodiment. It is a figure which shows the step at the time of registering the NFC card 30-2 in the car sharing apparatus 14 in the 2nd Embodiment. It is a figure which shows the data of the memory area in the NFC card 30-2 after being registered in a car-sharing apparatus 14. It is an overall block diagram of the information writing system to the mobile terminal which concerns on 3rd Embodiment. It is a figure which showed the step of writing data to the memory area of the NFC card 30 in 3rd Embodiment. It is a figure which showed the step of writing data to the memory area of the NFC card 30-2 in 4th Embodiment. It is a figure which shows the whole block diagram of the information writing system to the mobile terminal which concerns on a modification.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

(First Embodiment)
FIG. 1 is an overall configuration diagram of an information writing system for a mobile terminal according to the first embodiment. As shown in FIG. 1, the vehicle 1 as a mobile body includes an electronic key system 4 that wirelessly collates with an electronic key 2 to execute or permit the operation of the in-vehicle device 3. The electronic key system 4 is a smart key system that executes ID collation (smart collation) by narrow-range radio in the wake of communication from the vehicle 1. In the smart key system, ID verification is automatically performed without directly operating the electronic key 2. The in-vehicle device 3 is, for example, a door lock device 5 or an engine 6.

The vehicle 1 includes a collation ECU (Electronic Control Unit) 7 for ID collation, a body ECU 8 for controlling in-vehicle electrical components, and an engine ECU 9 for controlling the engine 6. The collation ECU 7, the body ECU 8 and the engine ECU 9 are electrically connected via a communication line 10 in the vehicle. The communication line 10 is, for example, CAN (Controller Area Network) or LIN (Local Interconnect Network). In each memory (not shown) of the collation ECU 7 and the electronic key 2, the electronic key ID of the electronic key 2 registered in the vehicle 1 and the electronic key unique key used at the time of ID verification authentication are registered. The body ECU 8 controls a door lock device 5 that locks and unlocks the vehicle door.

The vehicle 1 includes a transmitting unit 11 for transmitting radio waves and a receiving unit 12 for receiving radio waves. The transmission unit 11 includes, for example, an outdoor use for transmitting radio waves to the outside of the vehicle interior and an indoor use for transmitting radio waves to the inside of the vehicle interior. The transmission unit 11 transmits radio waves in the LF (Low Frequency) band. The receiving unit 12 receives radio waves in the UHF (Ultra High Frequency) band. The electronic key system 4 communicates with the electronic key 2 by bidirectional communication of LF-UHF.

When the wake signal for activating the electronic key 2 is LF transmitted from the transmission unit 11, when the electronic key 2 enters the communication area of the wake signal and receives it, the electronic key 2 is activated from the standby state and collates with the collation ECU 7 (smart). Collation) is executed. Smart verification includes, for example, electronic key ID verification for confirming the correctness of an electronic key ID, challenge-response authentication using an electronic key unique key (encryption key), and the like. When the collation ECU 7 confirms that the ID collation (outdoor smart collation) is established with the electronic key 2 outside the vehicle interior, the body ECU 8 permits the vehicle door to be locked and unlocked.

When the collation ECU 7 confirms that the ID collation (indoor smart collation) is established with the electronic key 2 in the vehicle interior, the collation ECU 7 transmits a signal permitting the operation of the engine 6 to the engine ECU 9. As a result, for example, when the engine switch is operated with the brake pedal depressed, the engine 6 starts.

The vehicle 1 can be compatible with a car sharing system in which one vehicle 1 is shared by a plurality of people (vehicles are rented out). The car sharing system is a system that allows one vehicle to be rented to a plurality of people. In the car sharing system of the present embodiment, a rental key 30 (hereinafter, also referred to as an NFC card 30) composed of an IC card capable of short-range wireless communication (NFC: Near Field Communication) is mounted on the vehicle 1. It is realized by communicating with the device 14 using short-range wireless communication (NFC).

In the present embodiment, the car sharing device 14 has a configuration independent of the hardware configuration of the electronic key system 4 of the vehicle 1. The car sharing device 14 includes a share ECU 15 that controls the operation of the car sharing device 14, a BLE communication unit 17 that performs short-range wireless communication (BLE: Bluetooth Low Energy), and an NFC communication unit that performs short-range wireless communication (NFC). It includes 18 and a storage unit 19. The share ECU 15 is connected to the collation ECU 7 via a communication line 10. The storage unit 19 stores a common key 20 (for example, CCC) and a unique ID 21 (for example, abcde ...) Used when registering (pairing) the NFC card 30 with the car sharing device 14. The common key 20 and the unique ID 21 are written in advance in the memory (not shown) of the matching ECU 7, and are written in the matching ECU 7 when the share ECU 15 and the matching ECU 7 are connected via the communication line 10. The common key 20 and the unique ID 21 may be written in the storage unit 19.

The vehicle 1 includes an input unit 22. The input unit 22 receives input from the user. The input unit 22 is operated by the user and outputs a signal corresponding to the user's operation to the share ECU 15. The communication method may be wired or wireless. Examples of the input unit 22 include various pointing devices, keyboards, touch panels, and the like. The input unit 22 may be an operation unit of a car navigation system, or may be a smart speaker that accepts voice input. The user can shift the car sharing device 14 to the registration mode by operating the input unit 22. In addition, the user can input usage conditions such as information on the rental date and time and information on the number of times the vehicle has been used by operating the input unit 22.

The rental key 30 (NFC card 30) is an IC card capable of communication by short-range wireless communication (NFC). In the present embodiment, the short-range wireless communication (NFC) is a short-range wireless communication defined by a standard such as "ISO / IEC18092", and performs non-contact communication within a distance of several cm. In the present embodiment, the short-range wireless communication (BLE) is a short-range wireless communication based on the Bluetooth (registered trademark) standard, and is a low power consumption communication mode added in the standard of Bluetooth 4.0 or later. In the embodiment, the communication distance is about several meters.

The NFC card 30 includes an antenna 31 and an IC chip 32. When the NFC card 30 is held over the NFC communication unit 18 of the car sharing device 14 (close to a distance of several cm or less), it is guided to the antenna 31 by the alternating magnetic field generated from the antenna of the NFC communication unit 18 (NFC communication unit 44). A current is generated, and the IC chip 32 operates using this induced current as an alternating current to enable communication between the NFC communication unit 18 and the NFC card 30. When the NFC communication unit 18 and the NFC card 30 can communicate with each other, the data stored in the NFC card 30 can be read and written. As described above, the NFC communication unit 18 has a reader / writer function of the NFC card 30, and the car sharing device 14 operates as an “information writing device” of the NFC card 30.

