38results about How to "With traceability" patented technology

The invention discloses a file security control and trace method and system based on digital fingerprints. The method includes the file uploading procedure and the file downloading procedure. In the file uploading procedure, when a user uploads files to a file server, the file server starts a natural language analysis program and conducts full-context scanning and matched analysis on file contexts, a position where the digital fingerprints can be inserted is found, a fingerprint feature position list is generated, the fingerprint feature position list and original files are stored in the file server together, the uploading and downloading record list is generated, and information uploaded this time is recorded. In the file downloading procedure, when the user sends a file downloading request to the file server, the file server generates binary random codes with the same length according to the length of the fingerprint feature position list, when the random code corresponding position is 1, the digital fingerprints are inserted in the contexts at the corresponding position, a new file is generated and sent to the user, and meanwhile the downloaded information is recorded in the uploading and downloading record list. By means of the method and system, the context files can be traced back, and the security of the context files is managed.

The invention provides an intranet and extranet system data transmission encryption method and device, equipment and a medium. The method comprises the following steps: generating a first public key,a first private key, a second public key and a second private key through a data encryption and decryption verification center deployed on a gateway server; issuing the first private key and the second public key to a client, and issuing the first public key and the second private key to a server; receiving request information generated by the client based on the first private key via the data encryption and decryption verification center, decrypting request data by using a first public key based on the request information, and directly sending the request data to the server; receiving response information generated by the server based on the second private key via the data encryption and decryption verification center, decrypting response data by using the second public key based on the response information, and directly sending the response data to the client. The method has the advantages that a data exchange function can be realized in an isolated state, a multi-level security mechanism is provided, and cross-network data transmission security can be ensured.

The invention discloses a data asset value evaluation method based on a block chain, and relates to the technical field of block chain application, the block chain comprises a data chain and a value chain, and the asset value evaluation method comprises the following steps: obtaining a data set of data assets, and uploading the data set to the data chain for recording and saving; participating inbidding on the value chain according to the data set by user nodes; calculating bids of the user nodes participating in bidding on the value chain according to an intelligent contract of a preset ruleto obtain a bidding result; and obtaining an evaluation result of the data asset value according to the bidding result, and ensuring that the recording, pricing and transaction processes of the dataassets are all realized on the chain by a'data chain + value chain 'double-chain mechanism, so that the evaluation method has traceability, and the reliability of the evaluation of the data asset value is enhanced.

The invention discloses a federal learning data tamper-proof monitoring method and a related device, and the method comprises the steps: transmitting training configuration data to target equipment obtained after screening through a server, enabling the target equipment to carry out local training according to the training configuration data, and obtaining a training result; calculating a first hash value of the training result through the target device by adopting a preset hash algorithm, sending the first hash value to the block chain, sending the training result to the server, and enabling the block chain to establish connection with the server and the target device through a preset smart contract; and performing result verification through the server according to the received training result and the first hash value obtained from the block chain, and judging that the training result received by the server is not tampered if the verification is passed. The technical problem that the updating effect of a global model is affected due to the fact that a server cannot judge the credibility of data due to the fact that existing federal learning is lack of a transmission data tampering monitoring mechanism is solved.

The invention provides a verification system for vaccination. The verification system comprises a vaccination verification system which comprises a vaccination verification device, a vaccination datadisplay device, a vaccination data display same-screen device, an authority verification device, a vaccine identification device, a vaccination process data acquisition device, an alarm device, a printing device and a database. The vaccination verification system provided by the invention has an informatization, electronization and networking method to realize informatization management in a vaccination verification link; the phenomena of wrong vaccine and invalid vaccine in the vaccination verification process caused by human factors are avoided; the system has the advantages that medical disputes caused by wrong vaccines and invalid vaccines are reduced, the efficiency of the verification process can be greatly improved, the time cost is saved, the electronic tracing ability of the verification link is achieved, the last checkpoint is achieved, and a closed loop is formed in the vaccination informatization traceable process.

A rolling bearing engineering drawing method based on VB belongs to the drawing method field. At present, it takes a long time to draw the bearing electronic drawing by AutoCAD, and the drawing process needs to consult the relevant specifications and other data, and the problem of high error rate. The invention relates to a rolling bearing engineering drawing method based on VB. Design process ofinquiring bearing precision function; Design Process of Two-Dimensional Structure Drawing Function of Bearing Parts; Dimensioning function design process; The design process of scaling function; Interface design process; The design process of data import and export function; The design process of data real-time updating. The invention uses Visual Basic and AutoCAD to realize bearing precision design, roughness design, bearing whole set drawing, drawing scale arbitrary zoom and so on, and shortens product design cycle.

