EP1815256B1 - Unité de tachygraphe électronique pour véhicule automobile - Google Patents

Unité de tachygraphe électronique pour véhicule automobile Download PDF

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Publication number
EP1815256B1
EP1815256B1 EP05818272A EP05818272A EP1815256B1 EP 1815256 B1 EP1815256 B1 EP 1815256B1 EP 05818272 A EP05818272 A EP 05818272A EP 05818272 A EP05818272 A EP 05818272A EP 1815256 B1 EP1815256 B1 EP 1815256B1
Authority
EP
European Patent Office
Prior art keywords
unit
data
card
called
tachographic
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.)
Revoked
Application number
EP05818272A
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German (de)
English (en)
French (fr)
Other versions
EP1815256A1 (fr
Inventor
Laurent Malberti
Eric Romon
Jacques Kunegel
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.)
Actia Automotive SA
Original Assignee
Actia Automotive SA
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34951974&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1815256(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Actia Automotive SA filed Critical Actia Automotive SA
Priority to PL05818272T priority Critical patent/PL1815256T3/pl
Publication of EP1815256A1 publication Critical patent/EP1815256A1/fr
Application granted granted Critical
Publication of EP1815256B1 publication Critical patent/EP1815256B1/fr
Anticipated expiration legal-status Critical
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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
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data
    • G07C5/085—Registering performance data using electronic data carriers
    • G07C5/0858—Registering performance data using electronic data carriers wherein the data carrier is removable
    • 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
    • G07C7/00—Details or accessories common to the registering or indicating apparatus of groups G07C3/00 and G07C5/00

