CN109495263A - Clock synchronizing method, system, device, intelligent terminal, vehicle termination and medium - Google Patents
Clock synchronizing method, system, device, intelligent terminal, vehicle termination and medium Download PDFInfo
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- CN109495263A CN109495263A CN201811366152.8A CN201811366152A CN109495263A CN 109495263 A CN109495263 A CN 109495263A CN 201811366152 A CN201811366152 A CN 201811366152A CN 109495263 A CN109495263 A CN 109495263A
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- vehicle termination
- correct time
- characteristic information
- signature value
- intelligent terminal
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- 238000000034 method Methods 0.000 title claims abstract description 84
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000012795 verification Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 230000007257 malfunction Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 4
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 17
- 230000015654 memory Effects 0.000 description 31
- 238000010586 diagram Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
- H04L9/0631—Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
Abstract
The embodiment of the invention discloses a kind of clock synchronizing method, system, device, intelligent terminal, vehicle termination and media.This method is applied to intelligent terminal, comprising: obtains the characteristic information of vehicle termination, wherein the characteristic information includes at least: vehicle termination identity information and random number；Receive the signature value of correct time and the characteristic information and the correct time；The correct time and the signature value are sent to vehicle termination.The embodiment of the present invention improves the scalability of method for synchronizing time, versatile, can be operated with preventing malice, improves the synchronous safety of clock.
Description
Technical field
The present embodiments relate to field of communication technology more particularly to a kind of clock synchronizing method, system, device, intelligence
Terminal, vehicle termination and medium.
Background technique
Bluetooth equipment such as intelligent thermos cup or intelligent vehicle etc. need the equipment of correct time in power-off or hardware and software failure
Etc. various extreme conditions triggering reset after, clock will appear it is asynchronous, need again using intelligent terminal for example mobile phone carry out clock it is same
Step.
Currently, mobile phone to bluetooth equipment carry out clock it is synchronous when, time format has been carried out it is customized, if increase or
Person modifies date Hour Minute Second display format, and the sequence of each byte for storage time data will need to rewrite, internal real
Existing logic recompiles needs, and scalability is poor.In addition, sending the access time instruction setting time to bluetooth equipment in mobile phone terminal
When, it is a kind of specific byte sequence, this byte sequence is not easy to understand for a user and operate, do not have general
Property.
Summary of the invention
The embodiment of the present invention provides clock synchronizing method, system, device, intelligent terminal, vehicle termination and medium, solves mesh
It is poor that preceding mobile phone terminal carries out the synchronous mode of clock there are scalabilities to bluetooth equipment, does not have the problem of versatility.
In a first aspect, being applied to intelligent terminal, this method packet the embodiment of the invention provides a kind of clock synchronizing method
It includes:
Obtain vehicle termination characteristic information, wherein the characteristic information includes at least: vehicle termination identity information and with
Machine number；
Receive the signature value of correct time and the characteristic information and the correct time；
The correct time and the signature value are sent to vehicle termination.
Further, the correct time and the signature value are sent to vehicle termination, comprising:
The current time for periodically acquiring vehicle termination matches the current time with correct time, not
The correct time and the signature value are sent to vehicle termination by timing；
Or, the current time of vehicle termination is obtained under preset state, by the current time and correct time progress
Match, when mismatching, the correct time and the signature value be sent to vehicle termination, wherein preset state includes at least:
The malfunction that the state or vehicle connecting for the first time with vehicle termination are interrupted.
Further, the signature value for receiving correct time and characteristic information and correct time, comprising:
Send that characteristic information obtains correct time in server to server and server is believed according to the feature
The signature value that breath is calculated with correct time.
It is further, described that the correct time and the signature value are sent to vehicle termination, comprising:
By the correct time and the signature value composition data packet, serializing operation is carried out to the data packet and obtains sequence
Columnization data；
It is encrypted the serialized data to obtain encryption data；
The encryption data is sent to vehicle termination.
It is further, described that the correct time and the signature value are sent to vehicle termination, comprising:
The correct time and the signature value are sent to vehicle termination by wireless transmission protocol.
Second aspect, the embodiment of the invention provides a kind of clock synchronizing methods, are applied to vehicle termination, this method packet
It includes:
The signal of the acquisition characteristic information of intelligent terminal is received, and the characteristic information is sent to intelligent terminal, wherein
The characteristic information includes at least: vehicle termination identity information and random number；
It receives the data packet that intelligent terminal is sent and parsing is carried out to the data packet and obtain parsing result, wherein data packet
It includes at least: the signature value of correct time and the characteristic information and the correct time；
The verification operation that the signature value is carried out to parsing result, when being verified, according to accurate in parsing result
Time carries out the setting of vehicle termination time.
Further, after the characteristic information is sent to intelligent terminal, further includes:
Start timer and carries out timing；
Correspondingly, after the signature value of parsing result is verified, according to the correct time in parsing result
Before progress vehicle termination time setting, further includes:
Stop the timing of timer, obtains timing, and judge whether the timing size is less than preset time
Size carries out the setting of vehicle termination time according to the correct time in parsing result if being less than.
Further, described that parsing acquisition parsing result is carried out to the data packet, comprising: the vehicle termination is using embedding
Enter formula technology, parsing is carried out to the data packet and obtains parsing result.
