JPH0571258A - Locking device by use of coded data - Google Patents

Abstract

PURPOSE:To provide a lock for preventing a car from starting even if a lock is physically broken or an electric wiring of a circuit is changed. CONSTITUTION:After a user unlocks physically by a key to enable to drive a car, one inputs a code setting command and a code. When the code input by the user is judged coincides all with the code loaded from the key code- memory 15 of a key 17 and also the code stored in the lock code memory 3 of a lock 14, in the code comparison part 7, the coded control data are checked in a data comparison part 13 to control respective parts to drive it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle locking device,
In particular, the present invention relates to a lock device that uses encrypted control information as a key.

[0002]

2. Description of the Related Art Conventionally, a vehicle locking device has a function of electrically connecting / disconnecting the lock, so that when the key is opened, the electric system of the vehicle is connected to the engine. It was possible to operate the vehicle including starting the system.

On the other hand, in recent vehicles, a control system including a combination of a memory means and a microprocessor is adopted for an ignition system, a fuel supply system, a steering system and the like.

[0004]

However, in the device having the above structure, the lock has only the function of connecting / disconnecting the electric circuit. Therefore, if the connection of the electric circuit is secured without going through the lock. However, even a person without a key can easily operate the vehicle, which makes the theft easier.

The present invention eliminates the above-mentioned problem that if a person without a key can operate the vehicle easily by securing the connection of the electric circuit without going through the lock, the theft is facilitated. Therefore, a part or all of the memory contents required by the control system are encrypted and stored in the key, and the encrypted contents are decrypted and read out from the control system only by the user's personal identification number. It is intended to provide a device for preventing theft.

[0006]

According to the present invention, there is provided an input requesting unit for requesting a user to input a password, a password storing unit for storing a password input by a user, and a unit for writing a password in the password storing unit. And a key information writing unit that writes the personal identification and encrypted data input by the user to the key, a key information reading unit that reads the personal identification and encrypted data stored in the key, and the personal identification and lock personal identification entered by the user. A password comparison unit that matches the password stored in the storage unit with the password stored in the key, an encrypted data generation unit that encrypts vehicle control data, and a data decryption unit that decrypts the encrypted data, A first storage means for storing encrypted data, a second storage means for storing unencrypted data, a temporary storage means for temporarily storing decrypted data, and a vehicle based on the stored control data. It consists of a lock consisting of a control processor that controls the hardware of each part, a key code storage part that stores the secret code entered by the user, and an encrypted data storage part that stores encrypted data corresponding to this secret code. Have a key

[0007]

According to the present invention, the vehicle cannot be operated by physically breaking the lock and changing the connection of the electric circuit, and can be operated only by a series of input operations such as a password command and password input. ..

[0008]

FIG. 1 is a block diagram showing an embodiment of a locking device using encrypted data according to the present invention. In the figure, 1 is a password input, 2 is an input request unit that requests the user to input a command or password, and accepts the input from the user, and 3 stores the password specified by the user. The lock secret code storage unit 4 does not change the contents unless the contents are changed or erased. Reference numeral 4 is a secret code writing unit that writes a secret code on a lock and a key. 6 is a key information reading section for reading the password stored in the key or the encrypted control data, and 7 is the password input by the user, the password stored in the lock, and the password stored in the key, and all of them match. The password comparison unit 8 for determining whether or not to implement is implemented with an encryption algorithm using a key, and this encryption algorithm causes a part of the control data stored in the first storage unit 9. Then, the encrypted data is generated by using the secret code as a key, and the encrypted data is output to the key information writing unit 5. The read-only first memory 9 stores the data to be encrypted of the vehicle control data. Means, 10 is a read-only second storage means for storing non-encrypted data of vehicle control data, 11 is a readable and writable temporary storage means for storing decrypted control data, and 12 is a second storage. Means 10 and temporary storage means 11
The control processor that controls the hardware of each part of the vehicle on the basis of the control data stored in, 13 is equipped with an algorithm for decrypting the encrypted control data stored in the key. A data decryption unit that operates only when the results match and outputs the decrypted data, 14 is the input request unit 2, the key secret storage unit 3,
PIN writing unit 4, key information writing unit 5, key information reading unit 6, PIN comparison unit 7, encrypted data generation unit 8, first storage unit 9, second storage unit 10, temporary storage unit 11, control processor 12, and A lock which is composed of the data decryption unit 13 and is incorporated in the lock for physically locking the lock, 15
Is a secret code storage unit that stores the secret code specified by the user, and its contents do not change unless the stored contents are changed or erased by the user, and 16 is all of the control information required by the processor controlling each unit of the vehicle. Alternatively, a part of the encrypted data is encrypted by an encryption procedure using a secret code stored in the secret key storage unit 15 as a key, and the encrypted data is stored, and 17 is the secret key storage unit 15.
The key is a key that is provided with the encrypted data storage unit 16 and is physically locked.

