CN101997857B - 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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- CN101997857B CN101997857B CN200910167581.7A CN200910167581A CN101997857B CN 101997857 B CN101997857 B CN 101997857B CN 200910167581 A CN200910167581 A CN 200910167581A CN 101997857 B CN101997857 B CN 101997857B
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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 technique of PKI.
Background technology
Digital media content refers to digitized audio frequency, video, picture and text etc.Good media content can make each side in industrial chain all obtain income.Along with the development of the such as new technology such as Web2.0 and UGC (User Generate Content, user-generated content), the presentation mode of content becomes flexible and changeable.For safeguarding number one, the signon protection of traditional content supplier to content is had higher requirement, and common terminal use equally also wishes that the content oneself created obtains signon protection and is accurately identified and retrieves.
The registration of content, identification and retrieval are complicated system engineerings, have become more and more concerned research topic, it is also proposed new challenge simultaneously to the deployment of new business.Potential application comprises: charging, content search/management, content copyright supervision, Using statistics, information filtering, content tracing, selection record and reset and at broadcast channel medium-long range trigger ad etc.
In prior art, only can realize adopting contents attribute to register content, identify and retrieve, wherein contents attribute comprises: content author, content creating time, content life cycle and content summary etc.But, adopt contents attribute to carry out the registration of content, identification and retrieval, due to the nonuniqueness of related content attribute, cause accurately to locate content, and identify and result for retrieval inaccurate.Such as, when carrying out information filtering in prior art, usually arrange some keywords, content mated with keyword, the content of filtering and Keywords matching, the defect of this mode is apparent, cannot realize accurate filtration, and error rate is very high.
If be therefore in certain territory, a content assignment region in content registration process or globally unique content ID (Identity, identifier), this content ID and content are relation one to one, once the content of applying for the registration of obtains after content ID, the searching of content, identify, filtration etc. needs the difficult problem using content matching technology to be readily solved.Content ID as the pass key index of content, its importance as citizen ID certificate number in citizen.Therefore providing content ID certificate by the content ID administrative center (CIM) of authority, is a kind of method of effective discriminating digit media content.
In information security, the certificate meeting X.509 standard is a kind of public key certificate the most popular, must at least comprise following content based on X.509 standard certificate:
1. version number: the version identifying the X.509 standard being used for this certificate, this can affect the information can specified in certificate.Up to now, defined version has three.
2. sequence number: the entity providing certificate is had a responsibility for as certificate assigned serial number, with other certificate making it be different from the granting of this entity.This information purpose is a lot.Such as, if a certain certificate is undone, its sequence number will be put in certificate revocation inventory (CRL).
3. signature algorithm identifier symbol: be used to specify the signature algorithm with using during CA grant a certificate.The public key algorithm that algorithm identifier uses when being used to specify CA grant a certificate and HASH algorithm, the Xu Xiang world indicates normal structure (as ISO) registration.
4. sign originator name: sign the X.500 title writing the entity of certificate.It is generally a CA.Use this certificate to mean and trust the entity (note: in some cases (such as root or top layer CA certificate), signed by conutersigns the certificate writing oneself) signed and write this certificate.
5. valid expiration date: the certificate effective time comprises two dates: certificate comes into effect the date and time of phase and Certificate Revocation.Between these specified two times effectively.
6. main information: the X.500 unique name (DN, Distinguished Name) being used to specify certificate user.
7. main body public key information: this is by the PKI of named entity, comprises the algorithm identifier and all relevant key parameters of specifying common key cryptosystem belonging to this key simultaneously.
At present, use for reference the definition mode of X.509 public key certificate, in conjunction with the feature of digital media content self, content ID certificate carries out the identification of digital content, does not also have a kind of effective approach.
Summary of the invention
For current content recognition coupling inaccurate and can not identified off-line problem and the present invention is proposed, for this reason, main purpose of the present invention is to provide a kind of digital content certificate, to solve the problem.
The present invention proposes a kind of register method of content-based identifier ID certificate, comprise the following steps: send content registration solicited message to content ID administrative center, wherein comprise in solicited message: (1) content itself, or the identifier of user supplied video content using fingerprints extraction algorithm that (2) user supplied video content using fingerprints and given content ID administrative center use when grant a certificate; Content ID administrative center process solicited message also returns result.
