WO2017208481A1 - Vehicle authentication system and mobile device - Google Patents

Abstract

This vehicle authentication system comprises: an on-vehicle device provided with a transmission processing unit that causes transmission of a request signal; and a mobile device provided with a reply unit (23) that transmits a response signal in response to the request signal. The on-vehicle device is further provided with a sound output processing unit that, when the transmission processing unit causes transmission of the request signal, also causes a sound output device, which outputs a predetermined sound in an audible range, to output the predetermined sound. The mobile device is further provided with: a sound collecting unit (24); and a mobile-side sound verifying unit (214) that verifies, on the basis of a predetermined normal sound, a sound collected by the sound collecting unit. In a case where the mobile-side sound verifying unit does not succeed in verification, even when receiving the request signal, the reply unit does not transmit a response signal including an identification code.

Description

Vehicle authentication system and portable device Cross-reference of related applications

This application is based on Japanese Application No. 2016-110313 filed on June 1, 2016, the contents of which are incorporated herein by reference.

The present disclosure relates to a vehicle authentication system that performs authentication using wireless communication between an in-vehicle device and a portable device carried by a user, and a portable device included in the vehicle authentication system.

2. Description of the Related Art Conventionally, there has been known a vehicle authentication system that enables vehicle control such as locking / unlocking of a vehicle door, engine starting, and the like based on the establishment of code verification by wireless communication between an in-vehicle device and a portable device such as an electronic key. ing. Since the distance range in which wireless communication is possible is limited to a short distance around the vehicle, authentication using wireless communication is normally possible only when the portable device is located in the vicinity of the vehicle.

However, in such an authentication system, there is a concern about a relay attack in which a malicious third party indirectly establishes authentication by indirectly realizing communication between the portable device and the in-vehicle device using a repeater. . In the relay attack, although it is not intended by a legitimate user, authentication is established and vehicle control such as unlocking the vehicle door and starting the engine becomes possible.

On the other hand, for example, in Patent Document 1, when a polling signal is received from the vehicle without the unlock switch of the portable device being pressed, a technique for increasing the RF signal transmitted from the portable device to a high attenuation factor is disclosed. Is disclosed. According to the technique disclosed in Patent Document 1, when a relay attack is received, the unlock switch of the portable device is not pressed, and the RF signal transmitted from the portable device has a high attenuation factor. Therefore, relay attack can be prevented if the portable device is separated from the vehicle to the extent that an RF signal with a high attenuation rate does not reach.

However, in the technique disclosed in Patent Document 1, when the portable device is separated from the vehicle only to the extent that an RF signal with a high attenuation rate reaches, the RF signal reaches the vehicle even when a relay attack is received. The relay attack is performed without being noticed by the user.

JP 2012-51421 A

An object of the present disclosure is to provide an authentication system for a vehicle and a portable device that enable a user to recognize that unauthorized authentication using wireless communication has been performed on the vehicle regardless of the distance between the portable device and the vehicle. Is to provide.

An authentication system for a vehicle according to an aspect of the present disclosure is used in a vehicle, and includes an in-vehicle device that includes a transmission processing unit that transmits a request signal for requesting code verification through wireless communication, and is carried by a user to the request signal. And a portable device including a reply unit that transmits a response signal including an identification code for identifying the device itself. The in-vehicle device includes a permission unit that permits control of the vehicle based on the fact that code verification using the identification code included in the response signal transmitted from the reply unit is established. The in-vehicle device further includes a sound output processing unit that outputs a predetermined sound from a sound output device that outputs a predetermined sound in the audible range when the request signal is transmitted by the transmission processing unit. The portable device further includes a sound collecting unit that collects sound and a portable side sound collating unit that collates the sound collected by the sound collecting unit with a regular predetermined sound. Even when the reply unit receives the request signal, the reply unit does not transmit the response signal including the identification code if the portable side sound collating unit fails to collate.

The portable device according to an aspect of the present disclosure permits control of the vehicle based on the establishment of code verification using wireless communication between the in-vehicle device used in the vehicle and the portable device carried by the user. Used in vehicle authentication systems. The portable device includes a receiving unit that receives a request signal transmitted from an in-vehicle device that outputs a predetermined sound in an audible range when transmitting a request signal that requests code verification, and a reply unit that transmits a response signal to the request signal. A sound collecting unit that collects sound, and a portable side sound collating unit that collates the sound collected by the portable side sound collecting unit with a regular predetermined sound. The reply unit transmits a response signal including an identification code for identifying its own device, which is used for code collation, even when the request signal is received, but collation is not established in the portable sound collation unit do not do.

According to the above-described vehicle authentication system and portable device, when the sound that is verified by the portable sound generator is not collected by the portable sound collector, the code verification in the in-vehicle device is performed. Is not established, and control of the vehicle is not permitted. On the other hand, when a malicious third party attempts unauthorized authentication using wireless communication such as a relay attack, the same audible range as the regular predetermined sound within the range that can be collected by the mobile-side sound collection unit It is necessary to output sound in a pseudo manner. However, when a sound in such an audible range is pseudo-output within a range where sound can be collected by the portable sound collecting unit, the user of the portable device can notice this sound. Therefore, an unauthorized authentication using wireless communication is performed on the own vehicle user based on the fact that the user of the portable device can hear the predetermined sound in the audible range even though the user is not close to the own vehicle. It becomes possible to recognize that. As a result, regardless of the distance between the portable device and the vehicle, the user can recognize that unauthorized authentication using wireless communication has been performed on the vehicle.

An authentication system for a vehicle according to another aspect of the present disclosure is used in a vehicle, and includes an in-vehicle device that includes a transmission processing unit that transmits a request signal for requesting code verification by wireless communication, and is carried by a user to the request signal. And a portable device including a reply unit that transmits a response signal including an identification code for identifying the device itself. The in-vehicle device further includes a permission unit that permits the control of the vehicle based on the fact that the code verification using the identification code included in the response signal transmitted from the reply unit is established. The portable device further includes a sound output unit that outputs a predetermined sound in the audible range when the response unit transmits a response signal.

A portable device according to another aspect of the present disclosure permits vehicle control based on the fact that code verification using wireless communication is established between an in-vehicle device used in the vehicle and a portable device carried by the user. Used for vehicle authentication systems. When the portable device transmits a response signal by a receiving unit that receives a request signal transmitted from an in-vehicle device that transmits a request signal that requests code verification, a reply unit that transmits a response signal to the request signal, and a reply unit And a sound output unit for outputting a predetermined sound in the audible range.