Further, the vehicle termination uses embedded technology, carries out parsing to the data packet and obtains parsing result,
Include:
Operation is decrypted to the data packet and obtains ciphertext data；
Unserializing is carried out to the ciphertext data by Protocol Buffer Nano to operate to obtain formatted data；
Extract the correct time and signature value in the format data.
Further, the data packet that intelligent terminal is sent is received, comprising:
The data packet that intelligent terminal is sent is received by wireless transmission protocol.
The third aspect, the embodiment of the invention also provides a kind of clock synchronizing methods, comprising:
Intelligent terminal sends the signal for obtaining characteristic information to vehicle termination；
Vehicle termination receives the signal of the acquisition characteristic information of intelligent terminal, and the characteristic information is sent to intelligent end
End, wherein the characteristic information includes at least: vehicle termination identity information and random number；
Intelligent terminal receives the signature of the correct time that server is sent and the characteristic information and the correct time
Value；
The correct time and the signature value composition data packet are sent to vehicle termination by intelligent terminal；
Vehicle termination, which receives the data packet that intelligent terminal is sent and carries out parsing to the data packet, obtains parsing result；
Vehicle termination carries out the verification operation of the signature value to parsing result, when being verified, according to parsing result
In correct time carry out the setting of vehicle termination time.
Fourth aspect, the embodiment of the invention also provides a kind of clock systems, comprising:
Server, intelligent terminal and vehicle termination, wherein the intelligent terminal accesses the server, and the intelligence is eventually
End is connected with the vehicle termination by wireless transmission protocol.
5th aspect, the embodiment of the invention also provides a kind of clock synchronization apparatus, are applied to intelligent terminal, the device packet
It includes:
Characteristic information obtains module, for obtaining the characteristic information of vehicle termination, wherein the characteristic information at least wraps
It includes: vehicle termination identity information and random number；
Signature value receiving module, for receiving the signature of correct time and the characteristic information and the correct time
Value；
Signature value sending module, for the correct time and the signature value to be sent to vehicle termination.
6th aspect, the embodiment of the invention also provides a kind of clock synchronization apparatus, are applied to vehicle termination, the device packet
It includes:
Characteristic information sending module, the signal of the acquisition characteristic information for receiving intelligent terminal, and the feature is believed
Breath is sent to intelligent terminal, wherein the characteristic information includes at least: vehicle termination identity information and random number；
Resolve packet module, for receiving the data packet of intelligent terminal transmission and carrying out parsing acquisition to the data packet
Parsing result, wherein data packet includes at least: the signature value of correct time and the characteristic information and the correct time；
Parsing result authentication module, for carrying out the verification operation of the signature value to parsing result, when being verified,
The setting of vehicle termination time is carried out according to the correct time in parsing result.
7th aspect, the embodiment of the invention also provides a kind of intelligent terminal, which includes:
One or more processors；
Storage device, for storing one or more programs；
When one or more of programs are executed by one or more of processors, so that one or more of processing
Device realize any embodiment of that present invention provide it is any as described in method for synchronizing time.
Eighth aspect, the embodiment of the invention also provides a kind of vehicle termination, which includes:
One or more processors；
Storage device, for storing one or more programs；
When one or more of programs are executed by one or more of processors, so that one or more of processing
Device realize any embodiment of that present invention provide it is any as described in method for synchronizing time.
9th aspect, the embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer
Program, when which is executed by processor realize as any embodiment of that present invention provide applied to intelligent terminal it is any as described in
Method for synchronizing time.
Tenth aspect, the embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer
Program, when which is executed by processor realize as any embodiment of that present invention provide applied to vehicle termination it is any as described in
Method for synchronizing time.
Clock synchronizing method provided in an embodiment of the present invention is applied to intelligent terminal, by the feature for obtaining vehicle termination
Information, characteristic information include at least: vehicle termination identity information and random number；Receive correct time and characteristic information and accurate
The signature value of time；Correct time and signature value are sent to vehicle termination, the clock that vehicle termination may be implemented is synchronous, improves
Scalability, and clock synchronizing method understands and operates convenient for user, the versatility of clock synchronizing method is improved, using signature
The mode of value can be operated with preventing malice, improve the synchronous safety of clock.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing does one and simply introduces, it should be apparent that, drawings in the following description are some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is a kind of flow diagram for clock synchronizing method that the embodiment of the present invention one provides；
Fig. 2 is a kind of flow diagram of clock synchronizing method provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of flow diagram for clock synchronizing method that the embodiment of the present invention three provides；
Fig. 4 is a kind of structural schematic diagram for clock system that the embodiment of the present invention four provides；
Fig. 5 is a kind of structural schematic diagram for clock synchronization apparatus that the embodiment of the present invention five provides；
Fig. 6 is a kind of structural schematic diagram for clock synchronization apparatus that the embodiment of the present invention six provides；
Fig. 7 is a kind of structural schematic diagram for intelligent terminal that the embodiment of the present invention seven provides；
Fig. 8 is a kind of structural schematic diagram for vehicle termination that the embodiment of the present invention eight provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, hereinafter with reference to attached in the embodiment of the present invention
Figure, clearly and completely describes technical solution of the present invention by embodiment, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of flow chart for clock synchronizing method that the embodiment of the present invention one provides.The technical solution of the present embodiment
It can be adapted for the case where clock of vehicle termination synchronizes, be particularly suitable in the case that vehicle shares function of key starting
Carry out time synchronization.This method can be executed by a kind of clock synchronization apparatus provided in an embodiment of the present invention, which can be with
It is realized by the way of software and/or hardware, and is configured at intelligent terminal such as mobile phone, tablet computer or wearable smart machine
Middle application, wherein wearable smart machine for example can be Intelligent bracelet or smartwatch.This method specifically includes following behaviour
Make:
S110, the characteristic information for obtaining vehicle termination, wherein the characteristic information includes at least: vehicle termination identity letter
Breath and random number.