The invention discloses a decentralized Internet of Things data transaction system, which is implemented based on a block chain network. The Internet of Things data provider publishes the information of tradable data to the block chain network through a smart contract, and realizes the transaction based on a smart contract. Automatic point-to-point data transactions, the data supplier obtains the digital certificate and delivers the data, and the system records the execution result in the blockchain ledger. Among them, the data supplier only acts as a data provider, and the data demander only acts as a data demander, and neither acts as an accounting node on the blockchain network. The decentralized Internet of Things data transaction system proposed by the present invention is a high-efficiency, high-quality, and short-cycle Internet of Things data transaction method based on blockchain technology, which can realize the security of Internet of Things data generated by users (terminal devices) , Paid, and quickly used by the demand side, to achieve the purpose of ensuring the fairness of the data supply and demand sides and the legal and compliant use of IoT data through technical means.

One or more embodiments of the invention disclose a portrait verification method and device, which are used for realizing open type portrait storage and management so as to improve the efficiency andaccuracy of portrait verification. The method comprises the following steps: in response to a portrait verification instruction for carrying out portrait verification on a user, obtaining a first portrait comparison record which corresponds to user information and meets a preset condition from a portrait management system according to the user information of the user contained in the portrait verification instruction; Determining a first reference portrait corresponding to the user according to the first portrait comparison record; Comparing the first reference portrait with a currently collected portrait to be verified of the user to obtain a comparison result; And determining whether the to-be-verified portrait passes verification according to the comparison result, Wherein the portraitmanagement system stores portrait comparison records of a plurality of users.

The invention relates to a supply chain storage sorting method and system based on a virtual data chain. The supply chain storage sorting method comprises the following steps: commodity warehousing: establishing a unique virtual label according to commodity information of different commodities, and taking commodity information data as basic data of the virtual label; warehouse allocation: allocating a temporary warehouse space uniquely corresponding to the virtual tag from the idle warehouse space, and taking identification information and allocation time of the temporary warehouse space as first additional data of the virtual tag; commodity sorting: associating commodities in the temporary storage space according to the commodities required by the order information, taking out, sorting and packaging the corresponding commodities, and taking the associated order information as second additional data of the virtual tags; and commodity delivery: pasting a waybill on the packaged commodity, wherein waybill information is used as third additional data of the virtual label. And the virtual label is used as the unique identity label of the commodity in the warehousing sorting system, sothat the labor intensity of information acquisition work is reduced, the warehousing sorting cost is reduced, and the working efficiency is improved.

The invention discloses a medium and long term power transaction method and system based on a smart contract, and belongs to the field of distributed power transaction, and the method comprises the steps: S1, a power grid enterprise sets a power transmission and distribution price, and uploads the power transmission and distribution price to a block chain; S2, after the electricity seller and the electricity purchaser reach a transaction intention, an intelligent contract is called to obtain the power transmission and distribution price from the block chain to draw up a medium and long term transaction contract and the transaction contract is stored to the block chain through the smart contract; S3, the power grid enterprise calls an intelligent contract to obtain a transaction contract from the block chain and performs security check and when the security check result is that the transaction is approved, contract signing succeeds; S4, the power grid enterprise uploads the measured transaction electric quantity of the seller and the buyer to the block chain through the smart contract for electric quantity settlement; and S5, the electricity purchaser sends the settled transaction fee to the smart contract account so that the smart contract account can distribute the transaction fee, and contract execution is completed. According to the invention, the problems of low cross-department data processing efficiency and difficulty in transaction information tracing and supervision in medium and long-term power transactions can be solved.

The invention belongs to the technical field of block chain technology and production logistics, and provides a production logistics management system and method based on a block chain. The system is managed by a distributed storage node, a transportation node and an MEC node and is interconnected through the Internet of Things, decentralized logistics services are provided among the nodes based on the block chain technology, and interaction and benefit safety delivery are completed by using an intelligent contract; when the storage node issues a transportation service request, the transportation node signed with the smart contract games with the storage node according to the respective situation, and determines the final transportation service providing node to provide the transportation service; and when the transportation node issues a calculation service request, the MEC node close to the transportation node provides a calculation task and obtains corresponding earnings. Compared with a traditional production logistics management system, the system has the advantages of distributed storage, high safety and reliability, easy traceability and the like.

