1510 results about "Communications security" patented technology

The invention discloses a bidirectional authentication secure mobile communication method and system based on a public key digital fingerprint, and belongs to the technical field of communication security. The method specifically comprises the following steps: S1, digital certificate application and issuing: a mobile terminal and a service server respectively use an encryption algorithm to generate an asymmetric key pair which comprises a public key and a private key, an entity submits a CSR file which comprises a public key, entity identity information and an extension field to a CA, and the CA strictly audits the entity identity and issues a digital certificate; and performing digital signature on the public key and the entity information by using a CA private key after the auditing is passed. Two-way identity authentication is achieved, communication safety is improved, a traditional scheme only supports one-way authentication of a client to a server and is prone to phishing attack and identity false use, digital certificates are exchanged before communication between a mobile terminal and a service server, the legality of the certificates is verified through a public key of a CA root certificate, and the authenticity of the identities of the two parties is ensured. A bidirectional authentication mechanism effectively prevents man-in-the-middle attack and identity counterfeiting problems, and the security risk is greatly reduced.

The invention discloses a dual-electric brake boosting system for a heavy-duty vehicle and a coordinated control method of the dual-electric brake boosting system, and relates to the technical field of vehicle brake control. The invention discloses a dual-electric brake power-assisted system for a heavy-duty vehicle and a coordinated control method thereof. The coordinated control method comprises the following steps that S1, a multi-source sensor synchronously collects and preprocesses wheel speed, current, suspension and pedal signals; s2, estimating the load in real time through Kalman filtering, and outputting a dynamic load coefficient to guide distribution; s3, triggering interruption when the pedal force change rate exceeds the threshold value, and directly outputting the maximum braking force; s4, dynamically distributing the braking force, predicting the temperature rise, and adjusting the output weights of the double boosters; s5, outputting a digital twinborn verification theory, and starting a compensation algorithm after deviation overrun; s6, encrypting an instruction by a TSN protocol, and ensuring low-delay transmission and communication security; s7, a closed-loop optimization link is formed based on the actual braking data calibration model; the method has the beneficial effect that the real-time performance, safety and reliability of the braking system are comprehensively improved.

The invention relates to a numerical control equipment cooperative scheduling method and system based on a heterogeneous computing architecture, and aims to solve the core problems of multi-brand numerical control equipment protocol isomerism, weak digital twin generalization ability, low multi-objective optimization efficiency, quantum era communication security and the like in the industrial internet. Real-time analysis and unified format conversion of 18 industrial protocols are realized through a PDSA-Chip hardware-level protocol conversion module; in combination with a transfer learning digital twinning technology, cross-brand equipment parameter self-calibration is completed within 72 hours; a quantum annealing and NSGA-III collaborative optimization algorithm is adopted, the machining parameter optimization period is shortened to 1 / 3 of that of a traditional method, energy consumption, precision and the service life of a tool are dynamically balanced, and the service life of the tool is prolonged by 37% in a high-load scene; an NTRU lattice encryption and chaos confusion fused anti-quantum security communication system is constructed, the G code confusion degree is larger than 98%, and SL3-level quantum attacks are defended.

The invention relates to the technical field of quantum communication security, and discloses a quantum key distribution secure communication system based on a quantum mechanics principle. The system comprises a quantum state preparation unit which controls a quantum emission device to output a quantum state sequence containing a preset polarization angle and a phase modulation photon group; a quantum channel feature extraction unit captures channel environment interference parameters and constructs a photon polarization distribution matrix; a quantum communication security evaluation unit receives the matrix, and calculates a channel security coefficient threshold through a quantum bit error rate analyzer; the quantum key dynamic optimization unit generates an optimized key segmentation strategy in combination with a security coefficient threshold and a historical key negotiation record; the quantum key rotation control unit switches quantum state modulation parameters according to a segmentation strategy and a time window; and the quantum node synchronization management unit monitors node clock offset and injects a calibration signal to realize key distribution time slot alignment. The system can dynamically cope with environmental interference, and improves the security and adaptability of quantum key distribution.

