CN105739483A - Method for intercepting OBD equipment malicious behaviors and device thereof - Google Patents
Method for intercepting OBD equipment malicious behaviors and device thereof Download PDFInfo
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- CN105739483A CN105739483A CN201610066898.1A CN201610066898A CN105739483A CN 105739483 A CN105739483 A CN 105739483A CN 201610066898 A CN201610066898 A CN 201610066898A CN 105739483 A CN105739483 A CN 105739483A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- 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
- H04L63/1466—Active attacks involving interception, injection, modification, spoofing of data unit addresses, e.g. hijacking, packet injection or TCP sequence number attacks
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24048—Remote test, monitoring, diagnostic
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Abstract
The invention provides a method for intercepting OBD equipment malicious behaviors and a device thereof, belongs to the field of vehicle information security, and is used for solving the problem of bringing hidden trouble to a vehicle when an OBD interface acquires vehicle data and controls the vehicle. The technical key points are that the method comprises the steps that S1. OBD data reflecting OBD equipment operation behaviors in an OBD equipment diagnosis protocol are monitored; S2. when the OBD data are acquired, step S3 is performed; and S3. a corresponding error code (0x7F) of the OBD data is replied to the OBD equipment, and the OBD equipment receives the error code and affirms that the OBD equipment operation behaviors reflected by the OBD data are ineffective and stops operation of the vehicle. The effects are that vehicle bus security can be guaranteed and all the external instruction for controlling or writing in ECU data can be prevented.
Description
Technical field
The invention belongs to information of vehicles security fields, relate to a kind of method and apparatus intercepting OBD equipment malicious act.
Background technology
Vehicle-mounted OBD interface both can provide 12V power supply, vehicle data can be obtained again, so the product based on vehicle-mounted OBD interface is a lot, what have can calculate oil consumption, what have can add up distance travelled, and what have can detect vehicle trouble messages, and what have can also control some electrical equipment of vehicle, such as vehicle window, lock etc..Also hidden danger is brought to car owner while bringing convenience to car owner, because car owner wants the function used to be likely to can become the third party " accomplice ", such as car owner wants to utilize OBD equipment to be automatically switched off/open vehicle window function, other people are by monitoring the data exchange process in this process, it is also possible to the vehicle window of operation car.There is provided a kind of method intercepting OBD equipment malicious act based on the above present invention, make car owner know OBD equipment malicious act onboard, and stop the carrying out of operation.
Summary of the invention
Obtain vehicle data to solve OBD interface, when vehicle is controlled, to the problem of the hidden danger that vehicle brings, the invention provides a kind of method intercepting OBD equipment malicious act, it is possible to achieve to the interception with OBD equipment malicious act, described method includes:
S1. the OBD data of the reaction OBD device action behavior in monitoring OBD device Diagnostic agreement；
When S2. getting these OBD data, perform step S3；
S3. replying the OBD equipment corresponding error code of these OBD data (0x7F), OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation vehicle.
Further, described OBD data are at least one in the OBD data of the diagnosing protocol of the diagnosing protocol of CAN application layer and K application layer: electronic control unit resets (0x11), safety are entered (0x27), write data (0x2E) by identifier；Write internal memory (0x3D) by address, remove diagnostic message (0x14), remotely control (0x31).
Further, when getting these OBD data, first carry out following steps,
These OBD data are stored, and notifies that this action behavior of user is about to perform；
Judged whether this action behavior can perform by user, if be judged as performing, the OBD data of storage are sent to vehicle execution；If be judged as performing, just perform step S3.
Further, by the system monitoring OBD equipment of monitor in real time OBD equipment behavior, this system includes: connect the vehicle-mounted OBD equipment of vehicle-mounted OBD interface, OBD interface increases a patchcord, it connects vehicle-mounted OBD equipment behavior data acquisition hardware, described vehicle-mounted OBD behavioral data acquisition hardware gathers the interaction data of vehicle-mounted OBD equipment and CAN, sends the data to data parsing terminal and resolves, and is shown resolving the behavioural information obtained.
Further, described vehicle-mounted OBD equipment behavior data acquisition hardware, including CAN circuit, K bus circuit, wireless transport module, vehicle-mounted OBD equipment behavior data acquisition hardware monitors vehicle-mounted OBD equipment by CAN or K line, when having data interaction, wireless transport module sends these data to data parsing terminal the behavioural information being shown OBD equipment corresponding to these data.
Further, described data parsing terminal is mobile phone A PP end and/or cloud platform.