According to the above-described vehicle authentication system and portable device, when the portable device transmits a response signal to the request signal, it outputs a predetermined sound in the audible range, so the user of the portable device is close to the own vehicle. It is possible to recognize that unauthorized authentication using wireless communication has been performed on the vehicle based on the fact that the predetermined sound in the audible range can be heard in spite of the absence. As a result, regardless of the distance between the portable device and the vehicle, the user can recognize that unauthorized authentication using wireless communication has been performed on the vehicle.

The above and other objects, configurations, and advantages of the present disclosure will become more apparent from the following detailed description with reference to the following drawings. In the drawing
FIG. 1 is a diagram illustrating an example of a schematic configuration of a vehicle authentication system according to the first embodiment. FIG. 2 is a diagram illustrating an example of a schematic configuration of the vehicle-side unit. FIG. 3 is a diagram illustrating an example of a schematic configuration of the verification ECU. FIG. 4 is a diagram illustrating an example of a schematic configuration of a portable device. FIG. 5 is a diagram illustrating an example of a schematic configuration of the portable control unit. FIG. 6 is a flowchart illustrating an example of the flow of the smart-related process when boarding in the verification ECU. FIG. 7 is a flowchart illustrating an example of the flow of mobile-side smart-related processing in the mobile-side control unit. FIG. 8 is a diagram illustrating an example of a schematic configuration of a portable device. FIG. 9 is a diagram illustrating an example of a schematic configuration of the portable control unit. FIG. 10 is a diagram illustrating an example of a schematic configuration of the vehicle-side unit. FIG. 11 is a diagram illustrating an example of a schematic configuration of the verification ECU. FIG. 12 is a flowchart illustrating an example of a flow of mobile-side smart-related processing in the mobile-side control unit. FIG. 13 is a flowchart illustrating an example of the flow of the smart-related process when boarding in the verification ECU.

A plurality of embodiments and modifications for disclosure will be described with reference to the drawings. For convenience of explanation, between the plurality of embodiments and the modified examples, parts having the same functions as those shown in the drawings used for the explanation so far are denoted by the same reference numerals and description thereof is omitted. There is a case. For the portions denoted by the same reference numerals, the description in other embodiments and / or modifications can be referred to.

(First embodiment)
As shown in FIG. 1, the vehicular authentication system 3 includes a vehicle-side unit 1 used in a vehicle and a portable device 2 as an electronic key carried by the user. The vehicle authentication system 3 has a so-called smart function. The smart function performs code verification by short-range wireless communication between the vehicle-side unit 1 and the portable device 2, and permits the locking and unlocking of the vehicle door and the start of the driving source based on the code verification being established. Refers to the function to do. The travel drive source may be an engine or a travel motor, but the following description will be made with an example in which the travel drive source is an engine.

First, the schematic configuration of the vehicle-side unit 1 will be described with reference to FIG. As shown in FIG. 2, the vehicle-side unit 1 includes a verification ECU 11, an LF transmission unit 12, a UHF reception unit 13, door antennas 14a to 14d, an indoor antenna 15, an antenna outside the trunk 16, a speaker 17, a body ECU 18, and a power unit control ECU 19. It has. The verification ECU 11 corresponds to an in-vehicle device.

The LF transmitting unit 12 transmits a request signal to the portable device 2 using an LF band radio wave via LF antennas such as the door antennas 14a to 14d, the indoor antenna 15, and the antenna 16 outside the trunk. The LF band is a frequency band of 30 kHz to 300 kHz, for example. The range in which signals can be transmitted from the LF antenna using radio waves in the LF band corresponds to the short-range wireless communication area in which short-range wireless communication is possible. The request signal is a signal that requests transmission of the identification code of the portable device 2 for code verification.

The door antenna 14a is provided near the vehicle door of the driver seat, the door antenna 14b is provided near the vehicle door on the passenger seat side, the door antenna 14c is provided near the vehicle door on the right side of the rear seat, and the door antenna 14d. Is provided near the vehicle door on the left side of the rear seat. The indoor antenna 15 is provided in the vehicle interior, and the outside trunk antenna 16 is provided in the vicinity of the trunk room door in the vehicle door.

The short-distance wireless communication area of the door antenna 14a is limited to the vicinity of the vehicle door of the driver seat, the short-range wireless communication area of the door antenna 14b is limited to the vicinity of the vehicle door of the passenger seat side, and the door antenna 14c. The short-range wireless communication area is limited to the vicinity of the vehicle door on the right side of the rear seat, and the short-range wireless communication area of the door antenna 14d is limited to the vicinity of the vehicle door on the left side of the rear seat. Further, the short-range wireless communication area of the indoor antenna 15 is limited to the vehicle interior, and the short-range wireless communication area of the antenna 16 outside the trunk is limited to the vicinity of the trunk room door.

The UHF receiving unit 13 has a UHF antenna, and receives a response signal transmitted from the portable device 2 by radio waves in the UHF band using the UHF antenna. The UHF band is a frequency band of 300 MHz to 3 GHz, for example. The response signal is a signal returned from the portable device 2 in response to the request signal.

Speaker 17 outputs an audible electronic sound. The speaker 17 corresponds to a sound output device. The audible range can also be called an audible frequency band. The frequency band of the electronic sound output from the speaker 17 may be in the range of 20 Hz to 20 kHz, and may be about 100 Hz to 10 kHz as an example. The speaker 17 is arranged so that an electronic sound can be heard outside the vehicle. The speaker 17 may be configured to use a so-called answerback buzzer or the like.

Speaker 17 outputs a preset electronic sound. This electronic sound corresponds to a predetermined sound. The preset electronic sound may be a single frequency beep sound or a multi-frequency chord. Further, the preset electronic sound may include a pattern of intervals (hereinafter simply referred to as a pattern) for outputting a sound. The preset electronic sound may be configured for each vehicle or vehicle type, or may be common regardless of the vehicle. In the following, description will be given by taking as an example a case that is common regardless of the vehicle. The speaker 17 may be configured to be able to output a plurality of types of preset electronic sounds. In the following description, it is assumed that the speaker 17 can output a plurality of types of preset electronic sounds.

The body ECU 18 locks and unlocks each vehicle door by outputting a drive signal for controlling the locking and unlocking of each vehicle door to a door lock motor provided in each vehicle door. The body ECU 18 is connected to a touch sensor provided on the outer door handle of each vehicle door, and detects that the outer door handle of each vehicle door has been touched by the user. In addition, a courtesy switch for each vehicle door is connected to the body ECU 18 to detect opening and closing of each vehicle door.

When the power unit control ECU 19 acquires the engine start permission signal from the verification ECU 11, the power unit control ECU 19 sets the engine start standby state in which the starter motor or the like can be started. The power unit control ECU 19 controls the amount of fuel supplied to the engine, the ignition timing, and the like.

