CN110474773A - Electronic Signature generation and verification method and electronic device with digital watermarking - Google Patents

Electronic Signature generation and verification method and electronic device with digital watermarking Download PDF

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Publication number
CN110474773A
CN110474773A CN201810812416.1A CN201810812416A CN110474773A CN 110474773 A CN110474773 A CN 110474773A CN 201810812416 A CN201810812416 A CN 201810812416A CN 110474773 A CN110474773 A CN 110474773A
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CN
China
Prior art keywords
image
processing unit
video
digital watermarking
signature
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Granted
Application number
CN201810812416.1A
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Chinese (zh)
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CN110474773B (en
Inventor
吴右任
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Thinkcloud Digital Technology Co ltd
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Thinkcloud Digital Technology Co ltd
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Publication of CN110474773A publication Critical patent/CN110474773A/en
Application granted granted Critical
Publication of CN110474773B publication Critical patent/CN110474773B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • H04L9/0863—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving passwords or one-time passwords
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • H04L9/0866—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3226—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using a predetermined code, e.g. password, passphrase or PIN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3297—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving time stamps, e.g. generation of time stamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8358—Generation of protective data, e.g. certificates involving watermark
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/608—Watermarking

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)

Abstract

A kind of Electronic Signature production method with digital watermarking, it is executed by electronic device, during the shooting for generating video, stamped signature message abstract is obtained according to the file data and mathematical function for being relevant to file, and each image received after obtaining the stamped signature message abstract for the video, signature track data is generated according to the track message of all signature tracks for being relevant to signatory received before the receiving time for receiving the image, and the signature track data is added into the image, and when obtaining stamped signature message abstract, digital watermarking including stamped signature message abstract is added in the video electronic device, to generate the Electronic Signature for including the video.In addition, the present invention also provides a kind of Electronic Signature verification method and electronic devices.

Description

Electronic Signature generation and verification method and electronic device with digital watermarking
Technical field
Look into that data are legal the present invention relates to one kind, the method for verifying or stamped signature has digital watermarking more particularly to one kind Electronic Signature generate and verification method and electronic device.
Background technique
In order to improve the inconvenience that conditional electronic stamped signature needs applying for electronic voucher, and the general people of habit entity signature Crowd does not trust sense in key messy code for electronic certificate, and having for TaiWan, China patent No. I 493380 is anti-fraud functional Electronic signature method confirms aforementioned stamped signature actually from expected label to combine the stamped signature of action of writing image and handwriting tracks Administration person, and then in easy method, achieve the purpose that authenticating identity, and improve Reliability.
However, in the stamped signature of system authentication combination action of writing image and handwriting tracks, not due to each stamped signature difference Greatly, so that the person who is ambitious or tenacious of purpose of the stamped signature with user's action of writing image and handwriting tracks, uses this dynamic image and signer When different file datas, the signature content that system cannot be distinguished from file data is same text document for handwritten signature track Expection signatory or other part of file expection signatory.
Summary of the invention
The purpose of the present invention is to provide a kind of sources and signature that can prove that signatory is the signature content of file data The content only Electronic Signature production method with digital watermarking related with the file data.
Electronic Signature production method with digital watermarking of the invention, is implemented, the processing unit by processing unit It is electrically connected shooting unit and input unit, the shooting unit is used to shoot during shooting in the signature of data that signs documents Person, to generate the video for including multiple image, the file data is relevant to file, and it is single to the processing to transmit the video Member, the input unit are used to generate and transmit during the shooting signature track that more are relevant to the signatory Track message to the processing unit, the Electronic Signature production method with digital watermarking include step (A), step (B), Step (C) and step (D).
In the step (A), the processing unit is during the shooting, according to the file data and mathematics letter Number obtains the stamped signature message abstract for being relevant to the file data.
In the step (B), the processing unit is obtaining the label during shooting, for the video Received each image after chapter message abstract receives after receiving the image according to the image for receiving the image certainly Received all track messages generate signature track data before time, and the signature track data is added to the image In.
In the step (C), the processing unit is made a summary during the shooting when obtaining the stamped signature message When, the digital watermarking including stamped signature message abstract is added in the video.
