CN107249009A - A kind of data verification method and system based on block chain - Google Patents
A kind of data verification method and system based on block chain Download PDFInfo
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- CN107249009A CN107249009A CN201710651835.7A CN201710651835A CN107249009A CN 107249009 A CN107249009 A CN 107249009A CN 201710651835 A CN201710651835 A CN 201710651835A CN 107249009 A CN107249009 A CN 107249009A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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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
- H04L63/045—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 wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption
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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
- H04L63/0478—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 applying multiple layers of encryption, e.g. nested tunnels or encrypting the content with a first key and then with at least a second key
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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
- H04L63/0823—Network architectures or network communication protocols for network security for authentication of entities using certificates
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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
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
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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
- H04L63/12—Applying verification of the received information
- H04L63/126—Applying verification of the received information the source of the received data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
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Abstract
This application discloses a kind of data verification method based on block chain and system, including：The sensing data of environment and/or home equipment state is gathered by multiple wireless sensor nodes of wireless sensor network, headend is uploaded to after processing；Headend is forwarded to data check network after the sensing data after receiving processing；Multiple data check nodes in data check network are responsible for that sensing data is verified and preserved；Each data check node is block chain node, and multiple data check nodes constitute a distributed data base.The application completes data check task using data check node, verifying work is distributed to check-node from headend, can overcome that the verification efficiency excessively concentrated and brought due to verification task is low, speed is slow, propagation delay time is high, it is vulnerable the problems such as, and excitation node active certification data, verification task is rapidly completed, arbitrary node single point failure is all without the whole check system of influence.
Description
Technical field
The present invention relates to technical field of data check, more particularly to a kind of data verification method based on block chain and it is
System.
Background technology
Internet of Things is by various information sensing devices, and collection in real time needs to monitor, connects, the interactive various needs of object
Information, the huge network combined to form with internet.The purpose is to realize thing and thing, thing and people, all article and net
The connection of network, convenient identification, management and control.The operation relevant with data all is being carried out all the time in Internet of things system,
Including links such as data acquisition, data transfer and data storages.Data are easy to be by malicious attack and non-in each link
Method distorts operation.In data acquisition link, illegal node can pretend to be or attack legitimate node to carry out illegal sensing data
Upload；In data transfer link, on the one hand it may cause error code because channel quality is not good, on the other hand because data are in transmission
During easily by malicious modification, the data for ultimately resulting in upload are illegal etc..Therefore, in data storage advance row data check
It is essential operation.The purpose of data check be in order to prevent illegal node pretend to be with attack, prevent data and exist
Be maliciously tampered, ensure authenticity, legitimacy and the integrality of data in transmitting procedure.
Current existing main two kinds of data check scheme：As shown in figure 1, one kind is headend directly as data
Verification center, is responsible for the verification task for the sensing data that all wireless sensing nodes are uploaded；As shown in Fig. 2 another is increase
Data verification server, when headend receives the sensing data of wireless sensing node upload, first by original sensing data
Verification server is uploaded to, data check work is completed by verification server, then check results are returned.Both the above data school
Proved recipe formula is all based on centralized verification center.
The traditional centralized centralization verification mode of the above, which has verification and calculated, excessively to be concentrated, verification cause it is computationally intensive,
The problems such as speed is slow, time delay is high, power consumption is high, deployment data verification server hardware cost is high；Centralized management easily faces list
Point failure, by centralized malicious attack equivalent risk.
The content of the invention
In view of this, can be with it is an object of the invention to provide a kind of data verification method based on block chain and system
Lifting verification efficiency, is rapidly completed verification task, and not vulnerable.Its concrete scheme is as follows：
A kind of data verification method based on block chain, including：
Environment and/or the sensing of home equipment state are gathered by multiple wireless sensor nodes of wireless sensor network
Data, are uploaded to the headend after processing；
The headend is forwarded to the data check network after the sensing data after receiving processing；
Multiple data check nodes in the data check network are responsible for the sense forwarded to the headend
Data are surveyed to be verified and preserved；Each data check node is block chain node, multiple data check node compositions
One distributed data base.
