CN101814120A - Word document data transfer based on digital watermarking - Google Patents
Word document data transfer based on digital watermarking Download PDFInfo
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- CN101814120A CN101814120A CN201010121991A CN201010121991A CN101814120A CN 101814120 A CN101814120 A CN 101814120A CN 201010121991 A CN201010121991 A CN 201010121991A CN 201010121991 A CN201010121991 A CN 201010121991A CN 101814120 A CN101814120 A CN 101814120A
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Abstract
Word document data transfer based on digital watermarking is a method for protecting the work document information with secret, belonging to the field of computer information security. The invention aims to protect the security and the integrity of the information of the document with secret and prevent reading, deleting, copying, duplicating and editing the information of the document with secret without authorization. The invention adopts the digital watermarking and data transfer technology, so that the user, without authorization, can not read the real document contents but read a document with information without secret, which is generated by a Hash mapping table. Therefore, the document without secret generated by the generated Hash mapping table hides the information of the document with secret. The invention is convenient to operate, high in stability and security and has broad prospect in the field of protecting the information of the word document with secret.
Description
Technical field
Patent of the present invention belongs to field of computer information security, is specifically related to a kind of a kind of method of protecting concerning security matters word document security and integrality.
Background technology
Show according to relevant authoritative department statistics, along with every profession and trade produce, the level of informatization increases day by day in the management, the computing machine behavior of divulging a secret is also in rising trend.And computing machine is divulged a secret maximum characteristics exactly than generally occupying case, and its means are more hidden, harm is also bigger.The secret leakage incident of a malice tends to cause consequence difficult to the appraisal to enterprise: gently then need to drop into a huge sum of money and remedy, heavyly then an enterprise can be put to death.AUTHORITATIVE DATA shows, nearly all Chinese Enterprise to document all without any safeguard procedures.Even and, be to use traditional encryption method only to security files having been taked safeguard measure.
A few days ago, an investigation about enterprise information security has been carried out at the information-based responsible official of 358 enterprises in the SearchSecurity website.The result of investigation shows that enterprise's secret reveals 30%～40% at present, causes by the leakage of e-file, and the company of last thousand families of " wealth " rank, each document is revealed the loss that causes and is about 4,000,000 US dollars.
The direct or indirect leakage of security files mostly is under various situation in the air with destroying, and uncommitted user carries out taking place in the operating process of security files; Even enterprise or individual have taked encryption measures, the hacker also can decipher in the relatively shorter time, thereby cause a large amount of concerning security matters, core document have a mind to/to leak unintentionally and run off lostly often, corroding concerning security matters assets and core competitiveness just as leech is continuous.The massive losses that brings could be saved and be remedied already in case arrived The game is over! Traditional encryption method has been subjected to unprecedented challenge along with the continuous raising of computer computation ability!
Along with the development of hacking technique, the shortcoming of conventional cryptography document begins to expose gradually, and for better protection security files user can only increase the length of key, but along with the growth of key length, the memory key just becomes a problem! Encrypting simultaneously also exists a fatal focus to be exactly, the user open file see be a string mess code or the prompting user import key, this just is equivalent to tell others this is very important document, the hacker will crack your encrypted document specially so, no matter whether the hacker can crack your encrypted document, encrypt just be equivalent to point out others' encrypted document importance, such way tends to cause immeasurable loss!
Summary of the invention
1, a kind of method of using the protection concerning security matters word document information of digital watermarking and data transfer technology, its step are to hide non-concerning security matters word document, Hash mapping, data transfer.
2, summary of the invention 1 described hiding non-concerning security matters word document comprises following steps:
With x (15＜
"X＜
"200) the non-concerning security matters word document of a piece of writing is hidden in the file under some catalogues of computing machine (as picture and video), and this hiding process has adopted digital watermark technology and user to carry out automatically when mounted.
