CN113987530A - Data transmission method and system based on block chain - Google Patents
Data transmission method and system based on block chain Download PDFInfo
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- CN113987530A CN113987530A CN202111225929.0A CN202111225929A CN113987530A CN 113987530 A CN113987530 A CN 113987530A CN 202111225929 A CN202111225929 A CN 202111225929A CN 113987530 A CN113987530 A CN 113987530A
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Abstract
The invention relates to a data transmission method and a data transmission system, belongs to the technical field of block chains, and particularly relates to a data transmission method and a data transmission system based on a block chain. The method comprises the following steps: encrypting data to be linked by using block chain encryption information to obtain first encrypted data; encrypting the first encrypted data by using an original secret key of the data acquisition equipment to obtain second encrypted data; and transmitting the second encrypted data to a data acquisition platform for data analysis service based on an NBIOT protocol. Therefore, the invention has the advantages that: the method and the device have the advantages that the data are not intercepted or even tampered in the transmission process from the terminal to the block chain, the realization is easy, the universality is strong, and the method and the device are applicable to various scenes of the Internet of things such as water meters and electric meters.
Description
Technical Field
The invention relates to a data transmission method and a data transmission system, belongs to the technical field of block chains, and particularly relates to a data transmission method and a data transmission system based on a block chain.
Background
Under the premise, whether the data is credible or not and whether the data is falsified in the data transmission and storage processes become pain problems and challenges of benefit-related parties. Aiming at the problems and the challenges, in the prior art, by utilizing the characteristics of centralization, non-tampering and traceability of a block chain technology, a construction idea and a method of a smart water affair block chain BaaS (block chain as a Service) are provided, and the problem of low credibility of water affair data is well solved.
However, how to ensure that data is not intercepted or even tampered in the transmission process from the terminal water meter to the block chain is the technical problem which needs to be solved urgently at present when water meter data is used as data of the internet of things.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
The invention mainly aims to solve the technical problems in the prior art and provides a data transmission method and system based on a block chain. The system and the method can ensure that data is not intercepted or even tampered in the process of acquiring the block chain from the terminal and transmitting the block chain, are easy to realize, have strong universality and can be suitable for various scenes of the Internet of things such as water meters, electric meters and the like.
In order to solve the problems, the scheme of the invention is as follows:
a data transmission method based on a block chain comprises the following steps:
encrypting data to be linked by using block chain encryption information to obtain first encrypted data;
encrypting the first encrypted data by using an original secret key of the data acquisition equipment to obtain second encrypted data;
and transmitting the second encrypted data to a data acquisition platform for data analysis service based on an NBIOT protocol.
Preferably, in the above data transmission method based on a blockchain, the first encrypted data is encapsulated based on a TLV format and then encrypted based on an original key of the data acquisition device to obtain second encrypted data.
A data transmission method based on a block chain comprises the following steps:
analyzing the received second encrypted data sent by the data acquisition equipment by using the original key of the data acquisition equipment;
reading first encrypted data and version number information of data acquisition equipment from the analyzed second encrypted data, wherein the first encrypted data is obtained by encrypting by using block chain encryption information;
and sending the first encrypted data and the version number information of the data acquisition equipment to a block chain BaaS server.
A data transmission system based on NBIOT and blockchains, comprising:
the data acquisition equipment is connected with the data analysis end through the NBIOT platform and used for encrypting the data to be linked by using block chain encryption information to obtain first encrypted data and encrypting the first encrypted data by using an original secret key of the data acquisition equipment to obtain second encrypted data; transmitting the second encrypted data to a data analysis server based on an NBIOT protocol;
the data analysis server is connected with the data acquisition equipment platform and the block chain BaaS server and used for analyzing the second encrypted data by using the original key of the data acquisition equipment so as to read the first encrypted data and the version number information of the data acquisition equipment; sending the first encrypted data and version number information of the data acquisition equipment to a block chain BaaS server;
and the BaaS server is connected with the block chain system and used for searching a block chain key corresponding to the data acquisition equipment according to the received version number information of the data acquisition equipment so as to analyze the first encrypted data and transmit the data to be linked to the block chain system.
