DE3407469A1 - METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY - Google Patents

METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY

Info

Publication number
DE3407469A1
DE3407469A1 DE19843407469 DE3407469A DE3407469A1 DE 3407469 A1 DE3407469 A1 DE 3407469A1 DE 19843407469 DE19843407469 DE 19843407469 DE 3407469 A DE3407469 A DE 3407469A DE 3407469 A1 DE3407469 A1 DE 3407469A1
Authority
DE
Germany
Prior art keywords
code
transmitter
receiver
reset
securing
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.)
Withdrawn
Application number
DE19843407469
Other languages
German (de)
Inventor
Friedrich Dr.techn. 8000 München Dannhäuser
Erwin Dipl.-Ing. Heuwieser (FH), 8013 Haar
Heinz Dipl.-Ing. 8028 Taufkirchen 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
Priority to DE19843407469 priority Critical patent/DE3407469A1/en
Priority to DE8484115152T priority patent/DE3472281D1/en
Priority to EP84115152A priority patent/EP0155378B1/en
Publication of DE3407469A1 publication Critical patent/DE3407469A1/en
Withdrawn legal-status Critical Current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

Description

Siemens Aktiengesellschaft Unser ZeichenSiemens Aktiengesellschaft Our mark

Berlin und München VPA 84 P 1 1 7 8 DEBerlin and Munich VPA 84 P 1 1 7 8 DE

Verfahren zur Code-Sicherung bei einem elektronischen Schlüssel Procedure for securing the code in the case of an electronic key

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 securing codes an electronic key, especially for motor vehicles with built-in central locking, which consists of a transmitter that sends out a coded infrared signal, which is picked up by a receiver matched to the code, the code of the signal at the transmitter and Receiver are automatically adjustable, and in which the transmitter after desynchronization or battery change in The transmitter or receiver sends a reset code.

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 2 =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, with a new matching code number being automatically set after each transmission and reception process in the transmitter and receiver, which can be done continuously or using a random generator. As a result, any bit pattern is selected from a large number of possibilities, for example 24 bits 2 = 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-In order to do so after changing the battery in the transmitter (battery in the key) or receiver (vehicle battery) or to be able to open the lock after desynchronization (the code is outside the capture area), the known procedures sent a reset code. This opens immediately or after the next key press. The reset

Sac 1 Gae / 27.02.1984Sac 1 Gae / 02/27/1984

-j* --j * - VPA 84 P 1 1 78DEVPA 84 P 1 1 78DE

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.
5Code represents a security gap, since unauthorized copying enables an unauthorized user to open the lock with the help of the reset code.
5

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.
10The object of the invention is therefore to develop the method of the type specified at the beginning in such a way that unauthorized opening is prevented with the aid of the reset code.
10

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Reset-Code durch Eintippen einer Binärzahl aktiviert wird.According to the invention, 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 entered into the transmitter after entering a binary number (e.g. 8 to 16 bits) is activated, which means that unauthorized use of the electronic key is practically impossible.

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 input is advantageously carried out in a Morse code via an auxiliary key, preferably a sunk one "Pencil button" (micro button that can only be operated with a specific pen) and when the button is switched on Channel.

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 so that the number typed in after a few transmissions of the reset code is deleted again, so that unauthorized use is made more difficult.

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 equipped with a "repeat lock" be provided, i.e. if a number is entered incorrectly, typing a new number becomes a certain one Time blocked.

