CN101436296A - Watermark authentication system - Google Patents
Watermark authentication system Download PDFInfo
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- CN101436296A CN101436296A CNA2008102361263A CN200810236126A CN101436296A CN 101436296 A CN101436296 A CN 101436296A CN A2008102361263 A CNA2008102361263 A CN A2008102361263A CN 200810236126 A CN200810236126 A CN 200810236126A CN 101436296 A CN101436296 A CN 101436296A
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Abstract
The invention provides a watermark authentication system, which comprises watermark embedding, recognizable watermark extraction, recognizable watermark judgment, and watermark authentication. The watermark embedding comprises a step that a specified authentication watermark and a specified recognizable watermark are embedded into a self initial carrier; the watermark extraction comprises the following steps: under the condition of information mixing of the self initial carrier and a dissident carrier, the extraction of the specified recognizable watermark is performed to all carriers, and is taken as input information of the recognizable watermark judgment to judge; the recognizable watermark judgment comprises the following steps: the initial carrier which passes the authentication of the specified recognizable watermark is taken as input information of watermark authentication; the carrier which fail to pass through the authentication of the specified recognizable watermark is removed; and the watermark authentication comprises the following steps: the specified authentication watermark in the initial carrier which is input in the previous step is extracted for authentication, and an authentication result is output. The watermark authentication system can greatly improve the correction rate and the identification rate of the prior watermark authentication system.
Description
Technical field
The present invention relates to the watermark authentication system of a kind of safety technique of computerized information transmission field, particularly a kind of information security field.
Background technology
The proposition of watermark authentication method is in order to solve under the situation that bulk information exists, identifying which information is one's own side's information that one's own side had added watermark, which information is dissident's information of other party, further identifies simultaneously, and which one's own side's information is distorted or destroyed.The mode of watermark authentication and feature are all maintained secrecy by each authentication main body and are carried out, thereby in fact each authentication main body all can only be discerned the watermark that oneself embeds, and can't the recognition of nonself watermark.At present, though a large amount of certificate schemes based on digital watermarking is suggested, these conventional digital watermark authentication schemes have all existed for the acquiescence prerequisite with the digital authenticating watermark usually when carrying out watermark authentication.Traditional digital watermarking Verification System is made up of three parts such as authenticating water-mark embedding 1, authenticating water-mark extraction 2 and watermark authentications 3 usually, as shown in Figure 1.Embed 1 by authenticating water-mark authenticating water-mark is embedded in the initial carrier, output contains the carrier of watermark.The carrier that receives, the watermark carrier that contains promptly under attack extracts 2 by authenticating water-mark authenticating water-mark is therefrom extracted.At last, authenticate the authentication output result by 3 pairs of carriers that receive of watermark authentication.Can find that by above narration traditional digital watermarking authentication method has following defective: the carrier that (1) acquiescence receives is and contains carrier watermark, may be under attack; (2) which can't identify to the carrier that receives is the carrier that needs authentication; (3) owing to discerning the high wrong authentication rate of bringing.Briefly, in the face of one group of information, because traditional watermark authentication method is given tacit consent to authentication to each information, for one's own side's information, can think one's own side's information that is not tampered through not ruined information behind the watermark authentication, and for can think one's own side's information that is tampered through the ruined information of watermark authentication; And for dissident's information, the process of one's own side's watermark authentication certainly leads to destruction, thereby finally all can be identified as the information that one's own side is distorted.And, also exist one's own side that the situation of the appointment authenticating water-mark of multiple different systems is arranged, simultaneously,, will spend the long time if each carrier is all adopted the authentication of high complexity.At this moment, one's own side's appointment authenticating water-mark and non-appointment authentication also confuses easily.Therefore, on the whole, the discrimination of traditional watermark authentication method and accuracy under the situation in the face of a large amount of not clear information, are actually very low.
Summary of the invention
Goal of the invention: the present invention is directed to the deficiency of watermark recognition methods in the prior art, a kind of watermark authentication system with high discrimination and accuracy is provided.
