190results about How to "Improve consensus efficiency" patented technology

The invention discloses a blockchain consensus method and system, and a computer readable storage medium. The method includes: obtaining information of each transaction in the same batch through a leader node, packaging the obtained information of each transaction to form a block, and broadcasting the formed block to a following node in a blockchain network; verifying the information of each transaction in the block through the leader node, and verifying the received information of each transaction in the block through the following node; and broadcasting voting information aiming at the blockand performing blockchain consensus based on the voting information through each node after passing of verification of the information of each transaction in the block through each node. According tothe method and system, and the computer readable storage medium, the leader node and the following node verify the information of each transaction in the block in parallel and broadcast the voting information after verification to perform consensus, parallel execution of the consensus process is realized, the consensus time is reduced, and the blockchain consensus efficiency is improved.

The invention discloses a block chain system consensus method and device based on an improved clustering algorithm. The invention relates to the field of block chains. The method comprises the following steps: enabling the first clustering center node to receive a plurality of requests, packaging the plurality of requests into blocks; broadcasting to the subconsensus cluster to which the subconsensus cluster belongs for consensus; if the block passes the consensus, enabling the block to pass the consensus, broadcasting the blocks to a backbone consensus cluster for consensus; if the consensusof the backbone consensus cluster is passed, enabling each clustering center node to digitally sign and broadcast the block; packaging the received digital signature set and the block into a submission message, broadcasting the submission message to a sub-consensus cluster to which the submission message belongs, receiving the submission message by each non-clustering center node, verifying the digital signature set, and if the transaction content of the block is verified and executed, storing the block in a chain. According to the block chain system consensus based on the improved clusteringalgorithm, the communication frequency and the data transmission amount required by single consensus are reduced, and the working efficiency of the whole block chain system is greatly improved.

The invention discloses a PBFT consensus system and method based on a reputation value, and the system comprises: communities which are divided into different regions according to regions, wherein each community is provided with different IOT devices, and the IOT devices communicate with each other; slave chains which are used for all members in the community to directly perform data sharing operation; a main chain which is an alliance chain are linearly arranged according to a time sequence and is established an Ethereum or a super account book and is used for guaranteeing credible authentication of intelligent equipment, credible authentication of equipment cross-chains and cross-chain interaction; and slave chain nodes which are used for constructing communication between the slave chain blocks and the main chain, and are used as a communication, verification or candidate according to different reputation values. By implementing the invention, the execution efficiency of the systemis increased, and the effectiveness and quality of trusted services are ensured; the number of consensus nodes is reduced, consensus time is shortened, and a PBFT check point protocol is improved.

The invention provides an electronic evidence obtaining device and method based on a block chain in an Internet-of-Vehicles environment. The method comprises the following steps of S10, offline registration, S20, vehicle online identity registration, S30, real-time evidence storage and S40, query and evidence obtaining. According to the electronic evidence obtaining device and method based on theblock chain in the Internet-of-Vehicles environment, the block chain technology is used for traffic accident electronic evidence obtaining, the integrity, non-repudiation and permanence of evidence are guaranteed through the characteristics of block chain distributed data storage and the like, many problems of traditional traffic accident evidence obtaining are solved, and the evidence obtaining efficiency is high.

The invention discloses a transaction and consensus combined intelligent service transaction blockchain reputation management method and system. The method comprises the steps: generating members in aconsensus group of a current round of intelligent service transaction blockchain system; generating a leader candidate of the round; enabling each leader candidate to pack all transactions of the round into a block and send the block and the certificate to a consensus group; enabling the consensus group member to operate a reputation-based consensus mechanism and then publish the blocks to the blockchain; and enabling the leader to update the reputation change of the round into the reputation block and publishes the reputation block. According to the method, a verifiable random function is used for generating a leader, so that computing power waste is avoided, and part of nodes with relatively high reputation are selected to implement a consensus mechanism to reduce system load and network flow; the reputation score affects the weight of the voting node in the consensus, so the node with a higher reputation value can obtain rewards more possibly through a weighted sampling algorithm,the reputation chain is used for storing and updating the reputation of the node, and a trusted third party is not needed to manage the reputation.

The invention discloses a method of enabling a front end computer to participate in block chain consensus. The front end computer takes the maximum height H of 2/3 and more consensus nodes, 1 is addedto the maximum height H, and a latest block height is thus obtained; new transaction data are transmitted to all other consensus nodes; after verification by the consensus nodes, a verification result is transmitted to all other consensus nodes; through voting consensus, each consensus node transmits a new block which achieves consensus to a front end node; and the front end node transmits the transaction data which are not written to the block to the consensus node in an updated height.

A block chain hybrid consensus method based on DAG algorithm comprises the following steps: 1.a client collects and verifies transactions or transaction sets; 2, selecting at least two graph nodes whose weight is high than that set value from the DAG network, verifying the transaction validity of the graph nodes or the transaction set, and proceed to the next step after the verification; 3, the client end submits a transaction or a transaction set to the DAG network; Step 4, adopting a second consensus algorithm different from the DAG consensus algorithm to carry out deterministic consensus; 5, the consensus initiator sends a graph node consensus completion message to the DAG network; Step 6: increasing the weight of the graph node in the DAG network.

