36results about How to "Safety achieved" patented technology

The invention discloses a method and device for verifying an application program. The method for verifying the application program includes the steps of reading a timestamp signature certificate in an auxiliary folder of the application program, wherein the auxiliary folder is a folder where standard verification certificates of the application program are stored; extracting a verification sign in the timestamp signature certificate; calculating a verification sign of the application program; judging whether the verification sign in the timestamp signature certificate and the verification sign of the application program are the same or not; if the verification sign in the timestamp signature certificate and the verification sign of the application program are the same, enabling the application program to pass through verification to indicate that the application program is not modified. By means of the method and device, the problem that in the prior art, the safety performance of the application program can not be verified is solved, and then the effect of verifying the safety performance of the application program is achieved.

The invention particularly relates to a BGN type cryptograph decryption outsourcing scheme based on attributes. The scheme comprises steps that (1), a system parameter is set, and an encryption secret key is generated; (2), an access structure is selected by a sending side, message encryption is carried out, and cryptograph is generated; (3), a main secret key and the attributes are inputted by a receiving side, and a conversion secret key and a private secret key are outputted; (4), the cryptograph is sent by the sending side to a cloud end; (5), the conversion secret key is sent to the cloud end by the receiving side; (6), the cryptograph is converted by the cloud end through utilizing the conversion secret key to acquire a part of the cryptograph which is sent to the receiving side; and (7), the private secret key is utilized by the receiving side to decrypt the part of the cryptograph to acquire a message, and homomorphic computation operation for the cryptograph carried out by the cloud end is further comprised between the step (4) and the step (5). The scheme is advantaged in that not only can system decryption efficiency be improved, but also storage cost of a receiver is reduced; according to the cryptograph acquired according to the encryption method, a server is permitted to carry out multiple addition homomorphic operation and multiplication homomorphic operation for cryptograph data, on the condition that decryption difficulty does not increase, CPA safety of the user information is substantially improved.

The invention relates to a method for enabling a SIM card chip to be compatible with a logic encryption card. A non-contact logic encryption card function compatible circuit and a near-field communication interface are added in a SIM card chip with a CPU card circuit; the non-contact logic encryption card function compatible circuit and the CPU card circuit can jointly address and access a data memory; an operating system in the CPU card circuit is used to manage and detect data in the data memory, the data information processed by the non-contact logic encryption card function compatible circuit is checked and verified, and the application operation of the non-contact logic encryption card function compatible circuit is controlled. The SIM card chip can be compatible with the function of the non-contact logic encryption card, and the non-contact logic encryption card also has the function of the SIM card chip at the same time. The SIM card chip can not only solve the safety issue of the non-contact logic encryption card, but also allow the non-contact logic encryption card to be seamlessly transitted to the near-field communication application of the SIM card chip on the basis of maintaining the original function.

The invention relates to a ground guiding wire traveling crane. The ground guiding wire traveling crane comprises a base, a seat body which is arranged on the base and a guard rail which is matched with the seat body, wherein two sides of the base are respectively provided with a traveling device and a braking device; the traveling device and the braking device are respectively provided with a first traveling wheel and a second traveling wheel. The ground guiding wire traveling crane has the following beneficial effects that firstly, newly developed equipment capable of traveling on a ground guiding wire is adopted to maintain the ground guiding wire, and the ground guiding wire traveling crane is simple in structure, reliable to use and high in safety; secondly, the ground guiding wire traveling crane is provided with the traveling device for traveling driving and the braking device capable of braking in time at any time, so that the purposes of quick and stable traveling and safety are achieved, the traveling crane also can be braked at the same time, the operation is simple and reliable, and the work efficiency is improved; thirdly, the ground guiding wire traveling crane is provided with the guard rail, so that the personal safety reliability of maintenance personnel is improved, forward bending and falling are prevented, and the ground guiding wire traveling crane is also beneficial to force-borrowing operation of the maintenance personnel by abutting against the guard rail and is beneficial to reducing the working strength of the maintenance personnel.

