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46results about How to "Anti-counterfeiting realization" patented technology

Anti-fake label with electronic grains

The present invention relates to one kind of product anti-fake label made of material with some texture characteristics. The randomly formed figure, color and amount in the marker are used as the anti-fake information and coded as the anti-fake data stored in the data base of computerized identification system while being printed in anti-fake marker. The consumer can chedk the figure and color inthe label via comparison with the code to verify the truth of the commodity and may also check the codes in the marker via comparison with those in computer data base to verify the truth of the commodity through modern communication means.
Owner:TIANJIAN ANTI FORGERY SCI & TECH

Laser anti-counterfeit marking method for product with complex profile

ActiveCN102785029AHas its own anti-counterfeiting effectAchieve independenceLaser beam welding apparatusMachining processComputer science
The invention relates to a laser anti-counterfeit marking method for a product with a complex profile. An anti-counterfeit mark pattern is designed in a specific anti-counterfeit zone, a vector pattern of an anti-counterfeit mark is split and a process reference point is selected by a specific splitting algorithm, short segments are scanned and machined according to specific process parameters, and finally the anti-counterfeit mark pattern can be marked on the surface of the product with the complex profile. Since position information, splitting information and machining process parameter information are carried in the anti-counterfeit mark pattern, counterfeiters need to obtain the accurate curved surface model of the complete profile, the accurate contour and position of the anti-counterfeit marking zone, the specific algorithm for splitting of the vector pattern of the anti-counterfeit mark, the specific algorithm for selection of the process reference point, laser process parameters of the short segments and the like for counterfeiting in addition to a laser machining device, all the information is key to counterfeiting, and thus technical difficulties in counterfeiting are improved. Therefore, the laser anti-counterfeit marking method has good anti-counterfeiting effects.
Owner:WENZHOU UNIVERSITY

Fiber anticounterfeit paper and manufacture method thereof

The invention is fiber anti-false paper and the manufacturing method, it refers to anti-false paper which has fiber anti-false character and the producingm ethod. The character lies in that there are infrared fibver and magnetism fiber on the anti-false paper. The method is: the two fibers are put into the paper according to proper proportion, forms approximate color paper. It uses the infrared fiber and magnetism fiber sensor to test the signal of the two fibers, and it carries the data information into testing equipment, it is tested with data information of number, bar code or flow number in sensor, so it can realize information anti-false.
Owner:CHINA BANKNOTE PRINTING & MINTING

Radio frequency identification technology and digital watermark-based anti-counterfeiting authentication device and method

The invention discloses a radio frequency identification technology and digital watermark-based anti-counterfeiting authentication device and a radio frequency identification technology and digital watermark-based anti-counterfeiting authentication method, which are used for authenticating the truth or falsity of a valuable consumable with a label and a digital watermarking label. The device consists of an input module, a radio frequency identification (RFID) read / write module, an image acquisition module, a data processing module, a control module, a storage module, an output module and a communication module, wherein the RFID read / write module reads data in a radio frequency identification electronic label; the image acquisition module and the data processing module extract watermarking information embedded in a watermarking information pattern; and the control module of the device performs comprehensive analytical processing, and the function of judging the truth or falsity of a product is realized.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Method and device for anti-counterfeiting of artwork based on block chain

The invention relates to a block chain-based artwork anti-counterfeiting method and device. The method comprises: preserving the information of a first artwork; acquiring image information of the second artwork; comparing the image information of the second artwork with the image information of the first artwork, and if the comparison result is consistent, verifying that the second artwork and thefirst artwork are the same artwork; otherwise, the second artwork and the first artwork are not the same artwork, and the verification fails. The invention completes the comparison and verification of the traded artwork and the seller's pre-sold traded artwork by uploading the image information of the traded artwork by the buyer user during the trading. The method can ensure that the artwork actually bought by the buyer is the artwork seen at the beginning in the process of the art transaction, and avoid the problem of being imitated and replaced in the process of the transaction, which is conducive to ensuring the economic interests of the buyer and the user. The method adopts the image attribute of the artwork itself to realize the anti-counterfeit of the artwork, and the anti-counterfeit is higher.
Owner:深圳市航成机械设备有限公司