The invention discloses an SSL VPN security gateway communication method fused with a post quantum cryptography technology. Comprising the following steps: S1, a client and a server respectively configure a serial hybrid signature digital certificate containing an SM2 algorithm and a serial hybrid encryption digital certificate containing a PQC algorithm, and a corresponding PQC encryption key pair private key, a PQC signature key pair private key, an SM2 encryption key pair private key and an SM2 signature key pair private key; s2, newly adding a hybrid algorithm password suite using an SM2 algorithm and a PQC algorithm in a password suite list of the client, and forcibly jacking the priority of the hybrid algorithm password suite; and S3, a message structure in a handshake protocol is transformed to use a series hybrid encrypted digital certificate to realize that PQC algorithm processing is added on the basis of an original national cryptographic algorithm to realize quantum key negotiation resistance. According to the method, the PQC algorithm is added on the basis of the original national secret algorithm, and the handshake protocol is transformed, so that anti-quantum-attack key agreement and identity authentication can be realized, the communication security is remarkably improved, and meanwhile, the interoperability with the standard SSL VPN is kept.

The invention discloses a multi-node secure communication method and system based on quantum key distribution, and the method comprises the steps: evaluating multi-dimensional parameters of a quantum channel, dynamically updating a node reputation value, constructing a four-dimensional topological graph database, and generating candidate routing paths based on a Monte Carlo tree search algorithm; a state-action space is constructed by further combining reinforcement learning, and path selection is optimized by using a dual Q network and a priority experience playback mechanism; through multi-dimensional channel assessment and node reputation value dynamic updating, the defects of a traditional quantum network static routing strategy are overcome, the communication safety and efficiency are improved, and low-delay and high-reliability key distribution of a complex quantum network is supported.

The invention discloses an anti-quantum security data transmission authentication method based on an SLH-DSA, and aims to cope with communication security challenges in a quantum computing environment. The device generates a key pair locally in a registration phase and applies for an anti-quantum identity certificate from a certificate agent. In the authentication stage, a user exchanges an identity certificate and a key parameter to realize identity authentication and negotiate a shared key. In the data transmission stage, a session key is dynamically derived by using a shared key, data is encrypted in combination with a national secret symmetric encryption algorithm SM4, and integrity verification is performed by using an anti-quantum signature algorithm. The method gives consideration to security, lightweight and performance, has quantum attack resistance and forward security, is suitable for application scenarios with high data security requirements, such as industrial Internet of Things and smart power grids, and has good application prospects and popularization values.

The invention discloses a door lock communication group decomposition method and system, and the method comprises the steps: encrypting and issuing a sub-feature vector to a local storage of a corresponding member door lock through a secure channel according to the sub-feature vector generated by a main control door lock and a binding relation between the sub-feature vector and the member door lock; generating a multicast message containing a target subgroup feature vector and a digital signature according to a splitting request sent by a main control door lock; according to the result of querying the local ARP table and the subgroup registry by the multicast router, determining the subgroup to which the door lock connected with each interface belongs, and registering the corresponding sub-feature vector for the corresponding interface in the multicast forwarding table; and according to a detection message sent by each sub-group master control door lock and a confirmation message of a member door lock, the multicast router identifies and removes sub-feature vector registration of an interface which is not associated with an effective door lock, and communication group decomposition is completed. By utilizing the embodiment of the invention, safe, reliable and interface-level refined door lock group decomposition can be realized, and the splitting efficiency and the communication safety are improved.

The invention relates to the technical field of network communication security, and discloses a real-time encrypted transmission network communication security guarantee system, which comprises a dynamic fragmentation quantum resistance encryption module, a flow perception-based adaptive encryption engine, a zero-handshake continuous identity authentication module and a hardware acceleration fragmentation processing architecture, and the dynamic fragmentation quantum resistance encryption module is configured to segment a data stream into a plurality of fragments according to a time window, and independently generate an unassociated key for each fragment based on a quantum security NTRU algorithm. According to the network communication security guarantee system for real-time encryption transmission, the traditional network communication security guarantee technology is comprehensively innovated, and the problems of static key management, encryption algorithm adaptation, data fragmentation encryption, identity authentication and encryption cooperation, quantum computing threat response and the like are successfully solved; and the performance of the system in key performance dimensions such as security, real-time performance, adaptability, reliability and anti-attack capability is obviously improved.

