CN116668066B - Smart grid privacy protection method and device based on blockchain, nonvolatile storage medium and electronic device - Google Patents
Smart grid privacy protection method and device based on blockchain, nonvolatile storage medium and electronic device Download PDFInfo
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- 238000013480 data collection Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims description 7
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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
- H04L63/0407—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the identity of one or more communicating identities is hidden
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
- G06F21/6245—Protecting personal data, e.g. for financial or medical purposes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
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- H—ELECTRICITY
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- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
Abstract
The invention discloses a block chain-based intelligent power grid privacy protection method, which comprises the following steps: generating a secret key, namely generating a public key and a private key for each user by using the secret key generator, and taking the public key as a virtual ID of the user; data collection, namely collecting the electricity consumption and other information of a user at intervals of a specific period of time; after receiving the broadcast information, other users use a bloom filter to carry out message verification; the miner selects, and a user serving as the miner is selected through a miner selection algorithm; after a miner is selected, all transactions are recorded in a new block of a block chain, and the miner can send the new block to other users for block verification; and (3) block verification, wherein each user verifies the authenticity of the information recorded in the received block, and after verification, the power consumption information is sent to a power supply company. By the method, the user electricity privacy can be protected, the integrity of the electricity data can be guaranteed, and the user electricity data can be effectively uploaded to a power supply company.
Description
Technical Field
The invention relates to the field of computer network communication, in particular to a block chain-based intelligent power grid privacy protection method and device and application thereof.
Background
With the progress of information and communication technology (ict), intelligent applications such as intelligent home, intelligent metering, intelligent parking, intelligent building and the like are gradually developed. All of these applications, as well as other applications not mentioned herein, are based on the need for electrical energy. For example, various devices operating in intelligent home require power supply, and it is also important to collect the power consumption data of a user in real time after the power supply company meets the power consumption requirements of the user. Smart meters are smart devices that a power company installs at a customer's home and can collect electricity data in real time, measure, collect, and analyze the electricity data, and communicate the data to the power company on demand or on schedule in near real time. Based on the collected data, the power company may provide dynamic pricing, customers may benefit from this offer by modifying their power usage behavior, which will help customers dynamically adjust their power usage to avoid alarming, and in addition, the power company may utilize the collected data to improve its services.
However, if such data is not properly protected, data collected and transmitted to the power company in near real time may reveal the privacy of the user. For example, by intermediately stealing user power usage, a hacker may analyze the user's power usage profile and may determine if the user is at home and cause damage (e.g., theft).
Therefore, how to protect the privacy of the user and to timely and accurately upload the electricity consumption data of the user to the power supply company is a problem to be solved.
Disclosure of Invention
In view of the above, the technical problem to be solved by the invention is to overcome the defect of insufficient confidentiality of the existing power consumption data transmission, thereby providing a smart grid privacy protection method based on block chains.
According to a first aspect, an embodiment of the present invention discloses a blockchain-based smart grid privacy protection method, including: generating a secret key, namely generating a public key and a private key for each user by using a secret Key Generator (KG), and taking the public key as a virtual ID of the user; collecting data, namely collecting the electricity consumption and other information of the user at intervals of a specific period of time, and broadcasting the information to other users after encryption processing; after receiving the broadcast information, other users use a bloom filter to carry out message verification; the miner selects, and a user serving as the miner is selected through a miner selection algorithm; after a miner is selected, all transactions (electricity consumption data) are recorded in a new block of the blockchain, and the miner can send the new block to other users for block verification; and (3) block verification, wherein each user verifies the authenticity of the information recorded in the received block, and after verification, the power consumption information is sent to a power supply company.
Optionally, the key generation process includes: the KG initializes the system by generating a key for each user, who first sends each user its unique identifier (true identity) to the KG for registration, and when the user sends its identifier to the KG, it runs the elliptic curve cryptography algorithm implemented by the KG described above to generate the public and private keys. Then, the user takes the public key as the virtual ID, and in addition, the KG is also responsible for creating a bloom filter to quickly and efficiently judge whether the ID belongs to the system.