Preferably, in the data transmission system based on NBIOT and the blockchain, the blockchain encryption information is obtained based on an asymmetric encryption rule, and specifically:
the data acquisition equipment platform sends version information and an equipment ID number of the data acquisition equipment to a block chain BaaS server;
and the block chain BaaS server generates a key pair according to the version information and the equipment ID number, and simultaneously sends a public key in the key pair to the data acquisition equipment platform.
Preferably, in the data transmission system based on NBIOT and the blockchain, the blockchain BaaS server persistently stores the version information, the ID number of the user equipment, and the key pair, and binds and pairs the user equipment with a corresponding private key and a corresponding wallet in the blockchain system.
Preferably, in the data transmission system based on NBIOT and the blockchain, the blockchain encryption information is obtained based on a symmetric encryption rule, and specifically:
the data acquisition equipment platform sends information such as IMEI, IMSI, version number and the like of the data acquisition equipment to a block chain BaaS server;
the block chain BaaS server generates a 128-bit key according to information such as IMEI, IMSI, version number and the like; while distributing keys to the data collection device platform.
Preferably, in the data transmission system based on NBIOT and the blockchain, the blockchain BaaS server persistently stores the IMEI, the IMSI, the version number, and the secret key, and binds and pairs the user equipment and the corresponding private key and wallet in the blockchain system.
Preferably, in the data transmission system based on NBIOT and the block chain, the data acquisition device platform is a water consumption information acquisition platform, and the data acquisition device is a water meter.
Preferably, in the data transmission system based on NBIOT and the blockchain, the data analysis server and the blockchain BaaS server are implemented based on MQTT protocol message queue middleware.
Therefore, the invention has the advantages that: the method and the device have the advantages that the data are not intercepted or even tampered in the transmission process from the terminal to the block chain, the realization is easy, the universality is strong, and the method and the device are applicable to various scenes of the Internet of things such as water meters and electric meters.
Drawings
The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the invention and to enable a person skilled in the pertinent art to make and use the disclosure.
Fig. 1 illustrates a transmission node from a terminal water meter to a block chain BaaS service and a corresponding protocol system in an embodiment of the present invention;
fig. 2 illustrates a key generation and distribution diagram based on a KPI scheme (asymmetric encryption rule) in an embodiment of the present invention;
fig. 3 illustrates a schematic diagram of key generation and distribution based on hardware information (symmetric encryption rule) in the embodiment of the present invention;
fig. 4 illustrates a schematic diagram of a dual encryption model in an embodiment of the present invention.
Embodiments of the present invention will be described with reference to the accompanying drawings.
Detailed Description
Examples
The water meter data encryption and decryption model based on the NBIot and blockchain technology in the embodiment comprises a protocol system which is formed by all nodes in a transmission link from a water meter data acquisition end to a blockchain BaaS service and a plurality of protocols involved in the transmission process.
The embodiment provides a special data protocol label for writing block chain data (water meter health state data) based on an NBIot protocol and a block chain water meter data encryption and decryption model, and the scheme better solves the problem that how the prepositive analysis service distinguishes which data need to be written into the block chain in massive water meter data.
In this embodiment, one data encryption and decryption model based on the NBIot protocol and the block chain water meter proposes two optional encryption rules, that is: (1) an asymmetric cryptographic algorithm encryption rule; (2) encryption rules based on symmetric algorithms and hardware information. On the basis of selecting the encryption rule, a double encryption model is provided to ensure the security and tamper resistance of the transmission process of the data to be uplink from the water meter end to the block chain BaaS service. Traditional water meter data are transmitted back to the Internet of things platform from a water meter end, the water meter data are encrypted by adopting an AES algorithm in a built-in chip of the water meter, and the data are decrypted in the Internet of things platform. The invention improves the method, firstly adopts the rule (1) or (2) to encrypt the data with the block chain label to obtain the ciphertext, and adopts the AES algorithm to encrypt the ciphertext on the basis of the ciphertext.
This embodiment is further described below with reference to fig. 1-4.
As shown in fig. 1, the water meter data encryption and decryption model based on NBIot and the blockchain technology provided in this embodiment includes (1) each node in a transmission link from a collection end to a blockchain BaaS service; (2) and a protocol system formed by a plurality of protocols involved in the transmission process.