Electronic grain anti-fake method

The present invention relates to one kind of product anti-fake method by utilizing the texture characteristics, such as shape, color, etc. of material and making anti-fake marker with the material. The randomly formed figure, color and amount in the marker are used as the anti-fake information, recorded, converted into code and stored in the data base of computerized identification system while being printed in anti-fake marker. The consumer can check the figure and color in the label via comparison with the code to verify the truth of the commodity and may also check the codes in the marker via comparison with those in computer data base to verity the truth of the commodity through modern communication means.
Owner:TIANJIAN ANTI FORGERY SCI & TECH

Intelligent counterfeiting bottle stopper

The invention relates to an intelligent counterfeiting bottle stopper which comprises a bottle stopper body and a radio frequency identification chip, wherein the chip is selected from chips with different working frequencies including low frequency, high frequency, ultrahigh frequency or microwave frequency range; and the radio frequency identification chip is encapsulated inside the bottle stopper body. The intelligent counterfeiting bottle stopper leads the information of wine to be stored in the bottle stopper, and utilizes radio frequency identification (RFID) technology to read the related information of the wine in the bottle stopper, thus leading the bottle stopper to become an identification carrier of the wine and having the intelligent counterfeiting function.
Owner:潘国平

Reflective membrane with anti-counterfeiting mark, manufacture method of reflective membrane and anti-counterfeiting license plate

The invention relates to the field of anti-counterfeiting marks, in particular to a reflective membrane with an anti-counterfeiting mark, a manufacture method of the reflective membrane and an anti-counterfeiting license plate. The manufacture method comprises the following step: printing the anti-counterfeiting mark on the reflective surface of the reflective membrane through a laser beam when the included angle between the laser beam and the reflective surface of the reflective membrane is plus or minus 1 to 60 degrees, wherein the power of the laser beam is 0.2 to 8 w, and the approaching speed of the laser beam is 0.06 to 1.5 m / s. The reflective membrane manufactured according to the manufacture method provided by the embodiment of the invention and the anti-counterfeiting license plate have high anti-counterfeiting functions, so that law-breakers cannot counterfeit the reflective membrane and the anti-counterfeiting license plate, the reflective membrane and the anti-counterfeiting license plate can be identified only through naked eyes without the need of matched reader-writers. Therefore, the popularization and application ranges are wide.
Owner:上海发钰实业有限公司

Time stamp anti-counterfeiting method and apparatus based on signature data chain

The invention discloses a time stamp anti-counterfeiting method and apparatus based on a signature data chain, for the purpose of anti-counterfeiting of a time stamp. The time stamp anti-counterfeiting method comprises the following steps: obtaining information data of an anti-counterfeiting time stamp, wherein the information data is request data of the anti-counterfeiting time stamp and a hash value of the request data, or the hash value of the request data; packaging the information data of all requests in a preset time period into a data block; and based on an automatically generated signature data chain, performing packaging signing on a data block which contains signature data of the last data block and all request anti-counterfeiting time stamps in the preset time period so as to realize anti-counterfeiting of the time stamp. By use of the technical scheme, all data or hash values with anti-counterfeiting demands are packaged into blocks according to time periods and current block data containing the last signature data is packaged and signed so that the anti-counterfeiting of the time stamp is realized. Besides, the method is simple, the cost is low, and the security is high.
Owner:李智虎

Document anti-counterfeiting generation and identification method, a printing driver and a document anti-counterfeiting system

The invention discloses a document anti-counterfeiting generation and identification method and a printing driver and system. The generation method comprises the following steps: (1) setting an anti-counterfeiting plaintext; (2) setting an encrypted image; (3) printing and outputting; the identification method comprises the following steps: (1) obtaining an encrypted image; (2) obtaining a decrypted image; (3) obtaining a graph in the decrypted image by using an image recognition algorithm; (4) data matching; wherein the document anti-counterfeiting printing driver comprises an anti-counterfeiting module, the document anti-counterfeiting system comprises a printing driver and an anti-counterfeiting module arranged in the printing driver, and the anti-counterfeiting module realizes documentanti-counterfeiting through the document anti-counterfeiting generation method. The method and the device are used for solving the problems that in the prior art, an anti-counterfeiting document embedded with anti-counterfeiting information is complex in manufacturing and printing and high in implementation difficulty, the risk that the document is tampered or damaged exists in the circulation process, the risk that the document is counterfeited by utilizing high-precision copying equipment, and the document cannot be protected after the anti-counterfeiting information is attacked or perceived.
Owner:NANJING FORESTRY UNIV

