75 results about "Security design" patented technology

The invention belongs to the technical field of SoC design and verification, and discloses an RISC-V security SoC verification and evaluation method based on a virtual platform, and the method comprises the steps: building a processor behavior mode according to a target design requirement, and carrying out the configuration of a selectable RISC-V instruction set; building a transaction-level model of the bus, the peripheral and the security module library; performing circuit-level design, and defining a time sequence, an area and a power consumption model of each module; adjusting the configuration file setting of the security module library to determine a security module to be started, constructing an SoC virtual platform, and calculating the area of the designed security SoC; simulating an application program on the virtual platform, and recording time sequence and power consumption data simulated by the virtual platform; the simulation result is compared with the expected area, time sequence and power consumption data, and if the comprehensive evaluation result meets the safety SoC design requirement, the virtual platform designed in the round is determined as the final design scheme. According to the invention, simulation verification and performance evaluation of the RISC-V security SoC are realized.

To provide a safety design device, a safety design method, and a safety design program capable of deriving a security parameter whose safety is guaranteed in encryption design based on a Reused-A-LWE problem using a discrete Gaussian distribution as an error distribution.SOLUTION: A safety design device 1 includes: an inputting portion 11 that receives input of parameters n, m, q, s1, s2 of a Reused -A-LWE problem with a discrete Gaussian distribution as an error distribution; a calculation portion 12 that calculates a parameter sb of the LWE problem with the discrete Gaussian distribution as the error distribution from the parameter s1 and a constant C; an acquiring portion 13 that acquires a security parameter λ of the LWE problem by a calculation formula that guarantees predetermined safety; and an outputting portion 14 that outputs the acquired security parameter λ as a security parameter of the Reused -A-LWE problem.SELECTED DRAWING: Figure 1

The present invention discloses a watchdog circuit and a method for recovering a satellite computer fault that combines software and hardware, and belongs to the field of aerospace computer security design. The watchdog circuit proposed by the present invention generates three dog bite signals, and measures are taken in sequence according to the severity of the fault, which can ensure that the fault is effectively resolved. The satellite computer fault recovery method that combines software and hardware of the present invention adopts a redundant dual-machine cold standby design for the satellite computer, and a single machine has a watchdog circuit that can generate non-maskable interrupts, system resets, and signals to open the other machine in sequence; if a hardware failure causes continuous abnormal resets, it is impossible to enter the normal working mode. The software adopts the following strategy: the host machine switches to the standby machine after being reset 6 times in a row, and the standby machine switches to the minimum mode after being reset 6 times in a row. The present invention has been implemented and verified in actual projects, and can effectively solve various software and hardware failures.

A method and system are directed to protecting a hardware design against confidentiality and integrity attacks, the method comprising providing a bootable image (BI) to a tenant computing entity; receiving a certificate chain originating from the tenant computing entity via the BI; validating the certificate chain with a certificate authority; providing a design rule data object to the tenant computing entity via the BI; receiving an secure design rule result data object and an encrypted bitstream; determining a match of the secure design rule result data object with the design rule data object; and programming a cloud programmable logic instance with a decryption of the encrypted bitstream based at least in part on the match.

The invention discloses an Internet of Things industry intelligent customer service supervision and control system based on artificial intelligence, and belongs to the technical field of customer service supervision. Comprising an omni-channel intelligent access and intention understanding module, an AI intelligent center and complex decision module, an intelligent supervision and ethical regulation and control module, a man-machine cooperation and humanistic care module, a data-driven optimization and edge intelligent module and a security privacy and controllable treatment module, and the omni-channel intelligent access and intention understanding module is used for integrating multiple channels. Unified request distribution is achieved, data input by a user are analyzed through voice recognition, NLU natural language understanding and image recognition technologies, composite intentions are accurately captured, interaction strategies are dynamically adjusted in combination with device state data, user historical behaviors and real-time positions, and pacified talking skills or manual intervention are triggered through voiceprint / text emotion analysis. On the basis of realizing customer service supervision and regulation, all-channel fusion and intention accurate analysis can be realized, and ethical safety integrated design can be realized.

