39results about How to "The transmission process is safe and reliable" patented technology

A matrix converter may be provided with AC switches that comprise bi-directional sets of semiconductor switches that are gated with a common gating link. A low loss diode-bridge based snubber may facilitate introduction of time delay between sequential operations of the bi-directional set of semiconductor switches. The matrix converter may be operated in a three-phase mode with only one gating signals for each AC switch, in contrast to prior-art matrix converters which may require use multiple gating signals for each AC switch.

The invention provides asafety control method, a device and a computer equipment, wherein the method comprises: obtaining a key generated according to ECU identity information of a vehicle control unit ECU to be authenticated and gateway identity information of a vehicle gateway, and generating check information corresponding to the ECU identity information;a key is used to encrypt the verification information to generate the first authentication information;receiving second authentication information generated based on the first authentication information transmitted by the ECU;the second authentication information is decrypted by using a key to obtain the carried check information and the ECU identity information;by judging whether the decrypted check information and the ECU identity information have a corresponding relationship, the ECU is verified securely. The gateway verifies each ECU securely with different verifying information and encrypts with different keys when transmittingthe verifying information, which makes the transmission process more secure, realizes the ECU security verification and ensures the communication security.

The invention discloses an authentication method of verification code security reinforcement. The method comprises the following steps: after a server receives a verification code acquisition request sent by a user, the server releases a short message verification code to the user; a client encrypts the short message verification code obtained by the user by using a pre-stored algorithm to generate short message ciphertext; the client obtains verification times and adds the present verification to obtain a verification counting value; the client sends a verification file composed of user information, the verification counting value and the short message ciphertext to the server; and the server receives and verifies the verification file. In addition, the invention further provides an authentication system of verification code security reinforcement. The system comprises a server and a client connected with the server, the client comprises a first information transceiver module, an encryption plug-in, a statistical module and a control module, and the control module is separately connected with the first information transceiver module, the encryption plug-in and the statistical module. By adoption of the authentication method and system disclosed by the invention, the authentication security of the verification code is greatly improved without affecting the user experience, and the user experience is improved.

The invention discloses a method for updating data of a database in batch mode based on communication protocols, which includes the following steps: step S1, security socket layer (SSL) connection is built between a client and a server; step S2, the client is communicated with the database server in interactive mode to complete batch updating of the data; and step S3, the SSL connection between the client and the database server is broken. In the step S2, a PreparedStatement object is stated through preprocessing of structured query language (SQL) statement and used for enabling the generated SQL statement to be preserved in the server in the process of execution of the SQL statement at the first time, and then sends required data to the SQL statement continually. The method adopts a once-transmission batch updating mode to all data, and facilitates pressure remission of the database server caused by batch updating of the data at the client.

The invention discloses a quantum communication service station key negotiation system and method based on secret sharing and timestamps. The system comprises a client A, a client B and a quantum communication service station, the clients and the quantum communication service stations use the secret key cards to store public keys and private keys, the quantum communication service stations and thequantum secret key cards carry out secret sharing on the clients, only current components stored in the secret key cards are hidden in a false mode, and safety is greatly improved. According to the method, the offset is used at the same time, so that the transmission process is safer, the characteristic of quantum computing resistance is achieved, the calculated amount of the encryption mode is smaller than that of a common encryption mode, therefore, the situation that the common encryption mode is used for resisting attacks of a quantum computer is avoided, and the equipment burden of all parties is reduced.

The invention relates to an intelligent robot inspection system for a transformer substation, and an access operation method thereof. The system comprises a terminal security reinforcement unit, a security authentication transmission proxy server and a security authentication encryption platform, wherein the terminal security reinforcement unit is installed on an inspection robot industrial personal computer; the security authentication transmission proxy server is deployed between an AP in an intelligent substation and a main control room router, and the security authentication encryption platform is deployed in an information intranet. By installing the terminal security reinforcing unit in the industrial personal computer of the inspection robot, security certification access of the inspection robot and security protection of data are realized. The security capability provided by the terminal security reinforcement unit comprises digital certificate application, data encryption anddecryption, secret key storage protection and terminal state monitoring, encryption and decryption of data streams can be flexibly configured according to needs, and the security of the substation intelligent robot inspection system is improved.

