CN106740569B - A kind of whole-control system multipoint mode checking algorithm - Google Patents
A kind of whole-control system multipoint mode checking algorithm Download PDFInfo
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- CN106740569B CN106740569B CN201611069538.3A CN201611069538A CN106740569B CN 106740569 B CN106740569 B CN 106740569B CN 201611069538 A CN201611069538 A CN 201611069538A CN 106740569 B CN106740569 B CN 106740569B
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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
- B60R16/023—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 transmission of signals between vehicle parts or subsystems
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Abstract
The invention discloses a kind of whole-control system multipoint mode checking algorithms, comprising the following steps: S1, entire car controller and host computer are acquired and store to the equipment distribution address and encryption factor of components in vehicle respectively；Components instrument in S2, vehicle, BMS controller, electric machine controller, inflate controller, steering controller be respectively vehicle CAN network node, and above-mentioned parts are respectively provided with fixed encryption factor, Encryption Algorithm and decipherment algorithm；S3, foundation between components in vehicle is associated with；S4, when carrying out CAN data information between components in vehicle and sending, it is first determined the targets of above- mentioned information sends components and intended recipient components, and target sends after components encrypt information according to the Encryption Algorithm of intended recipient components and retransmits；After S5, intended recipient components receive encrypted information, above-mentioned encrypted information is decrypted, and extract effective information carry out using.
Description
Technical field
The present invention relates to electric vehicle engineering field more particularly to a kind of whole-control system multipoint mode checking algorithms.
Background technique
With the continuous improvement of people's environmental consciousness, the discharge amount for reducing city automobile tail gas is the most important thing.It is various new
Energy automobile is put into people's lives, and wherein the high and low carbocyclic ring of energy efficiency is protected, the electric car of zero-emission becomes city
The main force of new energy traffic automobile.
In operation, vehicle CAN message is especially most important for electric car, determines driveability, the safety of vehicle
Energy；However the CAN message of electric motor coach can be monitored completely by common CAN transceiver at present, and CAN message is interior
Hold there is no verification and ciphering process is realized, so that the communication mechanism of vehicle is completely exposed outside, on the one hand not to vehicle safety
Benefit is not on the other hand high to the protectiveness of the control strategy of vehicle factor and process；So our company is proposed one kind for CAN message
Multipoint mode verification agency and algorithm, mainly using the ID number of CAN message, equipment distribution number and encryption factor verified
And encryption, realize mutual content authentication and external ciphering process.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of verifications of whole-control system multipoint mode to calculate
Method.
Whole-control system multipoint mode checking algorithm proposed by the present invention, comprising the following steps:
S1, entire car controller and host computer respectively carry out the equipment distribution address and encryption factor of components in vehicle
It acquires and stores；
Components instrument in S2, vehicle, electric machine controller, inflates controller, steering controller and is respectively at BMS controller
The node of vehicle CAN network, and above-mentioned parts are respectively provided with fixed encryption factor, Encryption Algorithm and decipherment algorithm；
S3, foundation between components in vehicle is associated with；
S4, when carrying out CAN data information between components in vehicle and sending, it is first determined the targets of above- mentioned information is sent
Components and intended recipient components, and target sends components and carries out according to the Encryption Algorithm of intended recipient components to information
It is retransmited after encryption；
After S5, intended recipient components receive encrypted information, above-mentioned encrypted information is decrypted, and mentions
Take out effective information carry out using.
Preferably, the Encryption Algorithm of components and decipherment algorithm distribute address, zero according to the equipment of components in vehicle
The encryption factor of component, the CAN data ID number of each frame information carry out computations and decryption calculates.
Preferably, the computations formula is as follows:
Keyn=Kn+ (ID&0x00FFFF00) > > 2+Sn；
Wherein, KnFor the encryption factor of each components；SnAddress is distributed for the equipment of each components；ID needs are sent
The ID number of CAN data, the data byte of the ID number add after the encryption factor to 255 complementations；KeynFor the CAN of the frame information
The encryption factor of data ID number.
Preferably, the decryption calculation formula is as follows:
Keyn=Kn+ (ID&0x00FFFF00) > > 2+Sn；
Wherein, KnFor the encryption factor of each components；SnAddress is distributed for the equipment of each components；ID needs are sent
The ID number of CAN data, the data byte of the ID number add after the encryption factor to 255 complementations；KeynFor the CAN of the frame information
The decryption factor of data ID number.
Preferably, step S4 progress one includes operations described below:
S41, target send components and CAN data before encrypting are carried out CRC check calculating, obtain CRC check and C1, and
CRC check and C1 are filled in the first byte；
S42, the encryption factor for calculating the frame data；
S43, computations are carried out to the CAN data that needs are sent using above-mentioned encryption factor；
S44, encrypted CAN data are sent.
