61results about How to "Improve immutability" patented technology

The invention provides a lightweight terminal block chain system. The system comprises a plurality of nodes, wherein the nodes comprise a core node and lightweight nodes; the core node is used for participating in block chain consensus, keeping accounts and generating a new block, and the block comprises a block head and a block main body; the lightweight node stores the block head and participates in node discovery, transaction broadcast and transaction validity verification. By adoption of the lightweight terminal block chain system, when a lightweight terminal device accesses the network, the lightweight terminal device participates in the transaction verification, transaction broadcast, block check and other functions of the block chain system, so that the transaction data in the block chain network back up more transaction information that cannot be tampered on more devices, thereby fully utilizing the idle resources of a part of terminal devices, and enhancing the reliability and the non-tampering property of the block chain system. Meanwhile, the system fully considers the limited storage, calculation and network resources of the terminal devices, so that the terminal devices join in the block chain system by the lightweight nodes, that is, maintain the normal operation of the block chain system by very small resource costs.

The invention discloses a method for creating a block chain, a device and a readable storage medium. The methods include: creating rights and interests proof mechanism of block chain; creating a hashtimestamp mechanism using random number policy; based on the formed hash timestamp, establishing a mechanism for preventing block chain bifurcation ; based on the above mechanism and random number strategy, creating each new block on the block chain to form a block chain. The adoption of that technical scheme, Competition among the parties entitled to create new blocks does not control random numbers, so that you cannot gain building-block-first privileges, improving the security and non-tampering of block chain transactions, rights and interests are proportional to the driving force of systemsecurity, based on hash-based timestamp, the person who has the right to keep account eliminates bifurcation with the maximum possibility is decided, punishment mechanism for the creators of historical blocks who do not obey the rules and do not participate in the maintenance of several blocks is established, a fair, stable and efficient block chain trading environment is created, the trust modelis optimized, and a good mechanism is provided to control the chain growth rate.

The invention discloses a coherent information processing method based on a blockchain, and a terminal. The method comprises the following steps: judging whether the terminal is visible in a current blockchain network or not; if the terminal is visible in the current blockchain network, receiving a command of a core node for creating a new block, and receiving and synchronously updating new block information when the command is effective and coherent block information complying with a threshold number; and if the terminal is not visible in the current blockchain network, sending commands to the core node or a complete node at regular times to request the core node or the complete node to send new block information synchronization commands. The method disclosed by the invention has the advantage that the problem in the prior art that a blockchain system cannot utilize a huge number of terminal resources to achieve higher credibility and reliability is solved.

The invention provides a blockchain-based violation event processing method, a system, a device and a storage medium. The method comprises the steps of obtaining violation report information providedby a first vehicle node and stored in a blockchain; obtaining an associated evidence data identifier in the violation report information; obtaining evidence data provided by a second vehicle node andstored in the blockchain according to the evidence data identifier; and determining whether the violation reporting information is valid or not according to the violation reporting information and theassociated certification data. According to the method, violation event data are automatically collected through each vehicle node in the blockchain, credible violation judgment is completed based onthe smart contract, and credibility and tamper resistance of violation judgment are improved based on record information of a plurality of associated blockchain nodes.

The invention relates to a copyright trading method and system based on a block chain technology. The copyright trading method comprises steps: copyright information is edited to generate a trading ID; sales information is inputted, and a trading content is generated according to the trading ID and the sales information; the trading content is acquired and displayed; according to all trading contents, a trading ID which meets a purchasing condition is acquired as a purchasing ID; according to all purchasing IDs and the purchasing information, a purchasing entry order is generated; a corresponding sales entry order and the purchasing entry order are subjected to married deal, and trading of the copyright information is completed. In the embodiment of the invention, the trading process is recorded through the block chain technology, the safety and the non tampering of the trading itself are improved; through enabling the sales side and the purchasing side to be subjected to married deal,the purchasing side can purchase a proper copyright with the most favorable condition, the characteristics of openness and transparency of the block chain make supervision more fair and impartial, decentration of the block chain enables trading to be more direct, quicker and lower in cost, and the rights and the interests of a copyright owner are ensured.

