259results about How to "Security impact" patented technology

The invention discloses a polarization compensation implementation method of a continuous variable quantum key distribution system. The polarization compensation implementation method comprises the following detailed steps that: a transmitting end transmits signal light and local oscillator light through one optical fiber by adopting a polarization multiplexing manner, and a receiving end separates the signal light and the local oscillator light by a polarization beam splitter, wherein a polarization feedback control method is divided into two stages, to be specific, in the light splitting detection stage, the receiving end for distribution of continuous variable quantum keys separate a part of local oscillator light out and covers the local oscillator light into a DC feedback voltage signal through a conversion circuit; and in the polarization correction stage, the receiving end controls a dynamic polarization controller by a feedback algorithm according to the DC feedback voltage to finish polarization correction. The brand-new polarization feedback control implementation method of the continuous variable quantum key distribution system, provided by the invention, has the advantages of effectively preventing the polarization state of continuous variable quantum signals from being subjected to environment interference in the optical fiber communication process, improving the system stability and promoting the practicability of the continuous variable quantum keys.

The invention provides a radio frequency chip, a consumable material container, a data writing method and a verifying method. The radio frequency chip comprises a base plate, wherein the base plate is provided with an antenna and a memorizer connected with the antenna; the memorizer memorizes serial number data of the radio frequency chip and the consumable material-correlated data; the memorizer is provided with a password verifying and memorizing region; and the password verifying and memorizing region memorizes a first password verifying value which is computed by taking the serial number data and the consumable material-correlated data as parameters. The data writing method of the radio frequency chip comprises the following steps of: reading the serial number data of the radio frequency chip; writing the consumable material-correlated data into the memorizer; computing to obtain the first password verifying value though a first encrypting function by taking the read serial number data and the written consumable material-correlated data as the parameters; and writing the first password verifying value into the password verifying and memorizing region. The invention is convenient for a printer to identify the consumable material container, and improves the whole safety of the consumable material container.

The invention discloses a phase compensation method of a quantum key distribution system. The phase compensation method comprises the step A of phase estimation, wherein the angle of phase drift is calculated through a cross-correlation solving mode, and the step B of phase compensation, wherein phase compensation is carried out on data according to the estimated phase drift value. In the method, only simple mathematical statistics needs to be carried out on the received data in the phase estimation step, and calculation is easy and convenient. The phase compensation step is carried out at a sending send, a receiving end only needs to send the phase shift value back to the sending end in the whole compensation process, and security of the data cannot be influenced. Phase compensation based on data levels instead of traditional hardware compensation based on signals is adopted, and a few software functions and communication interfaces can be added to a platform of a traditional quantum key distribution system to achieve the method.

The invention provides a verifying method and system for an intelligent secret key. The method comprises the following steps of sending a secret key material acquiring command to an intelligent secret key and receiving the secret key material returned by the intelligent secret key; adopting a plant public key to verify a first digital signature, and obtaining a random number by analyzing the secret key material when the verifying is passed; adopting a user private key to sign the random number to obtain a second digital signature, generating verifying information according to the random number and the second digital signature and sending the verifying information to the intelligent secret key; receiving the verifying answering information returned by the intelligent secret key. The verifying method and system for the intelligent secret key realize bidirectional authentication, and the safety of the intelligent secret key is effectively improved; as the bidirectional authentication is realized, the possibility of volume series in the transmission process of the intelligent secret key is greatly reduced.

The invention discloses a network data storage method and a server. The disturbing network data storage method provided by the invention comprises the following steps: judging whether a data file needs to be encrypted and/or signed or not by the server according to configuration information of the storage region of the data file; encrypting a network data stream uploaded at a client when the data file needs to be encrypted but does not need to be signed according to the judgment, and writing the encrypted data stream into the data file; writing the network data stream uploaded at the client into the data file when the data file needs to be signed but does not need to be encrypted according to the judgment, and signing the data file; and encrypting the network data stream uploaded at the client when the data file needs to be encrypted and signed according to the judgment, writing the encrypted network data stream into the data file, and signing the data file. The invention improves the openness, the expansibility, the robustness and the reading/writing visit efficiency of the network storage server on the premise of ensuring the confidentiality and the completeness of the data storage.

The invention discloses a method for encrypting and decrypting audio and video data to be transmitted. In the process of encapsulating the audio and video data to be transmitted into a transport stream (TS), all or part of the audio and video data at different stages and related information is encrypted for multiple times, and then the finally encrypted TS is transmitted; and correspondingly, when an opposite terminal receives the encrypted TS, all or part of the encrypted TS is decrypted at different stages for multiple times. Therefore, the impact on the security, of the audio and video data to be transmitted, of a set of encryption algorithms can be avoided, and the cost cannot be increased.