The verification ECU 11 includes a CPU, a volatile memory, a nonvolatile memory, an I / O, and a bus for connecting them, and executes various processes by executing a control program stored in the nonvolatile memory. The verification ECU 11 executes processing related to the smart function. For example, a request signal is transmitted to the LF transmitter 12 or a preset electronic sound is output from the speaker 17. When the UHF receiver 13 receives a response signal to the request signal, the UHF receiver 13 performs collation using the portable device identification code included in the response signal. Note that some or all of the functions executed by the verification ECU 11 may be configured in hardware by one or a plurality of ICs.

As shown in FIG. 3, the verification ECU 11 includes an open / close determination unit 111, a registration unit 112, a transmission processing unit 113, a reception processing unit 114, a sound output processing unit 115, a code verification unit 116, a locking / unlocking permission unit 117, and a start permission. Part 118 is provided.

The opening / closing determination unit 111 determines opening / closing of the vehicle door from the result of the body ECU 18 detecting opening / closing of the vehicle door. The registration unit 112 is, for example, an electrically rewritable non-volatile memory, and the portable device identification code of the authorized user's portable device 2 is a portable device identification code that is a code for identifying the portable device 2. It is registered.

The transmission processing unit 113 transmits a request signal (hereinafter referred to as a WAKE signal) for canceling the sleep state of the portable device 2 in order from the LF antennas such as the door antennas 14a to 14d and the antenna 16 outside the trunk. The reception processing unit 114 receives a response signal (hereinafter referred to as a WAKE response signal) transmitted from the portable device 2 in the UHF band in response to the WAKE signal via the UHF reception unit 13.

In addition, when the WAKE response signal is received by the reception processing unit 114, the transmission processing unit 113 identifies the vehicle from the door antennas 14a to 14d, the indoor antenna 15, and the antenna 16 outside the trunk via the LF transmission unit 12. A request signal (hereinafter referred to as a request signal) including a vehicle identification code which is The vehicle identification code may be the device ID of the verification ECU 11 mounted on the vehicle or the vehicle ID of the vehicle. What is necessary is just to set it as the structure which reads and uses what was stored in the non-volatile memory of collation ECU11 for vehicle identification code. The transmission processing unit 113 may be configured to transmit the request signal from the LF antenna that has received the WAKE response signal by the reception processing unit 114 when the WAKE signal is transmitted. The transmission processing unit 113 starts transmission of a request signal from the indoor antenna 15 when the vehicle door is unlocked and the vehicle door is opened. The reception processing unit 114 receives a response signal (hereinafter referred to as a request response signal) transmitted from the portable device 2 by radio waves in the UHF band in response to the request signal via the UHF receiving unit 13.

The sound output processing unit 115 also outputs a preset electronic sound from the speaker 17 when the transmission processing unit 113 transmits a request signal. As an example, a configuration may be adopted in which a preset electronic sound is output from the speaker 17 at substantially the same timing as when the request signal is transmitted by the transmission processing unit 113. Note that the sound output processing unit 115 may be configured to output a preset electronic sound from the speaker 17 indirectly, for example, via the body ECU 18. In addition, the sound output processing unit 115 selects an electronic sound to be output from a plurality of types of preset electronic sounds, and causes the speaker 17 to output a preset electronic sound. A plurality of types of preset electronic sounds are classified according to the type of vehicle control that is permitted by the smart function.

In the example of this embodiment, an electronic sound (hereinafter referred to as locking / unlocking authentication sound) used during processing for permitting locking / unlocking and an electronic sound (hereinafter referred to as engine starting) used during processing for permitting engine starting are used. It is assumed that the authentication sound is prepared as a different electronic sound. Then, a locking / unlocking authentication sound is output from the speaker 17 during the process for permitting the locking / unlocking, and an engine starting authentication sound is output from the speaker 17 during the process for permitting the engine starting. It is assumed that the verification ECU 11 starts the process for permitting the engine start after the process for permitting the locking / unlocking is completed. The sound output processing unit 115 may be configured to switch between the output of the locking / unlocking authentication sound and the output of the engine start authentication sound, for example, by monitoring the processing in the verification ECU 11.

The code verification unit 116 performs code verification to check whether the portable device 2 that is the transmission source of the request response signal received by the reception processing unit 114 is the authorized user's portable device 2. The code verification is performed between the portable device identification code included in the request response signal received from the portable device 2 and the portable device identification code registered in the registration unit 112. As an example, the code verification unit 116 sends the verification result to the locking / unlocking permission unit 117 during the process for permitting the locking / unlocking, and sends the verification result to the start permission unit 118 during the process for permitting the engine start. It may be configured to send.

The locking / unlocking permission unit 117 sends a signal permitting the locking / unlocking of each vehicle door to the body ECU 18 when the verification result indicating that the code verification is established is obtained from the code verification unit 116. When the locking / unlocking of each vehicle door is permitted, the body ECU 18 starts energization to the touch sensor provided on the outer door handle of each vehicle door, and enters a standby state in which the user can detect the door handle operation. When the body ECU 18 detects that the user has touched the touch sensor, the body ECU 18 outputs a drive signal to the door lock motor to lock and unlock each vehicle door.

The start permission unit 118 sends an engine start permission signal to the power unit control ECU 19 when the collation result indicating that the code collation is established is obtained from the code collation unit 116. The power unit control ECU 19 that has acquired the engine start permission signal puts the engine into an engine start standby state as described above. These locking / unlocking permission unit 117 and start permission unit 118 correspond to a permission unit.

Next, the portable device 2 will be described with reference to FIG. As shown in FIG. 4, the portable device 2 includes a portable side control unit 21, an LF reception unit 22, a UHF transmission unit 23, a microphone 24, a power switch 25, and a communication switch 26. The portable device 2 is in a sleep state in which power consumption is significantly less than that in the wake-up state until the LF reception unit 22 receives a WAKE signal. On the other hand, when the LF reception unit 22 receives a signal, It shall be in a wake-up state.

The LF receiving unit 22 receives a request signal transmitted from the vehicle-side unit 1 by LF band radio waves via the LF antenna. The LF receiver 22 corresponds to a receiver. The UHF transmission unit 23 transmits the signal output from the portable side control unit 21 on the UHF band radio wave from the UHF antenna. The UHF transmission unit 23 corresponds to a reply unit.

The microphone 24 collects sound, converts the collected sound into an electric signal, and inputs the electric signal to the portable control unit 21. The microphone 24 corresponds to a sound collection unit. The microphone 24 collects the electronic sound when the portable device 2 is located in a range where the electronic sound output from the speaker 17 of the vehicle-side unit 1 can be collected.

The power switch 25 is a switch for turning on / off the power of the portable device 2 in accordance with a user operation input. The communication switch 26 is a switch that turns on and off the communication function of the portable device 2 in accordance with a user operation input.

