CN101997857A - Registration and identification method based on content ID certificate, and content off-line identification system - Google Patents
Registration and identification method based on content ID certificate, and content off-line identification system Download PDFInfo
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- CN101997857A CN101997857A CN2009101675817A CN200910167581A CN101997857A CN 101997857 A CN101997857 A CN 101997857A CN 2009101675817 A CN2009101675817 A CN 2009101675817A CN 200910167581 A CN200910167581 A CN 200910167581A CN 101997857 A CN101997857 A CN 101997857A
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Abstract
The invention provides a registration and identification method based on a content ID certificate and a content off-line identification system, wherein a content ID, a certificate serial number, a management center signature of the content ID, a content ID certificate signature institution, a content fingerprint extraction algorithm identifier, and a content ID certificate of content fingerprint are involved. By using the method and the system of the invention, the detailed content information can be obtained conveniently and reliably, the content identification and match are facilitated, and the off-line identification and match are possible.
Description
Technical field
The present invention relates to the security fields of information industry, particularly based on the digital media content certificate technology of PKI.
Background technology
Digital media content is meant digitized audio frequency, video, picture and text etc.Good media content can make the each side in the industrial chain all obtain income.Along with the continuous development as Web2.0 and UGC new technologies such as (User Generate Content, user-generated contents), the presentation mode of content becomes flexible and changeable.For safeguarding number one, traditional content supplier has higher requirement to the signon protection of content, and common terminal use equally also wishes the content acquisition signon protection of oneself creating and discerned exactly and retrieve.
The registration of content, identification and retrieval are complicated system engineering, have become the research topic of more and more being paid close attention to, and the deployment to new business has simultaneously also proposed new challenge.Potential application comprises: charging, content search/management, content copyright supervision, use statistics, information filtering, content tracing, selection is recorded and reset and trigger advertisement etc. at the broadcast channel medium-long range.
In the prior art, only can realize adopting contents attribute that content is registered, discerned and retrieves, wherein contents attribute comprises: content author, content creating time, content life cycle and content summary etc.Yet, adopt contents attribute to carry out registration, identification and the retrieval of content, because the not uniqueness of related content attribute causes and can't accurately locate content, and identification and result for retrieval are inaccurate.For example, when carrying out information filtering in the prior art, some keywords are set usually, content and keyword are mated, the content of filtering and keyword coupling, the defective of this mode is apparent, can't realize accurate filtration, error rate is very high.
If therefore in the content registration process, distribute in the territory, a region or globally unique content ID (Identity for certain content, identifier), this content ID and content are for concerning one to one, after in case the content of applying for the registration of obtains content ID, the searching of content, discern, a difficult problem that filtration etc. need be used the content match technology will be readily solved.Content ID is as the pass key index of content, its importance just as citizen ID certificate number in the citizen.Therefore the content ID administrative center (CIM) by authority provides content ID certificate, is a kind of method of effective recognition digital media content.
In information security, satisfy X.509 that the certificate of standard is a kind of the most popular public key certificate, must comprise following content at least based on standard certificate X.509:
1. version number: identification is used for the X.509 standard version of this certificate, and this can influence, and institute can specified message in the certificate.Up to now, defined version has three.
2. sequence number: the entity of providing certificate has a responsibility for being the certificate assigned serial number, so that it is different from other certificate that this entity is provided.This information purpose is a lot.For example, if a certain certificate is undone, its sequence number will be put in the certificate revocation inventory (CRL).
3. signature algorithm identifier accords with: employed signature algorithm when being used for specifying with the CA grant a certificate.Employed public key algorithm and HASH algorithm when algorithm identifier is used for specifying the CA grant a certificate must indicate normal structure (as ISO) registration to the world.
4. do not sign and issue person's name: the X.500 title of signing the entity of writing certificate.It is generally a CA.Use this certificate to mean trust to sign the entity of writing this certificate (note: (for example root or top layer CA certificate) in some cases, the certificate of oneself is write in the signed by countersign).
5. valid expiration date: the effective time of certificate comprises two dates: the certificate date and time that phase and certificate lost efficacy that comes into effect.Specified this between two time effectively.
6. main information: the X.500 unique name (DN, Distinguished Name) that is used for specifying certificate user.
