CN105897784A - Internet of things terminal equipment encryption communication method and device - Google Patents
Internet of things terminal equipment encryption communication method and device Download PDFInfo
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- CN105897784A CN105897784A CN201610512562.3A CN201610512562A CN105897784A CN 105897784 A CN105897784 A CN 105897784A CN 201610512562 A CN201610512562 A CN 201610512562A CN 105897784 A CN105897784 A CN 105897784A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/083—Network architectures or network communication protocols for network security for authentication of entities using passwords
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
- H04L63/104—Grouping of entities
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Abstract
The invention discloses an internet of things terminal equipment encryption communication method and device. A specific embodiment of the method comprises the steps of receiving a login request sent by terminal equipment, registering the terminal equipment, obtaining a feature code of the terminal equipment, grouping successfully-registered terminal equipment according to the access right of the terminal equipment, generating group keys for each terminal equipment group, calculating out a group construction code of each terminal equipment group according to the group key of the terminal equipment group and terminal equipment feature codes of all terminal equipment in the terminal equipment group and sending the calculated group construction codes to all the terminal equipment in the terminal equipment group. The embodiment provides a method for establishing group keys for internet of things multi-terminal equipment, can safely and efficiently achieve secret communication in an interacting environment of the internet of things multi-terminal equipment and can enable equipment authority management to be safer and more flexible.
Description
Technical field
The application relates to technology of Internet of things field, is specifically related to Internet of Things security technology area, especially
It relates to internet-of-things terminal equipment encryption communication method and device.
Background technology
Internet of Things refers to by various information sensing equipment, and any needs of Real-time Collection monitors, even
Connect, the information of the various needs such as interactive object or process, is combined one of formation with the Internet
Huge network.Its objective is the connection realizing thing with thing, thing and people, all of article and network,
Conveniently identify, manage and control.
The development of Internet of Things drastically increases work efficiency and various convenience really, but also deposits
Equipment at many safety risks, such as unauthenticated accesses, information transmission between equipment
Confidentiality, these all become the node that hacker can utilize easily, control in Smart Home
Gate inhibition, air-conditioning, humidifier and running water system and power system.
Summary of the invention
The purpose of the application is to propose a kind of internet-of-things terminal equipment encryption communication method and device,
Solve the technical problem that background section above is mentioned.
First aspect, this application provides a kind of internet-of-things terminal equipment encryption communication method, institute
The method of stating includes: receiving terminal apparatus send registration request and register described terminal unit；Obtain
Obtain the condition code of described terminal unit；Access rights according to terminal unit will succeed in registration
Each terminal unit be grouped, and be each terminal unit group generate group key；For often
Individual terminal unit group, each according in the group key of this terminal unit group and this terminal unit group
The Terminal Equipments characteristics yardage of terminal unit calculates the set constructor code of this terminal unit group；To be counted
The set constructor code calculated is sent to each terminal unit in this terminal unit group, wherein, each
The terminal unit condition code of described set constructor code He this terminal unit calculates group key for often
Coded communication between terminal unit.
In certain embodiments, the condition code of the described terminal unit of described acquisition, including: receive
The condition code of the described terminal unit that described terminal unit sends.
In certain embodiments, the condition code of the described terminal unit of described acquisition, including: according to
The mode preset generates the condition code of described terminal unit and is sent to described terminal unit.
In certain embodiments, described for each terminal unit group generate group key, including: for
Each terminal unit group generates random key.
In certain embodiments, described for each terminal unit group generate group key, including: from
The pool of keys generated chooses key for each terminal unit group.
In certain embodiments, described group key is generated for each terminal unit group, including root
Carry out temporarily or periodically key updating according to default key updating mode.
In certain embodiments, described the set constructor code calculated is sent to this terminal unit
Each terminal unit in group, including: calculate the message error detection code of described set constructor code and with private
Key sends jointly to each terminal in this terminal unit group with described set constructor code after signing
Equipment.
Second aspect, this application provides a kind of internet-of-things terminal equipment encryption communication method, institute
The method of stating includes: send registration request to Internet of Things control centre；Obtain the feature of terminal unit
Code；Receive the set constructor code that Internet of Things control centre sends；Feature according to described terminal unit
Code and described set constructor yardage calculate the group key of the terminal unit group at described terminal unit place,
Wherein, the terminal unit Zu Shi Internet of Things control centre at described terminal unit place sets according to terminal
The terminal unit group that standby access rights divide；Use described group key and described terminal unit group
Interior terminal unit is encrypted communication.
In certain embodiments, the condition code of described acquisition terminal unit, including: receive described
The condition code of the described terminal unit that Internet of Things control centre sends.
In certain embodiments, the condition code of described acquisition terminal unit, including: will deposit in advance
The condition code of the described terminal unit of storage is sent to described Internet of Things control centre.
In certain embodiments, the set constructor code that described reception Internet of Things control centre sends, bag
Include: utilize the Message Authentication Code received and signature that set constructor code is carried out information authentication and identity
Certification.
In certain embodiments, the described group key of described use and the end in described terminal unit group
End equipment is encrypted communication, including: data send terminal unit using described group key as adding
Decryption key, uses the AES preset to be encrypted communication data；Described data send eventually
Encrypted data are sent to data receiving terminal equipment by end equipment；Described data receiving terminal
Described group key as decruption key, is used decipherment algorithm encrypted by receive by equipment
Data are decrypted and then obtain communication data, and wherein, decipherment algorithm is consistent with AES.
In certain embodiments, described default AES includes Advanced Encryption Standard or triple
DEA.
In certain embodiments, encrypted data are sent to by described data transmission terminal unit
Data receiving terminal equipment, including: described data send terminal unit by encrypted data acquisition
It is sent to data receiving terminal equipment with broadcast mode in group, or uses bulletin board mode to be sent to
Data receiving terminal equipment.
