35results about How to "Realize immutability" patented technology

The invention discloses a transaction quick confirmation method and device based on a block chain technology, wherein, the method comprises the following steps: step S1, confirming the node identity and electing a consensus committee and a committee leader; S2, submitting the transaction to the committee, so that the committee leader initiates a round of BLS aggregation signatures for the transaction, and broadcasting the total signatures for the transaction on the whole network to quickly confirm the transaction; Step S3, packaging and summarizing the confirmed transactions by the committee leader, forming a current round block by the transaction package, the transaction proof, the previous block hash and the current unspent transaction pool, sending the current round block and the blockhash value to the members of the committee, and operating the consensus within the committee to generate a new block. The method can realize the fast confirmation of the transaction, and effectively improves the practicability and reliability of the transaction, which is simple and easy to realize.

The present invention relates to an electronic health record management system and method, which solves the technical problem of low confidentiality. The method is characterized in that: by taking a blockchain as a storage underlying layer of a health record system, de-intermediated trust of all nodes is achieved; all data cannot be tampered with, and traceability and consistency of all the data are achieved; and open transparency of non-sensitive data and confidentiality of sensitive and private data are achieved. The technical scheme of the present invention has the following beneficial effects that: the originality and authenticity of health data and operational data are ensured, and the health data and the operational data cannot be tampered with; the storage security of the health data and of the operational data of the health data is ensured; it is ensured that personal privacy and sensitive information cannot be leaked; and the technical scheme for fast sharing of health data and operational data better solve the problem and can be used in medical electronic applications.

The invention discloses an online cross-border transfer payment method for users between commercial banks based on a block chain. A traditional cross-border transfer payment technology system betweencommercial banks and an emerging virtual digital encryption currency cross-border transfer payment technology system based on a block chain technology are fused. Certain national legal currencies areused as intermediary currencies. Medium currency is used as a carrier for value conversion between different countries of currency. Value conversion between different countries of currency is realizedby using the smart contract. Compared with the prior art, the method has the advantages that the virtual digital currency is replaced, point-to-point transmission of cross-border payment between commercial banks is realized by the aid of an alliance chain in a block chain technical system on the basis of existing financial supervision of cross-border payment of the commercial banks, and the technical scheme has the technical characteristics of controllability, anonymity and traceability so as to meet financial supervision requirements between the international and the regions.

Disclosed is an electronic contract platform realizing method based on SDK message and digital signature. In the absence of a digital certificate, a third party platform sends a concluding verification code through an SDK messaging gateway to authenticate the identity of an electronic contract concluding party and confirm the concluding behavior. The third party platform performs data packet stitching on data of the concluding party, adds the electronic signature of the third party and performs package, thus realizing electronic signature on electronic contract data under the condition that the concluding party has no digital certificate. An identity authentication method is provided for the electronic contract concluding party having no digital certificate through SDK messaging, and safe and effective evidence curing is carried out on packaged identity authentication information, timestamp and electronic contract data through a third party platform digital certificate signature way. Complicated process and safety concern of the current electronic contracting are solved. The electronic contract platform realizing method has rapid, convenient and effective practical operation values.

The present invention provides a method and system for supporting multi-mode identification network addressing to gradually go to IP, and a storage medium. The present invention proposes a set of newnetwork multi-mode identification generation management and routing addressing system that integrates blockchains. The multi-mode identification dynamic adaptation and intercommunication technology isused to break through all existing network performance and security bottlenecks based on the IP layer, and the distributed blockchain consensus algorithm is used to achieve the original wish of Internet co-management and co-governance. All network resources on the network are locked on the blockchain to ensure that network resources are authentic and not tampered; the high-performance and low-overhead distributed storage technology is used to achieve the security of multi-mode identification addressing and tamper-proof modification, and, at the same time, the introduction of user real-name registration and network login management strategies combined with biometric identity information and signature strategies for privacy protection are introduced to reduce system management costs and improve the privacy and security of access node information.

The invention discloses an electric vehicle charging distributed system based on a block chain. The system comprises an electric vehicle, a P2P charging pile network based on a block chain architecture, and a power grid. The electric vehicle serves as a storage system and stores redundant electric quantity of the power grid. The charging pile network can realize real-time sharing of power demand information and real-time prices among power systems. Each charging pile in the network is used as an independent node, and the nodes obtain the demand information and the real-time discharging rewardprice from the power grid, schedule the corresponding electric vehicles to execute charging and discharging behaviors, generate corresponding transaction records according to the charging and discharging behaviors of the electric vehicles and write the transaction records into the block chain; and the power grid is a demand publisher in the system, sends the real-time demand information and the real-time discharge reward price to the charging pile network according to the state of the power grid, and adjusts the operation of the system of the power grid. According to the invention, the power system is developed towards a clean and efficient direction, and a good power ecological network is established.

