CN110046649A - A kind of multimedia messages prison broadcasting method, apparatus and system based on block chain - Google Patents

A kind of multimedia messages prison broadcasting method, apparatus and system based on block chain Download PDF

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Publication number
CN110046649A
CN110046649A CN201910187483.3A CN201910187483A CN110046649A CN 110046649 A CN110046649 A CN 110046649A CN 201910187483 A CN201910187483 A CN 201910187483A CN 110046649 A CN110046649 A CN 110046649A
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China
Prior art keywords
data
prison
feature
multicast data
summarization
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CN201910187483.3A
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Chinese (zh)
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CN110046649B (en
Inventor
张鸿
杨凡
杨磊
蒋海滔
郑坤坤
吴军
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Advanced New Technologies Co Ltd
Advantageous New Technologies Co Ltd
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Alibaba Group Holding Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
    • G06F16/73—Querying
    • G06F16/738—Presentation of query results
    • G06F16/739—Presentation of query results in form of a video summary, e.g. the video summary being a video sequence, a composite still image or having synthesized frames
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G06F18/20—Analysing
    • G06F18/22—Matching criteria, e.g. proximity measures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • G06Q30/0241—Advertisements
    • G06Q30/0248—Avoiding fraud
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/46—Descriptors for shape, contour or point-related descriptors, e.g. scale invariant feature transform [SIFT] or bags of words [BoW]; Salient regional features
    • G06V10/462—Salient features, e.g. scale invariant feature transforms [SIFT]

Abstract

This specification embodiment provides a kind of multimedia messages prison broadcasting method, apparatus and system based on block chain.The described method includes: acquiring and obtaining the prison multicast data of multimedia messages, the first data summarization of the prison multicast data is calculated, and is signed to first data summarization, the first data summarization after signature is distributed in block chain；Prison multicast data is sent to service server again, so that the service server calculates the second data summarization of the prison multicast data, first data summarization and the second data summarization are verified, and after being verified, the feature of the prison multicast data is generated, and calculates the feature of reference data, the feature of the prison multicast data is matched with the feature of the reference data, to which according to matching result, the prison of multimedia messages is broadcast in realization.

Description

A kind of multimedia messages prison broadcasting method, apparatus and system based on block chain
Technical field
This specification is related to network communication technology field more particularly to a kind of multimedia messages prison side of broadcasting based on block chain Method, apparatus and system.
Background technique
With the progress of science and technology, the continuous development of media industry, media influence increasingly daily life Greatly, and then the rapid development of media advertisement industry has been pushed.In the launch process of media advertisement, advertiser is existed by media provider Specified time launches advertisement (for example, open air, community, the media advertisement in market etc.) under various lines, and feelings are printed in advertisement in order to understand Condition and monitoring advertisement have the situations such as error-free periodical, leakage are printed, advertisement is abnormal in playing, and meet the monitoring need that advertiser plays advertisement It asks, it is therefore desirable to execute advertisement detecting under line accurately to understand the actual conditions of advertisement broadcasting.
In the prior art, advertisement detecting mainly includes the modes such as advertiser's inspection, the inspection of outsourcing unit under line, artificial under line The prison broadcast mode of inspection needs to arrange monitoring personnel and place to be monitored is gone to supervise and shoot video ads, and will shooting Video, photo for arriving etc. are uploaded as advertisement detecting voucher, but these data are easily tampered, and it is difficult to ensure that upload data Authenticity；Furthermore it is possible to invite authority the third-party institution patrol and monitor, these mechanisms have third party's fairness and Authority, but to provide the time cycle that electronics prison casting is accused longer for the third-party institution, and monitoring cost is high.Based on the prior art, It needs to provide one kind and goes to intermediary, low cost is anti-tamper, and efficient multimedia messages prison broadcasts scheme.
Summary of the invention
This specification embodiment provides a kind of multimedia messages prison broadcasting method, apparatus and system based on block chain, with solution Data certainly of the existing technology are easily tampered, prison broadcast it is at high cost, the problem of low efficiency.
In order to solve the above technical problems, this specification embodiment is achieved in that
A kind of multimedia messages based on block chain that this specification embodiment provides supervise broadcasting method, set applied to terminal It is standby, which comprises
Acquire and obtain the prison multicast data of multimedia messages；
The first data summarization of the prison multicast data is calculated, and is signed to first data summarization；
The first data summarization after the signature is uploaded to service server, with by the service server to the label Name is verified, and after the signature verification passes through, first data summarization is stored in block chain；
The prison multicast data is sent to service server, so as to the service server calculate the prison multicast data the Two data summarizations verify second data summarization according to first data summarization；In second data summarization After being verified, generate the feature of the prison multicast data, and calculate the feature of reference data, by the feature of the prison multicast data with The feature of the reference data is matched, and realizes that prison is broadcast according to matching result.
In addition, in the method, the multimedia messages include video ads information, the terminal device is acquired and is obtained The prison multicast data for taking multimedia messages, specifically includes:
The terminal device by camera acquire video ads information in key frame or the terminal device pass through Camera acquires the video-frequency band in video ads information, and using the key frame or video-frequency band as prison multicast data.
In addition, in the method, the terminal device acquires the key frame in video ads information, packet by camera It includes:
Default one or more picture frame is as key frame；
The terminal device when being played out to video ads information, by camera to the video ads information into The detection of row key frame；
When detecting key frame in the video ads information, the key frame is extracted；Or
The terminal device acquires the video ads information when playing out to video ads information, through camera Complete played data；
Key frame detection is carried out for the complete played data；
When detecting key frame in the complete played data, the key frame is extracted.
In addition, in the method, the camera is wide-angle camera, the field of view angle FOV of the wide-angle camera For any angle between 120 degree~210 degree.
In addition, in the method, the feature for generating the prison multicast data, comprising: when the prison multicast data is to close When key frame, the SIFT feature of single-frame images corresponding to the key frame is calculated；It, will be described when the prison multicast data is video-frequency band Video-frequency band is divided into several single-frame images, calculates separately the SIFT feature of each single-frame images.
In addition, in the method, the reference data includes the normal play data of the video ads information, described The feature for calculating reference data matches the feature of the prison multicast data with the feature of the reference data, comprising:
The normal play data are divided into several single-frame images, distortion geometry is carried out to each single-frame images Transformation, obtains transformed fault image, calculates separately the SIFT feature of each fault image；
By the institute in the SIFT feature and the normal play data of all single-frame images corresponding to the prison multicast data There is the SIFT feature of fault image to be compared one by one.
In addition, in the method, further includes: preset a security module and the security module in the terminal device Private key signature interface stores private key corresponding with the terminal device in the security module.