The water meter data is generated at the intelligent water meter of the terminal, and the transmission process comprises three steps.
Step 1, water meter data is transmitted back to a NBIot platform of a telecom operator through an NB card, and in the transmission step, the water meter data is packaged by an NBIot protocol;
step 2, water meter data is transmitted back to a data analysis service through an NBIot platform, in the transmission step, the water meter data is packaged through a COAP protocol, and an HTTP network request is periodically and actively sent by the analysis service for extraction;
and step 3, sending the water meter data to a block chain BaaS service by the data analysis service, wherein in the step, the data interaction between the data analysis service and the block chain BaaS service is completed through an MQTT protocol.
In this embodiment, the specific implementation method of step 3 may be selected as the following steps:
step 301, identifying the data to be linked by the data analysis service, and pushing the data to the message queue server;
step 302, the connection data parsing service and the block chain BaaS service are based on MQTT protocol message queue middleware. The middleware adopts a specific implementation technology of RabbitMQ, adopts a message distribution mode point-to-point mode, adopts data analysis service as a producer, adopts block chain BaaS service as a consumer, adopts the producer to push data to a queue, adopts the consumer to periodically and actively pull the data, deletes the message in the queue after confirmation, and only sends one message to one consumer;
and step 303, pulling the water meter data from the message queue server by the blockchain BaaS service, checking the validity and the integrity, and writing the data into the blockchain system.
Referring to table 1 and table 2, where table 1 is data to be parsed received by the data parsing server, the data is in TLV format, a Tab field in the TLV data format identifies a data type, the data parsing service also determines that the data is blockchain data according to the Tab field, and if the Tab field is Tag0x0A, the data is blockchain data. Types of Tab include in particular: the method comprises the following steps of Tag1 basic data, Tag2 real-time data, Tag3 periodic data, Tag4 dense data, Tag5 alarm data, Tag6 water meter parameters, Tag7 query information, Tag8 parameter setting results, Tag9 transparent transmission data and Tag0x0A block chain data. And if the data is the block chain data, sending the data to a block chain BaaS service, and sending other types of data to a water consumption information acquisition platform.
TABLE 1 TLV data format
Table 2 is a detailed description of the block chain data protocol, the IMEI and IMSI are identification fields of the water meters, and the IMEI/IMSI of each water meter is unique; the encryption algorithm generates a secret key of the water meter according to the batch number, the IMEI or the IMSI; the alarm data field is information specifically written to the blockchain system.
TABLE 2 Block chain data protocol description (Tag label: 0x0A)
As shown in fig. 2-4, the core of this implementation includes providing two optional encryption rules, 1, an encryption rule based on an asymmetric cryptographic algorithm; 2. based on symmetric algorithm + hardware information encryption rules. Further, on the basis of the encryption rule, a double encryption model is provided to ensure the security and tamper resistance of the transmission process of the data to be uplink from the water meter end to the block chain BaaS service. The encryption and decryption model in this embodiment includes two modules: (1) dividing the data sensitivity requirements into a key scheme based on KPI and a key scheme based on hardware information; (2) and encrypting data at the water meter end according to a corresponding secret key scheme, and decrypting the data at the BaaS server end in the block chain.
Referring to fig. 2, a key generation and distribution process based on KPI scheme (asymmetric encryption rule) that uses ECC, SM2 asymmetric encryption algorithm to encrypt blockchain data is shown. The key pair (public key and private key) is generated by the blockchain BaaS service according to a water meter and a secret key and is distributed to a manufacturer, equipment encrypts blockchain data by using the public key, and the data is transmitted to the blockchain service and is decrypted by using the private key, wherein the specific flow is as follows:
step 1, a manufacturer sends a version batch number of a water meter and an IMEI/IMSI of the water meter to a block chain BaaS service through a water information acquisition platform, wherein the length of the version number is 1 byte, and the length of the IMEI of the water meter is 8 bytes;
step 2, the block chain BaaS service generates a key pair according to the version number and the water meter IMEI/IMSI;
step 3, the public key of the water meter is distributed to a water consumption information acquisition platform by the block chain BaaS service and then forwarded to the corresponding water meter by the platform;
and 4, persistently storing the version number, the water meter IMEI and the key pair by the blockchain BaaS service, and binding and pairing the water meter (IMEI, a public key and a private key) and the water meter in a blockchain system (private key and wallet).