The invention aims to provide a tool for bending process of a bending press to enlarge the length of a to-be-bent object without causing scratches. Technically, an angle formed between knifepoint split lines L 1 and L2 of blades in V-shaped bend moulds and an outside rhombus side of a cross section of the V-shaped bend mould is set to be larger than an angle between the knifepoint split lines L1 and L2 and an inside diamond of the cross section, and an angle between an internal edge of a processing block of the V-shaped bend mould on one side and the outside rhombus side of the cross section of the V-shaped bend mould on the other side is parallel to a chamfering part, the chamfering parts 16 C and 26C forming the internal edges of the rhombus side are shorter, the V-shaped bend mould is positioned in a center position among the knifepoint split line L1 of the V-shaped bend mould on one side, the knifepoint split line L2 of the V-shaped bend mould on the other side and the internal edges of the processing block, i.e. a position closer than the knifepoint split line L2 of the V-shaped bend mould on the other side.

The invention discloses a JavaScript data transmission encryption method, and belongs to the field of information security. According to the JavaScript data transmission encryption method disclosed bythe invention, a secret key service middleman concept is applied, a front end and a back end need to request and obtain a secret key to perform data encryption and decryption, the secret key serviceacts as a witness, thus further ensuring the security of data transmission and ensuring the data security, and finally, a secure data aggregation method is implemented.

A water-erosion-proof plugging agent and a preparation method and application thereof are disclosed, 35-40 parts by weight of water glass powder are added to 140-160 parts by weight of water, and stirred to hydrate to obtain a first water solution; 30-65 parts by weight of G-grade cement, 0.5-1 part by weight of sodium hydroxide and 0.1-0.5 part by weight of a cement reinforcing agent are mixed evenly to obtain a second mixture; 8-12 parts by weight of acrylate are added into 18-30 parts by weight of water, stirred and emulsified to obtain a third water solution; the second mixture is added into the first water solution, stirred evenly, then added into the third water solution, and mixed evenly to prepare the water-erosion-proof plugging agent. The water-erosion-proof plugging agent has good water-erosion-proof performance, and can block cracks of a water layer, at room temperature, initial setting time can be delayed by 25-60 minutes, the water-erosion-proof plugging agent can achive the effects of orthogonal instantaneous thickening and solidifying and sustainable increase of compressive strength, and the plugging effect of loss of large recurrent leakage is good.

The invention discloses a production technology of an environment-friendly type inorganic mineral-insulated, water-blocking and fireproof cable with a flexible jacket. The production technology is characterized in that a finished product is obtained through wire drawing, wire stranding, cable forming, and joint coating; in the wire drawing process, a deoxidized arsenic and phosphorous-free copper strip is adopted, and a conductive wire core is a flexible wire core; an insulation wire core of the formed cable is prepared from ethylene propylene diene monomer rubber, POE (polyolefin elastomer) elastomer, double-layer mica insulation material, paraffin oil, stabilizer, activator, coupler, anti-aging agent 4010A, rare earth, active kaolin and stearic acid, a wrapping tape adopts a modified polyvinyl chloride plastic bag, and a filling rope adopts a modified polypropylene tearing film rope; a joint water-blocking material is prepared from acrylic acid super absorbent fiber, polyvinyl chloride fiber and basic fiber according to the mass ratio of 2 to 1 to 1, and is coated onto the cable joint, so as to obtain the finished cable. The environment-friendly type inorganic mineral-insulated, water-blocking and fireproof cable with the flexible jacket has the advantages that the environment-friendly effect is realized, the flexibility is good, the insulation property, water-blocking property and fireproof property are realized, and the like; the cable can resist the high-temperature and high-humidity use environment of mines; the safety coefficient is high, and the popularizing value is higher.

