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77results about How to "Solve the problem of low security" patented technology

Ciphertext generation method, ciphertext decryption method and encryption/ decryption device

The invention discloses a ciphertext generation method, a ciphertext decryption method and an encryption / decryption device, and is used for solving the problem of poor safety when a ground-up encryption algorithm of the Java language is used for carrying out encryption transmission on a cross-system password or information in the prior art. The ciphertext generation method comprises the following steps: according to a preset key file and an identification number generation method, obtaining an encrypted identification number, and randomly generating a code table comprising a plurality of characters; according to the obtained encrypted identification number and each plaintext character to be encrypted, looking up a code table character respectively corresponding to each plaintext character to be encrypted from the generated rate table along an appointed code table lookup direction; according to the found code table character, generating a ciphertext. Therefore, the safety of the ciphertext not only depends on the encryption algorithm but also depends on the preset key file and the randomly-generated code table, and the ciphertext can not be accurately decrypted even if a decryption algorithm is obtained only by using different key files and code tables to carry out encryption processing on the plaintext.
Owner:XINYANG BRANCH HENAN CO LTD OF CHINA MOBILE COMM CORP

Obstacle avoidance strategy determination method and device and storage medium

The invention relates to an obstacle avoidance strategy determination method and a device and a storage medium, and belongs to the technical field of computers. The method comprises the steps: inputting the current environment information of a current driving vehicle into an estimation network, and obtaining a Q value corresponding to each driving operation, wherein the estimation network is obtained through training by using first training data, and the first training data is extracted from a secure data container and an unsecure data container; sorting the driving operations according to thedescending order of the Q values; for the driving operation sorted at the i position, determining whether the driving operation at the i position is a safe driving operation; if the driving operation of the i position is not the safe driving operation, setting i to be i+1 until the driving operation of the i position is the safe driving operation, determining the driving operationof the i position to be an obstacle avoidance strategy of the current running vehicle; thereof the problem that an obstacle avoidance strategy determined based on rules is not high in safety canbe solved, and the safety of the determined obstacle avoidance strategy is improved.
Owner:知行汽车科技(苏州)股份有限公司

Modularly-designed fuse safety insurance mechanism

ActiveCN112525022AGuaranteed processing securityQuestions Guaranteed to AnswerAmmunition fuzesCantilevered beamExplosive train
The invention discloses a modularly-designed fuse safety insurance mechanism which is composed of three times of safety insurances, the first time of safety insurance is a recoil insurance; the secondtime of safety insurance is a centrifugal insurance; the third time of insurance is a long-distance insurance; and the three times of insurances and an explosion-proof sliding block form a main bodyof the safety insurance mechanism. At ordinary times, the explosion-proof sliding block is clamped by a recoil safety device composed of a cantilever beam mass block and a centrifugal safety device composed of a spring mass block, an explosion propagation sequence is separated, and the safety of a fuse is guaranteed. In the launching state, the safety insurance mechanism sequentially relieves thethree times of insurances by recognizing recoil force, centrifugal force and other environmental force, the explosive-proof sliding block relieves corresponding constraints, locking is completed, a detonating hole is aligned, and the safety insurance mechanism relieves the insurances. Based on the three-dimensional additive manufacturing technology, the size and the complexity of the safety insurance mechanism can be effectively reduced, the mechanism is convenient to assemble due to the modular design principle, and meanwhile the workload of optimization design of the mechanism in the futureis greatly reduced.
Owner:NANJING UNIV OF SCI & TECH

Grinding material continuous and automatic feed device capable of achieving pressure stabilization and flow stabilization

The invention discloses a grinding material continuous and automatic feed device capable of achieving pressure stabilization and flow stabilization. The device comprises a control module, dual spherical high-pressure grinding material tanks, high-pressure water pipelines, low-pressure water pipelines, feeding pipelines, a grinding material water jet pipeline, valves and sensors, wherein the valvesand the sensors are arranged on the pipelines. Valve seats of the dual spherical grinding material tanks are connected with the feeding pipelines, the high-pressure water pipelines and the low-pressure water pipelines. Water pumps are connected with above function devices through high-pressure pipelines, overflow valves, a main proportional flow valve, a bypass proportional flow valve, pneumaticball valves and high-pressure ball valves are arranged in the pipelines, and various functions are achieved through valve on-off combined control. In the device, operation of pure water jet and continuous and automatic grinding material water jet is achieved through system valve on-off combination; meanwhile, through cooperation of the sensors connected to the control module, an energy accumulatorand the flow valves, pressure stabilization and flow stabilization can be achieved, and automatic adjustment of the grinding material concentration and overpressure alarm can be achieved. The deviceis high in safety, simple in operation and capable of being used widely.
Owner:中国平煤神马控股集团有限公司 +2

Image encryption method based on self-updating transformation, double random three-dimensional matrix scrambling and DNA calculation

