EP0596343A1 - Procédé d'introduction de données d'identification dans le microprocesseur d'une clé de véhicule à moteur - Google Patents

Procédé d'introduction de données d'identification dans le microprocesseur d'une clé de véhicule à moteur Download PDF

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Publication number
EP0596343A1
EP0596343A1 EP93117117A EP93117117A EP0596343A1 EP 0596343 A1 EP0596343 A1 EP 0596343A1 EP 93117117 A EP93117117 A EP 93117117A EP 93117117 A EP93117117 A EP 93117117A EP 0596343 A1 EP0596343 A1 EP 0596343A1
Authority
EP
European Patent Office
Prior art keywords
key
characteristic data
motor vehicle
microprocessor
generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93117117A
Other languages
German (de)
English (en)
Other versions
EP0596343B1 (fr
Inventor
Ralf Ranzenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19924236863 external-priority patent/DE4236863A1/de
Application filed by Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0596343A1 publication Critical patent/EP0596343A1/fr
Application granted granted Critical
Publication of EP0596343B1 publication Critical patent/EP0596343B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G07C2009/0042—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks the transmitted data signal containing a code which is changed
    • G07C2009/00476—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks the transmitted data signal containing a code which is changed dynamically
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00857—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed

Definitions

  • the invention relates to a method for entering characteristic data in the microprocessor of a motor vehicle key equipped with a transmitter for the wireless transmission of encrypted function commands to the receiver of a control device for the central locking and anti-theft device of a motor vehicle, and to a device for carrying out the method and one according to the procedure produced keys.
  • Keys are used for remote control of door locks on motor vehicles, in which a transmitter for wireless transmission of encrypted function commands is installed.
  • a receiver is arranged in the motor vehicle, which can decrypt the transmitted data and convert it into control signals.
  • it has already been proposed to change the coding continuously (DE-OS 34 06 746 and 35 29 882).
  • it is necessary for the transmission to take place in both directions and for the transmitter to be additionally assigned a receiver and the receiver additionally to be assigned a transmitter.
  • these methods are still not adequately secured against misuse because the coding scheme can be derived from several intercepted coded function commands and can then be used to gain unauthorized but non-destructive access to a vehicle. This disadvantage can be avoided if a certain fraction of the data telegram is always left out of the transmission and if the transmission takes place only in one direction.
  • This method does away with any documentation and labeling effort, but it is not ensured that key data stored in the key is accidentally transmitted on the production route to the receiver of a lock that does not mechanically match the key. As a result, mechanical and electronic individualization and synchronization fall apart and the affected key lock system is unusable. In addition, there is a risk that the key data stored in the key may be transmitted, read out and later misused during the manufacturing process without authorization.
  • the method according to the invention differs from the method according to patent application P 42 01 568.5 in that the key only at the end of the manufacturing process, ie. H. immediately before delivery of the vehicle, which is provided with the characteristic data, at a time when a mix-up of key and lock and an unauthorized actuation of the transmitter to determine the characteristic data is practically impossible.
  • the key is individualized according to a program that cannot be viewed, so that the characteristic data cannot even be determined by the person who inserts the key into the characteristic data programming device. This ensures the confidentiality of the identification data transmission is optimally guaranteed.
  • a production computer is advantageously used as the characteristic data generator 1.
  • This contains a microprocessor with pseudo-random generator and data memory as well as an interface.
  • the fixed code and change code data as well as all variable control commands that are necessary for the transmission operation of the key 3 are thus created according to a specific flow chart (FIG. 2).
  • the pseudo-random generator can be implemented both in terms of circuitry and software. The flowchart not only ensures that individual key data are created for each key, but also for internal controls that are necessary for the error-free process of the key data generation and its transmission.
  • the characteristic data generator 1 transfers the characteristic data to the characteristic data programming device 2, whereby a read-back checks in each case whether errors have occurred during the data transfer.
  • the characteristic data programming device 2 also contains a microprocessor with data memory, an interface to the characteristic data generator 1 and a key holder with an interface for the key 3 in the form of contacts.
  • the key 3 is equipped with a microprocessor, a working memory, a non-volatile memory, a pseudo-random generator, a transmitter, a battery, an actuating device in the form of buttons and an interface with input contacts.
  • the key 3 is inserted automatically or manually into the key holder of the characteristic data programming device 2, the input contacts of the key being connected to the contacts of the programming device 2.
  • its microprocessor is held in a reset mode and the necessary voltage supply is applied.
  • the transmission program is then started and key 3 programmed with the characteristic data.
  • it is checked by reading back whether the characteristic data transferred to the non-volatile memory of the key 3 matches the data record provided for the specific key in the programming device 2.
  • a corresponding feedback is sent to the programming device 2.
  • the programming process is repeated in the event of an error message. Only then is the key released for removal.
  • the part of the characteristic data record stored in the key intended for the receiver in the motor vehicle can then be transmitted wirelessly by a special actuation.
  • the receiver arranged in the motor vehicle decrypts the transmitted data and converts it into the corresponding control signals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
EP93117117A 1992-10-31 1993-10-22 Procédé d'allocation d'une clé de véhicule à moteur avec un émetteur à un récepteur d'un dispositif de contrôle d'un véhicule à moteur Expired - Lifetime EP0596343B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4236863 1992-10-31
DE19924236863 DE4236863A1 (de) 1992-01-22 1992-10-31 Verfahren zur Eingabe von Kenndaten in den Mikroprozessor eines Kraftfahrzeugschlüssels