Preferably, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, by wireless
Before multiple wireless sensor nodes collection environment of sensor network and/or the sensing data of home equipment state, in addition to：
The headend, the wireless sensing node and the data check node are awarded by authentication center
Weigh certification.
Preferably, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, the wireless biography
Feel node turns into legal wireless sensing node after the authorization identifying by authentication center, and obtains unique wireless sensing node
Digital certificate and symmetric key；
The headend obtains unique headend digital certificate after the authorization identifying by authentication center
And symmetric key；
The data check node turns into valid data check-node after the authorization identifying by authentication center, and obtains
Unique public key, private key, data check node digital certificate and symmetric key；The public key, for passing through the data forwarding
Device is broadcasted to the data check network and the wireless sensor network；The private key, for by artificially in the data
Shared between check-node.
Preferably, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, in addition to：
The headend is forwarded to the nothing after the director data of intelligent terminal of access internet is received
Line sensor network；
The wireless sensor network performs corresponding instruction according to the director data.
Preferably, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, by wirelessly passing
The multiple wireless sensor nodes collection environment and/or the sensing data of home equipment state of sensor network, are uploaded after processing
To the headend, specifically include：
Environment and/or the sensing of home equipment state are gathered by multiple wireless sensor nodes of wireless sensor network
After data, it is encrypted with the public key of the data check node, obtains encryption data, and enclose what the authentication center issued
Wireless sensing node digital certificate；
Hash operation is carried out to the encryption data and obtains first message summary, and is packaged into the first encapsulation of data；
After first encapsulation of data is encrypted using symmetric encipherment algorithm, pass through the wireless sensor network
Single-hop or multi-hop transmission, are uploaded to the headend.
Preferably, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, the data turn
Hair device is forwarded to the data check network, specifically included after the sensing data after receiving processing：
The headend is received after first encapsulation of data after encryption, decrypted data packet, and encloses described
The headend digital certificate that authentication center issues；
Data after decryption are packaged into the second encapsulation of data together with the headend digital certificate；
After second encapsulation of data is encrypted using the symmetric encipherment algorithm, it is forwarded in the form of broadcast
The data check node of the data check network.
Preferably, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, the data school
The multiple data check nodes tested in network are responsible for that the sensing data that the headend is forwarded is verified and protected
Deposit, specifically include：
Multiple data check nodes of the data check network receive encryption after second encapsulation of data after,
Decrypted data packet, verifies whether the headend digital certificate is effective；
If invalid, directly give up second encapsulation of data；If effectively, then carrying out Hash to second encapsulation of data
Computing obtains the second eap-message digest；
First message summary and second eap-message digest are compared；
If differing, directly give up second encapsulation of data；If identical, second encapsulation of data is verified in biography
It is not tampered with during defeated；
Verify whether the wireless sensing node digital certificate is effective；
If invalid, second encapsulation of data is given up；If effectively, passing through verification, it is believed that the second encapsulation number
According to source it is legal and be not tampered with, and the encryption data is stored in block main part.
Preferably, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, described it will add
Ciphertext data is stored in after block main part, in addition to：
The data that each data check node is preserved to the block main part carry out Hash operation respectively, obtain each
The cryptographic Hash of data, Hash operation is carried out by each cryptographic Hash two-by-two, until forming Merkel tree and Merkel's root；
Merkel's root is stored in block head, and is packaged into intact block；
Block is broadcasted by the most fast data check node for completing block packing, other described data check nodes
Receive after block, Merkel's root of the block by Merkel's root of the block itself generated with receiving is contrasted；
If identical, certification passes through, and passes back through message；If it is different, then authentification failure, returns to failed message；
In the return message that the data check node is received, if described exceed setting ratio by message proportion
Example, then be directly determined as that multinode certification passes through, and the data check node obtains the right that block is added to block chain, simultaneously
Rewarded；
If it is described by message proportion not less than setting ratio, judge multinode authentification failure.