The invention still further relates to a kind of device intercepting OBD equipment malicious act, it is characterised in that including:
Monitoring modular, the OBD data of the reaction OBD device action behavior in monitoring OBD device Diagnostic agreement；
OBD data acquisition module, obtains this OBD data；
Blocking module, when getting these OBD data, replys the OBD equipment corresponding error code of these OBD data (0x7F), and OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation vehicle.
Further, described OBD data are at least one in the OBD data of the diagnosing protocol of the diagnosing protocol of CAN application layer and K application layer: electronic control unit resets (0x11), safety are entered (0x27), write data (0x2E) by identifier；Write internal memory (0x3D) by address, remove diagnostic message (0x14), remotely control (0x31).
Further, described device also includes performing judge module, when getting these OBD data, first carries out following steps,
These OBD data are stored, and notifies that this action behavior of user is about to perform；
Judged whether this action behavior can perform by user, if be judged as performing, the OBD data of storage are sent to vehicle execution；If be judged as performing, just performing to reply the OBD equipment corresponding error code of these OBD data (0x7F), OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation the step of vehicle.
Further, by the system monitoring OBD equipment of monitor in real time OBD equipment behavior, this system includes: connect the vehicle-mounted OBD equipment of vehicle-mounted OBD interface, OBD interface increases a patchcord, it connects vehicle-mounted OBD equipment behavior data acquisition hardware, described vehicle-mounted OBD behavioral data acquisition hardware gathers the interaction data of vehicle-mounted OBD equipment and CAN, sends the data to data parsing terminal and resolves, and is shown resolving the behavioural information obtained；Described vehicle-mounted OBD equipment behavior data acquisition hardware, including CAN circuit, K bus circuit, wireless transport module, vehicle-mounted OBD equipment behavior data acquisition hardware monitors vehicle-mounted OBD equipment by CAN or K line, when having data interaction, wireless transport module sends these data to data parsing terminal the behavioural information being shown OBD equipment corresponding to these data.
Beneficial effect: ensure vehicle bus safety, it is prevented that the instruction of all controls outside or write ECU data.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of the vehicle-mounted OBD equipment behavior data acquisition hardware of the present invention；
Fig. 2 is the system composition schematic diagram of monitor in real time OBD equipment behavior of the present invention；
Fig. 3 is the flow chart of detection method.
Detailed description of the invention
Embodiment 1: a kind of method intercepting OBD equipment malicious act, including:
S1. the OBD data of the reaction OBD device action behavior in monitoring OBD device Diagnostic agreement；
When S2. getting these OBD data, perform step S3；
S3. the OBD equipment corresponding error code of these OBD data (0x7F) is replied, the instruction such as remotely controlling vehicle window rise is 0x310xB90x02, the hardware intercepting OBD equipment malicious act responds immediately to 0x7F0x310x11, OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation vehicle.And interception record is uploaded to APP or cloud platform.
Embodiment 2: there is the technical scheme identical with embodiment 1, more specifically: wherein: described OBD data are at least one in the OBD data of the diagnosing protocol of the diagnosing protocol of CAN application layer (ISO14229) and K application layer (ISO14230): electronic control unit resets (0x11), safety are entered (0x27), write data (0x2E) by identifier；Write internal memory (0x3D) by address, remove diagnostic message (0x14), remotely control (0x31).
Embodiment 3: there is the technical scheme identical with embodiment 1 or 2, more specifically: when getting these OBD data, first carry out following steps,
These OBD data are stored, and notifies that this action behavior of user is about to perform；
Judged whether this action behavior can perform by user, if be judged as performing, the OBD data of storage are sent to vehicle execution；If be judged as performing, just perform step S3.This step makes to be supplied to operation interface during user's real OBD malicious act, it is prevented that user's vehicle malicious modification；Ensure vehicle bus safety, it is prevented that owing to incorrect operation causes vehicle ECU " paralysis ".
Embodiment 4: have and the identical technical scheme of embodiment 1 or 2 or 3, more specifically: by the system monitoring OBD equipment of monitor in real time OBD equipment behavior, this system includes: connect the vehicle-mounted OBD equipment of vehicle-mounted OBD interface, OBD interface increases a patchcord, it connects vehicle-mounted OBD equipment behavior data acquisition hardware, described vehicle-mounted OBD behavioral data acquisition hardware gathers the interaction data of vehicle-mounted OBD equipment and CAN, send the data to data parsing terminal resolve, and shown resolving the behavioural information obtained.
Described vehicle-mounted OBD equipment behavior data acquisition hardware, including CAN circuit, K bus circuit, wireless transport module, vehicle-mounted OBD equipment behavior data acquisition hardware monitors vehicle-mounted OBD equipment by CAN or K line, when having data interaction, wireless transport module sends these data to data parsing terminal the behavioural information being shown OBD equipment corresponding to these data.
