CN105141409A - Method, terminal and server for realizing screen digital watermarks - Google Patents
Method, terminal and server for realizing screen digital watermarks Download PDFInfo
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- CN105141409A CN105141409A CN201510491203.XA CN201510491203A CN105141409A CN 105141409 A CN105141409 A CN 105141409A CN 201510491203 A CN201510491203 A CN 201510491203A CN 105141409 A CN105141409 A CN 105141409A
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Abstract
The invention is applied to the technical field of information hiding, and provides a method, terminal and server for realizing screen digital watermarks. The method comprises the following steps: receiving a sensitive data reading request; judging whether the digital watermarks exit in sensitive data or not; and if not, generating the sensitive data having the digital watermarks aiming at the sensitive data according to user watermark information of a user, and reading the sensitive data having the digital watermarks, wherein the user watermark information comprises a vector diagram set with vector diagrams respectively corresponding to each character in a user character set; and the user character set is a character set distributed to the user by the server. According to the embodiment of the invention, the digital watermarks are generated aiming at the sensitive data according to the vector diagrams in the vector diagram set; the digital watermarks are generated by adopting the vector diagrams; furthermore, the vector diagrams can be composed of pixel points according to a pre-set rule; namely, only few pixel points can be replaced by the vector diagrams after being added onto the sensitive data; and thus, display of the sensitive data cannot be influenced by the vector diagrams.
Description
Technical field
The invention belongs to Information Hiding Techniques field, particularly relate to a kind of implementation method of screen Digital watermark, terminal and server.
Background technology
Digital watermarking (DigitalWatermarking) technology some identification informations (i.e. digital watermarking) is directly embedded (comprising multimedia, document, software etc.) or secondary indication in the middle of digital carrier (structure of amendment specific region), and do not affect the use value of original vector, be also not easy to be found out and again revise.But can by producer identification and identification.By these hiding information in the carrier, can reach and confirm creator of content, buyer, transmission secret information or judge the objects such as whether carrier is tampered.Digital watermarking be protection information safely, realize false proofly tracing to the source, the effective way of copyright protection.
Existing screen Digital watermark Anticompromise Technique aspect, usual employing user adheres to the watermark with corporate identify when checking sensitive data, this watermark is generally visible watermark, and these visible watermarks usually all can be obvious, so all can have a certain impact to data display and work.
And due to watermark too obviously time, disseminator propagates after first watermark being processed again, thus the mode do not reached by showing watermark solves the problem of divulging a secret.
Summary of the invention
The embodiment of the present invention provides a kind of implementation method of screen Digital watermark, be intended to solve not only all to have a certain impact to data display and work because visible watermark is obvious and also easily processed when propagating after again propagate, thus the mode do not reached by showing watermark solves the problem of divulging a secret.
The embodiment of the present invention is achieved in that a kind of implementation method of screen Digital watermark, and described method comprises:
Receive sensitive data read requests, sensitive data read requests instruction sensitive data;
Judge whether there is digital watermarking in sensitive data;
If not, then generate for sensitive data and according to user's watermark information and there is the sensitive data of digital watermarking, and read the sensitive data with digital watermarking, user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, and user's character set is server is the character set that user distributes.
The embodiment of the present invention also provides a kind of implementation method of screen Digital watermark, and described method comprises:
User's watermark information that receiving terminal sends obtains request;
Obtain the user's watermark information asking to determine to be stored in server according to user's watermark information, user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set;
User's watermark information is sent to terminal.
The embodiment of the present invention also provides a kind of terminal, and described terminal comprises:
First receiver module, for receiving sensitive data read requests, sensitive data read requests instruction sensitive data;
Judge module, for judging whether have digital watermarking in sensitive data;
Generation module, for when not having digital watermarking in sensitive data, the sensitive data with digital watermarking is generated for sensitive data and according to user's watermark information of user, and read the sensitive data with digital watermarking, user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, and user's character set is server is the character set that user distributes.
The embodiment of the present invention also provides a kind of server, and described server comprises:
3rd receiver module, the user's watermark information sent for receiving terminal obtains request;
Second determination module, for obtaining user's watermark information that request is determined to be stored in server according to user's watermark information, user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set;
3rd sending module, for being sent to terminal by user's watermark information.
The embodiment of the present invention is after reception sensitive data read requests, can judge whether having digital watermarking in sensitive data, when determining that not there is in sensitive data digital watermarking, the sensitive data with digital watermarking can be generated for this sensitive data and according to user's watermark information of user, this user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, when even there is no digital watermarking in sensitive data, polar plot can be concentrated to generate digital watermarking for sensitive data according to these polar plots, because these digital watermarkings adopt polar plot to generate, and this polar plot can be made up of the pixel according to preset rules, namely be attached on sensitive data and only can replace a small amount of pixel, therefore this polar plot does not only affect the display of sensitive data, and be not easily removed, and there is resistant to collapsing, there is redundancy backup, the characteristic of anti-bohr line.
Accompanying drawing explanation
Fig. 1 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention one provides;
Fig. 2 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention two provides;
Fig. 3 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention three provides;
Fig. 4 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention four provides;
Fig. 5 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention five provides;
Fig. 6 is an embodiment of polar plot in the method for the embodiment of the present invention;
Fig. 7 is the schematic diagram of the terminal structure that the embodiment of the present invention six provides;
Fig. 8 is the schematic diagram of the terminal structure that the embodiment of the present invention seven provides;
Fig. 9 is the schematic diagram of the server architecture that the embodiment of the present invention eight provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one
Refer to Fig. 1, Fig. 1 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention one provides, as follows in detail:
In a step 101, sensitive data read requests is received.