FIG. 2 is a diagram showing the structure of a memory area in the memory area of the NFC card 30 (memory area of the IC chip 32). The authentication key storage area stores the common key 20 (CCC) and the unique key 23 (for example, XXX). (The common key 20 (CCC) and the unique key 23 (XXX) are written in advance in the authentication key storage area.) The vehicle information registration area includes the unique key 23, the unique ID 21, and the unique ID 21 transmitted from the car sharing device 14. This is a memory area for storing information indicating usage conditions.

FIG. 3 is a diagram showing a step of writing data to the memory area of the NFC card 30 (hereinafter, may be abbreviated as S) in the first embodiment. By executing each step shown in FIG. 3, the NFC card 30 is registered in the car sharing device 14. (Pairing of the NFC card 30 and the car sharing device 14 is performed.) The step shown in FIG. 3 starts when the user operates the input unit 22 and the car sharing device 14 shifts to the registration mode. When the NFC card 30 is held over the NFC communication unit 18 of the car sharing device 14, power is supplied to the IC chip 32 and short-range communication (NFC) is connected (S11). When short-range communication (NFC) is connected, the common key information encrypted with the common key 20 and the information of the unique key 23 stored in the authentication key storage area of the NFC card 30 are transmitted to the car sharing device 14 (S12). .. The share ECU 15 uses the common key 20 stored in the storage unit 19 to decode and collate the received common key information. If the NFC card 30 is valid, both common keys 20 match, and collation is established (S13).

When the collation is established, the share ECU 15 writes the received information of the unique key 23 in the storage unit 19 (S14). When the writing of the unique key 23 is completed, the share ECU 15 reads the data of the unique key 23 and the unique ID 21 as vehicle information from the storage unit 19 and transmits the data to the NFC card 30 (S15). Further, the share ECU 15 transmits to the NFC card 30 the usage conditions input by the user from the input unit 22, for example, information regarding the rental date and time and information regarding the number of times the vehicle has been used (S15). Then, the NFC card 30 writes the received unique key 23, unique ID 21, and usage conditions in the vehicle information registration area (S16). Writing of various data to the NFC card 30 is completed (S17), and the NFC card 30 is registered in the car sharing device 14. The unique ID 21 as vehicle information is unique information of the vehicle 1, and may be, for example, a vehicle body number or the like, and corresponds to the "mobile body unique information" of the present disclosure.

FIG. 4 shows the data of the memory area in the NFC card 30 (after the pairing with the car sharing device 14 is completed) after being registered in the car sharing device 14. As shown in FIG. 4, in the vehicle information registration area of the NFC card 30, the unique key 23 is stored (written) as an authentication key item, and the unique ID 21 and usage conditions are stored as stored data items. ..

When the NFC card 30 (rental key 30) is registered in the car sharing device 14, the vehicle 1 can be rented using the NFC card 30. FIG. 5 is a diagram showing steps executed when the vehicle 1 is used with the NFC card 30. The user who has received the loan of the NFC card 30 can use the vehicle 1 by holding the NFC card 30 over the NFC communication unit 18 of the car sharing device 14. When the NFC card 30 is held over the NFC communication unit 18 of the car sharing device 14, power is supplied to the IC chip 32 and short-range communication (NFC) is connected (S21). When short-range communication (NFC) is connected, the unique key information encrypted with the unique key 23 stored in the vehicle registration information area of the NFC card 30, the unique ID 21, and the usage condition information are transmitted to the car sharing device 14 ( S22). The share ECU 15 uses the unique key 23 stored in the storage unit 19 to decode the received information (for example, the unique key information and the unique ID 21) and perform collation.

Since the unique key 23 and the unique ID 21 stored in the vehicle information registration area of the NFC card 30 match the unique key 23 and the unique ID 21 stored in the storage unit 19 of the car sharing device 14, the share ECU 15 is used. By the authentication, the ID verification between the NFC card 30 and the car sharing device 14 is established (authentication is completed) (S23). When this ID verification is established (authentication is completed), the share ECU 15 determines whether or not the current use of the vehicle 1 satisfies the usage condition stored in the NFC card 30 (S24). When the share ECU 15 determines that the current use of the vehicle 1 satisfies the usage condition, the share ECU 15 transmits a permission signal permitting the use of the vehicle 1 to the matching ECU 7 (S25). Upon receiving the permission signal, the collation ECU 7 permits the body ECU 8 to unlock the vehicle door, and transmits a signal to the engine ECU 9 permitting the operation of the engine 6. As a result, the vehicle 1 can be used. When the share ECU 15 determines that the current use of the vehicle 1 does not satisfy the usage conditions stored in the NFC card 30, the share ECU 15 does not transmit a permission signal permitting the use of the vehicle 1 to the collation ECU 7, and uses the vehicle 1. Is not allowed (S26). In this case, an alarm may be issued by an alarm device or the like (not shown).

In the present embodiment, when the NFC card 30 is registered in the car sharing device 14 (when the NFC card 30 and the car sharing device 14 are paired), the common key stored in the authentication key storage area of the NFC card 30 is stored. 20 is used. The common key 20 is the same (common) in a plurality of NFC cards. FIG. 6 is a diagram showing data in a memory area in an NFC card 30A different from the NFC card 30. As shown in FIG. 6, the same common key 20 (CCC) as the NFC card 30 is stored in the authentication key storage area of the NFC card 30A. The unique key 23 and the unique ID 21 are different for each NFC card, and the unique key 23A (YYY) stored in the NFC card 30A is different from the unique key 23 (XXX) stored in the NFC card 30 and is FC. The vehicle ID 21A (fghij ...) Stored in the card 30A is different from the unique ID 21 (abcde ...) of the NFC card 30.

If the key information (authentication key information) used to register the NFC card in the car sharing device 14 is different for each NFC card, the key information (authentication key information) stored in the NFC card and the car sharing device 14 will not match. Therefore, pairing may not be executed and the NFC card may not be registered in the car sharing device 14. In the present embodiment, the common key 20 (CCC) stored in the authentication key storage areas of the plurality of NFC cards 30 and 30A is the same (common), and the common key 20 uses the NFC cards 30 and 30A as a car. It is used when registering in the sharing device 14. Therefore, if the common key 20 (CCC) is stored in the storage unit 19 of the car sharing device 14, the common key 20 matches the common key 20 (CCC) of the plurality of NFC cards 30 and 30A. NFC cards 30 and 30A can be registered.

After registering the NFC cards 30 and 30A in the car sharing device 14, the NFC cards 30 and 30A and the car sharing device are used by using the unique keys 23 and 23A stored in the vehicle information registration area of the NFC cards 30 and 30A. 14 ID verification (authentication) is performed. The unique key (unique key 23 (XXX), unique key 23A (YYY)) is different for each NFC card. Therefore, even if the stored common key 20 (CCC) is leaked, the ID of the NFC card and the car sharing device 14 using the common key 20 (CCC) after the NFC card is registered in the car sharing device 14. Verification (authentication) is not established and security can be maintained.