In addition, in the method, first data summarization for calculating the prison multicast data, and to first data Abstract is signed, and is specifically included:
The first data summarization of the prison multicast data is calculated, and using the private key signature interface of the security module, to institute The first data summarization is stated to sign.
In addition, in the method, it is described to be verified by the service server to the signature, comprising: by institute The corresponding public key of private key of the service server based on the terminal device is stated to verify the signature.
In addition, in the method, it is described that second data summarization is verified according to first data summarization Before, further includes:
The service server is obtained by the address information of the SDK that block platform chain the services block chain returned, and The first data summarization is determined according to the address information.
A kind of multimedia messages based on block chain that this specification embodiment provides supervise broadcasting method, are applied to business service Device, which comprises
The first data summarization after the signature that receiving terminal apparatus uploads；
The signature is verified, and after the signature verification passes through, by first data summarization in block chain In stored；
The prison multicast data that receiving terminal apparatus is sent, and the second data summarization of the prison multicast data is calculated, according to described First data summarization verifies second data summarization；
After second data summarization is verified, the feature of the prison multicast data is generated, and calculates reference data Feature, the feature of the prison multicast data is matched with the feature of the reference data, realizes that prison is broadcast according to matching result；
Wherein, the first data summarization after the signature is the first data that the terminal device calculates the prison multicast data Abstract, and obtained after signing to first data summarization；The prison multicast data is that the terminal device is acquired and obtained The prison multicast data of the multimedia messages taken.
In addition, in the method, the feature for generating the prison multicast data, comprising: when the prison multicast data is to close When key frame, the SIFT feature of single-frame images corresponding to the key frame is calculated；It, will be described when the prison multicast data is video-frequency band Video-frequency band is divided into several single-frame images, calculates separately the SIFT feature of each single-frame images.
In addition, in the method, the reference data includes the normal play data of the video ads information, described The feature for calculating reference data matches the feature of the prison multicast data with the feature of the reference data, comprising:
The normal play data are divided into several single-frame images, distortion geometry is carried out to each single-frame images Transformation, obtains transformed fault image, calculates separately the SIFT feature of each fault image；
By the institute in the SIFT feature and the normal play data of all single-frame images corresponding to the prison multicast data There is the SIFT feature of fault image to be compared one by one.
In addition, in the method, it is described that the signature is verified, comprising: the service server is based on described The corresponding public key of the private key of terminal device verifies the signature.
In addition, in the method, it is described that second data summarization is verified according to first data summarization Before, further includes:
The service server is obtained by the address information of the SDK that block platform chain the services block chain returned, and The first data summarization is determined according to the address information.
A kind of multimedia messages based on block chain that this specification embodiment provides supervise broadcasting device, set applied to terminal Standby, described device includes:
Acquisition module, for acquiring and obtaining the prison multicast data of multimedia messages；
Computing module for calculating the first data summarization of the prison multicast data, and carries out first data summarization Signature；
Uploading module, for the first data summarization after the signature to be uploaded to service server, by the business Server verifies the signature, and after the signature verification passes through, by first data summarization in block chain It is stored；
Sending module, for the prison multicast data to be sent to service server, so that the service server calculates institute The second data summarization for stating prison multicast data, verifies second data summarization according to first data summarization；Institute It states after the second data summarization is verified, the feature of the prison multicast data is generated, and calculate the feature of the reference data, by institute The feature for stating prison multicast data is matched with the feature of the reference data, realizes that prison is broadcast according to matching result.
In addition, in said device, the multimedia messages include video ads information, the acquisition module is specifically used In: the key frame in video ads information is acquired by camera, or the view in video ads information is acquired by camera Frequency range, and using the key frame or video-frequency band as prison multicast data.
In addition, in said device, the acquisition module is further used for:
Default one or more picture frame is as key frame；
When playing out to video ads information, key frame inspection is carried out to the video ads information by camera It surveys；
When detecting key frame in the video ads information, the key frame is extracted；Or
When playing out to video ads information, the complete broadcasting number of the video ads information is acquired by camera According to；
Key frame detection is carried out for the complete played data；
When detecting key frame in the complete played data, the key frame is extracted.
In addition, in said device, the camera is wide-angle camera, the field of view angle FOV of the wide-angle camera For any angle between 120 degree~210 degree.
In addition, in said device, further includes: the private key signature interface of a default security module and the security module, Private key corresponding with the terminal device is stored in the security module.
In addition, in said device, the computing module is specifically used for: the first data for calculating the prison multicast data are plucked It wants, and using the private key signature interface of the security module, signs to first data summarization.
A kind of multimedia messages based on block chain that this specification embodiment provides supervise broadcasting device, are applied to business service Device, described device include:
First receiving module, for the first data summarization after the signature of receiving terminal apparatus upload；
Authentication module, for being verified to the signature, and after the signature verification passes through, by first data Abstract is stored in block chain；
Second receiving module for the prison multicast data that receiving terminal apparatus is sent, and calculates the second of the prison multicast data Data summarization verifies second data summarization according to first data summarization；
Matching module for after second data summarization is verified, generating the feature of the prison multicast data, and is counted The feature of the prison multicast data is matched with the feature of the reference data, is tied according to matching by the feature for calculating reference data Fruit is now supervised and is broadcast；
Wherein, the first data summarization after the signature is the first data that the terminal device calculates the prison multicast data Abstract, and obtained after signing to first data summarization；The prison multicast data is that the terminal device is acquired and obtained The prison multicast data of the multimedia messages taken.
In addition, in said device, the matching module is further used for: when the prison multicast data is key frame, meter Calculate the SIFT feature of single-frame images corresponding to the key frame；When the prison multicast data is video-frequency band, the video-frequency band is drawn It is divided into several single-frame images, calculates separately the SIFT feature of each single-frame images.
In addition, in said device, the reference data includes the normal play data of the video ads information, described Matching module is further used for:
The normal play data are divided into several single-frame images, distortion geometry is carried out to each single-frame images Transformation, obtains transformed fault image, calculates separately the SIFT feature of each fault image；
By the institute in the SIFT feature and the normal play data of all single-frame images corresponding to the prison multicast data There is the SIFT feature of fault image to be compared one by one.
A kind of multimedia messages prison based on block chain that this specification embodiment provides broadcasts system, and the system comprises ends End equipment and service server, in which:
The terminal device, for acquiring and obtaining the prison multicast data of multimedia messages；Calculate the of the prison multicast data One data summarization, and sign to first data summarization；The first data summarization after the signature is uploaded to business Server, and the prison multicast data is sent to service server；
The service server, for the first data summarization after the signature of receiving terminal apparatus upload；To the signature It is verified, and after the signature verification passes through, first data summarization and signature value is stored in block chain； The prison multicast data that receiving terminal apparatus is sent, and the second data summarization of the prison multicast data is calculated, according to first data Abstract verifies second data summarization；After second data summarization is verified, the prison multicast data is generated Feature, and calculate the feature of reference data, the feature of the prison multicast data matched with the feature of the reference data, Realize that prison is broadcast according to matching result.