The invention relates to the technical field of supply chain management, in particular to a block chain-based culture product tracing method and system, and the method comprises the following steps: collecting the type, producing area and growth cycle data of culture products, distributing an identifier for each data item, coding the data and the associated identifiers in an upload format, and storing the data and the associated identifiers in a database; and uploading the data to a block chain network through an encryption channel, and generating a coded data record. According to the method, the timestamps and the data records are bound, each record is processed by using the hash function, and the security of each supply chain node is verified, so that not only is the integrity of data processing improved, but also an effective verification means is provided for consumers, and the security of the consumers is improved by decrypting and verifying the encrypted data. The security and privacy protection of data in storage and transmission are ensured, the production and circulation process of products is tracked through a block chain query function, the food security is improved, the supervision compliance is enhanced, and a powerful tool is provided for solving fraud and pollution problems in a supply chain.

The invention discloses a medical information sharing authentication method based on a block chain, and relates to the technical field of the block chain. The method comprises the following steps: a doctor diagnoses a patient and stores a whole-course diagnosis result in a system provided by a medical institution, the doctor cannot create an electronic medical record, only the medical institutioncan create the electronic medical record and store an electronic medical record signature in an off-chain database, and then the storage address signature of the electronic medical record in the off-chain database is broadcasted to a block chain; visitors for the block chain and the off-chain database are only medical institutions; a doctor submits an application to a medical institution where thedoctor is located, the medical institution accesses the data on the block chain to obtain the address of the patient electronic medical record in the off-chain database, accesses detailed data of thepatient electronic medical record in the off-chain database, and finally sends the detailed data to a legal doctor through an internal system of the medical institution. The method has the advantagesof no forgery, anonymity, no tampering, no repudiation, traceability and the like.

A system and method for resolving contract disputes utilitizes one or more computing devices to receive a dispute resolution request, invite other parties to submit a response to the dispute resolution request, and submit the dispute to a plurality of delegates based on the type of dispute and the qualifications of the delegates. The delegates provide dispute resolution decisions, and a consensus algorithm is applied to the decisions to arrive at a consensus contract outcome. A record of the consensus contract outcome, including the disputed contract and the nature of the dispute are recorded on a permissioned blockchain and also optionally recorded on an external blockchain distributed ledger.

The invention provides a fire identification method and system based on a block chain. The method comprises the steps of obtaining a standard fire image U1, and segmenting a flame region image from the standard fire image, obtaining a video image P0 sent by each node of the block chain to obtain a negative sample image set Um, splicing the video image P0 and the flame region image to form a spliced image set U2, and combining the spliced image set U2 with a standard fire image U1 to obtain a positive sample image Un, constructing a convolutional neural network structure for fire identification, and constructing a training sample and a test sample by using the negative sample image set Um and the positive sample image set Un, and storing the convolutional neural network model to the block chain network. According to the method, the defects of information islands of traditional fire recognition are overcome through the block chain network, sharing of the training data and the convolutional neural network model is achieved, the convolutional neural network model has very high stability and robustness, and the accuracy of fire recognition is improved.

The invention relates to the technical field of big data analysis and data processing, and provides an intelligent power utilization load management method based on big data analysis, which constructs an accurate power utilization load prediction model by integrating historical power utilization data, climate data, a power grid equipment state and user behavior data. According to the method, the security and traceability of prediction data are improved by adopting a block chain technology, and automation of an electrical load management process is realized by means of an intelligent contract. The method comprises the specific steps of data acquisition and preprocessing, load prediction model construction and verification, prediction data storage and hash value generation, intelligent contract writing and execution, and process node data processing and evaluation. The method effectively solves the problems of load data abnormity and model errors, and improves the stability and management efficiency of a power grid system.