Preferred as technical scheme, described data parsing terminal is mobile phone A PP end and/or cloud platform.
Embodiment 5: a kind of device intercepting OBD equipment malicious act, including:
Monitoring modular, the OBD data of the reaction OBD device action behavior in monitoring OBD device Diagnostic agreement；
OBD data acquisition module, obtains this OBD data；
Blocking module, when getting these OBD data, reply the OBD equipment corresponding error code of these OBD data (0x7F), the instruction such as remotely controlling vehicle window rise is 0x310xB90x02, the hardware intercepting OBD equipment malicious act responds immediately to 0x7F0x310x11, OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation vehicle.And interception record is uploaded to APP or cloud platform.
Described OBD data are at least one in the OBD data of the diagnosing protocol of the diagnosing protocol of CAN application layer and K application layer: electronic control unit resets (0x11), safety are entered (0x27), write data (0x2E) by identifier；Write internal memory (0x3D) by address, remove diagnostic message (0x14), remotely control (0x31).
Embodiment 6: there is the technical scheme identical with embodiment 5, more specifically, described device also includes performing judge module, when getting these OBD data, first carries out following steps,
These OBD data are stored, and notifies that this action behavior of user is about to perform；
Judged whether this action behavior can perform by user, if be judged as performing, the OBD data of storage are sent to vehicle execution；If be judged as performing, just perform to reply the OBD equipment corresponding error code of these OBD data (0x7F), the instruction such as remotely controlling vehicle window rise is 0x310xB90x02, the hardware intercepting OBD equipment malicious act responds immediately to 0x7F0x310x11, OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation the step of vehicle.And interception record is uploaded to APP or cloud platform.
Embodiment 7, there is the technical scheme identical with embodiment 5 or 6, more specifically: by the system monitoring OBD equipment of monitor in real time OBD equipment behavior, this system includes: connect the vehicle-mounted OBD equipment of vehicle-mounted OBD interface, OBD interface increases a patchcord, it connects vehicle-mounted OBD equipment behavior data acquisition hardware, described vehicle-mounted OBD behavioral data acquisition hardware gathers the interaction data of vehicle-mounted OBD equipment and CAN, send the data to data parsing terminal resolve, and shown resolving the behavioural information obtained；Described vehicle-mounted OBD equipment behavior data acquisition hardware, including CAN circuit, K bus circuit, wireless transport module, vehicle-mounted OBD equipment behavior data acquisition hardware monitors vehicle-mounted OBD equipment by CAN or K line, when having data interaction, wireless transport module sends these data to data parsing terminal the behavioural information being shown OBD equipment corresponding to these data.Analysis can realize in vehicle-mounted OBD equipment behavior data acquisition hardware, and the vehicle-mounted OBD equipment behavior data acquisition hardware in the present embodiment still has the functions such as Filtering Analysis, it is contemplated that vehicle-mounted OBD equipment behavior data acquisition hardware installation site is comparatively hidden, this hardware cannot conveniently be shown to user, so showing to user at mobile phone terminal.The another one reason resolved at mobile phone terminal is exactly upgrade the efficiency far of mobile phone terminal program higher than the efficiency of upgrading hardware, it is possible to quickly update APP.
Embodiment 8: the present embodiment has the technical scheme identical with embodiment 7, and the method that the data parsing of reception is become vehicle-mounted OBD equipment behavior information by described parsing terminal is: such as accompanying drawing 3, this parsing is really when obtaining vehicle-mounted OBD transmission instruction, this instruction has been resolved, instruction is corresponding with behavior, the parsing of instruction carries out according to international standard 14229 and 15031, wherein 15031 define the implication of partial value, some is depot's custom instruction, but is all consistent with international standard.
Accompanying drawing 3 gives the resolving of the behavior " obtaining vehicle motor rotating speed " of OBD equipment, vehicle-mounted OBD equipment sends instruction code, example: 07DF, 02010C, these data are listened to, by CAN or K line, this instruction that vehicle-mounted OBD equipment sends by vehicle-mounted OBD equipment behavior data acquisition hardware, and wireless transport module sends these data to data parsing terminal carry out resolving and shown the behavioural information of OBD equipment corresponding to these data.In resolving, owing to the behavior resolved is the carrying out according to international standard 14229 and 15031, it is possible to just obtained the behavioral data of its correspondence by the instruction code of 07DF, 02010C.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope of present disclosure; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention.