The mobile-side control unit 21 includes a CPU, a volatile memory, a nonvolatile memory, an I / O, and a bus for connecting them, and executes various processes by executing a control program stored in the nonvolatile memory. The portable side control unit 21 executes processing related to the smart function. For example, verification using a vehicle identification code included in the request signal received by the LF reception unit 22 is performed, or verification using sound collected by the microphone 24 is performed. Further, a request response signal including a portable device identification code is transmitted from the UHF transmission unit 23 in accordance with the result of these verifications. Note that some or all of the functions executed by the portable control unit 21 may be configured in hardware by one or a plurality of ICs.

As shown in FIG. 5, the portable side control unit 21 includes a registration unit 211, a reception processing unit 212, a code verification unit 213, a sound verification unit 214, and a transmission processing unit 215. The registration unit 211 is, for example, an electrically rewritable nonvolatile memory, in which a vehicle identification code for a legitimate user's vehicle is registered. In addition, in the registration unit 211, an electronic sound about a regular vehicle is registered. In this embodiment, it is assumed that the locking / unlocking authentication sound and the engine start authentication sound are registered in the registration unit 211. The reception processing unit 212 acquires the request signal received by the LF receiving unit 22.

The code verification unit 213 performs verification (hereinafter referred to as code verification) between the vehicle identification code included in the request signal acquired by the reception processing unit 212 and the vehicle identification code registered in the registration unit 211. The sound collation unit 214 acquires the sound collected by the microphone 24 and collates the acquired sound with a regular electronic sound registered in the registration unit 211. This sound matching unit 214 corresponds to a mobile phone side sound matching unit. As an example, the configuration may be such that the locking / unlocking authentication sound and the engine start authentication sound registered in the registration unit 211 are collated. The sound collation may be performed, for example, depending on whether or not the waveforms of the electrical signals converted from the sound match. In addition, it may be configured such that the frequency of the sound matches, whether the sound pattern matches, whether the feature points of the waveform of the electric signal converted from the sound match, or the like. It should be noted that processing such as removing noise from the sound collected by the microphone 24 may be performed before collation.

The transmission processing unit 215 causes the UHF transmission unit 23 to transmit a response signal including the portable device identification code when the code verification unit 213 establishes code verification and the sound verification unit 214 establishes sound verification. For example, in the sound collation unit 214, if the collation is established with any of the lock / unlock authentication sound and the engine start authentication sound registered in the registration unit 211, the sound collation may be established. On the other hand, if neither the code verification nor the sound verification is established, the UHF transmission unit 23 does not transmit a response signal including the portable device identification code. As a result, even when the portable device 2 receives the request signal, if the collation is not established by the sound collation unit 214, the portable device 2 does not transmit the request response signal including the portable device identification code.

Subsequently, processing related to the smart function executed by the verification ECU 11 when boarding (hereinafter referred to as smart processing during boarding) will be described with reference to the flowchart of FIG. The flowchart in FIG. 6 may be configured to be started when the reception processing unit 114 receives a WAKE response signal for a WAKE request signal, for example.

First, in S1, the transmission processing unit 113 transmits a WAKE signal via the LF transmission unit 12, and the reception processing unit 114 can receive the WAKE response signal from the LF antenna. Send a request signal to the area. In addition, the sound output processing unit 115 causes the speaker 17 to output a preset locking / unlocking authentication sound at substantially the same timing as the transmission processing unit 113 transmits the request signal.

In S2, when the request response signal returned from the portable device 2 is received by the reception processing unit 114 in response to the request signal transmitted in S1 (YES in S2), the process proceeds to S3. On the other hand, if the request response signal cannot be received by the reception processing unit 114 (NO in S2), the boarding smart-related processing is terminated.

In S3, the code verification unit 116 performs code verification between the portable device identification code included in the request response signal received in S2 and the portable device identification code registered in the registration unit 112. If the code verification is established (YES in S3), the process proceeds to S4. On the other hand, if the code verification is not established (NO in S3), the boarding smart-related process is terminated.

In S4, the unlocking / permitting permission unit 117 sends a signal permitting the unlocking of each vehicle door to the body ECU 18, and permits the unlocking of the vehicle door. When the body ECU 18 detects that the user has touched the touch sensor provided on the outer door handle in a state where the unlocking of the vehicle door is permitted, the body ECU 18 drives the door lock motor to unlock each vehicle door. I do.

In S5, the opening / closing determination unit 111 determines opening / closing of the vehicle door. And when it determines with opening and closing of the vehicle door having been performed within a fixed time from unlocking (it is YES at S5), it moves to S6. On the other hand, if it is determined that the vehicle door has not been opened or closed within a certain time from unlocking (NO in S5), the boarding smart-related processing is terminated.

In S6, the transmission processing unit 113 transmits a request signal from the indoor antenna 15 to the short-range wireless communication area in the vehicle cabin via the LF transmission unit 12. In addition, the sound output processing unit 115 outputs a preset engine start authentication sound from the speaker 17 at substantially the same timing as the transmission processing unit 113 transmits the request signal.

In S7, when the request response signal returned from the portable device 2 is received by the reception processing unit 114 in response to the request signal transmitted in S6 (YES in S7), the process proceeds to S8. On the other hand, if the request response signal cannot be received by the reception processing unit 114 (NO in S7), the boarding smart related processing is terminated.

In S8, the code verification unit 116 performs code verification between the portable device identification code included in the request response signal received in S7 and the portable device identification code registered in the registration unit 112. If code verification is established (YES in S8), the process proceeds to S9. On the other hand, if the code verification is not established (NO in S8), the boarding smart-related process is terminated.

In S9, the start permission unit 118 sends an engine start permission signal to the power unit control ECU 19, permits the engine start, and terminates the smart related processing when boarding. In a state where the engine start is permitted, the power unit control ECU 19 starts the engine on condition that, for example, an engine switch or the like is turned on.

As shown in the flowchart of FIG. 6, the unlocking / authentication sound is used during the processing of S1 for permitting the locking / unlocking, whereas the engine starting authentication sound is performed during the processing of S6 for permitting the engine starting. Is used. As shown in the flowchart of FIG. 6, when the locking / unlocking permission is not performed, the locking / unlocking authentication sound is output from the speaker 17, but the engine start authentication sound is not output.

Subsequently, processing related to the smart function in the mobile-side control unit 21 (hereinafter, mobile-side smart-related processing) will be described using the flowchart of FIG. The flowchart in FIG. 7 may be configured to be started when, for example, the WAKE request signal is received by the LF receiving unit 22 and the portable device 2 enters the wake-up state and the WAKE response signal is transmitted from the UHF transmitting unit 23. Moreover, the portable side control part 21 shall start the count of a timer circuit, when a portable side smart related process is started.

