CN104702418B - A kind of vehicle identity authentication method for dividing equally RSU calculation amounts - Google Patents
A kind of vehicle identity authentication method for dividing equally RSU calculation amounts Download PDFInfo
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- CN104702418B CN104702418B CN201510161321.4A CN201510161321A CN104702418B CN 104702418 B CN104702418 B CN 104702418B CN 201510161321 A CN201510161321 A CN 201510161321A CN 104702418 B CN104702418 B CN 104702418B
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Abstract
The present invention discloses a kind of vehicle identity authentication method for dividing equally RSU calculation amounts, comprises the following steps：The marking of cars simultaneously sends message, including calculates message processing rank, generation information signature, generation processing level of signature；Region server coordinates RSU, which includes being divided into coordination phase and work phase；In generation, calculates RSU and assists commission RSU to carry out authentication to vehicle message；Region server verifies the Message Processing rank of vehicle.
Description
Technical field
The present invention relates to car networking technology, and in particular to a kind of vehicle identity authentication method for dividing equally RSU calculation amounts.
Background technology
With the popularization and road traffic great-leap-forward development, automaker and communications service provider of China's automobile in vehicle and
Road roadside lays communications facility and to provide various services for road vehicle, comfortable to improve drive safety and driver and passenger
Degree, and optimize traffic.This equipment being laid on vehicle is called board units OBU (Onboard Units), is laid in road
The equipment on side is called roadside unit RSU (Roadside Units), constructs vehicular ad hoc network VANET (Vehicle Ad Hoc
Network).VANET includes two kinds of communications：Communication V2V (Vehicle To Vehicle) and vehicle between vehicle and vehicle with
Communication V2I (Vehicle To Instruction) between infrastructure.Generally, also can be by wired between roadside unit RSU
Mode connects, and forms network.
Because VANET is an open network, be subject to various attacks, such as forge a signature, man-in-the-middle attack,
Message is distorted.In-vehicle networking can just play raising only in the case of message is reliable and drive comfortable and safe property, improve and hand over
The effect of logical situation.The car for lacking message authentication mechanisms is easy to be utilized by attacker in network, spoofing is issued, to traffic
Situation and traffic safety cause very big threat, so being authenticated in VANET to the message in network particularly significant.So
And the dynamic of VANET, link short life and the factors such as network topology mechanism is unstable cause message authentication and biography in network
Making a big difference in system network.Such as：In VANET environment, many vehicles that a RSU can receive surrounding at the same time are sent
Message package, system application requirement RSU in a short time can verify message, handled and be transmitted.Therefore, in VANET,
It is critically important that the message that RSU sends vehicle carries out authentication.
In practical application, RSU is equidistantly generally laid in both sides of the road, is gone out in intersection, parking lot and highway
The key areas such as entrance add the calculation amount that RSU shares testing vehicle register certification, to ensure the service quality when vehicle is intensive.But
It is that many times RSU still undertakes excessive calculation amount, so as to reduce service quality.Its reason is analyzed, mainly there is at 2 points：
First, the distribution situation of vehicle has very big randomness, is influenced by when and where.Second, the distribution situation of vehicle is also
Influenced be subject to some accidents.Such as：Road congestion caused by traffic accident, traffic density are big.These reasons can all cause certain
Vehicle fleet size around a little RSU exceeds the vehicle fleet size that RSU can be serviced.Therefore, traditional RSU to vehicle in coverage into
Row identity authentication method it is busy it cannot be guaranteed that service quality and system it is safe and reliable.
The content of the invention
Goal of the invention：It is an object of the invention to the shortcomings of the prior art, proposes a kind of car for dividing equally RSU calculation amounts
Identity identifying method, to improve testing vehicle register authentication efficiency, the stability of safeguards system and improves service quality.
Technical solution：A kind of vehicle identity authentication method for dividing equally RSU calculation amounts of the present invention, including following step
Suddenly：
(1) it is installed on vehicle ViBoard units OBUiThe Message Processing rank for sending message is calculated and marked, is then generated
The signature of message and Message Processing rank, is sent to neighbouring RSU；Board units OBUiIn be stored with key, service class and
Type of message marking convention；
(2) region server LS coordinates the RSU in its region, specifies the processing locality rank of each RSU and forms RSU pairs；
(3) each RSU is to including a commission RSUjRSU is calculated with generationj, generation calculating RSUjAssist commission RSUjRealization pair
The authentication of vehicle.