Internal laser writing method capable of being used for anti-counterfeiting judgment of commodities packaged by transparent materials

Disclosed is an internal laser writing method capable of being used for anti-counterfeiting judgment of commodities packaged by transparent materials. According to the method, a point cloud data file is generated by a selected pattern; the pointed cloud data file is lead in to form point cloud marking data software, the repetition frequency of a laser device is adjusted to range from 1500Hz to 1800Hz, the laser pulse width ranges from 50 micron seconds to 65 micro seconds, the laser power ranges from 532mw to 760mw, the focusing facula is 30 micro meters, the moving speed of a processing platform is 16000p / s, the scanning speed of a galvanometer is 3000bit / ms, and internal laser carving is conducted on the internal surfaces of materials. According to an anti-counterfeiting technology, markings are marked on the inner surfaces of the materials, and consumers can clearly see the anti-counterfeiting marks only after clearly identifying angles and marking patterns. The internal laser writing method effectively avoids the lawless behaviors that lawless persons reproduce adulterated wine after recycling wine bottles to deceive consumers, and is suitable for anti-counterfeiting judgment of commodities packaged by all kinds of transparent materials.
Owner:BEIJING UNIV OF TECH

Method for manufacturing titanium-nickel alloy anti-counterfeiting label carried with implicit information

InactiveCN103753139AReach the anti-counterfeiting functionSimple structureStampsStampingMemory effectX-ray
A method for manufacturing a titanium-nickel alloy anti-counterfeiting label carried with implicit information is that pit patterns are pressed on the surface of a titanium-nickel shape memory alloy material having the shape memory effect through a male die with anti-counterfeiting patterns, then the surface of the titanium-nickel shape memory alloy material provided with the pit patterns is subjected to mechanical polishing till pits on the titanium-nickel alloy surface disappear. Therefore, the pattern information implied in the material cannot be seen through naked eyes or microscopes, X-ray and other physical and chemical means by viewing from the appearance, and the anti-counterfeiting purpose is achieved. A titanium-nickel alloy anti-counterfeiting label sheet manufactured by means of the method can display the implicit information when being heated to be higher than Af, an anti-counterfeiting identification function is achieved, and the method is simple and reasonable, and the detection operation is convenient.
Owner:XI AN JIAOTONG UNIV

Internet security lock used for commodity counterfeiting prevention

An embodiments of the invention provides an internet security lock used for commodity counterfeiting prevention, and is used for realizing commodity counterfeiting prevention through locking corresponding commodities. Therefore, the internet security lock which is installed on a commodity, a commodity container, a commodity package or in the commodity package and used for locking the commodity and cooperating with a network anti-counterfeiting platform to achieve a commodity anti-counterfeiting purpose is provided by the invention. The internet security lock can comprise an entity anti-counterfeiting lock, a card anti-counterfeiting lock and a virtual anti-counterfeiting lock.
Owner:李建魁

Method for preparing bionic structural color and mechanical property double-response component regulated and controlled by magnetic field through multi-material direct-writing 3D printing and product

The invention discloses a method for preparing a magnetic field-regulated bionic structural color and mechanical property double-response component through multi-material direct-writing 3D printing and a product. The method comprises the following steps of: dispersing superparamagnetic nanoparticles in a non-volatile alcohol solvent to form a photonic crystal colloid mixed solution, mechanically stirring and mixing the photonic crystal colloid mixed solution with a rubber-like elastomer, and embedding photonic crystals into the rubber-like elastomer to form micro-emulsion drops, so as to obtain rubber-like elastomer composite printing slurry; using mineral oil-fumed silica nanoparticle suspension as a support, and using a biological printer to perform direct-writing 3D printing to obtain the magnetic field-regulated bionic structural color and mechanical property double-response component. By means of direct-writing 3D printing, components of different shapes can be formed and are not limited by templates; and double response is realized through external magnetic field regulation, and non-contact regulation can be realized. The preparation method is simple and convenient and low in cost; and the double-responsecomponent is long in structural color retention time and reusable, and has obvious advantages in information encryption and commodity anti-counterfeiting.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Color two-dimensional code anti-counterfeiting method based on support vector machine

