DE10237698A1 - Data-transmission method for transferring data between control units in a motor vehicle, uses control units to prepare and exchange encoded data records for vehicle functions - Google Patents
Data-transmission method for transferring data between control units in a motor vehicle, uses control units to prepare and exchange encoded data records for vehicle functions Download PDFInfo
- Publication number
- DE10237698A1 DE10237698A1 DE2002137698 DE10237698A DE10237698A1 DE 10237698 A1 DE10237698 A1 DE 10237698A1 DE 2002137698 DE2002137698 DE 2002137698 DE 10237698 A DE10237698 A DE 10237698A DE 10237698 A1 DE10237698 A1 DE 10237698A1
- Authority
- DE
- Germany
- Prior art keywords
- control unit
- data
- control units
- vehicle
- data records
- 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.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/606—Protecting data by securing the transmission between two devices or processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/0315—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using multiplexing techniques
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zur Übertragung von Daten zwischen mindestens zwei Steuereinheiten in einem Fahrzeug.The invention relates to a Method and device for transferring data between at least two control units in one vehicle.
Es ist bekannt, daß Daten zwischen Steuereinheiten in einem Fahrzeug durch ein nicht abgesichertes Übertragungsmedium übertragen werden. Dabei ist es aus Sicherheitsgründen jedoch zwingend, daß eine mögliche Verfälschung und/oder ein Verlust der Informationen erkannt wird.It is known that data transmitted between control units in a vehicle through an unsecured transmission medium become. For security reasons, however, it is imperative that a possible falsification and / or a loss of information is detected.
Aus der
Der Erfindung liegt daher das technische Problem zugrunde, Verfahren und eine Vorrichtung zur Übertragung von Daten zwischen mindestens zwei Steuereinheiten in einem Fahrzeug schaffen, durch das auch sicherheitskritische Funktionen über ein nicht abgesichertes Medium übertragbar sind.The invention therefore has the technical problem based, method and an apparatus for transmitting data between create at least two control units in a vehicle that also safety-critical functions over an unsecured Medium transferable are.
Die Lösung des Problems ergibt sich durch die Gegenstände mit den Merkmalen der Ansprüche 1 und 5. Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.The solution to the problem arises through the objects with the features of claims 1 and 5. Further advantageous embodiments of the invention result itself from the subclaims.
Eine erste Steuereinheit erstellt einen verschlüsselten Datensatz aus mindestens einen Teil der zu übertragenden Daten, wobei die zweite Steuereinheit mindestens einen Schlüssel für die Erstellung des verschlüsselten Datensatzes an die erste Steuereinheit sendet und die erste Steuereinheit mindestens den verschlüsselten Datensatz an die zweite Steuereinheit sendet. Die zweite Steuereinheit empfängt den verschlüsselten Datensatz und kann ihn mit Hilfe des vorliegenden Schlüssels dekodieren. Paßt der empfangene Datensatz nicht zu dem Schlüssel, so liegt ein Fehler vor. An der ersten Steuereinheit wird keine Dekodierung durchgeführt. Eine Kodierung mit dem vorgegeben Schlüssel ist durch eine Schaltung ohne eigene Intelligenz durchführbar.A first control unit is created an encrypted Record of at least part of the data to be transmitted, the second control unit at least one key for creating the encrypted Sends data record to the first control unit and the first control unit at least the encrypted one Sends data record to the second control unit. The second control unit receives the encrypted Record and can decode it using the given key. Does it fit received data record for the key, there is an error. No decoding is carried out on the first control unit. A Coding with the given key is through a circuit feasible without your own intelligence.