Intelligent terminal sends solicited message to vehicle termination to obtain the characteristic information of vehicle termination, the feature of vehicle termination
Information for example can be vin (vehicle identification number, vehicle identification number) number, and random number can be 8
Byte.No. vin and random number are sent to intelligent terminal by vehicle termination.Intelligent terminal sends No. vin and random number encryption
To server, server can be to provide the cloud of management service.Cloud decrypts No. vin and random number using private key, and
The signature value for calculating No. vin, random number and current correct time three, hmac (hashing can be used in calculate the signature value
For message authentication, Hash operation message authentication) algorithm, obtained signature value is as current correct time
Signature value.Correct time and signature value are sent to intelligent terminal by cloud.
S120, the signature value for receiving correct time and the characteristic information and the correct time.
Intelligent terminal receives the signature value of the correct time that server is sent and characteristic information and correct time, by bright
The mode of text, is sent to vehicle termination for correct time and signature value composition data packet.Specifically, the reception correct time with
And the signature value of characteristic information and correct time, comprising: when sending characteristic information and obtaining accurate in server to server
Between and the signature value that is calculated according to the characteristic information and correct time of server.Guarantee not usurped in data transmission procedure
Change, in addition can play the role of certification.Has the function of defence for the access of malice.Intelligent terminal connects vehicle end every time
End, vehicle termination can all generate the random number of variation, the signature value of the corresponding variation of the random number of variation.
S130, the correct time and the signature value are sent to vehicle termination.
Optionally, the correct time and the signature value are sent to vehicle termination, comprising: periodically acquire vehicle end
The current time at end matches the current time with correct time, mismatch when, by the correct time with it is described
Signature value is sent to vehicle termination；
Or, the current time of vehicle termination is obtained under preset state, by the current time and correct time progress
Match, when mismatching, the correct time and the signature value be sent to vehicle termination, wherein preset state includes at least:
The malfunction that the state or vehicle connecting for the first time with vehicle termination are interrupted.The malfunction of vehicle termination for example can be vehicle
Wireless module power down, wireless module part exchanging or damage.
Wherein, include: under preset state in vehicle power-off bluetooth module specific position section can be set in broadcast packet,
It is such as set as 0x0b, is set when the 0x0b mark in the broadcast packet that basis receives in Bluetooth of mobile phone scanning connection procedure decides to do the time
Set or do not set operation.If the time had been set and had not powered off, the mark in broadcast packet for specified setting RTC will be protected
It holds as 0x0a.Therefore, mobile phone will not repeat to do the operation of setting RTC to after being arranged mark in scanning.When needing that the time is arranged,
The correct time and the signature value are sent to vehicle termination, wherein preset state includes at least: engine end powers off or it
He causes RTC hardware to be restarted extremely.
It is further, described that the correct time and the signature value are sent to vehicle termination, comprising:
By the correct time and the signature value composition data packet, serializing operation is carried out to the data packet and obtains sequence
Columnization data；It encrypts the serialized data to obtain encryption data；The encryption data is sent to vehicle termination.It is optional
Ground can carry out serializing operation to data packet using Protocol Buffer.Protocol Buffer, Protocol
Buffer is flexible, efficient, the automatic method for structured data sequence, it can be achieved that programming language is unrelated, platform without
The cross-platform data of pass communicates memory module, so that the format of the communication data of vehicle termination and intelligent terminal is flexibly expansible,
Encapsulation is good, and the interface operation data that Protocol Buffer is provided can be used in intelligent terminal and vehicle termination, without concern
Protocol Buffer data low-level details are realized high-efficient.Wherein, encrypting to serialized data can be using symmetrical
Encryption Algorithm or rivest, shamir, adelman, encryption and decryption in symmetric encipherment algorithm are same keys, it is asymmetric plus
Close algorithm has used a pair of secret keys, public key and private key.Faster, rivest, shamir, adelman is safe for symmetric encipherment algorithm encryption/decryption speed
Property is higher.Specifically, when carrying out encryption and decryption using symmetric encipherment algorithm, root can be set in the encryption chip of intelligent terminal
Serialized data is passed to encryption chip and is encrypted using root key, obtains encryption data by key.Illustratively, to close
When the management of key, according to application scenarios and cost budgeting, AES (128) the position CBC encryption of use can have following implemented thinking:
1) soft encryption: the key of both sides' agreement symmetric encipherment algorithm.This mode is realized simply, but key is easy leakage, less pacifies
Entirely.2) hardware encrypts: in the external encryption chip of bluetooth module.Encryption chip built-in key is placed in root key by programming for the first time,
It will not be read, in addition can not be obtained by physics mode, otherwise chip unit damages.Intelligent terminal and vehicle termination use
Similar encryption mechanism carries out the encryption and decryption of data.Business datum is directly packaged into specified by intelligent terminal and vehicle termination both ends
APDU (Application Protocol Data Unit, Application Protocol Data Unit) format be passed to encryption unit both can be with
It obtains, the key storage that such both sides use is the safe mode of comparison inside encryption unit.