The invention provides an image encryption method based on self-updating transformation, double random three-dimensional matrix scrambling and DNA calculation. The method comprises the following steps: giving an initial value of a 4D memristor chaotic system to generate a chaotic sequence, and calculating a hash value of a plaintext image; selecting elements from the chaotic sequence according tothe hash value to form a new chaotic sequence; performing self-updating transformation on the plaintext image P (M*N) to obtain a self-updating transformed image P3; carrying out DNA dynamic coding onthe image P3 by utilizing the DNA coding rule sequence to obtain a DNA sequence P5, and converting the DNA sequence P5 into a three-dimensional DNA matrix P6; generating a three-dimensional orthogonal Latin cube Lz1 and a three-dimensional cat mapping sequence Mp, constructing a double random three-dimensional matrix scrambling rule, and scrambling the three-dimensional DNA matrix P6 to obtain ascrambled three-dimensional matrix P7; carrying out plane diffusion on a to-be-diffused plane in the three-dimensional matrix P7 to obtain a diffused three-dimensional DNA matrix P8; performing DNA dynamic decoding on the three-dimensional DNA matrix P8, and then converting the three-dimensional DNA matrix P8 into a two-dimensional matrix with the size of M * N to serve as a ciphertext image C.
Owner:HENAN UNIVERSITY

Wireless communication method of wireless intelligent door lock

The invention discloses a wireless communication method of a wireless intelligent door lock. According to the method, a key end processor is woken up by a low-frequency wake-up signal, a key ID is sent to a door lock base station by a high-frequency signal, the door lock base station performs decryption to obtain a local key, the encrypted door lock base station ID is sent to the key end by the high-frequency signal, the key end obtains the door lock base station ID after performing decryption and obtains a variable key according to the ID, the variable key is sent to the door lock base station through high frequency, and the lock base station compares the local key with the variable key, and then controls an actuator to open the door after confirming the match. By adopting the wireless communication method disclosed by the invention, the problem that the communication security of the wireless intelligent electronic door lock is not high is solved, the variable key can be formed by a rolling code and the local key, meanwhile since the rolling code is added to the encrypted data, the decrypted data and the variable key are both dynamically variable, each encrypted message encrypted by a double encryption algorithm has uniqueness, and the repetition probability of the encrypted message is infinitely close to zero, thereby effectively preventing a ciphertext from being recorded or cracked.
Owner:阳卓昆

Door sheet pressing device for vehicle-mounted toilet machining and application method thereof

ActiveCN110486358AStable turning speedEasy to take outMaterial gluingEngineeringMachining
The invention discloses a door sheet pressing device for vehicle-mounted toilet machining. The device comprises a support base; two sets of support feet are mounted on the side near the top of the support base in parallel; cushion plates are welded at the two ends of the top of the support base; two sets of support columns are mounted at the top of each cushion plate in parallel; and positioning plates are arranged at the tops of the support columns. The device is provided with cover plates, and the cover plates are fixed with connecting plates and fixed feet through rotating shafts, so that the overturning of the cover plates is realized, and the pressing operation of the whole device is convenient; driving rods are arranged at the tops of the cushion plates for driving transmission rods,and the support columns are driven by rotation of the transmission rods for lifting cooperation with jacking cylinders, so that the positioning plates can be lifted; through cooperation with pressingof pressing plates, the door sheet pressing efficiency is improved; and through arrangement of fixing pieces, the bottoms of door sheets placed on the positioning plates can be fixed to prevent movement during pressing of the door sheets, so that the door sheet pressing accuracy is improved.
Owner:ANHUI JINCEN COMPOSITES

Convenient-to-operate charging equipment for new energy automobile

InactiveCN111923769ASolve the problem of inconvenient use and low safety of charging equipmentSolve the problem of low securityCharging stationsNon-rotating vibration suppressionNew energyStructural engineering
The invention belongs to the technical field of new energy, in particular to convenient-to-operate charging equipment for a new energy automobile. In view of the problems that the existing new energyautomobile charging equipment is inconvenient to use and the safety of charging equipment is not high, the convenient-to-operate charging equipment for a new energy automobile comprises a pile body; abase is fixedly mounted at the lower end of the pile body; idler wheels are movably installed behind the lower end of the base. Supporting legs are fixedly mounted in front of the lower end of the base. Fixing rods are fixedly mounted on the outer surfaces of the two ends of the base correspondingly. A stop rod is fixedly connected to one end of the fixing rod, a mounting rod is fixedly mounted on the outer surface of the rear end of the pile body, a positioning rod is fixedly connected to the rear end of the mounting rod, a handle is fixedly connected to the upper end of the positioning rod,and a mounting base is fixedly mounted on the outer surface of the lower end of the base. The charging equipment can be conveniently moved and fixed by utilizing the idler wheels and the supporting legs, so that the charging equipment is convenient to use, and the safety of the charging equipment during use can be improved.
Owner:吴报飞
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