254 results about "Eavesdropping" patented technology

The invention relates to the technical field of network security, in particular to a cloud data secure transmission system and method based on a quantum encryption technology. Comprising a quantum key generation and management unit used for generating a physical layer security key, realizing key true random generation through a quantum state unclonable principle, and optimizing key negotiation efficiency by adopting an improved adaptive basis vector matching algorithm; a data transmission encryption unit; a physical layer safety monitoring unit; and a channel fusion switching unit. According to the method, the physical layer security key is generated based on the quantum state unclonable principle, the dependency limitation of a traditional encryption algorithm on mathematics is broken through, and the cracking risk of quantum computing on bottom layer encryption logic can be reduced; according to the invention, photon polarization state parameters are collected in real time through the physical layer security monitoring unit, the eavesdropping behavior is detected based on the preset error rate threshold, real-time perception of the eavesdropping behavior in a transmission link is realized, and the defect that the security state of the physical layer cannot be perceived in real time in a traditional scheme is overcome.

The present technology pertains to systems and methods for one-way authentication of quantum channels. A transmitter generates an entangled quantum state comprising a first state and a second state, modulates the second state according to a clock-synchronized pattern, and transmits it through a quantum channel to a receiver. The first state is retained and measured at the transmitter to extract quantum-state information. Authentication is performed based on this information, without requiring feedback from the receiver. The quantum-state information may be derived using quadrature measurements, Gaussian tomography, or other statistical analyses to detect whether the second state underwent irreversible interactions such as eavesdropping or decoherence. The system enables secure unidirectional quantum authentication, reduces protocol complexity, and supports real-time anomaly detection. It is compatible with continuous-variable quantum states, quantum key distribution (QKD), and scalable communication architectures.

The invention provides a method for assisting a movable antenna to realize secure communication by STAR-RIS, and relates to the technical field of wireless communication. According to the method, the safety and the rate of the system are maximized by jointly optimizing the beam forming of the base station, the position of the movable antenna and the STAR-RIS coefficient matrix. The method specifically comprises the following steps: constructing a downlink MIMO system and establishing a joint optimization problem; decomposing the joint optimization problem into three sub-problems by adopting an alternate optimization framework; respectively utilizing a particle swarm optimization algorithm and a weighted minimum mean square error method to be combined with a Majoritization-Minimalization algorithm to solve each sub-problem, and respectively utilizing the particle swarm optimization algorithm and the weighted minimum mean square error method to be combined with the Majoritization-Minimalization algorithm to solve each sub-problem; and alternately executing related steps until system security and rate convergence to obtain a solution of the joint optimization problem. By the adoption of the method, the safety communication performance of the system is remarkably improved, full-space coverage and precise beam regulation are achieved, the algorithm convergence is high, the solving efficiency is high, and the method is suitable for a downlink system with multiple users and multiple eavesdropping nodes.

The utility model relates to the technical field of eavesdropping prevention, in particular to a terminal anti-eavesdropping device and a terminal anti-eavesdropping system. The device comprises a first connection module, an audio management module, a storage module and an access management module, and the first connection module is used for establishing communication connection with an external terminal to obtain the audio control authority of the external terminal and obtain to-be-stored data; the audio management module is connected with the access management module, and a preset audio signal is built in the audio management module and is transmitted to the access management module; the access management module is connected with the first connection module, the storage module and the audio management module, and the access management module is used for performing data transmission with the storage module, performing data transmission with an external terminal through the first connection module and transmitting a preset audio signal to the external terminal through the first connection module. On the basis of anti-eavesdropping, the system also has data storage and reading functions, and has richer functions.

The invention discloses an electric power production management system security situation awareness method based on a cryptographic algorithm. According to the invention, by deeply fusing SM2, SM3, SM4 and other national cryptographic algorithms and power system characteristics, a full-link autonomous and controllable security protection system is constructed. In a data acquisition stage, SM4 encryption transmission and SM3 hash evidence storage are adopted to ensure confidentiality and integrity of data from a source to processing, and eavesdropping and tampering risks in a transmission process are effectively resisted; in a core situation assessment link, point multiplication operation of SM2 elliptic curve cryptography is innovatively introduced into a node aggregation process of a graph neural network, and graph structure mapping of physical topology of a power system is combined, so that the model can accurately capture implicit association and cascade influence between equipment, and the situation assessment accuracy is improved. At the same time, the recognition capability of the hidden attack mode is enhanced by using the nonlinear transformation of SM4, and the perception depth and anti-attack toughness of the system to the complex threats in the power production scene are improved from the bottom layer of the algorithm.