The invention relates to the technical field of hoisting equipment, and discloses material hoisting equipment for constructional engineering, the material hoisting equipment comprises two fixing frames, an outer support, a winch and a cage, the two fixing frames are symmetrically mounted on a building platform, the outer support is hinged to the fixing frames, and a first steel rope on the winch winds around the outer support to hoist the cage; after the winch lifts the lifting cage to the platform where the fixing frame is located through the first steel rope, the first steel rope pulls the outer support to rotate, so that the lifting cage is transferred to the platform, and through structural innovation and safety design, the operation problem of traditional lifting equipment in a space limited scene is effectively solved; the lifting cage is more suitable for material lifting operation after a main body structure of a low-rise building is completed, the lifting cage is vertically lifted to the height of the platform firstly through winding of the first steel rope, then the outer support is pulled to rotate, the lifting cage is stably transferred to the platform, and the construction efficiency and safety are improved.

The invention relates to an information-missing-oriented super-large-scale integrated circuit security design detection method, and belongs to the field of hardware Trojan horse detection. The method comprises the following steps: analyzing a gate-level netlist design file of the super-large-scale integrated circuit with missing information, creating directed graph representation, performing feature representation coding on logic gate nodes, and constructing circuit directed graph data; performing structural reasoning on the directed graph data by using a graph variation auto-encoder GraphVAE, complementing a circuit structure with information loss by using a decoder, and constructing complemented circuit directed graph data; performing logic gate type, fan-in and fan-out quantity, betweenness centrality and neighborhood type distribution calculation on the complemented data, and combining and splicing the complemented data into circuit gate characteristics; and constructing a graph neural network model GNN, further extracting deep-level features through graph convolution operation, and performing reasoning training by adopting a multi-layer perceptron to realize hardware Trojan classification. According to the method, the hardware Trojan of the gate-level netlist under the condition of information loss can be effectively detected.

The invention relates to the technical field of high-speed railway tunnel aerodynamics, in particular to a railway tunnel micro-pressure wave pneumatic analysis and evaluation management system which comprises the following steps: S1, speed verification: acquiring the current train speed; s2, track type judgment: obtaining the track type of the tunnel; s3, tunnel length judgment: obtaining the tunnel length; s4, micro-pressure wave evaluation: calculating a micro-pressure wave peak value, comparing the micro-pressure wave peak value with a control standard, and judging whether the micro-pressure wave peak value meets the standard or not; s5, mitigation measures: when the micro-pressure crest value exceeds the standard, adopting the mitigation measures, and updating the input parameters to perform modeling simulation and evaluation again; and S6, outputting a result: generating a report. According to the method, the automation level and the intelligent degree of tunnel pneumatic safety design are effectively improved, and the risk of environment and safety problems caused by micro-pressure waves is reduced.

The embodiment of the invention provides a chip system, a debugging method and electronic equipment, and is applied to the technical field of chip data security design. The chip system comprises a processor and a read-only memory. The processor includes a JTAG interface and a first data interface. The read-only memory comprises a second data interface. Wherein the processor is used for performing JTAG debugging based on the JTAG interface when a data reading path between the first data interface and the second data interface is in a closed state. And when the data reading path is in the open state, keeping the JTAG interface in the closed state. According to the embodiment of the invention, the JTAG interface and the data reading path are set to be mutually exclusive, so that the risk of reading important data in the read-only memory based on JTAG access is avoided.

The invention belongs to the technical field of electrical cabinet dehumidification, and discloses a dehumidification device applied to the interior of a switch cabinet, the dehumidification device comprises a shell, a fixing assembly, two adjusting assemblies, a condensation assembly, a control assembly and a water outlet assembly, the water outlet assembly comprises a collection box, guide pieces are fixedly installed on the two sides of the top of the collection box, and a three-way pipe is fixedly connected to the bottom of the collection box. By installing the water outlet assembly with a safe design, if a hose connected with the outside of the three-way pipe is blocked, liquid can be continuously accumulated and ascended from the blocked position in the three-way pipe until the liquid uniformly flows upwards into the water collecting shell and pushes the buoy to float upwards and abut against the rolling wheel, so that the rolling wheel transmits a displacement signal to the travel switch; and when the travel switch receives a travel signal, the operation of the semiconductor chilling plate is immediately stopped through the controller, so that the problem that the collected water drops flow back to influence the electrical safety due to the fact that water flow in a hose for water drainage is possibly accumulated and cannot be drained due to extrusion and blockage is solved.