Wherein, sensitive data read requests instruction sensitive data.
In a step 102, judge whether there is digital watermarking in sensitive data.
Wherein, can't read sensitive data immediately receiving sensitive data read requests, but first judge whether having digital watermarking in sensitive data.
In step 103, generate for sensitive data and according to user's watermark information and there is the sensitive data of digital watermarking, and read the sensitive data with digital watermarking.
Wherein, when judging that not there is digital watermarking, the sensitive data with digital watermarking can be generated for sensitive data, user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, and user's character set is server is the character set that user distributes.
It should be noted that, polar plot can take various ways, as adopted the dot chart generated according to the pixel of preset rules arrangement, the arrangement of this preset rules recording pixel point and the relative position relation of pixel, as recorded the angle of line between two points adjacent with this point of each point in dot matrix, and relative position between points, as first is positioned at 37 degree, the north by east of second point, can adopt and record polar plot in this way, as shown in Figure 6, Fig. 6 is an embodiment of polar plot in the method for the embodiment of the present invention, character 0 and polar plot corresponding to character A is given in Fig. 6, all the other characters can be arranged voluntarily according to the mode of this polar plot, also can directly all preset the polar plot of all characters.
As can be seen here, the embodiment of the present invention is after reception sensitive data read requests, can judge whether having digital watermarking in sensitive data, when determining that not there is in sensitive data digital watermarking, the sensitive data with digital watermarking can be generated for this sensitive data and according to user's watermark information of user, this user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, when even there is no digital watermarking in sensitive data, polar plot can be concentrated to generate digital watermarking for sensitive data according to these polar plots, because these digital watermarkings adopt polar plot to generate, and this polar plot can be made up of the pixel according to preset rules, namely be attached on sensitive data and only can replace a small amount of pixel, therefore this polar plot does not only affect the display of sensitive data, and be not easily removed, and there is resistant to collapsing, there is redundancy backup, the characteristic of anti-bohr line.
Embodiment two
It should be noted that, the method of the embodiment of the present invention additionally provides generating the mode with the sensitive data of digital watermarking, refer to Fig. 2, Fig. 2 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention two provides, on the basis of Fig. 1, when sensitive data is sensitization picture, as shown in Figure 2, step 103 can comprise:
Step 103a, is divided into M block sensitization picture by sensitization picture.
Wherein, M be not less than 1 integer, when dividing sub-sensitization picture, can divide according to the size of sub-sensitization picture preset.
For example, the size of a sub-sensitization picture will do not had to be divided into 120px*150px, and wherein px is pixel, specifically can carry out the size division of sub-sensitization picture according to actual conditions.
Step 103b, is divided into N block subgraph block by sub-sensitization picture.
Wherein, N is the integer of the quantity being not less than character in user's character set; Be divided into the size of 120px*150px in the size of sub-sensitization picture after, can be N block subgraph block by this sub-sensitization picture Further Division, N can determine according to the quantity of character in user's character set.
For example, as in user's character set, the quantity of character is 10, then N can be defined as at least 10 when dividing, the size of sub-sensitization picture, for the ease of dividing, N is set to 12 herein, then every block subgraph block can be divided into the size of 50px*30px, specifically can carry out the size division of subgraph block according to actual conditions.
It should be noted that, also the scope of character can be divided, if the character in user's character set is all at character 0 to 9, and in the scope of character A to J, certainly also can be divided into other character range, as long as can correctly identify.
Step 103c, is filled to successively by polar plot corresponding for user's character set in the subgraph block of the quantity of character in respective user character set in the first sub-sensitization picture.
Wherein, first sub-sensitization picture is one of M block sensitization picture, and polar plot comprises the pixel according to preset rules arrangement, after having divided subgraph block, can polar plot corresponding for user's character set be filled in this subgraph block successively, the polar plot that user's character set is corresponding and vector atlas.
For example, after sub-sensitization picture is divided into 12 sub-segments, owing to there being 10 characters in user's character set, then corresponding polar plot is also 10, now these 10 polar plots can be filled into successively in 10 sub-segments in 12 sub-segments, only fill a polar plot in each subgraph block, concrete fill order can be arranged in advance, so that identify according to same order when reading digital watermarking.
As can be seen here, adopt above-mentioned digital watermarking generating mode, the digital watermarking generated can carry out all standing to sensitization picture, what make sensitization picture all has this digital watermarking everywhere, and because polar plot adopts the pixel of preset rules distribution, make polar plot not only not affect the display of sensitive data, and improve resistant to collapsing further, have the characteristic of redundancy backup and anti-bohr line.
As optionally, step 103 also can comprise:
Step 103d, is filled to successively by polar plot corresponding for user's character set in the subgraph block of the quantity of character in respective user character set in the second sub-sensitization picture.
Wherein, second sub-sensitization picture is one of M block sensitization picture, after the first sub-sensitization picture has been filled, can according to the mode of the sub-sensitization picture of filling first, the second sub-sensitization picture identical with the first sub-sensitization picture is filled, the content of filling is identical with the content of filling in the first sub-sensitization picture, by circulation step 103c or 103d step, until all sub-sensitization pictures all complete filling process, namely the sensitization picture with digital watermarking is generated, wherein digital watermarking is fill identical vector atlas in sub-sensitization picture on sensitization picture, this vector atlas is corresponding with user's character set.
As optionally, also comprise initial subgraph block in N block subgraph block, step 103 also can comprise:
Step 103e, by default start vector totem culture to initial subgraph block.