4 Patentansprüche4 claims

Claims (4)

VPA 84 P 1 1 7 8 DEVPA 84 P 1 1 7 8 DE PatentansprücheClaims Q). 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 g e kennzeichnet, daß der Reset-Code durch Eintippen einer Binärzahl aktiviert wird.Q). Procedure for securing the code in an electronic Keys, in particular for motor vehicles with built-in Central locking system, which consists of a transmitter that sends out a coded infrared signal that is picked up by a receiver matched to the code, with the code of the signal at the transmitter and receiver are automatically adjustable, and in which the transmitter after desynchronization or battery change in the transmitter or Receiver sends a reset code, characterized in that the reset code is typed in activated by 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 that the binary number in a Morse code via a help key, preferably a sunk one "Pencil button" 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 that the number entered will be deleted again after the reset code has been sent a few times. 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 the binary number is linked to a time-limited "repeat lock".
DE19843407469 1984-02-29 1984-02-29 METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY Withdrawn DE3407469A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19843407469 DE3407469A1 (en) 1984-02-29 1984-02-29 METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY
DE8484115152T DE3472281D1 (en) 1984-02-29 1984-12-11 Coding method for an electronic key
EP84115152A EP0155378B1 (en) 1984-02-29 1984-12-11 Coding method for an electronic key

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DE3407469A1 true DE3407469A1 (en) 1985-09-05

Family

ID=6229234

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19843407469 Withdrawn DE3407469A1 (en) 1984-02-29 1984-02-29 METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY
DE8484115152T Expired DE3472281D1 (en) 1984-02-29 1984-12-11 Coding method for an electronic key

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8484115152T Expired DE3472281D1 (en) 1984-02-29 1984-12-11 Coding method for an electronic key

Country Status (2)

Country Link
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
DE3636822C1 (en) * 1986-10-29 1987-10-15 Ruf Kg Wilhelm Electronic remote actuation device, in particular for central locking systems of motor vehicles
DE4302550A1 (en) * 1993-01-29 1994-08-04 Siemens Ag Vehicle central locking system with security coded remote release
US6690796B1 (en) 1995-05-17 2004-02-10 The Chamberlain Group, Inc. Rolling code security system
US6980655B2 (en) 2000-01-21 2005-12-27 The Chamberlain Group, Inc. Rolling code security system
US8194856B2 (en) 1995-05-17 2012-06-05 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
DE3774364D1 (en) * 1986-08-12 1991-12-12 Siemens Ag ELECTRONIC LOCKING SYSTEM WITH AT LEAST ONE LOCK, ESPECIALLY FOR 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
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
WO2005043451A2 (en) * 2003-08-05 2005-05-12 Pedersen Steinar System for identification of a person

Family Cites Families (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
DE3225754A1 (en) * 1982-07-09 1984-01-12 Hülsbeck & Fürst GmbH & Co KG, 5620 Velbert METHOD FOR THE LOCKING EFFECTIVE INTERACTION OF A KEY-LIKE PART WITH A LOCK-LIKE PART

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4847614A (en) * 1986-10-29 1989-07-11 Wilhelm Ruf Kg Electronic remote control means, especially for centrally controlled locking systems in motor vehicles
DE3636822C1 (en) * 1986-10-29 1987-10-15 Ruf Kg Wilhelm Electronic remote actuation device, in particular for central locking systems of motor vehicles
DE4302550A1 (en) * 1993-01-29 1994-08-04 Siemens Ag Vehicle central locking system with security coded remote release
US6690796B1 (en) 1995-05-17 2004-02-10 The Chamberlain Group, Inc. Rolling code security system
US8194856B2 (en) 1995-05-17 2012-06-05 The Chamberlain Group, Inc. Rolling code security system
US8233625B2 (en) 1995-05-17 2012-07-31 The Chamberlain Group, Inc. Rolling code security system
US8284021B2 (en) 1995-05-17 2012-10-09 The Chamberlain Group, Inc. Rolling code security system
US8633797B2 (en) 1995-05-17 2014-01-21 The Chamberlain Group, Inc. Rolling code security system
US6980655B2 (en) 2000-01-21 2005-12-27 The Chamberlain Group, Inc. Rolling code security system
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
EP0155378B1 (en) 1988-06-22
EP0155378A1 (en) 1985-09-25
DE3472281D1 (en) 1988-07-28

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Legal Events

Date Code Title Description
8130 Withdrawal
8165 Unexamined publication of following application revoked