This specification embodiment use at least one above-mentioned technical solution can reach it is following the utility model has the advantages that
By acquiring and obtain the prison multicast data of multimedia messages, the first data summarization of the prison multicast data is calculated, and It signs to first data summarization, the first data summarization after signature is distributed in block chain；Multicast data will be supervised again It is sent to service server, so that the service server calculates the second data summarization of the prison multicast data, by the first data Abstract and the second data summarization are verified, and after being verified, and generate the feature of the prison multicast data, and calculate reference number According to feature, by it is described prison multicast data feature matched with the feature of the reference data, according to matching result realize prison It broadcasts.Based on this programme, it can be realized and the automatic prison of multimedia messages is broadcast, be not necessarily to third party intermediary, reduce prison and broadcast cost, energy It is enough to guarantee that prison multicast data is not tampered, promote working efficiency.
Detailed description of the invention
In order to illustrate more clearly of this specification embodiment or technical solution in the prior art, below will to embodiment or Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only The some embodiments recorded in this specification, for those of ordinary skill in the art, in not making the creative labor property Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram for the system overall architecture that the scheme of this specification is related under practical application scene；
Fig. 2 is the process signal that a kind of multimedia messages based on block chain that this specification embodiment provides supervise broadcasting method Figure；
Fig. 3 is that the process that another multimedia messages based on block chain that this specification embodiment provides supervise broadcasting method is shown It is intended to；
Fig. 4 is the structural representation that a kind of multimedia messages based on block chain that this specification embodiment provides supervise broadcasting device Figure；
Fig. 5 is that the structure that another multimedia messages based on block chain that this specification embodiment provides supervise broadcasting device is shown It is intended to；
Fig. 6 is the structural representation that a kind of multimedia messages prison based on block chain that this specification embodiment provides broadcasts system Figure.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in this specification, below in conjunction with this explanation Attached drawing in book embodiment is clearly and completely described the technical solution in this specification embodiment, it is clear that described Embodiment be merely a part but not all of the embodiments of the present application.Based on this specification embodiment, this field Those of ordinary skill's every other embodiment obtained without creative efforts, all should belong to the application The range of protection.
Fig. 1 is a kind of schematic diagram for the system overall architecture that the scheme of this specification is related under practical application scene.System Overall architecture of uniting includes terminal device and cloud server, wherein terminal device can be used for the broadcasting of multimedia messages, cloud clothes Business device can be used for the storage to prison multicast data, calculating and storage of block chain etc..Terminal device may include such as electronics The electronic equipment that display screen, electronics speaker etc. are played for video or audio, is also possible to be mounted with the intelligence of intelligent operating system Energy equipment, such as: intelligent display screen, intelligent projection device, smart television etc. can be integrated with touch screen on the smart machine, The touch screen is, for example, liquid crystal touch control screen.
In this specification embodiment, multimedia messages include video ads information, audio advertisement information etc., the present embodiment It is that video ads are as multimedia messages using under line under scene, therefore alleged multimedia in this specification following embodiment Information refers both to video ads information under line, and terminal device at this time is video ads playback terminal under line, such as: advertisement is broadcast under line Put large-size screen monitors advertisement machine etc. under screen, line.
This specification embodiment uses block chain technology in the prison to video ads under line is broadcast, since block chain has solely The attributes such as special decentralization, information can not distort, multinode collective maintainability, publicity, secret protection, thus based on not It is able to record in believable internet and the data of believable Transaction Information is provided.The work that prison is broadcast is being carried out to video ads under line In the process, it is necessary first to the content for acquiring video ads broadcasting, using the content as on the data voucher compared with standard content It passes in server, however the acquisition of either data voucher or upper crossing, the data in terminal or server may all be usurped Change；And due to advertiser to media provider be completely it is mistrustful, upload data voucher authenticity also it is difficult to ensure that.
This specification embodiment is automatic by the video acquisition device (for example, camera, video recorder etc.) on terminal device Prison multicast data is obtained, the first data summarization of prison multicast data is calculated and carries out signature processing, by the first data summarization and signature value It is uploaded to block chain (also referred to as cochain), and prison multicast data is also uploaded to service server (such as cloud server), in cloud End the first data summarization and the second data summarization are verified, thus learn upload to service server prison multicast data whether For the prison multicast data that acquired original arrives, i.e. whether prison multicast data is tampered, so as to broadcast result completely credible for prison；Due to automatic collection Prison multicast data is obtained, and realizes automatic comparison beyond the clouds, therefore no third side personnel intervene, prison is reduced and broadcasts cost, significant increase Working efficiency.
Based on above-mentioned scene, the scheme of this specification is described in detail below.
Fig. 2 is the process signal that a kind of multimedia messages based on block chain that this specification embodiment provides supervise broadcasting method Figure, this method can specifically include following steps:
In step S210, the prison multicast data of multimedia messages is acquired and obtained.
In this specification one or more embodiment, multimedia messages include video ads information, terminal device acquisition And the prison multicast data of multimedia messages is obtained, can specifically include: terminal device is acquired in video ads information by camera Key frame or terminal device the video-frequency band in video ads information is acquired by camera, and by key frame or video-frequency band As prison multicast data.
Specifically, terminal device includes video ads playback terminal under line, and such as: advertisement plays large-size screen monitors under screen, line under line Advertisement machine etc..Terminal device acquires by acquisition device and obtains the prison multicast data of video ads under line, and acquisition device, which refers to, to be taken the photograph As head, video recorder etc. have the device of video or image camera function；It, can be according to video under different lines in practical application Advertisement terminal selects different acquisition devices, such as selects acquisition device according to the screen size of video ads terminal, works as video When advertisement terminal is intelligent large-screen display, in order to take the content of large-size screen monitors advertisement, while as far as possible with video playing screen Integrated design needs for camera to be mounted on the side (such as top) of video playing screen, and the bat of adjustable camera lens Direction is taken the photograph, so that can just take the complete content of screen broadcasting；The off screen curtain of camera meeting at this time is very close, to need Biggish field of view angle FOV, therefore can be using wide-angle camera as acquisition device, the field of view angle FOV of wide-angle camera Can be any angle between 120 degree~210 degree, it can use field of view angle FOV between 120 degree~210 degree arbitrarily The wide-angle camera of angle, such as: it uses field of view angle FOV for 120 degree of wide-angle camera, or uses field of view angle FOV For 210 degree of wide-angle camera.It is noted that the image or video that are taken using wide-angle camera are usually had very greatly Distortion, so-called distortion refers to that captured image can be deformed, causes dissimilar with shooting object originally.