The embodiment of the invention provides a rail transit quantum communication system data transmission method, device and system and a medium, and relates to the technical field of data transmission. The method comprises the following steps: performing quantum key distribution through a first channel; and transmitting the train data encrypted by the quantum key through a second channel. A quantum communication dual-channel isolation architecture is adopted, namely, a first channel is specially used for quantum key distribution, a second channel is specially used for transmitting encrypted data, a key distribution characteristic of information theory security is realized by utilizing a quantum key distribution technology based on a quantum mechanics principle, key distribution and a data transmission channel are physically isolated, and the security of the key distribution is improved. The risk of secret key and data mixed leakage is avoided, so that traditional eavesdropping and quantum computing attacks are effectively resisted, the safety and integrity of train data in the transmission process are guaranteed, quantum-level safety guarantee is provided for train-ground communication, safety accidents and economic losses caused by information leakage are avoided, and the safety and reliability of train-ground communication are improved. And meanwhile, low time delay and high efficiency of the communication system are ensured.

The invention provides an anti-eavesdropping system and an anti-eavesdropping method for eavesdropping according to a substance vibration principle. The system comprises an anti-eavesdropping intelligent host which is arranged indoors and comprises a pickup module and a signal processing module; the pickup module is used for picking up a sound signal of an indoor target sound source; the signal processing module is connected with the pickup module and is used for processing the sound signal to generate an interference signal; and the at least one interference generator is arranged on a solid isolator for isolating the indoor space from the outdoor space, is connected with the anti-eavesdropping intelligent host, and is used for converting the interference signal into a mechanical vibration signal so as to interfere an eavesdropping device through the mechanical vibration signal. According to the environment medium vibration principle, anti-eavesdropping is effectively achieved through reverse interference of the mechanical vibration signals on the eavesdropping device, and the anti-eavesdropping device has the advantages of being independent of sites, rapid in deployment and low in cost.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a network entity using a first security key of a first security configuration which encrypts a first message sent to or received from the network entity. The UE may then receive a control message that indicates that a wireless device has been detected attempting to intercept or eavesdrop the first message communicated between the UE and the network entity. The control message may identify the eavesdropping wireless device, and may include a second security key associated with a greater security strength than the first security key. The control message may also instruct the UE to switch from the first security configuration to the second security configuration based on the presence of the eavesdropper. The UE may then communicate a second message with the network entity that is encrypted using the second security configuration.

The embodiment of the invention relates to the field of unmanned aerial vehicles, and provides a dynamic game-based air-ground wireless system security deployment and transmission scheme generation method and device and a storage medium, and the method comprises the steps: obtaining an initial model parameter and an event occurrence sequence, and taking a reverse sequence of the event occurrence sequence as a model construction sequence; determining that a planner takes expectation maximization of a weighted value of the transmission cost and the secrecy rate as a planning target, and determining that an eavesdropper takes eavesdropping rate maximization as an eavesdropping target; according to a model construction sequence, a planning target and an eavesdropping target are taken as model construction targets, and a three-stage dynamic game model is constructed according to the initial model parameters; and solving the three-stage dynamic game model based on a two-stage optimization algorithm, and generating a security deployment and transmission scheme of the air-ground wireless system according to target model parameters. By adopting the method, the security of unmanned aerial vehicle data transmission after deployment can be improved, the deployment efficiency is improved, and the deployment effect is improved.

The invention relates to the technical field of wireless communication, in particular to a public network interphone with a quantum chip. According to the interphone, a master control module and a quantum security chip work cooperatively, a quantum random number generator is used for dynamically deriving a session key, and offline security distribution of a group master key is realized by encrypting a two-dimensional code; in a communication process, a system adaptively switches a voice coding mode according to a network condition, end-to-end authentication encryption is carried out on voice data by using a hardware encryption engine, and low-delay transmission is guaranteed through a network priority mark; the device establishes a complete key life cycle management mechanism, supports regular update and forward security of session keys and instant update and backward security of a group master key when members change, and ensures that all key operations are completed in a quantum chip. According to the invention, various eavesdropping and tampering attacks are effectively resisted, and safe, real-time and clear high-confidentiality voice communication in a public network environment is realized.