Wherein, process solicited message in content ID administrative center and return in the step of result, if comprise the content in (1) in solicited message, then fingerprint extraction algorithm is selected by content ID administrative center, based on algorithm Computed-torque control fingerprint, and sign and issue content ID certificate; If comprise the content in (2) in solicited message, then content ID certificate is is directly signed and issued by content ID administrative center.
Wherein, the content ID certificate that content ID administrative center signs and issues comprises: content ID, certificate serial number, the signature of content ID administrative center, content ID certificate sign and issue 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 deposited in the user supplied video content using fingerprints database of user supplied video content using fingerprints and content ID administrative center is compared, if there is the user supplied video content using fingerprints of institute's request content in a database, then send registered message.
The invention allows for a kind of recognition methods of content-based identifier ID certificate, comprise the following steps: 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 content identify customer end, content ID certificate comprises: content ID, certificate serial number, the signature of content ID administrative center, content ID certificate sign and issue mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints; Content recognition client receives content recognition request; Content recognition client is carried out content recognition according to received content recognition request and content ID certificate and is also fed back the result identified.
Wherein, content ID administrative center is in response to content ID certificate synchronization request, after 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, if the trusted content ID administrative center that certificate is content recognition client signs and issues, then accept content ID certificate.
Wherein, carry out content recognition in content recognition client according to received content recognition request and content ID certificate also to feed back in the step of the result identified, specifically comprise the following steps: content recognition client is according to the user supplied video content using fingerprints of the user supplied video content using fingerprints identifier calculation request identification content in content ID certificate, the user supplied video content using fingerprints calculated is mated with the user supplied video content using fingerprints in described content ID certificate, and feedback is based on the result of coupling.
Wherein, carry out content recognition in content recognition client according to received content recognition request and content ID certificate also to feed back in the step of the result identified, specifically comprise the following steps: asked content is mated with the content in content ID certificate by content recognition client, and feedback is based on the result of described coupling.
The invention allows for a kind of content offline recognition system, comprising: content registration client, send content registration solicited message to content identifier ID administrative center; Content ID administrative center, for content-based registration information, sign and issue content ID certificate, content ID certificate comprises: content ID, certificate serial number, the signature of content ID administrative center, content ID certificate sign and issue mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints; Content recognition client, obtains synchronous content ID certificate from content ID administrative center, to carry out content recognition based on the content recognition request received.
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 acquisition content that can be convenient and reliable, facilitate content recognition and coupling; The largest benefit of content ID certificate makes identified off-line and coupling become possibility, seems more meaningful for the content recognition higher for some requirement of real-time and matching process.When not having content ID certificate, identification and matching process can only complete at CIM; And by issuing content ID certificate, content recognition and coupling can complete in content recognition client reliably efficiently, and without the need to carrying out complicated interaction flow with CIM, more limited and the identification that requirement of real-time is higher and coupling scene for data bandwidth resource between identify customer end and CIM are a kind of effective solution routes.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the system of a kind of off-line content identification that the embodiment of the present invention uses;
Fig. 2 is content ID certificate register flow path figure of the present invention;
Fig. 3 is the off-line content identification process figure of use content ID certificate of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
As shown in Figure 1, a kind of system of content offline identification mainly comprises content ID administrative center (CIM), content registration client and content recognition client.
Wherein CIM is for the treatment of content registration request, 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, content ID certificate comprises: content ID, certificate serial number, the signature of content ID administrative center, content ID certificate sign and issue mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints.
Wherein content registration client is for submitting content registration request to, receives the content registration result that CIM returns, obtains synchronous content ID certificate, to carry out content recognition based on the content recognition request received from content ID administrative center.
Wherein content recognition client is for the treatment of content ID certificate synchronization request and receiving course, the validity of checking content ID certificate, and process off-line content identification request, returns the result that request identifies.
Content registration client is registered to CIM request content.Content itself or user supplied video content using fingerprints, holder of certificate's name is at least comprised in solicited message; If what comprise in solicited message is user supplied video content using fingerprints, then also need to comprise user supplied video content using fingerprints extraction algorithm identifier in solicited message.