The NFC communication unit 18 is provided on each of the window glass and the center console of the vehicle 1 that cannot be opened and closed. If the registration of the NFC card 30 shown in FIG. 3 is executed while the NFC card 30 is held over the NFC communication unit 18 provided on the center console, the operability is guaranteed while the user is in the vehicle 1. While, the NFC card 30 as the rental key 30 can be registered.

In the first embodiment, the car sharing device 14 corresponds to the "mounted device" and the "information writing device" in the present disclosure. That is, the car sharing device 14 has the function of the "mounted device", and when the input unit 22 is operated to shift to the registration mode, the car sharing device 14 has the function of the "information writing device". The NFC card 30 corresponds to the "mobile terminal", the authentication key storage area corresponds to the "common information storage unit", and the vehicle information registration area corresponds to the "unique information storage unit". Further, the collation of S13 (FIG. 3) corresponds to the "first authentication" in the present disclosure, and the collation of S23 (FIG. 5) corresponds to the "second authentication".

(Second Embodiment)
In the first embodiment, the unique key 23 is stored in advance in the authentication key storage area of the NFC card 30. Then, in S14 of FIG. 3, the unique key 23 was written in the storage unit 19 of the car sharing device 14. However, the unique key 23 does not have to be stored in advance in the authentication key storage area of the NFC card 30.

FIG. 7 is a diagram showing a structure of a memory area in the memory area of the NFC card 30-2 according to the second embodiment. The common key 20 (CCC) is stored in the authentication key storage area of the NFC card 30-2, but unlike the NFC card 30 in the first embodiment, the unique key 23 (XXX) is not stored. The vehicle information registration area is a memory area for storing information indicating the unique key 23, the unique ID 21, and the usage conditions transmitted from the car sharing device 14, as in the first embodiment.

The configuration of the vehicle 1 is the same as that of the first embodiment, but the unique key 23 (XXX) is written in advance in the storage unit 19 of the car sharing device 14. FIG. 8 is a diagram showing steps for registering the NFC card 30-2 in the car sharing device 14 in the second embodiment. By executing each step shown in FIG. 8, the unique key 23, the unique ID 21, and the like are written in the vehicle information registration area of the NFC card 30-2. The step shown in FIG. 8 starts when the user operates the input unit 22 and the car sharing device 14 shifts to the registration mode. When the NFC card 30-2 is held over the NFC communication unit 18 of the car sharing device 14, power is supplied to the IC chip 32 and short-range communication (NFC) is connected (S31). When short-range communication (NFC) is connected, the common key information encrypted with the common key 20 stored in the authentication key storage area of the NFC card 30-2 is transmitted to the car sharing device 14 (S32). The share ECU 15 uses the common key 20 stored in the storage unit 19 to decode and collate the received common key information. If the NFC card 30-2 is valid, the common keys 20 of both are the same, and the collation is established (S33).

When the collation is established, the share ECU 15 transmits the data of the unique key 23 and the unique ID 21 stored in the storage unit 19 to the NFC card 30-2 as vehicle information (S35). Further, the share ECU 15 transmits the usage conditions input from the input unit 22 by the user, for example, information on the rental date and time and information on the number of times the vehicle has been used to the NFC card 30-2 (S35). Then, the NFC card 30-2 writes the received unique key 23, unique ID 21, and usage conditions in the vehicle information registration area (S36). Writing of various data to the NFC card 30-2 is completed (S37), and the NFC card 30-2 is registered in the car sharing device 14. FIG. 9 shows the data of the memory area in the NFC card 30-2 after being registered in the car sharing device 14. As shown in FIG. 9, the unique key 23 (XXX), the unique ID 21 (abcde ...), And the usage conditions are stored in the vehicle information registration area of the NFC card 30-2. Note that unlike the first embodiment, the unique key 23 is not stored in the authentication key storage area. When the NFC card 30-2 is registered in the car sharing device 14, the vehicle 1 using the NFC card 30-2 can be used as in the first embodiment.

The second embodiment also has the same effect as that of the first embodiment. Further, in the second embodiment, the information of the unique key 23 is not stored in the authentication key storage area of the NFC card 30-2, and the unique key 23 is stored in the storage unit 19 of the car sharing device 14. Is written in the vehicle information registration area. Even if the common key 20 (CCC) is leaked, the information of the unique key 23 (XXX) is not stored in the NFC card 30-2 before being registered in the car sharing device 14, as shown in FIG. .. Therefore, it is possible to prevent illegal acquisition of the information of the unique key 23 from the NFC card 30-2 by using the leaked common key 20 (CCC). In order to register a plurality of NFC cards 30-2 in the car sharing device 14, different unique keys 23 are stored in the storage unit 19 of the car sharing device 14 by the number of NFC cards 30-2 scheduled to be registered. I will do it. Then, in the step of S15 shown in FIG. 8, the unused unique key 23 may be transmitted to the NFC card 30-2 and written in the vehicle information registration area of the NFC card 30-2.

(Third Embodiment)
In the first embodiment, the NFC card 30 is registered in the car sharing device 14 (mounted device) by performing short-range wireless communication (NFC) between the car sharing device 14 and the NFC card. In the third embodiment, the NFC card 30 is registered in the car sharing device 14 (mounted device) by performing short-range wireless communication (NFC) between the mobile terminal 40 and the NFC card 30. FIG. 10 is an overall configuration diagram of an information writing system for a mobile terminal according to a third embodiment. The same configurations as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

The vehicle 1 includes a mobile terminal 40. The mobile terminal 40 includes a terminal control unit 41 that controls the operation of the mobile terminal 40, a network communication unit 42 that performs network communication in the mobile terminal 40, and a BLE communication unit 43 that performs short-range wireless communication (BLE). It includes an NFC communication unit 44 that performs wireless communication (NFC), a storage unit 45, and an input unit 46. For example, the mobile terminal 40 is a smartphone provided with a touch panel display corresponding to the input unit 46. However, the present invention is not limited to this, and any mobile terminal can be adopted as the mobile terminal 40, and may be a tablet terminal, a wearable device (for example, a smart watch), or the like. The storage unit 45 of the mobile terminal 40 stores a common key 20 for pairing with the car sharing device 14. The pairing of the mobile terminal 40 and the car sharing device 14 is performed by communicating between the BLE communication unit 43 or the NFC communication unit 44 of the mobile terminal 40 and the BLE communication unit 17 or the NFC communication unit 18 of the car sharing device 14, and the common key 20 is used. Is done using. When the pairing is completed, the unique ID 21 stored in the storage unit 19 of the car sharing device 14 is written in the storage unit 45 of the mobile terminal 40. The NFC card 30 has the same configuration as that of the first embodiment.