The third aspect, this application provides a kind of internet-of-things terminal equipment coded communication device, institute
State device to include: registering unit, be configured to the registration request of receiving terminal apparatus transmission and note
The described terminal unit of volume；Condition code acquiring unit, is configured to obtain the spy of described terminal unit
Levy code；Key generating unit, being configured to the access rights according to terminal unit will register
Successful each terminal unit is grouped, and is that each terminal unit group generates group key；Structure
Make a yard signal generating unit, be configured to for each terminal unit group, according to this terminal unit group
The Terminal Equipments characteristics yardage of each terminal unit in group key and this terminal unit group calculates this
The set constructor code of terminal unit group；Transmitting element, is configured to the set constructor code that will be calculated
Being sent to each terminal unit in this terminal unit group, wherein, each terminal unit is with described
The condition code of set constructor code and this terminal unit calculates group key and encrypts between every terminal unit
Communication.
In certain embodiments, described condition code acquiring unit is configured to further: receive institute
State the condition code of the described terminal unit that terminal unit sends.
In certain embodiments, described condition code acquiring unit is configured to further: according in advance
If mode generate the condition code of described terminal unit and be sent to described terminal unit.
In certain embodiments, described Key generating unit is configured to further: for each end
End equipment group generates random key.
In certain embodiments, described Key generating unit is configured to further: from having given birth to
The pool of keys become chooses key for each terminal unit group.
In certain embodiments, described Key generating unit is configured to further: according to presetting
Key updating mode carry out temporarily or periodically key updating.
In certain embodiments, described transmitting element is configured to further: calculate described group of structure
This is sent jointly to described set constructor code after making the message error detection code of code and signing with private key
Each terminal unit in terminal unit group.
Fourth aspect, this application provides a kind of internet-of-things terminal equipment coded communication device, institute
Stating device to include: registration request unit, being configured to send registration to Internet of Things control centre please
Ask；Condition code memory element, is configured to obtain the condition code of terminal unit；Receive unit,
It is configured to receive the set constructor code that Internet of Things control centre sends；Key calculation unit, configuration
Described terminal unit is calculated for the condition code according to described terminal unit and described set constructor yardage
The group key of the terminal unit group at place, wherein, the terminal unit group at described terminal unit place
It it is the Internet of Things control centre terminal unit group according to the access rights division of terminal unit；Communication
Unit, is configured to use described group key to carry out with the terminal unit in described terminal unit group
Coded communication.
In certain embodiments, described condition code memory element is configured to further: receive institute
State the condition code of the described terminal unit that Internet of Things control centre sends.
In certain embodiments, described condition code memory element is configured to further: will in advance
The condition code of the described terminal unit of storage is sent to described Internet of Things control centre.
In certain embodiments, described reception unit is configured to further: utilization receives
Message Authentication Code and signature carry out information authentication and authentication to set constructor code.
In certain embodiments, described communication unit is configured to further: data send terminal
Described group key as encryption key, is used the AES preset to enter communication data by equipment
Row encryption；Described data send terminal unit and encrypted data are sent to data receiving terminal
Equipment；Described group key as decruption key, is used deciphering by described data receiving terminal equipment
The encrypted data received are decrypted and then obtain communication data by algorithm, wherein, solve
Close algorithm is consistent with AES.
In certain embodiments, described default AES includes Advanced Encryption Standard or triple
DEA.
In certain embodiments, encrypted data are sent to by described data transmission terminal unit
Data receiving terminal equipment, including: described data send terminal unit by encrypted data acquisition
It is sent to data receiving terminal equipment with broadcast mode in group, or uses bulletin board mode to be sent to
Data receiving terminal equipment.
The internet-of-things terminal equipment encryption communication method of the application offer and device, by using terminal
In the group key of equipment group and group, the condition code of each terminal unit generates the group structure of this terminal unit group
Making code, this set constructor code is sent to organize interior terminal unit, in group, each terminal unit utilizes the most eventually
The condition code of end equipment and set constructor yardage calculate the key of coded communication between the interior terminal unit of group,
Thus realize being encrypted efficiently communication and control extension in multi-terminal equipment interactive environment, with
Resist illegal control and illegally obtaining user profile that internet-of-things terminal equipment is carried out by hacker.
Accompanying drawing explanation
The detailed description that non-limiting example is made made with reference to the following drawings by reading,
Other features, purpose and advantage will become more apparent upon:
Fig. 1 is that the application can apply to exemplary system architecture figure therein；
Fig. 2 is an embodiment of the internet-of-things terminal equipment encryption communication method according to the application
Flow chart；
Fig. 3 is an applied field of the internet-of-things terminal equipment encryption communication method according to the application
The schematic diagram of scape；
Fig. 4 is another enforcement of the internet-of-things terminal equipment encryption communication method according to the application
The flow chart of example；
Fig. 5 is an embodiment of the internet-of-things terminal equipment coded communication device according to the application
Structural representation；
Fig. 6 is another enforcement of the internet-of-things terminal equipment coded communication device according to the application
The structural representation of example；
Fig. 7 is adapted for the terminal unit for realizing the embodiment of the present application or Internet of Things control centre
The structural representation of computer system.
Detailed description of the invention
With embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It is appreciated that
, specific embodiment described herein is used only for explaining related invention, rather than to this
Bright restriction.It also should be noted that, for the ease of describe, accompanying drawing illustrate only with
About the part that invention is relevant.
It should be noted that in the case of not conflicting, the embodiment in the application and embodiment
In feature can be mutually combined.Describe this below with reference to the accompanying drawings and in conjunction with the embodiments in detail
Application.
Fig. 1 shows internet-of-things terminal equipment encryption communication method or the thing that can apply the application
The exemplary system architecture 100 of the embodiment of networked terminals equipment coded communication device.