The invention relates to the technical field of communication security, in particular to a communication encryption method and device, equipment, a storage medium and a computer program product. The method comprises the following steps: dynamically generating a main session key between two communication parties based on a preset key negotiation protocol; dynamically generating sub-keys according to a preset time interval based on the main session key and the key sequence; performing encryption processing on each data block in the communication data stream based on the sub-key and the encryption strategy; generating a message authentication code for each encrypted data block; adding timestamp information based on the message authentication code, and introducing a random offset into the timestamp information; and the encrypted data blocks, the message authentication code and the timestamp information are packaged into the target data message, so that the transmission security of the communication data is improved.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for physical layer security for passive Internet of Things (IoT) devices. In some aspects, a source device and a reader device may communicate via a passive wireless device, such as an IoT tag, which may reflect or backscatter signaling from the source device to the reader device. The source device, the reader device, and the passive wireless device may secure communication in a physical layer (PHY) in accordance with one or more PHY security keys. As such, the source device may transmit a first message to the passive wireless device in accordance with a first PHY security key and the passive wireless device may transmit a second message to the reader device in accordance with a second PHY security key to secure communication to and from the passive wireless device.

The invention provides a data security risk early warning method and system based on big data analysis, and the method comprises the steps: firstly constructing a data security risk feature map, collecting a heterogeneous data set in a mobile communication network in real time through a multi-source data access interface, generating a multi-source heterogeneous data fusion stream through distributed cleaning and standardization processing, and carrying out the data security risk early warning. Then inputting the data security risk feature into a preset distributed risk feature learning network, performing feature mapping and association enhancement processing based on a data security risk feature map to obtain a real-time risk feature vector, performing big data association analysis on the real-time risk feature vector, mining a risk feature conduction dependency relationship, generating a risk propagation path weight set, and performing big data association analysis on the real-time risk feature vector; and finally, determining a risk diffusion level and a key influence node, generating a security risk early warning instruction containing a risk diffusion path identifier, and pushing the security risk early warning instruction to a mobile communication security management platform, thereby realizing accurate early warning and quick response of the data security risk, and ensuring safe and stable operation of a mobile communication network.

The invention discloses a method for applying an anti-quantum certificate to a TLS1.2 handshake process, which realizes the application of an MLDSA anti-quantum signature algorithm and an MLKEM anti-quantum key encapsulation mechanism in the handshake process by expanding a cipher suite and a signature algorithm field of a TLS1.2 protocol. The method specifically comprises the following steps: defining a cipher suite supporting MLKEM and an MLDSA signature algorithm enumeration value; the client declares algorithm support in ClientHello, and the server responds and returns a certificate chain containing the double-antibody quantum certificate; after the client verifies the certificate, the pre-master key is encapsulated by using MLKEM, and the server de-encapsulates the derived session key; and the two parties send Finished messages to each other to complete handshake. According to the scheme, on the premise that a TLS1.2 basic framework is not changed, the communication security is enhanced through double-resistance quantum algorithm integration, international and national cryptographic algorithms are supported, quantum computing attacks can be resisted, meanwhile, adaptation of the international and national cryptographic algorithms is supported, compatibility with an existing system is ensured, the security risk of a traditional cryptographic algorithm in a quantum environment is solved, and the security risk of the traditional cryptographic algorithm in the quantum environment is reduced. And a standardized solution is provided for anti-quantum upgrade of the TLS1.2 protocol.

A system and method for inferring an operating system version for a device based on communications security data. A method includes identifying a plurality of sequences in communications security data sent by the device; determining an operating system type of an operating system used by the device based on the identified plurality of sequences; applying a version-identifying model to the identified plurality of sequences, wherein the version-identifying model is a machine learning model trained to output a version identifier, wherein the applied version-identifying model is associated with the determined operating system type; and determining the operating system version of the device based on the output of the version-identifying model.

The invention provides a trajectory design method and system in an unmanned aerial vehicle hidden and sensing integrated network, and the method comprises the steps: firstly deducing a multi-listener cooperative receiving signal expression and a probability density function in the sensing integrated network with multiple cooperative listeners; then deriving a minimum detection error rate expression of multi-listener collaborative detection and an optimal power division ratio expression meeting covert communication constraints based on a maximum likelihood principle; and establishing an unmanned aerial vehicle track and scheduling optimization problem of anti-cooperative detection in the unmanned aerial vehicle hidden and inductive integrated network according to the deduced formula. And finally, iteratively solving the problem based on convex approximation and an ellipsoid method to obtain an optimal unmanned aerial vehicle trajectory and scheduling. According to the method provided by the invention, the covert communication requirement in the unmanned aerial vehicle communication perception integrated network can be well met, and the communication safety in the future unmanned aerial vehicle Internet of Things is improved.

