CN110532808A - A kind of electronic signature method based on electronic document image object - Google Patents
A kind of electronic signature method based on electronic document image object Download PDFInfo
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- CN110532808A CN110532808A CN201910766567.2A CN201910766567A CN110532808A CN 110532808 A CN110532808 A CN 110532808A CN 201910766567 A CN201910766567 A CN 201910766567A CN 110532808 A CN110532808 A CN 110532808A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/36—User authentication by graphic or iconic representation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/604—Tools and structures for managing or administering access control systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention discloses a kind of electronic signature methods based on electronic document image object, and stamped signature process and stamped signature verify process, including UKEY processing module, image processing module, stamped signature processing module, general-purpose algorithm module and electronic document control module, views module is connect with image processing module, stamped signature main body module, seal module and Digital Signature module respectively；Stamped signature processing module is connect with general-purpose algorithm module by signal.Electronic Signature of the present invention verifies document integrality and authenticity at PC PC end and mobile terminal intercommunication.Seal is stored in electronic document in a manner of simple image object, will not cause to attack to computer.It can be applicable in each sort of electronic document office software, be conducive to the compatibility, the stability that improve software product, maintainability.
Description
Technical field
The present invention relates to Electronic Signature technology, suitable for the mutual of PC PC Electronic Signature and mobile terminal Electronic Signature
Logical more particularly to a kind of electronic signature method based on electronic document image object.
Background technique
In recent years, as IT application in government affairs and IT application in enterprises continue to develop, teleworking software also achieves very big
Development, the country have also emerged in large numbers many outstanding office software manufacturers, such as Kingsoft, Yongzhong, acceptance of the bid.In order to facilitate OA enterprise collection
At teleworking software all uses MS Office Applications MSO VAB interface specification.
However, the Electronic Signature product of traditional electronic document based on doc, docx, xls, xlsx etc., generallys use
ActiveX technology can operate all resources of computer due to ActiveX control technology self-technique feature, be easy to calculating
Cause potential security risk.So the teleworking software in highest version no longer supports ActiveX control, this is just limited
The application of Electronic Signature product is made.
Meanwhile teleworking software such as Kingsoft, Yongzhong, acceptance of the bid etc., it is right due to each producer's electronic document technological disparity
ActiveX control technical compatibility mode is also not quite similar, or even does not support ActiveX control technology.This restrict electronics
The application of stamped signature product, or even cannot be used in some electronic document office softwares.
In addition, with the development of mobile internet, mobile office is more more and more universal, electronic document is verified in mobile terminal stamped signature
Demand, it is more and more urgent, due to the electronic signature method of ActiveX technology, be not available in mobile systems such as Androids, together
When, it can not be obtained by electronic document office software interface using the signature information of ActiveX technology, ActiveX can only be passed through
Control object obtains, so, it is not able to verify that whether Electronic Signature is effective in mobile terminal.
The shortcomings that conditional electronic stamped signature technology:
1, there are security risks, may impact to computer.It is all that the stamped signature control of ActiveX technology can operate computer
Resource is easy to cause to attack to computer.
2, poor compatibility can only use on individual version electronic document office softwares.The stamped signature control of ActiveX technology
The electronic document office software of highest version is not adapted to.Limit the application of Electronic Signature product.
3, new electronic document office software development need is not adapted to.Due to each electronic document office software pair
ActiveX technical support dynamics is different, some office softwares do not support that this greatlys restrict making for Electronic Signature product even
With.
4, the development need of " internet+" technology is not adapted to.Due to systems such as mobile terminal Android, apples, do not support
ActiveX technology, so, in mobile terminal, teleworking software is unable to the existing conditional electronic stamped signature product of normal use.
Summary of the invention
The present invention is directed to the disadvantages mentioned above of conditional electronic stamped signature technology, provides a kind of electricity based on electronic document image object
Sub- signature method all supports simple image object as the carrier of stamped signature, reduction pair using each electronic document office software
The dependence of the MSO VBA interface and teleworking software of office software, meets various electronics safer, more reliable, more applicablely
Document office software and the needs of " internet+" mobile terminal electronic signature.