Wherein, in step 103b, sub-sensitization picture is divided into 12 sub-segments, and vector atlas only occupies 10 sub-segments, can choose a sub-segment as initial subgraph block in 12 sub-segments, then by start vector totem culture to initial subgraph block.
For example, for the ease of identifying, initial subgraph block can be chosen for first sub-segment in 12 sub-segments, like this when discriminating digit watermark, directly the vector atlas of filling is positioned by this start vector figure, facilitate the follow-up identification carrying out vector atlas.
As optionally, judge that whether having digital watermarking in sensitive data can comprise:
Step 102a, judges the digital watermarking whether in sensitization picture with start vector figure.
Wherein, after being provided with start vector figure, because start vector figure is a part for digital watermarking, by only identifying that this start vector figure just can know in sensitization picture whether have digital watermarking.
As optionally, also comprise syndrome segment in N block subgraph block, step 103 also can comprise:
Step 103f, generates check code for user's character set according to default verification rule set.
Wherein, in order to strengthen the characteristic that digital watermarking can not be tampered further, can by user's character set according to check code corresponding to default verification generate rule, the type of this verification rule can adopt multiple, as long as final check value is still character.
For example, the standard pin of the system of checking character (GB/T17710-2008) (ISO/IEC7064:2003) can be adopted user's character set, namely 10 characters generate corresponding check code, after 10 characters arrange in order, the check code generated by this system of checking character is unique, a certain character in any change 10 characters or change the position of a certain character, all can make check code change, unequal with the check code originally generated.
Step 103g, by check vector totem culture corresponding for check code in syndrome segment.
Wherein, in step 103b, sub-sensitization picture is divided into 12 sub-segments, and vector atlas only occupies 10 sub-segments, can choose a sub-segment as syndrome segment in 12 sub-segments, after generation check code, by check vector filling graph corresponding for check code in syndrome segment.
For example, verification subgraph block can be set to last block of 12 sub-segments, be arranged on last block first to concentrate owing to inserting polar plot, thus increase the identification step of vector atlas, also can playing the effect of subgraph block end location in addition as last block, namely when recognizing syndrome segment, can determine that a word sensitization picture has identified complete, coordinate initial subgraph block, can efficient identification digital watermarking.
It should be noted that, check code is also character 0 to 9, and a character in the scope of character A to J.
It should be noted that, step 103e, the order of step 103f and step 103g can be arranged on any one the step place after step 103b.
Embodiment three
Refer to Fig. 3, Fig. 3 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention three provides, and as shown in Figure 3, on the basis of Fig. 1 or Fig. 2, method also can comprise:
Step 104, determines the vector atlas of user's watermark information of corresponding digital watermarking according to digital watermarking.
Wherein, if there is digital watermarking in sensitive data, the vector atlas of user's watermark information of corresponding digital watermarking can be determined according to digital watermarking.
Step 105, sends user's watermark information inquiry request to server.
Wherein, after determining vector atlas, can send user's watermark information inquiry request to server, this user's watermark information request carries the vector atlas of user's watermark information of corresponding digital watermarking.
As can be seen here, if when there is in sensitive data digital watermarking, also can add a query script, due to user's watermark information of the storage on Servers-all can not be stored in terminal, therefore depend merely on terminal to carry out inquiring about and cannot carry out, thus after terminal determines vector atlas corresponding to digital watermarking, this vector atlas can be attached to user's watermark information inquiry request and be sent to server, so that user's watermark information of vector atlas and storage can be carried out matching inquiry by server, thus improve the realizability of embodiment of the present invention method further.
As optionally, step 104 can comprise:
Step 104a, obtains at least two start vector figure adjacent in digital watermarking.
Wherein, after determining sensitization picture, the vector atlas in the digital watermarking of sensitization picture can be inquired about, in order to inquire about this vector atlas, first can determine at least two adjacent start vector figure, generally, only determine two start vector figure, then according to the locator sensitization picture of two start vector figure.
Step 104b, determines sub-sensitization picture according to adjacent at least two start vector figure.
Wherein, because vector atlas is arranged with various arrangement mode on sensitization picture, by means of only two start vector figure, word sensitization picture is positioned, likely there is Wrong localization, therefore unnecessary two adjacent start vector figure can be determined, after determining a start vector figure, by on it, under, the adjacent start vector figure in left and right all determines, then determine respectively this start vector figure and its on, under, sub-sensitization picture between the start vector figure that left and right is adjacent, then according to the rule of vector atlas, as the quantity of polar plot concentrated by polar plot, determine correct sub-sensitization picture.
Step 104c, obtains polar plot corresponding to subgraph block in sub-sensitization picture as vector atlas.
Wherein, after determining correct word sensitization picture, can determine the vector atlas in sub-sensitization picture further, this vector atlas is the 2nd to the 11st polar plot among 12 polar plots.
As can be seen here, no matter be carried out compression to former picture, be out of shape, reduce and after the operation such as amplification, owing to being vector graphics, namely the dot chart that pixel generates according to preset rules is had, all start vector figure can be determined, specifically can determine two adjacent start vector figure, then based on one of them start vector figure, determine the start vector figure that the four direction up and down of this start vector figure is adjacent again, thus according to adjacent start vector figure determination word occurrence sensitization picture, and then the vector atlas of digital watermarking can be determined.
As optionally, after step 105, method also can comprise:
Step 106, the feedback legal information that reception server sends, and read the sensitive data with digital watermarking.
Wherein, after receiving the feedback legal information that server sends, represent that the sensitive data with digital watermarking is valid data, then can read the sensitive data with digital watermarking, the vector atlas that the request of feedback legal information indicating user watermark information is carried is legal vector atlas.