The application provides a new physical layer encryption and authentication cooperation security method, solves the problem that the ability of encryption technology to resist differential attack depends on the rapid update of a key; at a sending end, a hash function is used to generate an encryption sequence by using the key and the digital features of information, and the information is subjected to the action of the encryption sequence; the encryption sequence will greatly change when the key is unchanged and the information changes, and the digital features of the information before and after encryption remain unchanged; at a receiving end, the received information can be used to regenerate a decryption sequence by using the digital features of the information and the key before decryption, and the decryption sequence is used for decryption; the requirement of key update is greatly reduced, and the rate requirement and the cost of key generation and distribution are reduced. The generation of the digital label required by the authentication does not depend on the ciphertext itself or the plaintext itself, but uses the same signal digital features, the key and the hash function as when the encryption sequence is generated, and better cooperation is achieved, that is, the cooperation realizes the physical layer security, prevents eavesdropping and attack.

The invention relates to the technical field of charging facility network security, in particular to a charging pile and a charging pile control method. According to the charging pile, digital certificate dual verification and encryption communication are carried out between the cloud server and the gateway board, the risk of user information leakage caused by man-in-the-middle attack, data eavesdropping and the like is reduced, and the user experience is improved by carrying out second encryption verification on the gateway board and the control board. The risk that the data of the charging pile are tampered due to counterfeiting of the digital certificate is reduced, and compared with identity verification achieved only based on a cloud server in the prior art, the technical effect of improving the network security of the charging pile is achieved.

The invention relates to the technical field of wireless communication, in particular to a secure communication perception integrated system optimization method based on rate segmentation multiple access and a reconfigurable holographic surface, which comprises the following steps: constructing a secure communication perception integrated system model; constructing a multi-objective joint optimization problem; a multi-objective joint optimization problem is decomposed into three sub-problems, and solving algorithms are designed respectively; and sequentially updating the solutions of the three sub-problems in an alternate iteration mode until a convergence condition is met, outputting an optimal parameter, and carrying out multi-dimensional verification on the system performance. According to the invention, through a rate segmentation multiple access public stream-private stream layered coding mechanism, the system can intelligently convert part of signal energy into man-made interference to potential eavesdroppers, and at the same time, a high-dimensional beam forming degree of freedom provided by a reconfigurable holographic surface is utilized; accurate orientation of legal user signals and accurate control of null depth of an eavesdropping direction are realized.

The invention belongs to the technical field of security and secrecy, and particularly relates to a vehicle secrecy technology detection method and system based on a shielding tent. Constructing a signal isolation environment in the electromagnetic shielding tent; establishing a noise baseline model through spectral analysis; wireless terminal equipment detection is carried out through an all-standard terminal analyzer; a non-linear node detector, an infrared thermal imager, a near-field signal detector, a back scattering type X-ray machine and an endoscope are used for cooperatively scanning in different regions; and by combining algorithms such as big data and machine learning, positioning an overproof signal source, and if a suspicious device is found, disposing according to rules and obtaining evidence. According to the method, the problems of low standardization degree, high equipment false alarm rate, low implementation efficiency and low detection comprehensiveness when the vehicle is subjected to confidentiality technology detection in an open environment are solved. The method is suitable for eavesdropping, stealing and positioning device detection of secret-related vehicles.

The invention discloses a mainboard safety device, belongs to the field of computer hardware and information safety, and aims at solving the problems that an existing safety module is prone to physical attack, bus communication is prone to eavesdropping, a safety window exists in starting, and an encryption algorithm is solidified. The method is characterized in that a security encryption module is physically embedded into an internal layer system of a mainboard PCB, and an active tamper-proof sensing grid layer is arranged around the security encryption module; the module is connected with a CPU slot through a point-to-point safety isolation direct connection channel in the PCB; the module is endowed with authority which is started before the CPU to verify firmware, and a reconfigurable encryption core is adopted. According to the method, the physical cracking resistance is improved through deep embedding and tamper-proof grids, the bus eavesdropping risk is eradicated through an internal direct connection channel, a firmware attack window is closed through prepositive verification, algorithm upgrading is achieved through a reconfigurable core, and a highly-safe and credible computing platform foundation is constructed.