The invention discloses a color two-dimensional code anti-counterfeiting method based on a support vector machine, and the method comprises the steps: firstly generating a color two-dimensional code containing a watermark, then collecting a color two-dimensional code image through employing an APP application program, carrying out the preprocessing, extracting texture and color combination features through employing a gray-gradient co-occurrence matrix method and a color space conversion method, finally, training the image data by using a support vector machine (SVM) algorithm to establish a model, and distinguishing the image data of the test set. The designed two-dimensional code anti-counterfeiting system can better distinguish the printed image and the copied image of the color two-dimensional code, and solves the anti-counterfeiting problem of the current two-dimensional code.
Owner:NANCHANG HANGKONG UNIVERSITY

Anti-counterfeit method by comparing product serial number with codes

The invention discloses an anti-counterfeit method by comparing a product serial number with codes. In the method, software is first developed to be installed in a computer to playing the function of retrieving two groups of codes formed by 3-100 from 6-200 character codes, the first group is serial numbers and the second is codes, and an independent identification combination is formed by combining a serial number and a code; the identification combination data is automatically stored in a database established by a manufacture factory through the software installed in the computer; and simultaneously the computer prints the identification combination on a product label via a printer, and prints an expandable coating to cover the identification combination; afterwards the label printed with the identification combination is glued with special glue on a product; and the product manufacture factory creates a nationwide query telephone number, when a consumer informs a query staff of the identification combination data, the genuineness of the inquired product can be known. The invention eradicates the possibility of counterfeiting an anti-counterfeit trademark by a counterfeiter, overcomes the defects of the prior anti-counterfeit methods, realizes anti-counterfeit of products actually, and is suitable for anti-counterfeit of various products.
Owner:习杨

Packaging box provided with camera shooting anti-counterfeiting device

The invention discloses a packaging box provided with a camera shooting anti-counterfeiting device. The packaging box comprises a box body and the camera shooting anti-counterfeiting device arranged in the box body. The camera shooting anti-counterfeiting device comprises a power source, an optoelectronic switch, a camera, a CPU module and a wireless transmission module. The optoelectronic switch is connected with the CPU module connected with the camera and the wireless transmission module. The wireless transmission module is in wireless connection with a remote control terminal. When being used and well loaded, the storing box is opened, the optoelectronic switch sends out a signal, the CPU module controls the camera to shoot pictures according to the sent signal, the shot pictures are sent to the remote control terminal through the wireless transmission module, the opening time and number of opening times of the storing box can be obtained remotely through the structural design, cargo fidelity is effectively guaranteed, the anti-counterfeiting function is achieved, and the economic benefits and the social benefits are extremely high.
Owner:JUZHONG TAIHE TIANJIN TECH DEV CO LTD

A rfid electronic tag with anti-counterfeiting function

The invention relates to the technical field of RFID electronic tags, and specifically discloses an RFID electronic tag with an anti-counterfeiting function, including a tag body and a traction strip, a first die-cutting line is provided between the label body and the traction strip; the label body is provided with The electronic tag chip, the main antenna and the anti-counterfeiting closed loop, the anti-counterfeiting closed loop includes the main coil fixed in the main body of the label and the traction coil extending into the traction strip; the traction coil and the main coil are respectively fixed by glue materials of different strengths, and So that when there is an external force to tear the surface material of the main body of the label and the top surface of the traction strip, the traction coil and the main coil are broken. The beneficial effect of the present invention is that the anti-counterfeiting closed loop uses part of the fragile antenna technology and adhesive layers of different strengths, so that the anti-counterfeiting closed loop cannot be repeatedly peeled off after being pasted on the surface of the object, thereby realizing the anti-counterfeiting of the product.
Owner:江苏科睿坦电子科技有限公司

Preparation method of calcium carbonate coated DNA-fluorescent dye composite nano gel dual anti-counterfeiting coating