Or,
Step 107, the feedback invalid information that reception server sends.
Wherein, after receiving the feedback legal information that server sends, represent that the sensitive data with digital watermarking is invalid data, namely this sensitization picture is illegal sensitization picture, therefore need the illegal sensitization picture to having digital watermarking to report, the vector atlas that the request of feedback invalid information indicating user watermark information is carried is illegal vector atlas;
Step 108, sends the sensitization picture with illegal vector atlas to server.
It should be noted that, step 106, the order of step 107 and step 108 can be replaced, as long as all arrange after step 105.
After the sensitization picture determining to have this digital watermarking is invalid data, this sensitization picture can be reported as illegal sensitization picture, there is in this illegal picture illegal vector atlas, so that server processes this illegal picture.
It can thus be appreciated that, after have sent transmission user watermark information inquiry request to server, can receive by the feedback legal information of server feedback or feedback invalid information, and can operate accordingly according to different feedback informations, as being feedback legal information, then can directly read this sensitization picture, if and feedback invalid information, then this sensitization picture is reported, simultaneously also can read this sensitization picture, in this way, the fail safe of the method for the embodiment of the present invention can be improved further.
As optionally, before step 103, method also can comprise:
A, to send user's watermark information to server and obtain request;
User's watermark information that b, reception server send.
Wherein, before step 103, owing to needing user's watermark information in step 103, from server, this user's watermark information is obtained by step a and step b, as by step a, to send user's watermark information to server and obtain request, server upon receiving the request, can return user's watermark information to terminal, now terminal user's watermark information that can be sent by step b, reception server, thus the acquisition process of completing user watermark information.
It should be noted that, after obtaining user's watermark information, can be stored in the memory device of terminal, also discardable, when needing to generate digital watermarking next time, if be stored in the situation in the memory device of terminal, then directly from memory device, obtain user's watermark information, if previous employing abandon mode, then again obtain user watermark information to server according to step a and step b.
Embodiment four
Refer to Fig. 4, Fig. 4 is the flow chart of the screen Digital watermark that the embodiment of the present invention four provides, and as shown in Figure 4, the embodiment of the present invention provides a kind of implementation method of screen Digital watermark, can comprise:
Step 201, user's watermark information that receiving terminal sends obtains request.
Wherein, after terminal to server have sent user's watermark information acquisition request, server can receive this user's watermark information and obtain request.
Step 202, obtains the user's watermark information asking to determine to be stored in server according to user's watermark information.
Wherein, user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, and server, receiving user's watermark information acquisition request, can inquire user's watermark information that this user is corresponding.
Step 203, is sent to terminal by user's watermark information.
Wherein, and user's watermark information is sent to terminal.
As can be seen here, terminal is when needs user watermark information generates digital watermarking, user's watermark information can be sent to server and obtain request, then server can determine according to user user's watermark information of being stored in server, then this user's watermark information can be sent to terminal, terminal then can receive this user's watermark information, thus generates corresponding digital watermarking according to this user's watermark information, strengthens the realizability of embodiment of the present invention method further.
Embodiment five
Refer to Fig. 5, Fig. 5 is the flow chart of the implementation method of the screen Digital watermark that the embodiment of the present invention five provides, and as shown in Figure 5, the embodiment of the present invention provides a kind of implementation method of screen Digital watermark, and the method also can comprise:
Step 204, user's watermark information inquiry request that receiving terminal sends.
Wherein, the request of user's watermark information carries the vector atlas of user's watermark information of corresponding digital watermarking, and server also can receive the user's watermark information inquiry request sent by terminal, is accompanied with vector atlas in this user's watermark information inquiry request.
Step 205, server is according to user's watermark information whether in vector atlas querying server with vector atlas;
Wherein, in order to whether have user's watermark information of vector atlas in querying server, server can obtain subsidiary vector atlas in request according to user's watermark information and mate with the user's watermark information be stored in server.
For example, the vector atlas of reception is carried out preset rules with the vector atlas in user's watermark information mate, as can be fuzzy matching, namely without the need to the equal corresponding situation of all polar plots, as preset rules is identical for matching the polar plot had more than more than 2/3rds, then represent that the match is successful, or preset matching identical to the polar plot exceeding continuous more than 2/3rds time, represent that the match is successful, specific rules can set according to actual conditions, if high sensitive information identification system, what then matching degree can be arranged is higher, if low sensitivity information identification system, what then can arrange is lower.
As optionally, method also comprises:
Step 206, sends feedback legal information to terminal.
Wherein, if having user's watermark information of vector atlas in server, then send feedback legal information to terminal, the vector atlas that the request of feedback legal information indicating user watermark information is carried is legal vector atlas.
Step 207, sends feedback invalid information to terminal.
Wherein, if when not matching, can send feedback invalid information to terminal, the vector atlas that the request of feedback invalid information indicating user watermark information is carried is illegal vector atlas.
As optionally, after step 206, method also comprises:
Step 208, the sensitization picture of what receiving terminal sent have illegal vector atlas;
Wherein, after sending feedback invalid information to terminal, terminal can send the sensitization picture with illegal vector atlas to server, and server can receive the sensitization picture that this has illegal vector atlas.
Step 209, marks rear storage to the sensitization picture with illegal vector atlas.
Wherein, server can mark rear storage to the sensitization picture with illegal vector atlas, is namely labeled as illegal picture, when making subscriber equipment again read this illegal picture, can not reads this illegal picture.
As can be seen here, step 206 matches to step 209 and step 106 to step 108.