7. main body public key information: this is by the PKI of named entity, comprises algorithm identifier of specifying common key cryptosystem under this key and the key parameter that all are relevant simultaneously.
At present, use for reference the X.509 definition mode of public key certificate, in conjunction with the characteristics of digital media content self, content ID certificate carries out the identification of digital content, does not also have a kind of valid approach.
Summary of the invention
And problem that can not identified off-line inaccurate at present content recognition coupling and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of digital content certificate, to address the above problem.
The present invention proposes a kind of register method of content-based identifier ID certificate, may further comprise the steps: send the content registration solicited message to content ID administrative center, wherein comprise in the solicited message: (1) content itself, the perhaps identifier of (2) user supplied video content using fingerprints and given content ID administrative center employed user supplied video content using fingerprints extraction algorithm when grant a certificate; Content ID administrative center handles solicited message and returns result.
Wherein, handle solicited message and return in the step of result in content ID administrative center, if comprise content in (1) in the solicited message, then the fingerprint extraction algorithm is selected by content ID administrative center, based on the algorithm computation user supplied video content using fingerprints, and signs and issues content ID certificate; If comprise the content in (2) in the solicited message, then content ID certificate is is directly signed and issued by content ID administrative center.
Wherein, comprise in the content ID certificate that content ID administrative center signs and issues: the signature of content ID, certificate serial number, content ID administrative center, content ID certificate issuance mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints.
Wherein, before content ID certificate is signed and issued by content ID administrative center, further comprising the steps of: the user supplied video content using fingerprints of being deposited in the user supplied video content using fingerprints database with user supplied video content using fingerprints and content ID administrative center compares, if in database, there is the user supplied video content using fingerprints of institute's request content, then send registered message.
The invention allows for a kind of recognition methods of content-based identifier ID certificate, may further comprise the steps: the content recognition client sends content ID certificate synchronization request to content ID administrative center; Content ID administrative center is in response to content ID certificate synchronization request, synchronously send content ID certificate to the content identify customer end, comprise in the content ID certificate: the signature of content ID, certificate serial number, content ID administrative center, content ID certificate issuance mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints; Content recognition client received content identification request; The content recognition client is carried out content recognition and is fed back the result who is discerned according to content recognition request that is received and content ID certificate.
Wherein, content ID administrative center is in response to content ID certificate synchronization request, after the content identify customer end synchronously sends the step of content ID certificate, further comprising the steps of: the validity of content recognition client validation content ID certificate signature, sign and issue if certificate is the trusted content ID administrative center of content recognition client, then accept content ID certificate.
Wherein, carry out according to the content recognition request that is received and content ID certificate in the result's that content recognition and feedback discerned the step in the content recognition client, specifically may further comprise the steps: the content recognition client is according to the user supplied video content using fingerprints of the identification of the user supplied video content using fingerprints identifier calculation request in content ID certificate content, the user supplied video content using fingerprints that calculates and the user supplied video content using fingerprints in the described content ID certificate are mated, and feedback is based on the result of coupling.
Wherein, carry out according to the content recognition request that is received and content ID certificate in the result's that content recognition and feedback discerned the step in the content recognition client, specifically may further comprise the steps: the content recognition client is mated the content of being asked and the content in the content ID certificate, and feedback is based on the result of described coupling.
The invention allows for a kind of content identified off-line system, comprising: the content registration client sends the content registration solicited message to content identifier ID administrative center; Content ID administrative center, be used for content-based registration information, sign and issue content ID certificate, comprise in the content ID certificate: the signature of content ID, certificate serial number, content ID administrative center, content ID certificate issuance mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints; The content recognition client is obtained synchronous content ID certificate from content ID administrative center, to carry out content recognition based on the content recognition request that receives.