The object of the present invention is achieved like this.A kind of electronic signature method based on electronic document image object, including
UKEY processing module, image processing module, stamped signature processing module, general-purpose algorithm module and electronic document control module:
The UKEY processing module: including seal module and Digital Signature module, seal module is responsible for obtaining the print inside UKEY
Chapter information, Digital Signature module are responsible for obtaining the digital certificate inside UKEY, are digitally signed to signature original text, verifying number
Signature；
Described image processing module: it is responsible for the stamp for obtaining seal module, is converted into the picture of background transparent；
The stamped signature processing module: including stamped signature main body module and stamped signature module, stamped signature module connects stamped signature main body module, stamped signature
Main body module describes electronic document main information, one stamped signature object of stamped signature module represents；
The general-purpose algorithm module: including symmetrical encryption/decryption module, Base64 coding module and Hash module；
The electronic document control module includes views module, document event module and document function module, document event module
Document function module is connected, document event module and document function module are separately connected views module, in which: views module is responsible for
Respond user operation case；Document event module is responsible for responding electronic document office software trigger event；Document function module is negative
Blame electronic document operation；
The views module is connect with image processing module, stamped signature main body module, seal module and Digital Signature module respectively；
The stamped signature processing module is connect with general-purpose algorithm module by signal.
Further, the electronic document main information is document code, stamped signature quantity, stamped signature list information and seal image
List information.
Further, the user operation case refers to that mouse-click or right mouse button are clicked.
Further, the software trigger event refers to the trigger event that electronic document office software provides.
Further, the electronic document operation refers to addition image object or deletes the operation of image object.
A kind of stamped signature process of the electronic signature method based on electronic document image object, its step are as follows:
1) firstly, opening electronic document using electronic document office software, whether UKEY processing module detection terminal is inserted
Enter UKEY equipment, if being not inserted into UKEY equipment, exits stamped signature process；No person carries out next step；
2) whether UKEY processing module verifying digital signature and seal data are effective, if any of them item authentication failed, move back
Stamped signature process out；No person carries out next step；
3) UKEY processing module obtains stamped signature list in UKEY equipment, and selection needs the seal of stamped signature；
4) whether UKEY processing module verifying UKEY device password is correct, if password authentification fails, exits stamped signature process；It is no
Person, into next step；
5) UKEY processing module obtains the seal stamp data selected in UKEY equipment and is converted into printing by image processing module
Chapter image data；Meanwhile electronic document control module normalization electronic document office software view area, it obtains current page and sits
Mark, views module obtain mouse screen coordinate, view screen coordinate are converted into electronic document page areal coordinate；
6) the document function module in electronic document control module, the page coordinates position obtained in step 5), uses step 5)
The seal picture of generation generates electronic document image object；Document function module obtains electronic document original text, passes through general-purpose algorithm
Module Hash submodule generates original text abstract；Using the Digital Signature module in UKEY processing module, original text abstract is counted
Word signature, generates signature value and public key certificate；
7) seal stamp data in the signature value and public key certificate and step 5) that generate in step 6) are generated into signature information, updated
Stamped signature main information in stamped signature processing module records title, seal pictorial information and the document information of stamped signature image object；
8) original signature main information and signature information are encrypted using the symmetrical encryption/decryption module in general-purpose algorithm module, it is ensured that
Information security；
9) Base64 coding module carries out Base64 coding to the encrypted content in step 8)；
10) electronic document control module generates Drawing Object, and the signature information of Base64 coding is saved by its string attribute
And stamped signature main information, meanwhile, rename stamped signature Drawing Object title and main information Drawing Object title；
11) stamped signature terminates, and when closing electronic document office software, document event module triggers document close event, prompts user
Save stamped signature document.
A kind of stamped signature verifying process of the electronic signature method based on electronic document image object, its step are as follows:
1) electronic document of stamped signature, the document function module in electronic document control module, according to stamped signature principal name KG_ are opened
GLOBAL searches the stamped signature main information of encryption；
2) Base64 coding module decodes stamped signature main information, generates stamped signature main information to be decoded；
3) symmetrical encryption/decryption module decodes signature main information to be decoded, obtains stamped signature main information in plain text；
4) stamped signature main body module parses stamped signature main information, obtains all signature informations to be decoded, by general-purpose algorithm module,
Base64 coding and decoding and the decoding of symmetrical encryption and decryption obtain signature information in plain text；
5) document function module obtains current stamped signature electronic document original text；
6) by general-purpose algorithm module Hash submodule, original text abstract is generated；
7) stamped signature processing module extracts signature value and public key certificate in signature information, uses Digital Signature module verification step 6)
Whether the abstract of middle generation succeeds, if it is successful, entering step 8)；9) no person, enters step；
8) stamped signature is effectively shown, is directly entered step 12), terminates stamped signature verifying；
9) stamped signature processing module extracts the stamp of seal, and invalid seal image is generated by image processing module；
10) document function module obtains the corresponding image object of stamped signature, the invalid seal picture generated with step 9), original
Position generates electronic document image object, replaces original image object, realizes the update of seal image；
11) face shows invalid stamped signature image on the electronic document；
12) stamped signature verifying terminates.