In the step (D), the processing unit generation includes the processing through the step (B) and the step (C) The video Electronic Signature, and the file data is added in the Electronic Signature.
Preferably, the Electronic Signature production method with digital watermarking of the invention, in step (A), also according to current Time, the file data reference number of a document, be relevant to the device identification and phase of the electronic device including the processing unit At least one of them of Internet protocol address about the electronic device obtains the stamped signature message abstract, in step (D) In, the Electronic Signature further include this at least one.
Preferably, the Electronic Signature production method with digital watermarking of the invention, the processing unit is also electrically connected connection Believe unit, the communication unit connects time stamp server via communication network, will via the communication unit in step (A) The file data is sent to the time stamp server, so that the time stamp server is according to current time, the number of files According to and the mathematical function, generate and simultaneously transmit the stamped signature message via the communication unit and make a summary to the processing unit, into And the processing unit is made to obtain the stamped signature message abstract, in step (D), when the Electronic Signature further includes described current Between.
Preferably, the Electronic Signature production method with digital watermarking of the invention, the processing unit is also electrically connected connection Believe that unit, the communication unit connect time stamp server via communication network, step (A) includes following sub-step:
(A-1) during the shooting, the text is relevant to according to the file data and mathematical function acquisition The file message of number of packages evidence is made a summary；And
(A-2) file message abstract is sent to the time stamp server via the communication unit, so that institute Time stamp server is stated according to the current time, file message abstract and the mathematical function, is generated and via described logical Letter unit transmits the stamped signature message and makes a summary to the processing unit, and then so that the processing unit is obtained the stamped signature message and pluck It wants；
In step (D), the Electronic Signature further includes the current time.
Preferably, the Electronic Signature production method with digital watermarking of the invention, in step (A), the mathematics letter Number is hash function.
Preferably, the Electronic Signature production method with digital watermarking of the invention, in step (C), for the view Frequency each image received after obtaining the stamped signature message abstract, after receiving the image, the processing unit is It will be seen that and text including the stamped signature message abstract image is added as the digital watermarking, by the digital water Print is added into the video.
Preferably, the Electronic Signature production method with digital watermarking of the invention, in step (C), for the view Frequency each image received after obtaining the stamped signature message abstract, after receiving the image, the processing unit will Stamped signature message abstract is converted into binary coding using as the digital watermarking, and for each image, randomly selects the figure Multiple object pixels of picture, and by the binary coding each, sequentially replace the object pixel part position, by institute It states digital watermarking to be added into the video, in step (D), the Electronic Signature further includes the target picture of each image The location information of element and the part hyte for being relevant to the object pixel synthesize the built-up sequence information of the binary coding.
Preferably, the Electronic Signature production method with digital watermarking of the invention, the generated view of the shooting unit Frequency further includes video/audio, and in step (C), stamped signature message abstract is converted into audio frequency watermark to make by the processing unit For the digital watermarking, and the audio frequency watermark is superimposed to the video/audio, the digital watermarking is added to described In video.
Another object of the present invention is to provide it is a kind of can prove that signatory be file data signature content source and Sign the content only Electronic Signature verification method with digital watermarking related with the file data.By processing unit Lai real It applies, the processing unit is electrically connected storage unit, and the storage unit storage is relevant to file and the file including Electronic Signature Data, the Electronic Signature include video, and the video includes the signature that there is multiframe to be relevant to signatory Yu the signatory The image of track data and multiple digital watermarkings, each digital watermarking have identifying code, and the method includes step (A), step (B), step (C), step (D) and step (E).
In the step (A), the processing unit determines whether that target number watermark can be obtained from the video.
In the step (B), the target number watermark can be obtained from the video when the processing unit determines When, the identifying code is obtained according to the target number watermark.
In the step (C), the processing unit is relevant to according to the file data and the mathematical function The verifying of the file data is made a summary with message.
In the step (D), processing unit determination step (B) identifying code obtained and the verifying are used Whether message abstract is identical.
In the step (E), when the processing unit determines the identifying code and verifying message abstract phase Meanwhile it generating and indicating the effective message of the effective Electronic Signature of the Electronic Signature.
