CN110808959A - Intelligent equipment data acquisition system and method based on block chain - Google Patents
Intelligent equipment data acquisition system and method based on block chain Download PDFInfo
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- CN110808959A CN110808959A CN201910959791.3A CN201910959791A CN110808959A CN 110808959 A CN110808959 A CN 110808959A CN 201910959791 A CN201910959791 A CN 201910959791A CN 110808959 A CN110808959 A CN 110808959A
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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
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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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
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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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
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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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
- H04L67/133—Protocols for remote procedure calls [RPC]
Abstract
The invention is suitable for the technical field of data acquisition, and provides an intelligent device data acquisition system and a method based on a block chain, wherein the system comprises acquisition equipment, a processing system in data connection with the acquisition equipment, an account management module for generating a signature character string, an Saas platform connected with the processing system, and block chain link points in data connection with the Saas, information acquired by the acquisition equipment is sent to the inside of the processing system for encryption, and the account management module is connected with the processing system; by arranging the processing system, the account management module and the block chain nodes, in the using process, the processing system and the care management module respectively encrypt the MD5 and the signature character string of the acquired photo or video data, and the block chain nodes pass through the signature verification algorithm of the elliptic encryption algorithm ECC, so that the acquired data history record can not be tampered, can be traced and is prevented from being lost.
Description
Technical Field
The invention belongs to the technical field of data acquisition, and particularly relates to a data acquisition system and method for intelligent equipment based on a block chain.
Background
Along with the development of the internet of things, intelligent equipment is more and more popular, and the number of intelligent equipment terminals is increased day by day. The intelligent equipment acquisition terminal is widely applied to various industries, such as government departments of public security, environmental protection, forestry and the like, and performs administrative law enforcement recording and operation acquisition by using a law enforcement recorder; the household user utilizes the household anti-theft camera to perform anti-theft evidence obtaining and the like.
However, in the data acquisition process, various problems are encountered during the generation of the acquired data, such as dispersion, incompleteness, or counterfeiting or tampering by illegal molecules, which bring huge loss to users or institutions, and therefore, the security of the data acquired by the intelligent device needs to be ensured.
Disclosure of Invention
The invention provides a data acquisition system and a data acquisition method for intelligent equipment based on a block chain, and aims to solve various problems in the data acquisition process when the acquired data is generated, such as the acquired data is scattered, incomplete or forged or distorted by illegal molecules, and huge loss is brought to users or mechanisms. Therefore, the safety of data collected by the intelligent device needs to be guaranteed.
The invention is realized in such a way that an intelligent device data acquisition system based on a block chain comprises acquisition equipment, a processing system in data connection with the acquisition equipment, an account management module for generating a signature character string, an Saas platform connected with the processing system and block chain link points in data connection with the Saas, wherein information acquired by the acquisition equipment is sent to the inside of the processing system for encryption, the account management module is connected with the processing system, and the processing system reports processed data information to a block chain node through the Saas platform.
Preferably, the acquisition equipment is a camera, and videos or pictures are shot on the acquisition operation site through the camera.
Preferably, the system further comprises a server connected with the Saas platform and used for storing videos or pictures.
A data acquisition method based on a block chain intelligent device comprises the following steps:
step S100: shooting videos and pictures on site by the acquisition equipment;
step S200: the processing system encrypts collected files such as videos or photos;
step S300: the account management module generates a signature character string and sends the signature character string to the processing system;
step S400: the file information collected by the processing system component is reported to the Saas platform through an http protocol;
step S500: the Saas platform reports the acquired information to the block chain node through an RPC protocol;
step S600: and the block chain module matches the acquired information data through an elliptic cryptography algorithm (ECC), and if the acquired information data are matched, the acquired file MD5 is written into the block chain.
Preferably, the method further comprises initializing the device, wherein the intelligent device is started by the acquisition personnel for the first time, generates a pair of public and private blockchain keys and a blockchain address, and writes the private key into a TEE trusted execution environment in the device.