The invention relates to an unmanned aerial vehicle physical layer secret key secret communication method based on an orthogonal time-frequency space. Comprising the following steps: establishing an unmanned aerial vehicle air-ground communication system consisting of a multi-antenna unmanned aerial vehicle base station, ground single-antenna legal users and ground passive eavesdropping illegal users; obtaining channel estimation vectors of all dominant paths by adopting a three-dimensional structured orthogonal matching pursuit algorithm; the method comprises the steps of obtaining a channel characteristic value of a communication channel through a path gain self-adaptive weighted moving average coding method, carrying out double-bit uniform quantization, carrying out Winnow key negotiation based on dynamic grouping and carrying out SHA-2 hash function confidentiality enhancement, and thus obtaining a physical layer key. According to the method, the channel dimension is converted through the orthogonal time-frequency space technology, the influence of Doppler frequency shift is effectively resisted, the channel reciprocity is improved, the key inconsistency rate is reduced, and the safety and stability of a communication system can be remarkably improved.

The invention discloses a dynamic beam hopping and resource allocation method for NGSO satellite security communication, and belongs to the field of sixth-generation mobile communication security communication and wireless resource allocation. According to the method, significant non-uniformity of distribution of ground flow requirements in a time domain and a space domain is considered, and a satellite-ground security communication network dynamic beam hopping and resource allocation problem model is constructed by considering ground user flow requirements and composition elements and channel characteristics of an NGSO multi-beam satellite network. Through joint optimization of satellite hopping beam scheduling, power resource allocation and auxiliary interference unmanned aerial vehicle deployment strategies, service requirements of different users and ground eavesdropping environments are dynamically adapted, and the safety throughput and queue delay fairness of the system are improved. According to the method, mixed integer linear programming modeling is adopted, and a low-complexity approximation algorithm is combined, so that the method not only has optimality guarantee, but also can be deployed and operated in an actual satellite communication system, and thus unification of secure communication and efficient resource scheduling is realized.

The invention relates to the technical field of quantum security computing communication, and discloses a cluster state-based third-party quantum summation method with a bidirectional identity authentication mechanism, which comprises the following steps of: firstly, realizing bidirectional identity authentication between a participant and a third party in a quantum channel by pre-sharing secret identity information and a hash function in combination with a decoy photon technology; and impersonation and man-in-the-middle attack are fundamentally eradicated. And after the authentication is passed, the participant randomly executes measurement or reflection operation on the particle to which the participant belongs, so that an encrypted private key can be generated under the assistance of a third party, and external eavesdropping and internal participant attack can be jointly detected according to an operation combination to form multi-level security protection. Finally, the third party can only calculate the bitwise modular binary sum of the private bit string of each party, and cannot obtain any single input value. According to the method, authentication and calculation are organically fused, unconditional security is guaranteed, and meanwhile, the quantum capability requirements of participants are remarkably reduced.

The invention relates to the technical field of information security, and discloses an intelligent AI portable secret-related place eavesdropping and photo-stealing detection device, which comprises a multi-mode signal fusion detection module, an integrated radio frequency signal sensor, an infrared imaging sensor and a sonic sensor, the self-adaptive frequency spectrum focusing system is used for dynamically adjusting the scanning frequency band and the resolution ratio; the AI drives an imaging optimization processor, and reconstructs a suspicious target image based on the deep neural network; and a lithium battery and a folding directional antenna array are arranged in the portable shell. An AI driving imaging optimization processor adopts a YOLOv5 and U-Net cascade neural network, an infrared image is super-resolved to 1280 * 960 pixels through a feature gradient accumulation resolution optimization formula, and in cooperation with resistance loss function training, detail reduction of a level pinhole lens is achieved, and a hidden target is accurately recognized.

The invention discloses an implementation method of a sub-connection active STAR-RIS assisted secure communication system. A base station, a sub-connection active STAR-RIS, a legal user and an eavesdropping user are included. According to the invention, M units of STAR-RIS are grouped into L sub-arrays, and an amplifier is shared to reduce power consumption and cost; with maximization of system secrecy energy efficiency as a target, base station beam forming, STAR-RIS reflection / transmission coefficients and amplifier amplification coefficients are jointly optimized; and solving the non-convex optimization problem by adopting an efficient algorithm based on block coordinate descent. According to the invention, the hardware overhead and the system power consumption are effectively reduced through the sub-connection structure, meanwhile, the secure transmission efficiency of the system is remarkably improved through joint optimization, multiplicative fading is overcome, and an efficient and reliable solution can be provided for 6G secure communication.

