CN105930152B - A kind of method and system of anti-screenshotss - Google Patents
A kind of method and system of anti-screenshotss Download PDFInfo
- Publication number
- CN105930152B CN105930152B CN201610238759.2A CN201610238759A CN105930152B CN 105930152 B CN105930152 B CN 105930152B CN 201610238759 A CN201610238759 A CN 201610238759A CN 105930152 B CN105930152 B CN 105930152B
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- China
- Prior art keywords
- webpage
- clipbook
- content
- screenshotss
- module
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
Abstract
The present invention relates to a kind of method and system of the anti-screenshotss of webpage, comprising steps of S1, detection and judging whether webpage is opened；If so, S2 is entered step, if it is not, then repeating step S1；S2, judge whether the content in clipbook matches with the web page contents；If so, entering step S3；If it is not, then return step S1；S3, the content for including in the clipbook is emptied.A kind of method and system of the anti-screenshotss of webpage provided by the invention can entirely prevent carrying out screenshotss to browser without installing any plug-in unit.
Description
Technical field
The present invention relates to field of information security technology more particularly to a kind of method and systems of anti-screenshotss.
Background technique
Now in daily production and life, the project of confidential document management, for the purpose of secrecy, it is often necessary to forbid to text
Shelves are copied, and are downloaded, printing and screenshot.
Current solution is that screenshotss key is disabled using ActiveX plug-in unit mostly, and development difficulty is big, and is needed clear
Device of looking at installation could normal use.
The major defect of prior art is as follows:
1, development difficulty is big.
2, it needs to sign to the plug-in unit of exploitation.
3, need client that plug-in unit is installed.
Summary of the invention
The technical problem to be solved in the present invention is that solving drawbacks described above in the prior art, a kind of side of anti-screenshotss is provided
Method and system, development difficulty is big in the prior art for solution, needs to sign to the plug-in unit of exploitation, client is needed to install plug-in unit
Defect.
In order to solve the above technical problems, the present invention provides a kind of method of the anti-screenshotss of webpage, comprising steps of S1, detection
And judge whether webpage is opened；If so, S2 is entered step, if it is not, then repeating step S1；S2, judge content in clipbook
Whether matched with the web page contents；If so, entering step S3；If it is not, then return step S1；S3, the clipbook is emptied
In include content.
In one embodiment of this invention, the step S1 further comprises the steps of: the insertion in the network address front of the webpage and retouches
State label, the content in webpage described in non-print.
In one embodiment of this invention, the step S3 further comprises the steps of: the content obtained in the clipbook, if not
The content in the clipbook is got, then forcibly closes the webpage opened.
In one embodiment of this invention, S11 is further comprised the steps of: between the step S1 and the step S2, detection is
It is no to have screenshotss movement；If so, entering step S2；If it is not, then return step S1.
In one embodiment of this invention, the method that the clipbook is emptied in the step S3 includes calling function that will cut
The content of pasting board empties and calls content zero setting or any random number of the function by the clipbook.
The present invention also provides a kind of systems of the anti-screenshotss of webpage, comprising: webpage detection module, for detecting and judging net
Whether page is opened；Matching module, for judging in clipbook when the webpage detection module detects that the webpage is opened
Whether content matches with the web page contents；Empty module, for the content in the clipbook with it is described
When web page contents match, the content for including in the clipbook is emptied.
In one embodiment of this invention, the webpage detection module further include: label is inserted into unit, in the net
The front insertion of page network address describes label, the content in webpage described in non-print.
In one embodiment of this invention, the system of the anti-screenshotss of the webpage further include: module is obtained, it is described for obtaining
Content in clipbook；Webpage closedown module, for the content in the clipbook to have not been obtained in the acquisition module
When, forcibly close the webpage opened.
In one embodiment of this invention, the system of the anti-screenshotss of the webpage further include: screenshotss detection module, for detecting
Whether screenshotss movement is had.
In one embodiment of this invention, the module that empties is also used to when emptying the clipbook, calls function will
The content of clipbook empties and calls content zero setting or any random number of the function by the clipbook.
The method and system for implementing anti-screenshotss provided by the present invention, has the advantages that
Without installing any plug-in unit, can entirely prevent carrying out screenshotss to browser.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is a kind of flow diagram of one embodiment of method of the anti-screenshotss of webpage of the present invention.
Fig. 2 is a kind of block schematic illustration of one embodiment of system of the anti-screenshotss of webpage of the present invention.
Specific embodiment
In order to which the purpose of the present invention, technical solution and advantage is more clearly understood, below in conjunction with drawings and examples,
The present invention will be described in further detail.It should be understood that specific embodiment described herein is only used for explaining this hair
It is bright, it is not intended to limit the present invention.