Preferably, the system further comprises registration hardware, which is used for collecting information and blockchain addresses of equipment registered by personnel on the Web service node, and the Web service node writes the registration information of the intelligent equipment into an intelligent contract of the blockchain.
Preferably, the method further comprises querying data, querying historical collection records on the Web service node by a collection person, and acquiring the collection records of the collection device from the blockchain Baas by the Web service node.
Preferably, in step S200, the processing system encrypts the file by using an MD5 encryption algorithm to obtain an MD5 code of the file.
Preferably, in step S300, the Saas platform obtains a public and private key system of the block chain corresponding to a preset administrator account, and signs the device name and the address information of the block chain by using an elliptic cryptosystem ECC and a private key to generate a signature character string.
Preferably, the file information in step S400 includes a public key of the collection device, a device name, a device block chain address, and a signature string.
Compared with the prior art, the invention has the beneficial effects that: according to the data acquisition system and method based on the blockchain intelligent equipment, by arranging the processing system, the account management module and the blockchain nodes, in the using process, the processing system and the care management module are used for respectively encrypting the MD5 and the signature character string of the acquired photo or video data, and the blockchain nodes pass through the signature verification algorithm of the elliptic encryption algorithm ECC, so that the historical record of the acquired data cannot be tampered, can be traced and prevented from being lost.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic structural diagram of the method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a technical solution: a data acquisition system of intelligent equipment based on a block chain comprises acquisition equipment 10, a processing system 20 in data connection with the acquisition equipment 10, an account management module 30 used for generating a signature character string, an Saas platform 40 connected with the processing system 20 and block chain link points 60 in data connection with the Saas, wherein information acquired by the acquisition equipment 10 is sent to the inside of the processing system 20 for encryption, the account management module 30 is connected with the processing system 20, and the processing system 20 reports the processed data information to the block chain nodes 60 through the Saas platform 40.
In this embodiment, an operator acquires a video or a photo of an operation site through a camera of the acquisition device 10, because the acquisition device 10 is connected with the processing system 20 and transmits acquired data to the inside of the processing system 20, after the processing system 20 receives a file of the acquired video or photo, the file is encrypted through an MD5 encryption algorithm to obtain an MD5 code of the file, then, because the processing system 20 is connected with the account management module 30, the processing system 20 requests the account management module 30 to sign an MD5 string of the file, the account management module 30 performs a signature algorithm on the MD5 code of the file through an elliptic encryption algorithm ECC (ECC) by using a local private key to generate a signature string, then, the account management module 30 returns the generated signature string to the processing system 20, and the processing system 20 sends the acquired file, the signature string, and the signature string to the processing system 20, Information such as MD5 and signature character strings of the files is reported to the Saas platform 40 through an http protocol, the Saas platform 40 stores the acquired video or photo files on the storage server 50, then the Saas platform 40 reports the acquired public key of the acquisition equipment 10, the MD5 and the signature of the video or the files to the block chain node 60 through an RPC protocol, the block chain node 60 verifies whether the signature character strings and the public key are matched through a signature verification algorithm of an elliptic crypto algorithm ECC, if so, the acquired files MD5 are written into the block chain, and attributes such as time stamps of the current files are recorded.
Further, the collecting device 10 is a camera, and the collecting operation site is shot by the camera through video or pictures.
In the embodiment, during the use process, the camera is arranged to take pictures and videos of the working environment and situation of the site, and send the pictures and videos to the inside of the processing system 20, and the processing system 20 encrypts the collected pictures and videos.
Further, a server 50 is included, and the server 50 is connected to the Saas platform 40 for storing videos or pictures.
In the present embodiment, during the use process, the setting of the server 50 is utilized to smoothly store and collect the collected data, and in the subsequent data query, the data stored in the server 50 can be smoothly searched.