Under another embodiment, when video ads terminal be normal size display when, select common camera as Acquisition device, at this time can front that is common camera is vertical or being obliquely installed on display.Implement in this specification In example, above-mentioned large-screen display can refer to that screen size is more than or equal to 27 cun of liquid crystal display, the then display of normal size Device can refer to the liquid crystal display less than 27 cun.Preferably, the resolution ratio of above-mentioned camera is 1080P, the shooting essence of 1080P Degree both ensure that the clarity of imaging, convenient for differentiating, and not will increase consumables cost.
In this specification one or more embodiment, terminal device acquires the pass in video ads information by camera Key frame may include following two mode:
Mode one:
Default one or more picture frame is as key frame；Terminal device leads to when playing out to video ads information It crosses camera and key frame detection is carried out to video ads information；When detecting key frame in video ads information, extracts and close Key frame.
Specifically, camera is constantly to video when the large-screen display of terminal device plays out video ads information Advertising information carries out the detection of key frame, when screen is played to the picture frame of video ads information corresponding to default key frame When, camera shoots currently playing image, and using the image as key frame.
Mode two:
Default one or more picture frame is as key frame；Terminal device leads to when playing out to video ads information Cross the complete played data of camera acquisition video ads information；Key frame detection is carried out for complete played data；When complete When detecting key frame in whole played data, key frame is extracted.
Specifically, camera shoots the video when large-screen display of terminal device plays out video ads information The complete played data of advertising information, terminal device are directed to the complete played data again and carry out key frame detection, play from complete The key frame is extracted in data.
In step S220, the first data summarization of the prison multicast data is calculated, and first data summarization is carried out Signature.
In this specification one or more embodiment, the private of a security module and security module is preset in terminal device Key signature interface stores private key corresponding with terminal device in security module.Specifically, security module can refer at the end The safe computing environment carried in end equipment stores private key corresponding with terminal device in safe computing environment.
For example, can be carried in the hardware environment of video advertising player so that terminal device is video advertising player under line as an example Safety chip, and based on the safety chip come Build Security computing environment, using the safe computing environment come storage and maintenance view The private key that frequency advertisement machine is held provides the computing environment of safety towards video advertising player.
In this specification one or more embodiment, the first data summarization of prison multicast data is calculated, and to the first data Abstract is signed, and may include following operation:
Above-mentioned data summarization, which specifically can be, calculates the cryptographic Hash that the prison multicast data obtains, institute based on specific hash algorithm The first cryptographic Hash can be expressed as by stating the first data summarization, i.e., by carrying out Hash operation to prison multicast data, obtain prison multicast data The first cryptographic Hash；It is based on private key corresponding with terminal device in safe computing environment, and utilizes the private key label of security module Name interface, carries out signature processing to calculated first cryptographic Hash；It should be pointed out that carrying out signature processing to the first cryptographic Hash As a result, can be to obtain the signature value of first cryptographic Hash, that is, may include first Hash in the first cryptographic Hash after signing The signature value of value.
The private key of security module is never appeared there are physics area of isolation, by being based on private key in safe computing environment It signs to the cryptographic Hash of prison multicast data, so as to ensure signature safety.And it is stored in the cryptographic Hash of prison multicast data After block chain, so that may not carry out distorting for prison multicast data Hash after cochain；Hash operation is using high security level SM3 algorithm etc., so that can not backstepping prison multicast data content by Hash.It should be noted that the Hash operation of prison multicast data, base The processing of the signature of cryptographic Hash and security module can be realized in the credible sensor in terminal device in private key. Block chain described in this specification can specifically include privately owned chain, shared chain and alliance's chain etc., such as: ant block chain BaaS etc., in the present specification without being particularly limited to.
In step S230, the first data summarization after the signature is uploaded to service server, by the business Server verifies the signature, and after the signature verification passes through, by first data summarization in block chain It is stored.
In this specification one or more embodiment, the mistake that the first data summarization after signature is distributed in block chain Journey specifically includes that the first cryptographic Hash (may include signature value) after signature is uploaded to service server after, by service server The corresponding public key of private key based on terminal device verifies signature, and after signature verification passes through, the first cryptographic Hash is existed It is stored in block chain.
In one embodiment, private key and public key that terminal device is held, can be raw in equipment by equipment manufacturer The production stage is terminal device generation, and the private key is written in the safe computing environment of the terminal device in advance by equipment manufacturer Carry out storage and maintenance.
Further, after the first cryptographic Hash and its signature value are successfully distributed to block chain, due to carrying out cochain When have invoked the SDK (for example, Software Development Kit) of block platform chain service, therefore after calling successfully, block platform chain The SDK of service will return to the address information txHash of the block chain.
In step S240, the prison multicast data is sent to service server, so that the service server calculates institute The second data summarization for stating prison multicast data, verifies second data summarization according to first data summarization；Institute It states after the second data summarization is verified, the feature of the prison multicast data is generated, and calculate the feature of reference data, by the prison The feature of multicast data is matched with the feature of the reference data, realizes that prison is broadcast according to matching result.
In this specification one or more embodiment, prison multicast data is sent to the behaviour of service server by terminal device Make, either directly transmitting after getting prison multicast data, is also possible to terminal device for the first data summarization and signature value It is sent when being distributed to block chain, can also be and be copied in service server when terminal device is offline.This specification is implemented Step S210- step S240 in example does not constitute the restriction to this specification embodiment realization sequence.
According to previous embodiment, data summarization, which specifically can be, to be calculated the prison multicast data based on specific hash algorithm and obtains Cryptographic Hash, therefore the second data summarization can be expressed as the second cryptographic Hash；Then service server calculates the second of prison multicast data Cryptographic Hash verifies the second cryptographic Hash according to the first cryptographic Hash.
Further, service server needs first to obtain before verifying the second cryptographic Hash according to the first cryptographic Hash The first cryptographic Hash being stored on block chain, according to previous embodiment, after the first cryptographic Hash and signature value success cochain, block The SDK of platform chain service will return to the address information of the block chain, and service server obtains the address letter of the block chain at this time Breath, and the first cryptographic Hash is determined according to address information.Again by the way that the first cryptographic Hash and the second cryptographic Hash to be compared, verifying is breathed out Whether uncommon value is identical.