The invention relates to a preparation method of a calcium carbonate coated DNA-fluorescent dye composite nano gel dual anti-counterfeiting coating. The preparation method comprises the following steps: firstly, mixing DNA and a fluorescent dye with a gelatin solution, adding a cross-linking agent for cross-linking curing to coat the DNA and the fluorescent dye in a gelatin nano gel grid, and thencoating the nano gel with calcium carbonate to obtain the calcium carbonate coated DNA-fluorescent dye composite nano gel, so that the DNA and the fluorescent dye are isolated from the outside, and the light-dark dual anti-counterfeiting coating with long storage period, stable structure and easy detection is prepared. Light anti-counterfeiting is realized by the fluorescent dye, and dark anti-counterfeiting is realized by the DNA. Due to the unknown property and expandability of the DNA, the DNA can be detected through polymerase-chain reaction amplification and electrophoresis analysis onlyby knowing the DNA sequence and designing a specific primer, and thus dark anti-counterfeiting is realized. According to the invention, the purposes of difficult matching and cooperative anti-counterfeiting are achieved, and the anti-counterfeiting effect and the counterfeiting difficulty are greatly increased.
Owner:湖南省南盾防伪技术实业有限公司

A method for processing an anti-forgery image with a multi-layer key set

The invention discloses a processing method for an anti-forgery image with a multi-layer key, which relates to the technical field of image anti-forgery. The method comprises the following steps: (1)pre-processing, and inputting an original image to obtain the size and input resolution of the original image; determining information of a key, the key comprising a first key, a second key and a third key, wherein the first key and the second key are numeric, the third key is a graph; (2) setting a first key, a second key and a third key; 3) generating an anti-counterfeit image to be output. Theinvention provides a multi-level key, at the same time, the multi-level encryption means and the detection means are used to improve the difficulty of forgery prevention and the information capacity is large.
Owner:HEFEI TONGYOU ELECTRONICS TECH CO LTD

Radio frequency identification technology and digital watermark-based anti-counterfeiting authentication device and method

The invention discloses a radio frequency identification technology and digital watermark-based anti-counterfeiting authentication device and a radio frequency identification technology and digital watermark-based anti-counterfeiting authentication method, which are used for authenticating the truth or falsity of a valuable consumable with a label and a digital watermarking label. The device consists of an input module, a radio frequency identification (RFID) read / write module, an image acquisition module, a data processing module, a control module, a storage module, an output module and a communication module, wherein the RFID read / write module reads data in a radio frequency identification electronic label; the image acquisition module and the data processing module extract watermarkinginformation embedded in a watermarking information pattern; and the control module of the device performs comprehensive analytical processing, and the function of judging the truth or falsity of a product is realized.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Electronic packaging material fake-prevention method and device

The invention relates to an electronic packaging material fake-prevention method and device. The electronic packaging material fake-prevention method comprises the steps of adding a conducting layer into a packaging material, adding circuit cut-off points into the conducting layer, and when the packaging material is opened, cutting off the circuit cut-off points to achieve fake prevention. By adding the conducting layer into the electronic packaging material and adding the circuit cut-off points into the conducting layer, after the electronic packaging material is damaged along the circuit cut-off points, the circuit state of the conducting layer is changed, and thus whether an original package is damaged or not can be detected through an electronic detecting method, and the purpose of fake prevention and dismantling prevention is achieved. Besides, when the electronic packaging material is installed and dismantled or squeezed and deformed violently, the damage degree can be judged byutilizing circuit performance (resistance) change caused by local separation or fracture of the conducting layer.
Owner:CHANGZHOU INST OF PRINTED ELECTRONICS IND CO LTD

An anti-counterfeit verification electronic blockade based on mobile phone read and write operations and its application method

The invention discloses an anti-counterfeit verification electronic blockade based on mobile phone reading and writing operations and its application method. The electronic blockade includes a male buckle containing a metal lock rod, an electronic component body and a female buckle, and an ear flap-shaped lock is connected to the upper end of the electronic component body. Rod detection mechanism, a U-shaped groove matching the lock hole of the locked object is formed between the lock rod detection mechanism and the electronic component body, and the upper lock rod detection mechanism of the lock hole corresponds to the lower electronic component body of the lock hole A first metal detection module and a second metal detection module are provided, and the metal locking rod of the male buckle passes through the location of the first metal detection module, the lock hole, the location of the second metal detection module, The body of the electronic component is then connected and fixed with the female buckle. The invention has the advantages of simple structure, low cost, timely feedback of logistics goods information, and guarantees goods safety.
Owner:包起帆 +1

Two-dimensional code anti-counterfeiting method based on error correction code domain