As shown in Figure 1, Fig. 1 is a kind of flow diagram of one embodiment of method of the anti-screenshotss of webpage of the present invention.The present invention
A kind of method of anti-screenshotss of webpage is provided, comprising steps of
S1, detection simultaneously judge whether webpage is opened；If so, S2 is entered step, if it is not, then repeating step S1；System is certainly
Whether dynamic detection webpage relative program runs to judge whether webpage is opened, such as can pass through the phase in detection Program Manager
Close .exe application process to determine whether have webpage and its associated process it is in the open state or whether have webpage operation shape
In state.In the present invention, it can be also possible to detect at preset timed intervals by whether opening by real-time detection of webpage, such as
Every 50ms detection is primary.
S2, judge whether the content in clipbook matches with web page contents；If so, entering step S3；If it is not, then returning
Step S1；
In one embodiment of the invention, content in web page contents and clipbook fits through images match to realize.
Wherein, images match is divided into the matching based on gray scale and the matching based on feature.
Gray-scale Matching regards image as 2D signal with the viewpoint counted, using between the method searching signal of statistical correlation
Relevant matches.Using the correlation function of two signals, their similitude is evaluated to determine same place.Gray-scale Matching passes through benefit
With certain similarity measurement, such as correlation function, covariance function, poor quadratic sum, poor absolute value and estimate extreme value, determines two width
Corresponding relationship in image.Preferably, the Gray-scale Matching method used in the present embodiment is Normalized Grey Level matching method, substantially former
Reason is the gray matrix a realtime graphic window with a certain size pixel-by-pixel, all possible window with reference picture
Mouth gray scale array, the matching process compared is scanned for by certain method for measuring similarity, is in theory exactly using image
The relevant technologies.Can certainly be sorted related algorithm using amplitude, and the sequence of FFT related algorithm and hierarchical search judges algorithm
Deng.
Characteristic matching refers to the feature (features such as point, line, surface) by extracting two or more images respectively, to feature into
The description of row parameter, then carries out a kind of matched algorithm with described parameter.Figure handled by feature-based matching
As the feature generally comprised has color characteristic, textural characteristics, shape feature, spatial position feature etc..Characteristic matching is first to figure
As being pre-processed to extract its high-level feature, the matching corresponding relationship of feature between two images is then established, usually
The feature primitive used has point feature, edge feature and provincial characteristics.Characteristic matching need to use many such as matrixes operation,
The solution of gradient, there are also the mathematical operations such as Fourier transform and Taylor expansion.The feature extracting and matching used in the present embodiment
Method has: statistical method, geometric method, modelling, signal processing method, boundary characteristic method, fourier shape description method, geometric parameter
Method, shape invariance moments method etc..Since the characteristic point compared pixels point of image is many less, the matching process based on characteristics of image is big
Reduce the calculation amount of matching process greatly；Meanwhile the variation that the matching degree magnitude contraposition of characteristic point is set is more sensitive, it can be significantly
Improve matched levels of precision；Moreover, the extraction process of characteristic point can reduce the influence of noise, to grey scale change, image shape
Become and block etc. and well adapts to ability.
S3, the content for including in clipbook is emptied.When screenshotss, screenshotss content, which is usually stored in graphic form, is cliped and pasted
In plate, it by emptying Contents of clipboard, can understand screenshotss content, both can prevent the content in webpage from leaking out by screenshotss
It goes.In one embodiment of the invention, by calling function: " window.clipboardData.clearData ()；" Lai Shixian
The content for including in clipbook is emptied, prevents web page contents by screenshotss.
In one embodiment of this invention, step S1 is further comprised the steps of: in the network address front of webpage insertion description label, is prohibited
The only content in printing network page.Due to having printing function in webpage, in addition to preventing web page contents by screenshotss, while net is also prevented
Page content is printed.So by being inserted into description label in the network address front of webpage come non-print in one embodiment of the invention
Web page contents.Such as by calling label: "<style>@media print { * { display:none } }</style>" insertion
Non-print web page contents are carried out in network address front.
In order to further prevent user to obtain Contents of clipboard using plug-in unit shielding harness when using webpage, step S3 is also
Comprising steps of the content obtained in clipbook forcibly closes the webpage opened if the content in clipbook has not been obtained.
