31results about How to "Guaranteed security strength" patented technology

The invention relates to a thick oil environment working device with a logo and a manufacturing method of the logo on the thick oil environment working device. The manufacturing method includes the step of recording a rectangular-ambulatory-plane shaped positioning icon and a long strip icon on the working device. Furthermore, the invention discloses a method and a device for identifying the logo. The method for identifying the logo includes the step: performing multi-information synchronization and identification on a code by using a two-dimensional searching and matching recognition algorithm, and realizing the digital management of the working device. Besides, the invention discloses an identity identification management system of an oil tube. According to the method for encoding and identifying the thick oil environment working device and the management system, the rectangular-ambulatory-plane shaped icon is convenient to position and identify, and also easy to record; the long strip icon is easy to record, clean and identify, and matched up with the principle of binary code; the recognition algorithm of the invention takes the two-dimensional searching and matching as the principle; by sampling a specific sampling point, the sampling frequency is reduced, the recognition scale is effectively improved and the integration of the encoding information is added; moreover, the recognition rate is greatly improved.

The invention relates to a key management method for an integrated avionic system. The key management functions in the entire process from the generation to final destruction of a key and is realized as a functional component for the safety management (GSM-SM) of system management in an integrated modular avionic (IMC) system to perform unified management on all keys in the system; and the key management mainly comprises the following steps of: 1) generating the keys; 2) loading the keys; 3) distributing the keys; and 4) using the keys. The method is favorable for improving the active defenselevel of airborne embedded systems of China, constructing and perfecting a safety guarantee system of the integrated avionic system, defending an equipment system against foreign threats and improving the destruction resistance of the aviation equipment system.

The invention discloses a vehicle front column assembly and an automobile. The vehicle front column assembly comprises an upper reinforcing plate, a lower reinforcing plate, an upper hinge plate, a front column supporting plate, a lower hinge plate and a front wall supporting plate, wherein the upper reinforcing plate and the lower reinforcing plate are independently molded and connected with eachother; the upper hinge plate is arranged on the upper reinforcing plate; the front column supporting plate and the lower hinge plate are independently molded and connected with each other; the frontcolumn supporting plate is connected to one side, facing away from the upper reinforcing plate, of the lower reinforcing plate; the lower hinge plate faces away from the lower reinforcing plate; and the front wall supporting plate is connected to the connecting part of the lower hinge plate and the front column supporting plate. The automobile comprises a front wheel cover side sill outer panel and the vehicle front column assembly; and the upper reinforcing plate and the lower reinforcing plate are both connected with the front wheel cover side sill outer panel in a laminated manner. According to the vehicle front column assembly and the automobile, the anti-bending capacity of a front column during high speed frontal collision or biasing collision is improved, the stress is effectively dispersed, the deformation of the front column during high speed frontal collision or biasing collision is reduced, the stability of the front column is kept, and the safety of the whole automobile isenhanced.

Embodiments of the present application provide a device registration method and device, a device authentication method and device, a device data transmission method and device, electronic devices, and computer-readable storage media. The registration method includes: before the registration of the device, reading the first SRAM value generated by powering on the device, and generating registration information according to the first SRAM value and sending it to the registration server for storage; when the device is registered, reading the first SRAM value of the device The second SRAM value generated by powering on the device, generates a registration request based on the second SRAM value and sends it to the registration server; wherein, the registration server searches the registration information for the first SRAM value that matches the second SRAM value according to the registration request, and completes this Device registration process; this technical solution only needs to read the SRAM value and register it to the registration server when the device is registered, and does not need to perform operations such as burning certificates on the device on the production line, which is convenient for device access and improves device authentication. Access flexibility.

The invention relates to a wood-plastic window frame section bar forming mould. The wood-plastic window frame section bar forming mould is sequentially connected to a neck mould a, a neck mould b, a neck mould c, a confluence board, a bracket board a, a bracket board b, a transition board, a mould body as well as a core rod from top to bottom through bolts, wherein a mould cavity formed by the neck mould a, the neck mould b and the neck mould c comprises a window frame opening cavity A and a window frame opening cavity B which are arranged left and right and are rectangular, the window frame opening cavity A is higher than the window frame opening cavity B; the opening part of the window frame opening cavity A and the opening part of the window frame opening cavity B are arranged upwards;the two sides of the opening part of each of the window frame opening cavity A and the window frame opening cavity B are inwards provided with short convex ribs, and the outer side of the window frameopening cavity A is further provided with a long convex rib; a plurality of soundproof cavities are arranged below the window frame opening cavity A and the window frame opening cavity B, and a plurality of reinforcing rib plates are arranged among the soundproof cavities; and the bottoms of the soundproof cavities are provided with a mounting long rib plate. The wood-plastic window frame sectionbar forming mould is simple and practical in structural design, is good in use effect, can guarantee safety strength while achieving the good soundproof effect, and also has a very high practical usevalue.

The invention relates to a sequence cipher realization device and a sequence cipher realization method thereof. The method comprises the following steps: firstly, generating a sequence source by adopting Galois-structure nonlinear feedback shift registers designed based on mixing and diffusion parts as a sequence source drive; and then, after the registers load keys, initialization vectors and constant parameters completely, carrying out idle operation for a certain number of beats, carrying out nonlinear operation on an output of the diffusion unit so that the output is taken as a key stream sequence, and carrying out exclusive or operation on the key stream sequence together with a plaintext sequence to form a ciphertext. According to the sequence cipher realization device and the sequence cipher realization method thereof disclosed by the invention, relatively less operation and hardware cost can be used; through combined use of the mixing unit and the diffusion unit, after multiple times of iterations, a pseudorandom sequence is output; according to hardware resource and speed requirements, the deployment and the implementation are flexible; and the requirements of communication for diverse networks and devices are met.

The invention relates to a data security system applicable to sharing an encrypted file and recovering a secrete key and a method thereof, which are used for converting a source file into the encrypted file, wherein an administrator secrete key and a user secrete key are input through an input unit; a random secrete key is generated through a processing unit with a random derivation function according to the administrator secrete key; and a secrete key storage area is provided for storing the random secrete key and the user secrete key, which are encrypted and protected through the administrator secrete key. In the encryption process, an encryption module randomly generates a session secrete key so that the content of the source file is encrypted into encrypted data; the session secrete key is encrypted through the administrator secrete key or the user secrete key so that an encrypted session secrete key is generated; and the encrypted session secrete key and the encrypted data are packed into the encrypted file. Thereby, the encrypted file only has one encrypted session secrete key so that the safety strength of the encrypted file can be ensured. In the decryption process, the administration secrete key can be used by an administrator to decrypt the secrete key storage area, and consequently the random secrete key and the user secrete key are taken out to decrypt the encrypted file.

The invention discloses a safety helmet. The safety helmet comprises a helmet shell (1), an elastic buffer layer (2) and an inner layer (3), wherein a helmet brim (7) is arranged on the helmet shell (1), a bulge (4) is arranged on the top of the helmet shell (1), a first air hole (5) is formed at the joint of the bulge (4) and the top of the helmet shell (1), a second air hole (6) is formed in the side part of the edge of the helmet shell (1), and a protective cover (8) is arranged on the helmet shell (1); the elastic buffer layer (2) is made of silicone rubber, and massage bulges (9) are arranged on the elastic buffer layer (2); and the inner layer (3) is in an annular structure. The safety helmet is high in safety performance, good in protective effect, and rapid in heat dissipation, and can massage the head.