EP0155378A1 - Coding method for an electronic key - Google Patents

Coding method for an electronic key Download PDF

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Publication number
EP0155378A1
EP0155378A1 EP84115152A EP84115152A EP0155378A1 EP 0155378 A1 EP0155378 A1 EP 0155378A1 EP 84115152 A EP84115152 A EP 84115152A EP 84115152 A EP84115152 A EP 84115152A EP 0155378 A1 EP0155378 A1 EP 0155378A1
Authority
EP
European Patent Office
Prior art keywords
code
transmitter
receiver
reset
electronic key
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
EP84115152A
Other languages
German (de)
French (fr)
Other versions
EP0155378B1 (en
Inventor
Fr. Dr. tech./Phys. Dannhäuser
Erwin Dipl.Ing Heuwieser (Fh)
Heinz Dipl.Phys. Preissinger
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.)
Siemens AG
Original Assignee
Siemens 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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0155378A1 publication Critical patent/EP0155378A1/en
Application granted granted Critical
Publication of EP0155378B1 publication Critical patent/EP0155378B1/en
Expired legal-status Critical Current

Links

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
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional 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
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G07C2009/00238—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the transmittted data signal containing a code which is changed
    • G07C2009/00253—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the transmittted data signal containing a code which is changed dynamically, e.g. variable code - rolling code
    • 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
    • G07C2009/00785—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 by light
    • 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
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/06—Involving synchronization or resynchronization between transmitter and receiver; reordering of codes

Definitions

  • the invention relates to a method for code security in an electronic key, in particular for motor vehicles with a built-in central locking system, which consists of a transmitter which emits a coded infrared signal which is received by a receiver matched to the code, the code of Signals at the transmitter and receiver are automatically adjustable, and in which the transmitter sends a reset code after desynchronization or battery change in the transmitter or receiver.
  • Such a method is known from DE-A 32 34 538 and DE-A 32 34 539.
  • a number of code numbers are stored in the transmitter and receiver, a new matching code number being set automatically in the transmitter and receiver after each transmission and reception operation, which can be done continuously or using a random number generator.
  • a reset code is sent in the known method. This opens immediately or after the next key press.
  • the reset Code represents a security vulnerability, since unauthorized copying enables an unauthorized user to open the lock with the help of the reset code.
  • the object of the invention is therefore to develop the method of the type specified in the introduction in such a way that unauthorized opening is prevented with the aid of the reset code.
  • This object is achieved in that the reset code is activated by typing in a binary number.
  • auxiliary key preferably a recessed “pencil key” (micro key that can only be actuated with a specific pen) and with the transmitter switched on.
  • the electronic key can be designed in such a way that the typed number is deleted again after a few sending operations of the reset code, so that unauthorized use is further complicated.
  • the electronic key can be provided with a "repeat block", i.e. if a number is entered incorrectly, the typing of a new number is blocked for a certain time.

Abstract

1. A method of code protection for an electronic key, in particular for motor vehicles with built-in central locking, which consists of a transmitter which transmits a coded infra-red signal which is received by a receiver tuned to the code, where the code of the signal can be automatically adjusted in the transmitter and the receiver, and where the transmitter transmits a reset code following desynchronisation or following a change of battery in the transmitter or the receiver, characterised in that the reset code is activated by the tapping-in of a binary number.

Description

Die Erfindung betrifft ein Verfahren zur Code-Sicherung bei einem elektronischen Schlüssel, insbesondere für Kraftfahrzeuge mit eingebauter Zentralverriegelung, der aus einem Sender besteht, welcher ein codiertes Infrarot-Signal aussendet, das von einem auf den Code abgestimmten Empfänger aufgenommen wird, wobei der Code des Signals bei Sender und Empfänger automatisch verstellbar sind, und bei dem der Sender nach Desynchronisation oder Batteriewechsel im Sender bzw. Empfänger einen Reset-Code sendet.The invention relates to a method for code security in an electronic key, in particular for motor vehicles with a built-in central locking system, which consists of a transmitter which emits a coded infrared signal which is received by a receiver matched to the code, the code of Signals at the transmitter and receiver are automatically adjustable, and in which the transmitter sends a reset code after desynchronization or battery change in the transmitter or receiver.