Optionally, the data collection includes: during the data collection process, the identity of the user is masked by using a virtual ID for each user instead of using the user's real identity. It is assumed that a new block is generated every 10 minutes, and thus, every 10 minutes, every user (smart meter) concatenates its electricity consumption data, time stamp, and virtual ID thereof (the user's public key as its virtual ID), then hashes the concatenated data, and encrypts the result of the operation using the private key. A digital signature is then obtained from the encrypted data and the public key. Finally, the electricity consumption data, the time stamp, the virtual ID, and the encryption information are transmitted to all users in a plaintext form.
Optionally, the identity authentication includes: when the user receives data generated by the data collection section from another user, hash operation is performed on the power consumption data, the time stamp, and the virtual ID. It then decrypts the encrypted information generated by the data collection section using the sender's public key. The message is authentic if the obtained hash value is equal to the decrypted hash value.
Optionally, the miner selection includes: a threshold is set and a user who uses more than this threshold will become a mineworker. If there are multiple users, all of these users will act as miners.
Optionally, the block generating includes: after selecting the mineworker, all transactions (electricity usage data) are recorded in a new block of the blockchain, and the mineworker will send the new block to other users for block verification. The mineworker records the following information in the block header: hash of previous block, timestamp, root hash, and virtual ID.
Optionally, the block verification includes: after receiving the new block sent by the miner, the user must verify the authenticity of the information recorded in the received block, and after verification, if there is no error information in the block, each user will add the new block to the account book stored in its data set, and then if all users agree to the record in the new block, the miner will send the electricity consumption information to the power supply company.
The invention also discloses a smart grid privacy protection device based on the blockchain, which is characterized in that:
a key generation module: generating a public key and a private key for each user by using a Key Generator (KG), and taking the public key as a virtual I D of the user;
and a data collection module: collecting the electricity consumption and other information of the user at intervals of a specific period, splicing the information, then carrying out encryption processing by using a private key, and finally broadcasting to other users;
identity authentication module: after receiving the broadcast information, other users decrypt the encrypted information by using the public key, compare the decrypted information with information generated by carrying out hash operation on the user electricity consumption data, the time stamp and the virtual ID transmitted in the plaintext, if the decrypted information is consistent with the information, the information is not tampered during transmission, and meanwhile, a bloom filter is used for verifying whether the virtual ID exists in the electric power system;
a miner selection module: selecting a user serving as a miner through a miner selection algorithm;
the block generation module: after selecting miners, all transactions are recorded in a new block of the blockchain, and the miners send the new block to other users for block verification; the mineworker records the following information in the block header: hash of previous block, timestamp, root hash, virtual ID;
block verification module: after receiving the new block sent by the miner, the user must verify the authenticity of the information recorded in the received block, and after verification, if there is no error information in the block, each user will add the new block to the account book stored in its data set, and then if all users agree to the record in the new block, the miner will send the electricity consumption information to the power supply company.
The invention also discloses a nonvolatile storage medium, which is characterized in that the nonvolatile storage medium comprises a stored program, wherein the program controls equipment where the nonvolatile storage medium is located to execute the method when running.
The invention also discloses an electronic device which is characterized by comprising a processor and a memory; the memory has stored therein computer readable instructions, and the processor is configured to execute the computer readable instructions, wherein the computer readable instructions perform the method described above when executed.
Advantageous effects
By introducing an elliptic curve encryption algorithm to generate a public key and a private key to replace an RSA algorithm with higher complexity when collecting electricity data, the calculated amount of an ammeter is reduced, and a secret key can be generated quickly; by adopting the virtual ID, the privacy of the user is protected; and the block chain technology is introduced to record the electric quantity data, so that the integrity of the electric quantity data is ensured.
Drawings
FIG. 1 is a flowchart of a specific example of a blockchain-based smart grid privacy protection method in an embodiment of the present invention;
FIG. 2 is a flow chart of the selection of miners in an embodiment of the present invention
FIG. 3 is a diagram of a new block according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a network model deployed in an embodiment of the present invention.