A method and device for a relay User Equipment (UE) are disclosed. The relay UE receives a first direct communication request message from a source end UE for establishing a UE-to-UE (U2U) relay communication with a target end UE. The relay UE also sends a second direct communication request message to the target end UE in a direct link establishment procedure used for establishing a direct link for supporting the U2U relay communication. The relay UE further receives a direct communication security request message from the target end UE for triggering the relay UE to perform a key request procedure with a network. In addition, the relay UE sends a direct communication security reject message to the target end UE if the key request procedure with the network fails. Furthermore, the relay UE aborts the direct link establishment procedure after sending the direct communication security reject message.

The invention relates to the technical field of equipment communication security, in particular to a network security control system and method for multilevel protection of Internet of Things equipment communication, comprising a protocol security adaptation layer, a heterogeneous equipment authentication module, a behavior baseline modeling unit and an adaptive defense decision engine, the security conversion of a plurality of Internet of Things communication protocols is supported; the heterogeneous equipment authentication module adopts a differential authentication strategy, and dynamically adjusts authentication strength for different equipment types; the behavior baseline modeling unit generates an equipment communication mode fingerprint database through time sequence analysis; and the adaptive defense decision engine associates the security event with the network topology in real time to generate a dynamic isolation and flow control strategy. Therefore, the problems that in the prior art, protocol compatibility is poor, an authentication mechanism is rigid, behavior analysis is static, threat response is lagged, resource scheduling is unbalanced, and auditing tracing is not credible are solved.

The invention discloses a vehicle-mounted communication safety protection method and related equipment, and relates to the technical field of vehicle-mounted communication, and the method comprises the steps: generating a multi-dimensional normalized time sequence feature vector according to the service call information, the message entropy value and the event group response information of vehicle-mounted Ethernet communication; performing integrity verification on the vehicle end detection model through the trusted execution environment to obtain a verification result; when the verification result is that the verification is passed, inputting the multi-dimensional normalized time sequence feature vector into a vehicle end detection model for anomaly detection, and determining a real-time threat level; and performing defense response on the vehicle-mounted Ethernet communication according to the real-time threat level. Through combination of time sequence analysis, a trusted execution environment, local real-time detection and dynamic defense, the identification capability of unknown attacks is improved, the detection model is prevented from being tampered, the detection time delay is reduced, and faster, more accurate and more stable vehicle-mounted network security protection can be realized.

The invention discloses an Internet of Things secure access method based on cloud edge collaboration, which comprises the following steps: firstly, an Internet of Things device and an edge server respectively register in a CSC (Content Service Controller), and obtain an intelligent card or related data to complete information updating and storage; the equipment is inserted into an intelligent card to log in, and data are sent to the edge server after identity password verification; the edge server verifies the timestamp and then forwards the data to the CSC; the CSC verifies the timestamp and the identity, generates a session key parameter and sends the session key parameter to the edge server; the edge server verifies the identity of the CSC and then generates session key encrypted data to be transmitted back, and after the verification of the device is passed, secure communication is established. According to the method, mutual verification and encryption protection are adopted in identity verification; a timestamp, a random value and strict verification are used for message transmission to prevent replay and man-in-the-middle attack; secret key management guarantees safety through dynamic change of secret values, attacks such as physical capture are resisted in combination with PUF, and communication safety is comprehensively guaranteed.

The invention discloses a key sharing and security detection scheme based on an intelligent electric meter, and aims to solve the problems that an untrusted electric meter in an intelligent power grid is difficult to identify effectively, the detection scale is uncontrollable and the communication security is insufficient. According to the scheme, the elliptic curve cryptography, the threshold secret sharing mechanism and the physical unclonable function are combined, and hardware-level binding of the unique identity of the equipment and the secret key is achieved in the registration stage. Through a threshold password mechanism, a plurality of intelligent electric meters cooperatively participate in key reconstruction and encryption communication, and the intelligent electric meters can still work normally when part of the electric meters fail or are broken through. The center node can actively identify a fault or a malicious ammeter and dynamically adjust a communication strategy according to the integrity and correctness of the feedback information. Meanwhile, the scheme supports dynamic identity updating and integrity verification, and effectively resists modeling attacks, Sybil attacks, replay attacks and DoS / DDoS attacks. According to the invention, secure identity authentication, reliable key distribution and efficient anomaly detection are realized, and the security of smart grid terminal communication is improved.