First, in S21, when the request signal transmitted from the vehicle side unit 1 is received by the LF receiver 22 (YES in S21), the process proceeds to S23. On the other hand, if not received (NO in S21), the process proceeds to S22. In S22, if the count of the timer circuit exceeds the specified value and timed out (YES in S22), the mobile-side smart-related process is terminated. On the other hand, if the timeout has not occurred (NO in S22), the process returns to S21 and is repeated. In S23, the sound matching unit 214 acquires the sound collected by the microphone 24 when the request signal is received in S21.

In S24, the code verification unit 213 performs code verification between the vehicle identification code included in the request signal received in S21 and the vehicle identification code registered in the registration unit 211. If the code verification is established (YES in S24), the process proceeds to S25. On the other hand, if the code verification is not established (NO in S24), the process proceeds to S22.

In S25, the sound collation unit 214 performs sound collation between the sound acquired in S23 and the locking / unlocking authentication sound and engine start authentication sound registered in the registration unit 211. And when collation is realized in any one of the locking / unlocking authentication sound and the engine start authentication sound, that is, when sound collation is established (YES in S25), the process proceeds to S26. On the other hand, if neither of the locking / unlocking authentication sound and the engine start authentication sound is established, that is, if the sound matching is not established (NO in S25), the process proceeds to S22.

In S26, the transmission processing unit 215 causes the UHF transmission unit 23 to transmit a request response signal including the portable device identification code. Further, the portable control unit 21 resets the count of the timer circuit and starts the count again (that is, timer restart). In S27, if the count of the timer circuit exceeds the specified value and timed out (YES in S27), the mobile-side smart related processing is terminated. On the other hand, if the timeout has not occurred (NO in S27), the process proceeds to S28.

In S28, when the power switch 25 or the communication switch 26 is turned off (YES in S28), the mobile-side smart related processing is terminated. On the other hand, when both the power switch 25 and the communication switch 26 are on (NO in S28), the process proceeds to S29.

In the vehicular authentication system 3 of the present embodiment, the electronic sound output from the vehicle-side unit 1 is not permitted to be locked or unlocked and the engine to be started unless sound collation is established in the portable device 2. Therefore, when a malicious third party attempts unauthorized authentication using wireless communication such as a relay attack, the sound of the same audible range as the normal electronic sound is collected within the range that can be collected by the microphone 24 of the portable device 2. It is necessary to make a pseudo output. In the vehicle authentication system 3 of the present embodiment, a process for permitting the locking / unlocking is performed prior to the process for permitting the engine start, and therefore an engine start authentication sound is output from the vehicle side unit 1. Prior to the activation, a lock / unlock authentication sound is output. Therefore, it is necessary for a malicious third party to output a lock / unlock authentication sound in a pseudo manner prior to the engine start authentication sound. On the other hand, when the user of the portable device 2 hears the locking / unlocking authentication sound even though he / she is not close to the own vehicle, the user can start the engine by turning off the power switch 25 or the communication switch 26. It is possible to end the mobile-side smart-related process before the process proceeds to permission, and not allow the engine to be started.

In S29, when the request signal transmitted from the vehicle side unit 1 is received by the LF receiver 22 (YES in S29), the process proceeds to S30. On the other hand, if it has not been received (NO in S29), the process returns to S27 and is repeated. In S30, the sound collating unit 214 acquires the sound collected by the microphone 24 when the request signal is received in S29.

In S31, the code verification unit 213 performs code verification between the vehicle identification code included in the request signal received in S29 and the vehicle identification code registered in the registration unit 211. If the code verification is established (YES in S31), the process proceeds to S32. On the other hand, when the code verification is not established (NO in S31), the process returns to S27 and is repeated.

In S32, the sound collation unit 214 performs sound collation between the sound acquired in S30 and the locking / unlocking authentication sound and engine start authentication sound registered in the registration unit 211. If the sound collation is established (YES in S32), the process proceeds to S33. On the other hand, when collation is not materialized (it is NO at S32), it returns to S27 and repeats processing. In S33, the transmission processing unit 215 transmits a response signal including the portable device identification code from the UHF transmission unit 23, and the portable side control unit 21 restarts the timer, and returns to S27 to repeat the processing.

According to the configuration of the first embodiment, locking / unlocking and engine starting are not permitted unless sound verification is established in the portable device 2 for electronic sounds such as the locking / unlocking authentication sound and engine start authentication sound output from the vehicle-side unit 1. . On the other hand, when a malicious third party attempts unauthorized authentication using a wireless communication such as a relay attack, the same audible range as the normal electronic sound within a range that can be collected by the microphone 24 of the portable device 2 It is necessary to simulate the sound of. However, when such a sound in the audible range is pseudo-output within a range where sound can be collected by the microphone 24, the user of the portable device 2 can notice this sound. Therefore, the user of the portable device 2 can perform unauthorized authentication using wireless communication on his / her vehicle based on the fact that the user can hear the locking / unlocking authentication sound or the engine start authentication sound even though the user is not close to the own vehicle. It is possible to recognize what has been done to the user. Therefore, regardless of the distance between the portable device 2 and the vehicle using the vehicle-side unit 1, the user can recognize that unauthorized authentication using wireless communication has been performed on the own vehicle.

In addition, according to the configuration of the first embodiment, the unlocking / authentication sound used during the process for permitting the unlocking and the engine start authentication sound used during the process for permitting the engine start are different from each other. It is an electronic sound. Thus, depending on the type of electronic sound, the user also recognizes whether unauthorized authentication using wireless communication is in the process of permitting unlocking or in the stage of permitting engine start. It becomes possible to do. Thus, the process does not proceed until the engine start is permitted by rushing to the vehicle at the stage of the process for permitting the unlocking or turning off the power switch 25 or the communication switch 26 of the portable device 2. It becomes possible to.

(Second Embodiment)
In 1st Embodiment, although the structure which performs sound collation by the portable device side about the electronic sound output from the vehicle side was shown, it does not necessarily restrict to this. For example, the electronic sound output from the portable device side may be configured to perform sound collation on the vehicle side. Hereinafter, an example of the configuration of the second embodiment will be described. The vehicle authentication system 3 of the second embodiment is the same as that of the first embodiment except that the vehicle-side unit 1a is included instead of the vehicle-side unit 1 and the point that the mobile device 2a is included instead of the portable device 2. This is the same as the vehicle authentication system 3.

First, the portable device 2a will be described with reference to FIG. As shown in FIG. 8, the portable device 2a includes a portable side control unit 21a, an LF reception unit 22, a UHF transmission unit 23, a power switch 25, a communication switch 26, and a speaker 27. The portable device 2a is the same as the portable device 2 of the first embodiment except that it does not include the microphone 24, includes the speaker 27, and includes the portable side control unit 21a instead of the portable side control unit 21. is there.