Ein derartiges Verfahren ist aus der DE-A 32 34 538 und DE-A 32 34 539 bekannt. Dabei sind im Sender und Empfänger eine Anzahl von Code-Nummern gespeichert, wobei nach jedem Sende- und Empfangsvorgang im Sender und Empfänger eine neue übereinstimmende Code-Nummer selbsttätig eingestellt wird, was fortlaufend oder unter Verwendung eines Zufallsgenerators geschehen kann. Dadurch wird aus einer großen Anzahl von Möglichkeiten, bei beispielsweise 24 Bits 224 = 16 Mio., ein beliebiges Bitmuster ausgewählt, so daß ein unrechtmäßiger Gebrauch eines codierten Codes beispielsweise durch Kopieren, praktisch ausgeschlossen ist.Such a method is known from DE-A 32 34 538 and DE-A 32 34 539. A number of code numbers are stored in the transmitter and receiver, a new matching code number being set automatically in the transmitter and receiver after each transmission and reception operation, which can be done continuously or using a random number generator. As a result, an arbitrary bit pattern is selected from a large number of possibilities, for example 24 bits 2 24 = 16 million, so that unlawful use of a coded code, for example by copying, is practically impossible.

Um dabei auch nach Batteriewechsel im Sender (Batterie im Schlüssel) bzw. Empfänger (Kraftfahrzeugakkumulator) oder nach Desynchronisation (Code befindet sich außerhalb des Fangbereichs) das Schloß öffnen zu können, wird bei dem bekannten Verfahren ein Reset-Code gesendet. Dieser öffnet sofort oder nach dem nächsten Tastendruck. Der Reset-Code stellt eine Sicherheitslücke dar, da bei einem unberechtigten Kopieren ein unbefugter Benutzer in die Lage versetzt wird, das Schloß mit Hilfe des Reset-Codes zu öffnen.In order to be able to open the lock even after changing the battery in the transmitter (battery in the key) or receiver (motor vehicle accumulator) or after desynchronization (code is outside the catch range), a reset code is sent in the known method. This opens immediately or after the next key press. The reset Code represents a security vulnerability, since unauthorized copying enables an unauthorized user to open the lock with the help of the reset code.

Aufgabe der Erfindung ist es daher, das Verfahren der eingangs angegebenen Art derart weiterzubilden, daß das unberechtigte Öffnen mit Hilfe des Reset-Codes verhindert wird.The object of the invention is therefore to develop the method of the type specified in the introduction in such a way that unauthorized opening is prevented with the aid of the reset code.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Reset-Code durch Eintippen einer Binärzahl aktiviert wird.This object is achieved in that the reset code is activated by typing in a binary number.

Damit wird der Vorteil erzielt, daß der Reset-Code nur nach Eintippen einer Binärzahl (z.B. 8 bis 16 Bit) in den Sender aktiviert wird, womit eine unbefugte Benutzung des elektronischen Schlüssels praktisch ausgeschlossen wird.This has the advantage that the reset code is only activated after a binary number (e.g. 8 to 16 bits) is typed into the transmitter, which practically precludes unauthorized use of the electronic key.

Vorteilhaft erfolgt das Eingeben in einem Morse-Code über eine Hilfstaste, vorzugsweise eine versenkt angeordnete- "Bleistifttaste" (Mikrotaste, die nur mit einem bestimmten Stift betätigt werden kann) und bei eingeschaltetem Sender.The entry in a Morse code advantageously takes place via an auxiliary key, preferably a recessed “pencil key” (micro key that can only be actuated with a specific pen) and with the transmitter switched on.

Der elektronische Schlüssel kann so ausgebildet sein, daß die eingetippte Zahl nach einigen Sendevorgängen des Reset-Codes wieder gelöscht wird, so daß ein unbefugtes Benutzen weiter erschwert wird.The electronic key can be designed in such a way that the typed number is deleted again after a few sending operations of the reset code, so that unauthorized use is further complicated.