After CIM receives solicited message, if comprise in solicited message be content itself but not user supplied video content using fingerprints, so CIM selects fingerprint extraction algorithm Computed-torque control fingerprint according to content type and form and compares with the user supplied video content using fingerprints in CIM user supplied video content using fingerprints database; If what comprise in solicited message is user supplied video content using fingerprints and non-content itself, then the user supplied video content using fingerprints directly and in CIM user supplied video content using fingerprints database is compared, and judges whether registered.
If the content of request registration is registered, then returns " registered " information, otherwise sign and issue content ID certificate to registered client, and store this content ID certificate at CIM.
In addition:
Content recognition client-requested CIM synchronizing content ID certificate.
Content ID certificate is to content identify customer end synchronizing content ID certificate.
First content recognition client by the validity of checking content ID certificate signature, if certificate is signed and issued for its believable CIM, is then verified.
Content recognition request.
According to the user supplied video content using fingerprints extraction algorithm that user supplied video content using fingerprints extraction algorithm identifier in content ID certificate is specified, fingerprint extraction is carried out to the content that request identifies, calculate its user supplied video content using fingerprints; If by identifying according to content ID, then extract without the need to user supplied video content using fingerprints, directly provide content ID; Mate according to the user supplied video content using fingerprints in the user supplied video content using fingerprints calculated and content ID certificate; Or mate according to the content ID in the content ID provided and 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: the ID being given the content assignment of each request registration by CIM, this ID using the identify label as content, can be a string numeral according to specific coding form or character string sequence number.
2. certificate serial number: the entity providing certificate is had a responsibility for as certificate assigned serial number, with other certificate making it be different from the granting of this entity.
3. sign: the identifier of the public key algorithm used when being used to specify CIM grant a certificate and CIM are used for signing and change the HASH function of content ID certificate, the public key algorithm used and HASH function, international well-known normal structure (as the ISO) registration of Xu Xiang.
4. content ID certificate signs and issues mechanism: the name namely sending the mechanism CIM of this certificate.
5. user supplied video content using fingerprints information: comprise identifier and user supplied video content using fingerprints.User supplied video content using fingerprints extraction algorithm is used to specify the algorithm that in content ID certificate, user supplied video content using fingerprints extracts.The user supplied video content using fingerprints extraction algorithm that user supplied video content using fingerprints extraction algorithm identifier uses when being used to specify CIM grant a certificate, international well-known normal structure (as the MPEG) registration of Xu Xiang.User supplied video content using fingerprints is a series of Bit String, and this Bit String for extract one section of summary by given content fingerprint extraction algorithm from a content, and this summary can uniquely identify this content.
In addition, content ID certificate of the present invention also can comprise:
6. content ID certificate valid expiration date: the certificate effective time comprises two dates: certificate comes into effect the date and time of phase and Certificate Revocation.Between these specified two times effectively.
7. contents attribute: comprise the copyright institute person of content, copyright notice, the type of content and form, the title of content, the summary of content, the rating information of content, the language etc. of content.
8. expand: for expanding later.
As shown in Figure 2, content ID certificate register flow path of the present invention is as follows:
Step 101: content registration client is registered to CIM request content.Content itself or user supplied video content using fingerprints, holder of certificate's name is at least comprised in solicited message; If what comprise in solicited message is user supplied video content using fingerprints, then also need to comprise user supplied video content using fingerprints extraction algorithm identifier in solicited message;
After step 102:CIM receives solicited message, if what comprise in solicited message is content itself but not user supplied video content using fingerprints, so CIM selects fingerprint extraction algorithm Computed-torque control fingerprint according to content type and form and compares with the user supplied video content using fingerprints in CIM user supplied video content using fingerprints database; If what comprise in solicited message is user supplied video content using fingerprints and non-content itself, then the user supplied video content using fingerprints directly and in CIM user supplied video content using fingerprints database is compared, and judges whether registered;
Step 103: if the content of request registration is registered, then return " registered " information, otherwise sign and issue content ID certificate to registered client, and store this content ID certificate at CIM;
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: first content recognition client by the validity of checking content ID certificate signature, if certificate is signed and issued for its believable CIM, is then verified;
Step 204: content recognition request;
Step 205: according to the user supplied video content using fingerprints extraction algorithm that user supplied video content using fingerprints extraction algorithm identifier in content ID certificate is specified, fingerprint extraction is carried out to the content that request identifies, calculate its user supplied video content using fingerprints; If by identifying according to content ID, then extract without the need to user supplied video content using fingerprints, directly provide content ID; Mate according to the user supplied video content using fingerprints in the user supplied video content using fingerprints calculated and content ID certificate; Or mate according to the content ID in the content ID provided and 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, and such as identify customer end also can process online identification request, and the process of this identification request needs to complete together with CIM.