The invention provides a kind of form of content ID certificate, and the registration of content ID certificate and use flow process, by content ID certificate, the details of obtaining content that can be convenient and reliable make things convenient for content recognition and coupling; The largest benefit of content ID certificate is to make identified off-line and coupling become possibility, seems more meaningful for content recognition of having relatively high expectations for some real-time and the matching process.Under the situation that does not have content ID certificate, identification and matching process can only be finished at CIM; And by issuing content ID certificate, content recognition and coupling can reliably be finished in the content recognition client efficiently, and need not to carry out complicated interaction flow with CIM, for identification and the coupling scene that the data bandwidth resource is more limited and real-time is had relatively high expectations between identify customer end and the CIM, be a kind of effective solution route.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the system of a kind of off-line content identification of embodiment of the invention use;
Fig. 2 is a content ID certificate registration flow chart of the present invention;
Fig. 3 is the off-line content identification process figure of use content ID certificate of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of system of content identified off-line mainly comprises content ID administrative center (CIM), content registration client and content recognition client.
Wherein CIM is used for the contents processing register requirement, distribute content ID, sign and issue content ID certificate, contents processing ONLINE RECOGNITION request etc., based on described content registration solicited message, sign and issue content ID certificate, comprise in the content ID certificate: the signature of content ID, certificate serial number, content ID administrative center, content ID certificate issuance mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints.
Wherein the content registration client is used to submit to the content registration request, receives the content registration result that CIM returns, and obtains synchronous content ID certificate from content ID administrative center, to carry out content recognition based on the content recognition request that receives.
Wherein the content recognition client is used for contents processing ID certificate synchronization request and receiving course, and the validity of checking content ID certificate is handled off-line content identification request, returns the result of request identification.
The content registration client is registered to the CIM request content.At least comprise content itself or user supplied video content using fingerprints, holder of certificate's name in the solicited message; If what comprise in the solicited message is user supplied video content using fingerprints, then also need comprise user supplied video content using fingerprints extraction algorithm identifier in solicited message.
After CIM received solicited message, if what comprise in the solicited message is content itself but not user supplied video content using fingerprints, CIM selected fingerprint extraction algorithm computation user supplied video content using fingerprints according to content type and form and compares with the user supplied video content using fingerprints in the CIM user supplied video content using fingerprints database so; If what comprise in the solicited message is user supplied video content using fingerprints but not content itself, then directly and the user supplied video content using fingerprints in the CIM user supplied video content using fingerprints database compare, judge whether to register.
If the content of request registration was registered, then return " registered " information, otherwise sign and issue content ID certificate, and store this content ID certificate at CIM to registered client.
In addition:
Content recognition client-requested CIM synchronizing content ID certificate.
Content ID certificate is to content identify customer end synchronizing content ID certificate.
The content recognition client at first by the validity of checking content ID certificate signature, if certificate is signed and issued for its believable CIM, then pass through by checking.
The content recognition request.
User supplied video content using fingerprints extraction algorithm according to user supplied video content using fingerprints extraction algorithm identifier appointment in the content ID certificate carries out fingerprint extraction to the request content identified, calculates its user supplied video content using fingerprints; If by discerning according to content ID, then need not user supplied video content using fingerprints and extract, directly provide content ID to get final product; Mate according to the user supplied video content using fingerprints in user supplied video content using fingerprints that calculates and the content ID certificate; Perhaps mate according to content ID that provides and the content ID in the content ID certificate.
If the match is successful, then this content is registered; Otherwise this content is unregistered.
Content ID certificate of the present invention comprises following content:
1. content ID: give the ID that the content of each request registration is distributed by CIM, this ID will be as the identify label of content, can be a string numeral or character string sequence number according to the specific coding form.
2. certificate serial number: the entity of providing certificate has a responsibility for being the certificate assigned serial number, so that it is different from other certificate that this entity is provided.
3. sign: the identifier of employed public key algorithm and CIM are used for signing and change the HASH function of content ID certificate when being used for specifying the CIM grant a certificate, and employed public key algorithm and HASH function must be registered to the well-known normal structure in the world (as ISO).
4. content ID certificate issuance mechanism: the name of promptly sending the CIM of mechanism of this certificate.
5. user supplied video content using fingerprints information: comprise identifier and user supplied video content using fingerprints.The user supplied video content using fingerprints extraction algorithm is used for the algorithm that user supplied video content using fingerprints extracts in the given content ID certificate.Employed user supplied video content using fingerprints extraction algorithm when user supplied video content using fingerprints extraction algorithm identifier is used for specifying the CIM grant a certificate must be registered to the well-known normal structure in the world (as MPEG).User supplied video content using fingerprints is a series of Bit Strings, and this Bit String is for to extract one section summary by given content fingerprint extraction algorithm from a content, and this summary can this content of unique identification.