Ferner kann der elektronische Schlüssel mit einer "Wiederholungssperre" versehen sein, d.h. bei einer falsch eingegebenen Zahl wird das Eintippen einer neuen Zahl eine bestimmte Zeit blociert.Furthermore, the electronic key can be provided with a "repeat block", i.e. if a number is entered incorrectly, the typing of a new number is blocked for a certain time.

Claims (4)

1. Verfahren zur Code-Sicherung bei einem elektronischen Schlüssel, insbesondere für Kraftfahrzeuge mit eingebauter Zentralverriegelung, der aus einem Sender besteht, welcher ein codiertes Infrarotsignal aussendet, das von einem auf den Code abgestimmten Empfänger aufgenommen wird, wobei der Code des Signals bei Sender und Empfänger automatisch verstellbar sind, und bei dem der Sender nach Desynchronisation oder Batteriewechsel im Sender bzw. Empfänger einen Reset-Code sendet, dadurch gekennzeichnet, daß der Reset-Code durch Eintippen einer Binärzahl aktiviert wird.1. A method for code security for an electronic key, in particular for motor vehicles with a built-in central locking system, which consists of a transmitter which emits a coded infrared signal which is received by a receiver tuned to the code, the code of the signal at the transmitter and Receivers are automatically adjustable, and in which the transmitter sends a reset code after desynchronization or battery change in the transmitter or receiver, characterized in that the reset code is activated by typing in a binary number. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Binärzahl in einem Morse-Code über eine Hilftaste, vorzugsweise eine versenkt angeordnete "Bleistifttaste", bei eingeschaltetem Sender eingegeben wird.2. The method according to claim 1, characterized in that the binary number in a Morse code via an auxiliary key, preferably a recessed "pencil key", is entered when the transmitter is switched on. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die eingetippte Zahl nach einigen Sendevorgängen des Reset-Codes wieder gelöscht wird.3. The method according to claim 1 or 2, characterized in that the typed number is deleted again after a few transmissions of the reset code. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Eingabe der Binärzahl mit einer zeitlich begrenzten "Wiederholungssperre" verbunden ist.4. The method according to any one of claims 1 to 3, characterized in that the input of the binary number is associated with a time-limited "repeat block".
EP84115152A 1984-02-29 1984-12-11 Coding method for an electronic key Expired EP0155378B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3407469 1984-02-29
DE19843407469 DE3407469A1 (en) 1984-02-29 1984-02-29 METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY

Publications (2)

Publication Number Publication Date
EP0155378A1 true EP0155378A1 (en) 1985-09-25
EP0155378B1 EP0155378B1 (en) 1988-06-22

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Family Applications (1)

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EP84115152A Expired EP0155378B1 (en) 1984-02-29 1984-12-11 Coding method for an electronic key

Country Status (2)

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EP (1) EP0155378B1 (en)
DE (2) DE3407469A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0257376A1 (en) * 1986-08-12 1988-03-02 Siemens Aktiengesellschaft Electronic locking system comprising at least a lock, particularly for motor cars
US6108326A (en) * 1997-05-08 2000-08-22 Microchip Technology Incorporated Microchips and remote control devices comprising same
US6166650A (en) * 1991-05-29 2000-12-26 Microchip Technology, Inc. Secure self learning system
WO2005043451A2 (en) * 2003-08-05 2005-05-12 Pedersen Steinar System for identification of a person
US6980655B2 (en) 2000-01-21 2005-12-27 The Chamberlain Group, Inc. Rolling code security system
US10652743B2 (en) 2017-12-21 2020-05-12 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US10862924B2 (en) 2005-06-30 2020-12-08 The Chamberlain Group, Inc. Method and apparatus to facilitate message transmission and reception using different transmission characteristics
US10944559B2 (en) 2005-01-27 2021-03-09 The Chamberlain Group, Inc. Transmission of data including conversion of ternary data to binary data
US10997810B2 (en) 2019-05-16 2021-05-04 The Chamberlain Group, Inc. In-vehicle transmitter training
US11074773B1 (en) 2018-06-27 2021-07-27 The Chamberlain Group, Inc. Network-based control of movable barrier operators for autonomous vehicles
US11423717B2 (en) 2018-08-01 2022-08-23 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636822C2 (en) * 1986-10-29 1993-12-23 Ruf Kg Wilhelm Electronic remote control device, in particular for central locking systems of motor vehicles
US6175312B1 (en) 1990-05-29 2001-01-16 Microchip Technology Incorporated Encoder and decoder microchips and remote control devices for secure unidirectional communication
DE4302550C2 (en) * 1993-01-29 1997-02-20 Siemens Ag Vehicle locking system
US6690796B1 (en) 1995-05-17 2004-02-10 The Chamberlain Group, Inc. Rolling code security system
AU710682B2 (en) 1995-05-17 1999-09-30 Chamberlain Group, Inc., The Rolling code security system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754164A (en) * 1971-04-01 1973-08-21 P Zorzy Electronic combination lock
FR2420008A1 (en) * 1978-03-17 1979-10-12 Neiman Sa MOTOR VEHICLE LOCK CONTROL DEVICE
EP0098437A2 (en) * 1982-07-09 1984-01-18 Hülsbeck & Fürst GmbH. & Co. KG Electronic locking device with key and lock parts interacting by means of electric pulses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754164A (en) * 1971-04-01 1973-08-21 P Zorzy Electronic combination lock
FR2420008A1 (en) * 1978-03-17 1979-10-12 Neiman Sa MOTOR VEHICLE LOCK CONTROL DEVICE
EP0098437A2 (en) * 1982-07-09 1984-01-18 Hülsbeck & Fürst GmbH. & Co. KG Electronic locking device with key and lock parts interacting by means of electric pulses