FIG. 11 is a diagram showing a step of writing data to the memory area of the NFC card 30 in the third embodiment. By executing each step shown in FIG. 11, the NFC card 30 is registered in the car sharing device 14. When the NFC card 30 is held over the NFC communication unit 44 of the mobile terminal 40, power is supplied to the IC chip 32 and short-range communication (NFC) is connected (S41). When short-range communication (NFC) is connected, the common key information encrypted with the common key 20 and the information of the unique key 23 stored in the authentication key storage area of the NFC card 30 are transmitted to the mobile terminal 40 (S42). The mobile terminal 40 uses the common key 20 stored in the storage unit 45 to decrypt and collate the received common key information. If the NFC card 30 is valid, both common keys 20 match, and collation is established (S43).

When the collation is established, the mobile terminal 40 writes the received information of the unique key 23 in the storage unit 45 (S44). When the writing of the unique key 23 is completed, the mobile terminal 40 reads the data of the unique key 23 and the unique ID 21 as vehicle information from the storage unit 45 and transmits the data to the NFC card 30 (S45). Further, the mobile terminal 40 transmits to the NFC card 30 the usage conditions input by the user from the input unit 46, for example, information regarding the rental date and time and information regarding the number of times the vehicle has been used (S45). Then, the NFC card 30 writes the received unique key 23, unique ID 21, and usage conditions in the vehicle information registration area (S46). Further, when the collation is established, the mobile terminal 40 transmits the information of the unique key 23 read from the storage unit 45 to the car sharing device 14 by, for example, short-range wireless communication (BLE) (S47). The car sharing device 14 writes the received information of the unique key 23 into the storage unit 19 (S48). Then, when the writing of various data to the NFC card 30 is completed (S49), the NFC card 30 is registered in the car sharing device 14. Since the data stored in the NFC card 30 after being registered in the car sharing device 14 is the same as that in FIG. 4, the description thereof will be omitted. Then, when the NFC card 30 is registered in the car sharing device 14, the vehicle 1 can be used by using the NFC card 30 as in the first embodiment.

Also in the third embodiment, when the mobile terminal 40 and the NFC card 30 are connected by short-range wireless communication (NFC) and the NFC card 30 is registered in the car sharing device 14, the authentication key storage area of the NFC card 30 is used. The stored common key 20 is used. Further, the common key 20 is the same (common) in a plurality of NFC cards, and the unique key 23 and the vehicle ID 21 are different for each NFC card. Therefore, the third embodiment also has the same effect as that of the first embodiment. Further, since the NFC card 30 can be registered in the car sharing device 14 using the mobile terminal 40 (because the NFC card 30 and the car sharing device 14 can be paired using the mobile terminal 40), the operability is good. In the third embodiment, the car sharing device 14 corresponds to the "mounted device" and the mobile terminal 40 corresponds to the "information writing device".

(Fourth Embodiment)
Even when the NFC card 30 is registered in the car sharing device 14 using the mobile terminal 40, the unique key 23 is stored in advance in the authentication key storage area of the NFC card 30 as in the second embodiment. It does not have to be. In the fourth embodiment, the NFC card (rental key) is the same as the NFC card 30-2 of the second embodiment shown in FIG. 7, and the common key 20 (CCC) is stored in the authentication key storage area. Is memorized, but the unique key 23 (XXX) is not memorized. The configuration of the vehicle 1 is the same as that of the second embodiment, and the unique key 23 (XXX) is written in advance in the storage unit 19 of the car sharing device 14. Then, a mobile terminal 40 similar to that of the third embodiment is provided.

In the fourth embodiment, the pairing of the mobile terminal 40 and the car sharing device 14 is performed in the same manner as in the third embodiment. When the pairing is completed, the information of the unique ID 21 and the unique key 23 stored in the storage unit 19 of the car sharing device 14 is written in the storage unit 45 of the mobile terminal 40.

FIG. 12 is a diagram showing a step of writing data to the memory area of the NFC card 30-2 in the fourth embodiment. By executing each step shown in FIG. 12, the unique key 23, the unique ID 21, and the like are written in the vehicle information registration area of the NFC card 30-2, and the NFC card 30-2 is registered in the car sharing device 14. When the NFC card 30-2 is held over the NFC communication unit 44 of the mobile terminal 40, power is supplied to the IC chip 32 and short-range communication (NFC) is connected (S51). When short-range communication (NFC) is connected, the common key information encrypted with the common key 20 stored in the authentication key storage area of the NFC card 30-2 is transmitted to the mobile terminal 40 (S52). The mobile terminal 40 uses the common key 20 stored in the storage unit 45 to decrypt and collate the received common key information. If the NFC card 30-2 is valid, the common keys 20 of both are the same, and the collation is established (S53).

When the collation is established, the mobile terminal 40 transmits the data of the unique key 23 and the unique ID 21 stored in the storage unit 45 to the NFC card 30-2 as vehicle information (S55). Further, the mobile terminal 40 transmits the usage conditions input from the input unit 46 by the user, for example, information on the rental date and time and information on the number of times the vehicle has been used to the NFC card 30-2 (S15). Then, the NFC card 30-2 writes the received unique key 23, unique ID 21, and usage conditions in the vehicle information registration area (S56). Writing of various data to the NFC card 30-2 is completed (S57), and the NFC card 30-2 is registered in the car sharing device 14. The data in the memory area of the NFC card 30-2 after being registered in the car sharing device 14 is as shown in FIG. 9, as in the second embodiment. When the NFC card 30-2 is registered in the car sharing device 14, the vehicle 1 using the NFC card 30-2 can be used as in the first embodiment.

The fourth embodiment also has the same effect as that of the second embodiment. In order to register a plurality of NFC cards 30-2 in the car sharing device 14, different unique keys 23 are stored in the storage unit 19 of the car sharing device 14 by the number of NFC cards 30-2 scheduled to be registered. I will do it. Then, when the mobile terminal 40 and the car sharing device 14 are paired, the information of the plurality of unique keys 23 is written in the storage unit 45 of the mobile terminal 40, and in the step S55 shown in FIG. 12, the unused unique keys 23 are written. The key 23 may be transmitted to the NFC card 30-2 and written in the vehicle information registration area of the NFC card 30-2.

(Modification example)
FIG. 13 shows an overall configuration diagram of an information writing system for a mobile terminal according to a modified example. In the first to fourth embodiments, the share ECU 15 of the car sharing device 14 is connected to the collating ECU 7 by the communication line 10, and the car sharing device 14 is mounted on the vehicle 1 at the factory shipment stage of the vehicle 1. In the modified example shown in FIG. 6, the car sharing device 140 can be retrofitted to the vehicle 1. In the car sharing device 140, the smart communication unit 16 is added to the configuration of the car sharing device 14 of the first to fourth embodiments. The input unit 22 is not shown. Further, as in the first and second embodiments, when the NFC card 30 (30-2) is registered in the car sharing device 140 by communication between the car sharing device 140 and the NFC card 30 (30-2). , The mobile terminal 40 may be omitted.

