CN1895902A - Assembled seal - Google Patents
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- CN1895902A CN1895902A CN 200510083094 CN200510083094A CN1895902A CN 1895902 A CN1895902 A CN 1895902A CN 200510083094 CN200510083094 CN 200510083094 CN 200510083094 A CN200510083094 A CN 200510083094A CN 1895902 A CN1895902 A CN 1895902A
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Abstract
A combined seal is composed of an electronic seal consisting of seal circuit and data interface connected to computer, and a physical seal consisting of front seal surface and main body. Said electronic seal is fixed in said physical seal.
Description
Technical field
The present invention relates to a kind of seal, the assembled seal that particularly a kind of E-seal and seal in kind are integrated.
Background technology
Along with science and technology development, computer technology, electronics memory technology and network technology have caused the generation of e-file.E-file is to produce text, figure by means of computer technology, and the electronics memory technology is put down in writing, and is a kind of novel document form that medium transmits by means of electric network.
E-file is that a kind of and tangible media files has different in essence files in generation, existence, transmission in form.Described e-file is to utilize the input unit on the computer to produce down with the program software control that includes standard letter, both may be displayed on the computer screen, can be converted to paper document by PRN device again.Any people who is familiar with program software can utilize standard letter or duplication technology layout, produce the e-file of standard, standard on different computers, and can leave no trace through the e-file that duplicates, revised; Described e-file can leave in the electronic memory, and jumbo electronic memory is deposited considerable file.E-file can be by means of characteristics such as electric network high-speed transfer, and the e-file layout, make automation, storage with no paper, transmit and turn to growing ecommerce, E-Government and official document thereof at a high speed and lay the foundation.
Under network office environment now, the official document transmission efficiency has obtained significant raising.Because network opening, safety issue also becomes increasingly conspicuous in easy to use, almost anyly can intercept and capture per capita, revise the network official document, and everything illegal operation is all carried out among unconsciously, promptly intercept and capture, revise the back official document and can't perceive in the ordinary course of things, its harm is beyond measure.So can not rant out, there is not safety assurance, just there is not office automation.
The official document contact, it is essential to affix one's seal.Because of bright red great seal representative capacity always, be power and authority's symbol.From ancient times to the present, to all strictly nurses of chop, be in safe keeping.Modern society has continued traditional method, and the official document only side of stamping an offical seal has formal legal effect.
Traditional official seal adopts engraving making such as rubber-stamp, print to the papery official document with manual mode when adding a cover, this mode obviously can't satisfy exchanging of cooperation and information between socialization along with economic activity, internationalization, all trades and professions and networking now, the requirement of teleworking automation fully.For the demand that adapts to society and the new model of office automation thereof, the notion of E-seal has been proposed, with the needs of the digital office that cooperates official document.And, guarantee that it is by safety, use legally because above-mentioned all potential safety hazards of mentioning must be encrypted E-seal.
Application number is 00114155.4 and is called that the patent application of " making of computer network seal, use, network validation and monitoring and managing method " discloses the programming that has realized E-seal and made, a kind of method of selecting medium, has disclosed the using method of E-seal and can use bar code, numeral, title, password etc. that the content of signature is encrypted.
Application number is 99123276.3 and is called to disclose the content that the content that embeds in the E-seal can include literal, figure and watermark literal, figure and the password of seal in the patent application of " digital sign or electron seal identification system and identification mark management sequence ".
The method of the disclosed E-seal of above-mentioned document has been described and has been utilized literal, figure, password combination to become a kind of fixing seal graphics, but this fixing seal graphics and the relation between the seal in kind are not described, seal in kind separates with E-seal, there is defective for management, and also do not possess uniqueness for a legal person or the seal held in one's own possession.
In application number is 02139408.3 patent application following feature being disclosed: is provided with the standard dynamic clock in electronic seal system, makes E-seal have time of signature sign accurately; In electronic seal system, be provided with the accumulation parameter with corresponding signature number of times of time of signature, E-seal is had and time of signature corresponding auto arrangement sequence number sign; The password of electronic seal system, ciphertext are utilized time of signature parameter that generate automatically, dynamic and are arranged the sequence number parameter and obtain through cryptographic calculation in conjunction with the private key password.But be not disclosed in the following message of preserving each seal in the electronic seal system: time parameter with an official seal affixed and by the information such as title of e-file with an official seal affixed.