The invention discloses an anti-quantum computing Internet of Vehicles system based on secret sharing and a mobile terminal and an authentication method thereof. The system comprises a plurality of mobile terminals, a third-party trust mechanism, vehicle keys, vehicle-mounted units and roadside units. The vehicle keys and the vehicle-mounted units are arranged on a plurality of vehicles. The roadside units are used for transmitting messages of the vehicle-mounted units and the third-party trust mechanism. The mobile terminals and the vehicle-mounted units are paired in a one-to-one mode, and the vehicle-mounted units authenticate the mobile terminals. By arranging the mobile terminal, the safety of the vehicle-mounted unit to the driver authentication process is enhanced in the authentication of the vehicle-mounted unit to the mobile terminal. A signature based on ID cryptography is adopted for a transmitted message, an ID is changed into a form of a public key random number, secret sharing is adopted, and a secret is added into the signature message, so that an actual signature message cannot be obtained by an enemy, and a digital signature has very high quantum-resistant computing security. The offset is used, so that the transmission process is safer, and meanwhile, the equipment burden is reduced.

The invention discloses a distribution automation information encryption method based on quantum reinforcement, and the method comprises the steps: presetting a key pool A in a master station and all terminals, independently setting a key pool B in the master station, pre-storing a key in the key pool A, pre-storing or storing a newly added key in the key pool B, and storing the newly added key in the key pool B, wherein the keys are quantum keys converted after quantum random numbers are generated by a quantum random number generator; distributing key packets: the terminals communicate with the master station, the terminals and the master station jointly select a key a from the key pool A, the master station extracts part of keys from the key pool B to form a key packet, and the key packet is encrypted by using the key a and sent to all the terminals; the terminal decrypting the received key packet by using the key a, extracting the key in the key packet for performing secondary encryption and decryption on the state grid encrypted message, and marking the key in the key packet after being used; and after all the keys of the key packet in the terminal are marked, a key a being selected from the key pool A again, and key packet distribution being performed again.

The invention discloses a quantum secret communication system and method based on secret sharing and asymmetric cryptography. The method is used for secret communication between user sides through QKDequipment. The QKD device generates a secret key based on the QKD or the true random number generator, secret sharing of the generated secret key between the QKD device and the QKD slave device is achieved through a symmetric secret key pool between the QKD device and the QKD slave device, and offset calculation is introduced in the communication process for encryption. According to the method, secret sharing is carried out on the QKD symmetric key pool, so that the possibility that the key is stolen is greatly reduced, and the safety of the QKD key is effectively improved. A single QKD device is provided with a plurality of slave devices, so that the capacity of the QKD device for providing key service and the system stability are improved. The offset is used for encrypting the data, andother parties cannot crack the data protected by the offset, so that the method has the characteristic of quantum computing resistance.

The invention provides a rechargeable card information encryption method and device, terminal equipment and a recharging platform. The method comprises the following steps: after sending a rechargeable card purchase request by the terminal equipment, the recharging platform encrypts a password of a recharging card by using a first encryption key to acquire first encrypted data, the first encrypteddata is sent to the terminal equipment; and the terminal equipment decrypts the first encrypted data of the rechargeable card password according to the stored first decryption key to acquire the password of the rechargeable card. During the process of purchasing the rechargeable card, according to the method, the password of the rechargeable card is encrypted, so that the password of the rechargeable card is transmitted in the form of the first encrypted data, even if an illegal user steals the first encrypted data, the password of the rechargeable card cannot be obtained, the password transmission process is safer and more reliable, and property loss of the user or an operator is avoided.