The embodiment of the present invention additionally provides a kind of data verification system based on block chain, including：Headend, has
The wireless sensor network of multiple wireless sensing nodes, and the data check network constituted with multiple data check nodes；
The wireless sensor node, the sensing data for gathering environment and/or home equipment state, after processing on
Reach the headend；
The headend, for after the sensing data after receiving processing, being forwarded to the data check
Network；
Data check node is responsible for that the sensing data that the headend is forwarded is verified and preserved；Each institute
Data check node is stated for block chain node, multiple data check nodes constitute a distributed data base.
Preferably, in the above-mentioned data verification system based on block chain provided in an embodiment of the present invention, in addition to：Certification
Center；
The authentication center, for the headend, the wireless sensing node and the data check node
Carry out authorization identifying.
A kind of data verification method and system based on block chain provided by the present invention, including：Pass through wireless senser
The multiple wireless sensor nodes collection environment and/or the sensing data of home equipment state of network, are uploaded to number after processing
According to transponder；Headend is forwarded to data check network after the sensing data after receiving processing；Data check network
In multiple data check nodes be responsible for that the sensing data that headend is forwarded is verified and preserved；Each data check section
Point is block chain node, and multiple data check nodes constitute a distributed data base.The present invention using data check node come
Data check task is completed, verifying work is distributed to check-node from headend, can be overcome due to verification task mistake
In verification efficiency that concentration is brought is low, speed is slow, propagation delay time is high, it is vulnerable the problems such as, and excitation node actively recognizes
Data are demonstrate,proved, verification task is rapidly completed, and arbitrary node single point failure is all without influenceing whole check system, it is to avoid because of verification
Loss and systemic breakdown that center is brought by concentration malicious attack.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is one of structural representation of data verification system in the prior art based on block chain；
Fig. 2 is the two of the structural representation of the data verification system in the prior art based on block chain；
Fig. 3 is the flow chart of the data verification method provided in an embodiment of the present invention based on block chain；
Fig. 4 is the structural representation of the data verification system provided in an embodiment of the present invention based on block chain.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The present invention provides a kind of data verification method based on block chain, as shown in figure 3, comprising the following steps：
S301, multiple wireless sensor nodes collection environment and/or home equipment state by wireless sensor network
Sensing data, headend is uploaded to after processing；
S302, headend are forwarded to data check network after the sensing data after receiving processing；
Multiple data check nodes in S303, data check network are responsible for entering the sensing data that headend is forwarded
Row is verified and preserved；Each data check node is block chain node, and multiple data check nodes constitute a distributed data base.
In the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, using data check node come
Data check task is completed, verifying work check-node is distributed to from headend, for efficiency, it is to avoid because of verification
Verification efficiency that task is excessively concentrated and brought is low, speed is slow, propagation delay time is high, it is vulnerable the shortcomings of；From the angle of robustness
From the point of view of degree, the data verification method of the invention based on block chain is completed by distribution verification, arbitrary data check-node single-point
Failure produces influence all without on whole data verification system, so as to avoid because verification center is brought by concentration malicious attack
Loss and systemic breakdown；From the perspective of cost, traditional distributed system is contrasted, block chain also has on its basis
The characteristics of going to trust, does not need any trust intermediary and credit to endorse, can significantly reduce trust cost, protect using block chain
Absolute trust is demonstrate,proved.
It should be noted that block chain technology is that collective safeguards a reliable number decentralization and by way of going to trust
According to the technical scheme in storehouse.Block chain technology is based on end-to-end (peer-to-peer, P2P) network, without centralized server, no
Any trust intermediary and credit endorsement are needed, trust cost is significantly reduced.
Block chain is a kind of special data structure that block-chaining gets up sequentially in time.Pass through applied cryptography
Learn, a decentralization database that can not be distorted, i.e. institute are formed between the block chain node of the block chain network is all added
Some block chain nodes all safeguard an identical DB Backup.Because the block chain node in block chain network is equity
, therefore node can be optionally added or exit network, the failure of any single node is impacted all without to network.