In einer bevorzugten Ausführungsform sendet die erste Steuereinheit den verschlüsselten Datensatz und einen zweiten unverschlüsselten Datensatz, umfassend mindestens einen Teil der zu übertragenden Daten, an die zweite Steuereinheit, und die zweite Steuereinheit vergleicht die Datensätze. Die empfangende Steuereinheit kennt und erkennt den zur Erstellung des verschlüsselten Datensatzes verwendeten Schlüssel und kann daher die empfangenen Daten einfach und schnell auf Unversehrtheit überprüfen. Andere Steuereinheiten sind in der Lage die Daten ebenfalls zu lesen und gegebenenfalls auch auszuwerten, wenn sie den verwendeten Schlüssel kennen. Eine Schlüsselvergabe erfolgt jedoch ausschließlich durch zweite Steuereinheit, so daß keine Manipulation möglich ist.In a preferred embodiment the first control unit sends the encrypted data record and one second unencrypted Data set comprising at least part of the data to be transmitted Data to the second control unit and the second control unit compares the records. The receiving control unit knows and recognizes that for the creation of the encrypted Record used key and can therefore easily and quickly check the received data for integrity. Other Control units are also able to read the data and If necessary, also evaluate if you know the key used. A key assignment however, is done exclusively by a second control unit so that no manipulation is possible.
In einer bevorzugten Ausführungsform sendet die zweite Steuereinheit eine Vielzahl unterschiedlicher Schlüssel in einer definierten Reihenfolge. Der ersten Steuereinheit ist die Reihenfolge der vorgegebenen Schlüssel bekannt. Die erste Steuereinheit erkennt daher an einem zeitlichen Verzug, ob Daten verloren gingen oder verfälscht wurden.In a preferred embodiment the second control unit sends a multitude of different ones key in a defined order. The first control unit is the Order of the given keys is known. The first control unit therefore recognizes from a time delay whether data has been lost or falsified were.
In einer weiteren Ausführungsform ist mindestens eine Steuereinheit mit einer Geschwindigkeitsregelanlage (GRA) wirkverbunden ist. An der Übertragung eines GRA Schalterzustandes können eine Vielzahl an Steuereinheiten und Datenleitungen beteiligt sein. Die Auswertung des GRA Schalters ist daher sehr aufwendig. Durch den Vergleich der Datensätze kann die empfangende Steuereinheit eine aufgetretenen Fehler in der Kommunikation sofort erkennen und in einen sicheren Zustand übergehen.In another embodiment is at least one control unit with a cruise control system (GRA) is connected. At the transfer a GRA switch state can be a Numerous control units and data lines are involved. The Evaluation of the GRA switch is therefore very complex. By the Comparison of records the receiving control unit can report an error that has occurred recognize communication immediately and change to a safe state.
Eine weitere bevorzugte Ausführungsform ist der Gang-Wahlhebelschalter.Another preferred embodiment is the gear selector switch.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Die Figuren zeigen:The invention is described below of a preferred embodiment explained in more detail. The Figures show:
Sendet das Motorsteuergerät eine Vielzahl von Schlüsseln in einer ihm bekannten Reihenfolge, so müssen diese zu gleichen Aussagen über den Zustand des GRA-Schalters S führen, bzw. einen Zustandswechsel eindeutig durch eine Folge von entsprechenden Informationen signalisieren. Ist dies nicht der Fall, so liegt ein Fehler in der Übertragung vor und/oder die Daten wurden manipuliert.The engine control unit sends a variety of keys in a sequence known to him, they must make the same statements about the The state of the GRA switch S, or a change of state clearly through a sequence of corresponding ones Signal information. If this is not the case, then a Transmission errors before and / or the data has been manipulated.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE2002137698 DE10237698A1 (en) | 2002-08-15 | 2002-08-15 | Data-transmission method for transferring data between control units in a motor vehicle, uses control units to prepare and exchange encoded data records for vehicle functions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002137698 DE10237698A1 (en) | 2002-08-15 | 2002-08-15 | Data-transmission method for transferring data between control units in a motor vehicle, uses control units to prepare and exchange encoded data records for vehicle functions |
Publications (1)
Publication Number | Publication Date |