PendingCN113935447AAnti-counterfeiting realizationFeatures that will not affect normal readingRecord carriers used with machinesAlgorithmOriginal data
The invention discloses a two-dimensional code anti-counterfeiting method based on an error correction code domain. The two-dimensional code anti-counterfeiting method comprises the steps of generating an original two-dimensional code graph according to original data information; acquiring an error correction code domain pixel block; replacing or modifying a part of pixel blocks of the error correction code domain according to a preset mode, and generating an anti-counterfeiting two-dimensional code graph in combination with the information domain of the original two-dimensional code graph; and scanning the two-dimensional code graph of the product tagging area through a two-dimensional code scanning terminal, comparing the two-dimensional code graph with the anti-counterfeiting two-dimensional code graph serving as the anti-counterfeiting mark in information content and error correction code domain change records, and confirming whether the information is consistent or not. The method comprises using an error correction code domain, where the normal reading characteristic of the two-dimensional code cannot be influenced by changing the coding content; randomly replacing a part of pixel blocks in an error correction code domain to generate an anti-counterfeiting two-dimensional code graph; when the content of the two-dimensional code is acquired through an image, the two-dimensional code is compared with an anti-counterfeiting two-dimensional code serving as an anti-counterfeiting mark, whether the information is completely consistent or not is confirmed, and the anti-counterfeiting function of the two-dimensional code is achieved from the aspect of physical characteristics.
Owner:厦门领研科技有限公司

Bottle cap anti-counterfeiting device

The invention discloses a bottle cap anti-counterfeiting device. The bottle cap anti-counterfeiting device comprises a tube base, wherein the tube base is of a cylindrical shell; the upper surface ofthe tube base is provided with a convex arc surface; a through hole is formed in the middle of the arc surface of the tube base; the upper end of the tube base is provided with an upper cap; the lowersurface of the upper cap is provided with a concave arc surface matched with the convex arc surface of the tube base; and a soft plug is arranged on a position of the concave surface, opposite to thethrough hole, of the upper cap. The bottle cap anti-counterfeiting device has a simple structure; through cooperation of the upper cap and the tube base, sealing is realized; the upper cap is slid and turned along the tube base, so that the upper cap is convenient to open; due to the soft plug, the overall airtightness is ensured; through coordination of the upper ends of inserting plates and slots, locking of the tube base and the upper cap is realized; the inserting plates can be broken along the positions of lateral grooves, so that limitation is released; due to design of an internally-arranged locking piece, unartificial collision damage is avoided, and the use strength is improved; through rotation of a twist ring, control of the inserting plates is realized, opening is convenient,the upper cap is not rigidly limited after the upper ends of the inserting plates are broken, and use situations of the bottle cap can be effectively distinguished, so that counterfeit prevention is realized.
Owner:河北红帽子制盖有限公司

Anti-fake label with electronic grains

The present invention relates to one kind of product anti-fake label made of material with some texture characteristics. The randomly formed figure, color and amount in the marker are used as the anti-fake information and coded as the anti-fake data stored in the data base of computerized identification system while being printed in anti-fake marker. The consumer can chedk the figure and color inthe label via comparison with the code to verify the truth of the commodity and may also check the codes in the marker via comparison with those in computer data base to verify the truth of the commodity through modern communication means.
Owner:TIANJIAN ANTI FORGERY SCI & TECH

A time stamp anti-counterfeiting method and device based on signature data chain

The invention discloses a time stamp anti-counterfeiting method and apparatus based on a signature data chain, for the purpose of anti-counterfeiting of a time stamp. The time stamp anti-counterfeiting method comprises the following steps: obtaining information data of an anti-counterfeiting time stamp, wherein the information data is request data of the anti-counterfeiting time stamp and a hash value of the request data, or the hash value of the request data; packaging the information data of all requests in a preset time period into a data block; and based on an automatically generated signature data chain, performing packaging signing on a data block which contains signature data of the last data block and all request anti-counterfeiting time stamps in the preset time period so as to realize anti-counterfeiting of the time stamp. By use of the technical scheme, all data or hash values with anti-counterfeiting demands are packaged into blocks according to time periods and current block data containing the last signature data is packaged and signed so that the anti-counterfeiting of the time stamp is realized. Besides, the method is simple, the cost is low, and the security is high.
Owner:北京一方信安科技有限公司
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