Digital certificate management method of user packet communication network and user terminal for accessing into user packet communication network

The invention relates to a digital certificate management method of a user packet communication network and further relates to a user terminal for accessing into the user packet communication network. In the user packet communication network, the invention aims at realizing that one user in the network is only allowed to communicate with the users in the same group but not in the other groups, and reducing extra burden which is caused by network operation and network maintenance since a communication authority between two users is not need to be judged by a on-line third part. The invention provides the digital certificate management method of the user packet communication network: for each group, a main secret key which is different from the secret keys of other groups is generated and the secret key parameter of the group is generated by the main secret key of the group, therefore, each user knows the secret key parameter of the group; and for each user, the private key of the user is ...

Method and system for security transmission of certificate document

The invention discloses a method for safely transferring a certificate file and a system. The method is based on a system comprising a wireless terminal module, a wireless access module and an identification server. The wireless terminal module accesses network through the wireless access module. The method comprises the following steps: identifying whether the server and the wireless access module are in the same device, if true, the identification server generates an access certificate file of the wireless access module and transfers the access certificate file to the wireless access module; the identification server generates a terminal certificate file of the wireless terminal module according to the data request information transferred by the wireless terminal module and transfers the terminal certificate file to the wireless terminal module. According to the method for safely transferring the certificate file of the invention, the identification server can automatically generate the ...

Miners' lamp

Method for locating client node in wireless netted network and wireless netted network system

The invention discloses a method for the location of a client node in a wireless mesh network. The method comprises the following steps: a server receives the location request information transmitted by the client node and determines the positions of at least two backbone nodes close to the client node; time synchronizing information is transmitted to the client node and the backbone nodes by the server; after time synchronization is finished on the client node and the backbone node, location feature information is transmitted to the backbone nodes by the client node; the position information of the client node corresponding to each backbone node is determined by the backbone node according to the difference value between the transmitting time and the receiving time of the location feature information, and the position information is transmitted to the server; the location of the client node is determined by the server according to the posiiton information. The time synchronization is carried ...

Flavone-lobed kudzuvine root tea and preparation method thereof

The invention belongs to the technical field of food processing, and relates to a flavone-lobed kudzuvine root tea and a preparation method thereof. A purpose of the present invention is to provide a technical method so as to solve the problems of the waste of agricultural product processing resources, and the reliability and the safety of the functional food. The flavone-lobed kudzuvine root tea is characterized in that the lobed kudzuvine root leftover produced during a processing process and solid waste are adopted as main materials, Maoyan enzyme, citrus peel or other plant materials suitable for preparing tea and having the high flavone compound content are adopted as component adjusting assisted materials, licorice root or other plant materials with medical and edible dual-purpose is adopted as a sweetener, and moderate raw material crushing, baking flavor distilling, scientific compatibility, low temperature impurity removing on the extraction solution, component adjusting and other ...

WAPI-based authentication method of wireless mesh network

The invention provides a WAPI-based authentication method of a wireless mesh network. The method comprises the following steps: an identification and authentication server intensively identifies various nodes to realize centralized management, after an association process of a request node and a node which is accessed to the network is completed, the node which is accessed to the network sends authentication activation information to the request node, subsequent processes of certificate authentication and shared key establishment by a session key are started, the shared key is established between the request node and the node which is accessed to the network, thus organically combining WAPI with the wireless mesh network, and after the shared key is established by the request node and the node which is accessed to the network through a key agreement, a data communication process can be completed according to the shared key to realize safe communication process.

Simple and easy environmental protection blowout preventer

The utility model discloses a simple and easy environmental protection blowout preventer, including cam, sealing washer, spacer pin, intercommunicating pore, plug, needle type sealing member and sleeve pipe, the sleeve pipe is through threaded connection to casing head to prevent that well liquid from spilling over from the pit shaft in, simple and easy environmental protection blowout preventer passes through threaded connection to the casing head, cam fixed mounting is on simple and easy environmental protection blowout preventer's well upper portion, and with the spanner cooperation, the connection of after section of cam has a sealing washer, the spacer pin sets up on the pipeline, is equipped with the intercommunicating pore in the pipeline top at spacer pin rear, and the intercommunicating pore makes in the well liquid with external intercommunication, and the below of intercommunicating pore is equipped with the plug, and the connection of after section's of plug is needle type sealing ...