All common safeguards systems of node in a kind of block chain substantially still reciprocity distributed system, block chain network
Normal operation.In this distributed system, network delay, error of transmission for being faced in itself except internet etc. are inherently asked
Topic, also have brought due to decentralization the problems such as can not trusting any participant, there may be malicious node, in order to take precautions against
These are potentially threatened, and block catenary system makes each node reach common understanding using a kind of common recognition mechanism, ensure the final of data
Uniformity.
Traditional block chain is that all nodes of block chain network all safeguard the database jointly, and this mode is in actual fortune
There is overhead in excessive, the shortcomings of management is inconvenient.The present invention is, based on alliance's block chain, to introduce block chain technology and enter
After row data check, data safety storage can be further carried out along the advantage of block chain technology.Alliance's block chain conduct
A kind of special block chain, it is only necessary to the node maintenance database of part certification, without relying on the whole network node, is substantially reduced whole
Data storage, computing and the transmission pressure of individual block chain network (can now claim alliance's chain network), improve the flexible of block chain
Property, practicality and scalability.The above-mentioned data verification method based on block chain provided in an embodiment of the present invention exactly utilizes connection
Alliance's block chain, realizes distributed verification.Alliance's chain network (special area that data check network is made up of data check node
Block chain network), data check node requirements possess certain storage and calculate power, common recognition process are able to carry out, so as to complete data
Verification and the generation of block, according to the requirement of block chain, data check node needs to safeguard alliance's chain database jointly.
Specifically, in the specific implementation, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention
In, gather environment and/or the sensing number of home equipment state in multiple wireless sensor nodes by wireless sensor network
It is further comprising the steps of according to before：
Authorization identifying is carried out to headend, wireless sensing node and data check-node by authentication center.
Due to the interaction agent in the data verification method based on block chain：Wireless sensing node, check-node and data
Transponder, in certification of the initialization procedure by authentication center, this also save to a certain extent the certification of interaction into
This, only by the authorization identifying of authentication center, headend, wireless sensing node and check-node, which just have, possesses legal body
Part, the identity of node is proved by the method for authentication center's certification, this cost savings calculation power and supports, when reducing verification
Prolong, and ensure credible.
Further, in the specific implementation, in the above-mentioned data check side based on block chain provided in an embodiment of the present invention
In method, wireless sensing node turns into legal wireless sensing node after the authorization identifying by authentication center, and obtains unique
Wireless sensing node digital certificate and symmetric key, are designated as Cert respectivelynAnd Key；
Headend obtains unique headend digital certificate and right after the authorization identifying by authentication center
Claim key, Cert is designated as respectivelygwAnd Key；
Data check node turns into valid data check-node after the authorization identifying by authentication center, and obtains unique
Public key, private key, data check node digital certificate and symmetric key, PU, PR, Key and Cert are designated as respectivelyid；Public key PU, is used
Broadcasted in by headend to data check network and wireless sensor network；Private key PR, for by artificially in data
Shared between check-node.
From a security perspective, present invention utilizes the cryptography required by block chain technology, before data transfer
Carry out asymmetric encryption, it is ensured that sensing data can not tamper；Symmetric cryptography is used in data transmission procedure, it is ensured that
The invisibility of transmission packet.In secure data area, possess double shield and be conducive to the management of key.Therefore, at this
The research and extension of data safety storage can be seamlessly carried out on the basis of invention.
In the specific implementation, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, also wrap
Include：
Headend is forwarded to wireless senser after the director data of intelligent terminal of access internet is received
Network；
Wireless sensor network performs corresponding instruction according to director data.
It should be noted that headend is connection wireless sensor network and data check network, wireless senser
The bridge of network and internet.Wireless sensor network has certain instruction perform function, by the fortune for changing home equipment
Row state, can reach the purpose of adjusting ambient.
