DE3407436A1 - METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY - Google Patents

METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY

Info

Publication number
DE3407436A1
DE3407436A1 DE19843407436 DE3407436A DE3407436A1 DE 3407436 A1 DE3407436 A1 DE 3407436A1 DE 19843407436 DE19843407436 DE 19843407436 DE 3407436 A DE3407436 A DE 3407436A DE 3407436 A1 DE3407436 A1 DE 3407436A1
Authority
DE
Germany
Prior art keywords
code
receiver
transmitter
securing
reset
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Withdrawn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
DE19843407436
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 DE19843407436 priority Critical patent/DE3407436A1/en
Priority to EP84115594A priority patent/EP0154019B1/en
Priority to DE8484115594T priority patent/DE3472814D1/en
Publication of DE3407436A1 publication Critical patent/DE3407436A1/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Withdrawn legal-status Critical Current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
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Lock And Its Accessories (AREA)

Description

Siemens Aktiengesellschaft Unser ZeichenSiemens Aktiengesellschaft Our mark

Berlin und München . VPA 84 P 1 1 7 7 DEBerlin and Munich. VPA 84 P 1 1 7 7 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 Fchlüssel, 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 in an electronic key, in particular 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 from DE-A 32 34 538 and DE-A 32 34 539 known. There are in the sender and receiver a number of code numbers are stored, with one after each sending and receiving process in the transmitter and receiver new matching code number is automatically set, which can be done continuously or using a random generator. This turns a big one Number of possibilities, for example with 24 bits 2 = 16 million, any bit pattern selected 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

- it - VPA 84 P 1 1 7 7 DE- it - VPA 84 P 1 1 7 7 DE

Code stellt eine Sxcherheitslücke 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 loophole, 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 ein vom Empfänger angesteuertes Schloß zum Öffnen mit einem mechanischen Schlüssel freigibt.This object is achieved in that the Reset code enables a lock controlled by the receiver to be opened with a mechanical key.

Damit wird der Vorteil erzielt, daß durch die Aussendung des Reset-Codes die Öffnung nur vorbereitet wird. Dies geschieht beispielsweise, indem der Reset-Code ein Steuersignal veranlaßt, welches das Schloß elektronisch öffnet. Dabei öffnet ein Relais nur einen Riegel, wonach der zweite Riegel mit dem mechanischen Schlüssel geöffnet werden kann. Gleichzeitig mit dieser "teilweisen" Öffnung des Schlosses synchronisiert der Reset-Code in bekannter Weise Sender und Empfänger, d.h. er setzt den zu dieser Schlüsselnummer gehörigen Zähler im Empfänger auf den Wert des Zählers im Schlüssel.This has the advantage that by sending the reset code only prepares the opening. This is done, for example, by sending the reset code a control signal causes the lock to open electronically. One relay only opens one bolt, after which the second The bolt can be opened with the mechanical key. Simultaneously with this "partial" opening of the lock the reset code synchronizes the transmitter and receiver in a known way, i.e. it sets the to this key number corresponding counter in the receiver to the value of the counter in the key.

Die "teilweise" Öffnung des Schlosses kann beispielsweise dadurch vorgenommen werden, daß im Empfänger zwei Ausgänge vorhanden sind, die entweder den Zustand "H" oder "L" annehmen können und zur Unterscheidung von "Freigabe des mechanischen Schlüssel" und "volles Öffnen" benutzt werden können. Bei nur teilweiser Freigabe wird nur ein Ausgang auf "L" gesetzt, während bei vollem Öffnen beide Ausgänge "L" sind.The "partial" opening of the lock can be done, for example, by having two outputs in the receiver are present, which can either assume the status "H" or "L" and to distinguish between "release of the." mechanical key "and" full opening "can be used. With only partial release, only one output is possible set to "L", while both outputs are "L" when fully opened.

1 Patentanspruch1 claim

Claims (1)

3A07A36 - * - VPA 84 P 1 1 7 7 DE 3A07A36 - * - VPA 84 P 1 1 7 7 DE PatentanspruchClaim 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 ein vom Empfänger angesteuertes Schloß zum Öffnen mit einem mechanischen Schlüssel freigibt.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 a dated The receiver-controlled lock can be opened with a mechanical key.
DE19843407436 1984-02-29 1984-02-29 METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY Withdrawn DE3407436A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19843407436 DE3407436A1 (en) 1984-02-29 1984-02-29 METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY
EP84115594A EP0154019B1 (en) 1984-02-29 1984-12-17 Coding method for an electronic key
DE8484115594T DE3472814D1 (en) 1984-02-29 1984-12-17 Coding method for an electronic key

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843407436 DE3407436A1 (en) 1984-02-29 1984-02-29 METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY

Publications (1)

Publication Number Publication Date
DE3407436A1 true DE3407436A1 (en) 1985-08-29

Family

ID=6229210

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19843407436 Withdrawn DE3407436A1 (en) 1984-02-29 1984-02-29 METHOD FOR SECURING THE CODE OF AN ELECTRONIC KEY
DE8484115594T Expired DE3472814D1 (en) 1984-02-29 1984-12-17 Coding method for an electronic key

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8484115594T Expired DE3472814D1 (en) 1984-02-29 1984-12-17 Coding method for an electronic key

Country Status (2)

Country Link
EP (1) EP0154019B1 (en)
DE (2) DE3407436A1 (en)

Cited By (10)

* 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
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
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
DE4325137A1 (en) * 1993-07-27 1995-02-02 Rbr Computertechnik Gmbh Process for actuating closure mechanisms with the aid of identification means
DE4421496B4 (en) * 1993-10-01 2006-09-07 Marquardt Gmbh Electronic door closing system on a motor vehicle
US6108326A (en) * 1997-05-08 2000-08-22 Microchip Technology Incorporated Microchips and remote control devices comprising same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2168972B1 (en) * 1972-01-28 1977-07-15 Cheops
DE2847730A1 (en) * 1978-11-03 1980-05-14 Sachs Systemtechnik Gmbh MAGNETIC SWITCH LOCK
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 (20)

* 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
US4847614A (en) * 1986-10-29 1989-07-11 Wilhelm Ruf Kg Electronic remote control means, especially for centrally controlled locking systems in motor vehicles
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
US10652743B2 (en) 2017-12-21 2020-05-12 The Chamberlain Group, Inc. Security system for a moveable barrier operator
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
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
EP0154019B1 (en) 1988-07-20
EP0154019A1 (en) 1985-09-11
DE3472814D1 (en) 1988-08-25

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Legal Events

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