EP1051556B1 - Systeme de verrouillage pour vehicule automobile a code evolutif et identification - Google Patents
Systeme de verrouillage pour vehicule automobile a code evolutif et identification Download PDFInfo
- Publication number
- EP1051556B1 EP1051556B1 EP99907432A EP99907432A EP1051556B1 EP 1051556 B1 EP1051556 B1 EP 1051556B1 EP 99907432 A EP99907432 A EP 99907432A EP 99907432 A EP99907432 A EP 99907432A EP 1051556 B1 EP1051556 B1 EP 1051556B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- code
- identification
- keyword
- locking
- unlocking
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
-
- 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
- G07C2009/00206—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 keyless data carrier being hand operated
- G07C2009/00214—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 keyless data carrier being hand operated by one push button
-
- 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
- G07C2009/0023—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 with encription of the transmittted data signal
-
- 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
- G07C2009/00246—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 periodically, e.g. after a time period
-
- 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
- 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 present invention relates to a locking system for doors of a motor vehicle, and more particularly to such a system comprising a remote control with an evolving code likely to require a resynchronization between transmitter and receiver.
- the object of the present invention is therefore to propose a system which allows reliable resynchronization between transmitter and receiver, whatever the because of the desynchronization.
- the present invention therefore also aims to propose a system which allows a reliable resynchronization between transmitter and receiver, which is economical, safe and transparent for the user.
- a locking system for a vehicle automobile comprising a device for locking / unlocking vehicle doors suitable for receiving a locking / unlocking code doors and to control unlocking if the code received corresponds to a expected code, said code being of the evolving type composed from a first keyword basic and a second pseudo-random keyword; an identification device and minus a key comprising on the one hand a remote control transmitter adapted for transmit a control code to the vehicle door control device locking / unlocking doors, on the other hand an identification responder adapted to transmit a key identification code in response to a request from the identification device.
- the command upon reception of a lock / unlock code doors that do not correspond to the expected code, the command memorizes the code received and updates its image of the second keyword by function of the code received if the identification device confirms a positive identification of the key.
- the updating day is only allowed if the confirmation of a positive identification of the key intervenes in a predetermined time interval after reception of the locking / unlocking.
- control device calculates the image of the second keyword by partial inversion of the code received according to the first basic keyword.
- control device determines the image of the second keyword by searching for the code received in a list of codes established from the basic keyword and a sequence of second keywords possible.
- the locking / unlocking code includes a public identification header of the key separate from the identification code and the device command memorizes the code received only if this header corresponds to one of the keys authorized.
- FIG. 1 in which a vehicle 1 has been represented. equipped with a door locking / unlocking control device 10 conventionally comprising a remote control receiver, a decoder adapted for compare a code received with an expected code and control means of motors or actuators operating the vehicle door locks. These means, well known in the prior art, will not be detailed further and are not shown explicitly in the drawing. Vehicle 1 is also equipped with an identification device 20, possibly forming part of a vehicle immobilizer. The control device 10 and the device 20 are connected to each other by a communication bus B.
- a key 30 equipped on the one hand a remote control transmitter 31, controlled by a switch 33 and powered by a battery 34, and on the other hand an identification responder 32.
- the driver presses the switch 33, which induces the remote control transmitter 31 to send an unlock code Ci to the locking control device 10.
- This transmission can be carried out by the 'Intermediate electromagnetic waves in radio frequencies, or by emission of infrared radiation.
- the code Ci issued is of the evolving type, that is to say that successive codes are different from each other.
- One classically carries out such a code by combining by an algorithm f a first basic keyword Cb with a second pseudo-random keyword Ni.
- This second keyword is generally developed from the number of presses on the switch 33 from an initialization step in which the control device 10 and the remote control transmitter 31 have been programmed with the same basic keyword.
- control device 10 receives an unlocking code Ci, it compares it with an expected code, developed by the same algorithm f, from the basic keyword Cb and the current image N'i of the second keyword it holds. If the code received corresponds to the expected code, the vehicle doors are unlocked.
- the image of the second keyword held by the remote control transmitter 31 can be modified and the Ci code issued does not correspond more to the code expected by the control device 10.
- the control device 10 stores the Ci unlock code received, but does not command unlocking of doors.
- the user is then led to mechanically unlock the doors at the using the mechanical part of the key and inserting the key into the contact cylinder of the vehicle to start the engine.
- This action then triggers a process identifying the key by means of an identification device 20, known as Phone.
- the identification device 20 sends an identification request by means of a magnetic coupling loop, request to which the identification responder 32 placed in the key responds by modulating the magnetic field emitted according to a code Xp identification.
- This identification code is compared to a reference code programmed in the identification device 20, to authorize the start of the engine in case of a match.
