CN102799809A - Tamper-resistant system for electronic signature - Google Patents
Tamper-resistant system for electronic signature Download PDFInfo
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- CN102799809A CN102799809A CN2012102026134A CN201210202613A CN102799809A CN 102799809 A CN102799809 A CN 102799809A CN 2012102026134 A CN2012102026134 A CN 2012102026134A CN 201210202613 A CN201210202613 A CN 201210202613A CN 102799809 A CN102799809 A CN 102799809A
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- 230000002093 peripheral effect Effects 0.000 description 2
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Abstract
The invention discloses a tamper-resistant system for an electronic signature. The tamper-resistant system for the electronic signature comprises a planning domain definition language (PDDL) conversion device, a picture generation device, a signature identification device and a portable document format (PDF) conversion device, wherein the PDDL conversion device is used for converting acceptance form data into the PDDL data; the picture generation device is used for generating an acceptance form picture according to the PDDL data; the signature identification device is used for identifying a handwritten signature of a user; and the PDF conversion device is used for converting the acceptance form picture which is signed by handwriting by the user into a PDF file. By defining a PDDL data protocol, supporting the generation of a general acceptance form data picture, and directly signing on the picture by handwriting, what you see is what you get, the signature is synthesized directly without storing signature data, so that the security of the signature is improved; paperless office and electronic data management are realized; and the aims of saving energy and reducing emission are fulfilled.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of electronic signature tamper resistant systems.
Background technology
The handwritten signature of accepting based on the intelligent terminal platform service requires to be applied to the handwritten signature on the service handling list, accomplishes the professional affirmation of accepting.Prior art generally adopts peripheral hardware to provide support and is applied on the unintelligent terminal platform, is not based on the handwritten signature of the platform of intelligent terminal, corresponding mention for outer if all need the equipment support.
For example; Application number is CN201110255294, and denomination of invention comprises flat-panel monitor, handwriting pad and writing pencil for the one Chinese patent application of " the hand-written display screen of a kind of pressure sensitivity " discloses the hand-written display screen of a kind of pressure sensitivity; Flat-panel monitor comprises display panel and backboard; Display panel is fixed on the backboard, has the opening that is complementary with the handwriting pad size on the backboard, and handwriting pad is embedded in the opening and is fixed in the bottom of display panel.Writing pencil is the pressure sensitive writing pencil.Technique effect of the present invention is; Increase handwriting pad at the display screen back side; In the regulation zone of display, use pressure sensi-tive pen effectively to sign electronically; Hand-written book goes out to have the electronic signature of pressure sensitivity effect, makes that electronic signature is the same with traditional handwritten signature effect, has reduced the operation cost of bank again.The present invention has simple in structure, and it is directly perceived to have a nature, and high reading speed and high precision have realized characteristics such as trustworthy signature audit function, are applicable to various self-aided terminals, ATM, VTM machine.
Application number is CN200510027649; Patent name is the method that the one Chinese patent application of " method of number of files word signature and realization E-seal and handwritten signature " discloses a kind of number of files word signature and realization E-seal and handwritten signature, and wherein this digital signature method comprises that secured environment initialization operation, generation digital signature are operated and the verification operation of digital signature; The method of this E-seal comprises this signature of checking position that perhaps stamped signature is effective, the acquisition current document needs stamped signature, selects seal, inserts the seal picture and document is carried out digital signature; The method of this handwritten signature comprise checking this signature or seal effectively, start handwriting input device and initialization, from clipbook obtain handwritten input information, selected insertion handwritten signature the position, handwritten input information is inserted the document, obtains certificate that the active user holds, document is carried out digital signature.Adopt this kind method, security is higher, and handwritten signature and digital signature tight binding have constituted a complete computer document secure certification architecture together jointly, have strengthened the scope of application, and is very convenient quick to its operating process of user simultaneously.
There is following defective in existing technical data transmission: 1) the peripheral hardware hardware supports only is provided, can not combines with existing intelligent terminal platform.2) can not support general service handling free hand drawing sheet to generate, accomplish and do after the Signature Confirmation as a wholely that What You See Is What You Get can only synthesize data and original data of signature, possibly have the stolen risk of signed data, security has also been lowered greatly.
Summary of the invention
In order to solve the lower technical matters of signed data security in the prior art, the present invention proposes a kind of electronic signature tamper resistant systems, comprising:
The PDDL conversion equipment is used for data and will accepts forms data and convert the PDDL data into;
The picture generating apparatus is used for generating according to the PDDL data and accepts the free hand drawing sheet;
The signature recognition device is used to discern user's handwritten signature;
The PDF conversion equipment is used for converting the free hand drawing sheet of accepting that the user carries out after the handwritten signature into pdf document.