Further, vehicle V in the step (1)iProduce message M to be senti, board units OBUiMark and send this
The detailed process of message is as follows：
(11) board units OBUiCalculate message MiProcessing rank PMi, PMi=TMi|(CMi*Si), CMiFor type of message level
Not, SiFor service class, TMiFor acknowledgement messaging type and TMi∈ { 0,1 }, even board units OBUiThe message of transmission need not answer
Answer or return, then TMiValue is 0, if desired replys or return confirmation, then TMiValue is 1；
(12) board units OBUiTo message MiWith the processing rank P of messageMiGenerate a digital digest HMi=hash (Mi
||PMi)；
(13) board units OBUiGenerate message MiWith message MiProcessing rank PMiSignature sigmaMi, σMi=E (PriKi,
HMi), HMiFor the summary of message to be sent and Message Processing rank, private key PriKiFor the encrypted private key of vehicle；
(14) board units OBUiPeripherad RSU sends message { PIDi,Mi,PMi,σMi},PIDiFor vehicle ViAssumed name,
Assigned by trust authority TA.
Further, in step (1)：
The board units OBUiThe key of storage includes a pair of of the key of vehicle and the public key of trust authority TA, vehicle
Key includes private key PriKiWith public key PubKi；The private key PriKiKept secure is in security medium, not to its in network
His member discloses；Public key PubKiPublish to be stored on public server and inquired about for other network members；
The board units OBUiThe service class S of storageiBy vehicle supervision, department issues, with marked vehicle in VANET
Receive the priority level of service, such as：School bus service class is higher than the service class S of common vehiclei∈N*；
The board units OBUiThe message marking convention of storage is used to mark its message class to sent vehicle message
Type rank CMi, by vehicle supervision agencies dictate, such as：The relevant type of message of vehicle safety is superior to that vehicle entertainment is relevant to disappear
Cease type level.
Further, in the step (2), region server LS coordinates the evaluation work of all RSU in its region, region
A regular time section is included coordination phase and work by server LS
Phase, the big I of work period T are determined according to the frequency that vehicle distribution situation in region changes.Work period T is distributed with vehicle
Situation change frequent degree is positively correlated, and the detailed process of step (2) is in the coordination phase：
(21) all RSU in regioni, i ∈ { 1,2,3,4,5 ... } reported upper work period to region server LS
Calculating situation in T, includes RSUiIt is currently available for the calculation amount E of vehicle message authenticationiIn last work period T
Processing locality rank PRSUi；
(22) region server LS obtains each RSU in regioniReport message, calculate and obtain each RSUiIn this work week
Processing locality rank in phase TWherein α is one and the processing rank of message is distributed
A related parameter；
(23) region server LS assigns commission RSUjRSU is calculated with generationk, successively decrease sequentially by the processing locality rank of generation
To all RSU in regioni, i ∈ { 1,2,3,4,5 ... }, which sort, generates a deque, and head of the queue and tail of the queue go out team at the same time, together
When to go out two RSU groups of team be one RSU pairs, wherein head of the queue goes out the RSU of team for commission RSUj, the RSU that tail of the queue goes out team is to count in generation
Calculate RSUk；
(24) region server LS is to all RSUiSend mark messageWherein B ∈ { 0,1 }, when this
RSU is commission RSUjWhen, B=0；RSU is calculated for generationkWhen, B=1；For RSUiAnother member's of place RSU centerings
Identity.
