33results about How to "Improve immutability" patented technology

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.

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 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 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 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 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 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 embodiment of the invention discloses an electronic document verification method and device and electronic equipment. The method comprises the following steps: acquiring a to-be-verified document; wherein the to-be-verified document comprises content data and at least one signature domain; the signature domain comprises an annotation picture, and the annotation picture is associated with a signature attribute; and according to the signature attribute associated with the annotation picture of the signature domain, carrying out signature verification on the content data of the corresponding annotation range of the corresponding annotation picture. According to the embodiment of the invention, the signature verification accuracy of the to-be-signed document is improved.

The invention discloses a method for extracting equipment fingerprint information in a wired network card signal, which comprises the following steps of: performing normalization processing and judgment on an input signal to obtain a judgment signal; performing rising edge and falling edge clock extraction on the judgment signal, and synchronizing a local clock to obtain a synchronous clock; sampling the judgment signal by using a synchronous clock to obtain an ideal waveform synchronous with a local clock; using the ideal waveform signal as the filtering input of the adaptive filter and processing, so that the ideal signal approximates the received signal with the minimum mean square error after filtering, wherein the adaptive filter parameter at the moment is the equipment fingerprint of the network card; and extracting fingerprints from the input signals in a plurality of time periods to obtain stable fingerprints of the network card equipment. According to the invention, the device fingerprint information in the wired network card can be extracted, and the device fingerprint with both stability and identifiability is obtained, so that the identity authentication and authentication of the terminal device are realized, and the security of network access is realized.

The invention discloses a microgrid power big data transaction management system applying a blockchain and artificial intelligence. The method comprises the following steps that an electricity purchasing receiving module organizes an electricity purchasing unit price of which transaction is completed according to previous electricity consumption data records of an electricity consumption side, andrecords the electric quantity required to be purchased at the power utilization side; an electricity price adjusting module uses the average value of the electricity purchasing unit prices which havecompleted the transaction as an initial electricity price and compares the total electricity generation amount of all the current electricity generation sides with the total electricity quantity which needs to be purchased by all the electricity utilization sides, and the intelligent matching module screens the electricity generation sides which can meet the electricity quantity which needs to bepurchased by the electricity utilization sides and selects the appropriate electricity generation sides for matching; according to the invention, on the basis of artificial intelligence, the blockchain technology is combined at the same time, so the intelligence and decentralization of the transaction management system and the non-tampering performance of data are enhanced.

The invention discloses a document data security verification method based on a block chain, which belongs to the technical field of document processing, and is characterized by comprising the following steps: a, a user generates a word document containing a user ID (Identity) by using a national cryptographic algorithm through a word plug-in, and the national cryptographic algorithm comprises an SM2 algorithm and an SM3 algorithm; b, signing the word document, creating user information at a block chain cloud, and generating a CA certificate through a cloud server; c, generating a block through the block chain, binding the CA certificate generated by the cloud server with the user ID, and storing the CA certificate and the user ID in the block; and d, obtaining the certificate of the corresponding user from the block of the block chain according to the user ID of the word document, and completing certificate verification signature. The system has a distributed characteristic, each user can independently sign and verify the electronic document, the precision of a verification result is guaranteed, the electronic document can be written locally, and the operation is more convenient and humanized.