Data processing method and device, computer equipment and storage medium

The invention relates to a data processing method and device, computer equipment, a storage medium and a computer program product. The method comprises the steps of obtaining data configuration information of target export data, style information of an export file and format configuration information of a target column in the export file, determining an export standard interface according to the data configuration information and a target database, determining a to-be-exported data entity type according to the export standard interface, and outputting the to-be-exported data entity type according to the to-be-exported data entity type. Screening and exporting a data column according to the data entity type, the data configuration information and the target database; writing the data corresponding to the exported data column into a temporary exported file according to the style information of the exported file, and converting the data of the target column in the temporary exported file according ...

Satellite measurement and control equipment important data backup and recovery method, device and equipment

The invention relates to a satellite measurement and control equipment important data backup and recovery method and device and computer equipment. The method comprises the steps that important data backup of the satellite measurement and control equipment is carried out through a monitoring processing unit, a satellite service computer and a nonvolatile memory on the satellite measurement and control equipment according to a preset backup frequency or rule, and when data recovery is carried out, if the important data backed up by the monitoring processing unit is valid, the important data is recovered; if yes, the important data of the monitoring processing unit is used for recovery, otherwise, the important data of the satellite service computer is used for recovery, and when the important data of the satellite service computer is invalid, the important data in the nonvolatile memory is used for recovery. According to the method provided by the invention, the state recovery of the satellite ...

Prevent mouth of irritating of wire drawing

The utility model discloses a prevent mouth of irritating of wire drawing, which comprises a housin, the casing specifically has feed inlet and discharge gate, the discharge gate sets up in the bottom of casing, its characterized in that: still include airflow channel and be used for opening and closing the end cap of this discharge gate, the middle part of end cap bottom surface is equipped with the mouth of blowing, thereby airflow channel switch -on this blow mouthful make air current along the mouth of blowing blow out insufflate wrapping bag or packing bottle with the feed liquid of remnants on the end cap in. The middle part of end cap bottom surface is equipped with the mouth of blowing, crack between the filling is accomplished at every turn, the end cap is plugged up the discharge gate and is prevented the feed liquid to flow, thus the air current along the mouth of blowing blow off blow in wrapping bag or packing bottle with the feed liquid of remnants on the end cap in, overcome ...

Motor shifter

The utility model provides a motor shifter belong to the motor shift professional tool, the motor shifter comprises fixed plate, fixed block and jackscrew, the fixed plate be " L " the shape, the bottom is provided with the first through -hole that can pass the motor fixed screw, the side is provided with the second through -hole that can insert the jackscrew, the fixed block both sides be provided with the third through -hole of vertical direction, the bolt is twisted on the slide rail of electrical motor after inserting the third through -hole soon, realizes that fixed block and slide rail of electrical motor relative position are fixed, be provided with in the middle of the fixed block and revolve the screw thread through -hole of twisting the jackscrew, jackscrew one side of being close to the fixed plate be provided with stifled cap, the opposite side is provided with the jack, is furnished with the inserted bar in the jack, the utility model discloses motor shifter not only just alone ...

Water drop angle measuring method, device and system

The invention relates to the technical field of test measurement and image processing, in particular to a water drop angle measuring method, device and system.The method comprises the steps that a test solution is dropwise added into a sample, and a light source is turned on; turning on a camera, and collecting a first image of the test solution; judging whether the test solution is bilaterally symmetrical for the first time; if the result of the first judgment is that the test solution is bilaterally symmetrical, rotating the sample and the test solution by a set angle, acquiring a second image of the test solution, and judging whether the test solution is bilaterally symmetrical or not for the second time; if the result of the second judgment is that the test solution is bilaterally symmetrical, making a tangent line of the test solution, obtaining four water drop angles from an included angle between the tangent line and the sample plane, and obtaining a water drop angle measurement ...