In addition, content ID certificate of the present invention also can comprise:
6. content ID validity period of certificate limit: the effective time of certificate comprises two dates: the certificate date and time that phase and certificate lost efficacy that comes into effect.Specified this between two time effectively.
7. contents attribute: comprise rating information, language of contents of summary, the content of title, the content of the type of the person of copyright institute, copyright notice/, content of content and form, content etc.
8. expansion: be provided with the back expansion and use.
As shown in Figure 2, content ID certificate registration flow process of the present invention is as follows:
Step 101: the content registration client is registered to the CIM request content.At least comprise content itself or user supplied video content using fingerprints, holder of certificate's name in the solicited message; If what comprise in the solicited message is user supplied video content using fingerprints, then also need comprise user supplied video content using fingerprints extraction algorithm identifier in solicited message;
After step 102:CIM receives solicited message, if what comprise in the solicited message is content itself but not user supplied video content using fingerprints, CIM selects fingerprint extraction algorithm computation user supplied video content using fingerprints according to content type and form and compares with the user supplied video content using fingerprints in the CIM user supplied video content using fingerprints database so; If what comprise in the solicited message is user supplied video content using fingerprints but not content itself, then directly and the user supplied video content using fingerprints in the CIM user supplied video content using fingerprints database compare, judge whether to register;
Step 103: if the content of request registration was registered, then return " registered " information, otherwise sign and issue content ID certificate, and store this content ID certificate at CIM to registered client;
As shown in Figure 3, use the content recognition flow process of content ID certificate as follows:
Step 201: content recognition client-requested CIM synchronizing content ID certificate;
Step 202: content ID certificate is to content identify customer end synchronizing content ID certificate;
Step 203: the content recognition client at first by the validity of checking content ID certificate signature, if certificate is signed and issued for its believable CIM, then pass through by checking;
Step 204: content recognition request;
Step 205: the user supplied video content using fingerprints extraction algorithm according to user supplied video content using fingerprints extraction algorithm identifier appointment in the content ID certificate carries out fingerprint extraction to the request content identified, calculates its user supplied video content using fingerprints; If by discerning according to content ID, then need not user supplied video content using fingerprints and extract, directly provide content ID to get final product; Mate according to the user supplied video content using fingerprints in user supplied video content using fingerprints that calculates and the content ID certificate; Perhaps mate according to content ID that provides and the content ID in the content ID certificate;
Step 206: if the match is successful, then this content is registered; Otherwise this content is unregistered.
Certainly, the present invention also can have other various embodiments, also can handle online identification request such as identify customer end, and this identification processing of request needs and CIM finishes together.
The technical staff in field should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the register method of a content-based identifier ID certificate is characterized in that, said method comprising the steps of:
Send the content registration solicited message to content ID administrative center, comprise in the wherein said solicited message:
(1) content itself, perhaps
(2) user supplied video content using fingerprints and the identifier of specifying described content ID administrative center employed user supplied video content using fingerprints extraction algorithm when grant a certificate;
Described content ID administrative center's processes said request information is also returned result.
2. method according to claim 1 is characterized in that, in described content ID administrative center's processes said request information and return in the step of result,
If comprise the content in (1) in the described request information, the fingerprint extraction algorithm is selected by then described content ID administrative center, based on described algorithm computation user supplied video content using fingerprints, and signs and issues content ID certificate;
If comprise the content in (2) in the described request information, content ID certificate is is directly signed and issued by then described content ID administrative center.
3. method according to claim 2, it is characterized in that, comprise in the content ID certificate that described content ID administrative center signs and issues: signature, content ID certificate issuance mechanism, user supplied video content using fingerprints extraction algorithm identifier and the user supplied video content using fingerprints of content ID, certificate serial number, described content ID administrative center.
4. method according to claim 3 is characterized in that, and is before content ID certificate is signed and issued by described content ID administrative center, further comprising the steps of:
The user supplied video content using fingerprints of being deposited in the user supplied video content using fingerprints database with described user supplied video content using fingerprints and described content ID administrative center compares, if there is the user supplied video content using fingerprints of institute's request content in described database, then sends registered message.