Technical scheme: the invention provides a kind of watermark authentication system, this system comprises: watermark embeds, can discern watermark extracting, can discern watermark judgement and watermark authentication;
Described watermark embeds and comprises: embed the authenticating water-mark of appointment and the watermark discerned of appointment in one's own side's initial carrier;
Described watermark extracting is: under one's own side's initial carrier and situation that dissident's carrier information mixes, and the watermark extracting discerned that all carriers are carried out appointment, and judge as discerning the input information that watermark judges;
Describedly discern watermark and judge and to comprise: the initial carrier of the watermark authentication discerned that will be by appointment is as the input information of watermark authentication; Will be not the carrier of the watermark authentication discerned by appointment, then will reject by the watermark the discerned corresponding vectors of authentication;
Described watermark authentication is: the authenticating water-mark of appointment authenticates in the initial carrier that the step is imported in the extraction, and the authentication output result.
The purpose of authenticating water-mark is the achieve a butt joint integrality of the carrier received and the authentication of authenticity.The purpose that can discern watermark is whether the achieve a butt joint carrier received needs the identification that authenticates, soon do not belong to the carrier of specifying in the authenticating water-mark authentication area and from the carrier that receives, weed out (do not need authenticate carrier), only keep the carrier that receives (carrier that needs authentication) of specifying in the authenticating water-mark authentication area.
Beneficial effect: through experimental results show that watermark authentication system of the present invention has the following advantages: (1) but the present invention's discriminating digit watermaking system need not to illustrate the carrier that receives whether contains watermark, can be provided with respectively as required thus and can discern watermark authentication and the watermark authentication degree of correlation and complexity, regulate watermark authentication efficient; (2) but the present invention's discriminating digit watermaking system can identify the carrier that those receive and need authentication effectively; (3) but the present invention's discriminating digit watermaking system has reduced the authentication error probability to the carrier that receives effectively; (4) but the present invention's discriminating digit watermaking system can improve authentication efficient to the authentication that mixes carrier in a large number.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is done further and to specify.
Fig. 1 is the system flowchart of traditional watermark authentication.
Fig. 2 is a watermark authentication system process flow diagram of the present invention.
Fig. 3 is the system and the watermark authentication system authentication result comparison diagram of the present invention of traditional watermark authentication.
Embodiment
The invention provides a kind of watermark authentication system, this system comprises: watermark embeds, can discern watermark extracting, can discern watermark judgement and watermark authentication; Described watermark embeds and comprises: embed the authenticating water-mark of appointment and the watermark discerned of appointment in one's own side's initial carrier; Described watermark extracting is: under one's own side's initial carrier and situation that dissident's carrier information mixes, and the watermark extracting discerned that all carriers are carried out appointment, and judge as discerning the input information that watermark judges; Describedly discern watermark and judge and to comprise: the initial carrier of the watermark authentication discerned that will be by appointment is as the input information of watermark authentication; Will be not the carrier of the watermark authentication discerned by appointment, then will reject by the watermark the discerned corresponding vectors of authentication; Described watermark authentication is: the authenticating water-mark of appointment authenticates in the initial carrier that the step is imported in the extraction, and the authentication output result.
More particularly, the discernible digital watermarking Verification System of the present invention comprises watermark embedding 1, watermark extracting 2, can discern four parts such as watermark judgement 4 and watermark authentication 3.Described watermark embeds 1 part the digital watermarking of appointment is embedded in the initial carrier of input, thus obtain exporting contain the watermark carrier.Digital watermarking is by discerning watermark and authenticating water-mark two parts are formed.The purpose of authenticating water-mark is the achieve a butt joint integrality of the carrier received and the authentication of authenticity.The purpose that can discern watermark is whether the achieve a butt joint carrier received needs the identification that authenticates, soon do not belong to the carrier of specifying in the authenticating water-mark authentication area and from the carrier that receives, weed out (do not need authenticate carrier), only keep the carrier that receives (carrier that needs authentication) of specifying in the authenticating water-mark authentication area.Described watermark extracting 2 parts extract digital watermarking from the carrier that receives, thus with the digital watermarking that extracts as discerning the input of judging 4 parts.Described judgement 4 parts of discerning are judged the watermark discerned that extracts, and identify the carrier that need carry out watermark authentication from the carrier that receives, as the input of watermark authentication 3 parts.The authenticating water-mark that described watermark authentication 3 part utilizations extract is to judging that from discerning identifying the carrier that needs to authenticate 4 parts authenticates the authentication output result.