The invention provides a security and protection monitoring system based on the Internet of Things. The security and protection monitoring system comprises a field parameter detection network, a system health self-checking unit, an intelligent video monitoring unit, an information transmission unit, a field maintenance terminal and a visual centralized monitoring platform. The field parameter detection network is used for forming a front-end environment information and article and personnel position information detection network; the system health self-checking unit is used for carrying out periodic self-checking on the system and forming a self-checking report; the intelligent video monitoring unit is used for monitoring personnel access at an entrance, pedestrian flow in a specific areaand abnormal behaviors of personnel; the information transmission unit is used for transmitting detection data and control instructions; the field maintenance terminal comprises an information collection sub-control module, a priority discrimination module and a dual-mode supply module; and the visual centralized monitoring platform is used for receiving the detection data and carrying out visualmanagement. According to the invention, layout can be simpler and more convenient, data can be automatically updated, a transmission process is safer, and management efficiency is higher.

The invention discloses a method and a system for maintaining a computer. The method for maintaining the computer includes the followings steps performed when an abnormal problem occurs in the computer, which are respectively: S1, collecting abnormal information of the computer, invoking detailed analysis and solutions, corresponding to the abnormal information, from an abnormal information database built in advance, and displaying the detailed analysis and the solutions; S2, judging whether a first scheme and/ or a second scheme can be used to solve the abnormal problem according to the detailed analysis and the solutions, which are displayed. The first scheme includes: solving the abnormal problem through the computer according to the displayed solutions, and the second scheme includes: uploading the displayed detailed analysis to a manufacturer of the computer. According to the method for maintaining the computer, the different solutions for solving the abnormal problem are selected by collecting the abnormal information, and therefore a large amount of labor and material cost is saved, and quick, convenient and timely and reliable services are provided to a user.

The invention relates to a database cluster data migration method and system. The method comprises the steps of receiving all data copied in parallel in a batch call point-to-point data copy mode by asource end database cluster; and performing data redistribution in an insert select mode, and re-scattering the received data to computing nodes. According to the method and the system, a destinationend database cluster performs the data redistribution in the insert select mode directly in a database after the data is copied in parallel, so that the security and performance of data extraction, transmission and loading are greatly improved, the data migration time is greatly shortened, and the influence on businesses is reduced.

The invention provides a sterile liquid cross-level transmission device and a pharmaceutical workshop. The sterile liquid cross-level transmission device comprises a casing pipe, fastening chucks, valve bodies and a disposable liquid transferring bag. The casing pipe is used for being installed between walls of different clean areas. The fastening chucks are arranged at the two ends of the casingpipe. The valve bodies can be arranged on the fastening chucks. The end portions of the casing pipe can be sealed through the valve bodies. The disposable liquid transferring bag comprises a bag bodyand a liquid transmission pipe, one end of the liquid transmission pipe penetrates out of a bag opening of the bag body, the other end of the liquid transmission pipe penetrates out of the surface ofthe bag body, and the bag body can be arranged on the fastening chucks. The pharmaceutical workshop at least comprises a B-level clean area, a C-level clean area and an air return passageway, whereinthe sterile liquid cross-level transmission device is arranged between the B-level clean area and the C-level clean area. The sterile liquid cross-level transmission device has the beneficial effectsthat usage is simple, cost is low, and the sterile liquid transmission process is safe and reliable.

The invention relates to the field of bulk conveying, in particular to a bulk conveyor adopting a variable-thickness planetary gearbox. The bulk conveyor comprises a conveyor belt, a plurality of drive rollers, the variable-thickness planetary gearbox and a drive motor, wherein the conveyor belt is wound and distributed on the drive rollers; one end of each drive roller is equipped with a rotary drive device; the drive rollers are connected with the variable-thickness planetary gearbox through the rotary drive devices; the input end of the variable-thickness planetary gearbox is connected witha drive motor; the variable-thickness planetary gearbox comprises a first-stage transmission chain, a planet carrier, a planetary pin, double variable-thickness planetary gears, a first variable-thickness gear ring, a second variable-thickness gear ring, a housing assembly and an output shaft, wherein the first variable-thickness gear ring is connected with the output shaft as an output end; andthe output shaft is connected with the rotary drive devices on the drive rollers. The bulk conveyor adopts a non-solar-wheel drive mode, guarantees a small gap and a small return difference of outputand optimizes the structure; and conveying speed of the conveyor is more stable.