As it is shown in figure 1, system architecture 100 can include terminal unit 101,102,103,
Network 104 and server 105.Network 104 is in order at terminal unit 101,102,103 and
The medium of communication link is provided between server 105.Network 104 can include various connection class
Type, the most wired, wireless communication link or fiber optic cables etc..
User can use terminal unit 101,102,103 by network 104 and server 105
Alternately, to receive or to send message etc..Terminal unit 101,102,103 is typically felt by periphery
Know (sensing) interface, central processing module and external communication interface three part composition, by outward
Enclose perception interface to be connected with sensing equipment, as RFID (Radio Frequency Identification,
Radio frequency identification) card reader, infrared inductor, environmental sensor etc., these sensings are set
After standby data are read out and are processed by central processing module, according to procotol, pass through
External communication interface, such as: the modes such as GPRS module, Ethernet interface, WIFI be sent to
The Internet of Things control centre netted very much.
Terminal unit 101,102,103 can be that the various electronics with network communicating function set
Standby, include but not limited to smart mobile phone, refrigerator, TV, panel computer, portable meter on knee
Calculation machine and desk computer etc..
Server 105 can be to provide the server of various service, such as to terminal unit 101,
Between 102 and 103, communication provides the Internet of Things control centre server supported.Internet of Things controls
The data such as the terminal unit registration request received can be analyzed waiting and process by central server,
And result (such as terminal unit set constructor code) is fed back to terminal unit.Terminal unit
Calculate group key according to this structure yardage and encrypt logical in terminal unit group between each terminal unit
Letter.
It should be noted that the internet-of-things terminal equipment coded communication that the embodiment of the present application is provided
Method is typically performed by server 105 and terminal unit 101,102,103, correspondingly, and thing
Networked terminals equipment coded communication device be generally positioned at server 105 and terminal unit 101,
102, in 103.
It should be understood that the number of terminal unit, network and the server in Fig. 1 is only signal
Property.According to realizing needs, can have any number of terminal unit, network and server.
With continued reference to Fig. 2, it is shown that according to the internet-of-things terminal equipment coded communication side of the application
The flow process 200 of one embodiment of method.Described internet-of-things terminal equipment encryption communication method,
Comprise the following steps:
Step 201, the registration request of receiving terminal apparatus transmission registering terminal equipment.
In the present embodiment, internet-of-things terminal equipment encryption communication method runs on electronics thereon
Equipment (the such as server shown in Fig. 1) can be by wired connection mode or wireless connections
Mode receives registration request from terminal unit, and server will be according to presetting after receiving registration request
Access control policy judge whether to accept the registration request of this equipment, if accept, then notify
Facility registration success, otherwise, notice facility registration failure.
Step 202, it is thus achieved that the condition code of terminal unit.
In the present embodiment, equipment condition code is to be consulted by terminal unit and Internet of Things control centre
Be calculated.Equipment condition code can also be unilaterally independent by equipment or Internet of Things control centre
Generate and notify to the other side.This step can use following method carry out described equipment condition code
Generation and transmission:
Such as, terminal unit U is after Internet of Things control centre successful registration, during Internet of Things controls
The heart is that terminal unit U issues certified digital certificate CertU, X.509 certificate format as marked
Accurate.Internet of Things control centre is that terminal unit U generates random field S1, and use CertU
In public key encryption, with Internet of Things control centre digital certificate CertCPrivate key signature, be sent to
Terminal unit U.Terminal unit U generates random field S2, and use CertCPKI add
Close, use CertUPrivate key signature, is sent to Internet of Things control centre.Terminal unit U and Internet of Things
Net control centre deciphers with the private key in oneself digital certificate, tests with the PKI of the other side's certificate respectively
After card, obtain two fields S1And S2, and then calculate the equipment condition code of terminal unit U
For CodeU=S1XOR S2。
In some optional implementations of the present embodiment, can receiving terminal apparatus send end
The condition code of end equipment.Terminal unit can send to server when registration simultaneously and be pre-stored in
Condition code in terminal unit.Such as, for low configuration equipment, such as intelligent electric lamp, sensor
Nodes etc., Terminal Equipments characteristics code can store in terminal unit by the way of preset.
In some optional implementations of the present embodiment, terminal can be generated according to default mode
The condition code of equipment is also sent to this terminal unit.Such as, for hand-hold mobile device, such as intelligence
Energy phones etc., Terminal Equipments characteristics code can configure by the way of password matches.
Step 203, sets each terminal succeeded in registration according to the access rights of terminal unit
For being grouped, and it is that each terminal unit group generates group key.
In the present embodiment, if terminal unit is provided simultaneously with following two condition: one, this sets
The standby heart in the controlling succeeds in registration, and is currently in term of validity；Two, this equipment is current
It is divided in certain device packets and possesses the authority accessing some resource, then this equipment is permissible
Utilize the set constructor code received and the equipment condition code of oneself, construct the shared group of this group
Key.Therefore, by set constructor code can control certain equipment whether possess acquisition group key and then
To the ability of communication in enciphering/deciphering group.
In some optional implementations of the present embodiment, can be that each terminal unit group is raw
Become random key.
In some optional implementations of the present embodiment, can be from the pool of keys generated
Key is chosen for each terminal unit group.
In some optional implementations of the present embodiment, can be according to default key updating side
Formula is carried out temporarily or periodically key updating.Such as, the electrical equipment for homebrew can be arranged
Becoming monthly to update a secondary key, the Internet of Things household electrical appliance for hotel room can be when tenant moves in
More new key.
Step 204, for each terminal unit group, according to the group key of this terminal unit group and
The Terminal Equipments characteristics yardage of each terminal unit in this terminal unit group calculates this terminal unit
The set constructor code of group.
In the present embodiment, Internet of Things control centre can to use existing various modes, in conjunction with
Group key and the equipment condition code of this group entirety terminal unit, calculate set constructor code.