The speaker 27 outputs an audible electronic sound in the same manner as the speaker 17 of the first embodiment. The speaker 27 corresponds to a sound output unit. As the speaker 27, for example, a small piezoelectric speaker may be used. In the present embodiment as well, the speaker 27 is described as being capable of outputting a plurality of types of preset electronic sounds in the same manner as the speaker 17. The portable control unit 21a will be described below.

As shown in FIG. 9, the portable control unit 21a includes a registration unit 211a, a reception processing unit 212, a code verification unit 213, a transmission processing unit 215a, and a sound output processing unit 216. The portable side control unit 21a is provided with a sound collating unit 214, a sound output processing unit 216, and a registration unit 211a and a transmission processing unit 215a instead of the registration unit 211 and the transmission processing unit 215. Is the same as the portable side control unit 21 of the first embodiment.

The registration unit 211a is, for example, an electrically rewritable nonvolatile memory, in which a vehicle identification code for a legitimate user's vehicle is registered. The transmission processing unit 215a causes the UHF transmission unit 23 to transmit a response signal including the portable device identification code when the code verification unit 213 establishes code verification.

The sound output processing unit 216 also outputs a preset electronic sound from the speaker 27 when the transmission processing unit 215a transmits a request response signal. As an example, a preset electronic sound is output from the speaker 27 at substantially the same timing as when the request response signal is transmitted by the transmission processing unit 215a. In addition, the sound output processing unit 216 selects an electronic sound to be output from among a plurality of types of preset electronic sounds, and causes the speaker 27 to output a preset electronic sound. A plurality of types of preset electronic sounds are classified according to the type of vehicle control permitted by the smart function. In the example of this embodiment, the unlocking / unlocking authentication sound and the engine start authentication described in the first embodiment are used. It is assumed that electronic sounds are prepared as different sounds.

The sound output processing unit 216 outputs a locking / unlocking authentication sound from the speaker 17 during processing for permitting locking / unlocking, and outputs an engine starting authentication sound from the speaker 17 during processing for permitting engine starting. . As an example, the sound output processing unit 216 determines whether the request response signal after entering the wake-up state is the processing time for permitting locking / unlocking or the processing time for permitting engine start. It may be determined from the number of transmissions. As a specific example, if the number of transmissions of the request response signal after entering the wake-up state is 0, it is determined that the process for permitting locking / unlocking is performed, and if it is one or more times, the engine start is permitted. What is necessary is just to judge at the time of processing for performing. In addition, by giving information indicating whether it is a processing time for permitting locking / unlocking or a processing time for permitting engine start to the request signal transmitted from the vehicle side unit 1a, The sound output processing unit 216 may make the above-described determination based on this information.

Subsequently, a schematic configuration of the vehicle-side unit 1a will be described with reference to FIG. As shown in FIG. 10, the vehicle-side unit 1a includes a verification ECU 11a, an LF transmitter 12, a UHF receiver 13, door antennas 14a to 14d, an indoor antenna 15, an antenna outside a trunk 16, a body ECU 18, a power unit control ECU 19, and a microphone 20. It has. The vehicle side unit 1a is the same as the vehicle side unit 1 of the first embodiment except that the speaker 17 is not provided, the microphone 20 is provided, and the verification ECU 11a is provided instead of the verification ECU 11. The verification ECU 11a corresponds to an in-vehicle device.

The microphone 20 collects sound, converts the collected sound into an electric signal, and inputs it to the verification ECU 11a. The microphone 20 corresponds to a sound collecting device. When the microphone 20 is located in a range where the electronic sound output from the speaker 27 of the portable device 2a can be collected, the microphone 20 collects the electronic sound. The verification ECU 11a will be described below.

As shown in FIG. 11, the verification ECU 11a includes an open / close determination unit 111, a registration unit 112a, a transmission processing unit 113, a reception processing unit 114, a code verification unit 116, a locking / unlocking permission unit 117a, a start permission unit 118a, and a sound acquisition unit 119. And a sound collation unit 120.

The registration unit 112a is, for example, an electrically rewritable non-volatile memory, in which the portable device identification code of the portable device 2a of the authorized user is registered. In addition, in the registration unit 112, as in the registration unit 211 of the first embodiment, an electronic sound for a regular vehicle is registered. In the present embodiment, it is assumed that the locking / unlocking authentication sound and the engine start authentication sound are registered in the registration unit 112a.

The sound acquisition unit 119 acquires the sound collected by the microphone 20 and inputs it to the sound verification unit 120. The sound collation unit 120 performs sound collation between the sound acquired by the sound acquisition unit 119 and the regular electronic sound registered in the registration unit 112a in the same manner as the sound verification unit 214 of the first embodiment. This sound collation unit 120 corresponds to a vehicle side sound collation unit. As an example, at the time of processing for permitting locking / unlocking, it is compared with the locking / unlocking authentication sound registered in the registration unit 211, and registered at the registration unit 211 at the time of processing for permitting engine start. What is necessary is just to make it the structure which collates with an engine starting authentication sound. The sound collation unit 120 sends the collation result to the lock / unlock permission unit 117a during the process for permitting the locking / unlocking, and sends the collation result to the start permission unit 118a during the process for permitting the engine start. What is necessary is just composition.

The locking / unlocking permission unit 117a obtains a collation result indicating that the code collation is established from the code collation unit 116, and also obtains a collation result indicating that the sound collation is established from the sound collation unit 120. A signal for permitting the door to be unlocked is sent to the body ECU 18. The start permission unit 118a obtains a collation result indicating that the code collation is established from the code collation unit 116, and obtains a collation result indicating that the sound collation is established from the sound collation unit 120. A signal is sent to the power unit control ECU 19. The power unit control ECU 19 that has acquired the engine start permission signal puts the engine into an engine start standby state as described above. These locking / unlocking permission part 117a and start permission part 118a correspond to a permission part.

Subsequently, processing related to the smart function in the mobile-side control unit 21a (hereinafter, mobile-side smart-related processing) will be described with reference to the flowchart of FIG. The flowchart of FIG. 12 may be configured to be started when, for example, the WAKE request signal is received by the LF receiving unit 22 and the portable device 2 enters the wake-up state and transmits the WAKE response signal from the UHF transmitting unit 23. Moreover, the portable side control part 21a shall start the count of a timer circuit, when a portable side smart related process is started.

First, in S41, when the request signal transmitted from the vehicle side unit 1a is received by the LF receiver 22 (YES in S41), the process proceeds to S43. On the other hand, when it has not received (it is NO at S41), it moves to S42. In S42, if the count of the timer circuit exceeds the specified value and timed out (YES in S42), the mobile-side smart related processing is terminated. On the other hand, when the time-out has not occurred (NO in S42), the process returns to S41 and is repeated.