It in the above-described embodiments, is by the way that by the first cryptographic Hash on block chain, (prison collected to terminal device broadcasts number Obtained according to Hash operation is carried out) the second cryptographic Hash for being calculated with the prison multicast data uploaded on service server it Between the comparison that carries out；But in practical application, the comparison being not limited between above-mentioned first cryptographic Hash and the second cryptographic Hash, example Such as:, can also be by the attached of the first cryptographic Hash and the prison multicast data after the first cryptographic Hash is calculated to prison multicast data in terminal device Belong to information and form new data structure, calculates the cryptographic Hash of the data structure, obtain third cryptographic Hash；Third cryptographic Hash is carried out Signature processing, and third cryptographic Hash and its signature value are uploaded into the storage of block chain.Opposite, business is uploaded to multicast data will be supervised After server, service server calculates the second cryptographic Hash of prison multicast data, then by second cryptographic Hash and uploads prison multicast data Satellite information forms new data structure, calculates the cryptographic Hash of the data structure, obtains the 4th cryptographic Hash；By by third Hash Value is compared with the 4th cryptographic Hash, equally may be implemented to the legitimate verification for uploading prison multicast data.Above-mentioned prison multicast data Satellite information may include supervising temporal information and location information of multicast data etc..
In this specification one or more embodiment, reference data may include the normal play number of video ads information According to, it can it is considered that advertiser is supplied to the original reference data of media provider, reference data is from operation system, reference number According to can be pre-configured in service server.Prison multicast data and reference data are stored by service server, is greatly facilitated Advertiser, which transfers, to be checked.
In this specification one or more embodiment, the feature of prison multicast data is generated, may include:
When supervising multicast data is key frame, the SIFT feature of single-frame images corresponding to key frame is calculated；
When supervising multicast data is video-frequency band, video-frequency band is divided into several single-frame images, calculates separately each single frames figure The SIFT feature of picture.
Specifically, single-frame images corresponding to key frame refers to that the corresponding picture frame of the key frame, the i.e. picture frame are corresponding Single width image frame；SIFT, that is, Scale invariant features transform, SIFT are a kind of algorithms of computer vision, it be used to detect with Locality characteristic in image is described, it finds extreme point in space scale, and extracts its position, scale, invariable rotary Amount.
In a particular embodiment, the SIFT feature of image can be detected using following steps: a, scale space Extremum extracting, b, positioning feature point, c, characteristic direction assignment, d, feature point description.
In this specification one or more embodiment, the feature of reference data is calculated, the feature and ginseng of multicast data will be supervised The feature for examining data is matched, comprising:
Normal play data are divided into several single-frame images, distortion geometric transformation is carried out to each single-frame images, is obtained To transformed fault image, the SIFT feature of each fault image is calculated separately；
By all distortion figures in the SIFT feature and normal play data of supervising all single-frame images corresponding to multicast data The SIFT feature of picture is compared one by one.
Specifically, according to above-described embodiment, since the image or video taken using wide-angle camera is with very big It is the processing done based on fault image when distorting, therefore calculating its SIFT feature to the single-frame images of prison multicast data；And it uploads to Normal play data in service server are normal images, therefore for the reliability of feature comparison result, first will be needed Normal play data are divided into several single-frame images, carry out distortion geometric transformation to each single-frame images, obtain transformed Fault image calculates separately the SIFT feature of each fault image.Geometric transformation is also known as spatial alternation, and being will be in piece image Coordinate position be mapped to the new coordinate position in other piece image, it does not change the pixel value of image, only flat in image Rearranging for pixel is carried out on face.Distortion geometric transformation is carried out to single-frame images, it is believed that be abnormal to piece image progress The geometric transformation of change, what is obtained after transformation is fault image.
In this specification one or more embodiment, lead to not asking for comparison in order to avoid there is broadcast leakage or scarce frame Topic, can be by all fault images in the SIFT feature and normal play data of supervising all single-frame images corresponding to multicast data SIFT feature compared one by one, until be matched to the consistent image of SIFT feature.When prison multicast data is single or multiple passes When key frame, picture frame corresponding with the key frame can also be extracted directly from normal play data, to the figure extracted As frame carries out distortion geometric transformation, fault image is obtained, to only compare the SIFT feature of these images.
It, can be using the key point for 128 dimensions for calculating two groups of characteristic points in this specification one or more embodiment Euclidean distance is realized to the matching between the SIFT feature of single-frame images and the SIFT feature of fault image.Euclidean distance is smaller, Then similarity is higher, when Euclidean distance is less than the threshold value of setting, it is possible to determine that is successful match.After the completion of characteristic matching, Report can also be generated according to matching result, report stores beyond the clouds, checks reference convenient for advertiser.
Above content mainly describes operation of this specification embodiment applied to terminal equipment side when, and this specification is implemented Operation when example is also to service server as main body is described.Referring to Fig. 3, the figure shows this specification embodiments to mention The flow diagram of another multimedia messages prison broadcasting method based on block chain of confession, this method can specifically include following step It is rapid:
In step s310, the first data summarization and signature value after the signature that receiving terminal apparatus uploads.
In this specification one or more embodiment, the first data summarization after signature is that terminal device calculating prison broadcasts number According to the first data summarization, and obtain after signing to first data summarization.Since data summarization specifically can be The cryptographic Hash that the prison multicast data obtains is calculated based on specific hash algorithm, so the first data summarization can be expressed as the first Kazakhstan Uncommon value.
In step s 320, the signature is verified, and after the signature verification passes through, by first data Abstract and signature value are stored in block chain.
In this specification one or more embodiment, service server is receiving the first cryptographic Hash (may include signature value) Afterwards, the corresponding public key of private key based on terminal device verifies signature, and after signature verification passes through, by the first cryptographic Hash It is stored in block chain with signature value.
In step S330, the prison multicast data that receiving terminal apparatus is sent, and calculate the second data of the prison multicast data Abstract, verifies second data summarization according to first data summarization.
In this specification one or more embodiment, prison multicast data is the multimedia messages that terminal device is acquired and obtained Prison multicast data, the Hash that the prison multicast data obtains is calculated based on specific hash algorithm since data summarization specifically can be Value, so the second data summarization can be expressed as the second cryptographic Hash.The second cryptographic Hash is carried out according to the first cryptographic Hash to verify it Before, it can also include: that service server is obtained by the address information of the SDK that block platform chain the services block chain returned, And the first cryptographic Hash is determined according to address information.
In step S340, after second data summarization is verified, the feature of the prison multicast data is generated, and count The feature of the prison multicast data is matched with the feature of the reference data, is tied according to matching by the feature for calculating reference data Fruit is now supervised and is broadcast.
In this specification one or more embodiment, the feature of prison multicast data is generated, comprising:
When supervising multicast data is key frame, the SIFT feature of single-frame images corresponding to key frame is calculated；
When supervising multicast data is video-frequency band, video-frequency band is divided into several single-frame images, calculates separately each single frames figure The SIFT feature of picture.