In some optional implementations of the present embodiment, based on Lagrange interpolation polynomial meter
Calculating the set constructor code of this terminal unit group, concrete process is as follows:
Total t station terminal equipment in assuming the packet of a certain terminal unit, wherein, t is natural number.Thing
The group key that networking control center will generate in the equipment condition code of this t station terminal equipment and step 203
Be converted to two-dimensional coordinate value form, and utilize this t+1 coordinate figure one t rank Lagrange of structure many
Item formula f (x), arbitrarily chooses t coordinate points afterwards on this lagrange polynomial, and by this t
Coordinate figure is sent to the equipment in packet as this set constructor code.T the coordinate that equipment utilization receives
Value (set constructor code) and the equipment condition code of self, restructural goes out this t rank lagrange polynomial f (x)
And obtain group key.Specifically, equipment condition code can be converted to two-dimensional coordinate value by the following method:
CodeU→(CodeU, hash (CodeU)), wherein, abscissa CodeUIt is equipment condition code,
Vertical coordinate hash (CodeU) it is by CodeUCarry out the coordinate figure that hash functional transformation obtains, organize close
Key can be converted to two-dimensional coordinate value: Key by the following methodG→ (0, KeyG).Wherein, horizontal seat
Mark is 0, and vertical coordinate is group key KeyG.From Lagrange's interpolation principle, put down through two dimension
On face, t+1 point can determine that unique t rank Lagrange interpolation polynomial, therefore, and Internet of Things network control
The multinomial that center processed and terminal unit construct respectively is unique, the most identical.Therefore, when
After terminal unit constructs t rank lagrange polynomial f (x), just obtaining group key is KeyG=f (0).
In some optional implementations of the present embodiment, disappearing of described set constructor code can be calculated
This terminal unit group is sent jointly to described set constructor code after ceasing check code and signing with private key
Interior each terminal unit.
Step 205, be sent in this terminal unit group by the set constructor code calculated is each
Terminal unit.
In the present embodiment, Internet of Things control centre sends set constructor to this group entirety terminal unit
Code, the mode of transmission can be broadcast, bulletin board etc. in group, when there being multiple equipment in group, also
Only need to calculate 1 time, send 1 time.
It is the internet-of-things terminal equipment coded communication side according to the present embodiment with continued reference to Fig. 3, Fig. 3
One schematic diagram of the application scenarios of method.In the application scenarios of Fig. 3, Internet of Things coded communication
System 300 includes Internet of Things control centre 310 and terminal unit group 320.Terminal unit group 320
Including equipment 301, equipment 302 and equipment 303.Equipment 301, equipment 302 and equipment 303
Registration request and equipment condition code, Internet of Things control centre is sent to Internet of Things control centre 310
After equipment 301, equipment 302 and equipment 303 are succeeded in registration by 310, it is classified into an end
End equipment group 320, and generate group key for this terminal unit group 320, then by this group key
Combine with the equipment condition code of each terminal unit in group and calculate based on Lagrange interpolation polynomial
Go out the set constructor code of this terminal unit group 320, and this set constructor code is broadcast to equipment 301,
Equipment 302 and equipment 303.After equipment 301, equipment 302 and equipment 303 receive set constructor code
In conjunction with the equipment condition code of self, construct group key.In same device packets 320, equipment 301,
Equipment 302 utilizes the group key established to be encrypted with equipment 303 and communicates.Device packets occurs
During change, Internet of Things control centre generates new group key, and combines the equipment of packet current device
Condition code generates new set constructor code, and is sent to current all group terminal units.
The method that above-described embodiment of the application provides sets by combining this group key and this group entirety
Standby equipment condition code calculates a set constructor code, and is sent to all group terminal units, eventually
End equipment calculates the key of the interior coded communication of group further according to set constructor code and equipment condition code.This
The beneficial effect of the invention includes: (1) improves efficiency: the packet containing n equipment utilizes and establishes
Shared group key be encrypted communication, its amount of calculation and the traffic are tradition 1:1 data encryptions
1/ (n-1), wherein n of method (such as SSL (Secure Sockets Layer SSL))
For natural number.When n value is bigger, improved efficiency is obvious；(2) backward compatible: can be as thing
The application layer data agreements such as networking, Smart Home, the most independent with communication protocol and backward compatible,
Whether the communication protocol no matter used provides safety guarantee, and this method can ensure number of users
According to safety and confidentiality；(3) flexible expansion: can carry out after device packets changes
Group key management/cancel, group key possesses forward secrecy and backward security, it is ensured that equipment is merely able to
Access the resource in current entitlement, with the access control method phase being generally basede on password, identifying code
Ratio, this method makes equipment rights management more safety with flexible.
With further reference to Fig. 4, it illustrates another of internet-of-things terminal equipment encryption communication method
The flow process 400 of embodiment.The flow process 400 of this internet-of-things terminal equipment encryption communication method, including
Following steps:
Step 401, sends registration request to Internet of Things control centre.
In the present embodiment, internet-of-things terminal equipment encryption communication method runs on electronics thereon and sets
Standby (the such as terminal unit shown in Fig. 1) can be by wired connection mode or wireless connections
Mode sends registration request to Internet of Things control centre.
Step 402, it is thus achieved that the condition code of terminal unit.
In the present embodiment, equipment condition code is to be consulted by equipment and control centre and be calculated.
Equipment condition code can also by equipment or Internet of Things control centre unilaterally independently generate and notify to
The other side.
In some optional implementations of the present embodiment, the described end that can will prestore
The condition code of end equipment is sent to described Internet of Things control centre.Terminal unit can be same when registration
Time send, to server, the condition code that is pre-stored in terminal unit.Such as, low configuration is set
Standby, such as intelligent electric lamp, sensor node etc., Terminal Equipments characteristics code can be by preset side
Formula stores in terminal unit.
In some optional implementations of the present embodiment, can receive in the control of described Internet of Things
The condition code of the described terminal unit that the heart sends.Such as, for hand-hold mobile device, such as intelligence
Phones etc., Terminal Equipments characteristics code can configure by the way of password matches.