The password comparing unit 7 sends the password to the encrypted data generating unit 8 as a key for newly encrypting the control data when setting, changing or deleting the password.

Further, the encrypted data generating section 8 operates only when the result of the password comparison in the password comparing section 7 agrees, or when the password is not set.

The first storage means 9 is the control processor 1
The control process 12 is accessible only from 2 and when the vehicle is running until the engine is stopped after the vehicle is started.
Access from is also prohibited.

The second storage means 10 can always be accessed only by the control processor 12.

The temporary storage means 11 can always be accessed only by the control processor 12, and its contents are destroyed when locked.

The lock in which the lock 14 is incorporated is interlocked with the turning on / off of the power source, and is unlocked by the key in which the key 17 is incorporated.

Next, the operation of the locking device using the encrypted data having the above configuration will be described with reference to FIGS.

First, the user makes a request for inputting, setting, changing, or deleting a personal identification through the input requesting unit 2. Therefore, the input requesting unit 2 requests a command input and a password input, and accepts an input from the user. If the user's request is to set, change, or delete the password, the password writing unit 4 instructs the password storage unit 3 to change the contents of the lock and the key, and the password input by the user is locked. It is stored in the storage unit 3 and the key secret storage unit 15.

(A) Regarding the procedure for setting the secret code,
This will be described with reference to FIG. First, in the initial state, the secret code is not set, and this device functions as a mechanical locking device. Then, in S ₁ , the device is physically unlocked and the device is put into operation. In S ₂ , the input request unit 2 requests command input. In S _3, the user enters a "PIN Settings" command. In S ₄ , the input requesting unit 2 requests the input of the secret code, and the user inputs the “secret code”. In S ₅ , the input requesting unit 2 sends a “password setting” command and a “password” to the password comparing unit 7, and the password comparing unit 7 locks the password.
At the same time, the password is passed to the key information writing unit 5 so that the key is also written. Therefore, the key information writing unit 5 stores this secret code in the secret key storage unit 15. In S ₆ , the password comparison unit 7 requests the encrypted data generation unit 8 to generate encrypted data, and when the password is passed, the encrypted data generation unit 8 sends the encrypted data to the control processor 12. To request. Therefore, the control processor 12 reads the data from the first storage means 9 and passes it to the encrypted data generation unit 8. In S ₇ , the encrypted data generation unit 8 requests the key secret storage unit 3 to encrypt the data using the secret code as a key and write the result to the encrypted data storage unit 16. In S _8, the encrypted control data to the encrypted data storage unit 16 is stored, setting the PIN is completed.

Thereafter, every time the user physically unlocks the user, the user is required to input the password. Then, the device is put into operation only when all the secret codes input by the user and the secret codes of the key match.

(B) A procedure for changing the secret code will be described with reference to FIG. First, in S _10, performs a physical unlocking, the present apparatus and health. In S ₁₁ , the input requesting unit 2 requests command input. In S _12, the user inputs a "password change" command. In S ₁₃ , the input requesting unit 2 requests the input of the secret code. In S ₁₄ , the user inputs the personal identification code, and the input requesting unit 2 passes the personal identification number to the personal identification comparing unit 7. S
_{At 15} , the secret code comparison unit 7 requests the key information writing unit 5 to read the secret code stored in the key secret code storage unit 15. Therefore, the key information writing unit 5 reads the content of the key secret storing unit 15 and transfers it to the secret comparing unit 7. This password comparison unit 7 compares the password input by the user with the password loaded from the key 17 and the password stored in the key password storage unit 3,
If they match, the process proceeds to S ₁₆ , and if they do not match, the process returns to S ₁₂ to request the command input again. In S _16, the input request unit 2 prompts for personal identification, the user enters a new password. Then, when the input requesting unit 2 sends the “password setting command” and the “new password” to the password comparing unit 7, the password comparing unit 7 writes the new password in the lock password storing unit 3 and
A new secret code is passed to the key information writing unit 5 so that the key 17 is also written. Therefore, the key information writing unit 5 stores the new secret code in the secret key storage unit 15. In S ₁₇ , the password comparison unit 7 requests the encrypted data generation unit 8 to generate encrypted data, and when the password is passed, the encrypted data generation unit 8 sends the encrypted data to the control processor 12. To request. Therefore, this control program 12 is the first
The data is read from the storage unit 9 and passed to the encrypted data generation unit 8. In S ₁₈ , the encrypted data generation unit 8 requests the key secret storage unit 3 to encrypt the data using the new secret key as a key and write the result to the encrypted data storage unit 16. In S ₁₉ , the encrypted control data is stored in the encrypted data storage unit 16, and the setting of the new secret code is completed.

