CN101655946B - Method, system and equipment for realizing electronic seal - Google Patents
Method, system and equipment for realizing electronic seal Download PDFInfo
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- CN101655946B CN101655946B CN2009101784053A CN200910178405A CN101655946B CN 101655946 B CN101655946 B CN 101655946B CN 2009101784053 A CN2009101784053 A CN 2009101784053A CN 200910178405 A CN200910178405 A CN 200910178405A CN 101655946 B CN101655946 B CN 101655946B
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Abstract
The embodiment of the invention relates to the technical field of mobile communication, in particular to a method, a system and equipment for realizing an electronic seal, which are used for achieving the function of the electronic seal by a mobile terminal, thereby improving the flexibility of a mobile officing service and expanding the application field of the mobile officing service. The method of the embodiment comprises the following steps: processing a document according to a prestored digital certificate to obtain a digital signature which corresponds to the document; generating the electronic seal according to the obtained digital certificate and a prestored electronic seal image; sending the electronic seal to a server and instructing the server to add the electronic seal into the document. The method of the embodiment can improve the flexibility of the mobile officing service and expand the application field of the mobile officing service.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly a kind of method, system and equipment of realizing E-seal.
Background technology
Along with domestic 3G (Third Generation) Moblie rapid development of network, numerous enterprises is more and more stronger to the demand of mobile office.Under this background, a lot of mobile office products are developed.
The mobile office business is to enterprise administration, mail management, official document such as to be examined at a kind of novel business of Working information demand, and can satisfy the application scenarios of fixing office of enterprise and mobile office.Wherein, official document the examining function that is absolutely necessary.
Official document examining can be realized through the mode of adding a cover E-seal.E-seal is a kind of integrated virtual digital sealing that uses technology such as digital signature, digital watermarking and Digital Image Processing, has characteristics such as anti-counterfeiting, anti-repudiation.
At present; The file layouts such as WORD or PDF that all are based on electronic seal system in the computing machine realize; Because these file layouts all have the interface that can supply secondary development in the WINDOWS system; Can operate the file of these forms through these interfaces, so can realize the E-seal function in the computing machine.Yet in the handheld mobile communication field, because portable terminal receives the limitation of hardware, the user is difficult to realize the E-seal function through portable terminal.
In sum, the user is difficult to realize the E-seal function through portable terminal at present.
Summary of the invention
The embodiment of the invention provides a kind of method, system and equipment of realizing E-seal, realizes the E-seal function in order to pass through portable terminal, thereby has improved the professional dirigibility of mobile office, has expanded the professional application of mobile office.
A kind of method that realizes E-seal that the embodiment of the invention provides, this method comprises:
According to prestored digital certificate file is handled, obtained the corresponding digital signature of this document;
According to digital signature that obtains and prestored electronic seal image, generate E-seal;
Send said E-seal to said server, be used for indicating said server to add said E-seal to this document;
When needs are verified file, the file that adds said E-seal is uploaded onto the server, indicate said server from the file that adds E-seal, to extract E-seal;
From said server, download E-seal and the file of removing E-seal;
According to the content of the file of removing E-seal, generate second standard message summary;
From the said E-seal of downloading, extract watermark information through digital watermark;
According to PKI said watermark information is deciphered, obtained eap-message digest to be verified;
Said second standard message summary and said eap-message digest to be verified are mated, if mate successfully, then definite this document checking is passed through; Otherwise, confirm this document authentication failed.
A kind of system that realizes E-seal that the embodiment of the invention provides, this system comprises: portable terminal and server;
Signature blocks in the portable terminal is used for according to prestored digital certificate file being handled, and obtains the corresponding digital signature of this document;
Description of drawings
Generation module in the portable terminal is used for generating E-seal according to the digital signature and the prestored electronic seal image that obtain;
Sending module in the portable terminal is used for sending said E-seal to server, is used for indicating said server to add said E-seal to this document;
Authentication module in the portable terminal is used for the file that adds said E-seal is uploaded onto the server, and indicates said server from the file that adds E-seal, to extract E-seal; From said server, download E-seal and the file of removing E-seal; According to the content of the file of removing E-seal, generate second standard message summary; From the said E-seal of downloading, extract watermark information through digital watermark; According to PKI said watermark information is deciphered, obtained eap-message digest to be verified; Said second standard message summary and said eap-message digest to be verified are mated, if mate successfully, then definite this document checking is passed through; Otherwise, confirm this document authentication failed;
Server is used for adding the said E-seal of receiving to this document.