It is further, described that the correct time and the signature value are sent to vehicle termination, comprising:
The correct time and the signature value are sent to vehicle termination by wireless transmission protocol.Wherein, wireless to pass
Defeated agreement includes GATT (Generic Attribute Profile, general-purpose attribute agreement), NFC (Near Field
Communication, near field communication (NFC)), RFID (Radio Frequency Identification, radio frequency know
Other technology) or WIFI (Wireless Fidelity, WLAN).Wherein, GATT agreement is bluetooth master and from equipment
The core of data interaction and basis.Bluetooth protocol repertory consists of two parts: control terminal and host.Control terminal and host follow standard
The basic transmission rate of bluetooth or enhanced data transmission rate.This two parts individually works.Intelligent terminal and vehicle
Terminal transimission and storage by way of GATT protocol interaction data are by characteristic value.
Illustratively, vehicle termination is read after receiving the data packet of correct time and signature value of intelligent terminal transmission
The correct time value of the generation in the cloud for including in data packet, it is then according to No. vin of vehicle termination itself storage and random
Number, input of the three as data signature algorithm, the public key stored using vehicle termination safety chip are carried out in verify data packet
Signature value operation, if vehicle termination calculate signature value with receive intelligent terminal transmission signature value it is identical,
Sign test success can be confirmed, carry out time setting according to correct time, reach the synchronization of time.
Clock synchronizing method provided in an embodiment of the present invention is applied to intelligent terminal, by the feature for obtaining vehicle termination
Information, characteristic information include at least: vehicle termination identity information and random number；Receive correct time and characteristic information and accurate
The signature value of time；Correct time and signature value are sent to vehicle termination, the clock that vehicle termination may be implemented is synchronous, improves
Scalability, and clock synchronizing method understands and operates convenient for user, the versatility of clock synchronizing method is improved, using signature
The mode of value can be operated with preventing malice, improve the synchronous safety of clock.
Embodiment two
Fig. 2 is a kind of flow chart of clock synchronizing method provided by Embodiment 2 of the present invention.The technical solution of the present embodiment
It can be adapted for the case where clock of vehicle termination synchronizes.This method can be by a kind of clock provided in an embodiment of the present invention
Synchronizing device executes, which can be realized by the way of software and/or hardware, and be configured in vehicle termination and apply.
This method specifically includes following operation:
Correspondingly, the method for the present embodiment includes:
S210, receive intelligent terminal acquisition characteristic information signal, and the characteristic information is sent to intelligent terminal,
Wherein, the characteristic information includes at least: vehicle termination identity information and random number.
For vehicle termination after receiving the signal of acquisition characteristic information of intelligent terminal, vehicle termination generates random number, and
Vehicle termination identity information is read, vehicle termination identity information can be No. vin, by random number and vehicle termination identity information group
Intelligent terminal is sent at data packet.
S220, the data packet for receiving intelligent terminal transmission simultaneously carry out parsing acquisition parsing result to the data packet, wherein
Data packet includes at least: the signature value of correct time and the characteristic information and the correct time.
The operating system of the vehicle termination can be windows operating system, Linux system or embedded system.It can
Selection of land, it is described that parsing acquisition parsing result is carried out to the data packet, comprising: the vehicle termination uses embedded technology, right
The data packet carries out parsing and obtains parsing result.
Specifically, the vehicle termination uses embedded technology, carries out parsing to the data packet and obtains parsing result, packet
It includes: operation being decrypted to the data packet and obtains ciphertext data；By Protocol Buffer Nano to the decryption number
It operates to obtain formatted data according to unserializing is carried out；Extract the correct time and signature value in the format data.It is exemplary
Ground can be decrypted operation to data packet and be obtained ciphertext data using symmetric encipherment algorithm or rivest, shamir, adelman.In vehicle
Encryption chip in root key can be set, data packet is passed to encryption chip and is decrypted using the root key.In intelligence
Terminal side uses java version or c++ version Protocol Buffer, uses Protocol at vehicle termination end
Buffer Nano, Protocol Buffer Nano is also denoted as nano-protobuf, is the Protocol using Google
Buffer format carry out message encoding and decoding C language library, encoding and decoding interface be it is general, unlike protobuf-c can be each
Structural body in Protocol Buffer is individually created encoding and decoding interface, therefore at the angle of code building size and committed memory
More light weight and easy-to-use from the point of view of degree.The equipment of this for bluetooth module interior resource anxiety is relatively suitble to.
Further, the data packet that intelligent terminal is sent is received, comprising: intelligent terminal hair is received by wireless transmission protocol
The data packet sent.Wherein, wireless transmission protocol includes GATT, NFC, RFID or WIFI.Wherein, GATT agreement is bluetooth master
With the core and basis interacted from device data.Bluetooth protocol repertory consists of two parts: control terminal and host.Control terminal and host
Follow the basic transmission rate of standard bluetooth or enhanced data transmission rate.This two parts individually works.Intelligence
Terminal and vehicle termination transimission and storage by way of GATT protocol interaction data are by characteristic value.