3, summary of the invention 1 described Hash mapping comprises following steps:
The utilization hash algorithm is set up one group of mapping with concerning security matters word document with by the non-concerning security matters word document that adopts digital watermark technology to be hidden in the file under the some catalogues of computing machine, forms a Hash mapping table;
Under the situation that the user does not obtain the authorization, the Hash mapping table will be activated; Under the situation that the user obtains the authorization, the Hash mapping table will temporarily be closed;
Under the situation that the user obtains the authorization, use (deletion, copy, duplicate, editor) behind the concerning security matters word document, concerning security matters word document will be set up one group of new mapping with the non-concerning security matters word document in the file that is hidden in by the employing digital watermark technology under the some catalogues of computing machine, form a new Hash mapping table.The user is using (deletion, copy duplicates, editor) concerning security matters word document without permission, and this Hash mapping table can not change.
4, summary of the invention 1 described data shift, and comprise following steps:
It is under the situation of authentication code authentification failure that data shift, the concerning security matters word document of the current use of user will be shifted and replace by non-concerning security matters word document by the mapping relations between these concerning security matters word document in the Hash mapping table and the non-concerning security matters word document, shift thereby finish data;
The authentication of authentication code is adopted cryptographic algorithm and it is solidificated in USB lock of formation on the movable storage device, and under the situation of not using the USB lock, user's input authentication sign indicating number can not pointed out by system; The user can only be by USB lock ability input authentication sign indicating number, and under the situation of authentication code authentication success, system does not carry out data and shifts, and the user can read and use (deletion, copy duplicates, editor) concerning security matters word document;
Embodiment
Embodiment one: when the user used the present invention to protect security files word, the assailant can't read the document information that arrive real concerning security matters under unwarranted situation.
The assailant is under unwarranted situation; the word document that visit is protected by the present invention; what open but is a non-concerning security matters word document; the assailant just think immediately this be a common document rather than he to seek security files; so will abandon attacking, and then remove to open other document at once.If assailant's document that computing machine is all copies, the assailant also can only copy non-concerning security matters word document to so.
Embodiment two: tell in advance and moved program of the present invention on assailant's computing machine, but USB is not provided lock.The assailant still can't open concerning security matters word document.
The assailant has on knowing this computing machine after the bottom drawer program, under the situation that does not have the USB lock, can't find the interface of input authentication sign indicating number, and promptly the user can't finish the operation of input authentication sign indicating number, more can't import correct authentication code.Therefore, the assailant still read and use (deletion, the copy, duplicate, editor) be non-concerning security matters word document.
Embodiment two: tell in advance and moved the bottom drawer program on assailant's computing machine, and authentication code authentication movable storage device is provided.The assailant still is difficult to open concerning security matters word document.
Though the assailant has had the interface of input authentication sign indicating number, the present invention has used cryptographic algorithm.The assailant adopts the way that is broken to the world to attack authentication code.But need cost just can break through authentication code for a long time.
Claims (4)
1. a method of using the protection concerning security matters word document information of digital watermarking and data transfer technology is characterized in that hiding non-concerning security matters word document, Hash mapping, data transfer.
2. claim 1 is described hides non-concerning security matters word document, and its feature comprises following steps:
With x (15＜
"X＜
"200) the non-concerning security matters word document of a piece of writing is hidden in the file under some catalogues of computing machine (as picture and video), and this hiding process has adopted digital watermark technology and user to carry out automatically when mounted.
3. the described Hash mapping of claim 1, its feature comprises following steps:
The utilization hash algorithm is set up one group of mapping with concerning security matters word document with by the non-concerning security matters word document that adopts digital watermark technology to be hidden in the file under the some catalogues of computing machine, forms a Hash mapping table;
Under the situation that the user does not obtain the authorization, the Hash mapping table will be activated; Under the situation that the user obtains the authorization, the Hash mapping table will temporarily be closed;
Under the situation that the user obtains the authorization, use (deletion, copy, duplicate, editor) behind the concerning security matters word document, concerning security matters word document will be set up one group of new mapping with the non-concerning security matters word document in the file that is hidden in by the employing digital watermark technology under the some catalogues of computing machine, form a new Hash mapping table.The user is using (deletion, copy duplicates, editor) concerning security matters word document without permission, and this Hash mapping table can not change.