As can be seen here, by the mode of this query feedback, whether can be that legal sensitization picture identifies to sensitization picture, be specially and first receive user's watermark information inquiry request, this user's watermark information request carries the vector atlas of user's watermark information of corresponding digital watermarking, then vector atlas can be mated with the user's watermark information be stored in server, actual match or the mode of fuzzy matching can be taked to inquire about according to actual conditions, when fitting through, feedback legal information can be sent to terminal, terminal is made directly to read this sensitization picture, and when coupling is obstructed out-of-date, feedback invalid information can be sent to terminal, now this illegal picture can be sent to server by terminal, by server, it is marked, make SS later can not open this picture again, specifically can be integrated by the information list of server by illegal picture, be sent to terminal, terminal is when reading sensitization picture, if the sensitization picture in information list, then do not load.
Embodiment six
Above the implementation method of the screen Digital watermark in the embodiment of the present invention is introduced, below the terminal in the embodiment of the present invention is introduced.
Refer to Fig. 7, Fig. 7 is the schematic diagram of the terminal structure that the embodiment of the present invention six provides, and as shown in Figure 7, the embodiment of the present invention provides a kind of terminal, can comprise:
First receiver module 301, for receiving sensitive data read requests, described sensitive data read requests instruction sensitive data;
Judge module 302, for judging whether have digital watermarking in described sensitive data;
Generation module 303, for when not having digital watermarking in described sensitive data, the sensitive data with described digital watermarking is generated for described sensitive data and according to user's watermark information of user, and read the sensitive data with described digital watermarking, described user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, and described user's character set is server is the character set that user distributes.
As can be seen here, the embodiment of the present invention first receiver module 301 is after reception sensitive data read requests, by whether there is digital watermarking in judge module 302 pairs of sensitive datas can judge, when determining that not there is in sensitive data digital watermarking, generation module 303 can generate the sensitive data with digital watermarking for this sensitive data and according to user's watermark information of user, this user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, when even there is no digital watermarking in sensitive data, polar plot can be concentrated to generate digital watermarking for sensitive data according to these polar plots, because these digital watermarkings adopt polar plot to generate, and this polar plot can be made up of the pixel according to preset rules, namely be attached on sensitive data and only can replace a small amount of pixel, therefore this polar plot does not only affect the display of sensitive data, and be not easily removed, and there is resistant to collapsing, there is redundancy backup, the characteristic of anti-bohr line.
As optionally, take sensitive data as sensitization picture be example, described generation module 303 comprises:
First division unit 3031, for described sensitization picture is divided into M block sensitization picture, wherein M be not less than 1 integer;
Second division unit 3032, for sub-sensitization picture being divided into N block subgraph block, wherein N is the integer of the quantity being not less than character in described user's character set;
First filler cells 3033, for polar plot corresponding for described user's character set being filled to successively in the described subgraph block of the quantity of character in corresponding described user's character set in the first sub-sensitization picture, described first sub-sensitization picture is one of M block sensitization picture, wherein, described polar plot comprises the pixel according to preset rules arrangement.
Second filler cells 3034, for being filled to successively by polar plot corresponding for described user's character set in the described subgraph block of the quantity of character in corresponding described user's character set in the second sub-sensitization picture, described second sub-sensitization picture is one of M block sensitization picture.
As can be seen here, adopt above-mentioned digital watermarking generating mode, by the first division unit 3031, described sensitization picture is divided into M block sensitization picture, by the second division unit 3032, sub-sensitization picture is divided into N block subgraph block again, then by the first filler cells 3033, polar plot corresponding for described user's character set is filled to successively in the described subgraph block of quantity of character in corresponding described user's character set in the first sub-sensitization picture, also by the second filler cells 3034, polar plot corresponding for described user's character set can be filled to successively in the described subgraph block of the quantity of character in corresponding described user's character set in the second sub-sensitization picture, the digital watermarking generated can carry out all standing to sensitization picture, what make sensitization picture all has this digital watermarking everywhere, and because polar plot adopts the pixel of preset rules distribution, polar plot is made not only not affect the display of sensitive data, and improve resistant to collapsing further, there is the characteristic of redundancy backup and anti-bohr line.
As optionally, judge module 302 is specifically for judging the digital watermarking whether in sensitization picture with start vector figure.In order to strengthen the characteristic that digital watermarking can not be tampered further, can by user's character set according to check code corresponding to default verification generate rule, the type of this verification rule can adopt multiple, as long as final check value is still character.
As optionally, also comprise initial subgraph block and/or syndrome segment in described N block subgraph block, generation module 303 also can comprise:
Initial filler cells 3035, for the start vector totem culture that will preset in described initial subgraph block.
First generation unit 3036, for generating check code for described user's character set according to default verification rule set;
3rd filler cells 3037, for by check vector totem culture corresponding for described check code in described syndrome segment.
For example, verification subgraph block can be set to last block of 12 sub-segments, be arranged on last block first to concentrate owing to inserting polar plot, thus increase the identification step of vector atlas, also can playing the effect of subgraph block end location in addition as last block, namely when recognizing syndrome segment, can determine that a word sensitization picture has identified complete, coordinate initial subgraph block, can efficient identification digital watermarking.
Embodiment seven
Refer to Fig. 8, Fig. 8 is the schematic diagram of the terminal structure that the embodiment of the present invention seven provides, and wherein, terminal is on basis shown in Fig. 7, and terminal also comprises:
First determination module 304, for when having digital watermarking in sensitive data, determines the vector atlas of user's watermark information of corresponding digital watermarking according to digital watermarking;
First sending module 305, for sending user's watermark information inquiry request to server, the request of user's watermark information carries the vector atlas of user's watermark information of corresponding digital watermarking.