Preferably, S11 is further comprised the steps of: between step S1 and step S2, has detected whether screenshotss movement；If so, into
Enter step S2；If it is not, then return step S1.In order to preferably complete the anti-screenshotss of webpage, after detecting that webpage is opened, equally
Identical mode can be detected using with webpage, whether there are screenshotss by real-time detection or detected whether to cut at preset timed intervals
Screen movement, such as every 50ms detection are primary.Further, the method that clipbook is emptied in step S3 includes calling function that will clip and paste
The content of plate empties and calls content zero setting or any random number of the function by clipbook.In one embodiment of this invention, may be used
To use function: " window.clipboardData.clearData ()；" empty the content of clipbook.It can also be to right
Shear plate calls function " EmptyClipboard () " to empty shear plate or replace with calling function
All shear plate data are set 0 or set random number by " SetClipboardData () ".Hereafter, user uses stickup, Ctrl+V etc.
The content for the clipbook that means paste out is all empty or mistake content.
As shown in Fig. 2, Fig. 2 is a kind of block schematic illustration of one embodiment of system of the anti-screenshotss of webpage of the present invention.The present invention
Additionally provide a kind of system of anti-screenshotss of webpage, comprising:
Webpage detection module, for detecting and judging whether webpage is opened；, such as can be by detection Program Manager
Related .exe application process to determine whether having webpage and its associated process in the open state or whether there is webpage transporting
In row state.In the present invention, it can be also possible to detect at preset timed intervals by whether opening by real-time detection of webpage,
Such as every 50ms detection is once.
Matching module, for judging the content and webpage in clipbook when webpage detection module detects that webpage is opened
Whether content matches；In one embodiment of the invention, content in web page contents and clipbook fits through images match
It realizes.Wherein, images match is divided into the matching based on gray scale and the matching based on feature.
Gray-scale Matching regards image as 2D signal with the viewpoint counted, using between the method searching signal of statistical correlation
Relevant matches.Using the correlation function of two signals, their similitude is evaluated to determine same place.Gray-scale Matching passes through benefit
With certain similarity measurement, such as correlation function, covariance function, poor quadratic sum, poor absolute value and estimate extreme value, determines two width
Corresponding relationship in image.Preferably, the Gray-scale Matching method used in the present embodiment is Normalized Grey Level matching method, substantially former
Reason is the gray matrix a realtime graphic window with a certain size pixel-by-pixel, all possible window with reference picture
Mouth gray scale array, the matching process compared is scanned for by certain method for measuring similarity, is in theory exactly using image
The relevant technologies.Can certainly be sorted related algorithm using amplitude, and the sequence of FFT related algorithm and hierarchical search judges algorithm
Deng.Characteristic matching refers to the feature (features such as point, line, surface) by extracting two or more images respectively, joins to feature
Number description, then carries out a kind of matched algorithm with described parameter.Image one handled by feature-based matching
As include feature have color characteristic, textural characteristics, shape feature, spatial position feature etc..Characteristic matching first to image into
Then row pretreatment establishes the matching corresponding relationship of feature between two images to extract its high-level feature, usually used
Feature primitive have point feature, edge feature and provincial characteristics.Characteristic matching needs to use the operation of many such as matrixes, gradient
Solution, there are also the mathematical operations such as Fourier transform and Taylor expansion.The feature extracting and matching method used in the present embodiment
Have: statistical method, geometric method, modelling, signal processing method, boundary characteristic method, fourier shape description method, geometry parameter method, shape
Shape Moment invariants etc..Since the characteristic point compared pixels point of image is many less, the matching process based on characteristics of image subtracts significantly
The calculation amount of matching process is lacked；Meanwhile the variation that the matching degree magnitude contraposition of characteristic point is set is more sensitive, can greatly improve
Matched levels of precision；Moreover, the extraction process of characteristic point can reduce the influence of noise, to grey scale change, image deformation with
And it blocks etc. and to well adapt to ability.
Module is emptied, includes for emptying in clipbook when being matched for the content in clipbook with web page contents
Content.When screenshotss, screenshotss content is usually stored in clipbook with graphic form, can by emptying Contents of clipboard
To understand screenshotss content, both it can prevent the content in webpage from leaking out by screenshotss.In one embodiment of the invention, pass through
Call function: " window.clipboardData.clearData ()；" Lai Shixian empties the content for including in clipbook, prevent
Only web page contents are by screenshotss.
In one embodiment of this invention, webpage detection module further include: label is inserted into unit, in webpage network address
Front insertion describes label, the content in non-print webpage.Due to having printing function in webpage, in addition to preventing web page contents quilt
Screenshotss, while also to prevent web page contents from being printed.So by being inserted in the network address front of webpage in one embodiment of the invention
Enter to describe label and carrys out non-print web page contents.Such as by calling label: "<style>@media print * display:
None } }</style>" insertion network address front carry out non-print web page contents.
In order to further prevent user to obtain Contents of clipboard using plug-in unit shielding harness when using webpage, webpage is counter to be cut
The system of screen further include: module is obtained, for obtaining the content in clipbook；Webpage closedown module, for obtaining module not
When getting the content in clipbook, the webpage opened is forcibly closed.