Definitions

  • the invention relates to a unit of a so-called tachograph control device intended to be loaded onto a motor vehicle-in particular a vehicle for transporting goods or passengers-in order to enable the control of the activities of a driver of the vehicle.
  • driver designates a person who can in turn exercise the activities of driver or co-driver (also called “conveyor") of the vehicle.
  • the tachograph comprises, in addition to this unit, at least one vehicle motion sensor, connected to the unit when the latter is on board.
  • a tachograph has the particular function of recording, storing, producing, printing, and possibly exchanging and displaying, data, called driver data, relating to the activities of a driver of the vehicle, with a view to allow control of these activities by a controller.
  • the tachographs currently used in Europe are of the tachograph type with graphic discs, such as that described by US 4,782,691 . These are analog and mechanical instruments for retranscribing conductive data on a paper disk by means of a stylus.
  • a tachograph unit already has, for this purpose, mechanical protections (reinforced housing possibly equipped with security seals ).
  • the implementation of electronic components - including microprocessor circuit (s) and smart card reader (s) - in the tachograph unit now makes it possible to envisage the implementation of electronic protections within the unit, such as cryptographic security mechanisms.
  • the tachograph unit must keep cryptographic secrets (private or secret encryption keys, for encryption and decryption) and integrate corresponding encryption algorithms.
  • the object of the invention is to provide a secure tachograph unit, not only endowed with such cryptographic algorithms and secrets, but also and above all with enhanced electronic protection capable of offering a high level of resistance to fraudulent attacks.
  • the aim is not only to offer control and limitation of access to data managed by the unit, read and / or write, but also and above all to ensure compliance with this limitation by detecting any falsification of these data.
  • An object of the invention is to provide a unit able to strongly resist an attack conducted using sophisticated means, whether means implemented directly on the circuits of the unit or remotely.
  • the object of the invention is in particular to provide a unit offering a level of security rated E3 FORT according to the ITSEC evaluation methodology.
  • Another object of the invention is to provide a more efficient electronic tachograph unit also in terms of functionality.
  • the invention aims to achieve the aforementioned objectives at lower cost, by proposing a tachograph unit low cost.
  • the invention aims to provide a tachograph unit that fulfills these objectives from means, including electronic components, customary and inexpensive, or possibly new but inexpensive development and manufacturing.
  • the invention relates to a tachograph unit intended to be on board a motor vehicle and to be connected to at least one vehicle motion sensor, which unit comprises at least one microprocessor card (s), said main board, for processing and storing data, called tachograph data, comprising at least data, called conductive data, relating to activities of a driver of said vehicle.
  • the tachograph unit is also adapted to perform operations, said security operations, implementing encryption algorithms for the purpose of authentication of at least a portion of the tachograph data.
  • security data refers to additional data stored and / or created and / or calculated and / or used ... in the context of security operations.
  • the security data includes encryption keys, certificates issued by authorized official bodies, security attributes generated by a security operation for a data transmission, such as a signature, a checksum -dite checksum -...
  • Some of these data, called secret data are by definition secret: stored in the tachograph unit, they must remain inaccessible to any unauthorized person (the tachograph unit must offer a high level of resistance to attacks to obtain this secret data); it is essentially secret -symmetric encryption keys and private encryption keys.
  • CSP circuit (s) can be carried by the main card or by one or more other card (s).
  • the invention consists in selecting and separating from all the operations implemented by a tachograph unit, at least part of the operations relating solely to security (operations consisting in authenticating and / or protecting certain data by means of encryption algorithms, with the ultimate aim of guaranteeing the authenticity and integrity of the driver data), and to execute the selected security operations by a specific, physically protected circuit.
  • this protected circuit are stored secret security data. It can also store encryption algorithms and / or non-secret security data (such as public keys) relating to the security operations allocated to said CSP circuit.
  • the (s) circuit (s) CSP is (are) dedicated (s) essentially to the realization of security operations, the term "essentially” meaning that each circuit CSP is dedicated to operations of security and possibly to specific operations requiring a low capacity of processing and storage, such as the storage of temporary data generated by the processing of tachograph data.
  • a cryptographic service provider circuit that is customary and inexpensive, having a low processing and storage capacity, can thus be used as a CSP circuit according to the invention, given that it is "discharged" from the functionalities of tachograph unit that require more capacity.
  • the (s) circuit (s) CSP is (are) dedicated (s) essentially to the realization of all security operations. Therefore, the main microprocessor (s) does not perform any security operation. It is therefore possible to use, as main microprocessor, a basic microprocessor, unprotected and therefore inexpensive, such as, for example, a computer usually used in the automotive field. Such a conventional computer has sufficient processing and storage capacity to handle all the tasks (excluding security operations) assigned to the tachograph unit.
  • the tachograph unit comprises a single CSP circuit, essentially dedicated to all security operations.
  • the main card of the tachograph unit comprises at least one memory, called application memory, associated with a main microprocessor, in which is stored an application (one or more programs), called tachograph application , which can be loaded into this main microprocessor for processing tachograph data.
  • this microprocessor main is adapted to verify the authenticity and integrity of at least a portion of the tachograph application using at least one security operation performed by a CSP circuit of the tachograph unit.
  • said main microprocessor integrates a protected start program, physically registered in the microprocessor and adapted for, during an operation to implement at least one of a tachograph application (first or new) in the unit, order audit CSP circuit executing at least one security operation for the purpose of authenticating said application or tachograph application part, and not controlling the registration of this application or tachograph application part in the application memory only if it is considered by the CSP circuit to be genuine and honest.