Specifically, single-frame images corresponding to key frame refers to that the corresponding picture frame of the key frame, the i.e. picture frame are corresponding Single width image frame；SIFT, that is, Scale invariant features transform, SIFT are a kind of algorithms of computer vision, it be used to detect with Locality characteristic in image is described, it finds extreme point in space scale, and extracts its position, scale, invariable rotary Amount.
In a particular embodiment, the SIFT feature of image can be detected using following steps: a, scale space Extremum extracting, b, positioning feature point, c, characteristic direction assignment, d, feature point description.
In this specification one or more embodiment, the feature of reference data is calculated, the feature and ginseng of multicast data will be supervised The feature for examining data is matched, comprising:
Normal play data are divided into several single-frame images, distortion geometric transformation is carried out to each single-frame images, is obtained To transformed fault image, the SIFT feature of each fault image is calculated separately；
By all distortion figures in the SIFT feature and normal play data of supervising all single-frame images corresponding to multicast data The SIFT feature of picture is compared one by one.
Specifically, according to above-described embodiment, since the image or video taken using wide-angle camera is with very big It is the processing done based on fault image when distorting, therefore calculating its SIFT feature to the single-frame images of prison multicast data；And business takes The received normal play data of device of being engaged in are normal images, therefore for the reliability of feature comparison result, are needed standard first Played data is divided into several single-frame images, carries out distortion geometric transformation to each single-frame images, obtains transformed distortion Image calculates separately the SIFT feature of each fault image.Geometric transformation is also known as spatial alternation, is by the seat in piece image Cursor position is mapped to the new coordinate position in other piece image, it does not change the pixel value of image, only on the image plane Carry out rearranging for pixel.Distortion geometric transformation is carried out to single-frame images, it is believed that distorted to piece image Geometric transformation, what is obtained after transformation is fault image.
In this specification one or more embodiment, lead to not asking for comparison in order to avoid there is broadcast leakage or scarce frame Topic, can be by all fault images in the SIFT feature and normal play data of supervising all single-frame images corresponding to multicast data SIFT feature compared one by one, until be matched to the consistent image of SIFT feature.When prison multicast data is single or multiple passes When key frame, picture frame corresponding with the key frame can also be extracted directly from normal play data, to the figure extracted As frame carries out distortion geometric transformation, fault image is obtained, to only compare the SIFT feature of these images.
It, can be using the key point for 128 dimensions for calculating two groups of characteristic points in this specification one or more embodiment Euclidean distance is realized to the matching between the SIFT feature of single-frame images and the SIFT feature of fault image.Euclidean distance is smaller, Then similarity is higher, when Euclidean distance is less than the threshold value of setting, it is possible to determine that is successful match.After the completion of characteristic matching, Report can also be generated according to matching result, report stores beyond the clouds, checks reference convenient for advertiser.
In the present embodiment, acquire and obtain prison multicast data, calculate the first cryptographic Hash of prison multicast data, to the first cryptographic Hash into The processing of row signature, and first cryptographic Hash cochain etc. is operated, the side recorded with step S210- step S230 in previous embodiment Method process is identical, and details are not described herein.
Based on same thinking, this specification embodiment additionally provide it is a kind of based on block chain multimedia messages prison broadcast dress It sets, if Fig. 4 is that a kind of multimedia messages based on block chain that this specification embodiment provides supervise broadcasting device, is set applied to terminal Standby, which specifically includes that
Acquisition module 401, for acquiring and obtaining the prison multicast data of multimedia messages；
Computing module 402, for calculate it is described prison multicast data the first data summarization, and to first data summarization into Row signature；
Uploading module 403, for the first data summarization after the signature to be uploaded to service server, by the industry Business server verifies the signature, and after the signature verification passes through, by first data summarization in block chain In stored；
Sending module 404, for the prison multicast data to be sent to service server, so as to service server calculating Second data summarization of the prison multicast data, verifies second data summarization according to first data summarization；? After second data summarization is verified, the feature of the prison multicast data is generated, and calculates the feature of the reference data, it will The feature of the prison multicast data is matched with the feature of the reference data, realizes that prison is broadcast according to matching result.
According to an embodiment of the present application, the multimedia messages include video ads information, and the acquisition module 401 is specific For: the key frame in video ads information is acquired by camera, or is acquired in video ads information by camera Video-frequency band, and using the key frame or video-frequency band as prison multicast data.
According to an embodiment of the present application, in said device, the acquisition module 401 is further used for:
Default one or more picture frame is as key frame；
When playing out to video ads information, key frame inspection is carried out to the video ads information by camera It surveys；
When detecting key frame in the video ads information, the key frame is extracted；Or
When playing out to video ads information, the complete broadcasting number of the video ads information is acquired by camera According to；
Key frame detection is carried out for the complete played data；
When detecting key frame in the complete played data, the key frame is extracted.
According to an embodiment of the present application, in said device, the camera is wide-angle camera, the wide-angle camera Field of view angle FOV be 120 degree~210 degree between any angle.
According to an embodiment of the present application, further includes: the private key signature interface of a default security module and the security module, Private key corresponding with the terminal device is stored in the security module.
According to an embodiment of the present application, in said device, the computing module 402 is specifically used for: calculating the prison and broadcasts First data summarization of data, and using the private key signature interface of the security module, first data summarization is signed Name.
Referring to Fig. 5, broadcasting device is supervised for another multimedia messages based on block chain that this specification embodiment provides, is answered For service server, which is specifically included that
First receiving module 501, for the first data summarization and signature value after the signature of receiving terminal apparatus upload；
Authentication module 502, for being verified to the signature, and after the signature verification passes through, by described first Data summarization is stored in block chain；
Second receiving module 503 for the prison multicast data that receiving terminal apparatus is sent, and calculates the of the prison multicast data Two data summarizations verify second data summarization according to first data summarization；
Matching module 504, for after second data summarization is verified, generating the feature of the prison multicast data, And calculate the feature of reference data, by it is described prison multicast data feature matched with the feature of the reference data, according to Realize that prison is broadcast with result；
Wherein, the first data summarization after the signature is the first data that the terminal device calculates the prison multicast data Abstract, and obtained after signing to first data summarization；The prison multicast data is that the terminal device is acquired and obtained The prison multicast data of the multimedia messages taken.
According to an embodiment of the present application, in said device, the matching module 504 is further used for: when the prison is broadcast When data are key frame, the SIFT feature of single-frame images corresponding to the key frame is calculated；When the prison multicast data is video-frequency band When, the video-frequency band is divided into several single-frame images, calculates separately the SIFT feature of each single-frame images.
