CN105022967A - Device, system and method for identifying digital signature represented by signature identifier - Google Patents
Device, system and method for identifying digital signature represented by signature identifier Download PDFInfo
- Publication number
- CN105022967A CN105022967A CN201410175349.9A CN201410175349A CN105022967A CN 105022967 A CN105022967 A CN 105022967A CN 201410175349 A CN201410175349 A CN 201410175349A CN 105022967 A CN105022967 A CN 105022967A
- Authority
- CN
- China
- Prior art keywords
- identifier
- file
- signature
- signer
- digital signature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Storage Device Security (AREA)
Abstract
The present invention discloses a device, a system and a method for identifying a digital signature represented by a signature identifier. The digital signature is easily directly used and identified by the public through technical means of generating a provider signature identifier and a subscriber signature identifier correspondingly to a provider digital signature and a subscriber digital signature, and writing the provider signature identifier and the subscriber signature identifier into a checking file so that the checking file comprises the visual provider signature identifier and the subscriber signature identifier when being displayed; and the technical effect that the digital signature can be easily and conveniently used as traditionally signing and stamping on paper is realized.
Description
Technical field
The present invention relates to a kind of digital signature authentication device, system and method thereof, refer to that a kind of checking is by the device of the digital signature of signing represented by identifier, system and method thereof especially.
Background technology
Digital signature is also known as electronic signature, and in the method for a set of digital signature, the computing that definition two kinds is complementary usually, wherein a kind of computing can be signed on digital document, and another kind of running then can verify the signature on digital document.
Digital signature and the common entity signed and sealed (SS) write on paper are similar, but do not refer to signature is scanned into digital picture, or with the signature that touch pad obtains, certainly neither inscription.Compared with signing with the common entity write on paper, the integrality with the digital document of digital signature is easy to checking, because digital signature does not need seal on the perforation, the junction of the edges of two sheets of paper to sign, handwriting expert is not needed to carry out handwriting verification yet, as long as and namely can be verified by open public key cryptography running, therefore, digital signature also has non repudiation, non-repudiation.
But; because digital signature needs to use open public key cryptography to realize; therefore; digital signature is used to have technical threshold; and on paper, facilitate public use signed and sealed (SS) unlike tradition; in addition; digital signature can be hidden in the digital document after signature usually; the reader of digital document can only carry out identification digital signature by instrument software; that is; digital document through digital signature is also had no idea as tradition easy identification signed and sealed (SS) on paper, and the digital document after printing more cannot its digital signature of identification.
In sum, there is digital signature since known prior art is medium-term and long-term always and not easily directly used the problem with identification by masses, being therefore necessary the technological means proposing to improve, solving this problem.
Summary of the invention
Because prior art exists digital signature and not easily directly used the problem with identification, the present invention then to disclose a kind of checking by the device of the digital signature of signing represented by identifier, system and method thereof by masses, wherein:
Checking disclosed by the present invention is by the device of the digital signature of signing represented by identifier, at least comprise: Storage Media, check file in order to provide, check file and comprise and provide sign identifier, signer of people to sign identifier and the file identifier corresponding with source document; File obtains module, in order to obtain source document according to file identifier; Signature obtains module, obtains the signer digital signature (signature) corresponding with signer in order to identifier of signing according to signer; Signature verification module, in order to produce the file digest values (digest-value) of source document, and decipher (decrypt) signer digital signature to obtain signature digest value, and comparison file digest values and signature digest value are to verify signer's digital signature.
Checking disclosed by the present invention is by the system of the digital signature of signing represented by identifier, be applied to digital device, digital device comprises Storage Media, Storage Media stores and checks file, check file to comprise and provide sign identifier, signer of people to sign identifier and the file identifier corresponding with source document, at least comprise: file obtains module, in order to obtain source document according to file identifier; Signature obtains module, obtains the signer digital signature corresponding with signer in order to identifier of signing according to signer; Signature verification module, in order to produce the file digest values of source document, and deciphers signer and signs identifier to obtain signature digest value, and comparison file digest values and signature digest value are to verify signer's digital signature.
