8results about How to "Not easy to attack" patented technology

The invention relates to the technical field of communication, in particular to a communication method and system, electronic equipment and a storage medium. The communication method comprises the steps that a first communication end sends a connection request to a second communication end; the second communication end verifies the first identity certificate based on the root certificate, verifies the first signature information based on the first public key when the verification is passed, and generates a second temporary public key and a second temporary private key when the verification is passed; the second communication end generates a public session key based on the first temporary public key and the second temporary private key, and sends a request response to the first communication end; and the first communication terminal verifies the second identity certificate based on the root certificate, verifies the second signature information based on the second public key when the verification is passed, and generates a public session key based on the first temporary private key and the second temporary public key when the verification is passed. Through the process, the security of establishing the secure data transmission channel can be improved.

The utility model discloses a fetter belt adding auxiliary device, and relates to the technical field of safety protection. According to the technical scheme, the fetter belt adding auxiliary device comprises a support, a foot supporting plate is arranged on the support and fixed to the lower portion of the support, and the upper surface of the foot supporting plate is parallel to the ground. The beneficial effects of the utility model are that through the device, a supervised person cannot observe the action of a prison worker, so that the supervised person cannot suddenly initiate an attack. Besides, when the fetters are additionally arranged, the shanks of the supervised person are in the air, and the height of the foot supporting plate is reasonably set, so that a prison worker can additionally carry the fetters only by bending down without squatting down. In this way, a prison worker can make a response quickly when facing an emergency. Meanwhile, as the supervised person stands with one leg and the gravity center is unstable, the supervised person is not easy to suddenly initiate attacks.

The invention firstly provides a sampling method applied to network measurement, and provides a routing-independent whole-network large flow detection method based on adaptive sampling on the basis of the sampling method of network measurement, and the detection method comprises the following steps: a measurement point sends a sampled data packet to a central controller according to the sampling method; the central controller determines the minimum value in the number of the received data packets sampled at all the measurement points at the end of the current fixed time interval, and selects kmin data packets corresponding to different Hash values from the data packets according to the sequence of the Hash values from small to large; and the central controller counts the number of data packets of different streams in the selected kmin data packets according to the stream identifiers. According to the routing-independent whole-network large flow detection method based on adaptive sampling, topology between measurement points and the routing condition of flow are not concerned, the occupied data surface memory is small, and the whole-network large flow is accurately detected.

The invention relates to the technical field of information security, and discloses an information security protection method and system based on cloud computing. According to the method and the system, user identity authentication accuracy is calculated through an access control module, a data encryption module performs encryption protection on authorized user data according to a formula to obtain encrypted user data, and a security monitoring module monitors the security state of the system and calculates the occurrence frequency of security events and the false alarm rate of abnormal behaviors after the user data is encrypted. The malicious code protection module further analyzes the data transmitted by the security monitoring module and calculates the malicious risk level, the network security protection module calculates the matching degree of a network flow peak value and a firewall rule according to the malicious risk level, and the security policy making module makes a security policy according to the data transmitted by the network security module. And calculating a security risk assessment index, and making a cloud computing information security protection strategy according to the security risk assessment index.

This application provides a pathfinding method, apparatus, medium, and computer device for AI characters. The pathfinding method includes: obtaining a starting position and an ending position of a pathfinding task, and loading a game map corresponding to the pathfinding task, wherein the game map is divided into a predetermined number of regions, including covered regions and uncovered regions; obtaining a set of cover segments corresponding to each uncovered region, wherein each cover segment is a boundary among the boundaries of the predetermined number of regions that satisfies a predetermined occlusion condition; and determining the optimal path for the AI ​​character to move from the starting position to the ending position on the game map based on the player character's position and the set of cover segments corresponding to the uncovered region where the player character's position is located.

The present invention provides a hydrolysis-resistant PC resin composition and a preparation method thereof; the composition comprises the following components in parts by weight: PC resin: 83-93 parts; hydrophobic resin: 4-9 parts; compatibilizer: 3-8 parts; hydrolysis stabilizer: 0.2-2 parts; toughening agent: 0.5-3 parts; antioxidant: 0.1-0.5 parts; the preparation method of the composition comprises the following steps: (1) preparing the components according to the above parts by weight; (2) adding the above weight percentages to a high-speed mixer, mixing them thoroughly, and then placing them in a screw machine for melt extrusion, cooling and granulation to obtain a hydrolysis-resistant PC resin composition. Compared with the prior art, the PC resin composition obtained by the present invention has excellent toughness, heat resistance and rigidity. At the same time, the resin composition has excellent hydrolysis resistance, and the resin composition is simple to prepare, has low material cost and high production efficiency.

The present invention discloses a Passkey-based keyless blockchain wallet implementation method, which relates to the field of blockchain technology, and includes the following steps: S1, account creation operation: Passkey creation; public key extraction and use; public key submission and wallet address calculation; wallet address inspection and deployment; account creation completion; S2, transaction operation: transaction request initiation and basic information filling; transaction signature generation using Passkey; transaction data submission after signature; transaction request verification by entry contract; transaction fee inspection; fee deduction and transaction submission; transaction completion and transaction hash generation. In the Passkey-based keyless blockchain wallet implementation method, users can log in to the wallet or confirm transactions through device authentication, without the need to remember and enter complex passwords or mnemonics, and the private key is stored in the security module of the device, which is not easily extracted and attacked.

The invention belongs to the technical field of proton exchange membranes, particularly discloses a sulfonation-site-controllable non-fluorine proton exchange membrane as well as a preparation method and application thereof, and develops a sulfonation-site-controllable non-fluorine ionomer proton exchange membrane synthesis method, the main chain of the proton exchange membrane does not contain heteroatoms such as oxygen and sulfur, and the proton exchange membrane is high in hydrolysis resistance and acid resistance stability; due to an all-carbon-carbon connection structure, hydroxyl radicals are not easy to attack the polymer, so that the free radical resistance stability of the polymer is improved; meanwhile, as for ion exchange resin prepared through traditional polymerization-random sulfonation, sulfonate radicals of the polymer are connected to a long alkane side chain, arrangement is regular, swelling of the polymer is small, and size stability is good; proton exchange membranes of different IECs can be obtained by adjusting the proportion of optional formula 3A. The proton exchange membrane prepared by the invention has low water absorption rate, high proton conductivity, high mechanical stability and antioxidant stability, and can be used as electrolyte materials for fuel cells, water electrolysis hydrogen production, flow cells, electrodialysis and the like.