  • the startup program is hard-coded (in silicon) in the main microprocessor, it can not be modified. This guarantees the control by the main microprocessor and the execution by the CSP circuit of the aforementioned security operation (s).
  • the tachograph application finally stored in the application memory and used by the main microprocessor (s) is therefore necessarily authentic and integrated, that is to say, conceived and implemented by an authorized organization, in a secure environment, according to the specifications imposed by the rules and standards.
  • the tachograph application stored in the application memory is itself adapted to, when loaded into the main microprocessor for tachograph data processing, periodically control the associated CSP circuit 1. performing at least one security operation for its own authentication.
  • each CSP circuit is connected to a main microprocessor, said associated CSP and main microprocessor circuit being adapted to operate in a master / slave relationship in which the main microprocessor is the master and the CSP circuit is the slave .
  • the tachograph unit comprises a reader / writer device for smart cards, called tachograph cards, able to receive at least two tachograph cards in parallel.
  • the tachograph unit also comprises a connection interface, called a tachograph card interface, for wireless communication (and in particular at a distance) of the unit with a card reader / writer device.
  • a connection interface called a tachograph card interface
  • tachograph external to the unit (in its simplest version, this external device is adapted to receive only one tachograph card at a time).
  • each tachograph card belonging to one of these types: driver cards, controller cards, business cards and shop cards.
  • Each type of tachograph card opens right on the one hand to a restricted access to certain predetermined data stored in the unit, and on the other hand to the execution of certain predetermined operations according to the type of tachograph card.
  • the insertion of a tachograph card into the card reader / writer device (whether it is the device of the integrated device unit or an external device capable of communicating with the unit) makes it possible to open an operating session of the unit corresponding to the type of card inserted.
  • any tachograph card inserted in the card reader / writer device must be able to be authenticated, as well as the data exchanged between the tachograph card and the tachograph unit.
  • the reader / recorder device is controlled by at least one main microprocessor of the unit, which is associated with a CSP circuit.
  • This main microprocessor (or possibly these main microprocessors) is adapted to control said circuit CSP performing security operations for the mutual authentication of the unit and a tachograph card present in the reader / writer device (integrated or external), and not allowing the opening of a corresponding operating session only if the unit and the tachograph card are considered authentic.
  • An authenticated driver card thus gives access to a session of operation called driver session; an authenticated workshop card gives access to an operating session called a workshop session; an authenticated controller card provides access to a session of operation known as a controller session; an authenticated corporate card gives access to a session of operation called business session.
  • This mutual authentication between tachograph card and unit is preferably performed as soon as a card is inserted into the card reader / writer device (especially with regard to the integrated device).
  • the main microprocessor is adapted to monitor card insertions and withdrawals in the reader / writer device and to trigger the aforementioned security operations as soon as an insertion of a tachograph card into the reader / writer device is detected.
  • Opening an operating session allows operations to be performed, the nature of which depends on the type of the session. Some of these operations may lead to data exchanges between tachograph card and unit.
  • the main microprocessor is adapted to control the circuit CSP execution of at least a security operation to authenticate said data, and to process the exchanged data only if they are considered to be authentic and honest.
  • the tachograph unit must also be able to authenticate the motion sensor with which it communicates when it is on board a vehicle, as well as the data, called motion data, that it receives from said sensor. Note that the movement data are tachograph data.
  • the tachograph unit For its connection to the motion sensor, the tachograph unit comprises a connection interface, called sensor interface.
  • this connection is preferably wired, in which case the sensor interface consists of one or more connector (s). But it is not excluded that this connection is wireless and that the sensor interface comprises (possibly in combination with a connector) an emitter-receiver device of electromagnetic waves.
  • the main board of the unit comprises at least one main microprocessor connected to said sensor interface and which is associated with a CSP circuit, said main microprocessor being adapted to control said execution of the CSP circuit.
  • the pairing operation can be implemented only if an authentic and authenticated workshop tachograph card is present in the unit reader / recorder integrated in the unit.
  • the main microprocessor (s) of the unit is (are) adapted to allow the execution of a pairing operation only in the context of a workshop session (which can only be opened by authentication of a workshop card).
  • the tachograph unit also comprises a connection interface, called the unloading interface, for the communication of the unit with an external device called unloading device, in particular able to store tachograph data.
  • the unloading interface may include a connector, for wired connection of the unloader with the unit, and / or an emitter / receiver for electromagnetic waves, for wireless communication between the unit and an optionally remote unloading device.
  • a data unloading operation can be implemented, on the order of a user, only if a tachograph card of a controller, a workshop or an enterprise (excluding a driver) authentic and authenticated is present in the device reader / chart recorder (integrated or external).
  • the main microprocessor (s) is (are) adapted to allow the execution of a data unloading operation to an unloading device "connected" to the unit (wired or wireless connection) via the unload interface, only in the context of a controller or workshop or enterprise session (opened by the authentication of a corresponding card).
  • the downloaded tachograph data are accompanied by a security attribute, such as an electronic signature, for subsequent authentication by the unloading device or by another tool.
  • the main microprocessor is also adapted for, in the context of a data unloading operation, commanding the circuit CSP the execution of at least one security operation for the protection of the data to be unloaded.
  • the unit also advantageously comprises a connection interface, called a calibration interface, comprising at least one connector, for the communication of the unit with an external device called calibration device, for the purpose of calibrating unit.
  • a calibration operation can not be implemented, on the control of a user, by means of a calibration device connected to the unit via the calibration interface, only if an authentic and authenticated workshop tachograph card is present in the card reader / writer device integrated into the unit.