A kind of digital electric seal of software and hardware combining in being 03218783.1 patent application, application number is disclosed, disclose following content, comprise the single chip microcomputer of having expanded data-interface, the dynamic real-time clock, the randomizer that constitutes by software, the memory of obliterated data not after the power down, data-interface is connected to the PC computer, the operation that the seal program software realization that cooperates digital seal to control software and PC computer is signed seal to e-file, computer drivers software flow pattern (referring to accompanying drawing 6) and controlled by single chip microprocessor software flow pattern (referring to accompanying drawing 7) are disclosed in this document, above-mentioned two flow chart description the encryption of e-file and the overall process of affixing one's seal, just no longer carry out careful description here at above-mentioned flow chart.
At present, the safety issue that solves the official document that transmits between ecommerce, E-Government and all departments thereof mainly adopts following three kinds of schemes:
A kind of is exactly traditional seal in kind or the E-seal that contains the seal circuit.The number of times of affixing one's seal of described seal in kind is uncontrollable, special financially special seal or provide the official seal of secret official document, must have the special messenger that this take care of, deny etc. in order to avoid abuse seal or malice.
Another is that the safe handling mode to E-seal is that secret operation mode in backstage is carried out, promptly import the seal that official document need add a cover and finish security package on the backstage, its process is invisible fully, the position adjustment in advance of affixing one's seal is located, the effect of affixing one's seal has only the printing function that provides by correspondence to understand, and official document template is had stronger requirement, also be conditional with the maximum of a official document number of affixing one's seal, and the number of times of affixing one's seal is also uncontrollable.
Another is that electric network safety certification mechanism is set, be that the user is in digital certificate institute registration electronic security(ELSEC) certificate and digital signature, and information and file published on the electric network server of certification authority, need inquire about the webserver of digital certificate mechanism, operation such as file encryption and deciphering, need certain technical foundation in the use, can feel inconvenience for the people who does not possess the computer operation ability, and if each transaction all will be by the webserver inquiry of certification authority, authentication, then the network inquiry of payment authentication mechanism takes, certification fee, expenses such as credit underwriting expense increase, and have strengthened transaction cost.
Described electronic security(ELSEC) certificate and digital signature are signed e-file, though improve to some extent than of the signature of traditional seal in kind to paper document, be that described electronic security(ELSEC) certificate and digital signature are by numerical ciphers, rely on the webserver of certification authority to carry out authenticating user identification, a kind of pattern that e-file is encrypted, deciphered, carries out information transmission and business transaction by electric network.Though improved the security of network trading, but, there is certain risk when using electronic security(ELSEC) certificate and digital signature to carry out network trading, after the webserver of certification authority is under attack, or when breaking down, the inquiry of electronic security(ELSEC) certificate and digital signature, verification process will be hindered, and can not normally use, certification authority and user will suffer a loss, and traditional seal in kind does not then have this worry.
As the above analysis, there is following shortcoming in prior art: the 1) seal graphics of seal in kind and the E-seal strict conformance of failing does not possess uniqueness for a legal person or the seal held in one's own possession; 2) by being set, network security mechanism protects the security in transmission course of e-file or official document, though played certain effect, but also increased commercial exchange cost simultaneously, can also tell described electronic security(ELSEC) certificate and digital signature can not be equal to a seal on the practical significance from naked eyes simultaneously, also not reach the visual effect of traditional seal signature paper document in the process of signing for file; 3) in existing E-seal, can not inquire about the number of times that seal has been affixed one's seal, and the relevant information of the file of having affixed one's seal accordingly, can not prevent effectively that the seal holder from abusing seal or malice and problem such as denying; 4) traditional seal and E-seal can not unite two into one, and are not easy to portably use; 5) E-seal is as the representative of right and obligation approval, and such as the contract chapter of company, representative company is to come keeping and storage by unique physical medium to the approval of contract, this be the tradition seal that separates can't be obtained.
Summary of the invention
The technical problem that the present invention solves provides a kind of assembled seal, and E-seal and seal in kind are united two into one, and is easy to use and have uniqueness, the security of raising seal, and controllability prevents that the seal holder from abusing seal or malice and problem such as denying.Be achieved by the following scheme purpose of the present invention:
The invention provides a kind of assembled seal, it is characterized in that, comprise E-seal device and the seal in kind of realizing the E-seal function, described E-seal device comprises that the seal circuit is connected the data-interface of computer with coupled being used to; Described seal in kind comprises the face of affixing one's seal and chapter body, and the face of affixing one's seal is positioned at an end of chapter body, and described E-seal device is connected on the chapter body of described seal in kind.