The invention discloses a multi-CPU framework-supporting application software development and operation service system. The system is divided into an operation system state, an operation state, a development state, an application state and a distribution state from bottom to top; and the system mainly comprises three parts: a multi-framework application software development and operation core framework runtime, a multi-framework application software development and operation core framework development tool and a multi-framework application software operation sandbox. The system disclosed in the invention has the advantages of standardizing the industrial standard of application software development and operation and enabling the application software packages to satisfy the application authority control requirement on the basis of the standard.

The invention discloses a key updating method and system for a sensor node. The method comprises the following steps of: sending a key updating request to a management platform by the sensor node; authenticating the identification of the sensor node by the management platform, randomly generating an Ni-bit updating key for the sensor node after the authentication passes, encrypting the updating key, and sending ciphertext information obtained by encryption to the sensor node; and deciphering the ciphertext information by the sensor node to obtain the updating key, and updating an old key by using the updating key. According to the key updating method disclosed by the invention, the updating time is shortened, the node energy consumption and the communication overhead are reduced, and the network operation efficiency is improved.

The invention discloses a remote monitoring maintenance method for GYK equipment. According to the method, operation data of the GYK equipment is received by a vehicle terminal in real time and is synchronously transmitted to a ground server in a remote mode, the operation data of the GYK equipment is received by the ground server and is synchronously analyzed, the ground server is registered by a user through a webpage browser or a desktop client to check a track car operation status, GYK equipment quality and GYK reveal data and GYK basic data version information, a maintenance scheme is timely made, and remote monitoring maintenance of the GYK equipment is realized. Through the method, safety requirements of the GYK taken as important safety equipment of a track car is fully considered, a safe one-way transmission communication mode of the GYK and the vehicle terminal is particularly designed, so application of a remote monitoring maintenance system of the GYK equipment has no influence on safety of the track car.

The invention discloses a cooling system for a power station boiler high-temperature wall infrared detection device. The cooling system is formed by a long-tube-shape endoscopic lens, an infrared CCD camera, a cooling system, a support and a slide device. The lens is supported to the inner wall of an inner sleeve of a wind clamp pipe through a fixation ring; the fixation ring is circumferentially provided with a loop of vent holes; the outer wall of an outer sleeve of the wind clamp pipe is connected to a guide rail of the support through the slide device; the lens can move along the axial direction of the lens with the wind clamp pipe; the back end of the lens is connected with the outer wall of the inner sleeve of the wind clamp pipe through an adjustment flange; the lens can adjust image direction and vision field angle through the adjustment flange; the infrared CCD camera is externally sleeved by an air-cooling housing; the front edge of the support is provided with an annular wind groove; the wind clamp pipe, the air-cooling housing and the annular wind groove are respectively provided with an air inlet of cooled compressed air; and the cooled compressed air flows into a furnace through the wind clamp pipe and forms a protection air film to prevent the heat of high-temperature smoke gas in the furnace from entering the lens, and reduce pollution effect of flying ashes in the smoke gas on the lens, and thus cooling and protection of the endoscopic lens are realized.

The invention provides an ecological type BOPP/PP color printing food packaging film, which comprises an upper layer, a middle layer and a lower layer, wherein the middle layer is covered on the lower layer; the upper layer is covered on the middle layer; the upper layer is a PP laminated film layer; the middle layer is a color printing film layer; and the lower layer is a BOPP layer. The invention also provides a method for manufacturing the ecological type BOPP/PP color printing food packaging film. The invention provides the ecological type BOPP/PP color printing food packaging film capable of enhancing the environmental protection property and effectively eliminating hidden troubles to the food safety, and the method for manufacturing the ecological type BOPP/PP color printing food packaging film.

The application discloses a method for creating a vTPM (Virtual Trusted Platform Module). The method comprises the steps of: when receiving an instruction of creating the vTPM, acquiring configurationparameters of the vTPM, wherein the configuration parameters comprise an access interface parameter, a rear end driving parameter and a storage space parameter; then arranging a memory in a virtual machine for the vTPM and according to the access interface parameter, arranging an access interface of the virtual machine and the vTPM; according to the rear end driving parameter, arranging a rear end driver of the vTPM; and then according to the storage space parameter, setting a storage space of the vTPM and setting a storage mechanism of the storage space. By creating the vTPM in the virtual machine according to the configuration parameters, setting functions of the vTPM and providing a trusted root for the virtual machine, monitoring and operation on creation and application of the vTPM of the virtual machine by a host machine are avoided, and safety of the virtual machine is improved. The application further discloses a device and equipment for creating the vTPM and a computer readable storage medium which all have the above-mentioned beneficial effects.