The invention provides a financing method based on a block chain, a financing system based on the block chain and a computer readable storage medium, and relates to the technical field of block chains. The method comprises the steps that a transaction platform node deploys an intelligent contract used for limiting transaction conditions in a block chain network; the receiver node uploads transaction data used for representing transaction details between the receiver node and the supplier node to the block chain network; the supplier node generates and uploads a financing application according to the transaction data and uploads the financing application to the block chain network; the investor node generates and broadcasts an audit result corresponding to the financing application; the consensus node performs legality verification on the auditing result, and calls an intelligent contract corresponding to the transaction data to respond to the auditing result after the verification succeeds, and consensuses nodes consensus response results of the audit results, packages response results of the financing application into blocks and writes the blocks into a block chain account book. According to the invention, each participant can efficiently and accurately complete the financing process under the restriction of the smart contract.

The invention relates to a multi-energy distributed transaction and intelligent contract design method based on an Ethereum private chain, and the method comprises the following steps: 1), setting aninitial node of an intelligent contract as an administrator node, and setting other nodes as user nodes; 2) distinguishing system functions and account authorities of administrator nodes and user nodes, wherein only the administrator nodes can add and delete tradable energy types in the block chain through an energy switch function; and 3) enabling the user to realize simultaneous transaction of multiple energy sources, and enabling the intelligent contract to perform matchmaking transaction on information published by the user according to market supply and demand conditions. According to theinvention, the problems of insufficient centralization and security assurance and the like of the current energy transaction system can be effectively solved, and meanwhile, an effective solution isprovided for the problem that the development of the current block chain technology in the field of multi-energy transaction is limited.

The invention discloses an agricultural product tracing method based on a block chain, and relates to the technical field of block chains. The method comprises the following steps: a user accesses a traceability system and submits a product anti-counterfeiting code; a web server in the traceability system positions a user node corresponding to the anti-counterfeiting code according to the anti-counterfeiting code; the user node positions a block storage node of the corresponding data chain according to the related hash value; a step of positioning to a database address according to the data block information; a step of returning the data information, the abstract, the information abstract stored in the data block and the abstract of the related data block; a step of analyzing the data information, and comparing whether the abstract stored in the database is the same as the abstract of the related information on the blockchain or not; a step of querying whether the related data block abstract is the same as the related information abstract on the anchoring chain or not; and a step of returning the final result to the query user. According to the method, the credibility and transparency of the traceability information can be improved, agricultural product traceability data sharing is realized, and the supervision cost is reduced.

The invention provides a block chain-based clock punching information sharing method and system, which relate to the technical field of block chains. The method comprises steps: a block chain networkis built among multiple clock punching equipment operators; and based on an information sharing protocol, the clock punching equipment operators share the clock punching information through the blockchain network. Through adopting the block chain technology, the clock punching information accuracy and the irreversibility can be improved, and the safe information authorized sharing mode between different organizations can be improved.

The invention provides a digital certificate offline secure distribution method and system for NB-IoT terminal equipment. The method comprises the following steps: logging in an IoT cloud platform through an IoT platform user client, executing a product creation operation on the IoT cloud platform, and obtaining a user identification code authorized by the IoT cloud platform; adding nB-IoT terminal equipment and an equipment identifier ID corresponding to the NBIoT terminal equipment to a created product by the IoT platform user client; enabling the IoT cloud platform to synchronize the user identification code and the equipment identifier ID to a security service platform, so that the security service platform generates a digital certificate file ciphertext of the NB-IoT terminal equipment according to the user identification code and the equipment identifier ID; a user client of an IoT platform operates on the IoT cloud platform, selects to download a digital certificate file ciphertext of related NBIoT terminal equipment, and transmits the downloaded digital certificate file ciphertext of the NB-IoT terminal equipment to a production line PC (Personal Computer) in an off-line manner, so that the digital certificate file ciphertext is decrypted on the production line PC. The decrypted digital certificate file is filled into the corresponding NB-IoT terminal equipment.