The electronic key ID and the electronic key unique key are stored in the storage unit 19 of the car sharing device 140, and the smart communication unit 16 and the transmission unit 11 and the reception unit 12 perform the same collation as the electronic key 2. Then, the communication between the share ECU 15 and the collation ECU 7 is established via the smart communication unit 16, the transmission unit 11, and the reception unit 12. The first embodiment except that the communication between the share ECU 15 and the collation ECU 7 is executed not via the communication line 10 in the first embodiment but through the smart communication unit 16, the transmission unit 11, and the reception unit 12. It works in the same way as the form. Therefore, in this modification, the vehicle 1 can be used for car sharing by retrofitting the car sharing device 140.

In the first embodiment and the third embodiment, the information of the unique key 23 transmitted from the car sharing device 14 or the mobile terminal 40 is written in the vehicle information registration area of the NFC card 30. (S15, S16, S45, S46) However, the information of the unique key 23 may be written in advance in the vehicle information recording area in the same manner as the authentication key storage area of the NFC card 30. In this case, the car sharing device 14 or the mobile terminal 40 transmits information regarding the unique ID 21 and usage conditions, and writes the information on the NFC card 30.

In each of the above embodiments, the usage conditions are written on the NFC card 30 (NFC card 30-2, the same applies hereinafter). The usage condition is a condition for renting the vehicle 1, such as the date and time when the vehicle 1 can be used (rental date and time), the number of times of use, or the usable distance (travelable distance). If the usage conditions written on the NFC card 30 are no longer satisfied, for example, if the rental date and time is out of date or the number of times the vehicle 1 is used exceeds the number of times of use, the ID verification between the car sharing device 14 and the NFC card 30 is established. Even so, the share ECU 15 does not give permission to use the vehicle 1. That is, the NFC card 30 does not function as the rental key 30. (The NFC card 30 becomes invalid.) Therefore, it is possible to guarantee that the vehicle 1 is rented in the originally planned form, and it is possible to prevent the illegal rental (unauthorized use) of the vehicle 1.

In the third embodiment and the fourth embodiment, the unique ID 21 and the unique key 23 stored in the storage unit 45 of the mobile terminal 40 are stored in the car sharing device 14 after the pairing of the mobile terminal 40 and the car sharing device 14 is completed. The unique ID 21 and the unique key 23 stored in the storage unit 19 of the mobile terminal 40 are written in the storage unit 45 of the mobile terminal 40. On the other hand, by communicating via the network communication unit 42 of the mobile terminal 40, network communication is performed with the server specified by the user, the unique key 23 and the unique ID 21 stored in the server are downloaded, and stored in the storage unit 45. The unique key 23 and the unique ID 21 may be written.

In each of the above embodiments, in the NFC card 30, an induced current is generated in the antenna 31 by an alternating magnetic field generated from the antenna of the NFC communication unit 18 (NFC communication unit 44), and the IC chip 32 uses this induced current as an electromotive force. Although described as a so-called "passive tag" type that operates, it may be an "active tag" type that has a power supply. For example, if the mobile terminal 40 is a smartphone equipped with an "active tag" type IC chip, the mobile terminal 40 can be used as a rental key.

In each of the above embodiments, it is also possible to manufacture a rental key using short-range wireless communication (BLE). For example, in the first embodiment and the second embodiment, the NFC card 30 is replaced with a smartphone, and the smartphone and the BLE communication unit 17 of the car sharing device 14 or the BLE communication unit 43 of the mobile terminal 40 and short-range wireless communication ( By performing BLE), vehicle information (unique key 23, unique ID 21) and usage conditions can be written on the smartphone, and the smartphone can be used as a rental key.

In each of the above embodiments, the share ECU 15 of the car sharing device 14 performs ID verification (authentication) with the NFC card 30, but the NFC card is used by the verification ECU 7 using information such as the unique key 23 and the unique ID 21. ID verification (authentication) with 30 may be performed.

By exemplifying the embodiments in the present disclosure, the following aspects can be exemplified.
1) A mobile terminal that is authenticated by the on-board device (14) mounted on the mobile body (1), and stores common information (20) used for the first authentication in registration on the on-board device (14). Unique information (23, 21)) that is used for the second authentication in the use of the on-board device (14) after the registration is completed and that can be read by the common information (20). A mobile terminal (30, 30-2) including a unique information storage unit to be stored.

2) The unique key (23) and the common key (20) that makes the unique key (23) readable are stored in the common information storage unit as at least a part of the common information, as described in 1) above. Mobile terminal (30).

3) In the unique information storage unit, at least the mobile unique information (21), which is used for the second authentication in the use of the on-board device (14) and is unique to the mobile (1), is the unique information. The mobile terminal according to 1 or 2) above, which is stored as a part.

4) The mobile terminal according to 3) above, wherein the unique information storage unit further stores a unique key (23) that enables reading of the mobile unique information (21) as at least a part of the unique information.

5) The mobile terminal according to 4) above, wherein the unique key (23) stored in the common information storage unit and the unique key (23) stored in the unique information storage unit are common.

6) A mobile terminal (30, 30-2) that wirelessly communicates with the mounted device (14) mounted on the vehicle, in order to register the mobile terminal (30, 30-2) in the mounted device (14). Vehicle information registration that stores the authentication key storage area that stores the common key information (20) to be used and the unique key information (23) that is used to authenticate between the on-board device (14) after registration. A mobile terminal that includes an area.

According to this configuration, when the mobile terminal (30, 30-2) and the mounted device (14) are paired and the mobile terminal (30, 30-2) is registered in the mounted device (14), the authentication key is stored. After the mobile terminals (30, 30-2) are registered in the on-board device (14) using the common key information (20) stored in the area, the unique key information (23) stored in the vehicle information registration area is used. It can be used to authenticate the mobile terminal (30, 30-2) and the on-board device (14). By making the common key information (20) stored in the authentication key storage area of a plurality of mobile terminals the same (common), the plurality of mobile terminals can be registered (paired) in one on-board device (14). This does not impair the convenience of registering the mobile terminal in the on-board device (14). Further, security can be maintained by making the unique key information (23) stored in the vehicle information registration area different for each mobile terminal.

7) The unique key information (23) is stored in the authentication key storage area, and the unique key information (23) stored in the authentication key storage area is read and read using the common key information (20). The mobile terminal according to 6) above, wherein the unique key information (23) is stored in the vehicle information registration area by writing the issued unique key information (23) in the vehicle information registration area.

According to this configuration, by storing different unique key information (23) for each mobile terminal (30), the unique key information (23) written in the vehicle information registration area can be stored for each mobile terminal (30). It can be different.

8) The mobile terminal according to 6) or 7) above, in which vehicle information (21) is stored in the vehicle information registration area.