Described data-interface can be given prominence to the chapter body, also can be positioned at Zhang Tizhong.
End relative with the face of affixing one's seal at described chapter body is provided with hole slot, and the part of described E-seal device is arranged in described hole slot.
Described E-seal device is connected on the described hole slot by gluing.
Be provided with cavity at Zhang Tizhong, described hole slot is connected with described cavity, and the part of described E-seal device is arranged in described cavity, and the diameter of cavity is greater than the diameter of hole slot, at boss of contact-making surface formation of cavity and hole slot.
Described E-seal device carries grab, and described grab is in conjunction with the fixing described E-seal device of described boss.
Described seal circuit comprises the counter of affixing one's seal, whenever finishes once and affixes one's seal, and the counter of having affixed one's seal adds one automatically.
Described seal in kind also comprises the data-interface cover of combining closely with the chapter body that is used for the protected data interface.
Described data-interface cover and chapter body can be fixed by screw thread, also can directly coincide with the projection on the chapter body.
Described data-interface is USB, serial communication interface, parallel communication mouth, SCSI, bluetooth, infrared, RFID, WIFI, WAPI, GPRS, CDMA or SMS.
Described seal circuit is a chip.
Compared with prior art; the present invention has following beneficial effect: by E-seal of the present invention, because the seal circuit chip is arranged on chapter body inside, promptly plays protection seal circuit chip and be not damaged; also make its outward appearance better appearance, also be convenient for carrying simultaneously.Can affix one's seal whenever and wherever possible and sign by E-seal of the present invention, prevent that effectively seal from abusing and malice is denied.Thereby brought into play the pursuing property of the advanced and number of times of affixing one's seal of the long-range function of affixing one's seal of E-seal.In addition, described E-seal is as the representative of right and obligation approval, and such as the contract chapter of company, representative company is to the approval of contract, be have unique physical medium to come keeping and storage, E-seal and seal in kind are linked together just can be addressed this problem.This be the tradition seal that separates can't be obtained.
Description of drawings
Fig. 1 is the three-dimensional structure diagram of a kind of assembled seal of the present invention;
Fig. 2 is the three-dimensional structure diagram of the another kind of assembled seal of the present invention;
Fig. 3 is the perspective view of assembled seal structure of the present invention;
Fig. 4 is the bottom view of embodiment of the invention cavity and hole slot;
Fig. 5 is the flow chart of the invention process seal process;
Fig. 6 is a prior art computer drivers software flow pattern;
Fig. 7 is a prior art controlled by single chip microprocessor software flow pattern.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing.
Fig. 1 is the perspective view of assembled seal of the present invention.Described assembled seal comprises seal in kind and E-seal device, seal in kind comprises the face of affixing one's seal 11, hole slot 12, chapter body 13, the cavity 18 that is provided with, data-interface cover 16 and the projection 19 of holding with the corresponding Zhang Tiyi of being formed on of data-interface cover on the chapter body, affix one's seal face 11 for circular, the residing plane of face of will affixing one's seal is defined as horizontal plane, and chapter body 13 is circular cylinder for the horizontal cross-section; The E-seal device is included in data-interface 15 and the seal circuit 20 of other end setting and the grab 17 that is used for fixing of one end setting, and described data-interface 15 is connected with seal circuit 20, and the seal circuit is a chip here.Described hole slot 12 is arranged on an end relative with the face of affixing one's seal of chapter body 13, and join with the cavity of chapter body 13 inside, the diameter of described hole slot 12 is less than the diameter of cavity 18, at hole slot 12 annular boss 5 of junction formation with cavity 18, E-seal device one end is inserted in the described cavity by hole slot, fix by grab that carries on the E-seal device and described boss, and an end that is provided with data-interface 15 protrudes hole slot 12, described data-interface is used for being connected with computer, realizes the signature of E-seal.When grab hooked boss 5, the bottom of E-seal device closely contacted near the bottom of cavity or with the bottom of cavity.Described data-interface cover 16 and described protruding 19 tight connectings are used for protected data interface 15, and in a preferred embodiment, described data-interface cover 16 and chapter body be by being threaded, data-interface cover and chapter body any can be as nut or screw.