Referring to fig. 3, a distribution flow is generated based on hardware information (symmetric encryption rule) key.
The scheme adopts AES and SM4 symmetric encryption algorithm to encrypt block chain data. The secret key is generated by the block chain BaaS service according to a water meter and a secret key and is distributed to a manufacturer, the equipment encrypts block chain data by using the secret key, and the data is transmitted to the block chain service to be decrypted by using the secret key, wherein the specific flow is as follows:
step 1, encrypting block chain data by adopting an AES or SM4 encryption algorithm;
step 2, the water information acquisition platform provides information such as IMEI, IMSI, version number and the like;
step 3, the block chain BaaS service generates a 128-bit key according to the IMEI, the IMSI, the version number and other information;
step 4, the block chain BaaS service distributes the secret key to a water consumption information acquisition platform;
and step 5, persistently storing the IMEI, the IMSI, the version number and the secret key of the blockchain BaaS service, and binding and pairing the water meter (the IMEI and the secret key) and the water meter in a blockchain system (a private key and a wallet).
Referring to fig. 4, a block chain data transmission, encryption and decryption algorithm model flow is shown. The algorithm model encrypts the blockchain data by using the encryption rules shown in fig. 2 or fig. 3, the encrypted blockchain data is transmitted back to the operator platform, the data analysis service and the blockchain BaaS service, and finally the data chaining is completed by decrypting in the blockchain BaaS service. The specific flow is as follows:
step 1, (1) adopting KPI-based scheme encryption, and using a block chain public key to encrypt block chain data, (2) adopting hardware-based information scheme encryption, and using a block chain secret key to encrypt the block chain data to obtain block chain encrypted data;
step 2, encrypting information such as the block chain encrypted data, the version number and the like and other basic data by using the original secret key of the water meter to obtain encrypted data of the water meter;
step 3, the encrypted data of the water meter is transmitted to a data analysis service of a water collection platform through a telecom coach platform;
step 4, the data analysis service analyzes the encrypted data by using the original key of the water meter, and takes out the block chain encrypted data, the version number and the IMEI/IMSI information;
step 5, pushing the data taken out in the step 4 to a block chain Bass service;
and 6, finding out a corresponding key for decryption by the Bass service according to the IMEI/IMSI of the water meter, and realizing data chaining.
As can be seen from the above description, the water meter data encryption and decryption model based on NBIot and the blockchain technology in this embodiment includes a protocol system formed by all nodes in a transmission link from a collection end to a blockchain BaaS service, and a plurality of protocols involved in the transmission process.
The embodiment provides a special data protocol label for writing block chain data (water meter health state data) based on an NBIot protocol and a block chain water meter data encryption and decryption model, and the scheme better solves the problem that how the prepositive analysis service distinguishes which data need to be written into the block chain in massive water meter data.
In this embodiment, one data encryption and decryption model based on the NBIot protocol and the block chain water meter proposes two optional encryption rules, that is: (1) an asymmetric cryptographic algorithm encryption rule; (2) encryption rules based on symmetric algorithms and hardware information. On the basis of selecting the encryption rule, a double encryption model is provided to ensure the security and tamper resistance of the transmission process of the data to be uplink from the water meter end to the block chain BaaS service. Traditional water meter data are transmitted back to the Internet of things platform from a water meter end, the water meter data are encrypted by adopting an AES algorithm in a built-in chip of the water meter, and the data are decrypted in the Internet of things platform. The invention improves the method, firstly adopts the rule (1) or (2) to encrypt the data with the block chain label to obtain the ciphertext, and adopts the AES algorithm to encrypt the ciphertext on the basis of the ciphertext.
In this embodiment, while, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as may be understood by those of ordinary skill in the art.
It is noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A data transmission method based on a block chain is characterized by comprising the following steps:
encrypting data to be linked by using block chain encryption information to obtain first encrypted data;
encrypting the first encrypted data by using an original secret key of the data acquisition equipment to obtain second encrypted data;
and transmitting the second encrypted data to a data acquisition platform for data analysis service based on an NBIOT protocol.