Further, the work phase is entered after the coordination phase, entrusts RSUjMessage Processing rank is received less than this
When ground handles the message of rank, in the generation of each RSU centerings, calculates RSUkAssist commission RSUjThe identity of vehicle is authenticated, and is returned
Return result and give commission RSUjUntil the work phase in this work period terminate or some RSU initiate coordinate request；Wherein, in generation, calculates
RSUkAssist commission RSUjThe detailed process being authenticated to the identity of vehicle is：
(31) RSU is entrustedjReceive the message { PID of vehicle transmissioni,Mi,PMi,σMi, work as PMi<P′RSUjWhen, this commission
RSUjIn the generation for transmitting the message to pairing, calculates RSUk, entrust its generation to calculate, message is { PIDi,Mi,PMi,σMi, SN }, wherein SN
For the mark of this message, by entrusting RSUjGeneration；
(32) in generation, calculates RSUkReceive message { PIDi,Mi,PMi,σMi, SN } after, obtain vehicle to region server application
ViEncrypted public key PubKi, the signature of message is authenticated；
(33) in generation, calculates RSUkMessage is verified, verification equation is：
D(PubKi,σi)=hash (Mi||Pi), it is other to the process level of vehicle message and message if equation is set up
Certification is effective, otherwise to be invalid；
(34) in generation, calculates RSUkAuthentication result returns to commission RSUj。
Road traffic can sometimes be influenced be subject to accident, and within the work phase, some RSU to may around gather suddenly
Collect substantial amounts of vehicle, RSU can not meet the needs that service calculates authentication.At this time, RSU initiates to coordinate to region server
Request, after coordination service device receives request, terminates the work phase, restarts a wheel and coordinates the phase, RSU assigns this in region for this
The lower RSU of ground processing rank forms RSU pairs.
Further, the region server LS can also verify the legitimacy of marking of cars Message Processing rank：
In region server, enquiring vehicle ViThe message M of transmissioniAcknowledgement type TMiWith type of message rank CMi, then to vehicle
The service class S of supervision department's enquiring vehiclei, judge PMi=TMi|(CMi*Si) whether set up, detailed process is：
(41) region server LS extracts the message { PID by testing vehicle register certificationi,Mi,PMi,σMi, according to message Mi
Judge its acknowledgement messaging type TMiWith type of message rank CMi；
(42) region server LS asks to obtain the service class S of vehicle to vehicle supervision department serveri；
(43) equation is verified：PMi=TMi|(CMi*Si) whether set up, such as set up, then verification is effective；It is invalid, then verify
Invalid, there is the problem of empty mark Message Processing rank in vehicle；
(44) region server LS transmits verification result to vehicle supervision department, message such as { PIDi,J}。
Beneficial effect：Compared with prior art, the present invention has the following advantages：
(1) RSU in the region server coordination region in the present invention forms RSU pairs, the calculating of the RSU in equalization region
Amount, is applicable to the situation that RSU calculation amounts are unbalance in region；Region server presses the RSU co-ordinations in cycle co-ordination region,
Enhance under emergency situations, the reply service ability of surrounding RSU；
(2) present invention can improve the service quality of RSU in heavy duty zone, and the RSU in busy condition is by part messages
In the generation in idle condition, calculates RSU and carries out authentication in trust zones；
(3) message that the vehicle in the present invention produces in local computing and marks Message Processing rank, is received easy to RSU
Divide priority processing after message, the relevant important messages of vehicle safety and the relevant emergency message of calling for help alarm can preferentially be located
Reason and response；The Message Processing rank of vehicle mark generates signature together in local and message, ensure that the message of the marking of cars
Processing rank will not be distorted by hostile network member, while ensure that vehicle non-repudiation in mark legitimacy detection.
(4) invention introduces marking of cars Message Processing rank legitimacy testing mechanism, region server can check car
Whether the processing rank of empty mark message.
Brief description of the drawings
Fig. 1 is the structure diagram of hardware in embodiment；
Fig. 2 is the general frame figure of the present invention；
Fig. 3 is the flow diagram of the present invention；
Fig. 4 is the flow chart that region server coordinates RSU in the present invention；
Fig. 5 is the information flow direction figure of RSU cooperated computings in the present invention.
Embodiment
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
Embodiment：
Step 1：Board units OBU is calculated and is marked the processing rank of message to be sent and generate signature, is sent to surrounding
RSU.