Step 403, receives the set constructor code that Internet of Things control centre sends.
In the present embodiment, terminal unit receives the set constructor code that Internet of Things control centre sends,
Wherein, this set constructor Ma Shi Internet of Things control centre is according to complete in the equipment group at terminal unit place
The equipment condition code of body terminal unit and key generate.
In some optional implementations of the present embodiment, it is possible to use the information authentication received
Code and signature carry out information authentication and authentication to set constructor code.
Step 404, condition code and set constructor yardage according to terminal unit calculate terminal unit institute
The group key of terminal unit group.
In the present embodiment, key structure method needs and Internet of Things control centre set constructor yardage
Calculation method is consistent.
In some optional implementations of the present embodiment, can be multinomial based on Lagrange's interpolation
Formula calculates the group key of the terminal unit group at terminal unit place, according in step 204 based on drawing
The computational methods of the set constructor code of Ge Lang interpolation polynomial, the concrete process of key structure method
As follows:
Assuming total t station terminal equipment in the packet of a certain terminal unit, in packet, any appliance will be from
The equipment condition code of body is converted to two-dimensional coordinate value form, and conversion regime is CodeU→(CodeU,
hash(CodeU)), wherein, abscissa CodeUIt is equipment condition code, vertical coordinate hash (CodeU)
It is by CodeUCarry out the coordinate figure that hash functional transformation obtains.Receive from Internet of Things control centre
To set constructor code include t two-dimensional coordinate value, utilize this t two-dimensional coordinate value and (CodeU,
hash(CodeU)) construct t rank lagrange polynomial f (x), thus obtaining group key is
KeyG=f (0).
Step 405, uses group key to be encrypted communication with the terminal unit in terminal unit group.
In the present embodiment, in same device packets, the group key that each equipment utilization establishes
It is encrypted communication.
In some optional implementations of the present embodiment, data send terminal unit can be by
Group key, as encryption key, uses the AES preset to be encrypted communication data；Number
According to sending terminal unit, encrypted data are sent to data receiving terminal equipment；Data receiver
Group key as decruption key, is used decipherment algorithm encrypted by receive by terminal unit
Data are decrypted and then obtain communication data, and wherein, decipherment algorithm is consistent with AES.
In some optional implementations of the present embodiment, the AES preset can include height
Level encryption standard (AES, Advanced Encryption Standard) or triple DEA
(3-DES, Triple Data Encryption Algorithm).When there being multiple data receiving terminal equipment
Time, data send terminal unit and have only to use group key encryption once to generate a cryptograph files,
This cryptograph files is sent to all data receiving terminal equipment, if data receiving terminal equipment is gathered around
There is this group key then can decipher and obtain data clear text.
Such as, certain device packets in Internet of things system is by a smart mobile phone A and some Intelligent electrics
Lamp apparatus forms, and smart mobile phone is sent to all intelligent electric lamp after using the instruction of group key control extension,
Electric light correctly performs instruction after obtaining control instruction after using group key deciphering；Another smart mobile phone B
Being not belonging to this device packets, owing to not grasping this group group key, therefore this smart mobile phone B sends
Control instruction cannot be identified by this group lamp device, thus can realize the peace of home equipment efficiently
Full control.
The most such as, certain device packets is by the playscript with stage directions ground intelligent television C, a long-distance intelligent mobile phone D
With a local intelligent mobile phone E composition, user utilizes these three equipment to carry out online actual conversation,
Conversation content is encrypted by this group group key, and another equipment F is not belonging to this device packets, therefore without
Method participates in dialogue, also cannot obtain conversation content, thus can prevent hacker to user profile very
Obtain.
In some optional implementations of the present embodiment, data send terminal unit can be by
In encrypted data acquisition group, broadcast mode is sent to data receiving terminal equipment, or uses public affairs
Accuse plate mode and be sent to data receiving terminal equipment.
The method that above-described embodiment of the application provides is by group Internet of Things control centre sent
Structure code is combined with the equipment condition code of self and calculates group key for organizing the encryption of interior terminal unit
Communication, it is achieved that the encryption key distribution mode of one-to-many, amount of calculation and the traffic are less, and efficiency is relatively
High.
With further reference to Fig. 5, as to the realization of method shown in above-mentioned each figure, the application provides
A kind of embodiment of internet-of-things terminal equipment coded communication device, this device embodiment with
Embodiment of the method shown in Fig. 2 is corresponding, and this device specifically can apply to various electronic equipment
In.
As it is shown in figure 5, the internet-of-things terminal equipment coded communication device 500 described in the present embodiment
Including: registering unit 501, condition code acquiring unit 502, Key generating unit 503, structure
Code signal generating unit 504 and transmitting element 505.Wherein, registering unit 501 is configured to receive
Terminal unit send registration request and register described terminal unit；Condition code acquiring unit 502
It is configured to obtain the condition code of described terminal unit；Key generating unit 503 is configured to root
According to the access rights of terminal unit, each terminal unit succeeded in registration is grouped, and
Group key is generated for each terminal unit group；Structure code signal generating unit 504 is configured to for often
Individual terminal unit group, each according in the group key of this terminal unit group and this terminal unit group
The Terminal Equipments characteristics yardage of terminal unit calculates the set constructor code of this terminal unit group；Send single
It is each that unit 505 is configured to be sent in this terminal unit group the set constructor code calculated
Terminal unit, wherein, each terminal unit feature of described set constructor code He this terminal unit
Yardage calculates group key coded communication between every terminal unit.
In some optional implementations of the present embodiment, condition code acquiring unit 502 is further
It is configured to receive the condition code of the described terminal unit that described terminal unit sends.
In some optional implementations of the present embodiment, condition code acquiring unit 502 is further
It is configured to generate the condition code of described terminal unit according to default mode and be sent to described terminal
Equipment.