Claims (10)
1. the method intercepting OBD equipment malicious act, including:
S1. the OBD data of the reaction OBD device action behavior in monitoring OBD device Diagnostic agreement；
When S2. getting these OBD data, perform step S3；
S3. replying the OBD equipment corresponding error code of these OBD data (0x7F), OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation vehicle.
2. the method for claim 1, it is characterized in that, described OBD data are at least one in the OBD data of the diagnosing protocol of the diagnosing protocol of CAN application layer and K application layer: electronic control unit resets (0x11), safety are entered (0x27), write data (0x2E) by identifier；Write internal memory (0x3D) by address, remove diagnostic message (0x14), remotely control (0x31).
3. the method for claim 1, it is characterised in that when getting these OBD data, first carry out following steps,
These OBD data are stored, and notifies that this action behavior of user is about to perform；
Judged whether this action behavior can perform by user, if be judged as performing, the OBD data of storage are sent to vehicle execution；If be judged as performing, just perform step S3.
4. the method as described in claim 1 or 2 or 3, it is characterized in that, by the system monitoring OBD equipment of monitor in real time OBD equipment behavior, this system includes: connect the vehicle-mounted OBD equipment of vehicle-mounted OBD interface, OBD interface increases a patchcord, it connects vehicle-mounted OBD equipment behavior data acquisition hardware, described vehicle-mounted OBD behavioral data acquisition hardware gathers the interaction data of vehicle-mounted OBD equipment and CAN, send the data to data parsing terminal resolve, and shown resolving the behavioural information obtained.
5. method as claimed in claim 4, it is characterized in that, described vehicle-mounted OBD equipment behavior data acquisition hardware, including CAN circuit, K bus circuit, wireless transport module, vehicle-mounted OBD equipment behavior data acquisition hardware monitors vehicle-mounted OBD equipment by CAN or K line, when having data interaction, wireless transport module sends these data to data parsing terminal the behavioural information being shown OBD equipment corresponding to these data.
6. method as claimed in claim 5, it is characterised in that described data parsing terminal is mobile phone A PP end and/or cloud platform.
7. the device intercepting OBD equipment malicious act, it is characterised in that including:
Monitoring modular, the OBD data of the reaction OBD device action behavior in monitoring OBD device Diagnostic agreement；
OBD data acquisition module, obtains this OBD data；
Blocking module, when getting these OBD data, replys the OBD equipment corresponding error code of these OBD data (0x7F), and OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation vehicle.
8. device as claimed in claim 7, it is characterized in that, described OBD data are at least one in the OBD data of the diagnosing protocol of the diagnosing protocol of CAN application layer and K application layer: electronic control unit resets (0x11), safety are entered (0x27), write data (0x2E) by identifier；Write internal memory (0x3D) by address, remove diagnostic message (0x14), remotely control (0x31).
9. device as claimed in claim 7, it is characterised in that also include performing judge module, when getting these OBD data, first carry out following steps,
These OBD data are stored, and notifies that this action behavior of user is about to perform；
Judged whether this action behavior can perform by user, if be judged as performing, the OBD data of storage are sent to vehicle execution；If be judged as performing, just performing to reply the OBD equipment corresponding error code of these OBD data (0x7F), OBD equipment receives this error code, then assert that the OBD device action behavior that these OBD data are reacted is invalid, stop operation the step of vehicle.
10. the device as described in claim 7 or 8 or 9, it is characterized in that, by the system monitoring OBD equipment of monitor in real time OBD equipment behavior, this system includes: connect the vehicle-mounted OBD equipment of vehicle-mounted OBD interface, OBD interface increases a patchcord, it connects vehicle-mounted OBD equipment behavior data acquisition hardware, described vehicle-mounted OBD behavioral data acquisition hardware gathers the interaction data of vehicle-mounted OBD equipment and CAN, send the data to data parsing terminal resolve, and shown resolving the behavioural information obtained；Described vehicle-mounted OBD equipment behavior data acquisition hardware, including CAN circuit, K bus circuit, wireless transport module, vehicle-mounted OBD equipment behavior data acquisition hardware monitors vehicle-mounted OBD equipment by CAN or K line, when having data interaction, wireless transport module sends these data to data parsing terminal the behavioural information being shown OBD equipment corresponding to these data.
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| CN201610066898.1A CN105739483B (en) | 2016-01-29 | 2016-01-29 | The method and apparatus for intercepting OBD equipment malicious act |
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| CN201610066898.1A CN105739483B (en) | 2016-01-29 | 2016-01-29 | The method and apparatus for intercepting OBD equipment malicious act |
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