But traditional digital watermarking Verification System and the present invention's discriminating digit watermark authentication system are carried out four kinds of experiments under the situation relatively: the one, carry out watermark authentication with the initial carrier that does not contain watermark as the carrier that receives; The 2nd, with contain other, non-appointment authenticating water-mark, do not need the carrier that authenticates to carry out watermark authentication as the carrier that receives; The 3rd, real to contain, specify authenticating water-mark, need not distorted carrier and carrying out watermark authentication of authentication as the carrier that receives; The 4th,, appointment authenticating water-mark real to contain, the quilt that need authenticate are distorted carrier and are carried out watermark authentication as the carrier that receives.
As shown in Figure 3, four kinds of carriers that first behavior utilizes traditional digital watermarking Verification System to experimentize, first row to the 4th row are respectively from left to right: initial carrier, contain non-appointment authenticating water-mark carrier, contain and specify not distorted carrier and contain and specifying the quilt of authenticating water-mark to distort carrier of authenticating water-mark; Second behavior utilizes traditional digital watermarking Verification System that four kinds of carriers are carried out authentication result; But the third line is four kinds of carriers that utilize discriminating digit watermark authentication system of the present invention to experimentize, and first row to the 4th row are respectively from left to right: initial carrier, contain non-appointment authenticating water-mark carrier, contain and specify authenticating water-mark and can discern not distorted carrier and contain the quilt of specifying authenticating water-mark and can discern watermark and distorting carrier of watermark; But fourth line is carried out authentication result for utilizing the present invention's discriminating digit watermark authentication system to four kinds of carriers.
Clear and easy for what describe, now non-appointment watermark is represented with w ', and will specify watermark to represent with w, can discern watermark represents with r, the conversion coefficient of initial carrier is represented with x the conversion coefficient that will contain watermark carrier is represented with y, represents the quantization step of embed watermark with Δ, the integer function that round () expression rounds up is represented to discern the embedment strength of watermark with α.At four kinds of above-mentioned experiment situations, specifically experiment situation is described below:
1) under traditional digital watermarking Verification System, carries out digital watermarking authentication experiment
First kind of situation selected 25 different initial carrier pictures for use; Second kind of situation utilizes embedding formula (1) to be embedded in 25 different initial carrier pictures non-appointment authenticating water-mark w ';
The third situation will specify authenticating water-mark w to utilize formula (2) to be embedded in 25 different initial carrier pictures;
The 4th kind of situation contains 25 specifies the carrier of authenticating water-mark w to distort.At last with totally 100 mixed in together authentications of carrier picture of four kinds of situations.Wherein, will four kinds of situations in experiment respectively select in first row that a carrier picture is listed in accompanying drawing 3, the authentication result of these four carrier pictures under traditional digital watermarking Verification System is listed in second row of accompanying drawing 3.
2) but under discriminating digit watermark authentication system of the present invention, carry out digital watermarking authentication experiment
First kind of situation selected 25 different initial carrier pictures for use; Second kind of situation utilizes embedding formula (1) to be embedded in 25 different initial carrier pictures non-appointment authenticating water-mark w '; The third situation will be specified authenticating water-mark w to utilize formula (2) and can be discerned watermark r and utilize formula (3) to be embedded in 25 different initial carrier pictures;
Y=x+ α r formula (3)
The 4th kind of situation contains the carrier of specifying authenticating water-mark w and can discern watermark r to 25 distorts.At last with totally 100 mixed in together authentications of carrier picture of four kinds of situations.Wherein, will four kinds of situations in experiment respectively select a carrier picture and be listed in the third line of accompanying drawing 3, but the authentication result of these four carrier pictures under discriminating digit watermark authentication system of the present invention is listed in the fourth line of accompanying drawing 3.
Can judge by 100 carrier picture experiments that mix, traditional digital watermarking Verification System can't be distinguished preceding two kinds carrier, therefore directly four kinds of all 100 carrier pictures are authenticated by watermark authentication 3 parts, the watermark authentication mistake that finally causes preceding two kinds of carriers, the authentication error rate reaches 50%, and promptly preceding two kinds of 50 carrier pictures all are authenticated to be the carrier picture that is destroyed or distort; But utilize the present invention's discriminating digit watermark authentication system then can judge that by discerning watermark 4 parts and back two kinds of 50 carrier pictures effectively distinguish to preceding two kinds of 50 carrier pictures, be that the present invention does not authenticate preceding two kinds of 50 carrier pictures, only back two kinds of 50 carrier pictures are authenticated, thereby avoided the watermark authentication mistake, and, make authentication efficient of the present invention improve nearly 50% owing to only back two kinds of 50 carrier pictures are authenticated.