In S43, the code verification unit 213 performs code verification between the vehicle identification code included in the request signal received in S41 and the vehicle identification code registered in the registration unit 211a. If the code verification is established (YES in S43), the process proceeds to S44. On the other hand, if the code verification is not established (NO in S43), the process proceeds to S42.

In S44, the transmission processing unit 215a causes the UHF transmission unit 23 to transmit a request response signal including the portable device identification code. In addition, the sound output processing unit 216 outputs a preset locking / unlocking authentication sound from the speaker 27 at substantially the same timing as the transmission processing unit 215a transmits the request response signal. Further, the portable control unit 21a resets the count of the timer circuit, and starts counting again (that is, timer restart). In S45, if the count of the timer circuit exceeds the specified value and timed out (YES in S45), the mobile-side smart related processing is terminated. On the other hand, if it is not timed out (NO in S45), the process proceeds to S46.

In S46, when the power switch 25 or the communication switch 26 is turned off (YES in S46), the mobile-side smart related process is terminated. On the other hand, when both the power switch 25 and the communication switch 26 are on (NO in S46), the process proceeds to S47.

In the vehicle authentication system 3 of the present embodiment, a process for permitting locking / unlocking is performed prior to a process for permitting engine start. In accordance with this, the locking / unlocking authentication sound is output prior to the output of the engine start authentication sound from the portable device 2a. Therefore, when the user of the portable device 2 hears the locking / unlocking authentication sound even though he / she is not in the vicinity of his / her own vehicle, the power switch 25 or the communication switch 26 is turned off to process the engine start permission. The mobile-side smart-related processing is terminated before the process proceeds, so that the engine is not allowed to start.

In S47, when the request signal transmitted from the vehicle-side unit 1a is received by the LF receiver 22 (YES in S47), the process proceeds to S48. On the other hand, if not received (NO in S47), the process returns to S45 and the process is repeated. In S48, the code verification unit 213 performs code verification between the vehicle identification code included in the request signal received in S47 and the vehicle identification code registered in the registration unit 211a. If code verification is established (YES in S48), the process proceeds to S49. On the other hand, if the code verification is not established (NO in S48), the process returns to S45 and is repeated.

In S49, the transmission processing unit 215a causes the UHF transmission unit 23 to transmit a request response signal including the portable device identification code. In addition, the sound output processing unit 216 outputs a preset engine start authentication sound from the speaker 27 at substantially the same timing as the transmission processing unit 215a transmits the request response signal. Further, the portable control unit 21a restarts the timer, and returns to S45 to repeat the process.

Subsequently, a process related to the smart function executed by the verification ECU 11a when boarding (hereinafter referred to as a “smart-related process during boarding”) will be described with reference to the flowchart of FIG. The flowchart in FIG. 13 may be configured to be started when the reception processing unit 114 receives a WAKE response signal for a WAKE request signal, for example.

First, in S61, when the transmission processing unit 113 transmits a WAKE signal via the LF transmission unit 12, the reception processing unit 114 can receive the WAKE response signal from the LF antenna outside the vehicle compartment. Send a request signal to the area.

In S62, when the request response signal returned from the portable device 2a is received by the reception processing unit 114 in response to the request signal transmitted in S61 (YES in S62), the process proceeds to S63. On the other hand, when the request response signal cannot be received by the reception processing unit 114 (NO in S62), the boarding smart-related processing is terminated. In S63, the sound acquisition unit 119 acquires the sound collected by the microphone 20 when the request signal is received in S62.

In S64, the code verification unit 116 performs code verification between the portable device identification code included in the request response signal received in S62 and the portable device identification code registered in the registration unit 112a. If code verification is established (YES in S64), the process proceeds to S65. On the other hand, if the code verification is not established (NO in S64), the boarding smart-related processing is terminated.

In S65, the sound collation unit 120 performs sound collation between the sound acquired in S63 and the locking / unlocking authentication sound registered in the registration unit 112a. And when sound collation with a locking / unlocking authentication sound is materialized (it is YES at S65), it moves to S66. On the other hand, if the sound verification with the locking / unlocking authentication sound is not established (NO in S65), the boarding smart-related processing is terminated. In S66, the locking / unlocking permission unit 117a sends a signal permitting the unlocking of each vehicle door to the body ECU 18 and permits the unlocking of the vehicle door.

In S67, the opening / closing determination unit 111 determines opening / closing of the vehicle door. If it is determined that the vehicle door has been opened and closed within a predetermined time from unlocking (YES in S67), the process proceeds to S68. On the other hand, if it is determined that the vehicle door has not been opened or closed within a certain time from unlocking (NO in S67), the boarding smart-related processing is terminated.

In S68, the transmission processing unit 113 causes the indoor antenna 15 to transmit a request signal to the short-range wireless communication area in the vehicle cabin via the LF transmission unit 12. In S69, when the request response signal returned from the portable device 2a is received by the reception processing unit 114 in response to the request signal transmitted in S68 (YES in S69), the process proceeds to S70. On the other hand, when the request response signal cannot be received by the reception processing unit 114 (NO in S69), the boarding smart-related processing is terminated.

The processing from S70 to S71 is the same as the processing from S63 to S64. In S72, the sound collation unit 120 performs sound collation between the sound acquired in S70 and the engine start authentication sound registered in the registration unit 112a. If the sound verification with the engine start authentication sound is established (YES in S72), the process proceeds to S73. On the other hand, when the sound verification with the engine start authentication sound is not established (NO in S72), the boarding smart-related process is terminated. In S73, the start permission unit 118a sends an engine start permission signal to the power unit control ECU 19, permits the engine start, and ends the on-boarding smart related processing.

According to the configuration of the second embodiment, when a malicious third party attempts unauthorized authentication using wireless communication such as a relay attack, an audible electronic sound is output from the speaker 27 of the portable device 2a. . Therefore, the user of the portable device 2a has performed unauthorized authentication using his / her wireless communication based on the fact that the user can hear this electronic sound even though he / she is not close to his / her vehicle. Can be recognized. Therefore, regardless of the distance between the portable device 2a and the vehicle using the vehicle-side unit 1a, the user can recognize that unauthorized authentication using wireless communication has been performed on the own vehicle.

Also in the second embodiment, as in the first embodiment, the unlocking authentication sound used at the time of processing for permitting unlocking, and the engine start authentication sound used at the time of processing for permitting engine start, Are different electronic sounds. Therefore, as in the configuration of the first embodiment, the user can determine whether the unauthorized authentication using wireless communication is in the process of performing the unlocking permission, depending on the type of electronic sound, It becomes possible to recognize whether it is in the stage for performing.