Beam -pumping unit belt elasticity ware

The utility model provides a beam -pumping unit belt elasticity ware belongs to the oil field and uses mechanical equipment, this beam -pumping unit belt elasticity ware includes the fixed plate, and the top of connecting the fixed plate through the pivot is provided with the main support of gyro wheel, and the middle and upper position of main support is connected to fixed plate, the other end through the pivot assistant support is connected through the pivot to one end, assistant support from the top down is in proper order including putting on the shelf, bolt, nut, being equipped with cap and undercarriage, the setting is passed at the through -hole at undercarriage top in the bottom that bolt upper end fixed connection put on the shelf, lower extreme, and the bolt has the nut putting on the shelf to revolve to twist with the mid portion of undercarriage, is equipped with the cap and installs the part of stretching out in the bolt from the undercarriage, the utility model discloses beam ...

Arrangement structure of villa lift

The invention relates to an arrangement structure of a villa lift. The arrangement structure comprises a lift car, a counterweight system, a traction wheel and a traction steel wire rope; the arrangement structure is characterized in that a rope sheave fixing beam is arranged at the top of a shaft, the rope sheave fixing beam is used for mounting a guide wheel assembly and a clamping roller assembly by use of clamping plates, respectively, a mainframe bearing beam and a supporting steel channel are fixed at the lower end of the rope sheave fixing beam, respectively, a tractor assembly is located at the top of the shaft in a position above the lift car and fixed on the mainframe bearing beam and the supporting steel channel, and the mounting part of the tractor assembly is partially coincident with the height of the rope sheave fixing beam. The rope sheave fixing beam is used for fixing and mounting the guide wheel assembly and the clamping roller assembly by use of the clamping plates, ...

Communication method for audio data and apparatus thereof

The present invention discloses a audio data communication method and a communication device thereof. The communication method comprises the steps of a second client establishing a data connection with a first client according to the request information sent by the first client; receiving the first data information which comprises the first random number, is sent by the first client and is encrypted according to the second identification of the second client; the second client decoding the first data information according to a pre-obtained user certificate and sending the second data information which comprises the second random number, and is encrypted according to the first identification of the first client; the second client generating a key according to the first random number and the second random number, wherein, the key is the same as the key generated by the first client; the second client encrypting the audio data according to the key and sending the audio data to the first client ...

Service load balancing method for wireless mesh network

The invention discloses a method for equalizing traffic load in a wireless mesh network (WMN). When the number of mesh access points (MAP) accessing a mesh point (MP) is not less than a first preset maximum value and the number of stable MAP accessing the MP is not less than a first preset stable value (i.e. the MP is in the saturation state of the first preset maximum value and the saturation state of the first preset stable value), the MP sends a switch request signal, an adjacent MP, which locates in the coverage area of the MP and has the number of MAP less than a second preset maximum value and the number of stable MAP less than a second preset stable value, receives the switch request signal, and when the switch requirements are judged to be satisfied in accordance with a preset judgment manner, the MAP accessing in the MP is switched to the adjacent MP which satisfies the switching requirements, so that the adjacent MP can share the traffic load of the MP which is in the saturation ...

Method for locating client node in wireless netted network and wireless netted network system

The invention discloses a method for the location of a client node in a wireless mesh network. The method comprises the following steps: a server receives the location request information transmitted by the client node and determines the positions of at least two backbone nodes close to the client node; time synchronizing information is transmitted to the client node and the backbone nodes by the server; after time synchronization is finished on the client node and the backbone node, location feature information is transmitted to the backbone nodes by the client node; the position information of the client node corresponding to each backbone node is determined by the backbone node according to the difference value between the transmitting time and the receiving time of the location feature information, and the position information is transmitted to the server; the location of the client node is determined by the server according to the posiiton information. The time synchronization is carried ...