Exemplified the fixing method of an E-seal device and seal in kind above, but the present invention is not limited on the said method, the E-seal device also can be fixed on the surface of the chapter body of seal in kind, adopt plastic packaging or gluingly all can, can adopt equally and can movable relatively mode fix, as be connected through the hinge or connect by chain, as long as both are connected together, just can reach easy to use and purpose with uniqueness.
The face of affixing one's seal is square in the another kind of assembled seal of describing among Fig. 2, and chapter body 13 is square cuboid for the horizontal cross-section.
Fig. 3 is the perspective view of assembled seal structure of the present invention.The shape of hole slot 12 can be done corresponding the variation with the shape of E-seal device.For example: when the E-seal device be shaped as cuboid the time, the shape of hole slot also should be cuboid mutually, the shape of cavity can be the rectangle bigger than the size of hole slot, also can be big circular or other shape of size than hole slot; So long as meet the following conditions all can: the diameter of cavity is bigger than the diameter of hole slot, and forms annular boss 5 in both joints, and the size of cavity and hole slot can be held the E-seal device.Accompanying drawing 4 is the cavity under a kind of situation and the bottom view of dead slot, Reference numeral 12 expression hole slots wherein, and Reference numeral 5 expression boss, the wall of Reference numeral 42 expression hole slots, the wall of Reference numeral 41 expression cavitys, hole slot and cavity are cylindrical shape here; The shape of hole slot can be that the horizontal cross-section is the rectangular shape of rectangle, also can be that the cross section is oval cylindroid shape, or other shape; The shape of cavity can be cylindrical, rectangular shape, cylindroid shape, or Else Rule and irregularly shaped, and the shape of hole slot and cavity is that prerequisite can be done corresponding variation with well secured E-seal device.Grab 17 on the E-seal device is rubber-like and the hook grab towards the outside of E-seal device, can have one or more, when being inserted in cavity by hole slot the E-seal device, grab outwards stretches at the boss place, and the E-seal device is fixed on the chapter body.The E-seal device is except taking the said fixing method, can also fix by the mode that adopts gluing company, can there be cavity at Zhang Tizhong, have only hole slot, the E-seal device is directly sticked with glue be connected in the hole slot 12, and coincide closely with the bottom of hole slot 12, data-interface can be given prominence to also can be in the inside of hole slot in the outside of hole slot, only otherwise influence being connected of data-interface and computer interface, as in the inside of hole slot, can connect by the extended line of data-interface.When being cylindrical, can screw thread be set at the E-seal device, hole slot is arranged to the nut of end sealing on the surface of E-seal device, like this can be with the fixing E-seal device of the mode of screw thread.
Described data-interface 15 is specific data-interface type, and the data-interface that connects in wired mode has data-interfaces such as USB, serial communication interface, parallel communication mouth and SCSI; The data-interface that connects with wireless mode has bluetooth, infrared, the RFID (abbreviation of Radio Frequency Identification, be RF identification), WIFI (full name Wireless Fidelity, claim the 802.11b standard again), WAPI (WAPI), the GPRS (abbreviation of General Packet Radio Service, GPRS), CDMA and SMS data-interfaces such as (Short Messaging Service, Short Message Service).
The circuit hardware structure of seal circuit 20 can be identical with the circuit structure of E-seal of the prior art, can adopt corresponding software to achieve the goal for the function that is different from E-seal of the prior art, counter just can be realized by software as affixing one's seal, the number of times of storing in each access to memory of affixing one's seal, add one then, become the current number of times of affixing one's seal, be stored in the memory at last; The data that are stored in the seal circuit 20 must be carried out access by special-purpose software.Store the E-seal information data consistent in the described seal circuit 20, and seal owner in kind or the electronic signature that has a tissue generate data with seal graphics in kind.These information can't be replicated by in the one-time write circuit chip, and this can achieve the goal by the read only attribute that these information are set.Also comprise the title that logically has correlation with the information that face showed of affixing one's seal in the described E-seal information data,, give an example as finance seal, occurrences in human life chapter etc., as * * * the Corporate Finance special seal, then relative name is called " finance seal ".Simultaneously, described E-seal information data also comprises date of formation, the use term of validity, usefulness Zhang Jilu and the system chapter person's of E-seal electronic signature information.And, except that with just not revising again after the data write-once the Zhang Jilu, seal signature each time all can produce automatically uses Zhang Jilu, be stored in the memory in the seal circuit, describedly comprise that with Zhang Jilu the information of the title (or having the theme of representing e-file) of the e-file of having affixed one's seal, the time of affixing one's seal and which time affix one's seal etc.