Further, in the specific implementation, in the above-mentioned data check side based on block chain provided in an embodiment of the present invention
In method, step S301 gathers environment and/or home equipment state by multiple wireless sensor nodes of wireless sensor network
Sensing data, headend is uploaded to after processing, specifically be may comprise steps of：
Environment and/or the sensing of home equipment state are gathered by multiple wireless sensor nodes of wireless sensor network
After data NodeData, it is encrypted with the public key PU of data check node, obtains encryption data NodeData_Cryp, and it is attached
The wireless sensing node digital certificate Cert that upper authentication center issuesni；
Hash Hash computings are carried out to encryption data NodeData_Cryp and obtain first message summary Msg, and are packaged into the
One encapsulation of data Data_Pkg；Data_Pkg data format for (NodeData_Cryp | | Certni||Msg)。
After the first encapsulation of data Data_Pkg is encrypted using symmetric encipherment algorithm, pass through wireless sensor network
Single-hop or multi-hop transmission, are uploaded to headend.
In the specific implementation, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, data
Transponder is forwarded to data check network, specifically included after the sensing data after receiving processing：
Headend is received after the first encapsulation of data Data_Pkg after encryption, decrypted data packet, and encloses certification
The headend digital certificate Cert that center is issuedgw；
By the data after decryption together with headend digital certificate CertgwIt is packaged into the second encapsulation of data Data_
PkgII；Data_PkgII data format (NodeData_Cryp | | Certni||Msg||Certgw)；
After the second encapsulation of data Data_PkgII is encrypted using symmetric encipherment algorithm, forwarded in the form of broadcast
To the data check node of data check network, it is ensured that each data check node can receive data.
In the specific implementation, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, data
Multiple data check nodes in verification network are responsible for that the sensing data that headend is forwarded is verified and preserved, specifically
Including：
Multiple data check node Ide of data check networkniThe second encapsulation of data Data_ after encryption is received
After PkgII, whether decrypted data packet, checking headend digital certificate is effective；
If invalid, directly give up the second encapsulation of data Data_PkgII；If effectively, then to the second encapsulation of data Data_
PkgII carries out Hash Hash computings and obtains the second eap-message digest Msg_2；
First message summary Msg and the second eap-message digest Msg_2 is compared；
If differing, directly give up the second encapsulation of data Data_PkgII；If identical, the second encapsulation of data is verified
Data_PkgII is not tampered with transmitting procedure；
Verify wireless sensing node digital certificate CertniIt is whether effective；
If invalid, the second encapsulation of data Data_PkgII is given up；If effectively, passing through verification, it is believed that the second encapsulation
Data Data_PkgII source is legal and is not tampered with, and encryption data NodeData_Cryp is stored in into block main part
Point.
In the specific implementation, in the above-mentioned data verification method based on block chain provided in an embodiment of the present invention, inciting somebody to action
Encryption data NodeData_Cryp is stored in after block main part, in addition to：
(time needs the frequency coordination according to node gathered data), each data check node pair will be crossed after certain time
The data that block main part is preserved carry out Hash Hash computings respectively, the cryptographic Hash of each data are obtained, by each cryptographic Hash
Hash Hash computings are carried out two-by-two, until forming Merkel Merkle trees and Merkel's Merkle roots；
Merkel Merkle roots are stored in block head, and are packaged into intact block；
Block is broadcasted by the most fast data check node for completing block packing, and other data check nodes receive block
Afterwards, Merkel's Merkle roots of block of the Merkel Merkle roots of the block itself generated with receiving are contrasted；
If identical, certification passes through, and passes back through message；If it is different, then authentification failure, returns to failed message；
In the return message that data check node (being initially completed the node of block packing) is received, if by shared by message
Ratio exceedes setting ratio (such as 80%), then is directly determined as that multinode certification passes through, and data check node, which is obtained, adds block
Enter the right of block chain, while being rewarded；
If by message proportion not less than setting ratio, judging multinode authentification failure.