- the device identification 20 transmits via bus B, to the control device lock confirmation that the key presented is a key authorized.
- the control device 10 uses the unlocking code Ci received and memorized for update its image of the second keyword Ni.
- this update is carried out by calculating the value of the second keyword from the code Ci received and from the basic keyword Cb.
- the algorithm f for encryption of the code is at least partially invertible, that is to say that there is an algorithm f N -1 which makes it possible to obtain the value of Ni knowing Ci and Cb.
- Such algorithms are known to those skilled in the art and do not significantly degrade the security of the system because only knowledge of the basic keyword Cb makes it possible to find the second keyword Ni, and this basic keyword is never exchanged between the key and the vehicle outside the factory initialization phase.
- updating the second keyword can be performed, by analogy with the prior art, by searching for the code received Ci in a list of possible codes developed using the algorithm f of encryption from the basic keyword Cb and a sequence of second keywords Ni possible.
- searching for the code received Ci in a list of possible codes developed using the algorithm f of encryption from the basic keyword Cb and a sequence of second keywords Ni possible.
- the locking system according to the invention can be further improved by introducing certain additional checks before authorizing the update of the second keyword by the control device 10.
- the unlocking code Ci may include a header Public identification ID of the key, for example corresponding to a serial number of the key.
- a list of authorized keys can then be stored in the device.
- command 10 which will only react if the Ci code received includes an ID header corresponding to one of the keys in the list.
- This identification header stored in a non-volatile memory of the remote control transmitter 31, will not be affected by a possible reset linked to a battery change. Of course, it will Dispute of the identification code Xp of the identification responder which must remain secret.
- the locking system described above is not limited by the resynchronization technique exposed. It can be advantageously combined with the autonomous resynchronization method described in the preamble, in the cases where it gives satisfaction, and keep the characteristic of the association of the memorization of an unlocking code not recognized by the control device lock 10, with positive identification of the key by the identification device 20 in special cases (battery change for example) where resynchronization autonomous is failing.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lock And Its Accessories (AREA)
Description
- la figure 1 représente un schéma fonctionnel du système suivant l'invention, et
- la figure 2 représente le format d'un code transmis.
A titre d'exemple volontairement simplifié, on peut proposer un algorithme f de cryptage du type Ci = Cb XOR Ni où la fonction XOR est un OU exclusif portant sur les mots binaires Cb et Ni. Dans ce cas, l'algorithme fN -1 inverse serait Ni = Cb XOR Ci.
Claims (5)
- Système de verrouillage pour véhicule automobile, comportanta) un dispositif de commande (10) de verrouillage /déverrouillage des portières du véhicule adapté pour recevoir un code (Ci) de verrouillage / déverrouillage des portières et pour commander le déverrouillage si le code reçu correspond à un code (Cj) attendu, ledit code étant du type évolutif composé à partir d'un premier mot clé de base (Cb) et d'un second mot clé pseudo aléatoire (Ni)b) un dispositif d'identification (20), etc) au moins une clé (30) comprenantd'une part un émetteur de télécommande (31) adapté pour transmettre au dispositif de commande des portières du véhicule un code (Ci) de verrouillage / déverrouillage des portières,d'autre part un répondeur d'identification (32) adapté pour transmettre un code d'identification (Xp) de la clé en réponse à une requête du dispositif d'identification,des moyens de mémorisation adaptés pour mémoriser le code reçu lors d'une réception d'un code de verrouillage / déverrouillage des portières ne correspondant pas au code attendu, etdes moyens de mise à jour adaptés pour effectuer la mise à jour de son image du second mot clé en fonction du code reçu si le dispositif d'identification confirme une identification positive de la clé.
- Système de verrouillage selon la revendication 1, caractérisé en ce que les moyens de mise à jour n'effectuent celle-ci que si la confirmation d'une identification positive de la clé intervient dans un intervalle de temps prédéterminé après la réception du code de verrouillage / déverrouillage.
- Système de verrouillage selon la revendication 1, caractérisé en ce que le dispositif de commande est adapté pour calculer l'image du second mot clé (Ni) par inversion partielle du code reçu (Ci) en fonction du premier mot clé de base (Cb).
- Système de verrouillage selon la revendication 1, caractérisé en ce que le dispositif de commande est adapté pour déterminer l'image du second mot clé (Ni) par recherche du code reçu (Ci) dans une liste de codes établie à partir du mot clé de base et d'une séquence des seconds mots clé possibles.