According to this configuration, after the mobile terminal (30) is registered in the on-board device (14), authentication is performed using the unique key information (23) and the vehicle information (21).

9) The above 1 to 8 are provided with an antenna (31) and an IC chip (32), and the IC chip (32) operates by an induced current generated in the antenna (31) to perform short-range wireless communication with the on-board device (14). ) Described in the mobile terminal.

According to this configuration, since the mobile terminal operates by the induced current generated in the antenna (31), there is no concern that the battery runs out.

10) A mobile terminal (30, 30-2) and an on-board device (14) mounted on the vehicle are provided, and authentication is performed between the mobile terminal (30, 30-2) and the on-board device (14). An information writing system to a mobile terminal that enables the use of a vehicle when authentication is completed. The mobile terminals) 30 and 30-2) have an authentication key storage area for storing common key information (20) and a unique key. An information writing device that has a vehicle information registration area for storing information (23), stores common key information (20) and vehicle vehicle information (21), and can communicate with mobile terminals (30, 30-2). (14, 40), the information writing device (14, 40) communicates with the mobile terminal (30, 30-2), and the common key information (20, 30-2) transmitted from the mobile terminal (30, 30-2). ) And the common key information (20) stored in the information writing device (14, 40) are configured to write the vehicle information (21) to the vehicle information registration area of the mobile terminal (30, 30-2). The on-board device (14) communicates with the mobile terminals (30, 30-2) in which the vehicle information (21) is written in the vehicle information registration area, and executes authentication using the unique key information (23). An information writing system for mobile terminals that is configured to do so.

According to this configuration, the mobile terminals (30, 30-2) have an authentication key storage area for storing the common key information (20) and a vehicle information registration area for storing the unique key information (23). .. The information writing device (14, 40) communicates with the mobile terminal (30, 30-2), and the common key information (20) and the information writing device (14,) transmitted from the mobile terminal (30, 30-2). When the common key information (20) stored in 40) matches, the vehicle information (21) is written in the vehicle information registration area of the mobile terminal (30, 30-2). The on-board device (14) is configured to communicate with the mobile terminals (30, 30-2) in which the vehicle information (21) is written in the vehicle information registration area, and execute authentication using the unique key information (23). Has been done.

By making the common key information (20) stored in the authentication key storage area of a plurality of mobile terminals and the common key information (20) stored in the information writing devices (14, 40) the same (common). Since the common key information (20) stored in the authentication key storage area of the plurality of mobile terminals and the common key information (20) stored in the information writing devices (14, 40) match, a plurality of mobile devices can carry the information. Vehicle information (21) can be written in the vehicle information registration area of the terminal. Therefore, the convenience of registering the mobile terminal (30, 30-2) in the on-board device (14) is not impaired. After the vehicle information (21) is written in the vehicle information registration area of the mobile terminals (30, 30-2), the on-board device (14) can be authenticated using the unique key information (23). Therefore, by making the unique key information (23) different for each mobile terminal, security can be maintained even if the common key information (20) is leaked.

11) The information writing device (14) is an on-board device (14), and the unique key information (23) is stored in advance in the authentication key storage area of the mobile terminal (30), and the on-board device (14) is registered. When communicating with the mobile terminal (30) in the mode, if the common key information (20) transmitted from the mobile terminal (30) and the common key information (20) stored in the on-board device (14) match, the mobile terminal (30) is carried. The above 10), wherein the vehicle information (21) is written in the vehicle information registration area of the terminal (30) and the unique key information (23) transmitted from the mobile terminal (30) is stored. Information writing system for mobile terminals.

According to this configuration, when the on-board device (14) is set to the registration mode and communicates with the mobile terminal (30), the on-board device (14) has the common key information (common key information (30) transmitted from the mobile terminal (30). When the common key information (20) stored in the on-board device (14) matches the 20), the vehicle information (21) is written in the vehicle information registration area of the mobile terminal (30). Further, the on-board device (14) stores the unique key information (23) transmitted from the mobile terminal (30). When the on-board device (14) is set to the registration mode, the vehicle information (21) can be written to the mobile terminal (30). When the on-board device (14) is not set to the registration mode, authentication is performed by communication between the on-board device (14) and the mobile terminal (30), and when the authentication is completed, the vehicle can be rented. Therefore, the on-board device (14) can also serve as the function of the information writing device. Further, by storing different unique key information (23) for each mobile terminal (30), the unique key information (23) used for authentication can be made different for each mobile terminal (30). , A plurality of mobile terminals can be registered in the on-board device (14) while ensuring security.

12) The on-board device (14) is stored in the common key information (20) and the on-board device (14) transmitted from the mobile terminal (30) when communicating with the mobile terminal (30) in the registration mode. When the common key information (20) matches, the unique key information (23) and the vehicle information (21) are written in the vehicle information registration area of the mobile terminal (30), and the unique key information (30) transmitted from the mobile terminal (30) is written. The information writing system for a mobile terminal according to 11) above, which is configured to store 23).

According to this configuration, when the on-board device (14) is set to the registration mode and communicates with the mobile terminal (30), the on-board device (14) has the common key information (common key information (30) transmitted from the mobile terminal (30). When the common key information (20) stored in the information writing device (14) matches the 20), the unique key information (23) and the vehicle information (21) are written in the vehicle information registration area of the mobile terminal (30). Further, the on-board device (14) stores the unique key information (23) transmitted from the mobile terminal (30). When the on-board device (14) is set to the registration mode, the unique key information (23) and the vehicle information (21) can be written to the mobile terminal (30). When the on-board device (14) is not set to the registration mode, authentication is performed by communication between the on-board device (14) and the mobile terminal (30), and when the authentication is completed, the vehicle can be rented. Therefore, the on-board device (14) can also serve as the function of the information writing device. Further, by storing the unique key information (23) that is different for each mobile terminal (30), the unique key information (23) written in the vehicle information registration area is made different for each mobile terminal (30). It is possible to register a plurality of mobile terminals in the on-board device (14) while ensuring security.

13) The information writing device is a mobile terminal (40), and the unique key information (23) is stored in advance in the authentication key storage area of the mobile terminal (30), and the mobile terminal (30) is a mobile terminal (30). When the common key information (20) transmitted from the mobile terminal (30) and the common key information (20) stored in the mobile terminal (20) match after communicating with the mobile terminal (30), the vehicle information of the mobile terminal (30) The unique key information (23) and vehicle information (21) are written in the registration area, and the unique key (23) transmitted from the mobile terminal (30) is stored in the on-board device (14). The information writing system for the mobile terminal according to 10).

According to this configuration, the mobile terminal (30) is mounted on the device (14) by writing the unique key information (23) and the vehicle information (21) in the vehicle information registration area of the mobile terminal (30) by the mobile terminal (40). ), So operability is good. Further, by storing the unique key information (23) that is different for each mobile terminal (30), the unique key information (23) written in the vehicle information registration area is made different for each mobile terminal (30). It is possible to register a plurality of mobile terminals in the on-board device (14) while ensuring security.