5. the recognition methods of a content-based identifier ID certificate is characterized in that, said method comprising the steps of:
The content recognition client sends content ID certificate synchronization request to content ID administrative center;
Described content ID administrative center is in response to described content ID certificate synchronization request, synchronously send content ID certificate to the content identify customer end, comprise in the described content ID certificate: signature, content ID certificate issuance mechanism, user supplied video content using fingerprints extraction algorithm identifier and the user supplied video content using fingerprints of content ID, certificate serial number, described content ID administrative center;
Described content recognition client received content identification request;
Described content recognition client is carried out content recognition and is fed back the result who is discerned according to content recognition request that is received and described content ID certificate.
6. method according to claim 5 is characterized in that, described content ID administrative center is in response to described content ID certificate synchronization request, and is after the content identify customer end synchronously sends the step of content ID certificate, further comprising the steps of:
The validity of the described content ID certificate signature of described content recognition client validation is signed and issued if described certificate is the trusted content ID administrative center of described content recognition client, then accepts described content ID certificate.
7. method according to claim 5 is characterized in that, carries out according to the content recognition request that is received and described content ID certificate specifically may further comprise the steps in the result's that content recognition and feedback discerned the step in described content recognition client:
Described content recognition client is according to the user supplied video content using fingerprints of the identification of the user supplied video content using fingerprints identifier calculation request in described content ID certificate content, the described user supplied video content using fingerprints that calculates and the user supplied video content using fingerprints in the described content ID certificate are mated, and feedback is based on the result of described coupling.
8. method according to claim 5 is characterized in that, carries out according to the content recognition request that is received and described content ID certificate specifically may further comprise the steps in the result's that content recognition and feedback discerned the step in described content recognition client:
Described content recognition client is mated the content of being asked and the content in the described content ID certificate, and feedback is based on the result of described coupling.
9. content identified off-line system is characterized in that described system comprises:
The content registration client sends the content registration solicited message to content identifier ID administrative center;
Described content ID administrative center, be used for based on described content registration solicited message, sign and issue content ID certificate, comprise in the described content ID certificate: signature, content ID certificate issuance mechanism, user supplied video content using fingerprints extraction algorithm identifier and the user supplied video content using fingerprints of content ID, certificate serial number, described content ID administrative center;
The content recognition client is obtained synchronous content ID certificate from content ID administrative center, to carry out content recognition based on the content recognition request that receives.
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| CN200910167581.7A CN101997857B (en) | 2009-08-27 | 2009-08-27 | Registration and identification method based on content ID certificate, and content off-line identification system |
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| CN200910167581.7A CN101997857B (en) | 2009-08-27 | 2009-08-27 | Registration and identification method based on content ID certificate, and content off-line identification system |
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| CN101997857B CN101997857B (en) | 2015-06-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107611A (en) * | 2005-01-24 | 2008-01-16 | 皇家飞利浦电子股份有限公司 | Private and controlled ownership sharing |
| CN101251881A (en) * | 2008-04-07 | 2008-08-27 | 华为技术有限公司 | Device, system and method for recognizing content |
| CN101390070A (en) * | 2006-02-28 | 2009-03-18 | 微软公司 | Secure content descriptions |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107611A (en) * | 2005-01-24 | 2008-01-16 | 皇家飞利浦电子股份有限公司 | Private and controlled ownership sharing |
| CN101390070A (en) * | 2006-02-28 | 2009-03-18 | 微软公司 | Secure content descriptions |
| CN101251881A (en) * | 2008-04-07 | 2008-08-27 | 华为技术有限公司 | Device, system and method for recognizing content |
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Inventor after: Li Chaodong Inventor before: Lin Zhaoji Inventor before: Li Yuan Inventor before: Teng Zhimeng |
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Effective date of registration: 20170901 Address after: 243041 No. 1944 quarry Road, Ma'anshan City, Anhui Province Patentee after: Open media Limited by Share Ltd. Address before: 518057 Nanshan District science and technology, Guangdong Province, South Road, No. 55, No. Patentee before: ZTE Corp. |
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