A kind of portable terminal of realizing E-seal that the embodiment of the invention provides, this portable terminal comprises:
Signature blocks is used for according to prestored digital certificate file being handled, and obtains the corresponding digital signature of this document;
Embodiment
Generation module is used for generating E-seal according to the digital signature and the prestored electronic seal image that obtain;
Sending module is used for sending said E-seal to server, is used for indicating said server to add said E-seal to this document;
Authentication module is used for the file that adds said E-seal is uploaded onto the server, and indicates said server from the file that adds E-seal, to extract E-seal; From said server, download E-seal and the file of removing E-seal; According to the content of the file of removing E-seal, generate second standard message summary; From the said E-seal of downloading, extract watermark information through digital watermark; According to PKI said watermark information is deciphered, obtained eap-message digest to be verified; Said second standard message summary and said eap-message digest to be verified are mated, if mate successfully, then definite this document checking is passed through; Otherwise, confirm this document authentication failed.
The embodiment of the invention is handled file according to prestored digital certificate, obtains the corresponding digital signature of this document; According to digital signature that obtains and prestored electronic seal image, generate E-seal; Send E-seal to server, server adds E-seal in this document to.Because the user can realize the E-seal function through portable terminal, thereby improve the professional dirigibility of mobile office, expanded the professional application of mobile office.
Fig. 1 realizes the system architecture synoptic diagram of E-seal for the embodiment of the invention;
Fig. 2 realizes the synoptic diagram of E-seal for the embodiment of the invention;
Fig. 3 is the structural representation of embodiment of the invention portable terminal;
Fig. 4 is first kind of method flow synoptic diagram of realizing E-seal of the embodiment of the invention;
Fig. 5 is second kind of method flow synoptic diagram of realizing E-seal of the embodiment of the invention;
Fig. 6 is the method flow synoptic diagram of embodiment of the invention checking E-seal.
The embodiment of the invention is handled file according to prestored digital certificate, obtains the corresponding digital signature of this document; According to digital signature that obtains and prestored electronic seal image, generate E-seal; Send E-seal to server, server adds E-seal in this document to.Because the user can realize the E-seal function through portable terminal, thereby improve the professional dirigibility of mobile office, expanded the professional application of mobile office.
The embodiment of the invention realizes that the scheme of E-seal can be based on C/S (client/server) pattern.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 1, the embodiment of the invention realizes that the system of E-seal comprises: portable terminal 10 and server 20.
Wherein, the mode of portable terminal 10 acquisition files has a variety of:
Such as storing in the portable terminal 10 in advance by the user or portable terminal 10 file in download from server 20.
Storing in advance in the portable terminal 10 if file is the user, can be that signer is deposited file in the portable terminal 10, or the means of applicant through mail, other portable terminals send to file in the portable terminal 10 of signer.
If portable terminal 10 is file in download from server 20; Then can be as shown in Figure 2; If the applicant has file to need reply, this document is arrived server 20 (such as the mobile office server) through client upload, from server 20, download this document by portable terminal 10 then.
If file is to store in advance in the portable terminal 10, portable terminal 10 need send to server together with E-seal and this document.
Wherein, prestored digital certificate also in portable terminal 10, portable terminal 10 is handled file according to digital certificate, obtains the corresponding digital signature of this document.
Concrete; Portable terminal 10 is according to the content of file, first standard message of spanned file summary (such as using SHA (standard hashing algorithm) hash function that the content of file is operated, first standard message summary of spanned file); Confirm the private key of prestored digital certificate then; According to the private key of digital certificate, the eap-message digest that generates is encrypted, obtain digital signature.
Wherein, portable terminal 10 can add the digital signature that obtains in the prestored electronic seal image to through digital watermark, generates E-seal.
After can adding to E-seal in this document such as server 20, send the completion message that comprises the file that adds E-seal to portable terminal 10, perhaps portable terminal 10 can directly sign in in the server 20, searches the file that adds E-seal.
In order to guarantee the security of E-seal, portable terminal 10 can also be verified the E-seal that adds after from server 20, downloading the file that adds E-seal.
Concrete; The file that portable terminal 10 is verified needs uploads onto the server 20, and server 20 extracts E-seal from the file that adds E-seal, thereby generates two files; One is the source document that does not add E-seal, and one is the E-seal of this document;
From the E-seal of downloading, extract watermark information through digital watermark, watermark information is deciphered, obtain eap-message digest to be verified according to PKI;
Second standard message summary and eap-message digest to be verified are mated, if mate successfully (promptly second standard message summary is identical with eap-message digest to be verified), then definite this document checking is passed through; Otherwise, confirm this document authentication failed.