Referring to fig. 2, the present invention provides a technical solution: a data acquisition method based on a block chain intelligent device comprises the following steps:
step S100: capturing the video and photo of the scene by the device 10;
step S200: the processing system 20 encrypts the collected files such as videos or photos;
step S300: the account management module 30 generates a signature character string and sends the signature character string to the processing system 20;
step S400: the file information collected by the processing system 20 is reported to the Saas platform 40 through the http protocol;
step S500: the Saas platform 40 reports the collected information to the block chain node 60 through the RPC protocol;
step S600: and the block chain module matches the acquired information data through an elliptic cryptography algorithm (ECC), and if the acquired information data are matched, the acquired file MD5 is written into the block chain.
In this embodiment, in the using process, an operator acquires a video or a photo of an operation site through a camera of the acquisition device 10, since the acquisition device 10 is connected with the processing system 20 and transmits acquired data to the inside of the processing system 20, after the processing system 20 receives a file of the acquired video or photo, the file is encrypted through an MD5 encryption algorithm to obtain an MD5 code of the file, then, since the processing system 20 is connected with the account management module 30, the processing system 20 requests the account management module 30 to sign an MD5 string of the file, the account management module 30 performs a signature algorithm on the MD5 code of the file through an elliptic encryption algorithm ECC and a local private key to generate a signature string, then, the account management module 30 returns the generated signature string to the processing system 20, and the processing system 20 sends the acquired file back to the processing system 20, Information such as MD5 and signature character strings of the files is reported to the Saas platform 40 through an http protocol, the Saas platform 40 stores the acquired video or photo files on the storage server 50, then the Saas platform 40 reports the acquired public key of the acquisition equipment 10, the MD5 and the signature of the video or the files to the block chain node 60 through an RPC protocol, the block chain node 60 verifies whether the signature character strings and the public key are matched through a signature verification algorithm of an elliptic crypto algorithm ECC, if so, the acquired files MD5 are written into the block chain, and attributes such as time stamps of the current files are recorded.
Further, the method comprises initializing equipment, wherein the intelligent equipment is started by a collector for the first time, generates a pair of block chain public and private keys and a block chain address by the intelligent equipment, and writes the private keys into a TEE trusted execution environment in the equipment.
In this embodiment, an operator starts the device for the first time, after the device is started, the acquisition device 10 acquires account information (a blockchain address) of a blockchain from the account management module 30 through the processing system 20, the account management module 30 acquires a local private key, if the account management module 30 detects that there is no local private key, a public and private key pair is generated locally and written into a local trusted environment, and the account management module 30 sends the generated blockchain account address to the processing system 20.
The method further comprises a registration hardware, wherein the registration hardware is used for collecting information and a block chain address of equipment registered by personnel on the Web service node, and the Web service node writes the registration information of the intelligent equipment into an intelligent contract of the block chain.
In the embodiment, an operation manager logs in the Saas platform 40 by using an administrator account password on a browser, the operation manager submits a request for registering equipment in the Saas platform 40, the Saas platform 40 acquires a public and private key of a block chain corresponding to a preset administrator account, signs the equipment name and the address information of the block chain by using an elliptic crypto algorithm (ECC) and the private key to generate a signature character string, the Saas platform 40 reports the public key, the equipment name, the address of the block chain of the equipment, the signature and other information to the block chain link point 60 by using an RPC protocol, and the block chain link point 60 verifies whether the public key is matched with the signature algorithm; and if the device name and the device block chain address information are matched, storing the device name and the device block chain address information into a block chain intelligent contract.
Further, the method also comprises data query, wherein a collection person queries historical collection records on the Web service node, and the Web service node obtains the collection records of the collection device 10 from the blockchain Baas.