14) In the information writing system to the mobile terminal of 13) above, the unique key information (23) is written in advance in the vehicle information registration area of the mobile terminal (30) and transmitted from the mobile terminal (30). When the common key information (20) and the common key information (20) stored in the mobile terminal (20) match, the vehicle information (21) may be written in the vehicle information registration area of the mobile terminal (30).

According to this configuration, since the unique key information (23) is written in advance in the vehicle information registration area of the mobile terminal (30), the unique key information (23) is stored in the vehicle information registration area of the mobile terminal (30). The operation of writing is omitted.

15) The information writing device (14) is an on-board device (14) that stores the unique key information (23) in advance, and the on-board device (14) communicates with the mobile terminal (30) and communicates with the mobile terminal (30). When the common key information (20) transmitted from 30) and the common key information (20) stored in the on-board device (14) match, the unique key information (23) and the unique key information (23) are sent to the vehicle information registration area of the mobile terminal (30). The information writing system for a mobile terminal according to 10) above, which is configured to write vehicle information (21).

According to this configuration, since the information writing device (14) stores the unique key information (23) in advance, the stored unique key information (23) can be stored in the vehicle of the mobile terminal (30-2). You can write in the information registration area. Therefore, it is not necessary to store the unique key information (23) in the authentication key storage area of the mobile terminal (30-2) in advance, and the unique key information (23) stored in the authentication key storage area of the mobile terminal (30). Can be suppressed from flowing out.

16) The information writing device is a mobile terminal (40), the on-board device (14) stores unique key information (23) and vehicle information (21) in advance, and the mobile terminal (30) is an on-board device. The information writing system for a mobile terminal according to 10) above, which is configured to acquire and store unique key information (23) and vehicle information (21) by communicating with (14).

According to this configuration, the mobile terminal (40) as the information writing device acquires and stores the unique key information (23) and the vehicle information (21) from the on-board device (14), and therefore stores the information. The unique key information (23) and the vehicle information (21) can be written in the vehicle information registration area of the mobile terminal (30-2). Therefore, it is not necessary to store the unique key information (23) in the authentication key storage area of the mobile terminal (30-2) in advance, and the unique key information (23) stored in the authentication key storage area of the mobile terminal (30). Can be suppressed from flowing out.

17) Steps (S11, S31, S41, S51) for connecting communication between the mobile terminal (30, 30-2) and the information writing device (14, 40), and the mobile terminal (30, 30-2). In the steps (S12, S32, S42, S52) of transmitting the information of the common key (20) stored in the authentication key storage area of the above to the information writing device (14, 40), and in the information writing device (14, 40). , Steps (S13, S33, S43, S53) of performing collation using the received information of the common key (20), and when the collation is established, the information writing device (14, 40) sends the mobile terminal (30, 30-2). ), The step (S15, S35, S45, S55) of transmitting the information about the unique key (23) and the vehicle information (21), and the information about the received unique key (23) and the vehicle information (22) to the mobile terminal. (30, 30-2) A method of manufacturing a mobile terminal including the step of writing in the vehicle information registration area.

According to this configuration, the vehicle information registration area of the mobile terminal (30, 30-2) is used by using the information of the common key (20) stored in the authentication key storage area of the mobile terminal (30, 30-2). The information about the unique key (23) and the vehicle information (21) is written in. By making the information of the common key (20) stored in the authentication key storage area of a plurality of mobile terminals the same (common), the information writing devices (14, 40) can use the same (common) common key information. If obtained in advance, the collation in the information writing device (14, 40) is established, and the information related to the unique key (23) and the vehicle information (21) can be written in the vehicle information registration area of a plurality of mobile terminals. can. Further, security can be maintained by making the information of the unique key (33) stored in the vehicle information registration area different for each mobile terminal.

18) In the method of manufacturing the mobile terminal according to 12) above, "when the verification is established, the unique key (23) and the vehicle information (23) and the vehicle information (23) are transferred from the information writing device (14, 40) to the mobile terminal (30, 30-2). The step (S15, S35, S45, S55) for transmitting information regarding 21) and the information regarding the received unique key (23) and vehicle information (22) are stored in the vehicle information registration area of the mobile terminal (30, 30-2). When the collation is established, the step (S15, S35, S45, S55) of transmitting the information related to the vehicle information (21) from the information writing device (14, 40) to the mobile terminal (30, 30-2) ) And the received information on the vehicle information (22) may be changed to "a step of writing in the vehicle information registration area of the mobile terminal (30, 30-2)".

According to this configuration, the step of writing the unique key information (23) to the vehicle information registration area of the mobile terminal (30) can be omitted. The unique key information (23) may be written in advance in the vehicle information registration area of the mobile terminal (30).

19) Steps (S11, S41) for connecting communication between the mobile terminal (30) and the information writing device (14, 40), and a common key stored in the authentication key storage area of the mobile terminal (30). The step (S12, S42) of transmitting the information of the (20) and the unique key (23) to the information writing device (14, 40), and the information of the common key (20) received by the information writing device (14, 40). Steps (S13. S43) for collation using Steps (S15, S45) for transmitting information about the unique key (23) and vehicle information (21) from (14, 40) to the mobile terminal (30), and received unique key (23) and vehicle information (21). A method of manufacturing a mobile terminal including the steps (S16, S46) of writing information about the information in the vehicle information registration area of the mobile terminal (30).

According to this configuration, the unique key (23) and the unique key (23) are stored in the vehicle information registration area of the mobile terminal (30) by using the information of the common key (20) stored in the authentication key storage area of the mobile terminal (30). Write information about vehicle information (21). In addition, information about the unique key (23) is written to the on-board device (14). By making the information of the common key (20) stored in the authentication key storage area of a plurality of mobile terminals the same (common), the information writing devices (14, 40) can use the same (common) common key information. If obtained in advance, the collation in the information writing device (14, 40) is established, and the information related to the unique key (23) and the vehicle information (21) can be written in the vehicle information registration area of a plurality of mobile terminals. can. Further, security can be maintained by making the information of the unique key (33) stored in the vehicle information registration area different for each mobile terminal.

20) The mobile terminal (30) is a card including an antenna (31) and an IC chip (32), and the IC chip (32) is operated by an induced current generated in the antenna (31) to operate the information writing device (14, The information writing system for a mobile terminal according to the above 10 to 16), which performs short-range wireless communication with 40).

According to this configuration, the mobile terminal (30) operates by the induced current generated in the antenna (31), so that there is no concern about running out of batteries.