Detailed Description
The embodiment of the invention discloses a smart grid privacy protection method based on a blockchain, which comprises the following steps as shown in fig. 1:
step 101: generating a secret key, namely generating a public key and a private key for each user by using a secret Key Generator (KG), and taking the public key as a virtual ID of the user;
the public key and the private key are generated as follows:
elliptic curve Ep (a, b):
y 2 ＝x 3 +ax+b(modp)
where p is a prime number, (x, y) is a point on the elliptic curve and x, y E [0, p-1 ]]A, b are arbitrary constants and 4a 3 +27b 2 ≠0；
An elliptic curve Ep (a, b) is selected, and a point on the elliptic curve is taken as a base point G, and n is the order of G.
The true ID of the user is A, and the private key k is taken as
k＝Amodn
Then generate a public key PK in which
PK＝kG
Illustratively, the data splicing and hash operation in step 102 is as follows:
E sk ＝SHA256(d+t stamp +PK)
wherein SHA256 is hash operation with hash value length of 256 bits, d is user power consumption data, t stamp For time stamp, PK is virtual ID, d, t of user are added stamp And performing hash operation after PK splicing to obtain 256-bit data.
Step 102: collecting data, namely collecting the electricity consumption and other information of the user at intervals of a specific period, splicing the information, then carrying out encryption processing by using a private key, and finally broadcasting the information to other users; during the data collection process, the identity of the user is masked by using a virtual ID for each user instead of using the user's real identity. It is assumed that a new block is generated every 10 minutes, and thus, every 10 minutes, every user (smart meter) concatenates its electricity consumption data, time stamp, and virtual ID thereof (the user's public key as its virtual ID), then hashes the concatenated data, and encrypts the result of the operation using the private key. A digital signature is then obtained from the encrypted data and the public key. Finally, the electricity consumption data, the time stamp, the virtual ID, and the encryption information are transmitted to all users in a plaintext form.
Step 103: after receiving the broadcast information, other users decrypt the encrypted information by using a public key, compare the decrypted information with information generated by carrying out hash operation on the user electricity consumption data, the timestamp and the virtual ID transmitted in the plaintext, if the decrypted information is consistent with the information, the information is not tampered in the transmission process, and meanwhile, a bloom filter is used for verifying whether the virtual ID exists in the power system;
illustratively, the virtual ID verification process using a bloom filter of step 103 is as follows:
for an array composed of n bits, each element of the array is initialized to 0. Given a virtual ID, i independent hash functions h1, h2, h3, hi are first selected, and the hash value for the given virtual ID is calculated using the following formula:
index＝hi(ID)modn
then, the value of the corresponding bit in the array is assigned 1, the operation is performed on the virtual ID during the inspection, the result is compared with the array, if the corresponding bit numbers are all 1, the virtual ID exists in the power system, otherwise, the virtual ID does not exist.
Step 104: the miner selects, through the miner selection algorithm, the user as the miner: fig. 2 is a flow chart of selecting a miner in an embodiment of the invention, wherein the threshold is set as a miner node first, then the electricity consumption of each user is collected and compared, and if the electricity consumption is greater than the threshold, the miner node is set.
Step 105: after a miner is selected, all transactions (electricity consumption data) are recorded in a new block of the blockchain, and the miner can send the new block to other users for block verification; the mineworker records the following information in the block header: the hash value, timestamp, root hash value and virtual ID of the previous block, and the new block diagram is shown in fig. 3. The hash value of the previous block is calculated as follows:
H1＝SHA256(Head1)
where H1 is the hash value of the previous block, SHA256 is a hash operation with a hash value length of 256 bits, and Head1 is the value of the previous block header.