The invention provides a Byzantine fault-tolerant consensus method and a terminal applied to a coalition chain. The method comprises the steps of in each round of consensus process, according to the private key, serial number, current view and the hash value corresponding to the block generated in the previous round of consensus process, calculating the hash value corresponding to each selected consensus node, thereby the unique first consensus node is selected; And generating proposal information through the first consensus node and sending the proposal information to each consensus node to be selected respectively; according to the verification passing information corresponding to the proposal information sent by the selected consensus node, generating the identification information andtransmitting the identification information to each selected consensus node respectively; and if the number of verification passing information corresponding to the identification information receivedby the first consensus node exceeds the preset number, executing the next round of consensus. By adopting the scheme, the invention not only improves the consensus performance of the alliance chain,but also ensures the safety of the alliance chain.

The invention discloses an intelligent consensus mechanism based on a two-way certificate and suitable for an intellectual property alliance chain, and aims to improve the consensus efficiency, shorten the transaction confirmation time and improve the system fault tolerance by adopting two kinds of certificates, namely a right-interest certificate and a circulation certificate. And on the other hand, as the PBS executes PoW mining in turn, the consensus calculation of system nodes can enable each block to have final consistency, the condition of block chain bifurcation is avoided, and meanwhile, the block output stability is also guaranteed. In addition, a winning accounting right reward of the system node is given to users with more stock rights and high participation degree, so that theactivity of the community can be improved; And the authorized and credible common full node participates in consensus calculation, so that the credibility and the internal transparency of the alliancechain operation can be improved.

The present application discloses a data storage method for solving the problem of low efficiency of consensus network processing in the prior art. The method comprises the following steps: receivinga data chaining request, wherein the data chaining request is used for requesting to write data to be chained into a block chain, and the data to be chained contains summary information of credentialdata; packaging a plurality of pieces of data to be chained received in a first time period into one transaction and broadcasting the transaction to neighboring nodes so that a witness node writes thetransaction into the block chain. The present application also discloses a data storage device, an electronic apparatus and a computer-readable storage medium.

The invention provides a distributed accounting method and device, a storage medium and an electronic device, wherein the method comprises the following steps: obtaining a transaction event and storing the transaction event in a directed acyclic structure, wherein the transaction event comprises one or more transaction records; generating a stage block of the current round according to all transaction events stored in a directed acyclic structure in the current stage, and performing consensus processing on the stage blocks of the current round; after the consensus of the phase blocks of the current round is completed, connecting the phase blocks of the current round to the phase blocks of the previous round in a chain structure. The method combines a directed acyclic structure and a chainstructure organically, records transaction events through directed acyclic structure, so that transaction events can be processed in parallel, transaction throughput is improved, and transaction confirmation delay is reduced. The chain structure is used to store each phase block to make the transaction events in the block reach a definite consensus state, so a guarantee is provided for the execution of intelligent contract and the security of the system is improved.

The invention discloses a block chain consensus method and device based on a Raft algorithm, relates to the technical field of communication, and is used for solving the technical problems that in theprior art, abnormal nodes in a block chain based on a Raft algorithm are easily selected as candidates, and the node activity is relatively low, so that the security of a block chain system is relatively low. According to the invention, the consensus nodes and the supervisor nodes used for obtaining the node information of the consensus nodes can be constructed in the block chain; the height of each consensus node including the block height, Online duration, and node information of the average voting frequency are obtained through the supervisor node; when the consensus node of the leader state ends at any time, the consensus node of the leader state receives the node information of each consensus node sent by the supervisor node, determines and broadcasts the node information to at mostone recommended candidate consensus node according to the node information, converts the state of the recommended candidate consensus node into a candidate state, and enters a next election process. The invention is used for improving the security of the block chain system.

The invention discloses an alliance blockchain decentralized consensus method based on a voting mechanism. The method belongs to the technical field of blockchain consensus, and aims at solving the problems that an existing blockchain consensus algorithm based on the mining mechanism is high in computing power expenditure and low in efficiency, the mining mechanism is abandoned, and reliable consensus is achieved through a voting and deposit adding mechanism. According to the method, the consensus efficiency of the alliance blockchain system is greatly improved, the Hash computing power cost and the transaction confirmation time delay are reduced, and the system throughput is improved; meanwhile, the decentralization characteristic of the system is stronger, and the user fairness of the nodes is better; in addition, malicious behaviors in the alliance blockchain system can be greatly inhibited, and the security of the system is effectively improved.

The invention relates to a blockchain and cloud data collaborative sharing method, belongs to the technical field of security cloud storage, and solves the problems of consistency and collaboration ofdata on and off a chain. The method comprises the steps that a block chain plus cloud storage architecture is adopted, a ciphertext obtained after an original data file is encrypted is stored in a cloud end, and metadata of the original data file is encrypted and stored in a block chain; a data owner DO acquires the encrypted metadata from the block chain, and decrypts the encrypted metadata to obtain a secret key and a ciphertext storage position for encryption; proxy re-encryption is carried out on the ciphertext to generate a new key and a re-encrypted ciphertext storage position; the newsecret key and the re-encrypted ciphertext storage position are shared to a data user DU; and the data user DU downloads the re-encrypted ciphertext from the new storage position, and decrypts the re-encrypted ciphertext by adopting the new key to obtain plaintext information of the cloud data. The storage capacity of the block chain is expanded, and the consensus efficiency is improved; and the data consistency is ensured, and data privacy during data sharing and transmission is protected.