The invention relates to the technical field of data processing, and discloses a data management method and system based on a block chain and a meta universe, and the method comprises the steps: collecting initial data in a smart city through employing an intelligent device, carrying out the preprocessing of the initial data, determining a corresponding relation between data under the chain and a block record on the chain, and carrying out the collection of the data. Constructing a meta-universe virtual digital space of the smart city by using a three-dimensional modeling technology based on the second data in the block chain; constructing an intelligent prediction model through a GAN adversarial network, an LSTM network and an improved dung beetle optimization algorithm, and performing data prediction on the second data by using the intelligent prediction model to obtain a prediction result; and the user accesses the data of the smart city through the virtual reality device, and personalized recommendation is performed by the smart city. The data management level of the smart city can be improved, powerful support is provided for city planning and resource allocation, and the smart city can be promoted to develop towards a more intelligent direction.

The invention relates to the technical field of invoice data processing, and discloses an electronic invoice batch processing and storage method and system based on data encryption, and the method comprises the steps: obtaining original electronic invoice data; performing calculation on the original electronic invoice data through a data encryption algorithm to obtain encrypted electronic invoice data; inputting the encrypted electronic invoice data into a clustering model to obtain a clustering result, wherein the clustering result comprises a class cluster center, a class cluster type and a class cluster density; according to the class cluster center, a class cluster distance between each class cluster is calculated through a distance formula; and adopting different storage schemes for the original electronic invoice data and the encrypted electronic invoice data according to the class cluster distance and a preset distance threshold. The method has the following effects that the data security is enhanced through the data encryption algorithm, the data distribution is automatically analyzed in combination with the clustering technology, the electronic invoice data is classified and stored based on the clustering result, the data storage space is reduced, and the data query efficiency is improved.

The invention discloses an Internet of Things communication method. The method comprises a data uploading stage and a data consulting stage. The invention discloses an Internet of Things communicationdevice. The Internet of Things communication device includes a detection device and is characterized in that the output end of the detection device is electrically connected with the input end of a wireless information sending module through a wire, and the output end of the wireless signal sending module is connected with the input end of the Internet in a wireless mode, the Internet is in bidirectional connection with the intelligent contract in a wireless mode, and the intelligent contract is in bidirectional connection with the access terminal in a wireless mode. According to the Internetof Things communication method and device, a visitor can access the information in the Internet through any intelligent terminal, the visitor can consult the information anytime and anywhere, the useis more convenient, the visitor has no right to carry out any change, transfer and other operations on each piece of information, the system can also automatically record access records, and the security and tamper resistance of the information are improved.

The invention discloses a decentralized access control method and system based on transaction. The system is composed of nodes responsible for different functions on a decentralized network. An authorization service module for constructing the nodes comprises a strategy judgment unit, a strategy management unit, a script interpreter and a strategy information unit. The transaction is used as a propagation medium and an evidence for access control in the decentralized network system, the transaction types comprise a subject registration transaction, an object hosting transaction, a strategy release transaction and an access authorization transaction, the transaction types are used for recording related entity attributes and operations executed by nodes, and the integrity and authenticity ofthe transaction are guaranteed by adopting a scripted password authentication technology. The access control system based on transaction circulation provided by the invention covers a resource hosting process, a main body registration process, a strategy release process and an access authorization process in access control, and can realize authorization management based on a dynamic access strategy without a trusted party.

The invention relates to a webpage tampering detection method based on a block chain technology, and the method comprises the steps: S1, initializing distributed storage nodes, synchronizing block chain data between different storage nodes, and verifying the data integrity and legality of a newly added node; s2, carrying out data acquisition on a webpage to be detected, and representing the content of the webpage to be detected as a computable data structure; s3, performing hash operation on the data structure to generate a unique digital fingerprint; s4, constructing a transaction by using the digital fingerprint, and performing propagation and verification; s5, constructing a new block, and performing broadcasting and verification; and S6, regularly verifying the record on the block chain according to requirements to determine whether the webpage is tampered or not. The invention further provides a webpage tampering detection device based on the block chain technology and a storage medium.