The utility model discloses a power supply recovery preset switch, and relates to the field of electrical protection and safety design. Comprising an electrified coil, a contact column, a guide rail, a sliding block switch and a reset spring. And the electrified coil and the contact column are fixed on one side of the shell through fixing sheets. The guide rail is trapezoidal, and a trapezoidal thin plate is fixed at the upper end of the guide rail. The slide block switch is of a trapezoidal structure, one side is fixed with the reset spring, the other side is fixed with a small iron sheet and a contact, the center is provided with a coaxial cylinder, the upper end is connected with the switch, and the lower end is connected with a trapezoidal body. The two ends of the reset spring are fixed to the other side of the sliding block switch and the other side of the shell respectively. The utility model has the advantage that a user or equipment can select whether to recover the power supply of a certain electrical circuit or not when the power is returned after the power is cut off. Potential safety hazards possibly caused by sudden starting of equipment after power recovery are avoided.

This invention discloses a big data-based safety design management method for chemical projects, relating to the field of big data technology in chemical safety. The method includes: collecting multi-source heterogeneous data and preprocessing it to form a project baseline dataset; collecting design change data and performing differential comparison with a safety knowledge graph to identify differential objects; starting from the differential objects, performing dependency propagation analysis along the safety dependencies in the safety knowledge graph to output affected objects and risk propagation chains; determining the review order of affected objects based on the risk propagation chains, sequentially extracting the specifications to be reviewed that match the affected objects from the specification knowledge base, determining whether the affected objects meet the specifications to be reviewed, and outputting the specification review conclusion. This invention realizes dynamic and precise management and automated compliance review of chemical project safety design, shifting from experience-driven to big data-driven management.

The utility model discloses a height-adjustable bridge guardrail temporary support device, which comprises guardrail piers and adjusting mechanisms, the top ends of the guardrail piers are provided with fixing tables, the top ends of the fixing tables are provided with fixing rods, the adjusting mechanisms are arranged at the top ends of the fixing tables, each adjusting mechanism comprises an adjusting column, a locking rod and a lifting column, and the locking rods are arranged on the adjusting columns. The adjusting columns are arranged at the top end of the fixing table. According to the height-adjustable bridge guardrail temporary supporting device, through the arranged adjusting mechanism, when a bridge guardrail is temporarily supported, a lifting column in the adjusting mechanism can drive the guardrail installed at the top end to conduct height adjustment, and when the height is adjusted to the safe design height, the height of the guardrail can be adjusted; the height is locked by inserting the locking rod on the adjusting column into the hole of the lifting column, and then the distance between the protective fence and the protective fence pier is measured by using the measuring scale, so that a bridge ox horn protective fence support with a proper height can be conveniently selected subsequently.

This application provides a blockchain collective signature method, applied to a signature machine. The method includes: accepting a call from a browser plug-in to receive a first signature request, the first signature request including preset information; providing the preset information to multiple component holders for confirmation; obtaining multiple components from the multiple component holders, recovering a secret value based on the multiple components; deriving a blockchain private key based on the secret value; accepting a call from the browser plug-in again to receive a second signature request; and when the second signature request matches the preset information, signing the second signature request using the blockchain private key. The technical solution provided by this application can connect the signature machine and the browser plug-in. Through a two-call design, the browser plug-in adapts to the security design requirements of the signature machine, thereby achieving better integration between the signature machine and the browser plug-in.