5 the course of work (is that example describes with the USB interface) that the invention process E-seals are affixed one's seal is described with reference to the accompanying drawings, comprises the following steps:
1) seal circuit 20 is connected with computer by USB interface, patches the seal circuit 20 on the computer USB interface, provides working power to carry out initialization by the computer USB interface and starts, set up communication link with computer;
2) computer will confirm that the information of identity is input to seal circuit 20 by USB interface, carries out identity validation;
3) if input information is invalid, the process of affixing one's seal stops;
4) if input information is effective, computer continues the seal parameter is input to the seal circuit;
5) the seal circuit will be according to the parameter that receives, the assembled seal information data, and the seal information data that is combined into sent to computer by USB interface;
6) computer is finished the literal in the seal information data, the reduction of figure and the encryption of file, and with an official seal affixed;
7) computer extracts the heading message of e-file, and this information is sent to seal circuit 20;
8) the seal circuit receives described heading message, and it is stored in the database in the memory, and the counter of affixing one's seal in the seal circuit adds one automatically, and the number of times of will affixing one's seal, the time of affixing one's seal are stored in the database, constitutes and uses Zhang Jilu;
By above-mentioned operating process, finish from authentication, seal information reverting, file encryption to an official seal affixed, storage at last wherein, can utilize existing related techniques in the reduction of literal, figure, the encryption of e-file and the process of affixing one's seal with the overall process of Zhang Jilu.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (16)
1. an assembled seal is characterized in that, comprises E-seal device and the seal in kind of realizing the E-seal function, and described E-seal device comprises that the seal circuit is connected the data-interface of computer with coupled being used to; Described seal in kind comprises the face of affixing one's seal and chapter body, and the face of affixing one's seal is positioned at an end of chapter body, and described E-seal device is connected on the chapter body of described seal in kind.
2. assembled seal according to claim 1 is characterized in that, is provided with hole slot on described chapter body, and all or part of of described E-seal device is arranged in described hole slot, and an end of data-interface outwardly.
3. assembled seal according to claim 2 is characterized in that, described E-seal device is connected on the described hole slot by gluing.
4. assembled seal according to claim 3 is characterized in that, described hole slot is positioned at an end relative with the face of affixing one's seal of chapter body.
5. assembled seal according to claim 2 is characterized in that, is provided with cavity at Zhang Tizhong, and described hole slot is connected with described cavity, and the diameter of cavity is greater than the diameter of hole slot, at boss of contact-making surface formation of cavity and hole slot.
6. assembled seal according to claim 5 is characterized in that, described E-seal device is provided with grab, and described grab is in conjunction with the fixing described E-seal device of described boss.
7. assembled seal according to claim 6 is characterized in that, described hole slot is positioned at an end relative with the face of affixing one's seal of chapter body.
8. according to any assembled seal in the claim 1 to 7, it is characterized in that described seal circuit comprises the counter of affixing one's seal, whenever finishes once and affixes one's seal, the counter of having affixed one's seal adds one automatically.
9. assembled seal according to claim 8 is characterized in that, described seal in kind also comprises the data-interface cover of combining closely with the chapter body that is used for the protected data interface.
10. according to any assembled seal in the claim 1 to 7, it is characterized in that described seal in kind also comprises the data-interface cover of combining closely with the chapter body that is used for the protected data interface.
11. assembled seal according to claim 10 is characterized in that, described data-interface cover and chapter body adopt screw thread to fix.
12. assembled seal according to claim 10 is characterized in that, the end relative of described chapter body with the face of affixing one's seal have can with the shape of described data-interface cover tight connecting.
13., it is characterized in that described data-interface is USB, serial communication interface, parallel communication mouth, SCSI, bluetooth, infrared, RFID, WIFI, WAPI, GPRS, CDMA or SMS according to any assembled seal in the claim 1 to 7.
14., it is characterized in that described seal circuit is a chip according to any assembled seal in the claim 1 to 7.