Said picture generating apparatus is used to resolve the PDDL data; Judged whether overall situation setting, if, the overall situation is set, carry out next step judgement, if not, directly carry out next step judgement; Judged whether that blocks of data puts, if, carry out next step judgement, if not, generate and accept the free hand drawing sheet; Judged whether the blocks of data setting, if, carrying out the localized mass setting, next step is carried out in the back, if not, directly carry out next step; Get blocks of data, generate and accept the free hand drawing sheet.
Said PDDL data comprise two parts; A part is an overall situation setting; A part is blocks of data and piece setting, and concrete attribute comprises: whether whether whether underscore, runic, anti-white, font size, alignment thereof, line space, word space be used for mark and accept singles and print the content display mode.
Said signature recognition device is used for through writing down the coordinate of present touch screen point, in the touch screen moving process; Trigger current touch screen coordinate and change, and then draw from remembering coordinate to this coordinate line, the new record of laying equal stress on memory coordinate; The thickness of line finishes until touch screen through the screen calculation of pressure.
System also comprises encryption device, is used for said PDF document is encrypted, and adopts hash value to calculate the MD5 value of PDF document; Said MD5 value is carried out DES3 encrypt, obtain ciphertext; The ciphertext value is write in the pdf document.
Said encryption device is used for ciphertext is filled into back 128 of document flow, 128 of less thaies, fills with special character and to form new document flow and write together in the database, forms the document after the signature.
System also comprises calibration equipment, is used for the PDF document after the said encryption is carried out verification, from database, takes out pdf document stream; Through the DES3 decrypting ciphertext, reduction generates the MD5 value; Remaining document flow is adopted Hash cryptographic hash calculation document MD5 value; Relatively whether two MD5 values are identical, and as identical, then document is not distorted.
Said calibration equipment is used for taking out ciphertext from back 128 characters of document flow, from 128, obtains ciphertext.
Electronic signature tamper resistant systems of the present invention through definition PDDL data protocol, supports the general forms data picture of accepting to generate; And directly on picture, carrying out handwritten signature, What You See Is What You Get is not preserved signed data; Directly synthetic, as to have improved signature security has realized with no paper office; The electronization data management reaches the energy-saving and emission-reduction purpose.
Description of drawings
Fig. 1 is the sign electronically structural drawing of tamper resistant systems of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
As shown in Figure 1, the present invention proposes a kind of electronic signature tamper resistant systems and comprises:
The PDDL conversion equipment is used for data and will accepts forms data and convert the PDDL data into;
The picture generating apparatus is used for generating according to the PDDL data and accepts the free hand drawing sheet;
The signature recognition device is used to discern user's handwritten signature;
The PDF conversion equipment is used for converting the free hand drawing sheet of accepting that the user carries out after the handwritten signature into pdf document.
Said picture generating apparatus is used to resolve the PDDL data; Judged whether overall situation setting, if, the overall situation is set, carry out next step judgement, if not, directly carry out next step judgement; Judged whether that blocks of data puts, if, carry out next step judgement, if not, generate and accept the free hand drawing sheet; Judged whether the blocks of data setting, if, carrying out the localized mass setting, next step is carried out in the back, if not, directly carry out next step; Get blocks of data, generate and accept the free hand drawing sheet.
Said PDDL data comprise two parts; A part is an overall situation setting; A part is blocks of data and piece setting, and concrete attribute comprises: whether whether whether underscore, runic, anti-white, font size, alignment thereof, line space, word space be used for mark and accept singles and print the content display mode.
Said signature recognition device is used for through writing down the coordinate of present touch screen point, in the touch screen moving process; Trigger current touch screen coordinate and change, and then draw from remembering coordinate to this coordinate line, the new record of laying equal stress on memory coordinate; The thickness of line finishes until touch screen through the screen calculation of pressure.
System also comprises encryption device, is used for said PDF document is encrypted, and adopts hash value to calculate the MD5 value of PDF document; Said MD5 value is carried out DES3 encrypt, obtain ciphertext; The ciphertext value is write in the pdf document.
Said encryption device is used for ciphertext is filled into back 128 of document flow, 128 of less thaies, fills with special character and to form new document flow and write together in the database, forms the document after the signature.