As can be seen here, if when there is in sensitive data digital watermarking, also can add a query script, due to user's watermark information of the storage on Servers-all can not be stored in terminal, therefore depend merely on terminal to carry out inquiring about and cannot carry out, thus after the first determination module 304 determines vector atlas corresponding to digital watermarking, by the first sending module 305, this vector atlas can be attached to user's watermark information inquiry request and be sent to server, so that user's watermark information of vector atlas and storage can be carried out matching inquiry by server, thus improve the realizability of embodiment of the present invention method further.
As optionally, the first determination module 304 can comprise:
First acquiring unit 3041, for obtaining at least two start vector figure adjacent in digital watermarking;
First determining unit 3042, determines sub-sensitization picture according to adjacent at least two start vector figure;
Second acquisition unit 3043, for obtaining polar plot corresponding to subgraph block in sub-sensitization picture as vector atlas.
As can be seen here, no matter be carried out compression to former picture, be out of shape, reduce and after the operation such as amplification, owing to being vector graphics, namely the dot chart that pixel generates according to preset rules is had, all start vector figure can be determined, specifically can determine two adjacent start vector figure, then based on one of them start vector figure, determine the start vector figure that the four direction up and down of this start vector figure is adjacent again, thus sub-sensitization picture can be determined according to adjacent start vector figure, and then determine the vector atlas of digital watermarking.
As optionally, terminal also comprises:
Second receiver module 306, for the feedback legal information that reception server sends, and reads the sensitive data with digital watermarking, and the vector atlas that the request of feedback legal information indicating user watermark information is carried is legal vector atlas;
Or,
For the feedback invalid information that reception server sends, the vector atlas that the request of feedback invalid information indicating user watermark information is carried is illegal vector atlas;
Second sending module 307, sends the sensitization picture with illegal vector atlas to server.
It can thus be appreciated that, after have sent transmission user watermark information inquiry request to server, second receiver module 306 can receive by the feedback legal information of server feedback or feedback invalid information, and can operate accordingly according to different feedback informations, as being feedback legal information, then can directly read this sensitization picture, if and feedback invalid information, then by the second sending module 307, this sensitization picture is reported, also can read this sensitization picture simultaneously, in this way, the fail safe of the method for the embodiment of the present invention can be improved further.
As optionally, the second sending module 306 also obtains request for sending user's watermark information to server;
Second receiver module 307 is also for user's watermark information that reception server sends.
It should be noted that, after obtaining user's watermark information, can be stored in the memory device of terminal, also discardable, when needing to generate digital watermarking next time, if be stored in the situation in the memory device of terminal, then directly from memory device, obtain user's watermark information, if previous employing abandon mode, then again obtain user's watermark information to server according to the second sending module 306 and the second receiver module 307.
Embodiment eight
Above the terminal in the embodiment of the present invention is introduced, below the server in the embodiment of the present invention is introduced.
Refer to Fig. 9, Fig. 9 is the schematic diagram of the server architecture that the embodiment of the present invention eight provides, and as shown in Figure 9, embodiments provides a kind of server, can comprise:
3rd receiver module 401, the user's watermark information sent for receiving terminal obtains request;
Second determination module 402, for obtaining user's watermark information that request is determined to be stored in server according to user's watermark information, user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set;
3rd sending module 403, for being sent to terminal by user's watermark information.
As can be seen here, terminal is when needs user watermark information generates digital watermarking, user's watermark information can be sent to server and obtain request, 3rd receiver module 401 receives this user's watermark information and obtains request, the user's watermark information be stored in server is determined in then the second determination module 402 meeting according to user, then by the 3rd sending module 403, this user's watermark information can be sent to terminal, terminal then can receive this user's watermark information, thus generate corresponding digital watermarking according to this user's watermark information, the realizability of further enhancing embodiment of the present invention method.
As optionally, the 3rd receiver module 401 is also for user's watermark information inquiry request that receiving terminal sends, and the request of user's watermark information carries the vector atlas of user's watermark information of corresponding digital watermarking;
Server also comprises:
Enquiry module 404, for server according to user's watermark information whether in vector atlas querying server with vector atlas;
3rd sending module 403, also for when not having user's watermark information of vector atlas in server, sends feedback invalid information to terminal, and the vector atlas that the request of feedback invalid information indicating user watermark information is carried is illegal vector atlas.
For example, the vector atlas of reception is carried out preset rules with the vector atlas in user's watermark information mate, as can be fuzzy matching, namely without the need to the equal corresponding situation of all polar plots, as preset rules is identical for matching the polar plot had more than more than 2/3rds, then represent that the match is successful, or preset matching identical to the polar plot exceeding continuous more than 2/3rds time, represent that the match is successful, specific rules can set according to actual conditions, if high sensitive information identification system, what then matching degree can be arranged is higher, if low sensitivity information identification system, what then can arrange is lower.
As optionally, the 3rd receiver module 401 is also for the sensitization picture with illegal vector atlas that receiving terminal sends;
Server also comprises:
Mark module 405, for marking rear storage to the sensitization picture with illegal vector atlas.
As optionally, the 3rd sending module, specifically for when having user's watermark information of vector atlas in server, sends feedback legal information to terminal, and the vector atlas that the request of feedback legal information indicating user watermark information is carried is legal vector atlas.
As optionally, the 3rd sending module 403, specifically for when having user's watermark information of vector atlas in server, sends feedback legal information to terminal, and the vector atlas that the request of feedback legal information indicating user watermark information is carried is legal vector atlas.