2. The blockchain-based data transmission method according to claim 1, wherein the first encrypted data is encapsulated based on TLV format and then encrypted based on an original key of a data acquisition device to obtain second encrypted data.
3. A data transmission method based on a block chain is characterized by comprising the following steps:
analyzing the received second encrypted data sent by the data acquisition equipment by using the original key of the data acquisition equipment;
reading first encrypted data and version number information of data acquisition equipment from the analyzed second encrypted data, wherein the first encrypted data is obtained by encrypting by using block chain encryption information;
and sending the first encrypted data and the version number information of the data acquisition equipment to a block chain BaaS server.
4. A data transmission system based on NBIOT and blockchain, comprising:
the data acquisition equipment is connected with the data analysis end through the NBIOT platform and used for encrypting the data to be linked by using block chain encryption information to obtain first encrypted data and encrypting the first encrypted data by using an original secret key of the data acquisition equipment to obtain second encrypted data; transmitting the second encrypted data to a data analysis server based on an NBIOT protocol;
the data analysis server is connected with the data acquisition equipment platform and the block chain BaaS server and used for analyzing the second encrypted data by using the original key of the data acquisition equipment so as to read the first encrypted data and the version number information of the data acquisition equipment; sending the first encrypted data and version number information of the data acquisition equipment to a block chain BaaS server;
and the BaaS server is connected with the block chain system and used for searching a block chain key corresponding to the data acquisition equipment according to the received version number information of the data acquisition equipment so as to analyze the first encrypted data and transmit the data to be linked to the block chain system.
5. The NBIOT and blockchain based data transmission system of claim 4, wherein the blockchain encryption information is obtained based on asymmetric encryption rules, specifically:
the data acquisition equipment platform sends version information and an equipment ID number of the data acquisition equipment to a block chain BaaS server;
and the block chain BaaS server generates a key pair according to the version information and the equipment ID number, and simultaneously sends a public key in the key pair to the data acquisition equipment platform.
6. The NBIOT and blockchain based data transmission system of claim 5, wherein the blockchain BaaS server persistently stores version information, user equipment ID number and key pair, and binds and pairs the user equipment with a corresponding private key and wallet in the blockchain system.
7. The NBIOT and blockchain based data transmission system of claim 4, wherein the blockchain encryption information is obtained based on symmetric encryption rules, specifically:
the data acquisition equipment platform sends information such as IMEI, IMSI, version number and the like of the data acquisition equipment to a block chain BaaS server;
the block chain BaaS server generates a 128-bit key according to information such as IMEI, IMSI, version number and the like; while distributing keys to the data collection device platform.
8. The NBIOT and blockchain based data transmission system of claim 7, wherein the blockchain BaaS service persistently stores IMEI, IMSI, version number and key, and binds and pairs the user equipment with the corresponding private key and wallet in the blockchain system.
9. The NBIOT and blockchain based data transmission system of claim 4, wherein the data collection device platform is a water consumption information collection platform and the data collection device is a water meter.
10. The NBIOT and blockchain based data transmission system of claim 4, wherein the data parsing server and the blockchain BaaS server are implemented based on MQTT protocol message queue middleware.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114546271A (en) * | 2022-02-18 | 2022-05-27 | 蚂蚁区块链科技(上海)有限公司 | Data reading and writing method, device and system based on block chain |
| CN117424760A (en) * | 2023-12-18 | 2024-01-19 | 西安旌旗电子股份有限公司 | Ammeter management method, control device and management device based on Internet of things |
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2021
- 2021-10-21 CN CN202111225929.0A patent/CN113987530A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114546271A (en) * | 2022-02-18 | 2022-05-27 | 蚂蚁区块链科技(上海)有限公司 | Data reading and writing method, device and system based on block chain |
| CN114546271B (en) * | 2022-02-18 | 2024-02-06 | 蚂蚁区块链科技(上海)有限公司 | Data read-write method, device and system based on block chain |
| CN117424760A (en) * | 2023-12-18 | 2024-01-19 | 西安旌旗电子股份有限公司 | Ammeter management method, control device and management device based on Internet of things |
| CN117424760B (en) * | 2023-12-18 | 2024-03-12 | 西安旌旗电子股份有限公司 | Ammeter management method, control device and management device based on Internet of things |
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