4. the described data of claim 1 shift, and its feature comprises following steps:
It is under the situation of authentication code authentification failure that data shift, the concerning security matters word document of the current use of user will be shifted and replace by non-concerning security matters word document by the mapping relations between these concerning security matters word document in the Hash mapping table and the non-concerning security matters word document, shift thereby finish data;
The authentication of authentication code is adopted cryptographic algorithm and it is solidificated in USB lock of formation on the movable storage device, and under the situation of not using the USB lock, user's input authentication sign indicating number can not pointed out by system;
The user can only be by USB lock ability input authentication sign indicating number, and under the situation of authentication code authentication success, system does not carry out data and shifts, and the user can read and use (deletion, copy duplicates, editor) concerning security matters word document.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010121991A CN101814120A (en) | 2010-03-11 | 2010-03-11 | Word document data transfer based on digital watermarking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010121991A CN101814120A (en) | 2010-03-11 | 2010-03-11 | Word document data transfer based on digital watermarking |
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| CN101814120A true CN101814120A (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010121991A Pending CN101814120A (en) | 2010-03-11 | 2010-03-11 | Word document data transfer based on digital watermarking |
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| CN (1) | CN101814120A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254565A (en) * | 2010-05-18 | 2011-11-23 | 杨海军 | Method for protecting digital video works based on TG (Theme Gallery) information safety concept |
| CN106709852A (en) * | 2015-08-13 | 2017-05-24 | 新人类资讯科技股份有限公司 | Method for generating watermark file and electronic device |
| WO2017092151A1 (en) * | 2015-12-03 | 2017-06-08 | 福建福昕软件开发股份有限公司 | Method for creating garbled pdf text |
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| CN1897522A (en) * | 2005-07-15 | 2007-01-17 | 国际商业机器公司 | Water mark embedded and/or inspecting method, device and system |
| CN101149770A (en) * | 2007-09-21 | 2008-03-26 | 中山大学 | Electronic stamp system based on Word/Excel electronic document |
| CN101271497A (en) * | 2008-04-30 | 2008-09-24 | 李硕 | Electric document anti-disclosure system and its implementing method |
| CN101291224A (en) * | 2007-04-17 | 2008-10-22 | 美国博通公司 | Method and system for processing data in communication system |
| US20090024854A1 (en) * | 2007-07-18 | 2009-01-22 | Canon Kabushiki Kaisha | Document outputting apparatus, control method thereof, and document output system |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897522A (en) * | 2005-07-15 | 2007-01-17 | 国际商业机器公司 | Water mark embedded and/or inspecting method, device and system |
| CN1731312A (en) * | 2005-09-02 | 2006-02-08 | 北京北大方正电子有限公司 | An anti-copy method for documents |
| CN101291224A (en) * | 2007-04-17 | 2008-10-22 | 美国博通公司 | Method and system for processing data in communication system |
| US20090024854A1 (en) * | 2007-07-18 | 2009-01-22 | Canon Kabushiki Kaisha | Document outputting apparatus, control method thereof, and document output system |
| CN101149770A (en) * | 2007-09-21 | 2008-03-26 | 中山大学 | Electronic stamp system based on Word/Excel electronic document |
| CN101271497A (en) * | 2008-04-30 | 2008-09-24 | 李硕 | Electric document anti-disclosure system and its implementing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254565A (en) * | 2010-05-18 | 2011-11-23 | 杨海军 | Method for protecting digital video works based on TG (Theme Gallery) information safety concept |
| CN106709852A (en) * | 2015-08-13 | 2017-05-24 | 新人类资讯科技股份有限公司 | Method for generating watermark file and electronic device |
| WO2017092151A1 (en) * | 2015-12-03 | 2017-06-08 | 福建福昕软件开发股份有限公司 | Method for creating garbled pdf text |
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Addressee: Yang Haijun Document name: Notification of Patent Invention Entering into Substantive Examination Stage Addressee: Yang Haijun Document name: Notification of Decision on Request for Restoration of Right |
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Application publication date: 20100825 |