The invention relates to a data processing method, apparatus and device based on a block chain, and a storage medium. The method comprises the steps of receiving event data generated by a user terminal for a service event; generating a first event block of the event data; acquiring a second event block associated with the first event block, wherein the second event block has a block encryption value; generating a block encryption value of the first event block by using the block encryption value of the second event block; and encrypting the first event block by using the block encryption valueof the first event block. Through adoption of the method, the event data recording the service event is not tampered due to use of the block chain technology, so that the event data recording the service event has non-repudiation and legal validity.

The embodiment of the specification provides a data processing method and device based on a block chain. The block chain comprises service platform node equipment; the data processing method based onthe block chain comprises the following steps : acquiring to-be-audited service data generated by performing service processing on a target user by at least one service processing party through service platform node equipment; performing entity extraction based on the to-be-audited service data, generating shared to-be-audited service data according to the association relationship among the entities in the extraction result; sending a first transaction to the blockchain, the first transaction comprising a first digital abstract of the shared to-be-audited service data to enable the first transaction to be stored in a distributed database of the blockchain after passing the consensus verification of the blockchain. Therefore, the to-be-audited service data are uploaded to the blockchain, and the credibility of the to-be-audited service data is guaranteed in the process of compliance auditing of a service processing party or a service platform according to the to-be-audited service data.

The invention provides a block chain-based product traceability method. The method comprises the steps: obtaining a first ticket circulation record identification when a first ticket holder calls a ticket circulation interface, and judging whether the calling of the ticket circulation interface by the first ticket holder is a legal operation or not through an intelligent contract; if yes, judgingwhether ticket circulation is normal or not through a smart contract according to the first ticket circulation record identifier; if the ticket circulation is normal, broadcasting a first ticket circulation record to the block network, storing a second ticket holder to which the ticket flows by using the smart contract, and storing the first ticket circulation record into the block chain; receiving a ticket query command; if it is judged that the ticket corresponding to the ticket query command exists by using the smart contract, feeding back all ticket data of the ticket to an initiator of the ticket query command. The invention further provides a block chain-based product traceability device, electronic equipment and a computer readable storage medium, which all have the above beneficialeffects and are not repeated herein.

The invention discloses key generation equipment, a key management system, data processing equipment and a data transaction system. The key generation equipment comprises an encryption engine which isconfigured to generate a public and private key pair of a first user, store the public and private key pair to a memory, reads a private key of the first user and a public key of a second user in thememory, generates a re-encryption key, and sends the re-encryption key to a processor; the memory which is configured to store the public and private key pair of the first user generated by the encryption engine; the processor which is configured to receive the public key of the second user sent by a communication interface, sends the public key to the encryption engine, receives the re-encryption key generated by the encryption engine and sends the re-encryption key to the communication interface; and the communication interface which is configured to receive the public key of the second user, sends the public key to the processor and sends out the re-encryption key transmitted by the processor. Through adoption of the scheme, the data security can be improved.

The invention provides a privacy protection method and system for an enterprise DID identity system. The privacy protection method comprises the steps that M1, an enterprise applies for an enterprise DID and an enterprise account key from an auditing institution by providing an enterprise real identity information material; M2, the auditing institution audits the enterprise real identity information and grants the enterprise DID and the enterprise account secret key, and corresponding relation data of the enterprise real identity and the DID is precipitated in the auditing institution; M3, after the auditing agency passes auditing, an instruction is sent to the service system, and the service system establishes DIDDoc corresponding to the DID based on the enterprise digital identity and stores the DIDDoc on the blockchain; M4, multiple types of secret keys of the DID are created according to service requirements, and the multiple types of secret keys of the current DID are recorded in DIDDoc; and M5, the enterprise provides own DID information for the query party, and the query party is authorized to query the mapping relationship between the DID and the real identity of the enterprise at the auditing institution based on the record of multiple types of keys in DIDDoc.

The invention discloses a flight recording system of an airplane, which can standardize maintenance file data, realize real-time, datamation and intelligent transmission of aircraft maintenance and fault information, improve operation efficiency, realize real-time monitoring and continuous inspection of flight records, and realize accuracy, continuity and traceability of the flight records. According to the technical scheme, the system comprises: a template and knowledge base module which is used for maintaining data needing to be referenced when the electronic record paper is filled, facilitating operation at a mobile terminal and standardizing maintenance archive data at the same time; the function role filling module that is used for breaking through data channels among the operation field, the maintenance field and the service field, and real-time, datamation and intelligent transmission of aircraft maintenance and fault information is achieved; the electronic recording paper archiving module that is used for generating a PDF (Portable Document Format) according to the electronic recording paper information submitted by the mobile terminal and archiving the PDF; and the monitoring and checking module that is used for carrying out real-time monitoring and continuous checking on the recording paper information and ensuring the integrity of the recording paper information corresponding to each flight.

The invention is the electronic document and windows online signed method based on XML vector graphics technology, and it is a document format that conforming XML (eXtensible Markup Language) international standards, and takes on the electronic document or electronic window with the main body of digital contents, and adds the programs written in scripting languages or other programming languages by the means of include or link, to achieve the electronic document and windows online signed relevant jobs.