The Electronic Signature side based on streaming electronic document (doc, docx, xls, xlsx) image object that the present invention uses
Method includes but is not limited to the implementation methods such as affix one's seal, verify, and protects the integrality and authenticity of document.Compatible each electronic document
Office software realizes that electronic document in each teleworking software mutually mutually test by label.Electronic Signature is in PC PC end and movement
Terminal mutual verifies document integrality and authenticity.Seal is stored in electronic document in a manner of simple image object, will not
Computer is caused to attack.It can be applicable in each sort of electronic document office software, be conducive to the compatibility, the stabilization that improve software product
Property, maintainability.Be advantageously implemented it is cross-platform, realize PC terminal on affix one's seal and stamped signature verifying etc., stamped signature document is tested on mobile terminal
It demonstrate,proves and checks；Since Electronic Signature carrier is exactly simple image object, so, it is handled official business in mobile terminal by electronic document soft
The interface also available stamped signature data that part provides, whether verifying stamped signature is legal, document integrality, authenticity.
Detailed description of the invention
Fig. 1 is method structural relation figure of the invention.
Specific embodiment
Below in conjunction with drawings and examples, the invention will be further described.Referring to Fig. 1, one kind being based on electronic document image
The system of the electronic signature method of object, the MSO VBA interface provided using electronic document office software, is integrated into electronic document
Office software；System includes UKEY processing module, image processing module, stamped signature processing module, general-purpose algorithm module and electronics text
Shelves control module, specifically as shown in Figure 1:
UKEY processing module: including seal module and Digital Signature module, seal module is responsible for obtaining the seal letter inside UKEY
Breath, Digital Signature module are responsible for obtaining the digital certificate inside UKEY, are digitally signed to signature original text, verify number label
Name；
Image processing module: it is responsible for the stamp for obtaining seal module, is converted into the picture of background transparent；
Stamped signature processing module: including stamped signature main body module and stamped signature module, stamped signature main body module describes electronic document main information,
One stamped signature object of stamped signature module represents；
General-purpose algorithm module: including symmetrical encryption/decryption module, Base64 coding module and Hash module；
Electronic document control module: including views module, document event module and document function module, in which: views module is negative
Duty response user operation case；Document event module is responsible for responding electronic document office software trigger event；Document function module
It is responsible for electronic document operation.
Electronic document control module is the nucleus module of Electronic Seal System, and wherein document event module starts view mould
Block is pre-processed before carrying out stamped signature to document using document function module；Views module responds UI operation, uses document function mould
Block provide interface, to document carry out corresponding operation, such as insertion delete seal picture, insertion delete signature information；UKEY
Processing module provides seal information, digital signature function and legitimate verification for electronic document control module, prints in UKEY module
Chapter module provides seal information and seal legitimate verification；Digital Signature module provides the function of digital signature and signature verification.
Print in the UKEY processing module that image processing module obtains views module in electronic document processing module inside seal information
Mould is handled, the seal image being converted into, and is inserted into electronic document by document function module interface；Stamped signature processing module uses
The algorithm function that general-purpose algorithm module provides, the stamped signature data that views module stamped signature process in electronic document stamped signature module is generated
Normalization, wherein there are multiple stamped signature modules, each accessible stamped signature modules of stamped signature main body module for stamped signature main body module.
The present invention is based on the electronic signature method of electronic document image object, this process realizes step such as in PC PC
Under:
1) firstly, opening electronic document using electronic document office software, whether UKEY processing module detection terminal is inserted
Enter UKEY equipment, if being not inserted into UKEY equipment, exits stamped signature process；No person carries out next step；
2) whether UKEY processing module verifying digital signature and seal data are effective, if any of them item authentication failed, move back
Stamped signature process out；No person carries out next step；
3) UKEY processing module obtains stamped signature list in UKEY equipment, and selection needs the seal of stamped signature；
4) whether UKEY processing module verifying UKEY device password is correct, if password authentification fails, exits stamped signature process；It is no
Person, into next step；
5) UKEY processing module obtains the seal stamp data selected in UKEY equipment and is converted into printing by image processing module
Chapter image data；Meanwhile electronic document control module normalization electronic document office software view area, it obtains current page and sits
Mark, views module obtain mouse screen coordinate, view screen coordinate are converted into electronic document page areal coordinate；
6) the document function module in electronic document control module, the page coordinates position obtained in step 5), uses step 5)
The seal picture of generation generates electronic document image object (the AddPicture method of Shapes object)；Document function module obtains
Electronic document original text is taken, by general-purpose algorithm module Hash submodule, generates original text abstract；Use the number in UKEY processing module
Word signature blocks are digitally signed original text abstract, generate signature value and public key certificate；
7) seal stamp data in the signature value and public key certificate and step 5) that generate in step 6) are generated into signature information, updated
Stamped signature main information in stamped signature processing module records title, seal pictorial information and the document information of stamped signature image object；
8) original signature main information and signature information are encrypted using the symmetrical encryption/decryption module in general-purpose algorithm module, it is ensured that
Information security；
9) Base64 coding module carries out Base64 coding to the encrypted content in step 8)；
10) electronic document control module generates Drawing Object (the AddShape method of Shapes object), passes through its character string category
Property save Base64 coding signature information and stamped signature main information, meanwhile, rename stamped signature Drawing Object title and main body letter
Cease Drawing Object title；
11) stamped signature terminates, and when closing electronic document office software, document event module triggers document close event, prompts user
Save stamped signature document.