  • the main microprocessor (s) is (are) adapted to allow the execution of a calibration operation only in the context of a workshop session ( opened by the authentication of a workshop card).
  • calibration data are transmitted to the unit by the calibration device.
  • the data calibration stored in the unit at the end of the calibration operation are tachograph data.
  • a main microprocessor of the unit is adapted to monitor card insertions and withdrawals in the card reader / writer device (integrated or external) and, as soon as a withdrawal of a tachograph card of the reader / writer device is detected, interrupt any operation in progress in the corresponding operating session.
  • the operations are interrupted during sensor matching, updating the tachograph application, calibration, tachograph data unloading and of course read / write on the tachograph card (which does not is more connected ).
  • the invention also relates to a tachograph unit characterized in combination by all or some of the features mentioned above and below.
  • the invention extends to a motor vehicle equipped with such a tachograph unit.
  • the tachograph comprises a vehicle motion sensor, connecting cables for connecting the motion sensor and the sensor connector 12 of the onboard unit.
  • the motion sensor is formed in particular by a motion detection element, a microprocessor (to which the detection element is connected) and a connector for connecting the microprocessor of the sensor to the onboard unit.
  • the security operations for the mutual authentication of the unit and a tachograph card preferably implement encryption calculations by means of asymmetric keys (private and public keys). .
  • the main microprocessor 4 is indeed adapted to identify card insertions and withdrawals according to the signals it receives from the detection device (s) of said reader device / recorder: the presence of a card 60 in the read / write position - reception of a detection signal - after a period of absence of a card - no detection signal - translates the insertion of a card; the absence of a card following a period of card presence reflects the withdrawal of a card.
  • mutual authentication of a tachograph card present in the reader / writer device is also triggered periodically (while no card withdrawal has been noted since the authentication precedence) by the main microprocessor 4 and / or by the tachograph card.
  • the security operations for the authentication of data exchanged between the unit and the motion sensor or between the unit and a tachograph card preferably implement encryption calculations using session keys, that is, symmetric keys (secret keys).
  • session keys that is, symmetric keys (secret keys).
  • the session keys are stored in the (protected) memory of the CSP circuit 20.
  • the reading of tachograph data on a previously authenticated tachograph card gives rise to the operations illustrated in FIG. figure 3 , which make it possible to guarantee the integrity of the data read (these operations are intended to verify that the data received by the main microprocessor 4 correspond to those sent by the tachograph card and that the latter were therefore not falsified during the transmission).
  • the main microprocessor 4 prepares the read command (step 30): the control code is provided with data, called ancillary data, necessary for its execution, such as the address and the length of the tachograph data to be read (with a view to their location in the memory of the tachograph card).
  • step 31 It transmits (step 31) the data annexed to the circuit CSP 20, with a command to execute a corresponding security operation, in order to protect the integrity of said data.
  • the circuit CSP 20 calculates (step 32) a checksum, called checksum, of the ancillary data, encrypts said checksum by means of its session key and transmits (step 33) the encrypted checksum to the main microprocessor 4.
  • the microprocessor main 4 prepares (step 34) and transmits (step 35) the entire read command (command code + ancillary data + checksum) to the tachograph card 60 (i.e., to its electronic chip 61) via the connector of the reader / writer device 8.
  • the tachograph card 60, 61 checks the integrity of the data received (step 36) by decrypting the checksum received by means of its session key, calculating the checksum of the received ancillary data and comparing both values. If the latter coincide, the tachograph card 60, 61 transmits (step 38) the requested tachograph data, after having previously calculated and encrypted - by means of its session key - their checksum (step 37). Upon receipt of the data (step 39), the main microprocessor 4 transmits (step 40) to the CSP circuit 20 the tachograph data and the encrypted checksum received, as well as a command to execute a corresponding security operation to check the integrity of tachograph data received.
  • the CSP circuit 20 calculates the checksum tachograph data and decrypts the encrypted checksum that accompanies them by means of its session key and compares the two values obtained (step 41). If they coincide, it sends a signal of agreement to the main microprocessor 4; otherwise, it transmits to the latter a signal of disagreement (step 42).
  • the main microprocessor 4 only operates the tachograph data if the received signal is a tuning signal (step 43). If the tachograph data are not considered authentic (disagreement signal), the microprocessor stores the anomaly and possibly emits a signal corresponding to the attention of the user (step 43).
  • Motion data received from the motion sensor is also subject to security operations for authentication.
  • the motion sensor previously authenticated in the context of a pairing operation with the unit, continuously transmits pulses that it transmits to the unit, each pulse being transmitted at the instant when a predetermined distance has been traveled by the vehicle since the previous impulse.
  • the motion sensor also has a counter, which it increments with each pulse emitted.
  • the main microprocessor of the unit has a counter, which it increments with each pulse received. Periodically, the main microprocessor triggers a secure operation to compare the sensor and unit counters.
  • the reading of the sensor counter is performed, for example, as previously explained with regard to the reading of tachograph data in a tachograph card: the value of the sensor counter transmitted to the unit is in particular authenticated by a security attribute of type encrypted checksum.
  • a relative value of the sensor counter and a relative value of the unit counter are calculated by the main microprocessor and then compared. This procedure verifies the authenticity and integrity of the data (pulses) transmitted by the sensor during the period since the last comparison operation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
EP05818272A 2004-11-22 2005-11-22 Unité de tachygraphe électronique pour véhicule automobile Revoked EP1815256B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05818272T PL1815256T3 (pl) 2004-11-22 2005-11-22 Jednostka tachografu elektronicznego dla pojazdu samochodowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0412379A FR2878355B1 (fr) 2004-11-22 2004-11-22 Unite de tachigraphe electronique pour vehicule automobile
PCT/FR2005/002893 WO2006053998A1 (fr) 2004-11-22 2005-11-22 Unite de tachygraphe electronique pour véhicule automobile