(First modification)
In the second embodiment described above, the configuration in which sound matching is performed in the vehicle-side unit 1a has been shown, but this is not necessarily the case. For example, it is good also as a structure which does not perform sound collation in the vehicle side unit 1a. In this case, if the verification ECU 11a is not provided with the sound verification unit 120 and the code verification unit 116 allows the code verification to be established, the locking / unlocking or the engine start is permitted. Good. Moreover, what is necessary is just to abbreviate | omit registration with the locking / unlocking authentication sound and engine starting authentication sound to the registration part 112a.

(Second modification)
In the first embodiment and the second embodiment described above, the unlocking / unlocking authentication sound used during the process for permitting the unlocking and the engine starting authentication sound used during the process for permitting the engine start are respectively provided. Although a different electronic sound is shown, the present invention is not limited to this. For example, the configuration may be such that the locking / unlocking authentication sound and the engine start authentication sound are the same electronic sound.

(Third Modification)
In the first embodiment and the second embodiment described above, the portable devices 2 and 2a are configured to include the power switch 25 and the communication switch 26. However, the configuration is not necessarily limited thereto. For example, the portable devices 2 and 2a may be configured to include only one of the power switch 25 and the communication switch 26, or may be configured to include neither. When the portable device 2 adopts a configuration in which neither the power switch 25 nor the communication switch 26 is provided, a configuration in which the process of S28 is omitted in the flowchart of FIG. Further, when the portable device 2a adopts a configuration in which neither the power switch 25 nor the communication switch 26 is provided, a configuration in which the process of S46 is omitted in the flowchart of FIG.

(Fourth modification)
In the first embodiment and the second embodiment described above, locking / unlocking and engine starting are shown as the types of vehicle control that is permitted by the smart function, but this is not necessarily limited thereto. For example, it is good also as a structure which makes object control of vehicles other than locking / unlocking and engine starting.

(5th modification)
In the first embodiment and the second embodiment described above, an example in which the portable devices 2 and 2a are electronic keys has been shown, but the present invention is not necessarily limited thereto. For example, the portable devices 2 and 2a may be configured as a portable terminal such as a multi-function mobile phone that also functions as an electronic key.

Note that the present disclosure is not limited to the above-described embodiments and modifications, and various modifications are possible. Implementations obtained by appropriately combining technical means disclosed in different embodiments and modifications, respectively. The form is also included in the technical scope of the present disclosure.

Claims (8)

1. An in-vehicle device (11) including a transmission processing unit (113) that is used in a vehicle and transmits a request signal for requesting code verification by wireless communication;
   A portable device (2) including a reply unit (23) that is carried by a user and transmits a response signal including an identification code for identifying the device itself with respect to the request signal;
   The in-vehicle device is
   A vehicle authentication system further comprising a permission unit (117, 118) that permits control of the vehicle based on the fact that code verification using the identification code included in the response signal transmitted from the reply unit is established. Because
   The in-vehicle device is
   A sound output processing unit (115) for outputting the predetermined sound from a sound output device (17) for outputting a predetermined sound in an audible range when the transmission signal is transmitted by the transmission processing unit;
   The portable device is
   A sound collection unit (24) for collecting sounds;
   A portable side sound matching unit (214) for matching the sound collected by the sound collecting unit with the regular predetermined sound;
   Even if it is a case where the said reply part receives the said request signal, when the collation is not materialized by the said portable side sound collation part, the authentication system for vehicles which does not transmit the said response signal containing the said identification code.
2. An in-vehicle device (11a) including a transmission processing unit (113) that is used in a vehicle and transmits a request signal for requesting code verification by wireless communication;
   A portable device (2a) including a reply unit (23) that is carried by the user and transmits a response signal including an identification code for identifying the device itself with respect to the request signal;
   The in-vehicle device is
   A vehicular authentication system further comprising a permitting unit (117a, 118a) that permits control of the vehicle based on the establishment of code verification using the identification code included in the response signal transmitted from the reply unit. Because
   The portable device is
   The vehicle authentication system further comprising a sound output unit (27) that outputs a predetermined sound in an audible range when the response signal is transmitted by the reply unit.
3. In claim 2,
   The in-vehicle device is
   A sound acquisition unit (19) for acquiring sounds collected by a sound collection device (20) for collecting sounds around the vehicle;
   A vehicle side sound collation unit (120) for collating the sound acquired by the sound acquisition unit with the regular predetermined sound;
   In the case where the verification is not established in the vehicle-side sound verification unit, even if the verification unit uses the identification code included in the response signal transmitted from the reply unit, Is a vehicle authentication system that does not allow control of the vehicle.
4. In claim 1,
   There are a plurality of types of control of the vehicle permitted by the permission unit,
   The transmission of the request signal and the code verification are performed according to the type of control of the vehicle permitted by the permission unit,
   The said sound output process part is an authentication system for vehicles which outputs the said predetermined sound different according to the kind of control of the said vehicle permitted in the said permission part, when outputting the said predetermined sound.
5. In claim 2 or 3,
   There are a plurality of types of control of the vehicle permitted by the permission unit,
   The transmission of the request signal and the code verification are performed according to the type of control of the vehicle permitted by the permission unit,
   The said sound output part is an authentication system for vehicles which outputs the said predetermined sound according to the kind of control of the said vehicle permitted in the said permission part, when outputting the said predetermined sound.
6. In any one of claims 1 to 5,
   The portable device is
   A vehicle authentication system comprising at least one of a power switch (25) for turning on / off the power of its own device according to a user's operation input and a communication switch (26) for turning on / off its own communication function according to a user's operation input.
7. Used in a vehicle authentication system that permits control of the vehicle based on the establishment of code verification using wireless communication between an in-vehicle device used in the vehicle and a portable device carried by the user,
   A receiver (22) for receiving the request signal transmitted from the in-vehicle device that outputs a predetermined sound in the audible range when transmitting a request signal for requesting code verification;
   A reply unit (23) for transmitting a response signal to the request signal;
   A sound collection unit (24) for collecting sounds;
   A portable sound matching unit (214) for collating the sound collected by the sound collecting unit with the regular predetermined sound;
   The reply unit includes an identification code for identifying the own device used for the code verification if the verification is not established in the portable sound verification unit even when the request signal is received. A portable device that does not transmit the response signal.
8. Used in a vehicle authentication system that permits control of the vehicle based on the establishment of code verification using wireless communication between an in-vehicle device used in the vehicle and a portable device carried by the user,
   A receiving unit (22) for receiving the request signal transmitted from the in-vehicle device for transmitting a request signal for requesting code verification;
   A reply unit (23) for transmitting a response signal to the request signal;
   A portable device comprising a sound output unit (27) for outputting a predetermined sound in an audible range when the response signal is transmitted by the reply unit.

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