15. assembled seal according to claim 9 is characterized in that, described seal circuit is a chip.
16. assembled seal according to claim 13 is characterized in that, described seal circuit is a chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100830944A CN100430236C (en) | 2005-07-14 | 2005-07-14 | Assembled seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100830944A CN100430236C (en) | 2005-07-14 | 2005-07-14 | Assembled seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1895902A true CN1895902A (en) | 2007-01-17 |
| CN100430236C CN100430236C (en) | 2008-11-05 |
Family
ID=37608602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100830944A Active CN100430236C (en) | 2005-07-14 | 2005-07-14 | Assembled seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100430236C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458845C (en) * | 2007-02-13 | 2009-02-04 | 江苏国盾科技实业有限责任公司 | Production of electronic-physical seal and its synthetic seal |
| CN101017544B (en) * | 2007-02-15 | 2010-12-01 | 江苏国盾科技实业有限责任公司 | Conflated seal affix authentication method having electronic seal digital certification |
| CN103085511A (en) * | 2013-01-30 | 2013-05-08 | 北京科富兴科技有限公司 | Seal |
| CN103171315A (en) * | 2013-02-07 | 2013-06-26 | 江苏意源科技有限公司 | Combined type secure electronic seal |
| CN103268206A (en) * | 2013-04-27 | 2013-08-28 | 浙江诸暨奇创电子科技有限公司 | Seal equipment based on printing technology |
| CN108819514A (en) * | 2018-06-08 | 2018-11-16 | 深圳白鹤印章科技股份有限公司 | Intelligent seal with CA authentication |
| CN109760434A (en) * | 2019-02-01 | 2019-05-17 | 李凌寒 | A kind of accounting Special safety seal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106560A (en) * | 2013-01-30 | 2013-05-15 | 北京科富兴科技有限公司 | Anti-fake management method of seal of internet of things |
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| JPS61148657U (en) * | 1985-03-06 | 1986-09-13 | ||
| CN2185677Y (en) * | 1994-04-05 | 1994-12-21 | 张小明 | Counting seal |
| JPH09305729A (en) * | 1996-05-16 | 1997-11-28 | Mitsubishi Electric Corp | Stamp containing electronic person's identity confirmation function and using method of the stamp |
| JP3754565B2 (en) * | 1998-10-30 | 2006-03-15 | 株式会社日立製作所 | Electronic seal mark authentication system |
| CN1267025A (en) * | 2000-03-23 | 2000-09-20 | 李伟 | Method for creating, using, validating and monitoring computer network signature |
| CN1412699A (en) * | 2002-09-09 | 2003-04-23 | 齐宇庆 | Method for designing electronic seal and its device |
| CN2803709Y (en) * | 2005-07-14 | 2006-08-09 | 北京书生国际信息技术有限公司 | Combined seal |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458845C (en) * | 2007-02-13 | 2009-02-04 | 江苏国盾科技实业有限责任公司 | Production of electronic-physical seal and its synthetic seal |
| CN101017544B (en) * | 2007-02-15 | 2010-12-01 | 江苏国盾科技实业有限责任公司 | Conflated seal affix authentication method having electronic seal digital certification |
| CN103085511A (en) * | 2013-01-30 | 2013-05-08 | 北京科富兴科技有限公司 | Seal |
| CN103085511B (en) * | 2013-01-30 | 2015-08-05 | 北京科富兴科技有限公司 | A kind of seal |
| CN103171315A (en) * | 2013-02-07 | 2013-06-26 | 江苏意源科技有限公司 | Combined type secure electronic seal |
| CN103268206A (en) * | 2013-04-27 | 2013-08-28 | 浙江诸暨奇创电子科技有限公司 | Seal equipment based on printing technology |
| CN103268206B (en) * | 2013-04-27 | 2017-07-11 | 浙江诸暨奇创电子科技有限公司 | A kind of seal equipment based on printing technique |
| CN108819514A (en) * | 2018-06-08 | 2018-11-16 | 深圳白鹤印章科技股份有限公司 | Intelligent seal with CA authentication |
| CN109760434A (en) * | 2019-02-01 | 2019-05-17 | 李凌寒 | A kind of accounting Special safety seal |
| CN109760434B (en) * | 2019-02-01 | 2020-08-28 | 李凌寒 | Special safety seal of accounting |
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| CN100430236C (en) | 2008-11-05 |
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