EP3120518A1 - Control device in a motor vehicle, a motor vehicle, and a method for operating a control device - Google Patents
Control device in a motor vehicle, a motor vehicle, and a method for operating a control deviceInfo
- Publication number
- EP3120518A1 EP3120518A1 EP15705196.2A EP15705196A EP3120518A1 EP 3120518 A1 EP3120518 A1 EP 3120518A1 EP 15705196 A EP15705196 A EP 15705196A EP 3120518 A1 EP3120518 A1 EP 3120518A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control device
- processor core
- processor
- communication
- motor vehicle
- 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- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
- G06F13/28—Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/16—Handling requests for interconnection or transfer for access to memory bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/16—Handling requests for interconnection or transfer for access to memory bus
- G06F13/1668—Details of memory controller
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
- G06F15/163—Interprocessor communication
- G06F15/167—Interprocessor communication using a common memory, e.g. mailbox
-
- 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
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
- G06F21/74—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information operating in dual or compartmented mode, i.e. at least one secure mode
-
- 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
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/85—Protecting input, output or interconnection devices interconnection devices, e.g. bus-connected or in-line devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/544—Buffers; Shared memory; Pipes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0209—Architectural arrangements, e.g. perimeter networks or demilitarized zones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
- H04W12/088—Access security using filters or firewalls
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Definitions
- the invention relates to a control unit in a motor vehicle, having a communication device for wireless communication in a network having at least one vehicle-external device, a motor vehicle and a method for operating a control device in a motor vehicle.
- connection to the Internet is usually made via a mobile network.
- a special control device which may for example be referred to as "Online Connectivity Unit” (OCU).
- OCU Online Connectivity Unit
- a communication device may be present, which may be implemented, for example, as a telephone module with an antenna and corresponding electronics.
- Such communication modules are frequently also referred to as "Network Access Devices” (NAD)
- NAD Network Access Devices
- a connection to other vehicle systems starting from the control unit is realized via a bus system of the motor vehicle, modern motor vehicles frequently having a plurality of vehicle buses (bus systems) Connection to one of these bus systems in order to be able to transmit data received from the network to other vehicle systems or from receive this data directed to the network and forward it to the communication device.
- connection to external networks especially the Internet
- there is also a risk of attacks on the electronics and software level for example for hacking and / or jamming attacks.
- the connection to the network via the control unit and the vehicle bus is already a hurdle for potential attackers available, while still increasing the security is always desired.
- the invention is therefore based on the object to provide an embodiment of a control device, in which an increased security against attacks from an external network, in particular the Internet, is given.
- a computing device of the control device comprises at least two processor cores, data being exchanged between the communication device and a first processor core exclusively via a second of the processor cores.
- a processor core which is dedicated exclusively to the data exchange between at least one further processor core and the communication device.
- the first processor core can thus exchange data with at least one bus system of the motor vehicle and / or at least one further one to be fulfilled by the control unit
- a dedicated control For example, as one of the already mentioned "Online Connectivity Units", the security aspect is more relevant if the control unit is also to fulfill further functions in the motor vehicle, to which an unauthorized external access, ie through the external network , should be avoided if possible.
- control device is a network control device with a connection device to a plurality of, in particular all, provided for communication between different vehicle systems bus systems and the first processor core for controlling the exchange of data between the bus systems and between the bus systems and the network is formed.
- Such network control devices which are often also referred to as "gateways", are already known, since motor vehicles frequently have a plurality of bus systems and certain data must be present in a plurality of these bus systems It is also envisaged to integrate the access to the external network into the network control device so that all data exchange can be regulated in a single location, but higher safety requirements are also conceivable, since the network control device can access all bus systems of the motor vehicle has a central position, which should not be corrupted, and the provision of the second core of the processor especially intended for connection to the external network proves to be particularly expedient since an outstanding security cond is given.
- the at least one first processor core after expediently vulnerable parts of the software are encapsulated on the second processor core.
- the network control unit and the connection to the external network for example, that a connection to preferably all vehicle buses is present and therefore data from the network can be given directly to the destination bus system. It is therefore given a broadband connection. If a special, only to a single bus system, such as a CAN bus, connected control unit used all the traffic would have to run to and from the external network on this one bus system, which would be too busy, after most bus systems in their bandwidth are limited.