Service load balancing method for wireless mesh network

The invention discloses a method for equalizing traffic load in a wireless mesh network (WMN). When the number of mesh access points (MAP) accessing a mesh point (MP) is not less than a first preset maximum value and the number of stable MAP accessing the MP is not less than a first preset stable value (i.e. the MP is in the saturation state of the first preset maximum value and the saturation state of the first preset stable value), the MP sends a switch request signal, an adjacent MP, which locates in the coverage area of the MP and has the number of MAP less than a second preset maximum value and the number of stable MAP less than a second preset stable value, receives the switch request signal, and when the switch requirements are judged to be satisfied in accordance with a preset judgment manner, the MAP accessing in the MP is switched to the adjacent MP which satisfies the switching requirements, so that the adjacent MP can share the traffic load of the MP which is in the saturation ...

Method for expressing two curved box girder bridge bending moment internal forces without considering supporting eccentric distance

The invention discloses a method for expressing two curved box girder bridge bending moment internal forces without considering supporting eccentric distance. The polynomial function of the two internal forces Mymax (exerting) and Mymax (supporting) is shown in the specification, wherein Mymax (exerting) expresses the maximum bending moment in the y direction in a normal using limit state, Mymax (supporting) expresses the maximum bending moment in the y direction in a limit state of the bearing capacity, the unit of Mymax (exerting) and the unit of Mymax (supporting) are kN.m, and fitting variables are expressed by x1, x2, x3, x4, x5 and x6. The method has the advantages that in the design of the curved box girder bridge internal forces, the method for expressing the internal forces does not need to consider influences on the two bending moments by the supporting eccentric distance. The problem that according to an existing method, influences of the supporting eccentric distance are considered ...

Beam -pumping unit balancing piece adjusting device

The utility model relates to a beam -pumping unit technical field especially relates to beam -pumping unit balancing piece adjusting device. The utility model discloses a type frame and the articulated cooperation of type B frame, through the pneumatic cylinder application of force, a type frame opens with the reverse cooperation of type B frame and reaches the effect of propping up the balancing piece, reaches the purpose of moving balance piece through rotating the roll axis, has reduced intensity of labour, has reduced the potential safety hazard, has shortened the dead time, has reduced manufacturing cost.

Elevator car crosshead sheave structure

The invention relates to an elevator car crosshead sheave structure. The elevator car crosshead sheave structure is characterized by comprising at least two spring damping car crosshead sheave assemblies, and each spring damping car crosshead sheave assembly comprises rope sheave clamping plates, a damping spring and a balancing part. A rope sheave is fixed to one end of each rope sheave clamping plate while the other end of each rope sheave clamping plate is fixed to a car frame through a spindle which is penetratingly arranged on the axle frame, and the bottom of each spindle is fixed onto a connection bottom plate; each damping spring is fixedly connected onto the corresponding connection bottom plate through a spring fixing seat and sleeves the corresponding spindle; each balancing part is fixed between the two rope sheave clamping plates to enable the two spring damping car crosshead sheave assemblies to act synchronously. By the aid of the two spring damping car crosshead sheave assemblies ...

Communication method for audio data and apparatus thereof

The present invention discloses a audio data communication method and a communication device thereof. The communication method comprises the steps of a second client establishing a data connection with a first client according to the request information sent by the first client; receiving the first data information which comprises the first random number, is sent by the first client and is encrypted according to the second identification of the second client; the second client decoding the first data information according to a pre-obtained user certificate and sending the second data information which comprises the second random number, and is encrypted according to the first identification of the first client; the second client generating a key according to the first random number and the second random number, wherein, the key is the same as the key generated by the first client; the second client encrypting the audio data according to the key and sending the audio data to the first client ...

Network video monitoring system capable of achieving automatic intrusion alarm

The invention discloses a network video monitoring alarm system based on an internet and image video processing technology and capable of achieving automatic intrusion alarm. The monitoring system comprises cameras, home gateways connected with the cameras, a network video monitoring management platform connected with the home gateways through the internet and user terminals connected with the network video monitoring management platform through the internet. The network video monitoring alarm system has the advantages of being low in using cost, convenient to establish, high in safety, capable of sending out alarm information and conducting videorecording on intrusion objects in real time, and convenient to use.