21) The usage conditions are written as vehicle information in the vehicle information registration area of the mobile terminal (30, 30-2), and the authentication between the mobile terminal (30, 30-2) and the on-board device (14) is completed. However, the information writing system for the mobile terminal according to the above 10 to 16, wherein the use of the vehicle is not permitted when the usage conditions written in the mobile terminal (30, 30-2) are not satisfied.

According to this configuration, it is possible to impose usage restrictions on the rental of vehicles. For example, it is possible to set the date and time (schedule, schedule) that can be rented, the number of times of use (number of times of rent), and the like as usage conditions.

22) The information writing device (40) is a smartphone provided with a touch panel display.

According to this configuration, the information writing device (40) can be configured by installing the predetermined application software for car sharing on the smartphone, so that the smartphone owned by the user can be effectively used. ..

23) Further provided with an input unit (22), when the on-board device (14) shifts to the registration mode by operating the input unit (22), the on-board device (14) has the common key information transmitted from the mobile terminal (30). The information writing system for a mobile terminal according to 11 above, which collates (20) with the common key information (20) stored in the information writing device (14).

According to this configuration, the on-board device (14) can be shifted to the registration mode by operating the input unit (22).

The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the embodiment described above, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 vehicle, 7 collation ECU, 14 car sharing device, 15 sharing ECU, 17 BLE communication unit, 18 NFC communication unit, 19 storage unit, 20 common key, 21 unique ID, 22 input unit, 23 unique key, 30, 30- 2 NFC card, 31 antenna, 32 IC chip, 40 mobile terminal, 41 terminal control unit, 43 BLE communication unit, 44 NFC communication unit, 45 storage unit, 46 input unit.

Claims (15)

It is a mobile terminal that is authenticated by the on-board equipment mounted on the mobile body.
A common information storage unit that stores common information used for the first authentication in registration to the on-board device, and
A mobile terminal including a unique information storage unit that is used for a second authentication in the use of the on-board device after the registration is completed and that stores unique information that can be read by the common information. The mobile terminal according to claim 1, wherein a unique key and a common key that enables the unique key to be read are stored in the common information storage unit as at least a part of the common information. In the unique information storage unit, mobile-specific information that is used for the second authentication in the use of the on-board device and is information unique to the mobile is stored as at least a part of the unique information. The mobile terminal according to claim 1 or 2. The mobile terminal according to claim 3, wherein a unique key that enables reading of the mobile unique information is further stored in the unique information storage unit as at least a part of the unique information. The mobile terminal according to claim 4, wherein the unique key stored in the common information storage unit and the unique key stored in the unique information storage unit are common. The mobile terminal according to any one of claims 1 to 5, which comprises an antenna and an IC chip, and the IC chip operates by an induced current generated in the antenna to perform short-range wireless communication with the on-board device. An information writing system to the mobile terminal in an authentication system in which control of the mobile body is executed via the on-board device when authentication between the on-board device mounted on the mobile body and the mobile terminal is successful.
The mobile terminal is used for a common information storage unit that stores common information used for the first authentication in registration to the on-board device and for a second authentication in use of the on-board device after the registration is completed. It also includes a unique information storage unit that stores unique information that can be read by the common information.
An information writing device capable of storing the common information and the unique information and communicating with the mobile terminal is provided.
The information writing device communicates with the mobile terminal, and when the common information transmitted from the mobile terminal matches the common information stored in the information writing device, the information writing device is sent to the unique information storage unit of the mobile terminal. An information writing system for a mobile terminal, which is configured to write the unique information. The information writing device is the on-board device and
The unique key information is stored in advance in the authentication key storage area of the mobile terminal.
When the on-board device communicates with the mobile terminal in the registration mode, when the common key information transmitted from the mobile terminal matches the common key information stored in the on-board device, the on-board device of the mobile terminal The information writing system for a mobile terminal according to claim 7, wherein the vehicle information is written in the vehicle information registration area and the unique key information transmitted from the mobile terminal is stored. When the on-board device communicates with the mobile terminal in the registration mode, when the common key information transmitted from the mobile terminal and the common key information stored in the on-board device match, the mobile terminal The information to the mobile terminal according to claim 8, which is configured to write the unique key information and the vehicle information in the vehicle information registration area and store the unique key information transmitted from the mobile terminal. Writing system. The information writing device is a mobile terminal.
The unique key information is stored in advance in the authentication key storage area of the mobile terminal.
The mobile terminal communicates with the mobile terminal, and when the common key information transmitted from the mobile terminal and the common key information stored in the mobile terminal match, the vehicle information registration area of the mobile terminal is reached. The information writing system for a mobile terminal according to claim 7, wherein the unique key information and the vehicle information are written, and the unique key transmitted from the mobile terminal is stored in the on-board device. The information writing device is an on-board device that stores the unique key information in advance.
The on-board device communicates with the mobile terminal, and when the common key information transmitted from the mobile terminal and the common key information stored in the on-board device match, the vehicle information registration area of the mobile terminal is reached. The information writing system for a mobile terminal according to claim 7, which is configured to write the unique key information and the vehicle information. The information writing device is a mobile terminal and
The on-board device stores the unique key information and the vehicle information in advance.
The information writing system for a mobile terminal according to claim 7, wherein the mobile terminal is configured to acquire and store the unique key information and the vehicle information by communicating with the on-board device. Steps to connect communication between the mobile terminal and the information writing device,
A step of transmitting the common key information stored in the authentication key storage area of the mobile terminal to the information writing device, and
In the information writing device, a step of collating using the received information of the common key and
When the collation is established, the step of transmitting information related to the vehicle information from the information writing device to the mobile terminal, and
A method for manufacturing a mobile terminal, which includes a step of writing received information on the vehicle information in a vehicle information registration area of the mobile terminal. Steps to connect communication between the mobile terminal and the information writing device,
A step of transmitting the information of the common key and the unique key stored in the authentication key storage area of the mobile terminal to the information writing device, and
In the information writing device, a step of collating using the received information of the common key and
When the collation is established, the step of writing the information about the unique key to the on-board device and
When the collation is established, the step of transmitting information related to the vehicle information from the information writing device to the mobile terminal, and
A method for manufacturing a mobile terminal, which includes a step of writing received information on the vehicle information in a vehicle information registration area of the mobile terminal. It is a manufacturing method for manufacturing a mobile terminal that is authenticated with an on-board device mounted on a mobile body by writing information to a mobile terminal connected by communication.
The step of making a communication connection with the mobile terminal and
A step of acquiring the common key and the unique key stored in the common information storage unit of the mobile terminal as common information, and
The step of collating using the acquired common key and
When the collation is established, a step of generating mobile-specific information used for authentication between the on-board device and the mobile terminal based on the mobile-specific information, and a step of generating the mobile-specific information.
A step of transmitting the generated mobile-specific information to the mobile terminal and writing the mobile information and the unique key as information for making the mobile information readable in the unique information storage unit of the mobile terminal. A method of manufacturing a mobile terminal, including.

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