- processor cores are part of a multi-core processor.
- multi-core processors are already known in the prior art and provide the basic hardware structure that allows individual processor cores to assign certain safety-related functions and to largely seal them off.
- a so-called dual-core processor can be used.
- a demilitarized zone can be created by the second processor core.
- the demilitarized zones are already known in the prior art and represent a kind of buffering region provided for security reasons, whose corruption from the outside is uncritical, since only clearly defined accesses to the actual system, realized by the at least one first processor core, are given to their realization will be discussed in more detail below.
- the second processor core can also be thought of as a kind of "firewall" that protects the actual vehicle systems from the external network, in particular the Internet.
- the computing device has a memory device, wherein an exclusively addressable by the second processor core memory area for communication between the first and the second processor core is provided.
- a shared memory is used to facilitate communication between the first and second processor cores, and the use of multi-core processors in the computing device is particularly advantageous since the basis for the corresponding functionality already exists there
- Multi-core processors usually have a memory device (RAM) that can be used in principle by all processor cores of the multi-core processor and is managed by a control unit, thus making it possible for a specific memory area of the memory device to be addressed only by the second processor core
- the second processor core also does not receive any access to storage areas of the storage device other than the shared storage area In this way, the data exchange between the processor cores can take place in a defined manner.
- the computing device can therefore comprise, in particular as part of a multi-core processor, a control unit designed to control the access to the memory device, which can be configured in particular exclusively via the first processor core.
- control units are also known under the name "Memory Protection Unit” (MPU)
- MPU Memory Protection Unit
- a configuration is preferably permitted only via the first processor core, so that even with a compromised second processor core its access rights can not be expanded.
- the processor cores are designed for communication through the shared memory area via input / output buffers.
- the corresponding data objects / data packets, which are stored in the input / output buffer, are expediently of a specific, the safety-friendly format and may possibly be checked by the first processor core or a special software module provided there.
- the input / output buffer is therefore the only, clearly defined interface over which the ideally already processed data can be received from the external network or forwarded to it, so that an extremely high level of security is provided.
- the second processor core is preferably designed to carry out at least one security check and / or to enhance the security of the format conversion of the data received by the communication device.
- verification and format conversion can occur within the second processor core, further increasing the overall security of the system and further exploiting the capabilities of the second processor core.
- the communication device and the computing device are of course connected via a communication connection, which can be realized, for example, as an SPI connection or a USB connection between the second processor core and the communication device.
- the communication device can expediently be a WLAN interface and / or an interface to a mobile radio network, in particular with the intention of establishing a connection to the Internet.
- the invention also relates to a motor vehicle having a control unit according to the invention. All embodiments with respect to the control device according to the invention can be analogously transferred to the motor vehicle according to the invention, with which therefore the same advantages can be obtained.
- the invention also relates to a method for operating a control device in a motor vehicle, comprising a communication device for wireless communication in a at least one vehicle-external device having network and a computing device having at least two processor cores, wherein for data exchange between the communication device and a first processor core exclusively a second the processor cores is used.
- the statements relating to the control device can be transferred analogously, so that the method according to the invention also allows access to the stated advantages. In particular, it may therefore be a method for operating a control device according to the invention. '
- Fig. 1 is a schematic diagram of a control device according to the invention.
- Fig. 2 shows an inventive motor vehicle.
- control device 1 shows a schematic diagram of a control device 1 according to the invention.
- this is a network control device (gateway), which consequently has a connection device 3 on the housing 2 to various bus systems 4 of the motor vehicle in which the control device 1 is installed.
- the control unit 1 has as computing means 5 a multi-core processor 6, here a dual-core processor with two processor cores 7, 8.
- a communication device 9 is provided, specifically a telephone module 10 (often referred to as NAD - Network Access Device).
- a suitable antenna 11 which is provided inside or outside of the control unit 1 may be, via a mobile network, a connection in an external network 12, here the Internet, are built.
- Trained as a network control unit controller 1 can therefore be referred to as "Connected Gateway”.