So far, data check work is fully completed, and is stored in safe and reliable distributed data base.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of provided in an embodiment of the present invention above-mentioned based on area
The data verification system of block chain, because the principle that the data verification system based on block chain solves problem is based on foregoing one kind
The data verification method of block chain is similar, therefore the implementation of the data verification system based on block chain may refer to be based on block
The implementation of the data verification method of chain, repeats part and repeats no more.
In the specific implementation, the data verification system provided in an embodiment of the present invention based on block chain, as shown in figure 4, tool
Body includes：Headend 10, the wireless sensor network 20 with multiple wireless sensing nodes 21, and with multiple data
The data check network 30 that check-node 31 is constituted；
Wireless sensor node 21, the sensing data for gathering environment and/or home equipment state is uploaded after processing
To headend 10；
Headend 10, for after the sensing data after receiving processing, being forwarded to data check network 20；
Data check node 21 is responsible for that the sensing data that headend 10 is forwarded is verified and preserved；Each data school
Node 21 is tested for block chain node, multiple data check nodes 21 constitute a distributed data base.
In the specific implementation, in the above-mentioned data verification system based on block chain provided in an embodiment of the present invention, such as Fig. 4
It is shown, in addition to：Authentication center 40；
Authentication center 40, for being authorized to headend 10, wireless sensing node 21 and data check-node 31
Certification.
A kind of data verification method and system based on block chain provided in an embodiment of the present invention, including：By wirelessly passing
The multiple wireless sensor nodes collection environment and/or the sensing data of home equipment state of sensor network, are uploaded after processing
To headend；Headend is forwarded to data check network after the sensing data after receiving processing；Data check
Multiple data check nodes in network are responsible for that the sensing data that headend is forwarded is verified and preserved；Each data school
Node is tested for block chain node, multiple data check nodes constitute a distributed data base.The present invention utilizes data check section
Put to complete data check task, verifying work is distributed to check-node from headend, can overcome because verification is appointed
The verification efficiency excessively concentrating and bring of being engaged in is low, speed is slow, propagation delay time is high, it is vulnerable the problems such as, and excitation node master
Dynamic authentication data, is rapidly completed verification task, and arbitrary node single point failure is all without influenceing whole check system, it is to avoid because
Loss and systemic breakdown that verification center is brought by concentration malicious attack.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
The data verification method provided by the present invention based on block chain and system are described in detail above, herein
In apply specific case the principle and embodiment of the present invention be set forth, the explanation of above example is only intended to side
The method and its core concept of the assistant solution present invention；Simultaneously for those of ordinary skill in the art, the think of according to the present invention
Think, will change in specific embodiments and applications, in summary, this specification content should not be construed as pair
The limitation of the present invention.
Claims (10)
1. a kind of data verification method based on block chain, it is characterised in that including：
Environment and/or the sensing number of home equipment state are gathered by multiple wireless sensor nodes of wireless sensor network
According to being uploaded to the headend after processing；
The headend is forwarded to the data check network after the sensing data after receiving processing；
Multiple data check nodes in the data check network are responsible for the sensing number forwarded to the headend
According to being verified and preserved；Each data check node is block chain node, and multiple data check nodes constitute one
Distributed data base.
2. the data verification method according to claim 1 based on block chain, it is characterised in that passing through wireless senser
Before multiple wireless sensor nodes collection environment of network and/or the sensing data of home equipment state, in addition to：
Mandate is carried out by authentication center to the headend, the wireless sensing node and the data check node to recognize
Card.
3. the data verification method according to claim 2 based on block chain, it is characterised in that the wireless sensing node
Turn into legal wireless sensing node after the authorization identifying by authentication center, and obtain unique wireless sensing node numeral card
Book and symmetric key；
The headend obtains unique headend digital certificate and right after the authorization identifying by authentication center
Claim key；
The data check node turns into valid data check-node after the authorization identifying by authentication center, and obtains unique
Public key, private key, data check node digital certificate and symmetric key；The public key, for by the headend to
Data check network and the wireless sensor network broadcast；The private key, for by artificially in the data check
Shared between node.