The invention discloses a self-adaptive anti-monitoring communication system, and relates to the technical field of communication security. The system comprises a multi-dimensional fusion sensing module, a dynamic adaptation engine, an encryption communication subsystem and a verification feedback module. The innovation points are that the monitoring situation is accurately researched and judged through multi-source information fusion, a communication parameter and an encryption strategy are dynamically matched based on a research and judgment result, a transmission mechanism combining improved adaptive frequency hopping and dynamic network coding is adopted, and meanwhile, a key dynamic updating and identity bidirectional verification system is constructed. The problems that in the prior art, self-adaptive adjustment is poor in pertinence, encryption and transmission efficiency is unbalanced, and anti-monitoring scene adaptation is single are solved, collaborative optimization of monitoring risk perception, dynamic defense and communication quality is achieved, and the safety and reliability of communication in the complex electromagnetic environment are improved.

The invention relates to a BD-RIS-based auxiliary satellite RSMA system safety performance improvement method. The method comprises the following steps of: decomposing information to be transmitted into a public stream and a private stream by using an RSMA technology according to a cascade channel coefficient from a satellite to a legal user and an illegal node, and calculating a receiving signal-to-noise ratio of the two parties so as to obtain a public stream communication rate and a private stream communication rate of the legal user and an eavesdropping rate of an eavesdropper. And constructing a target function according to the rates, and establishing a BD-RIS reflection coefficient and satellite emission beamforming vector optimization model in combination with a preset loss function. And solving by adopting a double-circulation PDD algorithm, splitting the problem through a BCD method, processing non-convexity through SCA, firstly relaxing symmetric unitary constraint of a reflection coefficient matrix, and then projecting to obtain an optimized vector and matrix. By adopting the method to calculate the system security transmission rate, the security performance is enhanced.

The invention discloses a multi-user single-eavesdropper resource management and optimization method based on a Stackelberg game, and in a network scene with eavesdropping equipment, although each user can improve the data transmission rate by improving the respective transmitting power, the data eavesdropping rate of the eavesdropping equipment is also increased at the same time. How to carry out modeling of effective resource allocation for data sending power of users is a key problem to be solved in the invention. Based on the above problem, the invention provides a multi-user single-eavesdropper resource management and optimization method based on the Stackelberg game, the multi-user power distribution and eavesdropper eavesdropping rate limitation problem jointly form a game model, and Taylor expansion is adopted to convert the original non-convex optimization problem into a convex optimization problem for modeling.

The application discloses a kind of based on multi-scale control technology's unmanned system cooperation privacy protection method, belong to unmanned system safety cooperation control field.This method solves the ill-conditioned numerical problem in the cooperative control of unmanned system with fast-slow coupling characteristics, and the state privacy leakage problem caused by communication eavesdropping.Scheme includes: establishing system dynamic model;Design the differential privacy leader-following multi-scale cooperative controller containing attenuation noise;Obtain the standard singular perturbation form of error system through matrix transformation;Based on multi-scale control theory, solve the state control gain that guarantees mean square consistency;Determine the noise control gain and privacy parameter in combination with probability theory and matrix spectral theory.The present application avoids the ill-conditioned numerical problem, and the controller is robust, while achieving accurate cooperative control, provides verifiable differential privacy protection for the initial state of the system, significantly improves the safety and reliability of unmanned system in the hostile environment.

The application discloses an RIS-assisted zero-forcing beamforming method based on a physical layer security technology, and the method comprises the following steps: constructing an RIS-assisted downlink MISO security transmission system model, constructing a passive eavesdropping user mathematical model based on random geometry, and constructing a legal user and eavesdropping user received signal-to-noise ratio expression; constructing a legal user received signal-to-noise ratio maximization optimization problem model, including determining optimization variables, an objective function and constraint conditions, and pre-designing a transmission beamforming vector based on a zero-forcing algorithm; constructing a joint optimization transmission beamforming and reflection beamforming vector algorithm, dividing the legal user received signal-to-noise ratio maximization optimization problem into two sub-problems for solving, and optimizing the reflection beamforming vector at the RIS and the transmission beamforming vector at the base station. The application jointly optimizes the transmission beamforming vector and the reflection beamforming vector, and realizes the optimization target of legal user received signal-to-noise ratio maximization.