Step 106: block verification includes: after receiving the new block sent by the miner, the user must verify the information recorded in the received block, including checking whether the syntax of the new block data structure is correct, whether the electric quantity of the generating node of the new block head is greater than the threshold value of the miner node, whether the block size is within the allowable range, etc. After verification, if there is no erroneous information in the block, each user will add this new block to the ledger maintained in its dataset, and then if all users agree to the records in this new block, the miners will send the electricity usage information to the power company.
The invention also discloses a smart grid privacy protection device based on the blockchain, which is characterized in that:
a key generation module: generating a public key and a private key for each user by using a Key Generator (KG), and taking the public key as a virtual I D of the user;
and a data collection module: collecting the electricity consumption and other information of the user at intervals of a specific period, splicing the information, then carrying out encryption processing by using a private key, and finally broadcasting to other users;
identity authentication module: after receiving the broadcast information, other users decrypt the encrypted information by using the public key, compare the decrypted information with information generated by carrying out hash operation on the user electricity consumption data, the time stamp and the virtual ID transmitted in the plaintext, if the decrypted information is consistent with the information, the information is not tampered during transmission, and meanwhile, a bloom filter is used for verifying whether the virtual ID exists in the electric power system;
a miner selection module: selecting a user serving as a miner through a miner selection algorithm;
the block generation module: after selecting miners, all transactions are recorded in a new block of the blockchain, and the miners send the new block to other users for block verification; the mineworker records the following information in the block header: hash of previous block, timestamp, root hash, virtual ID;
block verification module: after receiving the new block sent by the miner, the user must verify the authenticity of the information recorded in the received block, and after verification, if there is no error information in the block, each user will add the new block to the account book stored in its data set, and then if all users agree to the record in the new block, the miner will send the electricity consumption information to the power supply company.
For small scale deployments, fig. 4 shows a network model consisting of three layers. The first layer is a sensing layer in which our smart meter is installed for collecting data related to electricity usage. Each smart meter sends its electricity consumption data to the mineworker node selected according to the threshold, and the mineworker aggregates all the data sent and forwards it to the upper layer, corresponding to steps 101-106. The second layer is a network layer, and the data collected by the intelligent electric meter is relayed by the gateway and sent to the power supply company for charging. Communication between the smart meter and the gateway may rely on the use of an emerging low power wide area network, such as LoRaWAN, sigFox, NB-I oT, etc., while the gateway communicates with the power company using a secure standard I P connection. The third layer is a data management layer for processing data sent by the intelligent ammeter.
In summary, the elliptic curve encryption algorithm is introduced to generate the public key and the private key to replace the RSA algorithm with higher complexity when the electricity consumption data are collected, so that the calculated amount of the ammeter is reduced and the secret key can be quickly generated; by adopting the virtual ID, the privacy of the user is protected; and the block chain technology is introduced to record the electric quantity data, so that the integrity of the electric quantity data is ensured.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A smart grid privacy protection method based on a blockchain is characterized by comprising the following steps:
step 101: generating a secret key, namely generating a public key and a private key for each user by using a secret Key Generator (KG), and taking the public key as a virtual ID of the user; the public key and the private key are generated as follows:
elliptic curve Ep (a, b):
y 2 ＝x 3 +ax+b(modp)
where p is a prime number, (x, y) is a point on the elliptic curve and x, y E [0, p-1 ]]A, b are arbitrary constants and 4a 3 +27b 2 Not equal to 0; selecting an elliptic curve Ep (a, b), and taking a point on the elliptic curve as a base point G, wherein n is the order of G;
the true ID of the user is A, and the private key k is taken as
k＝A(modn)
Then generate a public key PK in which
PK＝kG
The data splicing and hash operation process in the step 102 is as follows:
E sk ＝SHA256(d+t stamp +PK)
wherein SHA256 is hash operation with hash value length of 256 bits, d is user power consumption data, t stamp For time stamp, PK is virtual ID, d, t of user are added stamp Performing hash operation after PK splicing to obtain 256-bit data;