S230, the verification operation that the signature value is carried out to parsing result, when being verified, according in parsing result
Correct time carries out the setting of vehicle termination time.
The data packet that vehicle termination sends intelligent terminal is parsed to obtain parsing result, includes accurate in parsing result
The signature value of time and characteristic information and correct time.Vehicle termination obtains the characteristic information of itself and use and intelligent terminal
Identical calculate the signature value-based algorithm calculates the signature value of characteristic information and correct time, the label sent with the intelligent terminal received
Name value compares, and determines that signature value is verified when the two is identical.
In another optional embodiment of the present invention, after the characteristic information is sent to intelligent terminal, further includes:
Start timer and carries out timing；Correspondingly, after the signature value of parsing result is verified, according in parsing result
Correct time carry out the setting of vehicle termination time before, further includes: stop the timing of timer, obtain timing, and sentence
Whether the timing size of breaking is less than preset time size, if being less than, is carried out according to the correct time in parsing result
The setting of vehicle termination time.In order to which the operation to setting this whole process of time carries out time restriction, i.e., the purpose of this operation is
Time process needs are arranged to complete in the duration of restriction.
Start timer at vehicle termination and start timing, after signature value is verified, stops the timing of timer,
Timing is obtained, when timing is less than preset time, sets correct time to the time of vehicle termination.Wherein, in advance
If the time for example can be in the time range of 1-2s.
Clock synchronizing method provided in an embodiment of the present invention is applied to vehicle termination, receives the acquisition feature of intelligent terminal
The signal of information, and the characteristic information is sent to intelligent terminal, wherein the characteristic information includes at least: vehicle termination
Identity information and random number；It receives the data packet that intelligent terminal is sent and parsing is carried out to the data packet and obtain parsing result,
Wherein data packet includes at least: the signature value of correct time and the characteristic information and the correct time；To parsing result
The verification operation for carrying out the signature value, when being verified, when carrying out vehicle termination according to the correct time in parsing result
Between be arranged, the clock that vehicle termination may be implemented is synchronous, improve scalability, and clock synchronizing method understand convenient for user and
Operation, is improved the versatility of clock synchronizing method, uses the mode of signature value that can be operated with preventing malice, and it is synchronous to improve clock
Safety.
Embodiment three
Fig. 3 is a kind of flow chart for clock synchronizing method that the embodiment of the present invention three provides.The technical solution of the present embodiment
It can be adapted for the case where being configured by clock of the intelligent terminal to vehicle termination, this method is held by clock system
Row.This method specifically includes following operation:
S310, intelligent terminal send the signal for obtaining characteristic information to vehicle termination.
S320, vehicle termination receive the signal of the acquisition characteristic information of intelligent terminal, and the characteristic information is sent to
Intelligent terminal, wherein the characteristic information includes at least: vehicle termination identity information and random number.
S330, intelligent terminal receive the correct time that server is sent and the characteristic information and the correct time
Signature value.
The correct time and the signature value composition data packet are sent to vehicle termination by S340, intelligent terminal.
S350, vehicle termination, which receive the data packet that intelligent terminal is sent and carry out parsing to the data packet, obtains parsing knot
Fruit.
S360, vehicle termination carry out the verification operation of the signature value to parsing result, when being verified, according to parsing
As a result the correct time in carries out the setting of vehicle termination time.
The clock that vehicle termination may be implemented in the embodiment of the present invention is synchronous, improves scalability, and clock synchronizing method
Understand convenient for user and operate, improves the versatility of clock synchronizing method, use the mode of signature value that can grasp with preventing malice
Make, improves the synchronous safety of clock.
Example IV
Fig. 4 is a kind of structural block diagram for clock system that the embodiment of the present invention four provides.The system is for executing
State a kind of clock synchronizing method provided by embodiment one.The system specifically includes:
Server 410, intelligent terminal 420 and vehicle termination 430, wherein the intelligent terminal 420 accesses the server
410, the intelligent terminal 420 is connected with the vehicle termination 430 by wireless transmission protocol.
Wherein, intelligent terminal obtains the characteristic information of vehicle termination, and the characteristic information of the vehicle termination is sent to
Server, server calculate the signature value of characteristic information and correct time, signature value and correct time are sent to intelligent terminal,
Signature value and correct time are sent to vehicle termination by intelligent terminal, and vehicle termination receives signature value and correct time, and vehicle is whole
End calculates the signature value of No. vin of itself storage, random number and correct time three, is matched with the signature value received,
It is arranged after successful match according to the time that correct time carries out vehicle termination.
The clock that vehicle termination may be implemented in clock system provided in an embodiment of the present invention is synchronous, improves expansible
Property, and the clock synchronizing method that clock system executes understands and operates convenient for user, improves the logical of clock synchronizing method
It with property, uses the mode of signature value that can operate with preventing malice, improves the synchronous safety of clock.
Embodiment five
Fig. 5 is a kind of structural block diagram for clock synchronization apparatus that the embodiment of the present invention five provides.The device is for executing
State a kind of clock synchronizing method provided by embodiment one.The device is applied to intelligent terminal, comprising:
Characteristic information obtains module 510, for obtaining the characteristic information of vehicle termination, wherein the characteristic information is at least
It include: vehicle termination identity information and random number；
Signature value receiving module 520, for receiving the label of correct time and the characteristic information and the correct time
Name value；
Signature value sending module 530, for the correct time and the signature value to be sent to vehicle termination.