The invention discloses an agricultural product traceability management system based on a block chain technology. The agricultural product traceability management system comprises a management node, an agricultural product benefit related party node and a block chain management and block chain traceability subsystem. The management node is a platform root node, and the agricultural product benefitrelated party node is a collaborator and is responsible for uploading related process tracing data; the management node is in point-to-point connection with each agricultural product benefit relatedparty node through a P2P network. The block chain management subsystem is deployed on a management node server and is used for key management, node addition, data uploading and data retrieval; the block chain traceability subsystem is used for uploading data, generating a two-dimensional code and retrieving the data; the secret key management adopts an asymmetric secret key management system and is used for generating a pair of secret key public key and private key for the newly added node, and the public key is used for encrypting data and verifying signatures; and the private key is used fordecrypting the data and the personal signature. According to the agricultural product traceability management system, data cannot be tampered, the system is complete and real, and the trust problem of agricultural product traceability can be solved.

The embodiment of the invention discloses a data processing method and device based on a block chain. The method comprises the steps that an information verification request sent by a first user is received, and if it is determined that the information verification request is a legal request, the information verification request is sent to consensus nodes in a block chain system, so that the consensus nodes determine a first verification result of an asset association event according to the information verification request. Receiving a first verification result sent by each consensus node, determining a consensus result of the asset association event according to each received first verification result, and when it is determined that the asset association event reaches a consensus, addingan asset association event storage block comprising a first user identity identifier corresponding to the first user and the asset association event to the block chain, and sending information verification confirmation pass information to the first user. By adopting the embodiment of the invention, the authenticity and the tamper resistance of the user information can be improved.

The invention discloses a high-low voltage power distribution system data management method based on a block chain, and the method comprises the steps: collecting the operation data of a power distribution system, carrying out the proofreading of the operation data of the power distribution system, and obtaining the calibration power distribution data; creating a block chain network based on the cloud server, splitting and encrypting the calibration power distribution data, and storing the calibration power distribution data in the block chain network; and constructing a user access mechanism, and after a user access request is received, determining a user access permission based on the user access mechanism and controlling user operation. According to the invention, high security, integrity and transparency of data of the high and low voltage power distribution system are realized through the block chain technology, resource allocation is optimized, and supervision compliance is enhanced. Data management efficiency is improved through equipment authentication and data classification, and system stability is enhanced through abnormal data processing. The hybrid chain architecture balances privacy protection and data sharing, and user access control ensures operation compliance. The application of the smart contract realizes automatic supervision and quick response to default behaviors.

The invention provides a self-adaptive block chain water basin monitoring method and system based on an intelligent analysis algorithm, and the method comprises the steps: obtaining newly-added sensor monitoring data of a source domain and a target domain of a water basin monitoring station, extracting a monitoring data sequence through a sliding time window and data fusion method, and generating a newly-added sample set; taking the newly added sample set as a training sample set; constructing a self-adaptive water basin analysis network model fusing GCN and LSTM, training based on the training sample set, and calculating the overall loss of the model; if the overall loss is greater than a threshold value, extracting a part of samples from the training sample set according to a data importance sampling algorithm, storing the samples into an experience learning library, and combining the samples with a next round of newly added samples to form a new round of training sample set for continuous training; otherwise, finishing training to obtain a water basin monitoring model; and monitoring the water basin condition of the target domain based on the model to obtain a monitoring result. According to the invention, accuracy and real-time performance of water quality parameter, water level change and water flow speed monitoring can be improved, and data safety is improved.