Certain vehicle ViOn be mounted with board units OBUi, produce a message M to be senti={ Location E119.27
N32.12 }, content reports the geographical location where vehicle for vehicle.Board units OBUiInquiry obtains vehicle ViSeeervice level
Other Si=2, this message is without response, therefore TMi=0, the type of message rank C of the messageMi=3.By formula PMi=TMi|(CMi*
Si) calculate the Message Processing rank P for obtaining the messageMi=0.
Board units OBUiBy formula HMi=hash (Mi||PMi) generation message MiWith the processing rank P of messageMi256
Digital digest is：
HMi={ C458428D7668B56B848E51FBABD8EAB6C0641622B078C8BBC54D5E42 2217B733 }
Board units OBUiBy formula σMi=E (PriKi,HMi) generation message MiWith message MiProcessing rank PMiSignature be：
σMi={ 2ECB4AF061559B30B7CCA767458AC72BF4E201902A385E9023040CD3 399DDC6D }
The wherein encrypted private key of vehicle is：
PriKi={ 950A646605AD8674D2C2BC3CB287D91269712943E3CCB99A4715BC07 CE71E6F1 }
Board units OBUiPeripherad RSU sends message { PIDi,Mi,PMi,σMi},PIDi={ GY9HG7GH } is vehicle
ViAssumed name, assigned by trust authority TA, message content is：
Step 2：RSU in region server LS coordination regions forms RSU pairs, and assigns commission RSUjCalculated with generation
RSUk。
RSU in regioniThe calculating situation in a upper work period T is reported to region server LS, includes RSUiCurrently
Calculation amount E available for vehicle message authenticationiWith the processing locality rank P in last work period TRSUi, the value model of i
Enclose for 1~n
Region server LS obtains all RSU in regioni, the report message of i ∈ { 1,2,3,4,5 ... }, calculates and obtains
Processing locality ranks of each RSU in this work period TWherein α for one with
A parameter of pass is distributed with the processing rank of message；
Region server LS assigns commission RSUjRSU is calculated with generationk, successively decrease order to area by the processing locality rank of generation
RSU sequences one deque of generation in domain, head of the queue and tail of the queue go out team at the same time, while two RSU groups for going out team are a RSU
Right, the RSU that wherein head of the queue goes out team is commission RSUj, the RSU that tail of the queue goes out team is to calculate RSU in generationk；
Region server LS is to all RSUi, i ∈ { 1,2,3,4,5 ... }, which are sent, marks messageIts
Middle B ∈ { 0,1 }, as this RSUiTo entrust RSUjWhen, B=0；RSU is calculated for generationkWhen, B=1；For RSUiRSU pairs of place
In another member identity.
Step 3：In generation, calculates RSUkAssist commission RSUjThe identity of vehicle is authenticated.
Entrust RSUjReceive the message { PID of vehicle transmissioni,Mi,PMi,σMi, work as Pi<PRSUjWhen, this commission RSUjIt will disappear
In the generation that breath is sent to pairing, calculates RSUk, entrust its generation to calculate, message is { PIDi,Mi,PMi,σMi, SN }, wherein SN=
4564234 be the mark of this message；
In generation, calculates RSUkReceive message { PIDi,Mi,PMi,σMi, SN } after, obtain vehicle V to region server applicationi's
Encrypted public key, is：
PubKi={ 8EDC063E70A4D323F9BDE5B6FC9E10A809E86CAB007A1AB3E3197B2A 9E0C
Then the signature of message is authenticated；
In generation, calculates RSUkMessage is verified, verification equation is：
D(PubKi,σi)=hash (Mi||Pi), equation is set up, therefore to the other certification of process level of vehicle message and message
Effectively；
In generation, calculates RSUkAuthentication result returns to commission RSUj, message is such as：{4564234,valide}
It is to test below meanwhile region server LS can also verify the legitimacy of marking of cars Message Processing rank
Demonstrate,prove vehicle ViTo message MiThe other legitimate verification of annotated message process level：
Region server LS reads the message { PID of testing vehicle register certificationi,Mi,PMi,σMi, wherein PMi=0, according to message
MiJudge its acknowledgement messaging type TMi=0 and type of message rank CMi=3
Region server LS asks to obtain the service class S of vehicle to vehicle supervision department serveri=2
Verify equation：PMi=TMi|(CMi*Si) set up, verification is effective, and asking for empty mark Message Processing rank is not present in vehicle
Topic
Region server LS transmits verification result to vehicle supervision department, message such as { GY9HG7GH, valide }.