The application discloses a kind of based on multi-agent reinforcement learning's dual unmanned aerial vehicle edge computing system security unloading method, first construct the dual unmanned aerial vehicle auxiliary edge computing system model under the condition of ground multiple eavesdropping;Again, the reciprocal of the normalized energy consumption and delay of system user is calculated as optimization target, and the optimization target is defined as user demand satisfaction.Through the joint design of the 3D trajectory of dual unmanned aerial vehicle, user transmission power and computing frequency to maximize user demand satisfaction.In order to solve the optimization problem, first model the optimization problem as Markov decision process, and then solve the trajectory optimization and dynamic resource allocation problem in the unmanned aerial vehicle assisted edge computing by using MADDPG algorithm in deep reinforcement learning.The dual unmanned aerial vehicle edge computing system security unloading method based on multi-agent reinforcement learning proposed in the application can reduce the delay and energy consumption of system users under the premise of ensuring the security of user offloaded data, and thus improve the user demand satisfaction.

The application discloses an ISAC system security transmission method for an illegal RIS scene, and the method constructs an ISAC system based on RIS assistance to simultaneously complete communication and sensing tasks. The sensing signal can effectively interfere with the IRIS-assisted eavesdropping link while completing the sensing task. In order to more effectively cope with the system security performance deterioration challenge brought by IRIS, a beamforming matrix of the radar signal is designed. Considering the uncertainty of the accurate position of the eavesdropper (Eve), the ergodic security rate is used to represent the security performance of the system, and an approximate ergodic eavesdropping rate is derived. In order to efficiently solve the two non-convex optimization problems, the ergodic objective function is appropriately converted, and then an efficient alternating optimization algorithm is proposed to solve each optimization variable. It is verified that the joint beamforming and RIS reflection design of the application is more effective in coping with the eavesdropping process of IRIS, and it is revealed that the radar beamforming design plays a key role in alleviating the influence of IRIS.

The application discloses a kind of unmanned aerial vehicle inspection data security transmission method and system based on 4G private deployment.The method comprises: deploying 4G non-public network containing communication perception integrated base station, and identifying illegal eavesdropping channel by active eavesdropping perception module;Task unmanned aerial vehicle and the physical layer protection system of collaborative protection unmanned aerial vehicle are constructed, and task unmanned aerial vehicle transmits integrated beam back data and locates eavesdropper, and protection unmanned aerial vehicle directional transmission interference signal;End-to-end encryption and identity authentication are executed on the basis of physical layer protection, and form double security mechanism;With the security transmission rate under unit energy consumption as optimization goal, establish joint optimization model;The model is decomposed into two coupled sub-problems and solved alternately, and after iterative convergence, according to optimal parameter, security transmission is executed.The application reduces system energy consumption while ensuring the security transmission of inspection data by double protection of physical layer and cryptographic layer, double unmanned aerial vehicle cooperation and security energy efficiency joint optimization.

The application discloses a kind of parallel machine detection method and system for pcm telephone system, it is related to communication security technical field, comprising the following steps: S1, when telephone is first opened, collect the reference pressure difference between A-B line in hands-free state and off-hook state, and the reference pressure difference is stored as health profile data, constructs health profile;S2, actual pressure difference between A-B line is continuously detected in the process of talking, sampling frequency cannot be lower than 1 time per second, and real-time dynamic monitoring is carried out to pressure difference value.The parallel machine detection method and system for pcm telephone system proposed in the application, by constructing health profile when telephone is first opened, accurate reference is provided for subsequent detection, effectively distinguishes normal communication state and illegal parallel machine eavesdropping behavior, in the process of talking, system real-time dynamic monitoring pressure difference between A-B line, in combination with line abnormality detection, can accurately identify and shield the misjudgment caused by fault, improve the reliability of detection.

The invention discloses an MASs consistency logic security control method under hybrid attacks, and relates to the technical field of multi-agent system security control, the method comprises the following steps: firstly initializing MASs system parameters, and realizing data confidentiality protection and information tampering detection by an LSPM through a two-layer key mechanism of symmetric key encryption and asymmetric key signature; designing a segmented consistency controller for a mixed scene of eavesdropping, information tampering containing content and identity source tampering and DoS attack, and deriving a linear matrix inequality LMIs through a time-varying Lyapunov function LKFs to solve controller parameters; and finally, continuously executing data security transmission and state adjustment to ensure that the MASs realizes leader-follower LF consistency. According to the method, when the MASs face mixed network attacks such as eavesdropping, tampering and denial of service, a comprehensive guarantee with confidentiality, integrity and authenticity is provided, and the reliability that the system finally realizes a consistent control target is ensured.