The invention discloses an adjustable midwifery bed for the obstetrical department. The adjustable midwifery bed comprises universal wheels, a middle plate and a bed body rotating shaft; the upper portions of the universal wheels are connected with a back plate, an accompanying bed is mounted at the center of the inner side of the middle plate, supporting column rotating shafts are arranged at thebottom end of the middle plate, a backup plate is connected to the left side of the bed body rotating shaft, and a bottom plate is attached to the right side of a bottom layer plate; a middle plate slideway is arranged on the right side of the accompanying bed, a positioning groove is formed in the lower portion of the left side of the middle plate slideway, a lower supporting rod is arranged onthe outer side of a connecting rotating shaft, and an upper supporting rod is mounted on the inner side of a supporting rod sliding groove. According to the adjustable midwifery bed for the obstetrical department, by arranging the middle plate, a hydraulic rod, springs and a top layer plate, the height of the midwifery bed can be adjusted, the midwifery bed can be adjusted to the different heightsaccording to health care personnel with different heights, and the problem that a patient on the midwifery bed is not cared conveniently by the health care personnel with the height having the largedifference with the height of the midwifery bed is solved.

The invention relates to a dormancy-breaking agent of an European large cherry cultivated out-door in the region at the south of the Changjiang River, and a dormancy-breaking method thereof, which are used for carrying out dormancy-breaking to the European large cherry and promoting the growth of an ovule and a megaspore. The dormancy-breaking agent is prepared by diluting a cyanamide solution of 50 percent to 1-2 percent and then being added with osmotic agent fatty alcohol polyethenoxy ether of 0.05 percent. The European large cherry is treated for two times. The first treatment is carried out about 30 days before the sprouting of the European large cherry and the whole branch of the European large cherry is sprayed up by using the dormancy-breaking agent; the second treatment is carried out after one week of the first treatment, and the same dormancy-breaking method is treated repeatly for consolidating the effects. The method is applicable to the large cherry varieties of 'early-red precious stone', 'red light', 'early-mahapphala', 'pioneer', 'Lapins' and the like. The dormancy-breaking agent has easy preparation and safe use, and can lead the European large cherry to sprout in advance for more than one week, with neat sprout and blossom, the flower quantity is increased, the percentage of fertile fruit is improved, the growth of the young sprout is promoted, the leaf area is increased and the fruit quality is enhanced.

Disclosed in the invention is a brushless direct-current motor simulator. A winding subsystem simulator simulates a winding resistor, an inducer and a back electromotive force; an electromagnetic subsystem simulator simulates an electromagnetic moment of a brushless direct-current motor; a load characteristic simulator simulates a load moment; a mechanical subsystem simulator simulates a mechanical characteristic of the brushless direct-current motor; a magnetic flux density simulator simulates a distribution characteristic of the magnetic flux density of the rotor of the brushless direct-current motor; a back electromotive force subsystem simulator simulates back electromotive forces of three-phase windings of the brushless direct-current motor; and a position sensor simulator simulates an output signal of a switch hall sensor. According to the invention, the electronic load of the brushless direct-current motor body can be replaced; and the brushless direct-current motor simulator has the real electrical and mechanical characteristics of the brushless direct-current motor; important parameters like a driving voltage, a driving current, a back electromotive force and an electromagnetic moment and the like can be monitored; information including commutation errors and current abnormality and the like can be recorded; and the simulator has the fault self-diagnosis capability and the processing capability.

The invention discloses an automobile lane changing trajectory planning and dynamic trajectory tracking control method. The method comprises the following steps of S1, planning a lane changing trajectory under the condition of a straight road or a curved road; and S2, designing a dynamic trajectory tracking controller to track a reference trajectory, and constructing a reference trajectory gravitation function and an obstacle vehicle repulsive force function to avoid dynamic obstacles. According to the method, firstly, a lane changing reference trajectory planning method on a structured road is provided, and lane changing reference trajectory planning under the condition of a straight road or a curved road is carried out based on a quintic polynomial; secondly, the collision avoidance problem of a vehicle under the condition that the state of a front vehicle changes in the lane changing process is considered, the avoidance of a front obstacle vehicle is considered in the tracking process of a lane changing reference trajectory, and an anti-collision trajectory tracking controller is designed based on a model prediction algorithm; and a lane changing reference trajectory gravitational function and an obstacle vehicle repulsive force function are respectively designed as optimization functions of model prediction, and optimal control parameters are obtained through an optimization algorithm, so a purpose of collision-free trajectory tracking is achieved.

The invention discloses a synthesis method of panobinostat. The synthesis method comprises a step of synthesizing 2-methyl tryptamine or hydrochloride thereof, namely taking 2-methylindole as a raw material, conducting reaction with chloroacetyl chloride or bromoacetyl bromide, and conducting reaction with potassium phthalimide to obtain the 2-methyl tryptamine. According to the technical scheme adopted by the invention, influence of toxic raw materials on the safety of a panobinostat product is avoided; meanwhile, the invention provides the synthesis method applicable to industrial production.