In the art, the present invention can be provided with the algorithm complex that can discern watermark authentication and watermark authentication as required, regulates watermark authentication efficient.For example can all be designed to the high authentication of algorithm complex, thereby obtain the highest authentication result of degree of accuracy discerning watermark authentication and watermark authentication.Also can all be designed to the low authentication of algorithm complex, thereby obtain speed authentication result faster discerning watermark authentication and watermark authentication.Can also only can discern watermark and be designed to high complexity algorithm, thereby guarantee to identify non-one's own side's carrier or non-one's own side specifies carrier.Authenticating water-mark can be designed to high complexity algorithm again, thereby improve the discrimination that identification carrier is destroyed.
The invention provides a kind of thinking and method of watermark authentication system; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.The all available prior art of each component part not clear and definite in the present embodiment is realized.
Claims (5)
1, a kind of watermark authentication system is characterized in that, this system comprises: watermark embeds, can discern watermark extracting, can discern watermark judgement and watermark authentication;
Described watermark embeds and comprises: embed the authenticating water-mark of appointment and the watermark discerned of appointment in one's own side's initial carrier;
Described watermark extracting is: under one's own side's initial carrier and situation that dissident's carrier information mixes, and the watermark extracting discerned that all carriers are carried out appointment, and judge as discerning the input information that watermark judges;
Describedly discern watermark and judge and to comprise: the initial carrier of the watermark authentication discerned that will be by appointment is as the input information of watermark authentication; Will be not the carrier of the watermark authentication discerned by appointment, then will reject by the watermark the discerned corresponding vectors of authentication;
Described watermark authentication is: the authenticating water-mark of appointment authenticates in the initial carrier that the step is imported in the extraction, and the authentication output result.
2, watermark authentication system according to claim 1 is characterized in that, described watermark authentication is the high authentication of algorithm complex.
3, watermark authentication system according to claim 1 is characterized in that, described watermark authentication is the low authentication of algorithm complex.
4, watermark authentication system according to claim 1 is characterized in that, the described watermark authentication of discerning is the high authentication of algorithm complex.
5, watermark authentication system according to claim 1 is characterized in that, the described watermark authentication of discerning is the high authentication of algorithm complex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102361263A CN101436296A (en) | 2008-11-24 | 2008-11-24 | Watermark authentication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102361263A CN101436296A (en) | 2008-11-24 | 2008-11-24 | Watermark authentication system |
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| CN101436296A true CN101436296A (en) | 2009-05-20 |
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| CNA2008102361263A Pending CN101436296A (en) | 2008-11-24 | 2008-11-24 | Watermark authentication system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250658A (en) * | 2010-05-19 | 2011-11-23 | 上海标氢气体技术有限公司 | Method for preparing liquefied natural gas by converting raw materials of coke oven gas and blast furnace gas |
| CN106156655A (en) * | 2015-03-26 | 2016-11-23 | 中国科学院声学研究所 | The compressing file of a kind of facing cloud storage and authentication method |
| CN114021085A (en) * | 2021-11-03 | 2022-02-08 | 广州智算信息技术有限公司 | Big data security digital watermarking system based on artificial intelligence |
-
2008
- 2008-11-24 CN CNA2008102361263A patent/CN101436296A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250658A (en) * | 2010-05-19 | 2011-11-23 | 上海标氢气体技术有限公司 | Method for preparing liquefied natural gas by converting raw materials of coke oven gas and blast furnace gas |
| CN106156655A (en) * | 2015-03-26 | 2016-11-23 | 中国科学院声学研究所 | The compressing file of a kind of facing cloud storage and authentication method |
| CN106156655B (en) * | 2015-03-26 | 2019-01-08 | 中国科学院声学研究所 | A kind of compressing file and authentication method towards cloud storage |
| CN114021085A (en) * | 2021-11-03 | 2022-02-08 | 广州智算信息技术有限公司 | Big data security digital watermarking system based on artificial intelligence |
| CN114021085B (en) * | 2021-11-03 | 2022-07-01 | 广州智算信息技术有限公司 | Big data security digital watermarking system based on artificial intelligence |
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Open date: 20090520 |