6 results about "Aggregate signature" patented technology

The application discloses a kind of carbon footprint data revision request verification method and device, belong to data management technical field. Including: in response to the revision request of carbon footprint data from multiple authorized units, obtain the independent attribute signature of multiple authorized units respectively;According to the independent attribute signature of multiple authorized units respectively, verify whether all attributes that each authorized unit possesses include multiple preset core attributes;In the case where all attributes that each authorized unit possesses include multiple core attributes, the independent attribute signature of multiple authorized units is aggregated into corresponding aggregate signature;The validity of aggregate signature is verified, and in the case where aggregate signature passes validity verification, the revision operation corresponding to revision request is executed on carbon footprint data.The method provided by the application significantly improves the verification efficiency in the multi-agency collaborative authorization scenario through the aggregation signature and batch verification mechanism.

This invention relates to the field of water supply supervision. By collecting water meter pulse counting data and environmental parameters, it achieves data standardization and temperature compensation, and generates metering metadata with timestamps, cumulative values, and checksum tags based on the ISO / IEC 14882 standard. On this basis, a sliding window LSTM model is used to identify water use behavior categories and associate them with knowledge graph nodes of regulatory intent, achieving a semantic mapping between behavior and regulatory rules. Combined with blockchain technology, verifiable semantic commitments and evidence certificates are generated through hashing, Merkle root authentication, and aggregate signatures, supporting permission auditing and on-chain traceability based on SNARK zero-knowledge proofs. The system also incorporates feedback data from regulators and uses graph neural networks to dynamically optimize the behavior confidence threshold. This technical solution effectively ensures the data integrity, compliance, and regulatory transparency of water use behavior, enhancing the intelligence and traceability of the water audit system.

The application belongs to the technical field of computers, and particularly relates to an intelligent networked vehicle data credible traceability system and method based on a distributed ledger, which comprises a trusted execution environment module, a group aggregated signature module, a chain decentralized storage network and a distributed ledger, and realizes whole-link credibility measurement of vehicle-end data from the beginning of generation, breaks through the bottleneck of linear growth of signature verification calculation amount, and still maintains efficient operation under the scale of one million vehicles, and provides data traceability ability with legal effect for traffic accident responsibility determination, insurance claim settlement and other scenes.

The application discloses a kind of network information security processing method and system based on blockchain, comprising the following steps: collecting security event source data in network environment and carrying out analysis, generate security processing abstract information;Security processing abstract information is encoded into security state vector;Security state vector generates KZG commitment, gets commitment value, and generates corresponding open proof, collectively encapsulated as HotStuff candidate proposal;HotStuff candidate proposal is sent to different verification node, and signature vote is generated for security processing abstract information;The signature vote that satisfies legal quantity requirement is executed BLS aggregate signature processing, and generates aggregate legal certificate;Commitment confirmation is executed, and chain security processing record is formed;Chain security processing record in blockchain account book is read, target field is verified, and security processing result is output.The application improves the trusted confirmation ability of network information security processing result.

This invention discloses a data asset management method and system based on distributed ledger technology, relating to the field of distributed ledger technology. The method includes: triggering a dynamic evaluation smart contract based on an ownership certificate to generate a dynamic valuation matrix through a federated learning model and an off-chain network; inputting the dynamic valuation matrix into a cross-chain gateway to perform atomic binding operations, and deploying a dynamic token contract on the target chain to output a token certificate; driving a cross-chain transaction engine to process the token certificate through an authentication blockchain protocol to generate a transaction certificate containing a quantum-resistant aggregate signature; and using the transaction certificate to activate a monitoring smart contract to analyze asset state parameters in real time and output adaptive rebalancing instructions. This invention ensures the atomicity of cross-chain transactions in quantum-resistant signature verification, dynamic valuation validity consensus, and automatic fee allocation through an improved hash time-locking protocol and a three-dimensional time window state machine.

This invention belongs to the field of blockchain and distributed system technology, specifically providing a Byzantine fault-tolerant RAFT consensus method based on a deputy leader and threshold BLS signatures. The method includes: fixing a trusted authorizing institution as the deputy leader, which coordinates the collection, normalization calculation, and score broadcasting of performance indicators from all follower nodes, providing a performance basis for election; after a follower's heartbeat times out, it becomes a candidate and initiates an election request to the deputy leader; the deputy leader generates and divides signature shares using the threshold BLS signature system, generates commitment values ​​for each share using the Pedersen commitment scheme, and distributes them; after a candidate initiates a voting request, each node returns its share after multi-dimensional verification; the candidate collects sufficient shares to generate an aggregate signature and submits it to the deputy leader; the deputy leader completes the final verification and decision and broadcasts the leader confirmation message; after all nodes in the network synchronize and update their roles, the new leader leads the heartbeat and log synchronization. This solution ensures the performance reliability of the leader node, improves the cryptographic security of the election signature, standardizes and simplifies the election process, effectively improves the efficiency, fault tolerance, and overall availability of the distributed system consensus process, and adapts to the application needs of large-scale heterogeneous node distributed systems.