The PKI here (being the PKI of signer) can be that user terminal is downloaded from network side, also can be to store on the user terminal in advance.
After coupling was accomplished, portable terminal 10 can also show the result of coupling.
Wherein, the portable terminal 10 of the embodiment of the invention can be mobile phone or other hand-held mobile terminal equipment.，
As shown in Figure 3, embodiment of the invention portable terminal comprises: signature blocks 100, generation module 110 and sending module 120.
Signature blocks 100 is used for according to prestored digital certificate file being handled, and obtains the corresponding digital signature of this document.
Sending module 120 is used for sending E-seal to server, is used for indicating server to add E-seal to this document.
Wherein, the mode of acquisition file has a variety of:
Such as storing in the portable terminal in advance by the user or signature blocks 100 file in download from server.
If file is to store in advance in the portable terminal, sending module 120 need send to server together with E-seal and this document.
Wherein, prestored digital certificate in portable terminal, signature blocks 100 are handled file according to digital certificate, obtain the corresponding digital signature of this document.
Concrete, signature blocks 100 is according to the content of file, and first standard message of spanned file is made a summary, and confirms the private key of prestored digital certificate then, according to the private key of digital certificate, the eap-message digest that generates is encrypted, and obtains digital signature.
Wherein, the portable terminal of the embodiment of the invention can further include: processing module 130.
Wherein, the file of the interpolation E-seal that processing module 130 is downloaded can be the file that sending module 120 sends, and also can be the file that other user terminals send.
In order to guarantee the security of E-seal, can also verify that then the portable terminal of the embodiment of the invention can further include to the E-seal that adds: authentication module 140.
As shown in Figure 4, first kind of method that realizes E-seal of the embodiment of the invention comprises the following steps:
Digital signature and prestored electronic seal image that step 402, basis obtain generate E-seal.
Wherein, can further include before the step 401:
Obtain the file that to sign.
The mode that obtains file has a variety of:
Such as storage file or portable terminal file in download from server in advance.
If file is stored in advance, need E-seal and this document be sent to server together in the step 403.
In the practical implementation process, can prestored digital certificate, then according to this digital certificate file be handled in the step 401, obtain the corresponding digital signature of this document.
Concrete, according to the content of file, first standard message of spanned file summary, the private key of definite prestored digital certificate according to the private key of digital certificate, is encrypted the eap-message digest that generates then, obtains digital signature.
In the step 402, can the digital signature that obtain be added in the prestored electronic seal image through digital watermark, generate E-seal.
Wherein, can further include after the step 403:
Step 404, server through the interface of secondary development, add this E-seal in the file to after receiving E-seal.
If there are a plurality of files need add E-seal, then server can perhaps be confirmed the E-seal corresponding file according to file identification according to the sign of the portable terminal that sends E-seal and the corresponding relation of file.
Wherein, can further include after the step 404:
Step 405, after server adds to E-seal in this document, from server, download to add the file of E-seal.
Wherein, the file of the interpolation E-seal of download can be the file that this user terminal sends, and also can be the file that other user terminals send.
After can adding to E-seal in this document such as server, return the completion message that comprises the file that adds E-seal, perhaps can directly sign in in the server, search the file that adds E-seal.
Preferable, in order to guarantee the security of E-seal, can also verify that then the method for the embodiment of the invention can further include to the E-seal that adds:
Step S1, the file that needs are verified are uploaded onto the server.
Step S2, server extract E-seal from the file that adds E-seal, thereby generate two files, and one is the source document that does not add E-seal, and one is the E-seal of this document
Step S3, from server, download the E-seal extract and the file that does not add E-seal respectively.
The source document that step S4, basis are not added E-seal generates second standard message summary.
Step S5,, from the E-seal of downloading, extract watermark information through digital watermark, according to PKI watermark information is deciphered, obtain eap-message digest to be verified.
Step S6,, second standard message summary and eap-message digest to be verified are mated, if mate successfully (promptly second standard message is made a summary identical with eap-message digest to be verified), then definite this document is verified and is passed through; Otherwise, confirm this document authentication failed.
The PKI here (being the PKI of signer) can be that user terminal is downloaded from network side, also can be to store on the user terminal in advance.
After coupling is accomplished, can also show the result of coupling.
Want this document is verified such as: verifier, obtain signature file after, the verifier at first extracts the eap-message digest A of this signature file other content except that E-seal; Utilize digital watermark from E-seal, to extract watermark information then, use the PKI of signer M to decipher this watermark information, suppose that the message that obtains is B; If A=B; Think that then the document is complete, be not modified, and signer is M; If A ≠ B then thinks authentication failed, the document is modified, and perhaps signer is not M.