Publications (2)

Publication Number Publication Date
EP0596343A1 true EP0596343A1 (fr) 1994-05-11
EP0596343B1 EP0596343B1 (fr) 2001-03-07

Family

ID=6471842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93117117A Expired - Lifetime EP0596343B1 (fr) 1992-10-31 1993-10-22 Procédé d'allocation d'une clé de véhicule à moteur avec un émetteur à un récepteur d'un dispositif de contrôle d'un véhicule à moteur

Country Status (2)

Country Link
EP (1) EP0596343B1 (fr)
DE (1) DE59310152D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618526A1 (de) * 1996-05-08 1997-11-20 Zangenstein Elektro Schloßsystem
EP0811739A2 (fr) * 1996-06-06 1997-12-10 F + G Megamos Sicherheitselektronik GMBH Dispositif et méthode pour vérifier l'autorisation de contrÔle d'accés, en particulier dispositif de fermeture des véhicules

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566823A1 (fr) * 1984-07-02 1986-01-03 Blaize Guy Systeme d'ouverture et de fermeture d'acces par serrure et cles a memoires
EP0372285A1 (fr) * 1988-12-06 1990-06-13 DELTA ELETTRONICA s.p.a. Dispositif pour transmettre à distance des signaux de contrôle de sécurité
WO1990015211A1 (fr) * 1989-06-02 1990-12-13 Tls Technologies Pty. Ltd. Systeme de securite
WO1991018169A1 (fr) * 1990-05-11 1991-11-28 Medeco Security Locks, Inc. Systeme de securite electronique
DE4201568A1 (de) * 1992-01-22 1993-07-29 Vdo Schindling Verfahren zur synchronisation von sender und empfaenger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566823A1 (fr) * 1984-07-02 1986-01-03 Blaize Guy Systeme d'ouverture et de fermeture d'acces par serrure et cles a memoires
EP0372285A1 (fr) * 1988-12-06 1990-06-13 DELTA ELETTRONICA s.p.a. Dispositif pour transmettre à distance des signaux de contrôle de sécurité
WO1990015211A1 (fr) * 1989-06-02 1990-12-13 Tls Technologies Pty. Ltd. Systeme de securite
WO1991018169A1 (fr) * 1990-05-11 1991-11-28 Medeco Security Locks, Inc. Systeme de securite electronique
DE4201568A1 (de) * 1992-01-22 1993-07-29 Vdo Schindling Verfahren zur synchronisation von sender und empfaenger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618526A1 (de) * 1996-05-08 1997-11-20 Zangenstein Elektro Schloßsystem
EP0811739A2 (fr) * 1996-06-06 1997-12-10 F + G Megamos Sicherheitselektronik GMBH Dispositif et méthode pour vérifier l'autorisation de contrÔle d'accés, en particulier dispositif de fermeture des véhicules
EP0811739A3 (fr) * 1996-06-06 1999-07-14 F + G Megamos Sicherheitselektronik GMBH Dispositif et méthode pour vérifier l'autorisation de contrÔle d'accés, en particulier dispositif de fermeture des véhicules
US6073064A (en) * 1996-06-06 2000-06-06 Delphi Automotive Systems Deutschland Gmbh Device and process for limiting access to authorized users

Also Published As

Publication number Publication date
EP0596343B1 (fr) 2001-03-07
DE59310152D1 (de) 2001-04-12

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