7 results about "Secure coding" patented technology

The invention discloses a foundation pit support deformation real-time monitoring method based on edge calculation, and aims to solve the problems of multi-node time synchronization and clock drift compensation caused by unavailability or poor quality of satellite navigation and precise time protocols in an underground or shielded environment. According to the method, through event dictionary learning, partition time slot scheduling and safety coding micro excitation time synchronization, matched filtering decoding, multi-scale arrival time estimation, paired time difference robust fusion, frequency priority and phase speed limit correction and network disconnection time holding, the time synchronization efficiency is improved; the technical effects that multi-source data alignment, deformation field reconstruction and graded early warning are completed on the unified virtual reference time scale, and high-precision synchronization and online drift compensation are obtained without depending on the external time service condition are achieved.

The invention relates to the technical field of federated learning, and discloses an internet cross-platform data security sharing method and system based on federated learning, and the system comprises a cross-platform client module, a coordination service network, a distributed key management cluster and a block chain evidence storage and excitation platform. According to the internet cross-platform data security sharing method and system based on federated learning, the difference of underlying platforms is shielded through a data interface and a feature alignment engine, and an end-to-end privacy protection chain is constructed through multi-layer protection of'differential privacy + homomorphic encryption + security communication '; dynamic privacy budget and resource management enable the client to flexibly cope with different scenes, and meanwhile, through early-stage feature alignment and secure coding, the threshold of heterogeneous data participating in federated learning is reduced, so that internet cross-platform data can be safely shared.

The embodiment of the present disclosure discloses a network space asset fingerprint identification method and system. The method comprises the following steps: forming original fingerprint fragments according to four types of metadata of captured network traffic record time sequence, protocol, payload length and direction; extracting equipment communication feature vectors from the original fingerprint fragments; performing dimension reduction processing on the feature vectors to obtain micro-signatures with fixed length; performing unsupervised dynamic clustering on the micro-signatures as input to establish equipment type identification; grouping the micro-signatures according to the equipment type identification, arranging the micro-signatures in time sequence, and splicing the micro-signatures into behavior chains; encrypting the equipment identification and the equipment type identification to generate anonymized equipment ID, securely encoding the micro-signatures, abstracting the behavior chains, and constructing a three-tuple data structure containing equipment ID, secure micro-signature and behavior abstract. The method can solve the technical problems of relying on a large number of pre-labeled training samples, being difficult to identify unknown equipment types, and lacking a secure output mechanism.

The invention relates to a method and system for controlling priority vehicle traffic flow using secure coded signals. By establishing a mechanism for issuing digital identifiers (EC) and a set of anonymous certificates (Certx) that decay over time Ti = T0 . e - ƛi, with ƛ>0 independent along with the establishment of a shared session key between the vehicle and the intelligent system (V2X), allows vehicles to participate, requiring priority traffic flow management while ensuring security, preventing tracking, and eliminating fraudulent vehicles. The process and system for controlling priority vehicle traffic flow using secure coded signals as described in the invention also reduces computational costs and saves system resources, which is beneficial for transportation systems.

The invention relates to the technical field of quantum security calculation, and discloses a multi-party multi-data summation method based on a d-dimensional cluster state, which introduces a semi-honest third party to assist in completing summation calculation, and constructs a bidirectional identity authentication process between a participant and the third party by using a dual one-way hash function, thereby effectively preventing identity impersonation attack. In a multi-party multi-data summation stage, a multi-party quantum information interaction structure is established by using quantum entanglement association between a d-dimensional Bell state and a d-dimensional cluster state, and secure coding and aggregation of private data of participants are realized through Bell measurement. Meanwhile, detection particles from (d + 1) groups of complementary bases are randomly inserted into a quantum channel and are used for detecting potential eavesdropping behaviors and ensuring the safety of a quantum communication process.

The invention relates to a multi-channel hybrid coding transmission system, method, module and terminal based on an FPGA. The system comprises a multi-interface receiving module, a receiving interface data preprocessing module, a multi-interface sending module, a sending interface data preprocessing module, a security coding unit, a fault-tolerant unit and a system control unit which are arranged in the FPGA. After data is sent out from an upper computer and received by an interface in the FPGA, receiving clock domain crossing processing and encoding pre-processing are carried out on the data, data security encoding processing is carried out after completion, the processed data are sent to encoding post-processing, sending clock domain crossing processing is carried out after completion, and finally the data are sent back to the upper computer from an interface module. Compared with the prior art, the system, the method, the module and the terminal have the advantages of flexibility enhancement, expansibility breakthrough, instantaneity improvement, security optimization and fault tolerance rate improvement, and can well solve the technical defects in the prior art.

The application relates to the technical field of quantum security calculation, and discloses a multi-party multi-data summation method based on d-dimensional cluster states, a semi-honest third party is introduced to assist in completing summation calculation, and a two-way identity authentication process between participants and the third party is constructed by using a double one-way hash function, so that identity impersonation attacks are effectively prevented. In the multi-party multi-data summation stage, a multi-party quantum information interaction structure is established by using quantum entanglement correlation between d-dimensional Bell states and d-dimensional cluster states, and Bell measurement is used to realize safe coding and aggregation of private data of the participants. Meanwhile, detection particles from d+1 groups of complementary bases are randomly inserted in a quantum channel, which are used for detecting potential eavesdropping behaviors and ensuring the safety of the quantum communication process.