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DE10237698A1 true DE10237698A1 (en) | 2004-02-26 |
Family
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Family Applications (1)
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DE2002137698 Withdrawn DE10237698A1 (en) | 2002-08-15 | 2002-08-15 | Data-transmission method for transferring data between control units in a motor vehicle, uses control units to prepare and exchange encoded data records for vehicle functions |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007036124A1 (en) * | 2007-08-01 | 2009-02-05 | Conti Temic Microelectronic Gmbh | Vehicle, has electronic system with dynamic structure executing two functions of two different functional units at different times, where structure represents that two functions are alternatively executed in operation period of system |
EP2194257A1 (en) * | 2008-12-05 | 2010-06-09 | Delphi Technologies Holding S.à.r.l. | A method of controlling a vehicle engine system |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19606552A1 (en) * | 1996-02-22 | 1997-08-28 | Bosch Gmbh Robert | Method for providing data of a vehicle device |
DE19610161C2 (en) * | 1996-03-15 | 1998-01-22 | Mannesmann Vdo Ag | Data transmission device in a vehicle, consisting of a pulse generator and a control device, and pulse generator for the control device |
DE19652256A1 (en) * | 1996-12-16 | 1998-06-18 | Bosch Gmbh Robert | Procedure for securing data transmission |
DE19747827A1 (en) * | 1997-02-03 | 1998-09-17 | Mannesmann Ag | Method and device for inserting a service key into a terminal |
DE19810159A1 (en) * | 1997-03-04 | 1998-10-01 | Mannesmann Ag | Method of inserting service key into terminal |
DE19728841C2 (en) * | 1997-07-05 | 2000-07-20 | Bosch Gmbh Robert | Method and device for monitoring data transmission in a motor vehicle |
DE19922946A1 (en) * | 1999-05-14 | 2000-11-23 | Daimler Chrysler Ag | Applying authentication data to hardware unit, e.g. chip card having private key by encrypting data using public key and transmitting to hardware unit |
DE10008974A1 (en) * | 2000-02-25 | 2001-09-06 | Bayerische Motoren Werke Ag | Signature process |
DE10008973A1 (en) * | 2000-02-25 | 2001-09-06 | Bayerische Motoren Werke Ag | Authorization procedure with certificate |
-
2002
- 2002-08-15 DE DE2002137698 patent/DE10237698A1/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19606552A1 (en) * | 1996-02-22 | 1997-08-28 | Bosch Gmbh Robert | Method for providing data of a vehicle device |
DE19610161C2 (en) * | 1996-03-15 | 1998-01-22 | Mannesmann Vdo Ag | Data transmission device in a vehicle, consisting of a pulse generator and a control device, and pulse generator for the control device |
DE19652256A1 (en) * | 1996-12-16 | 1998-06-18 | Bosch Gmbh Robert | Procedure for securing data transmission |
DE19747827A1 (en) * | 1997-02-03 | 1998-09-17 | Mannesmann Ag | Method and device for inserting a service key into a terminal |
DE19810159A1 (en) * | 1997-03-04 | 1998-10-01 | Mannesmann Ag | Method of inserting service key into terminal |
DE19728841C2 (en) * | 1997-07-05 | 2000-07-20 | Bosch Gmbh Robert | Method and device for monitoring data transmission in a motor vehicle |
DE19922946A1 (en) * | 1999-05-14 | 2000-11-23 | Daimler Chrysler Ag | Applying authentication data to hardware unit, e.g. chip card having private key by encrypting data using public key and transmitting to hardware unit |
DE10008974A1 (en) * | 2000-02-25 | 2001-09-06 | Bayerische Motoren Werke Ag | Signature process |
DE10008973A1 (en) * | 2000-02-25 | 2001-09-06 | Bayerische Motoren Werke Ag | Authorization procedure with certificate |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007036124A1 (en) * | 2007-08-01 | 2009-02-05 | Conti Temic Microelectronic Gmbh | Vehicle, has electronic system with dynamic structure executing two functions of two different functional units at different times, where structure represents that two functions are alternatively executed in operation period of system |
EP2194257A1 (en) * | 2008-12-05 | 2010-06-09 | Delphi Technologies Holding S.à.r.l. | A method of controlling a vehicle engine system |
WO2010063642A1 (en) * | 2008-12-05 | 2010-06-10 | Delphi Technologies, Inc. | A method of controlling a vehicle engine system |
US9127610B2 (en) | 2008-12-05 | 2015-09-08 | Delphi International Operations Luxembourg S.A.R.L. | Method of controlling a vehicle engine system |
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8125 | Change of the main classification |
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Effective date: 20120310 |
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