- Système de verrouillage selon la revendication 1, caractérisé en ce que le code de verrouillage / déverrouillage comporte un en-tête d'identification public (ID) de la clé distinct du code d'identification (Xp) et en ce que les moyens de mémorisation ne mémorisent le code reçu que si cet en-tête correspond à une des clés autorisées.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9800982 | 1998-01-29 | ||
FR9800982A FR2774121B1 (fr) | 1998-01-29 | 1998-01-29 | Systeme de verrouillage pour vehicule automobile a code evolutif et identification |
PCT/EP1999/000520 WO1999039066A1 (fr) | 1998-01-29 | 1999-01-26 | Systeme de verrouillage pour vehicule automobile a code evolutif et identification |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1051556A1 EP1051556A1 (fr) | 2000-11-15 |
EP1051556B1 true EP1051556B1 (fr) | 2004-12-01 |
Family
ID=9522322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99907432A Expired - Lifetime EP1051556B1 (fr) | 1998-01-29 | 1999-01-26 | Systeme de verrouillage pour vehicule automobile a code evolutif et identification |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1051556B1 (fr) |
KR (1) | KR100591471B1 (fr) |
DE (1) | DE69922345T2 (fr) |
ES (1) | ES2234242T3 (fr) |
FR (1) | FR2774121B1 (fr) |
WO (1) | WO1999039066A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT501291B8 (de) * | 2005-02-09 | 2007-02-15 | Evva Werke | Schlüssel |
US9670694B2 (en) | 2007-04-12 | 2017-06-06 | Utc Fire & Security Americas Corporation, Inc. | Restricted range lockbox, access device and methods |
CN103835579A (zh) * | 2013-08-30 | 2014-06-04 | 苏州众显电子科技有限公司 | 一种带电量警示灯智能感应钥匙 |
US10124765B2 (en) | 2016-12-20 | 2018-11-13 | Ford Global Technologies, Llc | Keypad master code |
DE102018002157A1 (de) * | 2018-03-16 | 2019-09-19 | Zf Active Safety Gmbh | Vorrichtung und Verfahren zur verschlüsselten Übertragung eines digitalen Steuersignals von einem Kraftfahrzeugschlüssel an ein Kraftfahrzeug |
CN111080857B (zh) * | 2019-12-30 | 2022-05-03 | 华人运通(上海)云计算科技有限公司 | 车辆数字钥匙管理使用方法、装置、移动终端及存储介质 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2051442B (en) | 1979-03-30 | 1984-02-01 | Howard J A | Security system |
DE3536377A1 (de) | 1985-10-11 | 1987-04-16 | Bayerische Motoren Werke Ag | Sicherheitseinrichtung fuer kraftfahrzeuge |
EP0257376B2 (fr) | 1986-08-12 | 2001-07-25 | Siemens Aktiengesellschaft | Installation de fermeture électronique comportant au moins une serrure, en particulier applicable aux véhicules automobiles |
DE4440349A1 (de) * | 1994-11-11 | 1996-05-15 | Bayerische Motoren Werke Ag | Verfahren zum Synchronisieren zweier dialogfähiger Sender-Empfängereinheiten für ein Codesignal in einer Kraftfahrzeug-Schließanlage |
DE19533191B4 (de) * | 1995-09-08 | 2006-01-05 | Kiekert Ag | Verfahren zum Neueinrichten einer Zentralverriegelungsanlage eines Kraftfahrzeuges mit einer Fernbetätigungseinrichtung |
JPH09170365A (ja) * | 1995-09-08 | 1997-06-30 | Kiekert Gmbh & Co Kg | 遠隔操作装置並びにトランスポンダを具備した自動車用の施錠装置の操作方法 |
DE19607017C2 (de) * | 1996-02-24 | 2000-06-29 | Daimler Chrysler Ag | Fernbedienungseinrichtung und Betriebsverfahren hierfür, insbesondere zur Ansteuerung von kraftfahrzeugbezogenen Einrichtungen |
-
1998
- 1998-01-29 FR FR9800982A patent/FR2774121B1/fr not_active Expired - Fee Related
-
1999
- 1999-01-26 KR KR1020007008306A patent/KR100591471B1/ko not_active IP Right Cessation
- 1999-01-26 ES ES99907432T patent/ES2234242T3/es not_active Expired - Lifetime
- 1999-01-26 DE DE69922345T patent/DE69922345T2/de not_active Expired - Lifetime
- 1999-01-26 EP EP99907432A patent/EP1051556B1/fr not_active Expired - Lifetime
- 1999-01-26 WO PCT/EP1999/000520 patent/WO1999039066A1/fr active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
FR2774121A1 (fr) | 1999-07-30 |
DE69922345T2 (de) | 2005-05-12 |
ES2234242T3 (es) | 2005-06-16 |
WO1999039066A1 (fr) | 1999-08-05 |
EP1051556A1 (fr) | 2000-11-15 |
FR2774121B1 (fr) | 2000-04-07 |
KR100591471B1 (ko) | 2006-06-20 |
KR20010034480A (ko) | 2001-04-25 |
DE69922345D1 (de) | 2005-01-05 |
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