Electronic Signature based on electronic document image object of the invention verifies process, this process is in PC PC and shifting
Dynamic terminal device realizes that steps are as follows:
1) electronic document of stamped signature, the document function module in electronic document control module, according to stamped signature principal name KG_ are opened
GLOBAL searches the stamped signature main information of encryption；
2) Base64 coding module decodes stamped signature main information, generates stamped signature main information to be decoded；
3) symmetrical encryption/decryption module decodes signature main information to be decoded, obtains stamped signature main information in plain text；
4) stamped signature main body module parses stamped signature main information, obtains all signature informations to be decoded, by general-purpose algorithm module,
Base64 coding and decoding and the decoding of symmetrical encryption and decryption obtain signature information in plain text；
5) document function module obtains current stamped signature electronic document original text；
6) by general-purpose algorithm module Hash submodule, original text abstract is generated；
7) stamped signature processing module extracts signature value and public key certificate in signature information, uses Digital Signature module verification step 6)
Whether the abstract of middle generation succeeds, if it is successful, entering step 8)；9) no person, enters step；
8) stamped signature is effectively shown, is directly entered step 12), terminates stamped signature verifying；
9) stamped signature processing module extracts the stamp of seal, and invalid seal image is generated by image processing module；
10) document function module obtains the corresponding image object of stamped signature, the invalid seal picture generated with step 9), original
Position generates electronic document image object, replaces original image object, realizes the update of seal image；
11) face shows invalid stamped signature image on the electronic document；
12) stamped signature verifying terminates.
The electronic signature method based on electronic document image object that the present invention designs, provide it is a kind of it is safer, more may be used
It leans on, more applicable electric endorsement method, is able to solve the problem of various electronic document office software compatibility, be able to solve " mutually
The demand of networking+" mobile terminal electronic signature stamped signature verifying.
Claims (7)
1. a kind of electronic signature method based on electronic document image object, which is characterized in that including UKEY processing module, image
Processing module, stamped signature processing module, general-purpose algorithm module and electronic document control module:
The UKEY processing module: including seal module and Digital Signature module, seal module is responsible for obtaining the print inside UKEY
Chapter information, Digital Signature module are responsible for obtaining the digital certificate inside UKEY, are digitally signed to signature original text, verifying number
Signature；
Described image processing module: it is responsible for the stamp for obtaining seal module, is converted into the picture of background transparent；
The stamped signature processing module: including stamped signature main body module and stamped signature module, stamped signature module connects stamped signature main body module, stamped signature
Main body module describes electronic document main information, one stamped signature object of stamped signature module represents；
The general-purpose algorithm module: including symmetrical encryption/decryption module, Base64 coding module and Hash module；
The electronic document control module includes views module, document event module and document function module, document event module
Document function module is connected, document event module and document function module are separately connected views module, in which: views module is responsible for
Respond user operation case；Document event module is responsible for responding electronic document office software trigger event；Document function module is negative
Blame electronic document operation；
The views module is connect with image processing module, stamped signature main body module, seal module and Digital Signature module respectively；
The stamped signature processing module is connect with general-purpose algorithm module by signal.
2. the electronic signature method according to claim 1 based on electronic document image object, which is characterized in that the electricity
Subdocument main information is document code, stamped signature quantity, stamped signature list information and seal image list information.
3. the electronic signature method according to claim 1 based on electronic document image object, which is characterized in that the use
Family action event refers to that mouse-click or right mouse button are clicked.
4. the electronic signature method according to claim 1 based on electronic document image object, which is characterized in that described soft
Part trigger event refers to the trigger event that electronic document office software provides.