(C) A procedure for canceling the secret code will be described with reference to FIG. First, in S _20, performs a physical unlocking, to the device in the operational state. In S _21, the input request unit 2 requests the command input. In S _22, the user enters a "personal identification Delete" command. In S _23, the input request unit 2 requests input of an identification. In S ₂₄ , the user inputs the secret code, and the input request unit 2 passes the secret code to the secret code comparing unit 7. The secret code comparing unit 7 requests the key information reading unit 6 to read the secret code stored in the key secret storing unit 15. Therefore, the key information reading unit 6 reads the secret code stored in the key secret code storage unit 15 and passes it to the secret code comparing unit 7. S ₂₇
In, the PIN comparator 7 compares the password that the user has been stored in the identification and lock password storage unit 3 loaded from the secret and the key input, moves S ₂₆ In If they match, if disagreement S ₂₂ Return to and request command input again. At S ₂₆ , the passwords stored in the lock password storage unit 3 and the key password storage unit 15 are deleted.

(D) Locking procedure will be described with reference to FIG. In S ₃₁ , the key 17 is removed from the lock 14 (unlocked)
Then, in S ₃₂ , the power of this device is turned off. At S ₃₃ , the control data stored in the temporary storage means 11 is destroyed.
Therefore, the control processor 12 cannot control each part of the vehicle because the control data is insufficient. This enables locking.

Here, even if the device is physically unlocked by some means and the device is energized to be in an operating state,
Unless the user can obtain the secret code and the key 17 only known to the user, the contents of the temporary storage means 11 are meaningless, and the control processor 12 cannot operate the vehicle without controlling each part of the vehicle.

(E) The unlocking processing procedure will be described with reference to FIG.

First, the device is physically unlocked to bring the device into operation. In S _40, the input request unit 2 requests the command input. In S ₄₁ , the user inputs the “password”, and the input requesting unit 2 passes the “password” to the password comparing unit 7. S ₄₂
Then, when the secret code comparing unit 7 requests the key information reading unit 6 to read the secret stored in the key secret storing unit 15, the key information reading unit 6 reads the secret and sends it to the secret comparing unit 7. In S _43, the personal identification comparison unit 7 compares the password that the user has been stored in the identification and lock password storage unit 3 loaded from the secret and the key password storage unit 15 input, the process returns to S ₄₁ if disagreement, if they match, the process proceeds to S _44. Therefore, in S _44, the personal identification comparison unit 7 passes the PIN with requests the data decoding unit 13 to decode the control data. Therefore, when the data decryption unit 13 requests encrypted data from the key information read unit 6, the key information read unit 6 reads the data from the encrypted data storage unit 16 and passes it to the data decryption unit 13. In S ₄₅ , the data decryption unit 3 decrypts the control data using the secret code as a key, and writes the result in the temporary storage means 11 to the control processor 1.
Ask 2. In _S46 , the control processor 12 stores the encrypted control data in the temporary storage means 11 and ends the cancellation. In S _47, since, in the control processor 12 second
The control data stored in the storage unit 10 and the temporary storage unit 11 can be used to control each part of the vehicle so that the vehicle can run.

[0025]

As described above in detail, according to the present invention, when unlocking the lock of the vehicle, the physical unlocking is performed by the key, and then the password command and the password are input. Since the vehicle can be operated by performing the input operation of, it is possible to expect the effect of ensuring the safety of locking.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment according to the present invention.

FIG. 2 is a diagram showing a processing procedure for password setting in FIG.

FIG. 3 is a diagram showing a processing procedure for changing the secret code in FIG. 1;

FIG. 4 is a diagram showing a processing procedure for password release in FIG. 1;

5 is a diagram showing a processing procedure of locking in FIG.

6 is a diagram showing a processing procedure of unlocking in FIG.

[Explanation of symbols]

 2 input request unit 3 lock password storage unit 4 password writing unit 5 key information writing unit 6 key information reading unit 7 password comparing unit 8 encrypted data generating unit 9 and 10 storage unit 11 temporary storage unit 12 control processor 13 data decryption unit 15 Key code storage unit 16 Encrypted data storage unit

Claims (1)

[Claims] 1. A locking device for a vehicle, comprising a control device having a storage means, wherein the lock is a means for requesting a user's input, a means for storing a personal identification entered by the user, and a means for writing a personal identification in the storage means. And a means for writing the personal identification and encrypted data entered by the user into the key, a means for reading the personal identification and encrypted data stored in the key, and the personal identification and the key stored in the lock entered by the user. Comparison means for matching with the secret code stored in, the means for encrypting the vehicle control data, the means for decrypting the encrypted data, the means for storing the encrypted data and the non-encrypted data, respectively, It consists of means for temporarily storing the decrypted control data and means for controlling the hardware of each part of the vehicle based on the stored control data.The key is input by the user. A lock device using encrypted data, characterized by comprising means for storing a secret code and means for storing data encrypted corresponding to the secret code.