As can be seen here, by the mode of this query feedback, whether can be that legal sensitization picture identifies to sensitization picture, be specially and first receive user's watermark information inquiry request, this user's watermark information request carries the vector atlas of user's watermark information of corresponding digital watermarking, then vector atlas can be mated with the user's watermark information be stored in server, actual match or the mode of fuzzy matching can be taked to inquire about according to actual conditions, when fitting through, feedback legal information can be sent to terminal, terminal is made directly to read this sensitization picture, and when coupling is obstructed out-of-date, feedback invalid information can be sent to terminal, now this illegal picture can be sent to server by terminal, by server, it is marked, make SS later can not open this picture again, specifically can be integrated by the information list of server by illegal picture, be sent to terminal, terminal is when reading sensitization picture, if the sensitization picture in information list, then do not load.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (28)
1. an implementation method for screen Digital watermark, is characterized in that, comprising:
Receive sensitive data read requests, described sensitive data read requests instruction sensitive data;
Judge whether there is digital watermarking in described sensitive data;
If not, then generate the sensitive data with described digital watermarking for described sensitive data and according to user's watermark information of user, and read the sensitive data with described digital watermarking, described user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, and described user's character set is server is the character set that user distributes.
2. the implementation method of screen Digital watermark according to claim 1, is characterized in that, described sensitive data is sensitization picture, and the described sensitive data for described sensitive data and according to user's watermark information generation of user with described digital watermarking comprises:
Described sensitization picture is divided into M block sensitization picture, wherein M be not less than 1 integer;
Sub-sensitization picture is divided into N block subgraph block, wherein N is the integer of the quantity being not less than character in described user's character set;
Polar plot corresponding for described user's character set is filled to successively in the described subgraph block of the quantity of character in corresponding described user's character set in the first sub-sensitization picture, described first sub-sensitization picture is one of M block sensitization picture, wherein, described polar plot comprises the pixel according to preset rules arrangement.
3. the implementation method of screen Digital watermark according to claim 2, is characterized in that, the described sensitive data for described sensitive data and according to user's watermark information generation of user with described digital watermarking also comprises:
Be filled to successively by polar plot corresponding for described user's character set in the described subgraph block of the quantity of character in corresponding described user's character set in the second sub-sensitization picture, described second sub-sensitization picture is one of M block sensitization picture.
4. the implementation method of screen Digital watermark according to claim 3, it is characterized in that, also comprise initial subgraph block in described N block subgraph block, the described sensitive data for described sensitive data and according to user's watermark information generation of user with described digital watermarking also comprises:
By in default start vector totem culture to described initial subgraph block.
5. the implementation method of screen Digital watermark according to claim 4, is characterized in that, describedly judges that whether having digital watermarking in described sensitive data comprises:
Judge the digital watermarking whether in described sensitization picture with described start vector figure.
6. the implementation method of screen Digital watermark according to claim 5, is characterized in that, described method also comprises:
If there is described digital watermarking in described sensitive data, then determine the vector atlas of user's watermark information of corresponding described digital watermarking according to described digital watermarking;
Send user's watermark information inquiry request to described server, the request of described user's watermark information carries the vector atlas of user's watermark information of corresponding described digital watermarking.
7. the implementation method of screen Digital watermark according to claim 6, is characterized in that, after sending user's watermark information inquiry request to described server, described method also comprises:
Receive the feedback legal information that described server sends, and read the sensitive data with described digital watermarking, the vector atlas that described feedback legal information indicates the request of described user's watermark information to carry is legal vector atlas;
Or,
Receive the feedback invalid information that described server sends, the vector atlas that described feedback invalid information indicates the request of described user's watermark information to carry is illegal vector atlas;
The sensitization picture with described illegal vector atlas is sent to described server.
8. the implementation method of screen Digital watermark according to claim 6, is characterized in that, describedly determines that according to described digital watermarking the vector atlas of user's watermark information of corresponding described digital watermarking comprises:
Obtain at least two start vector figure adjacent in described digital watermarking;
Sub-sensitization picture is determined according to described at least two adjacent start vector figure;
Obtain polar plot corresponding to subgraph block in described sub-sensitization picture as vector atlas.
9. the implementation method of the screen Digital watermark according to any one of claim 2 to 8, it is characterized in that, also comprise syndrome segment in described N block subgraph block, the described sensitive data for described sensitive data and according to user's watermark information generation of user with described digital watermarking also comprises:
Check code is generated according to default verification rule set for described user's character set;
By in check vector totem culture corresponding for described check code to described syndrome segment.
10. the implementation method of the screen Digital watermark according to any one of claim 2 to 8, it is characterized in that, described generate for described sensitive data and according to user's watermark information of user there is the sensitive data of described digital watermarking before, described method also comprises:
Send user's watermark information to server and obtain request;
Receive user's watermark information that described server sends.
The implementation method of 11. 1 kinds of screen Digital watermarks, is characterized in that, comprising:
User's watermark information that receiving terminal sends obtains request;
Obtain the user's watermark information asking to determine to be stored in server according to user's watermark information, described user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set;
Described user's watermark information is sent to described terminal.
The implementation method of 12. screen Digital watermarks according to claim 11, it is characterized in that, described method also comprises:
Receive user's watermark information inquiry request that described terminal sends, the request of described user's watermark information carries the vector atlas of user's watermark information of corresponding described digital watermarking;
Described server inquires about in described server user's watermark information whether with described vector atlas according to described vector atlas;
If not, then send feedback invalid information to described terminal, the vector atlas that described feedback invalid information indicates the request of described user's watermark information to carry is illegal vector atlas.