step 102: and collecting data, namely collecting the electricity consumption and other information of the user at intervals of a specific period, splicing the information, then carrying out encryption processing by using a private key, and finally broadcasting the information to other users: the data collection includes: masking the identity of the user during data collection by using a virtual ID for each user instead of using the user's real identity; setting to generate a new block every 10 minutes, so that every 10 minutes each user splices the power consumption data, the time stamp and the virtual ID thereof, then carries out hash operation on the spliced data, and encrypts an operation result by using a private key; obtaining a digital signature according to the encrypted data and the public key; finally, sending the electricity consumption data, the time stamp, the virtual ID and the encryption information to all users in a plaintext form;
step 103: after receiving the broadcast information, other users decrypt the encrypted information by using the public key, compare the decrypted information with information generated by carrying out hash operation on the user electricity consumption data, the timestamp and the virtual ID transmitted in the plaintext, if the decrypted information is consistent with the information, the information is not tampered in the transmission process, and meanwhile, a bloom filter is used for verifying whether the virtual ID exists in the power system: for an array consisting of n bits, initializing each element of the array to 0; given a virtual ID, i independent hash functions h1, h2, h3, hi are first selected, and the hash value for the given virtual ID is calculated using the following formula: index=hi (ID) mod n
Then, the value of the corresponding bit in the array is assigned 1, the operation is carried out on the virtual ID during the inspection, the result is compared with the array, if the corresponding bit numbers are all 1, the virtual ID exists in the power system, otherwise, the virtual ID does not exist;
step 104: the miner selects, and a user serving as the miner is selected through a miner selection algorithm; the miner selection includes: setting a threshold value, and enabling a user with the electricity consumption larger than the threshold value to become a miner; if there are multiple users, all of these users will act as miners;
step 105: after a miner is selected, all transactions are recorded in a new block of a block chain, and the miner can send the new block to other users for block verification; the mineworker records the following information in the block header: hash of previous block, timestamp, root hash, virtual ID;
step 106: block verification: after receiving the new block sent by the miner, the user must verify the authenticity of the information recorded in the received block, and after verification, if there is no error information in the block, each user will add the new block to the account book stored in its data set, and then if all users agree to the record in the new block, the miner will send the electricity consumption information to the power supply company.
2. The intelligent power grid privacy protection device based on the blockchain is based on the intelligent power grid privacy protection method based on the blockchain, and is characterized in that:
a key generation module: generating a public key and a private key for each user by using a Key Generator (KG), and taking the public key as a virtual ID of the user;
and a data collection module: collecting the electricity consumption and other information of the user at intervals of a specific period, splicing the information, then carrying out encryption processing by using a private key, and finally broadcasting to other users;
identity authentication module: after receiving the broadcast information, other users decrypt the encrypted information by using the public key, compare the decrypted information with information generated by carrying out hash operation on the user electricity consumption data, the time stamp and the virtual ID transmitted in the plaintext, if the decrypted information is consistent with the information, the information is not tampered during transmission, and meanwhile, a bloom filter is used for verifying whether the virtual ID exists in the electric power system;
a miner selection module: selecting a user serving as a miner through a miner selection algorithm;
the block generation module: after selecting miners, all transactions are recorded in a new block of the blockchain, and the miners send the new block to other users for block verification; the mineworker records the following information in the block header: hash of previous block, timestamp, root hash, virtual ID;
block verification module: after receiving the new block sent by the miner, the user must verify the authenticity of the information recorded in the received block, and after verification, if there is no error information in the block, each user will add the new block to the account book stored in its data set, and then if all users agree to the record in the new block, the miner will send the electricity consumption information to the power supply company.
3. A non-volatile storage medium comprising a stored program, wherein the program when run controls a device in which the non-volatile storage medium resides to perform the method of claim 1.
4. An electronic device comprising a processor and a memory; the memory has stored therein computer readable instructions for execution by the processor, wherein the computer readable instructions when executed perform the method of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310416341.6A CN116668066B (en) | 2023-04-18 | 2023-04-18 | Smart grid privacy protection method and device based on blockchain, nonvolatile storage medium and electronic device |
Applications Claiming Priority (1)
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