In some optional implementations of the present embodiment, Key generating unit 503 is further
It is configured to each terminal unit group and generates random key.
In some optional implementations of the present embodiment, Key generating unit 503 is further
It is configured to choose key for each terminal unit group from the pool of keys generated.
In some optional implementations of the present embodiment, Key generating unit 503 is further
The key updating mode according to presetting that is configured to is carried out temporarily or periodically key updating.
In some optional implementations of the present embodiment, structure code signal generating unit 504 enters one
Step is configured to calculate the set constructor code of this terminal unit group based on Lagrange interpolation polynomial.
In some optional implementations of the present embodiment, transmitting element 505 configures further
With described group of structure after calculating the message error detection code of described set constructor code and signing with private key
Make code and send jointly to each terminal unit in this terminal unit group.
With further reference to Fig. 6, as to the realization of method shown in above-mentioned each figure, the application provides
A kind of another embodiment of internet-of-things terminal equipment coded communication device, this device embodiment
Corresponding with the embodiment of the method shown in Fig. 4, this device specifically can apply to various electronics and sets
In Bei.
As shown in Figure 6, the internet-of-things terminal equipment coded communication device 600 described in the present embodiment
Including: registration request unit 601, condition code memory element 602, reception unit 603, key
Computing unit 604 and communication unit 605.Wherein, registration request unit 601 be configured to
Internet of Things control centre sends registration request；Condition code memory element 602 is configured to obtain eventually
The condition code of end equipment；Receive unit 603 to be configured to receive what Internet of Things control centre sent
Set constructor code；Key calculation unit 604 be configured to condition code according to described terminal unit and
Described set constructor yardage calculates the group key of the terminal unit group at described terminal unit place, wherein,
The terminal unit Zu Shi Internet of Things control centre at described terminal unit place is according to the visit of terminal unit
Ask the terminal unit group of delineation of power；Communication unit 605 be configured to use described group key with
Terminal unit in described terminal unit group is encrypted communication.
In some optional implementations of the present embodiment, condition code memory element 602 enters one
Step is configured to: receive the condition code of the described terminal unit that described Internet of Things control centre sends.
In some optional implementations of the present embodiment, condition code memory element 602 enters one
Step is configured to: the condition code of the described terminal unit prestored is sent to described Internet of Things
Control centre.
In some optional implementations of the present embodiment, receive unit 603 and configure further
For: utilize the Message Authentication Code received and signature that set constructor code is carried out information authentication and body
Part certification.
In some optional implementations of the present embodiment, key calculation unit 604 is further
It is configured to: calculate the terminal at described terminal unit place based on Lagrange interpolation polynomial
The group key of equipment group.
In some optional implementations of the present embodiment, communication unit 605 configures further
For: data send terminal unit using described group key as encryption key, use that presets to add
Communication data is encrypted by close algorithm；Described data send terminal unit by encrypted data
It is sent to data receiving terminal equipment；Described data receiving terminal equipment using described group key as
Decruption key, uses decipherment algorithm that the encrypted data received are decrypted and then are obtained
Communication data, wherein, decipherment algorithm is consistent with AES.
In some optional implementations of the present embodiment, the AES preset can include
Advanced Encryption Standard or triple DEA.
In some optional implementations of the present embodiment, data send terminal unit can be by
Encrypted data are sent to data receiving terminal equipment, including: described data send terminal and set
It is sent to data receiving terminal equipment for by broadcast mode in encrypted data acquisition group, or adopts
It is sent to data receiving terminal equipment by bulletin board mode.
Below with reference to Fig. 7, it illustrates the terminal unit be suitable to for realizing the embodiment of the present application
Or the structural representation of the computer system 700 of Internet of Things control centre.
As it is shown in fig. 7, computer system 700 includes CPU (CPU) 701, its
Can be according to the program being stored in read only memory (ROM) 702 or from storage part 708
It is loaded into the program in random access storage device (RAM) 703 and performs various suitable action
And process.In RAM 703, also storage has system 700 to operate required various program sums
According to.CPU 701, ROM 702 and RAM 703 are connected with each other by bus 704.Input
/ output (I/O) interface 705 is also connected to bus 704.
It is connected to I/O interface 705: include the importation 706 of keyboard, mouse etc. with lower component；
Including such as liquid crystal display (LCD) etc. and the output part 707 of speaker etc.；Including
The storage part 708 of hard disk etc.；And include the network of such as LAN card, modem etc.
The communications portion 709 of interface card.Communications portion 709 performs logical via the network of such as the Internet
Letter processes.Driver 710 is connected to I/O interface 705 also according to needs.Detachable media 711,
Such as disk, CD, magneto-optic disk, semiconductor memory etc., be arranged on driving as required
On device 710, in order to the computer program read from it is mounted into storage part as required
Divide 708.
Especially, according to embodiment of the disclosure, the process described above with reference to flow chart is permissible
It is implemented as computer software programs.Such as, embodiment of the disclosure and include a kind of computer journey
Sequence product, it includes the computer program being tangibly embodied on machine readable media, described meter
Calculation machine program comprises the program code for performing the method shown in flow chart.In such enforcement
In example, this computer program can be downloaded and installed from network by communications portion 709,
And/or be mounted from detachable media 711.At this computer program by CPU (CPU)
During 701 execution, perform the above-mentioned functions limited in the present processes.
Flow chart in accompanying drawing and block diagram, it is illustrated that according to the various embodiment of the application system,
Architectural framework in the cards, function and the operation of method and computer program product.This point
On, each square frame in flow chart or block diagram can represent a module, program segment or code
A part, a part for described module, program segment or code comprise one or more for
Realize the executable instruction of the logic function of regulation.It should also be noted that at some as replacement
In realization, the function marked in square frame can also be sent out to be different from the order marked in accompanying drawing
Raw.Such as, two square frames succeedingly represented can essentially perform substantially in parallel, they
Sometimes can also perform in the opposite order, this is depending on involved function.It is also noted that
It is, the square frame in each square frame in block diagram and/or flow chart and block diagram and/or flow chart
Combination, can realize by the special hardware based system of the function or operation that perform regulation,
Or can realize with the combination of specialized hardware with computer instruction.