The invention relates to the casting field, particularly to a positioning method for manufacturing of a cartridge receiver support plate. Three positioning bosses A1, A2, and A3 are arranged at one side of a blade body of a cartridge receiver support plate, wherein the three positioning bosses A1, A2, and A3 are distributed in a three-point positioning mode; a positioning boss is arranged at a positioning point B1 located at the upper side of the mounting edge of one side of the blade body, a positioning boss is arranged at a positioning point B2 located at the lower side of the mounting edge of one side of the blade body, and a positioning boss is arranged at a positioning point C1 located at the back of a flange of the cartridge receiver support plate. Blade positioning is realized by using the three positioning bosses A1, A2, and A3 as the main primary references; the axial height dimension is localized by using the positioning bosses B1 and B2 as auxiliary positioning points; and the circumferential dimension is localized by using the positioning boss C1 as the auxiliary reference positioning point. According to the invention, six positioning bosses are manufactured at the parts like the support plate blade body and the mounting edge and the like and are used as the unique reference system for dimension measurement, mechanical processing, and cartridge receiver welding; reference unification of all procedures can be realized; the support plate dimension can be measured rapidly and accurately; and processing, welding, positioning, and installation can be realized conveniently.

The present invention relates to a preparation method of self-traceable grating standard substance that accurately shortens the pitch value. The method is based on laser convergence atomic deposition technology and soft X-ray interference lithography technology, and prepares small-pitch traceable standard substance with a scale of 100 nanometers or less, including The following steps: 1) Obtain a mask plate substrate; 2) Use laser convergent atom deposition technology to deposit and prepare a mask plate on the mask plate substrate; 3) Obtain a photoresist sample, the photoresist sample includes photoresist and the second substrate; using a mask plate, through soft X-ray interference lithography technology, the photoresist is exposed and developed to obtain a photoresist grating structure; 4) transferring the photoresist grating structure to the second substrate On, obtain the self-traceable grating standard substance. Compared with the prior art, the self-traceable grating standard substance prepared by the invention has the advantages of high precision, traceability, accurate shortening of pitch value and the like.

The invention discloses a communication method between router nodes, comprising: customizing the selection of the first transaction data in the standard OSPF work flow, so that it becomes the second transaction data matched with the block chain communication; The standard OSPF workflow performs secondary configuration of each node, so that the second transaction data between the nodes cooperates with each other and realizes synchronization; based on the blockchain communication workflow, the corresponding block is generated for the second transaction data, and each node After verification, it is added to the blockchain. The invention provides a communication method between router nodes, which innovates and improves the timing of sending or receiving transaction data and integrates standard OSPF and blockchain processes, which only modifies the standard blockchain process without modifying the OSPF standard process , to ensure compatibility with existing protocols and interoperability with existing networks.

The invention discloses a file security control and trace method and system based on digital fingerprints. The method includes the file uploading procedure and the file downloading procedure. In the file uploading procedure, when a user uploads files to a file server, the file server starts a natural language analysis program and conducts full-context scanning and matched analysis on file contexts, a position where the digital fingerprints can be inserted is found, a fingerprint feature position list is generated, the fingerprint feature position list and original files are stored in the file server together, the uploading and downloading record list is generated, and information uploaded this time is recorded. In the file downloading procedure, when the user sends a file downloading request to the file server, the file server generates binary random codes with the same length according to the length of the fingerprint feature position list, when the random code corresponding position is 1, the digital fingerprints are inserted in the contexts at the corresponding position, a new file is generated and sent to the user, and meanwhile the downloaded information is recorded in the uploading and downloading record list. By means of the method and system, the context files can be traced back, and the security of the context files is managed.

The embodiment of the present invention discloses a data registration and trusted circulation system, including: a data provider, a data demander, a data registration and trusted circulation platform, a data standardization tool, a registration application tool, a trusted computing tool, and a trusted computing Platform; the data provider uses the data standardization tool to standardize the fields in the database to be registered and released to obtain a standardized database, uses the registration application tool to calculate the registration feature code of the standardized database, generates a feature code, and then generates a registration application ; The data registration and trusted circulation platform publishes the summary information of the standardized database for trusted transaction circulation. On the premise of not breaking away from the control of the data provider, the data transaction and circulation are completed through the trusted computing tool and the trusted computing platform, which enhances the control over the data in the process of trusted circulation, and ensures that authorization is required before use, the use process is controllable, Traceable after use.