Wherein, the executive agent of the embodiment of the invention can be a portable terminal, such as mobile phone or other handheld mobile devices.
As shown in Figure 5, second kind of method that realizes E-seal of the embodiment of the invention comprises:
Step 501, portable terminal are uploaded the file that need sign to server.
Step 502, return and upload success message uploading successfully the back server.
Step 503, portable terminal carry out data signature to file, generate E-seal.
Step 504, portable terminal are uploaded E-seal to server.
Step 505, return and upload success message uploading successfully the back server.
Step 506, server add E-seal in the file to.
Step 507, server return the interpolation success message to portable terminal.
Step 508, portable terminal are downloaded the file that adds E-seal from server.
As shown in Figure 6, the method for embodiment of the invention checking E-seal comprises:
Wherein, step 602 and step 603 do not have inevitable sequencing, promptly can first execution in step 602, and back execution in step 603; All right first execution in step 603, back execution in step 602; Can also while execution in step 602 and step 603.
From the foregoing description, can find out: the embodiment of the invention is handled file according to prestored digital certificate, obtains the corresponding digital signature of this document; According to digital signature that obtains and prestored electronic seal image, generate E-seal; Send E-seal to server, be used for indicating server to add E-seal to this document.
Because the user can realize the E-seal function through portable terminal, thereby improve the professional dirigibility of mobile office, expanded the professional application of mobile office;
Further improved professional efficient and the user experience of mobile office.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. a method that realizes E-seal is characterized in that, this method comprises:
According to prestored digital certificate file is handled, obtained the corresponding digital signature of this document;
According to digital signature that obtains and prestored electronic seal image, generate E-seal;
Send said E-seal to server, be used for indicating said server to add said E-seal to this document;
When needs are verified file, the file that adds said E-seal is uploaded onto the server, indicate said server from the file that adds E-seal, to extract E-seal;
From said server, download E-seal and the file of removing E-seal;
According to the content of the file of removing E-seal, generate second standard message summary;
From the said E-seal of downloading, extract watermark information through digital watermark;
According to PKI said watermark information is deciphered, obtained eap-message digest to be verified;
Said second standard message summary and said eap-message digest to be verified are mated, if mate successfully, then definite this document checking is passed through; Otherwise, confirm this document authentication failed.
2. the method for claim 1 is characterized in that, saidly according to prestored digital certificate file is handled, and obtains the corresponding digital signature of this document and comprises:
According to the content of file, first standard message of spanned file summary;
Confirm the private key of prestored digital certificate;
According to the private key of said digital certificate, the eap-message digest that generates is encrypted, obtain digital signature.
3. the method for claim 1 is characterized in that, this method also comprises:
After said server adds to said E-seal in this document, from said server, download the file that adds said E-seal.
4. the method for claim 1 is characterized in that, said file be from said server, download or in advance the storage;
If said file is stored in advance, then, also sends said server said file when sending said E-seal.
5. a system that realizes E-seal is characterized in that, this system comprises: portable terminal and server;
Signature blocks in the portable terminal is used for according to prestored digital certificate file being handled, and obtains the corresponding digital signature of this document;
Generation module in the portable terminal is used for generating E-seal according to the digital signature and the prestored electronic seal image that obtain;
Sending module in the portable terminal is used for sending said E-seal to server, is used for indicating said server to add said E-seal to this document;
Authentication module in the portable terminal is used for the file that adds said E-seal is uploaded onto the server, and indicates said server from the file that adds E-seal, to extract E-seal; From said server, download E-seal and the file of removing E-seal; According to the content of the file of removing E-seal, generate second standard message summary; From the said E-seal of downloading, extract watermark information through digital watermark; According to PKI said watermark information is deciphered, obtained eap-message digest to be verified; Said second standard message summary and said eap-message digest to be verified are mated, if mate successfully, then definite this document checking is passed through; Otherwise, confirm this document authentication failed;
Server is used for adding the said E-seal of receiving to this document.
6. system as claimed in claim 5 is characterized in that, said signature blocks is used for:
According to the content of file, first standard message of spanned file is made a summary, and confirms the private key of prestored digital certificate, according to the private key of said digital certificate, the eap-message digest that generates is encrypted, and obtains digital signature.
7. system as claimed in claim 5 is characterized in that, said portable terminal also comprises:
Processing module is used for after said server adds said E-seal to this document, from said server, downloads the file that adds said E-seal.