Preferably, the system of the anti-screenshotss of webpage further include: screenshotss detection module, for detecting whether there is screenshotss movement.For
The better anti-screenshotss for completing webpage equally can detect identical mode using with webpage after detecting that webpage is opened,
Whether there are screenshotss by real-time detection or detected whether screenshotss movement at preset timed intervals, such as every 50ms detection is primary.Into
One step, it empties module and is also used to when emptying clipbook, function is called to empty and call function will cut the content of clipbook
The content zero setting or any random number of pasting board.In one embodiment of this invention, function can be used:
"window.clipboardData.clearData()；" empty the content of clipbook.Letter can also be called to shear plate
Number " EmptyClipboard () ", which empties shear plate or replaces with, calls function " SetClipboardData () " to cut all
Cutting plate data set 0 or set random number.Hereafter, the content for the clipbook that user pastes out using means such as stickup, Ctrl+V is all
For empty or mistake content.
A kind of method and system of the anti-screenshotss of webpage provided by the present invention can be prevented completely without installing any plug-in unit
Screenshotss only are carried out to browser.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (2)
1. a kind of method of the anti-screenshotss of webpage, which is characterized in that comprising steps of
S1, detection simultaneously judge whether webpage is opened；If so, S2 is entered step, if it is not, then repeating step S1；The step S1
It further comprises the steps of: and describes label in the insertion of the network address front of the webpage, the content in webpage described in non-print；
S11 is further comprised the steps of: between the step S1 and the step S2, has detected whether screenshotss movement；If so, entering step
Rapid S2；If it is not, then return step S1；
S2, judge whether the content in clipbook matches with the web page contents；If so, entering step S3；If it is not, then returning
Step S1；
S3, the content for including in the clipbook is emptied；The step S3 further comprises the steps of: interior in the acquisition clipbook
Hold, if the content in the clipbook has not been obtained, forcibly closes the webpage opened；Institute is emptied in the step S3
The method for stating clipbook includes the content zero setting for calling function to empty and call function for the clipbook for the content of clipbook
Or any random number.
2. a kind of system of the anti-screenshotss of webpage characterized by comprising
Webpage detection module, for detecting and judging whether webpage is opened；The webpage detection module further include: label insertion is single
Member, for being inserted into description label in the front of the webpage network address, the content in webpage described in non-print；
Matching module, for when the webpage detection module detects that the webpage is opened, judge content in clipbook with
Whether the web page contents match；
Module is emptied, for emptying described when the content in the clipbook is matched with the web page contents
The content for including in clipbook；The module that empties is also used to when emptying the clipbook, calls function will be in clipbook
Appearance empties and calls content zero setting or any random number of the function by the clipbook；
The system of the anti-screenshotss of webpage further include:
Module is obtained, for obtaining the content in the clipbook；
Webpage closedown module, for forcibly closing when the content in the clipbook has not been obtained in the acquisition module
The webpage opened；
Screenshotss detection module, for detecting whether there is screenshotss movement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610238759.2A CN105930152B (en) | 2016-04-15 | 2016-04-15 | A kind of method and system of anti-screenshotss |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610238759.2A CN105930152B (en) | 2016-04-15 | 2016-04-15 | A kind of method and system of anti-screenshotss |
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| Publication Number | Publication Date |
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| CN105930152A CN105930152A (en) | 2016-09-07 |
| CN105930152B true CN105930152B (en) | 2019-04-26 |
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| CN106936998B (en) * | 2017-03-21 | 2019-11-22 | 北京小米移动软件有限公司 | Screenshotss method and screen video recorder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1735870A (en) * | 2003-01-20 | 2006-02-15 | 富士通株式会社 | Copy preventing apparatus, duplicate the method for preventing and make computing machine carry out the program of this method |
| CN102110113A (en) * | 2009-12-28 | 2011-06-29 | 北京安码科技有限公司 | Method for preventing screen copy of webpage content and device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7836301B2 (en) * | 2004-03-10 | 2010-11-16 | Harris Steven M | Computer program for securely viewing a file |
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2016
- 2016-04-15 CN CN201610238759.2A patent/CN105930152B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1735870A (en) * | 2003-01-20 | 2006-02-15 | 富士通株式会社 | Copy preventing apparatus, duplicate the method for preventing and make computing machine carry out the program of this method |
| CN102110113A (en) * | 2009-12-28 | 2011-06-29 | 北京安码科技有限公司 | Method for preventing screen copy of webpage content and device thereof |
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| CN105930152A (en) | 2016-09-07 |
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