Further, the signature value sending module, is specifically used for:
The current time for periodically acquiring vehicle termination matches the current time with correct time, not
The correct time and the signature value are sent to vehicle termination by timing；
Or, the current time of vehicle termination is obtained under preset state, by the current time and correct time progress
Match, when mismatching, the correct time and the signature value be sent to vehicle termination, wherein preset state includes at least:
The malfunction that the state or vehicle connecting for the first time with vehicle termination are interrupted.
Further, the signature value receiving module, is specifically used for:
Send that characteristic information obtains correct time in server to server and server is believed according to the feature
The signature value that breath is calculated with correct time.
Further, the signature value sending module, is specifically also used to:
By the correct time and the signature value composition data packet, serializing operation is carried out to the data packet and obtains sequence
Columnization data；
It is encrypted the serialized data to obtain encryption data；
The encryption data is sent to vehicle termination.
Further, the signature value sending module, is specifically also used to:
The correct time and the signature value are sent to vehicle termination by wireless transmission protocol.
The clock synchronization apparatus that the embodiment of the present invention five provides improves scalability, versatile, can be grasped with preventing malice
Make, improves the synchronous safety of clock.
It is synchronous that clock provided by the embodiment of the present invention one can be performed in clock synchronization apparatus provided by the embodiment of the present invention
Method has the corresponding functional module of execution method and beneficial effect.
Embodiment six
Fig. 6 is a kind of structural block diagram for clock synchronization apparatus that the embodiment of the present invention six provides.The device is for executing
State a kind of clock synchronizing method provided by embodiment two.The device is applied to vehicle termination, comprising:
Characteristic information sending module 610, the signal of the acquisition characteristic information for receiving intelligent terminal, and by the feature
Information is sent to intelligent terminal, wherein the characteristic information includes at least: vehicle termination identity information and random number；
Resolve packet module 620, for receiving the data packet of intelligent terminal transmission and being parsed to the data packet
Parsing result is obtained, wherein data packet includes at least: the signature of correct time and the characteristic information and the correct time
Value；
Parsing result authentication module 630 is being verified for carrying out the verification operation of the signature value to parsing result
When, the setting of vehicle termination time is carried out according to the correct time in parsing result.
Further, which further includes timing module, for after the characteristic information is sent to intelligent terminal,
Start timer and carries out timing；
Correspondingly, which further includes time judgment module, is verified it for the signature value in parsing result
Afterwards, before carrying out the setting of vehicle termination time according to the correct time in parsing result, stop the timing of timer, it is fixed to obtain
When the time, and judge whether the timing size is less than preset time size, if being less than, according to the standard in parsing result
The true time carries out the setting of vehicle termination time.
Further, the resolve packet module, comprising: embedded unit is specifically used for using embedded technology, right
The data packet carries out parsing and obtains parsing result.
Further, the embedded unit is specifically used for:
Operation is decrypted to the data packet and obtains ciphertext data；
Unserializing is carried out to the ciphertext data by Protocol Buffer Nano to operate to obtain formatted data；
Extract the correct time and signature value in the format data.
Further, resolve packet module is specifically used for:
The data packet that intelligent terminal is sent is received by wireless transmission protocol.
The clock synchronization apparatus that the embodiment of the present invention six provides improves scalability, versatile, can be grasped with preventing malice
Make, improves the synchronous safety of clock.
It is synchronous that clock provided by the embodiment of the present invention two can be performed in clock synchronization apparatus provided by the embodiment of the present invention
Method has the corresponding functional module of execution method and beneficial effect.
Embodiment seven
Fig. 7 is a kind of structural schematic diagram for intelligent terminal that the embodiment of the present invention seven provides, as shown in fig. 7, the intelligence is eventually
End includes processor 70, memory 71, input unit 72 and output device 73；The quantity of processor 70 can be in intelligent terminal
One or more, in Fig. 7 by taking a processor 70 as an example；Processor 70, memory 71,72 and of input unit in intelligent terminal
Output device 73 can be connected by bus or other modes, in Fig. 7 for being connected by bus.
Memory 71 is used as a kind of computer readable storage medium, can be used for storing software program, journey can be performed in computer
Sequence and module, if the corresponding program instruction/module of clock synchronizing method in the embodiment of the present invention one is (for example, characteristic information
Obtain module 510, signature value receiving module 520 and signature value sending module 530).Processor 70 is stored in storage by operation
Software program, instruction and module in device 71, thereby executing the various function application and data processing of intelligent terminal, i.e., in fact
Existing above-mentioned clock synchronizing method.
Memory 71 mainly include storing program area and storage data area, wherein storing program area can storage program area,
Application program needed at least one function；Storage data area, which can be stored, uses created data etc. according to intelligent terminal.
It can also include nonvolatile memory in addition, memory 71 may include high-speed random access memory, for example, at least one
Disk memory, flush memory device or other non-volatile solid state memory parts.In some instances, memory 71 can be into one
Step includes the memory remotely located relative to processor 70, these remote memories can pass through network connection to intelligent end
End.The example of above-mentioned network includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
Input unit 72 can be used for receiving the number or character information of input, and generate with the user setting of equipment and
The related key signals input of function control.Output device 73 may include that display screen etc. shows equipment.