Checking disclosed by the present invention is by the method for the digital signature of signing represented by identifier, be applied to digital device, its step at least comprises: provide and check file, checks file and comprises and provide sign identifier, signer of people to sign identifier and the file identifier corresponding with source document; Source document is obtained according to file identifier; Produce the file digest values of source document; The signer digital signature corresponding with signer is obtained according to signer's identifier of signing; Deciphering signer digital signature is to obtain signature digest value; Comparison file digest values and signature digest value are to verify signer's digital signature.
Device disclosed by the present invention, System and method for as above, be that sign identifier and the signer of people that provide that the present invention passes through to produce the corresponding people's of providing digital signature and signer's digital signature signs identifier with the difference between prior art, and people's identifier and signer identifier write of signing of signing will be provided to check in file, make to check sign identifier and the signer of people that provide comprising visualization when file is shown to sign identifier, use the problem solved existing for prior art, and can reach and allow digital signature and tradition technology effect that signed and sealed (SS) is equally easy and easy to use on paper.
Accompanying drawing explanation
The checking that Fig. 1 carries for the present invention is by the system architecture diagram of the digital signature of signing represented by identifier.
Fig. 2 A for the present invention carry hereof with sign identifier representative digit signature method flow diagram.
The checking that Fig. 2 B carries for the present invention is by the method flow diagram of the digital signature of signing represented by identifier.
The schematic diagram of the source document that Fig. 3 A carries for the embodiment of the present invention and intermediate file.
Fig. 3 B is the embodiment of the present invention source document carried and the schematic diagram checking file.
[symbol description]
100 devices
110 Storage Medias
120 identifier generation modules
130 transport modules
150 files obtain module
160 signatures obtain module
170 signature verification modules
310 source documents
320 intermediate files
321 file identifier
322 provide people to sign identifier
330 check file
333 signers sign identifier
400 destination devices
Embodiment
Graphic and embodiment below will be coordinated to describe feature of the present invention and embodiment in detail, content is enough to enable any those skilled in the art fully understand the technological means that technical solution problem of the present invention is applied easily and implement according to this, realizes the attainable effect of the present invention by this.
The present invention can set up for the e-file of digital content and check file, the file of checking set up by the present invention comprise the signature identifier that people and signer are provided, make to check file and there is visual effect at traditional file upper cover seal, in addition, the present invention also can verify the digital signature (signature) corresponding to the signature identifier checked in file.
The checking carried with " Fig. 1 " the present invention of following elder generation by the element schematic of the device inside of the digital signature of signing represented by identifier so that System Operation of the present invention to be described.As shown in Fig. 1, the checking mainly carried containing Storage Media 110 and the present invention of device 100 of the present invention is by the system of the digital signature of signing represented by identifier.Wherein, more include file obtains module 150 to system of the present invention, signature obtains module 160 and signature verification module 170.In addition, attached identifier generation module 120 and transport module 130 can also be comprised in system of the present invention.
Storage Media 110 is responsible for storage and is checked file, uses to provide and checks file to other modules use in system of the present invention.Wherein, checking include file identifier in file, provide sign identifier and signer of people to sign identifier stored by Storage Media 110.In addition, in the embodiment of part, Storage Media 110 also can store the source document corresponding with checking file, but the present invention is not as limit.
" file identifier " that the present invention carries and " signature identifier " are for check the symbol that can be shown in file, generally speaking, file identifier and signature identifier are two-dimensional bar code/response code (Quick Response Code fast, QR code), but the present invention has no particular limits, such as, file identifier also can be specific image with signature identifier.
File identifier and source document have many-to-one corresponding relation, and file obtains module 150 can obtain corresponding source document by file identifier.Wherein, file obtain module 150 will in illustrating after a while.
In the present invention, each signature identifier is only signed corresponding with set of number, the voucher (certificate, cert) providing people/signer to use oneself that the digital signature corresponding with signature identifier is source document and private key (private key) are produced after carrying out specific calculation to source document.Above-mentioned carried specific calculation is including but not limited to encryption, coding, calculating etc., and all calculations that voucher and private key can be used to produce the data be not easily forged can be used in the present invention.Wherein, the signature identifier that the present invention carries comprises " provide people sign identifier " and " signer sign identifier ", the digital signature that the present invention carries comprises " providing people's digital signature " and " signer's digital signature ", the voucher that the present invention carries comprises " providing people's voucher " and " signer's voucher ", and the private key that the present invention carries comprises " providing people's private key " and " signer's private key ".