The invention discloses a method and a device for recycling substrates by thermally cracking wasted printed circuit boards. Through the method and the device, combustion is avoided in a thermal cracking process and treatment safety is enhanced mainly by adding the introduction of water (vapor) in a reaction process and creating a completely-sealed low-pressure treatment environment; and by condensing and purifying organic gases to form reusable fuels or industrial chemicals, the treatment cost is reduced, recycling values are increased and a plurality of benefits, such as safe treatment devices and the like, can be created; therefore, the method and the device are of great industrial utilization value.

The invention relates to a ground guiding wire traveling crane. The ground guiding wire traveling crane comprises a base, a seat body which is arranged on the base and a guard rail which is matched with the seat body, wherein two sides of the base are respectively provided with a traveling device and a braking device; the traveling device and the braking device are respectively provided with a first traveling wheel and a second traveling wheel. The ground guiding wire traveling crane has the following beneficial effects that firstly, newly developed equipment capable of traveling on a ground guiding wire is adopted to maintain the ground guiding wire, and the ground guiding wire traveling crane is simple in structure, reliable to use and high in safety; secondly, the ground guiding wire traveling crane is provided with the traveling device for traveling driving and the braking device capable of braking in time at any time, so that the purposes of quick and stable traveling and safety are achieved, the traveling crane also can be braked at the same time, the operation is simple and reliable, and the work efficiency is improved; thirdly, the ground guiding wire traveling crane is provided with the guard rail, so that the personal safety reliability of maintenance personnel is improved, forward bending and falling are prevented, and the ground guiding wire traveling crane is also beneficial to force-borrowing operation of the maintenance personnel by abutting against the guard rail and is beneficial to reducing the working strength of the maintenance personnel.

A method for recovering base materials in classification by thermally cracking organic polymer mixtures and a device thereof; the device mainly comprises a reaction furnace, a reactant transmission fixing frame, a water-gas leading-in device, a reaction furnace waste gas outlet, a reaction furnace pressure control meter, a movable reaction frame, an automatic gas expansion device, a safe discharging device, a waste gas condensing and recovering device, a condensing compression tube, a condensing spraying device and a waste gas treating device, etc.; the method mainly uses molten inorganic salt to thermally crack organic polymers to separate base materials in the mixed high polymer materials easily, so as to classify easily, obtain the base materials with a large area (volume) and improve reuse capacity without breaking characters of the original base materials, moreover, the method can obtain the purposes of reducing energy and carbon consumption and preventing pollution, and providing a method for treating waste of organic polymers, a base materials classifying method and a device thereof.

The invention relates to the technical field of medicine, and discloses cefaclor composition particles and a preparation method thereof. The cefaclor composition particles disclosed by the invention are prepared from the following raw materials in parts by weight: 250 parts of cefaclor, 8 parts of bromhexine hydrochloride, 1,490 parts of sucrose, 20 parts of acesulfame, 2.5 parts of essence and 250 parts of sorbitol. The cefaclor composition particles disclosed by the invention comprise sorbitol which can be taken as a medicament dispersing agent for enhancing the medicament solubility and can be used for enhancing the antibacterial action of cefaclor. As proved by a test, the cefaclor composition particles disclosed by the invention have enhanced antibacterial action and high stability and can be widely applied to treatment of bacterial infection diseases such as respiratory tract infection, bone and joint infection, pelvic infection, abdominal infection and the like.

The invention relates to a method and a system for determining a working path based on radiation dosage of a nuclear island, belonging to the field of nuclear radiation monitoring. The method comprises the following steps of: field measuring a radiation value of the nuclear island and generating a three-dimensional radiation dosage zoning picture; defining a plurality of selective working paths of workers according to the three-dimensional radiation dosage zoning picture to obtain a plurality of three-dimensional working paths of the workers; calculating radiation dosage values corresponding to the various paths according to the plurality of three-dimensional working paths; and giving an optimal working path of the workers according to a worker radiation dosage management file and the radiation dosage values corresponding to the various paths obtained in the step 3. According to the method and the system disclosed by the invention, workers and paths can be determined rapidly and effectively so that the workers are protected safely; and the method has the advantages of high efficiency and direct viewing.