The invention discloses an industry Internet of Things data lightweight trusted sharing mechanism based on a block chain. The mechanism utilizes the block chain and a federated learning algorithm to realize data sharing and privacy protection. The Raft algorithm is optimized in the aspects of owner selection, log replication and safety, the consensus efficiency is improved, and the requirements ofa smart city for time delay and safety are met. A transaction mechanism is designed based on a smart contract, thus standardizing a transaction process, and improving the enthusiasm of an Internet ofThings data holder to participate in data sharing through excitation.

The invention discloses a data processing method based on a block chain network and a related device. The method comprises the following steps: receiving a data acquisition request sent by a target service node; determining a target node set from the nodes included in the blockchain network according to the data type and the data identifier set of the data needing to be acquired by the target service node carried by the data acquisition request and the recorded data storage information of the nodes in the blockchain network; and sending feedback information carrying the node information included in the target node set to the target service node, wherein the feedback information is used for indicating the target service node to acquire required data from the corresponding node according tothe node information included in the target node set. By adopting the mode, the access node can be reasonably suggested for the service node, so that the data acquisition efficiency is effectively improved.

The invention discloses a safe and efficient consensus mechanism implementation method and system, and the method comprises the steps that each node calculates a random number of a current round according to a secret value revealed by a main node of a previous round, and determines the main node of the current round; each round of master node is responsible for collecting votes of each node to a block extracted by the previous round of master node, proposing a new block, revealing an original secret value, selecting a new secret value and disclosing a new secret value commitment; if each nodedoes not collect the voting result sent by the main node within the specified time, each node broadcasts a decryption secret sharing value to recover the secret value of the current main node, calculates the main node of the next round, and votes again. According to the method, the leader replacement process is organically coupled with the normal process, the introduced PVSS scheme can still recover the random number of the current round under the condition that the main node does not respond, the communication traffic and the communication time required for confirming one block are reduced through the chained Hotsuff thought, the communication frequency required in the consensus process is reduced, and the consensus efficiency, performance and safety are improved.

The invention belongs to the field of security authentication in the network space security discipline, and relates to a Byzantine fault-tolerant consensus method based on a distributed key. The method comprises the steps that super nodes participating in consensus are selected, and system common parameters are generated; generating a system public and private key pair and public and private keysof the candidate nodes in a mutual interaction authentication mode according to the public parameters sent by the system; selecting a main node from the super nodes to initiate a proposal request, andstarting a new round of consensus; the secondary node performs individual verification and aggregation verification on the proposal request, and finally determines whether to agree to send the block;after receiving the block, the common node completes time triggering to continue the consensus of the next round, and in the process, if the auxiliary node waits for the case proposal request timeoutor the case proposal response timeout of the main node, the auxiliary node broadcasts the view change request and replaces the main node; according to the invention, the efficiency of reaching the consensus process can be greatly improved.

The embodiment of the invention provides a block chain consensus node verification method and device, equipment and a storage medium, and the method comprises the steps: obtaining message data transmitted by at least one consensus node, and determining consensus verification information corresponding to the at least one consensus node according to the message data; determining the consensus verification information corresponding to each consensus node as to-be-verified information to obtain at least two pieces of to-be-verified information, and determining target verification information fromthe at least two pieces of to-be-verified information; if the quantity of the target verification information reaches a quantity threshold and the to-be-verified information of the current consensus node is the same as the target verification information, determining that the current consensus node belongs to a normal consensus node; and determining that the current consensus node belongs to an abnormal consensus node if the quantity of the target verification information reaches a quantity threshold and the to-be-verified information of the current consensus node is different from the targetverification information. According to the invention, the consensus success rate can be effectively ensured, so that the consensus efficiency of the block chain is improved.

The invention discloses an improved PBFT consensus method based on ISM. The method comprises the following steps: firstly, constructing ISM through a transaction relationship between blockchain nodes,and layering blockchain consensus nodes; and expanding from bottom to top, taking a bottom layer node as a consensus center node and a sub-bottom layer node as a consensus first-level node, and so on, defining a block chain consensus node layering method, and establishing a block chain consensus node layering system. And then, partitioning the layered blockchain consensus nodes by using an exploration method, dividing a plurality of child node clusters participating in consensus, and performing PBFT consensus by using the multi-center child node cluster blocks. And finally, the consensus center node submits a consensus result to the block to realize overall consensus. According to the invention, the hierarchical blocking consensus of the multi-center sub-node cluster is realized, the network congestion problem in the traditional PBFT algorithm is solved, the block chain network broadcast resource waste is reduced, the block chain consensus communication cost is reduced, and the communication and consensus efficiency is greatly improved while the block chain consensus safety is ensured.