Preferably, the Electronic Signature verification method with digital watermarking of the invention, the Electronic Signature further include the time, The verify data of at least one of them of reference number of a document, device identification and Internet protocol address goes back root in step (C) It is made a summary according to the acquisition of the verify data verifying with message.
Preferably, the Electronic Signature verification method with digital watermarking of the invention, step (C) includes following sub-step:
(C-1) file message abstract is obtained according to the file data and the mathematical function；And
(C-2) verifying news are obtained according to the verify data, file message abstract and the mathematical function Breath abstract.
Preferably, the Electronic Signature verification method with digital watermarking of the invention, described image also have multiframe respectively There is the first image of digital watermarking and multiframe not to have the second image of the digital watermarking on ground, and step (A) includes following son Step:
(A-1) multiframe target image is randomly selected from the described image of the video；And
(A-2) determine whether that the target number watermark can be obtained from the target image, with determine whether can be from described Video obtains the target number watermark.
Preferably, the Electronic Signature verification method with digital watermarking of the invention, the digital watermarking of every one first image For a text with the identifying code, in step (B), the processing unit is using character recognition technology according to the mesh It marks digital watermarking and obtains the identifying code.
Preferably, the Electronic Signature verification method with digital watermarking of the invention, the Electronic Signature further includes correlation In multiple object pixels of every one first image location information and be relevant to the object pixel part position built-up sequence Information, step (B) includes following sub-step:
(B-1) according to the target image and corresponding location information acquisition with the target number watermark The object pixel of target image；And
(B-2) according to the target image and the corresponding built-up sequence information with the target number watermark, group The part position in the object pixel is closed, to obtain the identifying code.
Preferably, the Electronic Signature verification method with digital watermarking of the invention, the storage unit also store counting Value and threshold value, also comprise the steps of: after step (A)
(F) when the target number watermark can not be obtained from the target image by determining, determine that the count value is It is no to be greater than the threshold value；
(G) when determining the count value greater than the threshold value, generation indicates the invalid electronics of the Electronic Signature Stamped signature invalid message；And
(H) when determining the count value no more than the threshold value, the count value is added one, and repeat step (A).
Preferably, the Electronic Signature verification method with digital watermarking of the invention, the video of the Electronic Signature Further include audio, the audio includes video/audio and audio frequency watermark, step (B) the following steps are included:
(B-1) audio is isolated into audio frequency watermark；And
(B-2) audio frequency watermark is converted into the identifying code.
Preferably, the Electronic Signature verification method with digital watermarking of the invention, described image also have multiframe respectively There is the first image of digital watermarking and multiframe not to have the second image of the digital watermarking on ground, and step (A) includes following son Step:
(A-1) multiframe target image is randomly selected from described image, determines whether to obtain at least from the target image Two digital watermarkings to be compared；And
(A-2) when at least two digital watermarkings to be compared can be obtained from the target image by determining, determine this extremely Whether few two digital watermarkings to be compared are all identical, to determine whether that the target number watermark can be obtained from the video；
In step (B), when determining this at least two digital watermarkings to be compared being all identical, judgement can be from the video The target number watermark is obtained, using the digital watermarking of the target image as the target number watermark.
Another object of the present invention is to provide it is a kind of can prove that signatory be file data signature content source and Sign content only electronic device related with the file data.The electronic device includes shooting unit, input unit, and electricity Connect the processing unit of the shooting unit and the input unit.
It, in the signatory of data that signs documents, includes multiframe figure to generate that the shooting unit, which is used for the shooting during shooting, The video of picture, the file data are relevant to file.
The input unit during the shooting for generating and transmitting multiple signatures for being relevant to the signatory The track message of track.
During the shooting, the processing unit is relevant to described according to the file data and mathematical function acquisition The stamped signature message of file data is made a summary, and during the shooting, is obtaining the stamped signature message abstract for the video Each image received by the shooting unit afterwards, after receiving the image, according to the image for receiving the image certainly All track messages received by the input unit generate signature track datas before receiving time, and by the signature rail Mark data are added into the image, and during the shooting, will include the label when obtaining stamped signature message abstract The digital watermarking of chapter message abstract is added in the video, finally, processing unit generation includes through at the processing unit The Electronic Signature of the video of reason, and the file data is added in the Electronic Signature.