Identifier generation module 120 can produce the signature identifier corresponding with digital signature.Generally speaking, identifier generation module 120 can calculate to source document according to voucher and private key and produce digital signature, and after generation digital signature, corresponding signature identifier is produced according to the digital signature produced, but the present invention is not as limit, that is, digital signature can produce in outside of the present invention.
Identifier generation module 120 also can by the file identifier corresponding with source document, and provide provide people's voucher and the corresponding people's identifier of signing that provides of the digital signature that provides people's private key to produce of people to write in e-file according to source document and source document, when this e-file is shown, shown content comprises the file identifier corresponding with source document and provides people to sign identifier.Wherein, be identified symbol generation module 120 to write the e-file providing people to sign identifier and file identifier and be " intermediate file " that the present invention carries.In addition, identifier generation module 120 also can produce the file identifier corresponding with source document, but the present invention is not as limit, and that is, the file identifier corresponding with source document can produce in outside of the present invention.
The intermediate file that identifier generation module 120 produces can be sent to destination device 400 by transport module 130, and destination device 400 can be received in intermediate file, write signer to sign the e-file that identifier produces, this e-file is " checking file " that the present invention carries.
In fact, device 100 might not be the dispensing device of intermediate file, and in the embodiment of part, device 100 also may be the receiving trap of intermediate file, namely above-mentioned destination device 400.Now, transport module 130 can the intermediate file that transmits of transmission and reception apparatus, identifier generation module 120 identifier of can being responsible for signer to sign writes in the intermediate file received, and using generation and checks file, making transport module 130 can pass dispensing device back by checking file.Wherein, identifier generation module 120 can produce signer's digital signature according to signer's voucher of signer and signer's private key and source document, the identifier and the generation signer corresponding with signer's digital signature signs, but the present invention is not as limit, that is, signer's digital signature also can produce in outside of the present invention.
In addition, the voucher producing digital signature also can be sent to open Public Key Infrastructure (the Public Key Infrastructure of outside of the present invention by transport module 130, PKI) serve, and the open Public Key Infrastructure of reception serves the result passed back, uses the validity of the voucher being used to the digital signature received by generation by open Public Key Infrastructure service verification.
File obtains module 150 and is responsible for, after system of the present invention obtains file identifier, obtaining corresponding source document according to the file identifier be acquired.Such as, at device 100 in shooting or after being loaded into the file identifier such as two-dimensional bar code/QR code corresponding with source document, file obtains file identifier that module 150 can obtain according to device 100 to the ad-hoc location in Storage Media 110, or reads to the particular web site on networking or download corresponding source document.
Signature obtains module 160 and is responsible for obtaining the digital signature corresponding with the signature identifier checked in file.Signature obtains module 160 and signature identifier can be converted to and meet open public key cryptography compiling standard (Public key cryptography Standards, the digital signature of form PKCS), or read the digital signature of signature represented by identifier, the not special restriction of the present invention.
Signature verification module 170 is responsible for producing the file digest values (digest-value) that file obtains the source document accessed by module 150, and the digital signature in the e-file received by transport module 130 is decrypted (decrypt), use the signature digest value of the digital signature obtained received by transport module 130.
Signature verification module 170 is also responsible for the file digest values that produces of comparison and acquired signature digest value, uses the digital signature in the e-file verified received by transport module 130.Wherein, when signature verification module 170 comparison file digest values is worth identical with signature digest, represent that the digital signature in the e-file received by transport module 130 passes through checking, namely the user of this digital signature signs source document really.
Then explain orally operation system of the present invention and method with an embodiment, and please refer to " Fig. 2 A ", method flow diagram that " Fig. 2 B " the present invention carries.In the present embodiment, suppose device 100 is smart mobile phone, but the present invention is not as limit.
First, supplier needs first to set up source document (step 202).In the present embodiment, suppose that source document is rental agreement, the supplier of source document is the user of smart mobile phone (device 100), this user can use any device editor rental agreement such as its smart mobile phone used or computing machine etc., wherein, the rental agreement of the person of being provided editor uses the file layouts such as Portable Document format (Portable DocumentFormat, PDF) or pure words, and the present invention is not particularly limited.