The invention belongs to the field of embedded device security design, and particularly relates to a security starting system and method based on dynamic environment binding and heterogeneous inspection. A safe starting framework is constructed through a triaxial accelerometer, a main control chip and a verification module, wherein the main control chip integrates an annular oscillator array, a temperature sensor and a hardware hash engine, and the verification module comprises an AI coprocessor and a block chain communication module. The system firstly collects three-dimensional acceleration and environment temperature data, combines dynamic physical signals generated by an annular oscillator array, and generates a dynamic decryption key through fusion of a hardware hash engine; and then heterogeneous dual-channel verification is formed through the AI coprocessor and the block chain communication module, so that the key validity is ensured. According to the method, a static key is replaced by a dynamic trust root, the bottleneck of a single chain is broken through heterogeneous verification, protection is enhanced through environmental data binding, security and light weight are considered, a real-time industrial control scene with limited adaptive resources is adapted, and attacks such as physical detection and environmental simulation are effectively resisted.

The invention discloses a lithium ion battery cluster fire spreading test method with good safety performance. The method comprises the following steps: S1, building a test model, building a cabin body, and installing a pressure release valve on the cabin body; three clusters of battery packs are arranged in the cabin body, each cluster comprises eight battery packs, the middle cluster is a solid pack, the second pack counted from bottom to top is a heating experiment pack, the left side and the right side of the heating experiment pack are solid battery packs, and the other two clusters are non-solid empty packs. The test process can be accurately controlled, and the accident risk is reduced; sufficient data support is provided for fire behavior analysis; the industrial research and engineering application requirements are met; the analysis result can directly guide battery cluster safety design and fire extinguishing system optimization, and the application prospect is wide.

The application belongs to the technical field of high-security RFID, and discloses a high-security RFID system, method and application of wireless radio frequency identification, which comprises an active high-security RFID system of wireless radio frequency identification and a passive high-security RFID system of wireless radio frequency identification.For the active system, the background only stores the root key and ID of the tag and the root key index.The root key index corresponding to each ID is not stored in the background, is randomly generated when the tag is written for the first time, and is written into the tag, so that the tag can be prevented from being activated by an illegal exciter, and the existing wireless network architecture design can be maintained.For the passive system, the background only stores the root key and ID of the tag and the root key index.TLS security identification: the reader and the background are authenticated by using TLS, and data is encrypted by using SM4, so that the security and reliability of the equipment are guaranteed;the existing passive system security design is improved, and the tag can be prevented from being activated by an illegal exciter.

The application discloses a kind of chip function safety design automation verification method, device, equipment and medium, it is related to chip design technical field, the method includes reading wrong insertion simulation requirement table to obtain simulation test case and running, the incentive needed for producing FIT simulation, and based on simulation test case running situation, abnormal simulation test case is eliminated;FIT simulation environment file is detected, and the generation of FIT simulation verification environment, the formulation of FIT simulation process and the required incentive according to FIT simulation type are matched;FIT simulation is executed, FIT simulation result report is generated based on FIT simulation result or FIT simulation process is adjusted to execute FIT simulation again.The present application can effectively reduce artificial workload, improve work efficiency, avoid error occurrence by formulating standardized, quantifiable, statistical, efficient positioning wrong insertion simulation process.

The application relates to a driver monitoring system optimization method and system based on expected function safety. The method comprises the following steps: selecting a driver monitoring system to be tested; constructing a simulation driving scene; a driver performs visual subtasks and auditory subtasks in the simulation driving scene and is monitored by the driver monitoring system; based on the expected function safety theory, a test index of the driver monitoring system is constructed, the test index comprising exposure, severity and controllability; based on the Bayesian theory, the exposure index is quantified; through analysis of a hazard event of the driver monitoring system, the severity index is quantified; based on the driver cognition theory, the controllability index is quantified; the safety level of the driver monitoring system is given in combination with the exposure, the severity and the controllability, and the system is optimized. Compared with the prior art, the application can cope with risks caused by potential hazard behaviors in non-failure conditions, and provides a reference for function development and safety design of the driver monitoring system.

The application provides a bearing pressing plate gap optimization method and device, a storage medium and an electronic device, and the method comprises the following steps: a dynamics model of a transmission system where a bearing pressing plate is located is constructed; a simulation model of a connecting system where the bearing pressing plate is located is constructed based on the dynamics model, wherein the connecting system comprises the bearing pressing plate, a bearing and a middle connecting plate; the minimum safe design gap and the maximum safe design gap between the bearing pressing plate and the middle connecting plate are simulated and calculated respectively by using the simulation model, and the interval range between the minimum safe design gap and the maximum safe design gap is output as the optimal design gap between the bearing pressing plate and the middle connecting plate. Through the embodiment, the technical problem of low efficiency of the gap design of the bearing pressing plate in the prior art is solved, the development and design efficiency of the bearing pressing plate in the new transmission system is improved, and the development cost and period are reduced.