According to an embodiment of the present application, the reference data includes the normal play data of the video ads information, institute Matching module 504 is stated to be further used for:
The normal play data are divided into several single-frame images, distortion geometry is carried out to each single-frame images Transformation, obtains transformed fault image, calculates separately the SIFT feature of each fault image；
By the institute in the SIFT feature and the normal play data of all single-frame images corresponding to the prison multicast data There is the SIFT feature of fault image to be compared one by one.
Based on same thinking, this specification embodiment additionally provides a kind of multimedia messages prison based on block chain and broadcasts and be System, if Fig. 6 is that a kind of multimedia messages prison based on block chain that this specification embodiment provides broadcasts system, the system 600 is main It to include terminal device 601 and service server 602, in which:
The terminal device 601, for acquiring and obtaining the prison multicast data of multimedia messages；Calculate the prison multicast data First data summarization, and sign to first data summarization；The first data summarization after the signature is uploaded to industry Business server, and the prison multicast data is sent to service server.
The service server 602, for the first data summarization after the signature of receiving terminal apparatus upload；To the label Name is verified, and after the signature verification passes through, first data summarization and signature value are deposited in block chain Storage；The prison multicast data that receiving terminal apparatus is sent, and the second data summarization of the prison multicast data is calculated, according to first number Second data summarization is verified according to abstract；After second data summarization is verified, generates the prison and broadcast number According to feature, and calculate the feature of reference data, the feature of the feature of the prison multicast data and the reference data carried out Match, realizes that prison is broadcast according to matching result.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can With or may be advantageous.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device, For electronic equipment, nonvolatile computer storage media embodiment, since it is substantially similar to the method embodiment, so description It is fairly simple, the relevent part can refer to the partial explaination of embodiments of method.
Device that this specification embodiment provides, electronic equipment, nonvolatile computer storage media with method are corresponding , therefore, device, electronic equipment, nonvolatile computer storage media also have the Advantageous effect similar with corresponding method Fruit, since the advantageous effects of method being described in detail above, which is not described herein again corresponding intrument, The advantageous effects of electronic equipment, nonvolatile computer storage media.
This specification is referring to the method, equipment (system) and computer program product according to this specification embodiment Flowchart and/or the block diagram describes.It should be understood that can be realized by computer program instructions every in flowchart and/or the block diagram The combination of process and/or box in one process and/or box and flowchart and/or the block diagram.It can provide these computers Processor of the program instruction to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices To generate a machine, so that generating use by the instruction that computer or the processor of other programmable data processing devices execute In the dress for realizing the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram It sets.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/or The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data. The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM), Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates Machine readable medium does not include non-temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want Element.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that including described There is also other identical elements in the process, method of element, commodity or equipment.
This specification can describe in the general context of computer-executable instructions executed by a computer, such as journey Sequence module.Generally, program module include routines performing specific tasks or implementing specific abstract data types, programs, objects, Component, data structure etc..Specification can also be practiced in a distributed computing environment, in these distributed computing environments, By executing task by the connected remote processing devices of communication network.In a distributed computing environment, program module can To be located in the local and remote computer storage media including storage equipment.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method Part explanation.
The foregoing is merely this specification embodiments, are not intended to limit this application.For those skilled in the art For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal Replacement, improvement etc., should be included within the scope of the claims of this application.

Claims (25)

1. a kind of multimedia messages based on block chain supervise broadcasting method, it is applied to terminal device, which is characterized in that the method packet It includes:
Acquire and obtain the prison multicast data of multimedia messages；
The first data summarization of the prison multicast data is calculated, and is signed to first data summarization；
The first data summarization after the signature is uploaded to service server, with by the service server to it is described sign into Row verifying, and after the signature verification passes through, first data summarization is stored in block chain；
The prison multicast data is sent to service server, so that the service server calculates the second number of the prison multicast data According to abstract, second data summarization is verified according to first data summarization；It is verified in second data summarization By rear, generate the feature of the prison multicast data, and calculate the feature of reference data, by the feature of the prison multicast data with it is described The feature of reference data is matched, and realizes that prison is broadcast according to matching result.
2. the method as described in claim 1, which is characterized in that the multimedia messages include video ads information, the end End equipment acquires and obtains the prison multicast data of multimedia messages, specifically includes:
The terminal device by camera acquire video ads information in key frame or the terminal device pass through camera shooting Video-frequency band in head acquisition video ads information, and using the key frame or video-frequency band as prison multicast data.
3. method according to claim 2, which is characterized in that the terminal device acquires video ads information by camera In key frame, comprising:
Default one or more picture frame is as key frame；
The terminal device closes the video ads information when playing out to video ads information, through camera The detection of key frame；
When detecting key frame in the video ads information, the key frame is extracted；Or
The terminal device acquires the complete of the video ads information when playing out to video ads information, through camera Whole played data；
Key frame detection is carried out for the complete played data；
When detecting key frame in the complete played data, the key frame is extracted.
4. method according to claim 2, which is characterized in that the camera is wide-angle camera, the wide-angle camera Field of view angle FOV be 120 degree~210 degree between any angle.
5. method according to claim 2, which is characterized in that the feature for generating the prison multicast data, comprising:
When the prison multicast data is key frame, the SIFT feature of single-frame images corresponding to the key frame is calculated；
When the prison multicast data is video-frequency band, the video-frequency band is divided into several single-frame images, calculates separately each institute State the SIFT feature of single-frame images.
6. method as claimed in claim 5, which is characterized in that the reference data includes the standard of the video ads information Played data, the feature for calculating reference data carry out the feature of the feature of the prison multicast data and the reference data Matching, comprising:
The normal play data are divided into several single-frame images, distortion geometry is carried out to each single-frame images and is become It changes, obtains transformed fault image, calculate separately the SIFT feature of each fault image；
By it is described prison multicast data corresponding to all single-frame images SIFT feature with it is all abnormal in the normal play data The SIFT feature for becoming image is compared one by one.
7. the method as described in claim 1, which is characterized in that further include: in the terminal device preset a security module and The private key signature interface of the security module stores private key corresponding with the terminal device in the security module.
8. the method for claim 7, which is characterized in that first data summarization for calculating the prison multicast data, and It signs, specifically includes to first data summarization:
The first data summarization of the prison multicast data is calculated, and using the private key signature interface of the security module, to described the One data summarization is signed.
9. the method for claim 7, which is characterized in that described to be tested by the service server the signature Card, comprising: the corresponding public key of private key by the service server based on the terminal device verifies the signature.
10. the method as described in claim 1, which is characterized in that described to be counted according to first data summarization to described second Before being verified according to abstract, further includes:
The service server is obtained by the address information of the SDK that block platform chain the services block chain returned, and according to The address information determines the first data summarization.