- a second processor core 8 of the multi-core processor 6 is exclusively used for transporting data from the communication device 9 to the first processor core 7 and vice versa.
- the first processor core is designed not only for controlling the exchange of data between the bus system, but also for controlling the exchange of data between the bus systems 4 and the network 12.
- the second processor core 8 thus forms a kind of protective barrier, wherein a demilitarized zone (DMZ) is concretely created by the second processor core 8.
- a demilitarized zone (DMZ) is concretely created by the second processor core 8.
- security checks and security enhancing format conversions of the data received from the communication device 9 are performed.
- the security is further enhanced by the fact that a clearly defined memory area 15 for data exchange between the first processor core 7 and the second processor core 8 is used in a memory device 14 of the multi-core processor 6.
- the second processor core 8 only has access to the memory area 15, not to the remaining address area of the memory device 14.
- a control unit 16 which acts as an MPU - Memory Protection Unit.
- the control unit 16 is configured so that it can be driven only by the first processor core 7, so that it is not possible to change on the part of the second processor core 8, this memory allocation.
- the data exchange via the memory area 15 takes place via input / output buffer, wherein a clearly predetermined, safety increasing Exchange format is given, which is characterized for example by certain packet sizes and the like.
- a communication connection which in the present case is implemented as an SPI connection 22, but can also be a USB connection.
- a first domain is the vehicle domain 17, which in the present case is designed for the routing between the bus systems 4 and from and to the network 12, with respect to the latter the data transport being clearly defined over the shared memory area 15, the second processor core 8 and the communication device 9 runs.
- the second processor core 8 forms the adaptation domain 18, in which data can be converted between different formats and security checks can be carried out.
- a demilitarized zone is created, which means that even if the second processor core 8 is corrupted, an attacker will not gain access to vehicle-relevant functions that would be performed in the first processor core 7, which would have a well-defined and possibly further extent only over the shared memory area 15 Performs security checks.
- the communication device 9 forms the vehicle-independent backend domain 19.
- FIG. 2 shows a motor vehicle 20 according to the invention in a schematic diagram.
- This comprises the control unit 1 as a network control device, which is connected to all vehicle buses 4 for communication with further, here only hinted vehicle systems 21.
- the bus systems 4 may be bus systems of various types, for example comprising CAN buses, Flexray buses and Ethernet buses. Via the antenna 1 and the communication device 9 as well as in the processor, a secure connection to the Internet is possible in the form of a demilitarized zone, so that externally arriving data is present at the hub for the vehicle buses 4.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014004004.6A DE102014004004A1 (en) | 2014-03-20 | 2014-03-20 | Control device in a motor vehicle, motor vehicle and method for operating a control device |
PCT/EP2015/000246 WO2015139799A1 (en) | 2014-03-20 | 2015-02-06 | Control device in a motor vehicle, a motor vehicle, and a method for operating a control device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3120518A1 true EP3120518A1 (en) | 2017-01-25 |
Family
ID=52484426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15705196.2A Withdrawn EP3120518A1 (en) | 2014-03-20 | 2015-02-06 | Control device in a motor vehicle, a motor vehicle, and a method for operating a control device |
Country Status (5)
Country | Link |
---|---|
US (1) | US9852093B2 (en) |
EP (1) | EP3120518A1 (en) |
CN (1) | CN106105144B (en) |
DE (1) | DE102014004004A1 (en) |
WO (1) | WO2015139799A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014003949A1 (en) * | 2014-03-20 | 2015-09-24 | Audi Ag | Network control device for a motor vehicle and motor vehicle |