It is described in the embodiment of the present application involved unit to realize by the way of software,
Can also realize by the way of hardware.Described unit can also be arranged within a processor,
For example, it is possible to be described as: a kind of processor includes registering unit, condition code acquiring unit, close
Key signal generating unit, structure code signal generating unit and transmitting element.Wherein, the title of these unit exists
Being not intended that the restriction to this unit itself in the case of certain, such as, registering unit can also quilt
It is described as " registration request sent for receiving terminal apparatus the list registering described terminal unit
Unit ".
As on the other hand, present invention also provides a kind of nonvolatile computer storage media,
This nonvolatile computer storage media can be described in above-described embodiment included in device
Nonvolatile computer storage media；Can also be individualism, be unkitted allocate in terminal non-
Volatile computer storage medium.Above-mentioned nonvolatile computer storage media storage have one or
The multiple program of person, when one or more program is performed by an equipment so that described
Equipment: receiving terminal apparatus send registration request and register described terminal unit；Obtain described end
The condition code of end equipment；Each terminal that access rights according to terminal unit will succeed in registration
Equipment is grouped, and is that each terminal unit group generates group key；For each terminal unit group,
The terminal of each terminal unit in the group key according to this terminal unit group and this terminal unit group sets
Standby condition code calculates the set constructor code of this terminal unit group；The set constructor code calculated is sent
To each terminal unit in this terminal unit group, wherein, the described set constructor of each terminal unit
The condition code of code and this terminal unit calculates group key coded communication between every terminal unit.Or
Person's above-mentioned nonvolatile computer storage media storage has one or more program, when described one
When individual or multiple programs are performed by an equipment so that described equipment: in Internet of Things control
The heart sends registration request；Obtain the condition code of terminal unit；Receive Internet of Things control centre to send
Set constructor code；Condition code and described set constructor yardage according to described terminal unit calculate described
The group key of the terminal unit group at terminal unit place, wherein, the end at described terminal unit place
The terminal unit that end equipment Zu Shi Internet of Things control centre divides according to the access rights of terminal unit
Group；Described group key is used to be encrypted communication with the terminal unit in described terminal unit group.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.
It will be appreciated by those skilled in the art that invention scope involved in the application, however it is not limited on
State the technical scheme of the particular combination of technical characteristic, also should contain without departing from described simultaneously
In the case of inventive concept, above-mentioned technical characteristic or its equivalent feature carry out combination in any and shape
Other technical scheme become.Such as features described above has with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of similar functions is replaced mutually and formed.
Claims (28)
1. an internet-of-things terminal equipment encryption communication method, it is characterised in that described method bag
Include:
Receiving terminal apparatus send registration request and register described terminal unit；
Obtain the condition code of described terminal unit；
The each terminal unit succeeded in registration is carried out point by the access rights according to terminal unit
Group, and be that each terminal unit group generates group key；
For each terminal unit group, according to group key and this terminal unit of this terminal unit group
The Terminal Equipments characteristics yardage of each terminal unit in group calculates the set constructor of this terminal unit group
Code；
The set constructor code calculated is sent to each terminal unit in this terminal unit group,
Wherein, each terminal unit condition code of described set constructor code He this terminal unit calculates group
Key coded communication between every terminal unit.
Internet-of-things terminal equipment encryption communication method the most according to claim 1, its feature
It is, the condition code of the described terminal unit of described acquisition, including:
Receive the condition code of the described terminal unit that described terminal unit sends.
Internet-of-things terminal equipment encryption communication method the most according to claim 1, its feature
It is, the condition code of the described terminal unit of described acquisition, including:
Generate the condition code of described terminal unit according to default mode and be sent to described terminal and set
Standby.
Internet-of-things terminal equipment encryption communication method the most according to claim 1, its feature
Be, described for each terminal unit group generate group key, including:
Random key is generated for each terminal unit group.
Internet-of-things terminal equipment encryption communication method the most according to claim 1, its feature
Be, described for each terminal unit group generate group key, including:
Key is chosen for each terminal unit group from the pool of keys generated.
Internet-of-things terminal equipment encryption communication method the most according to claim 1, its feature
Be, described for each terminal unit group generate group key, including:
Carry out temporarily or periodically key updating according to default key updating mode.
Internet-of-things terminal equipment encryption communication method the most according to claim 1, its feature
It is, described each terminal that the set constructor code calculated is sent in this terminal unit group
Equipment, including:
With described group of structure after calculating the message error detection code of described set constructor code and signing with private key
Make code and send jointly to each terminal unit in this terminal unit group.
8. an internet-of-things terminal equipment encryption communication method, it is characterised in that described method bag
Include:
Registration request is sent to Internet of Things control centre；
Obtain the condition code of terminal unit；
Receive the set constructor code that Internet of Things control centre sends；
Condition code and described set constructor yardage according to described terminal unit calculate described terminal unit
The group key of the terminal unit group at place, wherein, the terminal unit group at described terminal unit place
It it is the Internet of Things control centre terminal unit group according to the access rights division of terminal unit；
Described group key is used to be encrypted communication with the terminal unit in described terminal unit group.
Internet-of-things terminal equipment encryption communication method the most according to claim 8, its feature
It is, the condition code of described acquisition terminal unit, including:
Receive the condition code of the described terminal unit that described Internet of Things control centre sends.
Internet-of-things terminal equipment encryption communication method the most according to claim 8, it is special
Levy and be, the condition code of described acquisition terminal unit, including:
The condition code of the described terminal unit prestored is sent to described Internet of Things control centre.