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELECTRONIC DESIGN, Band 30, Nr. 4, 1982, Seite 204, Waseca, MN, Denville, NJ, US; J. KLIMEK: "Shift register and comparators make effective keyless lock" *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0257376A1 (en) * 1986-08-12 1988-03-02 Siemens Aktiengesellschaft Electronic locking system comprising at least a lock, particularly for motor cars
US6166650A (en) * 1991-05-29 2000-12-26 Microchip Technology, Inc. Secure self learning system
US6108326A (en) * 1997-05-08 2000-08-22 Microchip Technology Incorporated Microchips and remote control devices comprising same
US6985472B2 (en) 1997-05-08 2006-01-10 Microchip Technology Incorporated Method of communication using an encoder microchip and a decoder microchip
US6980655B2 (en) 2000-01-21 2005-12-27 The Chamberlain Group, Inc. Rolling code security system
WO2005043451A2 (en) * 2003-08-05 2005-05-12 Pedersen Steinar System for identification of a person
WO2005043451A3 (en) * 2003-08-05 2006-03-23 Pedersen Steinar System for identification of a person
US10944559B2 (en) 2005-01-27 2021-03-09 The Chamberlain Group, Inc. Transmission of data including conversion of ternary data to binary data
US11799648B2 (en) 2005-01-27 2023-10-24 The Chamberlain Group Llc Method and apparatus to facilitate transmission of an encrypted rolling code
US10862924B2 (en) 2005-06-30 2020-12-08 The Chamberlain Group, Inc. Method and apparatus to facilitate message transmission and reception using different transmission characteristics
US11122430B2 (en) 2017-12-21 2021-09-14 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US11778464B2 (en) 2017-12-21 2023-10-03 The Chamberlain Group Llc Security system for a moveable barrier operator
US10652743B2 (en) 2017-12-21 2020-05-12 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US11074773B1 (en) 2018-06-27 2021-07-27 The Chamberlain Group, Inc. Network-based control of movable barrier operators for autonomous vehicles
US11763616B1 (en) 2018-06-27 2023-09-19 The Chamberlain Group Llc Network-based control of movable barrier operators for autonomous vehicles
US11423717B2 (en) 2018-08-01 2022-08-23 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network
US11869289B2 (en) 2018-08-01 2024-01-09 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network
US10997810B2 (en) 2019-05-16 2021-05-04 The Chamberlain Group, Inc. In-vehicle transmitter training
US11462067B2 (en) 2019-05-16 2022-10-04 The Chamberlain Group Llc In-vehicle transmitter training

Also Published As

Publication number Publication date
DE3407469A1 (en) 1985-09-05
DE3472281D1 (en) 1988-07-28
EP0155378B1 (en) 1988-06-22

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