The invention discloses a meter installation and power connection simulation practical training device and a use method thereof, and relates to the technical field of electric power skill training, a highly integrated modular architecture is adopted, and an installation module, a verification module, a protection module, a wrong wiring check module, an instrument and meter adaptation module and a power supply module are integrated on an operation screen. The assembling module constructs a wiring environment through a standardized wiring terminal, a circuit model and an electric energy meter assembly; the protection module integrates electric leakage, overcurrent and short circuit protection units and corresponding state indication lamps to form a multiple safety protection system. And the false wiring checking module realizes flexible simulation of various typical false wiring scenes through a mechanical change-over switch. According to the invention, through deep combination of modular integration and mobile safety design, on the premise that the practical training process is safe and reliable, the technical problems of single function, limited field and insufficient safety guarantee of traditional training equipment are effectively solved, and comprehensive skill practical training in various scenes is realized.

The invention discloses an impact force analysis method and device for a sling lifting net blocking system and a storage medium. The method comprises the following steps: acquiring physical parameters of each component of the blocking system, constructing a dynamic model of each component based on the physical parameters, and determining a total mass matrix and total generalized elastic force of the system based on the dynamic models of the multiple components; a position constraint equation is established according to the connection relation of all the components, and a kinetic equation of the blocking system is established based on the position constraint equation, the total mass matrix of the system and the total generalized elastic force; determining generalized contact force of a contact area of the wire and the horizontal axis pulley, and solving the kinetic equation based on a generalized method to obtain mechanical response data of the blocking system; and determining the impact force of the blocking system according to the mechanical response data. A reliable basis is provided for impact resistance evaluation and safety design of the system, and the safety and reliability of the network blocking system in extra-high voltage construction are improved.

To provide an environment in which a user can easily confirm information on safety design.SOLUTION: The support device includes a first generator, a second generator, and a manager. The first generator generates, for each of one or more hazard sources included in the target device, first information including an execution result of risk assessment based on an input to a first user interface including a question group according to the risk assessment. The second generator generates, for each of the one or more hazard sources, second information indicating a device configuration and wiring of the safety-related section based on an input to a second user interface for supporting concretization of a risk reduction measure. The management unit manages the first information and the second information in association with each other for each of the one or more hazard sources.SELECTED DRAWING: Figure 1

The invention discloses a fault safety design method for an MEMS (Micro Electro Mechanical System) safety device. A recoil safety device is arranged as the first safety of the MEMS safety device; a recoil fail-safe design lock hook is arranged at the side end, close to the explosive-proof sliding block, of the recoil safety device, can be matched with an explosive-proof sliding block fail-safe design lock hook arranged at the side end of the explosive-proof sliding block and is used for limiting the motion freedom degree of the explosive-proof sliding block in the working direction and the motion freedom degree of the explosive-proof sliding block in the direction perpendicular to the working direction. And the locking mechanism can move to an unlocking position to be locked with the base plate under the action of recoil force. According to the invention, strict sequential control of isolation removal of the MEMS safety device is realized, and the safety of the fuze MEMS and the safety of the isolation removal device are guaranteed.

A support apparatus inputs static data of facilities and dynamic data of the facilities to a control device. The support apparatus includes a display device as an output device. The control device displays a transient contact risk area image and / or a quasi-static contact risk area image on an image of the facilities in an evaluation target space. If the transient contact risk area image is displayed, an evaluator intuitively understands an existence of the transient contact and a location of the transient contact. If the quasi-static contact risk area image is displayed, the evaluator intuitively understands an existence of the quasi-static contact and a location of the quasi-static contact. As a result, the evaluator can consider measures against the transient contact and / or the quasi-static contact.