Embodiment eight
Fig. 8 is a kind of structural schematic diagram for vehicle termination that the embodiment of the present invention eight provides, as shown in figure 8, the vehicle is whole
End includes processor 80, memory 81, input unit 82 and output device 83；The quantity of processor 80 can be in vehicle termination
One or more, in Fig. 8 by taking a processor 80 as an example；Processor 80, memory 81,82 and of input unit in vehicle termination
Output device 83 can be connected by bus or other modes, in Fig. 8 for being connected by bus.
Memory 81 is used as a kind of computer readable storage medium, can be used for storing software program, journey can be performed in computer
Sequence and module, if the corresponding program instruction/module of clock synchronizing method in the embodiment of the present invention two is (for example, characteristic information
Sending module 610, resolve packet module 620 and parsing result verification module 630).Processor 80 is stored in by operation
Software program, instruction and module in reservoir 81, thereby executing the various function application and data processing of vehicle termination, i.e.,
Realize above-mentioned clock synchronizing method.
Memory 81 mainly include storing program area and storage data area, wherein storing program area can storage program area,
Application program needed at least one function；Storage data area, which can be stored, uses created data etc. according to terminal.In addition,
Memory 81 may include high-speed random access memory, can also include nonvolatile memory, for example, at least a disk
Memory device, flush memory device or other non-volatile solid state memory parts.In some instances, memory 81 can be wrapped further
The memory remotely located relative to processor 80 is included, these remote memories can pass through network connection to equipment.Above-mentioned net
The example of network includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
Input unit 82 can be used for receiving the number or character information of input, and generate with the user setting of equipment and
The related key signals input of function control.Output device 83 may include that display screen etc. shows equipment.
Embodiment nine
The embodiment of the present invention nine also provides a kind of storage medium comprising computer executable instructions, and the computer can be held
Row instruction is used to execute a kind of clock synchronizing method when being executed by computer processor, this method comprises:
Obtain vehicle termination characteristic information, wherein the characteristic information includes at least: vehicle termination identity information and with
Machine number；
Receive the signature value of correct time and the characteristic information and the correct time；
The correct time and the signature value are sent to vehicle termination.
Certainly, a kind of storage medium comprising computer executable instructions, computer provided by the embodiment of the present invention
The method operation that executable instruction is not limited to the described above, can also be performed the clock side of synchronization provided by the embodiment of the present invention one
Relevant operation in method.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to which by hardware realization, but in many cases, the former is more
Good embodiment.Based on this understanding, technical solution of the present invention substantially in other words contributes to the prior art
Part can be embodied in the form of software products, which can store in computer readable storage medium
In, floppy disk, read-only memory (Read-Only Memory, ROM), random access memory (Random such as computer
Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are with so that a computer is set
Standby (can be personal computer, server or the network equipment etc.) executes method described in each embodiment of the present invention.
Embodiment ten
The embodiment of the present invention ten also provides a kind of storage medium comprising computer executable instructions, and the computer can be held
Row instruction is used to execute a kind of clock synchronizing method when being executed by computer processor, this method comprises:
The signal of the acquisition characteristic information of intelligent terminal is received, and the characteristic information is sent to intelligent terminal, wherein
The characteristic information includes at least: vehicle termination identity information and random number；
It receives the data packet that intelligent terminal is sent and parsing is carried out to the data packet and obtain parsing result, wherein data packet
It includes at least: the signature value of correct time and the characteristic information and the correct time；
The verification operation that the signature value is carried out to parsing result, when being verified, according to accurate in parsing result
Time carries out the setting of vehicle termination time.
Certainly, a kind of storage medium comprising computer executable instructions, computer provided by the embodiment of the present invention
The method operation that executable instruction is not limited to the described above, can also be performed the clock side of synchronization provided by the embodiment of the present invention one
Relevant operation in method.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to which by hardware realization, but in many cases, the former is more
Good embodiment.Based on this understanding, technical solution of the present invention substantially in other words contributes to the prior art
Part can be embodied in the form of software products, which can store in computer readable storage medium
In, floppy disk, read-only memory (Read-Only Memory, ROM), random access memory (Random such as computer
Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are with so that a computer is set
Standby (can be personal computer, server or the network equipment etc.) executes method described in each embodiment of the present invention.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (18)
1. a kind of clock synchronizing method, which is characterized in that be applied to intelligent terminal, comprising:
Obtain the characteristic information of vehicle termination, wherein the characteristic information includes at least: vehicle termination identity information and random
Number；
Receive the signature value of correct time and the characteristic information and the correct time；
The correct time and the signature value are sent to vehicle termination.
2. the method according to claim 1, wherein the correct time and the signature value are sent to vehicle
Terminal, comprising:
The current time for periodically acquiring vehicle termination matches the current time with correct time, when mismatching,
The correct time and the signature value are sent to vehicle termination；
Or, obtaining the current time of vehicle termination under preset state, the current time is matched with correct time,
When mismatching, the correct time and the signature value are sent to vehicle termination, wherein preset state includes at least: for the first time
The malfunction that the state or vehicle connecting with vehicle termination are interrupted.