Preferably, step S5 progress one includes operations described below:
Calculating is decrypted to the encrypted information received in S51, intended recipient components；
S52, CAN data are decrypted using decryption factor；
S53, CRC check calculating is carried out to the CAN data after decryption；
S54, according to above-mentioned verification calculated result extract effective information carry out using.
Preferably, the instrument has K1 encryption factor, and the BMS controller has K3 encryption factor, described
Electric machine controller has K5 encryption factor, and described inflates controller with K6 encryption factor, and the steering controller has
K7 encryption factor.
The present invention is associated with foundation between components each in vehicle, and when there is information transmission in vehicle between components,
Above- mentioned information are encrypted, guarantee the safety of information transmitting；Meanwhile components are sent to needing to send information in target
Before being encrypted, information before above-mentioned encryption is verified, and the information received is decrypted in intended recipient components
Afterwards, the information after above-mentioned decryption is verified, in this way, being verified to information before encrypting and encrypted information, is made whole
The communication mechanism of vehicle is protected, and the safety of vehicle is not only protected, but also control strategy to vehicle factor and process carry out
Comprehensive protection.Also, the present invention mainly utilize CAN data ID number, component device distribution address in vehicle, encryption factor into
Row verification and encryption, realize in vehicle content authentication and external ciphering process between components, not only ensure that data information
The safety of transmission, and ensured the validity of data information transfer.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of whole-control system multipoint mode checking algorithm.
Specific embodiment
As shown in FIG. 1, FIG. 1 is a kind of whole-control system multipoint mode checking algorithms proposed by the present invention.
Referring to Fig.1, whole-control system multipoint mode checking algorithm proposed by the present invention, comprising the following steps:
S1, entire car controller and host computer respectively carry out the equipment distribution address and encryption factor of components in vehicle
It acquires and stores；
Components instrument in S2, vehicle, electric machine controller, inflates controller, steering controller and is respectively at BMS controller
The node of vehicle CAN network, and above-mentioned parts are respectively provided with fixed encryption factor, Encryption Algorithm and decipherment algorithm；It is described
Instrument have K1 encryption factor, the BMS controller have K3 encryption factor, the electric machine controller have K5 encryption
The factor, described inflates controller with K6 encryption factor, and the steering controller has K7 encryption factor.
S3, foundation between components in vehicle is associated with；
S4, when carrying out CAN data information between components in vehicle and sending, it is first determined the targets of above- mentioned information is sent
Components and intended recipient components, and target sends components and carries out according to the Encryption Algorithm of intended recipient components to information
It is retransmited after encryption；Concrete operations are as follows:
S41, target send components and CAN data before encrypting are carried out CRC check calculating, obtain CRC check and C1, and
CRC check and C1 are filled in the first byte；
S42, the encryption factor for calculating the frame data；
S43, computations are carried out to the CAN data that needs are sent using above-mentioned encryption factor；
S44, encrypted CAN data are sent.
After S5, intended recipient components receive encrypted information, above-mentioned encrypted information is decrypted, and mentions
Effective information is taken out to carry out using concrete operations are as follows:
Calculating is decrypted to the encrypted information received in S51, intended recipient components；
S52, CAN data are decrypted using decryption factor；
S53, CRC check calculating is carried out to the CAN data after decryption；
S54, according to above-mentioned verification calculated result extract effective information carry out using.
In present embodiment, in vehicle the Encryption Algorithm of components and decipherment algorithm according to the equipment of components distributively
Location, the encryption factor of components, the CAN data ID number of each frame information carries out computations and decryption calculates, specific calculation
It is as follows:
The computations formula are as follows:
Keyn=Kn+ (ID&0x00FFFF00) > > 2+Sn；
Wherein, KnFor the encryption factor of each components；SnAddress is distributed for the equipment of each components；ID needs are sent
The ID number of CAN data, the data byte of the ID number add after the encryption factor to 255 complementations；KeynFor the CAN of the frame information
The encryption factor of data ID number.
The decryption calculation formula are as follows:
Keyn=Kn+ (ID&0x00FFFF00) > > 2+Sn；
Wherein, KnFor the encryption factor of each components；SnAddress is distributed for the equipment of each components；ID needs are sent
The ID number of CAN data, the data byte of the ID number add after the encryption factor to 255 complementations；KeynFor the CAN of the frame information
The decryption factor of data ID number.