After supplier sets up source document (step 202), Storage Media 110 can store the source document be established, and identifier generation module 120 also can produce the intermediate file (step 210) comprising the file identifier corresponding with source document and provide people to sign identifier.In the present embodiment, suppose that identifier generation module 120 can produce the file identifier 321 corresponding with source document 310, also supplier's voucher of the user of smart mobile phone (supplier of source document) and supplier's private key can be used to carry out computing to produce supplier's digital signature to source document 310, in addition, identifier generation module 120 also can produce and corresponding with supplier's digital signature provide people to sign identifier 322, and by produced file identifier 321 and provide people's identifier 322 of signing to write in intermediate file 320, make intermediate file 320 as depicted in fig. 3, comprise and and people can be provided to sign identifier 322 by the file identifier 321 of watching.Wherein, the file identifier that produces of identifier generation module 120 with provide people's identifier of signing to be all QR code.
After the intermediate file (step 210) that identifier generation module 120 produces include file identifier and provides people to sign identifier, the intermediate file that identifier generation module 120 produces can be sent to destination device 400 (step 222) by transport module 130.
Destination device 400 is after receiving the intermediate file that device 100 transmits, and destination device 400 can write signer and to sign identifier in intermediate file, uses generation and checks file (step 226).In the present embodiment, the file of hypothesis goal device 400 obtains module and can obtain source document according to the file identifier comprised in intermediate file, the identifier generation module of destination device 400 can carry out computing to produce signer's digital signature at signer's voucher of the user of application target device 400 and signer's private key to source document 310, and the generation signer corresponding with signer's digital signature signs after identifier 333, identifier 333 of produced signer being signed adds in received intermediate file 320, use to produce and check file 330 Ru shown in " Fig. 3 B ".
After file is checked in destination device 400 generation, the transport module of destination device 400 can pass device 100 back by checking file.What the transport module 130 of device 100 can receive that destination device 400 passes back checks file, and is stored in Storage Media 110 by the file of checking received.
After file is checked in Storage Media 110 storage, Storage Media 110 just can provide and check file (step 240).So, file obtains module 150 and can obtain source document (step 251) according to the file identifier checked in file stored by Storage Media 110.In the present embodiment, file obtains module 150 and can read in Storage Media 110 and check file, and is loaded into the file identifier checked in file, uses the source document obtained corresponding to file identifier.
Obtain after module 150 obtains source document (step 251) according to the file identifier checked in file at file, signature verification module 170 can produce the file digest values (step 255) that file obtains the source document that module 150 obtains.
In addition, equally after file is checked in Storage Media 110 storage, after namely Storage Media 110 can provide and check file (step 240), signature obtains module 160 can obtain the signer digital signature (step 262) corresponding with signer according to signer's identifier of signing, signature verification module 170 also can obtain signer's digital signature acquired by module 160 by decrypted signature, uses the signature digest value (step 266) obtaining signer's digital signature.
After signature verification module 170 produces the file digest values (step 255) of source document and decrypted signature obtains the digital signature (step 266) of the signer acquired by module 160, signature verification module 170 can the file digest values that produces of comparison and acquired signature digest value, uses checking signer's digital signature (step 270).
In addition, after signature verification module 170 comparison file digest values and signature digest value are with the digital signature (step 270) verifying signer, signer's digital signature can also be sent to open Public Key Infrastructure service by transport module 130, uses the validity (step 290) being used to the signer's voucher producing signer's digital signature by open Public Key Infrastructure service verification.
In sum, known the present invention and the difference between prior art are to have sign identifier and the signer of people that provide producing the corresponding people's of providing digital signature and signer's digital signature and sign identifier, and people's identifier and signer identifier write of signing of signing will be provided to check in file, make to check sign identifier and the signer of people that provide comprising visualization when file is shown to sign the technological means of identifier, digital signature existing for prior art can be solved by this technological means and not easily directly be used the problem with identification by masses, and then reach and allow digital signature and tradition technology effect that signed and sealed (SS) is equally easy and easy to use on paper.
Moreover, checking of the present invention is by the method for the digital signature of signing represented by identifier, can be implemented in the combination of hardware, software or hardware and software, the dispersing mode that also can realize or intersperse among with different elements the computer system of some interconnection in computer systems, which in a centralised manner realizes.