The invention discloses an uncovering encryption method, device and system supporting a general data type, and the method comprises the steps: firstly, innovatively providing a novel ORE algorithm which supports the general data type and can reduce the length of a ciphertext through expanding an EncodeORE algorithm; generating a key for encrypting the cloud database based on the algorithm; the algorithm is used for encrypting various types of data plaintexts such as numerical values, characters and the like, and effective comparison between ciphertexts can be realized; and a sequence uncovering encryption system is constructed, and finally, the cloud database directly searches and calculates ciphertext data at the cloud end. Compared with an existing trusted execution environment (TEE) and a traditional searchable encryption scheme, the method not only can encrypt and compare various types of data, but also reduces the storage cost, effectively solves the problems of high hardware attack risk, low calculation efficiency, multiple security holes, serious performance defects and the like, and is suitable for large-scale popularization and application. The better security design is realized while the good performance is maintained, and the security and performance advantages are outstanding when a large-scale data set is processed.

The utility model discloses a mark pen which comprises a shell, a pen core, a first pen point, a first pen cap, a clamping groove, a fixing base, a buckle, a tool bit, a second pen point, a plug, a clamping block, a reinforcing rib, a vent hole, a second pen cap, second anti-skid lines, a convex ring, a groove and a pen clip. The tool bit fixing base structure is designed, the special tool bit is stably locked on the mark pen cap, original basic functions of writing, marking and the like of the mark pen are reserved, the application field of the mark pen is ingeniously expanded, and when a common express box opening scene in daily life is dealt with, a user only needs to slightly operate the mark pen, so that the mark pen is convenient to use. The adhesive tape can be easily dismantled through the tool bit, comprehensive coverage of functions and remarkable improvement of practicability are achieved, the safety design concept is adopted for the tool bit, it is guaranteed that the edge of the tool bit is smooth and not sharp, and therefore the risk of accidental scratching is greatly reduced while it is guaranteed that the adhesive tape is efficiently cut, and more secure and convenient use experience is brought to a user.

The invention discloses an automatic verification method and device for chip function safety design, equipment and a medium, and relates to the technical field of chip design, the method comprises the following steps: reading a misplugging simulation demand table to obtain a simulation test case, running the simulation test case, generating excitation required by FIT simulation, and eliminating an abnormal simulation test case based on the running condition of the simulation test case; detecting an FIT simulation environment file, generating an FIT simulation verification environment, formulating an FIT simulation process and matching required excitation according to an FIT simulation type; fIT simulation is executed, and an FIT simulation result report is generated based on an FIT simulation result or the FIT simulation process is adjusted to execute FIT simulation again. According to the method and the device, the standard, quantifiable, statistical and efficient positioning error insertion simulation process is formulated, so that the manual workload can be effectively reduced, the working efficiency is improved, and errors are avoided.

This application relates to the field of low beam headlight control system technology, and more particularly to a hardwired controller for a headlight controller, comprising: a communicator connected between a higher-level domain controller and the headlight controller; a monitor connected to the higher-level domain controller; and a protection module connected between the communicator and the monitor. The monitor has a PG pin and an RST pin, the communicator has an LH pin, and the protection module has an RST pin. The PG and RST pins of the monitor and the LH pin of the communicator are all connected to the RST pin of the protection module. This application adopts a top-level design from the system architecture level in existing safety designs, adding a PG pin to the LDO. When the LDO output is abnormal, no logic processing by the MCU is required, and the SEPIC chip can enter limp mode.

The embodiment of the invention provides a method for enhancing the security of a time information message, and the method is applied to a first time synchronization node, and comprises the steps: receiving a first time information TOD message, and obtaining preset authentication information and integrity verification; adding the authentication information and the integrity verification information into the first TOD message to generate a second TOD message; and sending the second TOD message to the second time synchronization node, thereby solving the problems that the design of the TOD message in the network is relatively early, no related security design and consideration exist, the time synchronization node for transmitting the TOD message is easy to counterfeit, the overall security risk is relatively high and the like in the related technology, protecting the integrity of clock message transmission, and improving the security of the time synchronization node. The time information is prevented from being tampered in the message transmission process, and the security of message transmission between the first time synchronization node and the second time synchronization node is enhanced.