In the embodiment, an operation manager logs in the Saas platform 40 through a browser, and queries a collection record of the device at the background of the Saas platform 40 according to a block chain address of the device, the Saas platform 40 queries the collection record to the block chain link points 60 through an RPC interface, the block chain link points 60 are screened according to the block chain address, data records (MD 5, timestamp, etc.) collected by the address are recorded, the Saas platform 40 finds http path URLs stored in the file through feature codes of MD5 according to the obtained data, and the Saas platform 40 presents the collected record to the collection manager in the form of videos and pictures through an http protocol.
Further, in step S200, the processing system 20 encrypts the file by using the MD5 encryption algorithm to obtain the MD5 code of the file.
In the present embodiment, during the use, the MD5 encryption algorithm is set, so that the MD5 code can be generated smoothly, and the MD5 code and the signature string declared by the account management module 30 are sent to the Saas platform 40 in synchronization.
Further, in step S300, the Saas platform 40 obtains a public and private key system of the block chain corresponding to the preset administrator account, and signs the device name and the address information of the block chain by using the elliptic cryptography algorithm ECC and the private key to generate a signature character string.
In the present embodiment, by generating the signature character string, when the block link point 60 is in the process of verification, it is verified whether the signature character string and the public key are matched; and if the current file is matched with the acquisition file MD5, writing the acquisition file MD5 into the block chain, and recording the time stamp and other attributes of the current file.
Further, the file information in step S400 includes the public key of the acquisition device 10, the device name, the device block chain address, and the signature string.
In this embodiment, uploading of the file information is used to facilitate subsequent matching of the blockchain node 60, so that the blockchain node 60 can more smoothly determine the matching result between the signature string and the public key.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A data acquisition system based on a block chain intelligent device comprises an acquisition device, a processing system in data connection with the acquisition device, an account management module for generating a signature character string, a Saas platform connected with the processing system, and a block chain node in data connection with the Saas, and is characterized in that: the information acquired by the acquisition equipment is sent to the inside of the processing system for encryption, the account management module is connected with the processing system, and the processing system reports the processed data information to the block chain node through the Saas platform.
2. The system of claim 1, wherein the system further comprises: the acquisition equipment is a camera, and videos or pictures are shot on the acquisition operation site through the camera.
3. The system of claim 2, wherein the system further comprises: the system also comprises a server, wherein the server is connected with the Saas platform and used for storing videos or pictures.
4. A data acquisition method based on a block chain intelligent device is characterized in that: the method comprises the following steps:
step S100: shooting videos and pictures on site by the acquisition equipment;
step S200: the processing system encrypts collected files such as videos or photos;
step S300: the account management module generates a signature character string and sends the signature character string to the processing system;
step S400: the file information collected by the processing system component is reported to the Saas platform through an http protocol;
step S500: the Saas platform reports the acquired information to the block chain node through an RPC protocol;
step S600: and the block chain module matches the acquired information data through an elliptic cryptography algorithm (ECC), and if the acquired information data are matched, the acquired file MD5 is written into the block chain.
5. The intelligent device data acquisition method based on the block chain as claimed in claim 4, wherein: the intelligent block chain system further comprises initialization equipment, wherein the intelligent equipment is started by a collector for the first time, generates a pair of block chain public and private keys and a block chain address, and writes the private key into a TEE trusted execution environment in the equipment.
6. The intelligent device data acquisition method based on the block chain as claimed in claim 4, wherein: the intelligent device management system further comprises registration hardware, wherein the registration hardware is used for collecting information and block chain addresses of equipment registered on the Web service node by personnel, and the Web service node writes the registration information of the intelligent equipment into an intelligent contract of the block chain.
7. The intelligent device data acquisition method based on the block chain as claimed in claim 4, wherein: the method also comprises data query, wherein a collection person queries historical collection records on the Web service node, and the Web service node obtains the collection records of the collection equipment from the blockchain Baas.
8. The intelligent device data acquisition method based on the block chain as claimed in claim 4, wherein: in step S200, the processing system encrypts the file through the MD5 encryption algorithm to obtain the MD5 code of the file.