Although the embodiment disclosed by the present invention as above, only described content is also not used to directly limit scope of patent protection of the present invention.Any the technical staff in the technical field of the invention, under the prerequisite not departing from the spirit and scope disclosed by the present invention, to the formal of enforcement of the present invention and details being done a little change retouching, all belongs to scope of patent protection of the present invention.Scope of patent protection of the present invention, still must be as the criterion with the appending claims person of defining.
Claims (10)
1. a method for the digital signature of checking represented by signature identifier, be applied to a digital device, it is characterized in that, the method at least comprises the following step:
There is provided one to check file, this is checked file and comprises one and provide sign identifier, a signer of people to sign identifier and a file identifier corresponding with a source document;
This source document is obtained according to this file identifier;
Produce a file digest values of this source document;
A signer digital signature corresponding with this signer is obtained according to this signer identifier of signing;
Decipher this signer's digital signature to obtain a signature digest value; And
This file digest values of comparison and this signature digest value are to verify this signer's digital signature.
2. the method for the digital signature of checking as claimed in claim 1 represented by signature identifier, it is characterized in that, the method is before providing this to check the step of file, more comprise and set up this source document, generation comprises this file identifier and this provides people one intermediate file of signing identifier, transmit this intermediate file to one destination device, and receive this destination device in this intermediate file write this signer sign produce after identifier this check the step of file.
3. the method for the digital signature of checking as claimed in claim 1 represented by signature identifier, it is characterized in that, the method more comprises this signer's digital signature of transmission to outside one open Public Key Infrastructure service, uses the step of the validity being used to produce signer's voucher of this signer's digital signature by the disclosure Public Key Infrastructure service verification.
4. a device for the digital signature of checking represented by signature identifier, it is characterized in that, this device at least comprises:
One Storage Media, in order to provide one to check file, this is checked file and comprises one and provide sign identifier, a signer of people to sign identifier and a file identifier corresponding with a source document;
One file obtains module, in order to obtain this source document according to this file identifier;
One signature obtains module, and in order to sign according to this signer, identifier obtains a signer digital signature corresponding with this signer; And
One signature verification module, in order to produce a file digest values of this source document, and deciphers this signer's digital signature to obtain a signature digest value, and this file digest values of comparison and this signature digest value are to verify this signer's digital signature.
5. the device of the digital signature of checking as claimed in claim 4 represented by signature identifier, it is characterized in that, this device more comprises:
One identifier generation module, comprises this file identifier in order to generation and this provides people one intermediate file of signing identifier; And
One transport module, in order to transmit this intermediate file to one destination device, and receive this destination device in this intermediate file write this signer sign produce after identifier this check file.
6. the device of the digital signature of checking as claimed in claim 4 represented by signature identifier, it is characterized in that, in this device more comprise a transport module, in order to transmit this signer's digital signature to outside one open Public Key Infrastructure service, use the validity of the signer's voucher being used to produce this signer's digital signature by the disclosure Public Key Infrastructure service verification.
7. the device of the digital signature of checking as claimed in claim 4 represented by signature identifier, is characterized in that, this provides people's sign identifier and this file identifier of identifier, this signer of signing to be quick response code.
8. the system of the digital signature of a checking represented by signature identifier, system is applied to a digital device, this digital device comprises a Storage Media, this Storage Media stores one and checks file, this is checked file and comprises one and provide sign identifier, a signer of people to sign identifier and a file identifier corresponding with a source document, it is characterized in that, this system at least comprises:
One file obtains module, in order to obtain this source document according to this file identifier;
One signature obtains module, and in order to sign according to this signer, identifier obtains a signer digital signature corresponding with this signer; And
One signature verification module, in order to produce a file digest values of this source document, and deciphers this signer and signs identifier to obtain a signature digest value, and this file digest values of comparison and this signature digest value are to verify this signer's digital signature.
9. the system of the digital signature of checking as claimed in claim 8 represented by signature identifier, it is characterized in that, this system more comprises:
One identifier generation module, comprises this file identifier in order to generation and this provides people one intermediate file of signing identifier; And
One transport module, in order to transmit this intermediate file to one destination device, and receive this destination device in this intermediate file write this signer sign produce after identifier this check file.