The embodiment of the invention discloses a donation information processing method and device, equipment and a storage medium. The donation information processing method comprises the following steps:collecting warehouse-in information of donation materials, wherein the warehousing information at least comprises donator identity information and donation mode evidence storage information; determining ex-warehouse information of the donation materials, wherein the ex-warehouse information at least comprises donation recipient identity information and donation mode evidence storage information;and establishing an association relationship between the warehouse-in information and the warehouse-out information of the donation materials, and writing the association relationship into a block chain for traceability query of the donation materials. According to the embodiment of the invention, the donation materials are traced and inquired according to the association relationship, and the donation material flow direction specific information is transparent; and the association relationship is written into the blockchain, so that tamper resistance of donation information can be realized, the people can supervise the real flow direction of donation materials, and public transparency of a charity donation platform is realized.

The invention discloses an intelligent power grid lightweight privacy protection data aggregation method based on a block chain. The method comprises the steps of: generating and distributing parameter information of other entities in a system by a trusted third-party mechanism; selecting candidate nodes according to the attributes of the edge servers, screening the rotation sequence of the main nodes, and distributing parameters; enabling the intelligent electric meter to collect user power consumption data and transmit the user power consumption data to the edge server in charge of the area;enabling the edge server to perform local data aggregation and upload a result to the main node; enabling the main node to process the data and then add the data into a block chain; and enabling thecontrol center to perform data analysis on the information in the block chain and perform real-time regulation and control on the system. The edge server can reduce the communication overhead and thecalculation cost by aggregating the data for multiple times, and error data is filtered in advance; data sources are traceable, so that tamper resistance and decentralized management of the data are realized, and the method has higher attack resistance; and pairing operation and redundant calculation processes are reduced while efficient verification is guaranteed, and resource consumption is reduced.

The embodiment of the invention discloses an electronic communication method and an electronic communication system, and the electronic communication method comprises a communication system preparation step, a session key transmission step, a session information signature step, a session information transmission step, a session information verification step and a session information storage step.The electronic communication method disclosed by the embodiment of the invention can realize electronic instant messaging, and has the characteristics of high security level, anonymity, tamper resistance, denial resistance and the like.

The invention discloses a resume sharing method and system applying a block chain technology, and the system provides an intelligent contract and a resume information pointer, obtains the resume information pointer according to the intelligent contract, and queries and obtains the resume information data, stored in a local database of an employment company, of an applicant according to the resumeinformation pointer, wherein the intelligent contract comprises a management contract, an abstract contract and an employment relationship contract, wherein the management contract is configured to define a unique Ethereum identity recognition address for each applicant and employment company, wherein the abstract contract is configured to integrate all data related to an applicant or an employment company by taking the applicant or the employment company as an index; the employment relationship contract is configured to define the resume information pointers and associated access rights for identifying resume records held by employment companies, where each of the resume information pointers consists of a query string that, when executed on a local database of the employment companies, returns a subset of applicant data.

The invention discloses an education award teaching and learning assisting system, and relates to a blockchain, and the overall architecture of the system comprises an application layer, a consensus layer, a network layer, a data layer and an information checking terminal. The information checking terminal is respectively connected with the application layer, the consensus layer, the network layerand the data layer; the application layer comprises an intelligent contract module and a privacy protection module; the consensus layer comprises a consensus mechanism module; the network layer comprises a network protocol module and a transaction verification module; the data layer comprises a security algorithm module; the education award teaching and learning assisting system adopts a blockchain technology as a data transmission and distributed storage core service layer. According to the education award teaching and learning assisting system based on the blockchain, accurate docking, accurate management and accurate assistance can be realized. Through big data analysis, an assistant student tracking file is established, and the block chain records the real life condition of the student.

The invention belongs to the technical field of block chains, and discloses a power grid node credibility information determination and evaluation method, system, device and terminal, and the method comprises the steps: adding a new node into a power grid block chain, and endowing the new node with initial credibility; when the credibility of the user node reaches a threshold value, the user node is allowed to carry out electric quantity transaction; in a power grid, user nodes determine electric quantity buying and selling according to requirements; in the power grid block chain, two parties who buy and sell electric quantity are matched, and the two parties carry out transaction; the completed electric quantity transaction is written into the block, malicious transactions in the block are removed, a consensus node reaches a consensus, and the block is added to the block chain; and updating the credibility of the user node. According to the power grid node credibility information determination and evaluation method based on the block chain, electric quantity transaction can be carried out more conveniently, each piece of transaction information can be stored in the block chain, the information cannot be tampered, and normal operation of a maintenance system is facilitated.

The invention relates to a system for shared equipment based on a block chain. The system for the shared equipment based on the block chain comprises the shared equipment, a user service client, an identifying module, a backstage credit information system and a paying account. The system for the shared equipment based on the block chain realizes that the using record of the shared equipment cannotbe tampered by using a block chain technology, and is connected with the user credit information system, so that the simultaneity of using the shared equipment and paying is separated, a concept of consuming in advance for modern people can be required preferably, meanwhile, the shared equipment is enabled to unlock by default innovatively, the unlocking procedure is omitted, the shared equipmentis more convenient and efficient, the using efficiency is improved, and using experience of the shared equipment is optimized.