Disclosed are methods and systems for publishing transactions for adding and removing roles and certificates to and from a distributed ledger and for authenticating certificates of two connected servers. The roles specify what server with the roles can publish what types of transactions for certificates and roles. When a role is requested, two transactions for adding the role and an issuer certificate are published to the distributed ledge. When a certificate of a server without any role is requested, only a transaction for adding the certificate is published to the distributed ledger. All the transactions are published through operation among a certificate-requesting server, a certificate-issuing server, and a distributed ledger network maintaining the distributed ledger. Two connected servers can verify authenticity of their counterpart's identities with the certificate retrieved from the distributed ledger and having the benefits of certificate immutability and availability of the distributed ledger technology.

The invention provides an encryption and decryption method based on an RSA algorithm, and the method comprises the steps: 1, enabling an authorization party to generate a public key and a private key, enabling the authorization party to store the private key, and enabling the public key to be placed in a business system; 2, the authorization party encrypts the authorization information through a private key; 3, generating an authorization file from the encrypted ciphertext; 4, uploading the authorization file to a service system; 5, verifying and decrypting the authorization file through a public key in the service system; step 6, obtaining authorization information in the authorization file; and step 7, performing service logic control according to the authorization information. According to the invention, an asymmetric encryption mode is adopted, the security and non-tampering property of the authorization file are improved, the risk of secret leakage is reduced through a public and private key mode, and the requirements of security and uniqueness of the authorization file are met.

The invention provides an electronic insurance policy information security management and control method. The method comprises the steps of obtaining a first electronic insurance policy; generating animplicit hidden pile corresponding to the first electronic insurance policy according to the first electronic insurance policy; embedding the implicit hidden pile into the first electronic insurancepolicy to generate a second electronic insurance policy; and performing base64 coding on the second electronic insurance policy to form a first binary coded file corresponding to the second electronicinsurance policy, and sending the first binary file to an electronic insurance policy receiver. According to the electronic insurance policy information security management and control method provided by the invention, the tamper resistance of the electronic insurance policy is improved, when the electronic insurance policy leaks, the source can be traced rapidly through the binary coded file, and the supervision risk caused by the leakage of the electronic insurance policy information is reduced.

The invention relates to the technical field of instant messaging, in particular to a doctor-patient platform instant messaging method and system, and the method comprises the steps: starting a doctor-patient instant messaging application, carrying out the identity verification, obtaining a verification parameter, judging whether the identity verification succeeds or not according to the verification parameter, and if the identity verification succeeds, defining an identification content field and a message content field, and pulling historical data; the method comprises the following steps of: constructing a display format set, updating data, obtaining updated data, sending real-time data, encrypting the data, generating a signature, obtaining encrypted data, verifying a signature packet, sending the data, calculating transmission delay, judging whether the transmission delay is in a delay range or not, and if the transmission delay is not in the delay range, sending the signature packet. If the transmission delay is within the delay range, self-adaptive adjustment is carried out, verification is carried out according to the verification signature packet to obtain verification data, and if the transmission delay is within the delay range, verification is carried out according to the verification signature packet to obtain verification data to complete communication. According to the invention, the security and privacy of doctor-patient communication can be improved.

The present invention provides a method and system for offline secure distribution of digital certificates of NB-IoT terminal equipment. The method includes: logging in to the IoT cloud platform through the IoT platform user client, performing the operation of creating a product on the IoT cloud platform, and obtaining a user identification code authorized by the IoT cloud platform; adding NB‑ to the created product through the IoT platform user client The IoT terminal device and its corresponding device ID; the IoT cloud platform will synchronize the user ID and device ID to the security service platform, so that the security service platform can generate a digital certificate for the NB‑IoT terminal device based on the user ID and device ID File ciphertext; operate on the IoT cloud platform through the IoT platform user client, choose to download the ciphertext of the digital certificate file of the relevant NB‑IoT terminal device, and transmit the ciphertext of the downloaded digital certificate file of the NB‑IoT terminal device offline To the production line PC, for decrypting the ciphertext of the digital certificate file on the production line PC, and filling the decrypted digital certificate file into the corresponding NB-IoT terminal device.