The technical staff in field should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a register method for content-based identifier ID certificate, is characterized in that, said method comprising the steps of:
Send content registration solicited message to content ID administrative center, comprise in wherein said solicited message:
(1) content itself, or
(2) identifier of user supplied video content using fingerprints and the user supplied video content using fingerprints extraction algorithm of specifying described content ID administrative center to use when grant a certificate;
Described content ID administrative center processes said request information also returns result;
Wherein, return in the step of result in described content ID administrative center processes said request information,
If comprise the content in (1) in described request information, then fingerprint extraction algorithm is selected by described content ID administrative center, based on described algorithm Computed-torque control fingerprint, and signs and issues content ID certificate;
If comprise the content in (2) in described request information, then content ID certificate is is directly signed and issued by described content ID administrative center;
Wherein, the content ID certificate that described content ID administrative center signs and issues comprises: content ID, certificate serial number, the signature of described content ID administrative center, content ID certificate sign and issue mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints.
2. method according to claim 1, is characterized in that, 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 deposited in the user supplied video content using fingerprints database of described user supplied video content using fingerprints and described content ID administrative center is compared, if there is the user supplied video content using fingerprints of institute's request content in the database, then sends registered message.
3. a recognition methods for content-based identifier ID certificate, is characterized in that, said method comprising the steps of:
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 content identify customer end, described content ID certificate comprises: content ID, certificate serial number, the signature of described content ID administrative center, content ID certificate sign and issue mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints;
Described content recognition client receives content recognition request;
Described content recognition client is carried out content recognition according to received content recognition request and described content ID certificate and is also fed back the result identified.
4. method according to claim 3, is characterized in that, described content ID administrative center is in response to described content ID certificate synchronization request, after content identify customer end synchronously sends the step of content ID certificate, further comprising the steps of:
Described in described content recognition client validation, the validity of content ID certificate signature, if the trusted content ID administrative center that described certificate is described content recognition client signs and issues, then accepts described content ID certificate.
5. method according to claim 3, is characterized in that, carries out content recognition and also feeds back in the step of the result identified, specifically comprise the following steps in described content recognition client according to received content recognition request and described content ID certificate:
Described content recognition client is according to the user supplied video content using fingerprints of the user supplied video content using fingerprints identifier calculation request identification content in described content ID certificate, the described user supplied video content using fingerprints calculated is mated with the user supplied video content using fingerprints in described content ID certificate, and feedback is based on the result of described coupling.
6. method according to claim 3, is characterized in that, carries out content recognition and also feeds back in the step of the result identified, specifically comprise the following steps in described content recognition client according to received content recognition request and described content ID certificate:
Asked content is mated with the content in described content ID certificate by described content recognition client, and feedback is based on the result of described coupling.
7. a content offline recognition system, is characterized in that, described system comprises:
Content registration client, sends content registration solicited message to content identifier ID administrative center;
Described content ID administrative center, for based on described content registration solicited message, sign and issue content ID certificate, described content ID certificate comprises: content ID, certificate serial number, the signature of described content ID administrative center, content ID certificate sign and issue mechanism, user supplied video content using fingerprints extraction algorithm identifier and user supplied video content using fingerprints;
Content recognition client, obtains synchronous content ID certificate from content ID administrative center, to carry out content recognition based on the content recognition request received.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN101997857A CN101997857A (en) | 2011-03-30 |
| CN101997857B true 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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| CN101997857A (en) | 2011-03-30 |
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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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