DE102014004004A1 (en) | 2014-03-20 | 2015-09-24 | Audi Ag | Control device in a motor vehicle, motor vehicle and method for operating a control device |
US10055909B2 (en) | 2016-07-08 | 2018-08-21 | Calamp Corp. | Systems and methods for crash determination |
DE102017202022A1 (en) * | 2017-02-09 | 2018-08-09 | Audi Ag | Motor vehicle with an in-vehicle data network and method for operating the motor vehicle |
US20190141156A1 (en) | 2017-11-06 | 2019-05-09 | Calamp Corp. | Systems and Methods for Dynamic Telematics Messaging |
US11206171B2 (en) | 2017-11-07 | 2021-12-21 | Calamp Corp. | Systems and methods for dynamic device programming |
DE102017220371A1 (en) * | 2017-11-15 | 2019-05-16 | Siemens Mobility GmbH | System and method for sending and receiving data |
JP7042138B2 (en) | 2018-03-30 | 2022-03-25 | 日立Astemo株式会社 | Processing equipment |
CN113110407B (en) * | 2021-06-16 | 2021-09-10 | 奥特酷智能科技(南京)有限公司 | Automobile controller based on block gateway electric control unit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2013156315A1 (en) * | 2012-04-18 | 2013-10-24 | Schneider Electric Industries Sas | Method of secure management of a memory space for microcontroller |
Family Cites Families (12)
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US6732141B2 (en) * | 1996-11-29 | 2004-05-04 | Frampton Erroll Ellis | Commercial distributed processing by personal computers over the internet |
US7093006B2 (en) | 2001-07-31 | 2006-08-15 | Motorola, Inc. | Method of dynamically configuring access to services |
US7490350B1 (en) | 2004-03-12 | 2009-02-10 | Sca Technica, Inc. | Achieving high assurance connectivity on computing devices and defeating blended hacking attacks |
DE102007045398A1 (en) | 2007-09-21 | 2009-04-02 | Continental Teves Ag & Co. Ohg | Integrated microprocessor system for safety-critical regulations |
JP5275673B2 (en) * | 2008-04-23 | 2013-08-28 | トヨタ自動車株式会社 | Multi-core system, vehicle gateway device |
US9098462B1 (en) * | 2010-09-14 | 2015-08-04 | The Boeing Company | Communications via shared memory |
EP2461251B1 (en) * | 2010-12-03 | 2017-06-21 | Robert Bosch GmbH | Memory protection unit and a method for controlling an access to a memory device |
US20130179528A1 (en) * | 2012-01-11 | 2013-07-11 | Bae Systems Controls, Inc. | Use of multicore processors for network communication in control systems |
DE102013101508A1 (en) * | 2012-02-20 | 2013-08-22 | Denso Corporation | A data communication authentication system for a vehicle, a network coupling device for a vehicle, a data communication system for a vehicle, and a data communication device for a vehicle |
DE102012207215A1 (en) | 2012-04-30 | 2013-10-31 | Robert Bosch Gmbh | Method and device for monitoring functions of a computer system, preferably an engine control system of a motor vehicle |
DE102012105068A1 (en) * | 2012-06-12 | 2013-12-12 | Eads Deutschland Gmbh | Accelerator with support for virtual machines |
DE102014004004A1 (en) | 2014-03-20 | 2015-09-24 | Audi Ag | Control device in a motor vehicle, motor vehicle and method for operating a control device |
-
2014
- 2014-03-20 DE DE102014004004.6A patent/DE102014004004A1/en not_active Withdrawn
-
2015
- 2015-02-06 US US15/127,314 patent/US9852093B2/en active Active
- 2015-02-06 WO PCT/EP2015/000246 patent/WO2015139799A1/en active Application Filing
- 2015-02-06 EP EP15705196.2A patent/EP3120518A1/en not_active Withdrawn
- 2015-02-06 CN CN201580014730.XA patent/CN106105144B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2013156315A1 (en) * | 2012-04-18 | 2013-10-24 | Schneider Electric Industries Sas | Method of secure management of a memory space for microcontroller |
Non-Patent Citations (2)
Title |
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"IS 300h Hybrid Navigation English", April 2013 (2013-04-01) - June 2014 (2014-06-01), pages 373 - 396, Retrieved from the Internet <URL:https://myportalcontent.toyota-europe.com/Manuals/Lexus/IS_Navi_EE_53B24E.pdf> [retrieved on 20140303] * |
See also references of WO2015139799A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN106105144A (en) | 2016-11-09 |
US20170075835A1 (en) | 2017-03-16 |
CN106105144B (en) | 2018-07-13 |
DE102014004004A1 (en) | 2015-09-24 |
WO2015139799A1 (en) | 2015-09-24 |
US9852093B2 (en) | 2017-12-26 |
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