System also comprises calibration equipment, is used for the PDF document after the said encryption is carried out verification, from database, takes out pdf document stream; Through the DES3 decrypting ciphertext, reduction generates the MD5 value; Remaining document flow is adopted Hash cryptographic hash calculation document MD5 value; Relatively whether two MD5 values are identical, and as identical, then document is not distorted.
Said calibration equipment is used for taking out ciphertext from back 128 characters of document flow, from 128, obtains ciphertext.
Electronic signature tamper resistant systems of the present invention through definition PDDL data protocol, supports the general forms data picture of accepting to generate; And directly on picture, carrying out handwritten signature, What You See Is What You Get is not preserved signed data; Directly synthetic, as to have improved signature security has realized with no paper office; The electronization data management reaches the energy-saving and emission-reduction purpose.
What should explain is: above embodiment is only unrestricted in order to explanation the present invention, and the present invention also is not limited in above-mentioned giving an example, and all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the claim scope of the present invention.
Claims (8)
1. an electronic signature tamper resistant systems is characterized in that, comprising:
The PDDL conversion equipment is used for data and will accepts forms data and convert the PDDL data into;
The picture generating apparatus is used for generating according to the PDDL data and accepts the free hand drawing sheet;
The signature recognition device is used to discern user's handwritten signature;
The PDF conversion equipment is used for converting the free hand drawing sheet of accepting that the user carries out after the handwritten signature into pdf document.
2. electronic signature tamper resistant systems according to claim 1 is characterized in that, said picture generating apparatus is used to resolve the PDDL data; Judged whether overall situation setting, if, the overall situation is set, carry out next step judgement, if not, directly carry out next step judgement; Judged whether that blocks of data puts, if, carry out next step judgement, if not, generate and accept the free hand drawing sheet; Judged whether the blocks of data setting, if, carrying out the localized mass setting, next step is carried out in the back, if not, directly carry out next step; Get blocks of data, generate and accept the free hand drawing sheet.
3. electronic signature tamper resistant systems according to claim 1; It is characterized in that; Said PDDL data comprise two parts, and a part is an overall situation setting, and a part is blocks of data and piece setting; Concrete attribute comprises: whether whether whether underscore, runic, anti-white, font size, alignment thereof, line space, word space be used for mark and accept singles and print the content display mode.
4. electronic signature tamper resistant systems according to claim 1 is characterized in that, said signature recognition device; Be used for through writing down the coordinate of present touch screen point, in the touch screen moving process, trigger current touch screen coordinate and change; And then draw from the memory coordinate to this coordinate line; The new record of laying equal stress on memory coordinate, the thickness of line finishes until touch screen through the screen calculation of pressure.
5. electronic signature tamper resistant systems according to claim 1 is characterized in that, also comprises encryption device, is used for said PDF document is encrypted, and adopts hash value to calculate the MD5 value of PDF document; Said MD5 value is carried out DES3 encrypt, obtain ciphertext; The ciphertext value is write in the pdf document.
6. electronic signature tamper resistant systems according to claim 5; It is characterized in that said encryption device is used for ciphertext is filled into back 128 of document flow; 128 of less thaies, fill to form new document flow with special character and write together in the database, form the document after the signature.
7. electronic signature tamper resistant systems according to claim 5 is characterized in that, also comprises calibration equipment, is used for the PDF document after the said encryption is carried out verification, from database, takes out pdf document stream; Through the DES3 decrypting ciphertext, reduction generates the MD5 value; Remaining document flow is adopted Hash cryptographic hash calculation document MD5 value; Relatively whether two MD5 values are identical, and as identical, then document is not distorted.