Claims (6)
- A kind of 1. vehicle identity authentication method for dividing equally RSU calculation amounts, it is characterised in that：Comprise the following steps：(1) it is installed on vehicle ViBoard units OBUiThe Message Processing rank for sending message is calculated and marked, then generates message And the signature of Message Processing rank, it is sent to neighbouring RSU；Board units OBUiIn be stored with key, service class and message Type mark rule；(2) region server LS coordinates the RSU in its region, specifies the processing locality rank of each RSU and forms RSU pairs；(3) each RSU is to including a commission RSUjRSU is calculated with generationk, generation calculating RSUkAssist commission RSUjRealize to vehicle Authentication.
- 2. the vehicle identity authentication method according to claim 1 for dividing equally RSU calculation amounts, it is characterised in that：The step (1) vehicle V iniProduce message M to be senti, board units OBUiThe detailed process for marking and sending this message is as follows：(11) board units OBUiCalculate message MiProcessing rank PMi, PMi=TMi|(CMi*Si), CMiFor type of message rank, Si For service class, TMiFor acknowledgement messaging type and TMi∈ { 0,1 }, even board units OBUiThe message of transmission is without response or returns Return, then TMiValue is 0, if desired replys or return confirmation, then TMiValue is 1；(12) board units OBUiTo message MiWith the processing rank P of messageMiGenerate a digital digest HMi=hash (Mi|| PMi)；(13) board units OBUiGenerate message MiWith message MiProcessing rank PMiSignature sigmaMi, σMi=E (PriKi,HMi), HMi For the summary of message to be sent and Message Processing rank, private key PriKiFor the encrypted private key of vehicle；(14) board units OBUiPeripherad RSU sends message { PIDi,Mi,PMi,σMi},PIDiFor vehicle ViAssumed name, by believing Mechanism TA is appointed to assign.
- 3. the vehicle identity authentication method according to claim 1 for dividing equally RSU calculation amounts, it is characterised in that：Step (1) In：The board units OBUiThe key of storage includes the key of vehicle and the public key of trust authority TA, and the key of vehicle includes Private key PriKiWith public key PubKi；The private key PriKiKept secure is not public to other members in network in security medium Open；Public key PubKiPublish to be stored on public server and inquired about for other network members；The board units OBUiThe service class S of storageiBy vehicle supervision, department issues, and is received with marked vehicle in VANET The priority level of service, Si∈N*；The board units OBUiThe type of message marking convention of storage is used to mark its type of message to sent vehicle message Rank CMi, by vehicle supervision agencies dictate.