The invention provides a preservation method for stems of melons and fruits. The preservation method comprises the following steps: selecting the fresh melons and fruits without mechanical damages, plant diseases or insect pests, performing treatment on the stems of the melons and fruits by using a preservation solution, further airing, packaging, storing, transporting and the like, wherein the preservation solution contains 1-methylcyclopropene and thidiazuron, and 1-methylcyclopropene exists in the form of an inclusion compound of 1-methylcyclopropene. According to the method provided by the invention, a soaking or spraying way is adopted, the operation is simple, the method is suitable for sweet melons, watermelons, apples, pears, grapes and other varieties, the fresh color and luster and the plump state of the stems can be effectively kept, the quality of the melons and fruits is improved, and the storage period and the shelf life of the melons and fruits are prolonged.

The invention discloses a process for centralized recovery of coal gas and oil gas in the coal chemical industry, belonging to the field of coal chemical industry. Connect the tar tanks in the coal chemical industry, as well as the gasoline tanks for co-production of tar to produce gasoline and diesel, and the top breathing pipes of the diesel tanks with the gas pipelines in front of the benzene eluting device for gas purification to form a gas oil and gas pipeline network. Form a structure in which the gas pressure in each tank is consistent with that of the entire pipe network. With the change of the liquid's height and position in each tank, the gas, oil and gas are automatically filled or discharged to realize automatic compensation of gas pressure. The solvent washing oil inside the benzene eluting device has strong compatibility with organic substances such as volatile small molecular hydrocarbons and benzene in coal tar, gasoline and diesel oil, so it is absorbed, and the collection rate of volatiles can reach 99%. The device and method are simple and easy to implement, and have excellent cost advantages and environmental protection advantages.

The invention particularly relates to a BGN type cryptograph decryption outsourcing scheme based on attributes. The scheme comprises steps that (1), a system parameter is set, and an encryption secret key is generated; (2), an access structure is selected by a sending side, message encryption is carried out, and cryptograph is generated; (3), a main secret key and the attributes are inputted by a receiving side, and a conversion secret key and a private secret key are outputted; (4), the cryptograph is sent by the sending side to a cloud end; (5), the conversion secret key is sent to the cloud end by the receiving side; (6), the cryptograph is converted by the cloud end through utilizing the conversion secret key to acquire a part of the cryptograph which is sent to the receiving side; and (7), the private secret key is utilized by the receiving side to decrypt the part of the cryptograph to acquire a message, and homomorphic computation operation for the cryptograph carried out by the cloud end is further comprised between the step (4) and the step (5). The scheme is advantaged in that not only can system decryption efficiency be improved, but also storage cost of a receiver is reduced; according to the cryptograph acquired according to the encryption method, a server is permitted to carry out multiple addition homomorphic operation and multiplication homomorphic operation for cryptograph data, on the condition that decryption difficulty does not increase, CPA safety of the user information is substantially improved.

The invention discloses an automobile active anti-collision auxiliary brake device, which comprises an automobile shell. The rear end of the automobile shell is fixedly connected with a protection plate. The front end of the automobile shell is fixedly connected with an anti-vibration plate. A buffer pad is fixedly connected to the right side surface of the anti-vibration plate; the right side surface of the buffer pad is fixedly connected with a bumper; wheels are connected to the bottom face of the automobile shell in a rolling mode. Rotating shafts are in transmission connection with the interiors of the wheels; the right side surface of the wheel is in transmission connection with a right rotating ring; the right end of the rotating shaft is fixedly connected with a fixing ring; the end, close to the fixing ring, of the rotating shaft is slidably connected with a right outer ring plate; the left side face of the wheel is in transmission connection with a left rotating ring; the left end of the rotating shaft is fixedly connected with a left outer ring plate; and the end, close to the left outer ring plate, of the rotating shaft is fixedly connected with a brake ring. Accordingto the device, the collision force of an automobile during rear-end collision is reduced through the protection plate, and the active collision prevention performance of the automobile is improved through the anti-vibration plate, the buffer pad and the bumper.