3. the method according to claim 1, wherein the reception correct time and characteristic information and it is accurate when
Between signature value, comprising:
Send characteristic information obtained to server correct time in server and server according to the characteristic information with
The signature value that correct time calculates.
4. the method according to claim 1, wherein described be sent to the correct time and the signature value
Vehicle termination, comprising:
By the correct time and the signature value composition data packet, serializing operation is carried out to the data packet and is serialized
Data；
It is encrypted the serialized data to obtain encryption data；
The encryption data is sent to vehicle termination.
5. method according to claim 1-4, which is characterized in that described by the correct time and the signature
Value is sent to vehicle termination, comprising:
The correct time and the signature value are sent to vehicle termination by wireless transmission protocol.
6. a kind of clock synchronizing method, which is characterized in that be applied to vehicle termination, comprising:
The signal of the acquisition characteristic information of intelligent terminal is received, and the characteristic information is sent to intelligent terminal, wherein is described
Characteristic information includes at least: vehicle termination identity information and random number；
It receives the data packet that intelligent terminal is sent parsing simultaneously is carried out to the data packet and obtain parsing result, wherein data packet is at least
It include: the signature value of correct time and the characteristic information and the correct time；
The verification operation that the signature value is carried out to parsing result, when being verified, according to the correct time in parsing result
Carry out the setting of vehicle termination time.
7. according to the method described in claim 6, it is characterized in that, after the characteristic information is sent to intelligent terminal,
Further include:
Start timer and carries out timing；
Correspondingly, it after the signature value of parsing result is verified, is carried out according to the correct time in parsing result
Before the setting of vehicle termination time, further includes:
Stop the timing of timer, obtain timing, and judge whether the timing size is less than preset time size,
If being less than, the setting of vehicle termination time is carried out according to the correct time in parsing result.
8. according to the method described in claim 6, it is characterized in that, described carry out parsing acquisition parsing knot to the data packet
Fruit, comprising: the vehicle termination uses embedded technology, carries out parsing to the data packet and obtains parsing result.
9. according to the method described in claim 8, it is characterized in that, the vehicle termination uses embedded technology, to the number
Parsing, which is carried out, according to packet obtains parsing result, comprising:
Operation is decrypted to the data packet and obtains ciphertext data；
Unserializing is carried out to the ciphertext data by Protocol Buffer Nano to operate to obtain formatted data；
Extract the correct time and signature value in the format data.
10. the method according to claim 6, which is characterized in that receive the data packet that intelligent terminal is sent, packet
It includes:
The data packet that intelligent terminal is sent is received by wireless transmission protocol.
11. a kind of clock synchronizing method characterized by comprising
Intelligent terminal sends the signal for obtaining characteristic information to vehicle termination；
Vehicle termination receives the signal of the acquisition characteristic information of intelligent terminal, and the characteristic information is sent to intelligent terminal,
Wherein, the characteristic information includes at least: vehicle termination identity information and random number；
Intelligent terminal receives the signature value of the correct time that server is sent and the characteristic information and the correct time；
The correct time and the signature value composition data packet are sent to vehicle termination by intelligent terminal；
Vehicle termination, which receives the data packet that intelligent terminal is sent and carries out parsing to the data packet, obtains parsing result；
Vehicle termination carries out the verification operation of the signature value to parsing result, when being verified, according in parsing result
Correct time carries out the setting of vehicle termination time.
12. a kind of clock system characterized by comprising
Server, intelligent terminal and vehicle termination, wherein the intelligent terminal accesses the server, the intelligent terminal with
The vehicle termination is connected by wireless transmission protocol.
13. a kind of clock synchronization apparatus, which is characterized in that be applied to intelligent terminal, comprising:
Characteristic information obtains module, for obtaining the characteristic information of vehicle termination, wherein the characteristic information includes at least: vehicle
Terminal identity information and random number；
Signature value receiving module, for receiving the signature value of correct time and the characteristic information and the correct time；
Signature value sending module, for the correct time and the signature value to be sent to vehicle termination.
14. a kind of clock synchronization apparatus, which is characterized in that be applied to vehicle termination, comprising:
Characteristic information sending module, the signal of the acquisition characteristic information for receiving intelligent terminal, and the characteristic information is sent out
It send to intelligent terminal, wherein the characteristic information includes at least: vehicle termination identity information and random number；
Resolve packet module, for receiving the data packet of intelligent terminal transmission and parsed to the data packet
As a result, wherein data packet includes at least: the signature value of correct time and the characteristic information and the correct time；
Parsing result authentication module, for carrying out the verification operation of the signature value to parsing result, when being verified, according to
Correct time in parsing result carries out the setting of vehicle termination time.
15. a kind of intelligent terminal characterized by comprising
One or more processors；
Storage device, for storing one or more programs；
When one or more of programs are executed by one or more of processors, so that one or more of processors are real
Now such as method for synchronizing time as claimed in any one of claims 1 to 5.
16. a kind of vehicle termination characterized by comprising
One or more processors；
Storage device, for storing one or more programs；
When one or more of programs are executed by one or more of processors, so that one or more of processors are real
The now method for synchronizing time as described in any in claim 6-10.
17. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
Such as method for synchronizing time as claimed in any one of claims 1 to 5 is realized when execution.
18. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
The method for synchronizing time as described in any in claim 6-10 is realized when execution.
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