- 4. the vehicle identity authentication method according to claim 1 for dividing equally RSU calculation amounts, it is characterised in that：The step (2) in, for region server LS using a regular time section as one work period T, a work period T includes association Tune phase and work phase, the detailed process of step (2) is in the coordination phase：(21) all RSU in regioni, i ∈ { 1,2,3,4,5 ... } are into the upper work period T of region server LS reports Calculating situation, includes RSUiIt is currently available for the calculation amount E of vehicle message authenticationiWith being originally located in last work period T Manage rank PRSUi；(22) region server LS obtains each RSU in regioniReport message, calculate and obtain each RSUiIn this work period T Processing locality rankWherein α is one and pass is distributed with the processing rank of message A parameter；(23) region server LS assigns commission RSUjRSU is calculated with generationk, successively decrease order to area by the processing locality rank of generation All RSU in domaini, i ∈ { 1,2,3,4,5 ... } sequence one deque of generation, head of the queue and tail of the queue go out team, go out at the same time at the same time Two RSU groups of team are one RSU pairs, and the RSU that wherein head of the queue goes out team is commission RSUj, the RSU that tail of the queue goes out team is to calculate in generation RSUk；(24) region server LS is to all RSUiSend mark messageWherein B ∈ { 0,1 }, when this RSU is Entrust RSUjWhen, B=0；RSU is calculated for generationkWhen, B=1；For RSUiThe identity of another member of place RSU centerings, When this RSU is commission RSUjWhen, another member is RSUk；When this RSU is to calculate RSU in generationkWhen, another member is RSUj。
- 5. the vehicle identity authentication method according to claim 4 for dividing equally RSU calculation amounts, it is characterised in that：The coordination Enter the work phase after phase, entrust RSUjReceive Message Processing rank be less than processing locality rank message when, each RSU In the generation of centering, calculates RSUkAssist commission RSUjThe identity of vehicle is authenticated, and returns result to commission RSUjUntil this work Make the work phase in the cycle terminate or some RSU initiate coordinate request；Wherein, in generation, calculates RSUkAssist commission RSUjTo vehicle The detailed process that identity is authenticated is：(31) RSU is entrustedjReceive the message { PID of vehicle transmissioni,Mi,PMi,σMi, work as PMi<PR'SUjWhen, this commission RSUjWill In the generation that message is sent to pairing, calculates RSUk, entrust its generation to calculate, message is { PIDi,Mi,PMi,σMi, SN }, wherein SN is this The mark of message, by entrusting RSUjGeneration；(32) in generation, calculates RSUkReceive message { PIDi,Mi,PMi,σMi, SN } after, obtain vehicle V to region server applicationi's Public key PubKi, the signature of message is authenticated；(33) in generation, calculates RSUkMessage is verified, verification equation is：D(PubKi,σi)=hash (Mi||Pi), if equation is set up, the other certification of process level to vehicle message and message has Effect, otherwise to be invalid；(34) in generation, calculates RSUkAuthentication result returns to commission RSUj。
- 6. the vehicle identity authentication method according to claim 1 for dividing equally RSU calculation amounts, it is characterised in that：The region Server LS can also verify the legitimacy of marking of cars Message Processing rank：In region server, enquiring vehicle Vi The message M of transmissioniAcknowledgement type TMiWith type of message rank CMi, then to the service class of vehicle supervision department enquiring vehicle Si, judge PMi=TMi|(CMi*Si) whether set up, detailed process is：(41) region server LS extracts the message { PID by testing vehicle register certificationi,Mi,PMi,σMi, according to message MiJudge it Acknowledgement messaging type TMiWith type of message rank CMi；(42) region server LS asks to obtain the service class S of vehicle to vehicle supervision department serveri；(43) equation is verified：PMi=TMi|(CMi*Si) whether set up, such as set up, then verification is effective；Invalid, then it is invalid to verify, There is the problem of empty mark Message Processing rank in vehicle；(44) region server LS transmits verification result to vehicle supervision department, message such as { PIDi,J}。
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| CN105847235B (en) * | 2016-03-14 | 2019-01-01 | 安徽大学 | Identity-based efficient anonymous batch authentication method in Internet of vehicles environment |
| CN105704245B (en) * | 2016-04-12 | 2019-08-20 | 上海昊蕾信息技术有限公司 | Mass data processing method based on car networking |
| CN106454825B (en) * | 2016-09-22 | 2019-06-28 | 北京航空航天大学 | A kind of vehicle assistant authentification method under car networking environment |
| CN107122193B (en) * | 2017-04-28 | 2020-09-08 | 中国中车股份有限公司 | Dynamic adjustment method for message thread suspension time |
| CN107682859B (en) * | 2017-08-31 | 2020-07-14 | 上海华为技术有限公司 | Message processing method and related equipment |
| CN110971397B (en) | 2018-09-28 | 2021-09-14 | 华为技术有限公司 | Communication method, communication device, server and system |
| CN110855670B (en) * | 2019-11-15 | 2021-12-03 | 扬州大学 | Method suitable for credible message broadcasting and security authentication of vehicle-mounted ad hoc network |
| CN117395661B (en) * | 2023-12-11 | 2024-03-12 | 蓝色火焰科技成都有限公司 | Internet of vehicles identity authentication method, system, electronic equipment and medium |
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