The implementation method of 13. screen Digital watermarks according to claim 12, it is characterized in that, described method also comprises:
Receive the sensitization picture with illegal vector atlas that described terminal sends;
Rear storage is marked to the described sensitization picture with illegal vector atlas.
The implementation method of 14. screen Digital watermarks according to claim 12, it is characterized in that, described method also comprises:
If have user's watermark information of described vector atlas in described server, then send feedback legal information to described terminal, the vector atlas that described feedback legal information indicates the request of described user's watermark information to carry is legal vector atlas.
15. 1 kinds of terminals, is characterized in that, comprising:
First receiver module, for receiving sensitive data read requests, described sensitive data read requests instruction sensitive data;
Judge module, for judging whether have digital watermarking in described sensitive data;
Generation module, for when not having digital watermarking in described sensitive data, the sensitive data with described digital watermarking is generated for described sensitive data and according to user's watermark information of user, and read the sensitive data with described digital watermarking, described user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set, and described user's character set is server is the character set that user distributes.
16. terminals according to claim 15, is characterized in that, described sensitive data is sensitization picture, and described generation module comprises:
First division unit, for described sensitization picture is divided into M block sensitization picture, wherein M be not less than 1 integer;
Second division unit, for sub-sensitization picture being divided into N block subgraph block, wherein N is the integer of the quantity being not less than character in described user's character set;
First filler cells, for polar plot corresponding for described user's character set being filled to successively in the described subgraph block of the quantity of character in corresponding described user's character set in the first sub-sensitization picture, described first sub-sensitization picture is one of M block sensitization picture, wherein, described polar plot comprises the pixel according to preset rules arrangement.
17. terminals according to claim 16, is characterized in that, described generation module also comprises:
Second filler cells, for being filled to successively by polar plot corresponding for described user's character set in the described subgraph block of the quantity of character in corresponding described user's character set in the second sub-sensitization picture, described second sub-sensitization picture is one of M block sensitization picture.
18. terminals according to claim 17, is characterized in that, also comprise initial subgraph block in described N block subgraph block, described generation module also comprises:
Initial filler cells, for the start vector totem culture that will preset in described initial subgraph block.
19. terminals according to claim 18, is characterized in that, described judge module specifically for:
Judge the digital watermarking whether in described sensitization picture with described start vector figure.
20. terminals according to claim 19, is characterized in that, described terminal also comprises:
First determination module, for when having described digital watermarking in described sensitive data, determines the vector atlas of user's watermark information of corresponding described digital watermarking according to described digital watermarking;
First sending module, for sending user's watermark information inquiry request to described server, the request of described user's watermark information carries the vector atlas of user's watermark information of corresponding described digital watermarking.
21. terminals according to claim 20, is characterized in that, described terminal also comprises:
Second receiver module, for receiving the feedback legal information that described server sends, and read the sensitive data with described digital watermarking, the vector atlas that described feedback legal information indicates the request of described user's watermark information to carry is legal vector atlas;
Or,
For receiving the feedback invalid information that described server sends, the vector atlas that described feedback invalid information indicates the request of described user's watermark information to carry is illegal vector atlas;
Second sending module, sends the sensitization picture with described illegal vector atlas to described server.
22. terminals according to claim 20, is characterized in that, described first determination module comprises:
First acquiring unit, for obtaining at least two start vector figure adjacent in described digital watermarking;
First determining unit, determines sub-sensitization picture according to described at least two adjacent start vector figure;
Second acquisition unit, for obtaining polar plot corresponding to subgraph block in described sub-sensitization picture as vector atlas.
23., according to claim 16 to the terminal according to any one of 22, is characterized in that, also comprise syndrome segment in described N block subgraph block, described generation module also comprises:
First generation unit, for generating check code for described user's character set according to default verification rule set;
3rd filler cells, for by check vector totem culture corresponding for described check code in described syndrome segment.
24., according to claim 16 to the terminal according to any one of 22, is characterized in that, described second sending module also obtains request for sending user's watermark information to server;
Described second receiver module is also for receiving user's watermark information that described server sends.
25. 1 kinds of servers, is characterized in that, comprising:
3rd receiver module, the user's watermark information sent for receiving terminal obtains request;
Second determination module, for obtaining user's watermark information that request is determined to be stored in server according to user's watermark information, described user's watermark information comprises the vector atlas with the polar plot corresponding respectively with each character in user's character set;
3rd sending module, for being sent to described terminal by described user's watermark information.
26. servers according to claim 24, it is characterized in that, 3rd receiver module is also for receiving user's watermark information inquiry request that described terminal sends, and the request of described user's watermark information carries the vector atlas of user's watermark information of corresponding described digital watermarking;
Described server also comprises:
Enquiry module, inquires about in described server user's watermark information whether with described vector atlas according to described vector atlas for described server;
Described 3rd sending module is not also for when having user's watermark information of described vector atlas in described server, send feedback invalid information to described terminal, the vector atlas that described feedback invalid information indicates the request of described user's watermark information to carry is illegal vector atlas.
27. servers according to claim 25, is characterized in that, described 3rd receiver module is also for receiving the sensitization picture with illegal vector atlas that described terminal sends;
Described server also comprises:
Mark module, for marking rear storage to the described sensitization picture with illegal vector atlas.
28. servers according to claim 25, it is characterized in that, described 3rd sending module is specifically for when having user's watermark information of described vector atlas in described server, send feedback legal information to described terminal, the vector atlas that described feedback legal information indicates the request of described user's watermark information to carry is legal vector atlas.
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