The invention relates to the technical field of electric power communication security, in particular to a power grid data secure transmission system and method based on quantum cryptography and a medium, comprising: a power grid data access module extracts identities of a power grid data request end and a target response end; the quantum key distribution module obtains an original shared key pre-stored by the two communication parties, and generates a quantum key according to the one-time session password and the original shared key; the communication security management module analyzes the shared key information from the quantum key received by the target response end to obtain analyzed shared key information, and performs communication security verification on the original shared key and the analyzed shared key information; and the power grid security communication module encrypts the to-be-transmitted power grid data when the communication security verification result is that the verification is passed, and transmits the power grid encrypted data to the target response end. Through cooperation mechanisms such as quantum key dynamic distribution and security verification, security protection of power grid data transmission is realized, and power grid data communication security is improved.

The embodiment of the invention provides an Internet of Things authentication method and electronic equipment, and relates to the technical field of communication security, and the Internet of Things authentication method comprises the steps: obtaining a dynamic key element of terminal equipment; generating a dynamic key of the terminal equipment according to the dynamic key element, the static identity public key of the terminal equipment and the identity identification information; the static identity public key is obtained through calculation based on hardware fingerprint information and identity identification information of the terminal equipment and pre-configured bilinear pair parameters; sending an authentication request to an access point accessed by the terminal equipment; the authentication request carries identity identification information and a dynamic key; and the access point is used for acquiring the static identity public key from the block chain system according to the identity information, and authenticating the dynamic key based on the static identity public key. According to the method and the device, the security of the dynamic key can be ensured from multiple aspects, the authentication process can be accurately and efficiently completed without pre-storing a public key certificate, and the communication security between the terminal equipment and the access point is improved.

The invention relates to the technical field of network security monitoring, in particular to a multipath network communication security guarantee method based on an adaptive encryption algorithm, comprising: acquiring a network undirected graph corresponding to a target network, the network undirected graph comprising a first node set, a second node set and an undirected edge set, the first node is used for collecting and managing data, the second node is used for monitoring the safety state of the first node, and the undirected edge is used for connecting the first node and the second node. According to the method, the behavior of the second node in the network is subjected to feature extraction, the trust level of each node can be dynamically evaluated and adjusted in combination with the pre-trained trust classification model, and the self-adaptive feature can effectively adjust the communication security level according to the actual situation, so that the security of the network is improved, and the user experience is improved. And potential security threats or malicious nodes can be identified by monitoring and analyzing the behavior of the second node.

The invention relates to the technical field of communication transmission, and particularly discloses an all-in-one machine encryption communication transmission method and system based on a dynamic strategy, and the method comprises the steps: collecting hardware state parameters, network environment parameters and communication content characteristics of an all-in-one machine and a target communication opposite end in real time; calculating a risk index of the current communication process based on the network environment parameters of the all-in-one machine and the target communication opposite terminal; matching an encryption algorithm sequence, a key updating frequency and a transmission protocol according to hardware state parameters, risk indexes and communication content characteristics of the all-in-one machine and a target communication opposite end, performing segmented encryption and multi-channel parallel transmission on communication data of the all-in-one machine, and performing security key distribution in combination with a distributed key management mechanism to obtain a security key; performing encrypted communication security verification based on the security key to obtain communication verification data; the security of the communication process of the all-in-one machine is improved, and the risks of data leakage and man-in-the-middle attack are prevented.

The invention discloses a communication security monitoring system and method based on a block chain technology, and relates to the technical field of communication security. The method comprises the following steps: S1, initializing a system; s2, collecting communication data; step S3, block chain storage; s4, data security monitoring is carried out; s5, updating the dynamic strategy; step S6, cross-chain tracing is carried out; and S7, a maintenance stage. According to the method, node identity registration and dynamic fragmentation are created, a main chain creation block is generated, double-flow features are analyzed, abnormal index calculation is performed, real-time alarm is performed, a tracking path is generated, and an evidence chain is generated and packaged, so that the security level of the system and the evidence chain generation efficiency are improved, and the storage space and cost are reduced.