10. the system of the digital signature of checking as claimed in claim 8 represented by signature identifier, it is characterized in that, this system more comprises a transport module, in order to transmit this signer's digital signature to outside one open Public Key Infrastructure service, use the validity of the signer's voucher being used to produce this signer's digital signature by the disclosure Public Key Infrastructure service verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175349.9A CN105022967A (en) | 2014-04-28 | 2014-04-28 | Device, system and method for identifying digital signature represented by signature identifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175349.9A CN105022967A (en) | 2014-04-28 | 2014-04-28 | Device, system and method for identifying digital signature represented by signature identifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105022967A true CN105022967A (en) | 2015-11-04 |
Family
ID=54412929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410175349.9A Pending CN105022967A (en) | 2014-04-28 | 2014-04-28 | Device, system and method for identifying digital signature represented by signature identifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105022967A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349179A (en) * | 2001-12-03 | 2002-05-15 | 上海电子商务安全证书管理中心有限公司 | Electronic signature anti-fake method and device |
| CN1808482A (en) * | 2006-02-09 | 2006-07-26 | 北京北大方正电子有限公司 | Visual electronic signature and verification method |
| CN101329750A (en) * | 2008-07-24 | 2008-12-24 | 武汉理工大学 | Method for generating and verifying anti-false stamp with file content protection function |
| US20130086388A1 (en) * | 2011-09-29 | 2013-04-04 | Target Brands, Inc. | Credentials management |
| CN104079406A (en) * | 2013-03-29 | 2014-10-01 | 北京葳网通科技有限公司 | Method, system and terminal for verifying electronic signature represented by identifier |
-
2014
- 2014-04-28 CN CN201410175349.9A patent/CN105022967A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349179A (en) * | 2001-12-03 | 2002-05-15 | 上海电子商务安全证书管理中心有限公司 | Electronic signature anti-fake method and device |
| CN1808482A (en) * | 2006-02-09 | 2006-07-26 | 北京北大方正电子有限公司 | Visual electronic signature and verification method |
| CN101329750A (en) * | 2008-07-24 | 2008-12-24 | 武汉理工大学 | Method for generating and verifying anti-false stamp with file content protection function |
| US20130086388A1 (en) * | 2011-09-29 | 2013-04-04 | Target Brands, Inc. | Credentials management |
| CN104079406A (en) * | 2013-03-29 | 2014-10-01 | 北京葳网通科技有限公司 | Method, system and terminal for verifying electronic signature represented by identifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105591750B (en) | The generation method that signs electronically and system | |
| US10559049B2 (en) | Digital passport country entry stamp | |
| CN102024127B (en) | Control platform, user terminal, distribution system and method of application software | |
| CN108092779A (en) | A kind of method and device for realizing electronic signature | |
| US20120308003A1 (en) | Authentic barcodes using digital signatures | |
| CN101859426B (en) | Electronic ticket service system and realizing method thereof | |
| WO2021218166A1 (en) | Contract signing method and apparatus, device and computer-readable storage medium | |
| US20080052520A1 (en) | System and method for verifying electronic signature of a document | |
| CN101017562A (en) | Method for generating electronic invoice and interactively using based on communication network | |
| CN104021482A (en) | Certificate false-proof verification method base on identification authentication technology | |
| JP4746338B2 (en) | Contract falsification prevention system and contract falsification prevention method | |
| CN102801710A (en) | Networked transaction method and system | |
| CN105678365A (en) | Two-dimensional code e-ticket generation method and system, two-dimensional code e-ticket verification method and verification terminal | |
| CN104734851A (en) | Electronic seal method and system | |
| CN111222178B (en) | Data signature method and device | |
| CN109829317A (en) | A kind of method, apparatus and system generating electronic contract based on handwritten signature picture | |
| CN103902925A (en) | Method and equipment for digital document signature | |
| CN111418182B (en) | Information processing apparatus, registration apparatus, information processing method, registration method, and computer program | |
| CN104168117B (en) | A kind of speech digit endorsement method | |
| CN106815716A (en) | A kind of electronic record file forming method and system | |
| CN110569672A (en) | efficient credible electronic signature system and method based on mobile equipment | |
| CN104320253A (en) | Two-dimension code authentication system and method based on CBS signature mechanism | |
| CN114817890A (en) | Electronic signature method and device of document, terminal equipment and storage medium | |
| CN105405003A (en) | Electronic stamp realization method having area protection function and electronic stamp verification method | |
| CN101488246A (en) | Check verification method, check verification apparatus and check verification system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |
|
| WD01 | Invention patent application deemed withdrawn after publication |