4. the data verification method according to claim 3 based on block chain, it is characterised in that also include：
The headend is forwarded to the wireless biography after the director data of intelligent terminal of access internet is received
Sensor network；
The wireless sensor network performs corresponding instruction according to the director data.
5. the data verification method according to claim 4 based on block chain, it is characterised in that pass through wireless sensor network
The multiple wireless sensor nodes collection environment and/or the sensing data of home equipment state of network, are uploaded to described after processing
Headend, is specifically included：
The sensing data of environment and/or home equipment state is gathered by multiple wireless sensor nodes of wireless sensor network
Afterwards, be encrypted with the public key of the data check node, obtain encryption data, and enclose that the authentication center issues it is wireless
Sensing node digital certificate；
Hash operation is carried out to the encryption data and obtains first message summary, and is packaged into the first encapsulation of data；
After first encapsulation of data is encrypted using symmetric encipherment algorithm, pass through the single-hop of the wireless sensor network
Or multi-hop transmission, it is uploaded to the headend.
6. the data verification method according to claim 5 based on block chain, it is characterised in that the headend exists
Receive after the sensing data after processing, be forwarded to the data check network, specifically include：
The headend is received after first encapsulation of data after encryption, decrypted data packet, and encloses the certification
The headend digital certificate that center is issued；
Data after decryption are packaged into the second encapsulation of data together with the headend digital certificate；
After second encapsulation of data is encrypted using the symmetric encipherment algorithm, it is forwarded in the form of broadcast described
The data check node of data check network.
7. the data verification method according to claim 6 based on block chain, it is characterised in that the data check network
In multiple data check nodes be responsible for that the sensing data that the headend is forwarded is verified and preserved, specifically
Including：
Multiple data check nodes of the data check network are after second encapsulation of data after receiving encryption, decryption
Packet, verifies whether the headend digital certificate is effective；
If invalid, directly give up second encapsulation of data；If effectively, then carrying out Hash operation to second encapsulation of data
Obtain the second eap-message digest；
First message summary and second eap-message digest are compared；
If differing, directly give up second encapsulation of data；If identical, verify second encapsulation of data and be transmitted across
It is not tampered with journey；
Verify whether the wireless sensing node digital certificate is effective；
If invalid, second encapsulation of data is given up；If effectively, passing through verification, it is believed that second encapsulation of data
Source is legal and is not tampered with, and the encryption data is stored in into block main part.
8. the data verification method according to claim 7 based on block chain, it is characterised in that by the encryption data
It is stored in after block main part, in addition to：
The data that each data check node is preserved to the block main part carry out Hash operation respectively, obtain each data
Cryptographic Hash, each cryptographic Hash is subjected to Hash operation two-by-two, until forming Merkel tree and Merkel's root；
Merkel's root is stored in block head, and is packaged into intact block；
Block is broadcasted by the most fast data check node for completing block packing, and other described data check nodes are received
After block, Merkel's root of the block by Merkel's root of the block itself generated with receiving is contrasted；
If identical, certification passes through, and passes back through message；If it is different, then authentification failure, returns to failed message；
In the return message that the data check node is received, if described exceed setting ratio by message proportion,
Directly it is determined as that multinode certification passes through, the data check node obtains the right that block is added to block chain, obtains simultaneously
Reward；
If it is described by message proportion not less than setting ratio, judge multinode authentification failure.
9. a kind of data verification system based on block chain, it is characterised in that including：Headend, with multiple wireless biographies
Feel the wireless sensor network of node, and the data check network constituted with multiple data check nodes；
The wireless sensor node, the sensing data for gathering environment and/or home equipment state, is uploaded to after processing
The headend；
The headend, for after the sensing data after receiving processing, being forwarded to the data check network；
Data check node is responsible for that the sensing data that the headend is forwarded is verified and preserved；Each number
It is block chain node according to check-node, multiple data check nodes constitute a distributed data base.
10. the data verification system according to claim 9 based on block chain, it is characterised in that also include：In certification
The heart；
The authentication center, for being carried out to the headend, the wireless sensing node and the data check node
Authorization identifying.
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