11. a kind of multimedia messages based on block chain supervise broadcasting method, it is applied to service server, which is characterized in that the side Method includes:
The first data summarization after the signature that receiving terminal apparatus uploads；
The signature is verified, and after the signature verification passes through, by first data summarization in block chain into Row storage；
The prison multicast data that receiving terminal apparatus is sent, and the second data summarization of the prison multicast data is calculated, according to described first Data summarization verifies second data summarization；
After second data summarization is verified, the feature of the prison multicast data is generated, and calculates the feature of reference data, The feature of the prison multicast data is matched with the feature of the reference data, realizes that prison is broadcast according to matching result；
Wherein, the first data that the first data summarization after the signature calculates the prison multicast data for the terminal device are plucked It wants, and obtained after signing to first data summarization；The prison multicast data is that the terminal device is acquired and obtained Multimedia messages prison multicast data.
12. method as claimed in claim 11, which is characterized in that the feature for generating the prison multicast data, comprising:
When the prison multicast data is key frame, the SIFT feature of single-frame images corresponding to the key frame is calculated；
When the prison multicast data is video-frequency band, the video-frequency band is divided into several single-frame images, calculates separately each institute State the SIFT feature of single-frame images.
13. method as claimed in claim 12, which is characterized in that the reference data includes the mark of the video ads information Quasi- played data, it is described calculate reference data feature, by it is described prison multicast data feature and the reference data feature into Row matching, comprising:
The normal play data are divided into several single-frame images, distortion geometry is carried out to each single-frame images and is become It changes, obtains transformed fault image, calculate separately the SIFT feature of each fault image；
By it is described prison multicast data corresponding to all single-frame images SIFT feature with it is all abnormal in the normal play data The SIFT feature for becoming image is compared one by one.
14. method as claimed in claim 11, which is characterized in that described to be verified to the signature, comprising: the business The corresponding public key of private key of the server based on the terminal device verifies the signature.
15. method as claimed in claim 11, which is characterized in that described to be counted according to first data summarization to described second Before being verified according to abstract, further includes:
The service server is obtained by the address information of the SDK that block platform chain the services block chain returned, and according to The address information determines the first data summarization.
16. a kind of multimedia messages based on block chain supervise broadcasting device, it is applied to terminal device, which is characterized in that described device Include:
Acquisition module, for acquiring and obtaining the prison multicast data of multimedia messages；
Computing module for calculating the first data summarization of the prison multicast data, and signs to first data summarization；
Uploading module, for the first data summarization after the signature to be uploaded to service server, by the business service Device verifies the signature, and after the signature verification passes through, and first data summarization is carried out in block chain Storage；
Sending module, for the prison multicast data to be sent to service server, so that the service server calculates the prison Second data summarization of multicast data verifies second data summarization according to first data summarization；Described After two data summarizations are verified, the feature of the prison multicast data is generated, and calculates the feature of the reference data, by the prison The feature of multicast data is matched with the feature of the reference data, realizes that prison is broadcast according to matching result.
17. device as claimed in claim 16, which is characterized in that the multimedia messages include video ads information, described Acquisition module is specifically used for:
The key frame in video ads information is acquired by camera, or the view in video ads information is acquired by camera Frequency range, and using the key frame or video-frequency band as prison multicast data.
18. device as claimed in claim 17, which is characterized in that the acquisition module is further used for:
Default one or more picture frame is as key frame；
When playing out to video ads information, key frame detection is carried out to the video ads information by camera；
When detecting key frame in the video ads information, the key frame is extracted；Or
When playing out to video ads information, the complete played data of the video ads information is acquired by camera；
Key frame detection is carried out for the complete played data；
When detecting key frame in the complete played data, the key frame is extracted.
19. device as claimed in claim 17, which is characterized in that the camera is wide-angle camera, the wide-angle imaging The field of view angle FOV of head is any angle between 120 degree~210 degree.
20. device as claimed in claim 16, which is characterized in that further include: a default security module and the security module Private key signature interface, store private key corresponding with the terminal device in the security module.
21. device as claimed in claim 16, which is characterized in that the computing module is specifically used for:
The first data summarization of the prison multicast data is calculated, and using the private key signature interface of the security module, to described the One data summarization is signed.
22. a kind of multimedia messages based on block chain supervise broadcasting device, it is applied to service server, which is characterized in that the dress It sets and includes:
First receiving module, for the first data summarization after the signature of receiving terminal apparatus upload；
Authentication module, for being verified to the signature, and after the signature verification passes through, by first data summarization It is stored in block chain；
Second receiving module for the prison multicast data that receiving terminal apparatus is sent, and calculates the second data of the prison multicast data Abstract, verifies second data summarization according to first data summarization；
Matching module for after second data summarization is verified, generating the feature of the prison multicast data, and calculates ginseng The feature for examining data matches the feature of the prison multicast data with the feature of the reference data, according to matching result reality Now prison is broadcast；
Wherein, the first data that the first data summarization after the signature calculates the prison multicast data for the terminal device are plucked It wants, and obtained after signing to first data summarization；The prison multicast data is that the terminal device is acquired and obtained Multimedia messages prison multicast data.
23. device as claimed in claim 22, which is characterized in that the matching module is further used for:
When the prison multicast data is key frame, the SIFT feature of single-frame images corresponding to the key frame is calculated；
When the prison multicast data is video-frequency band, the video-frequency band is divided into several single-frame images, calculates separately each institute State the SIFT feature of single-frame images.
24. device as claimed in claim 23, which is characterized in that the reference data includes the mark of the video ads information Quasi- played data, the matching module are further used for:
The normal play data are divided into several single-frame images, distortion geometry is carried out to each single-frame images and is become It changes, obtains transformed fault image, calculate separately the SIFT feature of each fault image；
By it is described prison multicast data corresponding to all single-frame images SIFT feature with it is all abnormal in the normal play data The SIFT feature for becoming image is compared one by one.
25. a kind of multimedia messages prison based on block chain broadcasts system, which is characterized in that the system comprises terminal devices and industry Business server, in which:
The terminal device, for acquiring and obtaining the prison multicast data of multimedia messages；Calculate the first number of the prison multicast data It signs according to abstract, and to first data summarization；The first data summarization after the signature is uploaded to business service Device, and the prison multicast data is sent to service server；
The service server, for the first data summarization after the signature of receiving terminal apparatus upload；The signature is carried out Verifying, and after the signature verification passes through, first data summarization is stored in block chain；Receiving terminal apparatus The prison multicast data of transmission, and the second data summarization of the prison multicast data is calculated, according to first data summarization to described the Two data summarizations are verified；After second data summarization is verified, the feature of the prison multicast data is generated, and is calculated The feature of reference data matches the feature of the prison multicast data with the feature of the reference data, according to matching result Realize that prison is broadcast.
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