8. electronic signature tamper resistant systems according to claim 7 is characterized in that, said calibration equipment is used for taking out ciphertext from back 128 characters of document flow, from 128, obtains ciphertext.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210202613.4A CN102799809B (en) | 2012-06-19 | 2012-06-19 | Tamper-resistant system for electronic signature |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210202613.4A CN102799809B (en) | 2012-06-19 | 2012-06-19 | Tamper-resistant system for electronic signature |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410707990.2A Division CN104463021A (en) | 2012-06-19 | 2012-06-19 | High-safety electronic-signature tampering preventing system |
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| Publication Number | Publication Date |
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| CN102799809A true CN102799809A (en) | 2012-11-28 |
| CN102799809B CN102799809B (en) | 2015-01-28 |
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| CN201210202613.4A Expired - Fee Related CN102799809B (en) | 2012-06-19 | 2012-06-19 | Tamper-resistant system for electronic signature |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105117182A (en) * | 2015-09-09 | 2015-12-02 | 西南大学 | Electronic signature system integrated method based on virtual printing |
| CN105139188A (en) * | 2015-09-09 | 2015-12-09 | 西南大学 | On-line electronic contract signing method based on mobile terminal |
| CN106330459A (en) * | 2016-08-25 | 2017-01-11 | 杭州天谷信息科技有限公司 | Electronic keyword signature method |
| CN113282963A (en) * | 2020-02-20 | 2021-08-20 | 中国移动通信集团重庆有限公司 | Electronic signature verification method, device and equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364294A (en) * | 2008-09-28 | 2009-02-11 | 宇龙计算机通信科技(深圳)有限公司 | Manually signing method and mobile terminal |
| CN101609488A (en) * | 2008-06-18 | 2009-12-23 | 上海格尔软件股份有限公司 | Electric endorsement method based on screen capture technology |
| CN101777058A (en) * | 2009-12-08 | 2010-07-14 | 江苏省电力试验研究院有限公司 | Document management system |
| CN101826013A (en) * | 2010-03-31 | 2010-09-08 | 北京交通大学 | Visual method of operation action in intelligent planning system |
-
2012
- 2012-06-19 CN CN201210202613.4A patent/CN102799809B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609488A (en) * | 2008-06-18 | 2009-12-23 | 上海格尔软件股份有限公司 | Electric endorsement method based on screen capture technology |
| CN101364294A (en) * | 2008-09-28 | 2009-02-11 | 宇龙计算机通信科技(深圳)有限公司 | Manually signing method and mobile terminal |
| CN101777058A (en) * | 2009-12-08 | 2010-07-14 | 江苏省电力试验研究院有限公司 | Document management system |
| CN101826013A (en) * | 2010-03-31 | 2010-09-08 | 北京交通大学 | Visual method of operation action in intelligent planning system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105117182A (en) * | 2015-09-09 | 2015-12-02 | 西南大学 | Electronic signature system integrated method based on virtual printing |
| CN105139188A (en) * | 2015-09-09 | 2015-12-09 | 西南大学 | On-line electronic contract signing method based on mobile terminal |
| CN105117182B (en) * | 2015-09-09 | 2018-10-30 | 西南大学 | A kind of electronic signature system integration method based on virtual printing |
| CN106330459A (en) * | 2016-08-25 | 2017-01-11 | 杭州天谷信息科技有限公司 | Electronic keyword signature method |
| CN113282963A (en) * | 2020-02-20 | 2021-08-20 | 中国移动通信集团重庆有限公司 | Electronic signature verification method, device and equipment |
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| CN102799809B (en) | 2015-01-28 |
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Free format text: CORRECT: ADDRESS; FROM: 215699 SUZHOU, JIANGSU PROVINCE TO: 215600 SUZHOU, JIANGSU PROVINCE Free format text: CORRECT: INVENTOR; FROM: SONG GUOHUA DENG MEI XU DAN TO: JI YUN JIANG DAYANG |
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Effective date of registration: 20141229 Address after: 215600 A, 1, science and Technology Pioneer Park, 410 Cathay Pacific Road, Zhangjiagang Economic Development Zone, Jiangsu, Suzhou, China Applicant after: Ji Yun Address before: Suzhou City, Jiangsu province 215699 Zhangjiagang Yang Jiyang Road No. 136 Applicant before: Zhangjiagang Hongjia Digital Technology Co., Ltd. |
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Effective date of registration: 20200722 Address after: No.372 Xinbei street, Beishi District, Baoding City, Hebei Province Co-patentee after: Cui Guosheng Patentee after: Chen Jiao Co-patentee after: Li Qian Co-patentee after: Li Ran Co-patentee after: Li Shijie Co-patentee after: Liu Guiqin Co-patentee after: Liu Jinying Co-patentee after: Liu Xiufen Co-patentee after: Luo Jianhua Co-patentee after: Mei Zhu Co-patentee after: Pang Youjiang Co-patentee after: Fan Yonggang Co-patentee after: Feng Shaowu Co-patentee after: Gao Jing Co-patentee after: Guo Youhua Co-patentee after: Huang Zhiyong Co-patentee after: Jiao Hongmei Co-patentee after: Li Jinsuo Co-patentee after: Li Ning Address before: 410, block a, science and technology entrepreneurship Park, No. 1, Guotai North Road, Zhangjiagang Economic Development Zone Patentee before: Ji Yun |
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