The present invention mainly verified using component device distribution address, encryption factor in CAN data ID number, vehicle and
Encryption realizes in vehicle content authentication and external ciphering process between components, not only ensure that the peace of data information transfer
Quan Xing, and ensured the validity of data information transfer.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of whole-control system multipoint mode checking algorithm, which comprises the following steps:
S1, entire car controller and host computer are respectively acquired the equipment distribution address and encryption factor of components in vehicle
And it stores；
Components instrument in S2, vehicle, BMS controller, electric machine controller, to inflate controller, steering controller be respectively vehicle
The node of CAN network, and above-mentioned parts are respectively provided with fixed encryption factor, Encryption Algorithm and decipherment algorithm；
S3, foundation between components in vehicle is associated with；
S4, when carrying out CAN data information between components in vehicle and sending, it is first determined the targets of above- mentioned information sends zero
Part and intended recipient components, and target sends components and encrypts according to the Encryption Algorithm of intended recipient components to information
After retransmit；
After S5, intended recipient components receive encrypted information, above-mentioned encrypted information is decrypted, and extracts
Effective information carry out using；
In vehicle the Encryption Algorithm of components and decipherment algorithm according to the equipment distribution address of components, components encryption because
The CAN data ID number of sub, each frame information carries out computations and decryption calculates；
The computations formula is as follows:
Keyn=Kn+ (ID&0x00FFFF00) > > 2+Sn；
Wherein, KnFor the encryption factor of each components；SnAddress is distributed for the equipment of each components；ID is the CAN number for needing to send
According to ID number, the data byte of the ID number adds after the encryption factor to 255 complementations；KeynFor the CAN data of the frame information
The encryption factor of ID number；
The decryption calculation formula is as follows:
Keyn=Kn+ (ID&0x00FFFF00) > > 2+Sn；
Wherein, KnFor the encryption factor of each components；SnAddress is distributed for the equipment of each components；ID is the CAN number for needing to send
According to ID number, the data byte of the ID number adds after the encryption factor to 255 complementations；KeynFor the CAN data of the frame information
The decryption factor of ID number.
2. whole-control system multipoint mode checking algorithm according to claim 1, which is characterized in that step S4 is further wrapped
Include operations described below:
S41, target send components and CAN data before encrypting are carried out CRC check calculating, obtain CRC check and C1, and will
CRC check and C1 are filled in the first byte；
S42, the encryption factor for calculating the frame data；
S43, computations are carried out to the CAN data that needs are sent using above-mentioned encryption factor；
S44, encrypted CAN data are sent.
3. whole-control system multipoint mode checking algorithm according to claim 1, which is characterized in that step S5 is further wrapped
Include operations described below:
Calculating is decrypted to the encrypted information received in S51, intended recipient components；
S52, CAN data are decrypted using decryption factor；
S53, CRC check calculating is carried out to the CAN data after decryption；
S54, according to above-mentioned verification calculated result extract effective information carry out using.
4. whole-control system multipoint mode checking algorithm according to claim 1, which is characterized in that the instrument has
K1 encryption factor, the BMS controller have K3 encryption factor, and the electric machine controller has K5 encryption factor, described
Inflate controller with K6 encryption factor, the steering controller has K7 encryption factor.
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| CN201611069538.3A CN106740569B (en) | 2016-11-28 | 2016-11-28 | A kind of whole-control system multipoint mode checking algorithm |
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| CN108638889B (en) * | 2018-05-16 | 2020-10-27 | 智车优行科技（北京）有限公司 | Vehicle electric handshake checking method and device, vehicle, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105897669A (en) * | 2015-11-11 | 2016-08-24 | 乐卡汽车智能科技（北京）有限公司 | Data sending method, data receiving method, sending terminal, receiving terminal and CAN bus network |
| CN106154903A (en) * | 2015-04-16 | 2016-11-23 | 上海汽车集团股份有限公司 | Carry out, with peripheral hardware, the system and method that information is mutual for car load network |
| CN106143364A (en) * | 2016-07-22 | 2016-11-23 | 北京航空航天大学 | A kind of electric automobile distributed director information security method and system |
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| JP2010272971A (en) * | 2009-05-19 | 2010-12-02 | Nagoya Univ | Control system and method for rewriting control program |
| KR101509899B1 (en) * | 2013-07-09 | 2015-04-07 | 현대자동차주식회사 | Driver oriented control system for vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154903A (en) * | 2015-04-16 | 2016-11-23 | 上海汽车集团股份有限公司 | Carry out, with peripheral hardware, the system and method that information is mutual for car load network |
| CN105897669A (en) * | 2015-11-11 | 2016-08-24 | 乐卡汽车智能科技（北京）有限公司 | Data sending method, data receiving method, sending terminal, receiving terminal and CAN bus network |
| CN106143364A (en) * | 2016-07-22 | 2016-11-23 | 北京航空航天大学 | A kind of electric automobile distributed director information security method and system |
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