8. system as claimed in claim 5 is characterized in that, said file is that portable terminal that said portable terminal is downloaded from said server or said is stored in advance;
If said file is stored in advance, then said sending module also is used for:
, also sends said server said file when sending said E-seal.
9. a portable terminal of realizing E-seal is characterized in that, this portable terminal comprises:
Signature blocks is used for according to prestored digital certificate file being handled, and obtains the corresponding digital signature of this document;
Generation module is used for generating E-seal according to the digital signature and the prestored electronic seal image that obtain;
Sending module is used for sending said E-seal to server, is used for indicating said server to add said E-seal to this document;
Authentication module is used for the file that adds said E-seal is uploaded onto the server, and indicates said server from the file that adds E-seal, to extract E-seal; From said server, download E-seal and the file of removing E-seal; According to the content of the file of removing E-seal, generate second standard message summary; From the said E-seal of downloading, extract watermark information through digital watermark; According to PKI said watermark information is deciphered, obtained eap-message digest to be verified; Said second standard message summary and said eap-message digest to be verified are mated, if mate successfully, then definite this document checking is passed through; Otherwise, confirm this document authentication failed.
10. portable terminal as claimed in claim 9 is characterized in that, said signature blocks is used for:
According to the content of file, first standard message of spanned file is made a summary, and confirms the private key of prestored digital certificate, according to the private key of said digital certificate, the eap-message digest that generates is encrypted, and obtains digital signature.
11. portable terminal as claimed in claim 9 is characterized in that, said portable terminal also comprises:
Processing module is used for after said server adds said E-seal to this document, from said server, downloads the file that adds said E-seal.
12. portable terminal as claimed in claim 9 is characterized in that, said file is that said signature blocks is downloaded from said server or storage in advance;
If said file is stored in advance, then said sending module also is used for:
, also sends said server said file when sending said E-seal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101784053A CN101655946B (en) | 2009-09-24 | 2009-09-24 | Method, system and equipment for realizing electronic seal |
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| CN2009101784053A CN101655946B (en) | 2009-09-24 | 2009-09-24 | Method, system and equipment for realizing electronic seal |
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| CN101655946A CN101655946A (en) | 2010-02-24 |
| CN101655946B true CN101655946B (en) | 2012-08-01 |
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| CN2009101784053A Active CN101655946B (en) | 2009-09-24 | 2009-09-24 | Method, system and equipment for realizing electronic seal |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542521A (en) * | 2010-12-17 | 2012-07-04 | 周佳 | Electronic seal and electronic device |
| CN102394754A (en) * | 2011-11-14 | 2012-03-28 | 宇龙计算机通信科技(深圳)有限公司 | Method for generation of hand-written signature by utilizing fingerprint and communication terminal |
| CN104766029B (en) * | 2014-01-03 | 2018-01-16 | 航天信息股份有限公司 | The method and apparatus that the close Electronic Signature processing of state is carried out to PDF document |
| CN104298899A (en) * | 2014-08-29 | 2015-01-21 | 苏州蓝恩信息科技有限公司 | Method for manually signing electronic data based on file summary information |
| CN107239687A (en) * | 2016-03-29 | 2017-10-10 | 卓望数码技术（深圳）有限公司 | E-seal management method and system based on digital certificate |
| CN105791414A (en) * | 2016-04-05 | 2016-07-20 | 江苏国泰新点软件有限公司 | Electronic bidding document signing method, electronic bidding document signing server and electronic bidding document signing client |
| CN107368747A (en) * | 2016-05-11 | 2017-11-21 | 中兴通讯股份有限公司 | A kind of mobile office method, service end, client and system |
| CN108460289A (en) * | 2016-12-13 | 2018-08-28 | 中国电信股份有限公司 | The methods, devices and systems of E-seal are realized based on Subscriber Identity Module |
| CN110119235A (en) * | 2018-02-07 | 2019-08-13 | 阿里巴巴集团控股有限公司 | Realize the method, apparatus, signature terminal and signature server of Electronic Signature |
| CN110110531A (en) * | 2019-03-11 | 2019-08-09 | 广西贝莱德电子科技有限公司 | Method for generating electronic seal with seal approval anti-counterfeiting information |
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| CN101241569A (en) * | 2008-03-07 | 2008-08-13 | 北京华大恒泰科技有限责任公司 | Electronic signature method and device and system |
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| CN101311950A (en) * | 2007-05-25 | 2008-11-26 | 北京书生国际信息技术有限公司 | Electronic stamp realization method and device |
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