Publications (2)

Publication Number Publication Date
EP1815256A1 EP1815256A1 (fr) 2007-08-08
EP1815256B1 true EP1815256B1 (fr) 2013-01-02

Family

ID=34951974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05818272A Revoked EP1815256B1 (fr) 2004-11-22 2005-11-22 Unité de tachygraphe électronique pour véhicule automobile

Country Status (6)

Country Link
EP (1) EP1815256B1 (pl)
BR (1) BRPI0517699A (pl)
ES (1) ES2401592T3 (pl)
FR (1) FR2878355B1 (pl)
PL (1) PL1815256T3 (pl)
WO (1) WO2006053998A1 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013214798A1 (de) 2013-07-29 2015-01-29 Continental Automotive Gmbh Tachografenanordnung und Verfahren zum Betreiben einer Tachografenanordnung
EP4019979A3 (de) * 2020-12-23 2022-08-10 Continental Automotive Technologies GmbH Tachographensystem für ein kraftfahrzeug, kraftfahrzeug und verfahren zum betreiben eines tachographensystems

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007058163A1 (de) 2007-09-28 2009-04-23 Continental Automotive Gmbh Tachograph, Maut-On-Board-Unit, Anzeigeinstrument und System
DE102009051350A1 (de) 2009-10-30 2011-05-05 Continental Automotive Gmbh Verfahren zum Betreiben eines Tachographen und Tachograph
EP2362357B1 (en) 2010-02-22 2020-02-12 Stoneridge Electronics AB Enhanced functions of a tachograph
EP2369555B1 (en) 2010-02-22 2014-07-02 Stoneridge Electronics AB Temporary download
BE1020818A3 (fr) * 2012-07-05 2014-05-06 Hennekinne Yves Systeme de cartes a puces pour automobile.
RU209414U1 (ru) * 2021-12-02 2022-03-16 Общество с ограниченной ответственностью "НОВЫЕ РЕШЕНИЯ ДРАЙВА" Цифровой тахограф

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3505068C1 (de) * 1985-02-14 1986-06-19 Mannesmann Kienzle GmbH, 7730 Villingen-Schwenningen Fahrtschreiber fuer Kraftfahrzeuge
GB9220875D0 (en) * 1992-10-05 1992-11-18 Matra Marconi Space Uk Ltd A tachograph
US5497419A (en) * 1994-04-19 1996-03-05 Prima Facie, Inc. Method and apparatus for recording sensor data
US6556905B1 (en) * 2000-08-31 2003-04-29 Lisa M. Mittelsteadt Vehicle supervision and monitoring
AU2002211692A1 (en) * 2000-10-12 2002-04-22 Southwest Research Institute Method and apparatus for personnel transportable data recording

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013214798A1 (de) 2013-07-29 2015-01-29 Continental Automotive Gmbh Tachografenanordnung und Verfahren zum Betreiben einer Tachografenanordnung
EP4019979A3 (de) * 2020-12-23 2022-08-10 Continental Automotive Technologies GmbH Tachographensystem für ein kraftfahrzeug, kraftfahrzeug und verfahren zum betreiben eines tachographensystems
EP4212884A1 (de) * 2020-12-23 2023-07-19 Continental Automotive Technologies GmbH Tachographensystem für ein kraftfahrzeug, kraftfahrzeug und verfahren zum betreiben eines tachographensystems

Also Published As

Publication number Publication date
ES2401592T3 (es) 2013-04-22
FR2878355B1 (fr) 2007-02-23
EP1815256A1 (fr) 2007-08-08
WO2006053998A1 (fr) 2006-05-26
BRPI0517699A (pt) 2008-10-14
FR2878355A1 (fr) 2006-05-26
PL1815256T3 (pl) 2013-06-28

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