5. the electronic signature method according to claim 1 based on electronic document image object, which is characterized in that the electricity
Subdocument operation refers to addition image object or deletes the operation of image object.
6. a kind of stamped signature process based on electronic signature method described in claim 1, which is characterized in that its step are as follows:
1) firstly, opening electronic document using electronic document office software, whether UKEY processing module detection terminal is inserted
Enter UKEY equipment, if being not inserted into UKEY equipment, exits stamped signature process；No person carries out next step；
2) whether UKEY processing module verifying digital signature and seal data are effective, if any of them item authentication failed, move back
Stamped signature process out；No person carries out next step；
3) UKEY processing module obtains stamped signature list in UKEY equipment, and selection needs the seal of stamped signature；
4) whether UKEY processing module verifying UKEY device password is correct, if password authentification fails, exits stamped signature process；It is no
Person, into next step；
5) UKEY processing module obtains the seal stamp data selected in UKEY equipment and is converted into printing by image processing module
Chapter image data；Meanwhile electronic document control module normalization electronic document office software view area, it obtains current page and sits
Mark, views module obtain mouse screen coordinate, view screen coordinate are converted into electronic document page areal coordinate；
6) the document function module in electronic document control module, the page coordinates position obtained in step 5), uses step 5)
The seal picture of generation generates electronic document image object；Document function module obtains electronic document original text, passes through general-purpose algorithm
Module Hash submodule generates original text abstract；Using the Digital Signature module in UKEY processing module, original text abstract is counted
Word signature, generates signature value and public key certificate；
7) seal stamp data in the signature value and public key certificate and step 5) that generate in step 6) are generated into signature information, updated
Stamped signature main information in stamped signature processing module records title, seal pictorial information and the document information of stamped signature image object；
8) original signature main information and signature information are encrypted using the symmetrical encryption/decryption module in general-purpose algorithm module, it is ensured that
Information security；
9) Base64 coding module carries out Base64 coding to the encrypted content in step 8)；
10) electronic document control module generates Drawing Object, and the signature information of Base64 coding is saved by its string attribute
And stamped signature main information, meanwhile, rename stamped signature Drawing Object title and main information Drawing Object title；
11) stamped signature terminates, and when closing electronic document office software, document event module triggers document close event, prompts user
Save stamped signature document.
7. a kind of stamped signature based on electronic signature method described in claim 1 verifies process, which is characterized in that its step is such as
Under:
1) electronic document of stamped signature, the document function module in electronic document control module, according to stamped signature principal name KG_ are opened
GLOBAL searches the stamped signature main information of encryption；
2) Base64 coding module decodes stamped signature main information, generates stamped signature main information to be decoded；
3) symmetrical encryption/decryption module decodes signature main information to be decoded, obtains stamped signature main information in plain text；
4) stamped signature main body module parses stamped signature main information, obtains all signature informations to be decoded, by general-purpose algorithm module,
Base64 coding and decoding and the decoding of symmetrical encryption and decryption obtain signature information in plain text；
5) document function module obtains current stamped signature electronic document original text；
6) by general-purpose algorithm module Hash submodule, original text abstract is generated；
7) stamped signature processing module extracts signature value and public key certificate in signature information, uses Digital Signature module verification step 6)
Whether the abstract of middle generation succeeds, if it is successful, entering step 8)；9) no person, enters step；
8) stamped signature is effectively shown, is directly entered step 12), terminates stamped signature verifying；
9) stamped signature processing module extracts the stamp of seal, and invalid seal image is generated by image processing module；
10) document function module obtains the corresponding image object of stamped signature, the invalid seal picture generated with step 9), original
Position generates electronic document image object, replaces original image object, realizes the update of seal image；
11) face shows invalid stamped signature image on the electronic document；
12) stamped signature verifying terminates.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110990820A (en) * | 2019-12-04 | 2020-04-10 | 爱信诺征信有限公司 | Tax disk authorization method and device, electronic equipment and storage medium |
| CN111191295A (en) * | 2020-01-02 | 2020-05-22 | 山东同智伟业软件股份有限公司 | Unordered electronic signature method under PDF file |
| CN111769955A (en) * | 2020-06-30 | 2020-10-13 | 成都卫士通信息产业股份有限公司 | Electronic signature generation method and device, electronic signature verification method and device and related components |
| CN112307520A (en) * | 2020-11-09 | 2021-02-02 | 语联网（武汉）信息技术有限公司 | Electronic seal adding and verifying method and system |
| CN114676451A (en) * | 2020-12-24 | 2022-06-28 | 航天信息股份有限公司 | Electronic document signature method and device, storage medium and electronic equipment |
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