Pearl barley acne cream and preparation method thereof

The invention discloses pearl barley acne cream and a preparation method thereof. The pearl barley acne cream consists of the following components in parts by weight: 3 to 5 parts of pearl barley extract, 10 to 20 parts of ethanol, 4 to 8 parts of glycerin monostearate, 0.1 to 0.3 parts of ethyl p-hydroxybenzoate, 2 to 4 parts of hydroxymethyl cellulose, 1 to 3 parts of polyoxyethylene sorbitol mono-laurate, 1 to 3 parts of erythrocin, 6 to 8 parts of glycerol, 0.1 to 0.3 parts of essence and 60 to 80 parts of water. Compared with the prior art, the invention has the following beneficial effects: (1) the pearl barley acne cream has the effects of resisting bacteria, relieving itching and dissolving cuticles of pores; (2) the pearl barley acne cream has a significant curative effect and does not have any side effects, and the recovery rate can reach above 98%; (3) the pearl barley acne cream also can serve as face cream and achieves a skin-care effect.

Software development scheduling method, device and system, computer equipment and medium

The invention relates to a software development scheduling method, device and system, computer equipment and a medium. The method comprises the following steps: pushing an item menu corresponding to development software, identifying a target item selected in the item menu, and obtaining a target item identifier; displaying a project stage selection menu corresponding to the target project identifier; querying a corresponding target script in a preset script library according to the target project identifier and the project stage selection result; executing the target script, accessing a development terminal corresponding to the target project, and obtaining a target running log of the target project in the selected project stage; and visually pushing the target operation log. By adopting the scheme, the software development efficiency can be improved.

Oil field sealing cap drawer

The utility model provides an oil field sealing cap drawer belongs to the oil field and uses extracting tool, fixed plate (1) of this oil field sealing cap drawer in can transversely putting into the oil pipe sealing cap draw -in groove, symmetry set up have vertical open -ended constant head tank (2) on fixed plate (1), and in inside be provided with positioning bolt (3) of constant head tank (2), constant head tank (2) width is less than the big footpath of screw thread of positioning bolt (3), fixed plate (1) middle part fixedly connected with " z " shape crank (4), use the utility model discloses oil field sealing cap drawer, to oil pipe sealing cap and designing, the process of not only choosing is laborsaving, can not damage sealing cap moreover specially, effectively avoids sand and soil to get into oil pipe simultaneously, is favorable to keeping oil pipe operational environment.

Authentication method for wireless netted network based on WAPI

An authentication method based on WAPI wireless mesh network performs certificate authentication among site, MPP and authentication server, or MAP, MPP and authentication server, and site, MAP and authentication server, establishes sharing key between site and MPP or MAP and MPP, and site and MAP. The invention integrates the WAPI and wireless mesh network; authentication server performs integral and centralized management; site or MAP, MPP and authentication server can complete certificated authentication process through ternary authentication process, establish sharing key, thereby completing data communication according to the sharing key and implementing safety of communication course. The invention encrypts or deciphers only at site or MAP and gateway MPP, does not authenticate MP node; the time delay of transmission is little and authentication speed is fast.

Satellite-borne computer software self-recovery hardware system

The invention relates to a self-recovery hardware system for satellite-borne computer software. The method comprises the following steps: deploying in a spaceborne computer, and presetting a spaceborne computer software strategy; according to watchdog circuit starting time and dog feeding signal time set by the delay time starting circuit, a periodic dog feeding signal sent by satellite-borne computer software and received by a hardware watchdog circuit is determined, and a time judgment circuit is connected with a satellite-borne computer reset circuit to output a satellite-borne computer software loading or resetting signal; according to the hardware register circuit, the received high-level signals are subjected to low-level signal conversion and high-level signal quantity statistics, and a low-level signal or a zero clearing signal of the hardware register circuit is output through connection of a numerical value judgment circuit and a level conversion circuit; and the power-off restart ...