9. The intelligent device data acquisition method based on the block chain as claimed in claim 4, wherein: in step S300, the Saas platform obtains a public and private key system of the block chain corresponding to a preset administrator account, and signs the device name and address information of the block chain by using an elliptic cryptosystem ECC and a private key to generate a signature character string.
10. The intelligent device data acquisition method based on the block chain as claimed in claim 4, wherein: the file information in step S400 includes a public key of the acquisition device, a device name, a device block chain address, and a signature string.
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| CN201910959791.3A CN110808959A (en) | 2019-10-10 | 2019-10-10 | Intelligent equipment data acquisition system and method based on block chain |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112243100A (en) * | 2020-09-30 | 2021-01-19 | 重庆兴创巢科技发展有限责任公司 | Video recording method for real-time recovery of mobile terminal |
| CN113098879A (en) * | 2021-04-06 | 2021-07-09 | 北京众享比特科技有限公司 | Method, system and block chain network for preventing back end from tampering uplink data |
| CN113221143A (en) * | 2020-04-24 | 2021-08-06 | 支付宝(杭州)信息技术有限公司 | Information processing method, device and equipment |
| CN113672994A (en) * | 2021-09-03 | 2021-11-19 | 中国联合网络通信集团有限公司 | Cooking equipment data management method, device and system based on block chain |
| CN114189028A (en) * | 2021-12-07 | 2022-03-15 | 四川启睿克科技有限公司 | Internet of things passive block chain data acquisition device and data acquisition method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512653A (en) * | 2018-04-18 | 2018-09-07 | 成都零光量子科技有限公司 | A kind of electronic evidence acquisition and method of servicing based on block chain |
| CN108650077A (en) * | 2018-05-17 | 2018-10-12 | 深圳前海微众银行股份有限公司 | Information transferring method, terminal, equipment based on block chain and readable storage medium storing program for executing |
| CN110097373A (en) * | 2019-03-18 | 2019-08-06 | 杭州特股软件开发有限公司 | The traceability system and method combined based on block chain with Internet of Things |
-
2019
- 2019-10-10 CN CN201910959791.3A patent/CN110808959A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512653A (en) * | 2018-04-18 | 2018-09-07 | 成都零光量子科技有限公司 | A kind of electronic evidence acquisition and method of servicing based on block chain |
| CN108650077A (en) * | 2018-05-17 | 2018-10-12 | 深圳前海微众银行股份有限公司 | Information transferring method, terminal, equipment based on block chain and readable storage medium storing program for executing |
| CN110097373A (en) * | 2019-03-18 | 2019-08-06 | 杭州特股软件开发有限公司 | The traceability system and method combined based on block chain with Internet of Things |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113221143A (en) * | 2020-04-24 | 2021-08-06 | 支付宝(杭州)信息技术有限公司 | Information processing method, device and equipment |
| CN112243100A (en) * | 2020-09-30 | 2021-01-19 | 重庆兴创巢科技发展有限责任公司 | Video recording method for real-time recovery of mobile terminal |
| CN113098879A (en) * | 2021-04-06 | 2021-07-09 | 北京众享比特科技有限公司 | Method, system and block chain network for preventing back end from tampering uplink data |
| CN113672994A (en) * | 2021-09-03 | 2021-11-19 | 中国联合网络通信集团有限公司 | Cooking equipment data management method, device and system based on block chain |
| CN113672994B (en) * | 2021-09-03 | 2023-12-01 | 中国联合网络通信集团有限公司 | Cooking equipment data management method, device and system based on blockchain |
| CN114189028A (en) * | 2021-12-07 | 2022-03-15 | 四川启睿克科技有限公司 | Internet of things passive block chain data acquisition device and data acquisition method |
| CN114189028B (en) * | 2021-12-07 | 2023-07-07 | 四川启睿克科技有限公司 | Internet of things passive blockchain data acquisition device and data acquisition method |
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Application publication date: 20200218 |