11. internet-of-things terminal equipment encryption communication methods according to claim 8, it is special
Levy and be, the set constructor code that described reception Internet of Things control centre sends, including:
Utilize the Message Authentication Code received and signature that set constructor code is carried out information authentication and identity
Certification.
12. internet-of-things terminal equipment encryption communication methods according to claim 8, it is special
Levying and be, the described group key of described use adds with the terminal unit in described terminal unit group
Close communication, including:
Data send terminal unit using described group key as encryption key, use the encryption preset
Communication data is encrypted by algorithm；
Described data send terminal unit and encrypted data are sent to data receiving terminal equipment；
Described group key as decruption key, is used deciphering to calculate by described data receiving terminal equipment
The encrypted data received are decrypted and then obtain communication data by method, wherein, and deciphering
Algorithm is consistent with AES.
13. internet-of-things terminal equipment encryption communication methods according to claim 12, it is special
Levying and be, described default AES includes Advanced Encryption Standard or triple DEA.
14. internet-of-things terminal equipment encryption communication methods according to claim 12, it is special
Levying and be, described data send terminal unit and encrypted data are sent to data receiving terminal
Equipment, including:
Described data send terminal unit and are sent to by broadcast mode in encrypted data acquisition group
Data receiving terminal equipment, or use bulletin board mode to be sent to data receiving terminal equipment.
15. 1 kinds of internet-of-things terminal equipment coded communication devices, it is characterised in that described device
Including:
Registering unit, is configured to the registration request of receiving terminal apparatus transmission and registers described end
End equipment；
Condition code acquiring unit, is configured to obtain the condition code of described terminal unit；
Key generating unit, being configured to the access rights according to terminal unit will register
Each terminal unit of merit is grouped, and is that each terminal unit group generates group key；
Structure code signal generating unit, is configured to, for each terminal unit group, set according to this terminal
The Terminal Equipments characteristics yardage of each terminal unit in the group key of standby group and this terminal unit group
Calculate the set constructor code of this terminal unit group；
Transmitting element, is configured to the set constructor code calculated is sent to this terminal unit group
Interior each terminal unit, wherein, each terminal unit described set constructor code and this terminal set
Standby condition code calculates group key coded communication between every terminal unit.
16. internet-of-things terminal equipment coded communication devices according to claim 15, it is special
Levying and be, described condition code acquiring unit is configured to further:
Receive the condition code of the described terminal unit that described terminal unit sends.
17. internet-of-things terminal equipment coded communication devices according to claim 15, it is special
Levying and be, described condition code acquiring unit is configured to further:
Generate the condition code of described terminal unit according to default mode and be sent to described terminal and set
Standby.
18. internet-of-things terminal equipment coded communication devices according to claim 15, it is special
Levying and be, described Key generating unit is configured to further:
Random key is generated for each terminal unit group.
19. internet-of-things terminal equipment coded communication devices according to claim 15, it is special
Levying and be, described Key generating unit is configured to further:
Key is chosen for each terminal unit group from the pool of keys generated.
20. internet-of-things terminal equipment coded communication devices according to claim 15, it is special
Levying and be, described Key generating unit is configured to further:
Carry out temporarily or periodically key updating according to default key updating mode.
21. internet-of-things terminal equipment coded communication devices according to claim 15, it is special
Levying and be, described transmitting element is configured to further:
With described group of structure after calculating the message error detection code of described set constructor code and signing with private key
Make code and send jointly to each terminal unit in this terminal unit group.
22. 1 kinds of internet-of-things terminal equipment coded communication devices, it is characterised in that described device
Including:
Registration request unit, is configured to send registration request to Internet of Things control centre；
Condition code memory element, is configured to obtain the condition code of terminal unit；
Receive unit, be configured to receive the set constructor code that Internet of Things control centre sends；
Key calculation unit, is configured to the condition code according to described terminal unit and described group of structure
Make the group key that yardage calculates the terminal unit group at described terminal unit place, wherein, described end
The terminal unit Zu Shi Internet of Things control centre at end equipment place is according to the access rights of terminal unit
The terminal unit group divided；
Communication unit, is configured to use described group key and the terminal in described terminal unit group
Equipment is encrypted communication.
23. internet-of-things terminal equipment coded communication devices according to claim 22, it is special
Levying and be, described condition code memory element is configured to further:
Receive the condition code of the described terminal unit that described Internet of Things control centre sends.
24. internet-of-things terminal equipment coded communication devices according to claim 22, it is special
Levying and be, described condition code memory element is configured to further:
The condition code of the described terminal unit prestored is sent to described Internet of Things control centre.
25. internet-of-things terminal equipment coded communication devices according to claim 22, it is special
Levying and be, described reception unit is configured to further:
Utilize the Message Authentication Code received and signature that set constructor code is carried out information authentication and identity
Certification.
26. internet-of-things terminal equipment coded communication devices according to claim 22, it is special
Levying and be, described communication unit is configured to further:
Data send terminal unit using described group key as encryption key, use the encryption preset
Communication data is encrypted by algorithm；
Described data send terminal unit and encrypted data are sent to data receiving terminal equipment；
Described group key as decruption key, is used deciphering to calculate by described data receiving terminal equipment
The encrypted data received are decrypted and then obtain communication data by method, wherein, and deciphering
Algorithm is consistent with AES.
27. internet-of-things terminal equipment coded communication devices according to claim 26, it is special
Levying and be, described default AES includes Advanced Encryption Standard or triple DEA.
28. internet-of-things terminal equipment coded communication devices according to claim 26, it is special
Levying and be, described data send terminal unit and encrypted data are sent to data receiving terminal
Equipment, including:
Described data send terminal unit and are sent to by broadcast mode in encrypted data acquisition group
Data receiving terminal equipment, or use bulletin board mode to be sent to data receiving terminal equipment.
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