Various embodiments may provide communication security at a physical layer. In some embodiments, a first wireless device at a first location may transmit to a second wireless device at a second location different portions of a message via two or more different spatially separated signal paths in a manner that enables the second wireless device to receive the complete message but prevents reception of the complete message by a third wireless device at a third location different from the second location. The second wireless device may receive different portions of the message via the two or more different spatially separated signal paths, may assemble the message from the received different portions of the message.

The invention relates to the technical field of 8G, and discloses a nuclear fusion plasma real-time control method and system based on a quantum neural network and 8G communication. The method comprises the following steps: transmitting plasma multi-dimensional electromagnetic parameters at a rate greater than or equal to 1Tbps through an 8G terahertz communication network; quantum dimension reduction (the dimension compression ratio is greater than or equal to 98%) and classical time sequence prediction are executed at the edge quantum computing nodes; a control instruction is transmitted to the superconducting magnet array through the photon integrated interface, so that the adjustment of a magnetic field smaller than or equal to 1nm is realized; physical layer quantum encryption is adopted to guarantee communication security, and the secret key distribution rate is larger than or equal to 20 Mbps.

The invention relates to the technical field of wireless communication, and discloses an unloading method in an ultra-dense millimeter wave MEC network. Aiming at the problems of insufficient terminal capability, high energy consumption of an ultra-dense base station, millimeter wave coverage limitation, communication security risk and the like under the condition of sharp increase of a calculation-intensive task, the method comprises the following steps: firstly, obtaining network basic information, constructing a network architecture containing communication, calculation unloading and a security model, and establishing a multi-constraint optimization problem; based on the optimization problem, initializing a multi-strategy black-wing plinuary optimization algorithm population through logic mapping and elite selection; updating individual positions through global and local search in algorithm iteration, and screening historical optimal individuals; and finally, configuring and unloading resources according to the configuration. According to the method, the NOMA technology, a multi-step unloading framework and a hybrid communication mode are combined, the optimization efficiency is improved through a multi-strategy black-wing optimization algorithm, the local energy consumption is reduced, the communication rate is improved, the safety is guaranteed, the optimal scheme meeting time delay and safety constraints is rapidly converged, and the user experience is improved.

The invention provides a multi-user near-field secure communication method based on stacked intelligent metasurfaces, and relates to the technical field of wireless communication. The method comprises the following steps: obtaining an equivalent beamforming matrix and a first-layer channel transmission matrix of an SIM according to parameters of the SIM in a base station; according to the transmission distance between the SIM and the user and the transmission distance between the SIM and the eavesdropper and the parameters of the SIM, modeling a near-field channel to obtain a near-field channel model; obtaining a data transmission rate in combination with a beamforming vector of the base station, and further determining the security and the rate; and by taking maximization of the safety and the rate as a target, constructing an optimization model and decomposing the optimization model into two sub-problems to carry out alternate iterative optimization so as to obtain an optimized equivalent beam forming matrix and an optimized beam forming vector. An SIM is introduced, the freedom degree of beam regulation and control is increased, optimization is carried out on the basis of a near-field channel model by taking maximization of safety and rate as targets, legal users and eavesdroppers are effectively distinguished, signal energy is accurately guided to the legal users, and the communication safety is improved.

The invention discloses a radio frequency fingerprint identification method and system based on a double-path cross attention fusion network, and is suitable for an application scene under a low signal-to-noise ratio condition. In an Internet of Things system, prevention of security threats such as illegal monitoring, data tampering and equipment pretending is a basis for guaranteeing user communication security. The radio frequency fingerprint identification technology based on physical layer feature authentication is generated at the right time, has the characteristics of passive authentication, no need of a secret key and the like, and is widely used for enhancing the identity authentication capability of a wireless network. However, in the prior art, the recognition performance is limited in a low signal-to-noise ratio environment, so that how to improve the recognition accuracy in the scene becomes a key problem to be broken through urgently. According to the radio frequency fingerprint identification method based on feature fusion provided by the invention, the one-dimensional radio frequency signal and the two-dimensional time-frequency graph are subjected to multi-modal fusion through the double-path cross attention fusion network, and useful complementary features are further extracted from noise, so that the influence of the noise is reduced, and the identification accuracy of unknown equipment is improved.