The invention discloses an insulation box. The insulation box comprises a box body and a box cover matched with the box body. The box body comprises a cavity used for containing articles. The cavity comprises a pair of parallel first side faces, a pair of parallel second side faces perpendicular to the first side faces, and a bottom surface. Embedding grooves formed by concave and convex planes are correspondingly formed in the first side faces in pair, extend from top to bottom and are used for clamping lateral ice boxes. According to the insulation box, the structure used for fixedly installing refrigerants (the ice boxes) is arranged in the insulation box, the space of the box body is saved by arranging the refrigerants reasonably, and meanwhile the effect that the temperature in the insulation box is stable and uniform is guaranteed under the condition that the effect that the safety of a product stored in the insulation box is not affected by the refrigerants is guaranteed; and the insulation box is made of foamed polypropylene so that the box body can be recycled conveniently and can be recovered to be remanufactured under the condition that the box body is scrapped, and recycling and environmental friendliness are achieved.

The invention discloses a safety switching method of a high-speed train target base station based on relay station auxiliary. The method comprises the following steps: (1) selecting a to-be-accessed target base station; (2) interacting switching preparation message by a relay station and the target base station through the current base station before entering the coverage range of the target basestation, accomplishing the new address configuration by the relay station and the current base station, thereby accomplishing the bidirectional authentication and the session key negotiation with thetarget base station; and (3) after entering the coverage range of the target base station, accomplishing the location registration of the relay station and the connected user equipment, and executingthe link layer switching to activate the new connection. Through the base station switching method disclosed by the invention, the forward security can be satisfied, the node forgery attack can be effectively prevented, the denial of service attack is prevented, the replaying attack is resisted, the computing efficiency is high, and the good safety protection is adopted for the confidentiality andthe integrity of the signaling message.

The invention provides a method and a system for assembling a confidence machine. The problem that functions of a computer are not fully achieved so that resources of the computer are wasted because of the arranged confidence machine is solved. The system comprises a server and a plurality of terminals. Each terminal comprises a generating module. The terminal which is provided with a confidence virtual machine further comprises an adding module. The server comprises a receiving module and a testing module which obtains terminal information from a control collection in a random mode and tests whether virtual machine information exists in the terminal information, if the virtual machine information exists in the terminal information, an assembling module is triggered, and if the virtual machine information does not exist in the terminal information, the testing module is reused to obtain terminal information from the control collection again to proceed with test operation. The server further comprises the assembling module. The virtual machine information comprises virtual machine identification which is unique identification of virtual hardware in the confidence virtual machine.

The invention provides a machine core of an electric pencil sharpening machine, and belongs to the technical field of machinery. The problems that existing electric pencil sharpening machines are low in safety and prone to being mistakenly started when machine covers are taken down are solved. The machine core comprises a shell with the upper end open, a pencil holding frame arranged in the shell, a sharpening assembly located on one side of the pencil holding frame and a motor capable of controlling the sharpening assembly to work. The upper end of the shell is connected with a protection cover, a mounting cavity is formed in the protection cover, and a pencil inserting hole communicating with the mounting cavity is formed in the bottom of the protection cover. The pencil inserting hole right faces the pencil holding frame. A first microswitch is arranged in the position, close to the pencil inserting hole, in the mounting cavity, and the first microswitch can be triggered when a pencil is inserted into the pencil inserting hole. A protection hole and a connecting hole right facing the pencil inserting hole are formed in the upper end of the protection cover in a penetrating mode. A second microswitch is further fixed in the mounting cavity, and a trigger part of the second microswitch is opposite to the lower port of the protection hole. The machine core of the electric pencil sharpening machine has the advantages of being high in safety, capable of effectively preventing mistaken start, and the like.

The invention discloses an intelligent management method for a numerical control machine tool. The intelligent management method for the numerical control machine tool comprises the steps: obtaining target operation authority verification information of an operator, and carrying out the verification of the target operation authority verification information and verification information stored in adatabase in advance; obtaining a target production processing batch number, a scanned target processing machine tool number, a target tool number and a target cutter number inputted by the operator and comparing the target production processing batch number, the scanned target processing machine tool number, the scanned target tool number and the scanned target cutter number with production equipment processing number corresponding to the production processing batch number pre-stored in a database; acquiring accumulated machining time of the production equipment, and judging whether the estimated life machining time minus the accumulated machining time is greater than target machining time or not; if yes, the machining starting time is recorded, and timing statistics is conducted; obtaining timing statistical time and target processing time for verification; and if not, outputting production equipment maintenance and replacement information to the terminal. Intelligent management is realized, misoperation of personnel and machines is prevented and safety is improved.