DE3320721A1 - A method for code protection for an electronic key - Google Patents

A method for code protection for an electronic key

Info

Publication number
DE3320721A1
DE3320721A1 DE19833320721 DE3320721A DE3320721A1 DE 3320721 A1 DE3320721 A1 DE 3320721A1 DE 19833320721 DE19833320721 DE 19833320721 DE 3320721 A DE3320721 A DE 3320721A DE 3320721 A1 DE3320721 A1 DE 3320721A1
Authority
DE
Germany
Prior art keywords
method
electronic key
code protection
protection
code
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Withdrawn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
DE19833320721
Other languages
German (de)
Inventor
Friedrich Dr Dannhaeuser
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 DE19833320721 priority Critical patent/DE3320721A1/en
Publication of DE3320721A1 publication Critical patent/DE3320721A1/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual entry or exit registers
    • G07C9/00007Access-control involving the use of a pass
    • G07C9/00015Access-control involving the use of a pass the pass having a variable code, e.g. varied by the controlling system
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual entry or exit registers
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182Electronically 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
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual entry or exit registers
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182Electronically 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
    • G07C2009/00238Electronically 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
    • G07C2009/00253Electronically 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
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual entry or exit registers
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753Electronically 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
    • G07C2009/00769Electronically 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
    • G07C2009/00785Electronically 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
DE19833320721 1983-06-08 1983-06-08 A method for code protection for an electronic key Withdrawn DE3320721A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833320721 DE3320721A1 (en) 1983-06-08 1983-06-08 A method for code protection for an electronic key

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19833320721 DE3320721A1 (en) 1983-06-08 1983-06-08 A method for code protection for an electronic key
EP84106142A EP0128457A3 (en) 1983-06-08 1984-05-29 Coding method for an electronic key
JP11632884A JPS6010081A (en) 1983-06-08 1984-06-06 Code preventing method of electric lock

Publications (1)

Publication Number Publication Date
DE3320721A1 true DE3320721A1 (en) 1984-12-13

Family

ID=6200962

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833320721 Withdrawn DE3320721A1 (en) 1983-06-08 1983-06-08 A method for code protection for an electronic key

Country Status (3)

Country Link
EP (1) EP0128457A3 (en)
JP (1) JPS6010081A (en)
DE (1) DE3320721A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520397A1 (en) * 1985-06-07 1986-12-11 Audi Ag A method for encoding
DE3624707A1 (en) * 1985-07-22 1987-01-22 Aisin Seiki Schloss control device for vehicles
DE3636822C1 (en) * 1986-10-29 1987-10-15 Ruf Kg Wilhelm Electronic Fernbetaetigungseinrichtung, particularly for central locking systems of motor vehicles
FR2616252A1 (en) * 1987-06-04 1988-12-09 Lot Gerard Method and installation for monitoring movements in a protected area
DE3840857A1 (en) * 1988-12-03 1990-06-07 Hella Kg Hueck & Co Device for the remote control of security devices
DE4221142A1 (en) * 1992-06-27 1994-01-13 Kiekert Gmbh Co Kg Central locking system for vehicle with remote operation - has coder and decoder operative at two ranges of frequency to cover radio transmission and light transmission
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
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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3536378A1 (en) * 1985-10-11 1987-04-16 Bayerische Motoren Werke Ag Safety device for a motor vehicle
US4854143A (en) * 1987-08-07 1989-08-08 Intelock Corporation Bolt assembly and method
JP3319230B2 (en) * 1994-08-05 2002-08-26 株式会社デンソー Remote control device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595797A (en) * 1978-04-21 1981-08-19 Pushman Hugh John Security systems
DE3237622A1 (en) * 1982-10-11 1984-04-12 Bayerische Motoren Werke Ag safety device

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520397A1 (en) * 1985-06-07 1986-12-11 Audi Ag A method for encoding
DE3624707A1 (en) * 1985-07-22 1987-01-22 Aisin Seiki Schloss control device for vehicles
US4926332A (en) * 1985-07-22 1990-05-15 Aisin Seiki Kabushiki Kaisha Locking device for vehicles
DE3636822C1 (en) * 1986-10-29 1987-10-15 Ruf Kg Wilhelm Electronic Fernbetaetigungseinrichtung, particularly 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
FR2616252A1 (en) * 1987-06-04 1988-12-09 Lot Gerard Method and installation for monitoring movements in a protected area
DE3840857A1 (en) * 1988-12-03 1990-06-07 Hella Kg Hueck & Co Device for the remote control of security devices
US6166650A (en) * 1991-05-29 2000-12-26 Microchip Technology, Inc. Secure self learning system
DE4221142A1 (en) * 1992-06-27 1994-01-13 Kiekert Gmbh Co Kg Central locking system for vehicle with remote operation - has coder and decoder operative at two ranges of frequency to cover radio transmission and light transmission
US5477214A (en) * 1992-06-27 1995-12-19 Kiekert Gmbh & Co. Kg Central lock system for automotive vehicle
DE4221142C2 (en) * 1992-06-27 1998-02-19 Kiekert Ag Central locking system for a motor vehicle
US8633797B2 (en) 1995-05-17 2014-01-21 The Chamberlain Group, Inc. Rolling code security system
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
US6985472B2 (en) 1997-05-08 2006-01-10 Microchip Technology Incorporated Method of communication using an encoder microchip and a decoder microchip
US6108326A (en) * 1997-05-08 2000-08-22 Microchip Technology Incorporated Microchips and remote control devices comprising same

Also Published As

Publication number Publication date
EP0128457A2 (en) 1984-12-19
EP0128457A3 (en) 1987-07-22
JPS6010081A (en) 1985-01-19

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Legal Events

Date Code Title Description
8130 Withdrawal