Preferably, electronic device of the invention, the processing unit is also according to current time, the file of the file data Number, be relevant to the device identification of the electronic device, and be relevant to the electronic device Internet protocol address its At least one of, obtain stamped signature message abstract, the Electronic Signature further include this at least one.
Preferably, electronic device of the invention, also comprising the communication unit for being electrically connected the processing unit, the communication unit Member connects time stamp server via communication network, and the file data is sent to by the processing unit via the communication unit The time stamp server, so that the time stamp server is according to current time, the file data and the mathematical function, It generates and transmits the stamped signature message via the communication unit and make a summary to the processing unit, and then obtain the processing unit The stamped signature message abstract is obtained, the Electronic Signature further includes the current time.
Preferably, electronic device of the invention, also comprising the communication unit for being electrically connected the processing unit, the communication unit Member connects time stamp server via communication network, during the shooting, the processing unit according to the file data and The mathematical function obtains the file message abstract for being relevant to the file data, and via the communication unit by the file Message abstract is sent to the time stamp server, so that the time stamp server is interrogated according to the current time, the file Breath abstract and the mathematical function generate and transmit the stamped signature message via the communication unit and make a summary to the processing list Member, and then the processing unit is made to obtain the stamped signature message abstract, the Electronic Signature further includes the current time.
Preferably, electronic device of the invention, the mathematical function is hash function.
Preferably, electronic device of the invention, received after obtaining the stamped signature message abstract for the video Each image, after receiving the image, the processing unit be it will be seen that and including the stamped signature message abstract text Described image is added as the digital watermarking in word, and the digital watermarking is added into the video.
Preferably, electronic device of the invention, received after obtaining the stamped signature message abstract for the video Each image, after receiving the image, the processing unit by the stamped signature message abstract be converted into binary coding to make For the digital watermarking, and for each image, multiple object pixels of the image are randomly selected, and by the binary coding Each, sequentially replaces the part position of the object pixel, the digital watermarking is added into the video, the electronics Stamped signature further includes the location information of the object pixel of each image and the part hyte synthesis for being relevant to the object pixel The built-up sequence information of the binary coding.
Preferably, electronic device of the invention, video caused by the shooting unit further includes video/audio, the place Stamped signature message abstract is converted into audio frequency watermark to be superimposed as the digital watermarking, and by the audio frequency watermark by reason unit To the video/audio, the digital watermarking is added into the video.
A further object of the present invention is to provide it is a kind of can prove that signatory be file data signature content source and Sign content only electronic device related with the file data.The electronic device includes to deposit described in storage unit and electrical connection The processing unit of storage unit.
Storage unit storage is relevant to file and the file data including Electronic Signature, and Electronic Signature includes video, described Video include have multiframe be relevant to signatory and the signatory signature track data image and multiple digital watermarkings, Each digital watermarking has identifying code.
The processing unit determines whether that target number watermark can be obtained from video, when the processing unit determines can be from When the video obtains the target number watermark, the processing unit obtains the verifying according to the target number watermark Code, and according to the file data and the mathematical function, the verifying that acquisition is relevant to the file data is made a summary with message, then Determine whether the identifying code obtained and verifying message abstract are identical, when the processing unit determines described test When demonstrate,proving code and the verifying identical with message abstract, the processing unit generation indicates the effective electronics label of the Electronic Signature Zhang Youxiao message.
Preferably, electronic device of the invention, the Electronic Signature further includes time, reference number of a document, device identification, and The verify data of at least one of them of network Internet Protocol address, the processing unit are obtained also according to the verify data The verifying is obtained to be made a summary with message.
Preferably, electronic device of the invention, the processing unit is obtained according to the file data and the mathematical function File message abstract is obtained, and the verifying is obtained according to the verify data, file message abstract and the mathematical function It is made a summary with message.
Preferably, electronic device of the invention, described image, which also has multiframe respectively, has the first figure of digital watermarking Picture and multiframe do not have the second image of the digital watermarking, and the processing unit randomly selects multiframe target figure from described image Picture, and determine whether that the target number watermark can be obtained from the target image, to determine whether to obtain from the video The target number watermark.
Preferably, electronic device of the invention, the digital watermarking of every one first image of the storage unit storage is tool There is the text of the identifying code, the processing unit is to utilize character recognition technology according to target number watermark acquisition Identifying code.
Preferably, electronic device of the invention, the Electronic Signature of the storage unit storage further includes being relevant to often The location information of multiple object pixels of one first image and be relevant to the object pixel part position built-up sequence information, The processing unit is according to the target image and corresponding location information acquisition with the target number watermark The object pixel of target image, and according to the target number watermark target image and the corresponding built-up sequence Information combines the part position in the object pixel, to obtain the identifying code.
Preferably, electronic device of the invention, the storage unit also stored count value and threshold value, when the processing unit It determines when can not obtain the target number watermark from the target image, whether the processing unit determines the count value Greater than the threshold value, when the processing unit determines the count value greater than the threshold value, the processing unit generation refers to The invalid Electronic Signature invalid message of the Electronic Signature is shown, when the processing unit determines the count value no more than institute When stating threshold value, the count value is added one by the processing unit, and again random from the described image of storage unit storage Multiframe target image is chosen, then determines whether that target number watermark can be obtained from the target image.
Preferably, electronic device of the invention, the video of the Electronic Signature further includes audio, and the audio includes Video/audio and audio frequency watermark, the audio is isolated audio frequency watermark by the processing unit, and the audio frequency watermark is converted At the identifying code.
Preferably, electronic device of the invention, described image, which also has multiframe respectively, has the first figure of digital watermarking Picture and multiframe do not have the second image of the digital watermarking, the described image that the processing unit is stored from the storage unit Multiframe target image is randomly selected, and determines whether that at least two digital watermarkings to be compared can be obtained from the target image, when The processing unit determines when can obtain at least two digital watermarkings to be compared from the target image, the processing unit Determining this, at least whether two digital watermarkings to be compared are all identical, to determine whether that the target number can be obtained from the video Watermark, when the processing unit determines this at least two digital watermarkings to be compared are all identical when, that is, determining can be from the video The target number watermark is obtained, the processing unit is using the digital watermarking of the target image as the target number water Print.
The beneficial effects of the present invention are: when generating Electronic Signature, obtain the label for being relevant to the file data Chapter message is made a summary, then the digital watermarking including stamped signature message abstract is added and obtains institute after the stamped signature message is made a summary The described image received, and when verifying Electronic Signature, with the target number watermark verification Electronic Signature of Electronic Signature whether Effectively, whereby, the uniqueness binding relationship of the described image of strengthening electronic stamped signature and this document data, to improve Electronic Signature Non-repudiation.
Detailed description of the invention
Other features of the invention and effect will be clearly presented in the embodiment referring to schema, in which:
Fig. 1 is a block diagram, illustrates a first embodiment of electronic device of the present invention for generating an Electronic Signature；
Fig. 2 is a schematic diagram, illustrates a file data of the first embodiment of the electronic device；
Fig. 3 is a schematic diagram, illustrates the number that the first embodiment of the electronic device is made a summary one including the stamped signature message A video is added in word watermark；
Fig. 4 is a schematic diagram, illustrates the first embodiment of the electronic device by an Electronic Signature and a signature track number According to addition this document data；
Fig. 5 is a flow chart, illustrates that the present invention has a first embodiment of Electronic Signature production method for digital watermarking；
Fig. 6 is a block diagram, illustrates a second embodiment of electronic device of the present invention for generating an Electronic Signature；
Fig. 7 is a flow chart, illustrates that the present invention has a second embodiment of Electronic Signature production method for digital watermarking；
Fig. 8 is a block diagram, illustrates a first embodiment of electronic device of the present invention for verifying an Electronic Signature；
Fig. 9 is a flow chart, illustrates that the present invention has a first embodiment of Electronic Signature verification method for digital watermarking；
Figure 10 is a flow chart, illustrates that the present invention has the one second of the Electronic Signature verification method of digital watermarking to implement Example；And
Figure 11 is a flow chart, illustrates that there is the present invention third of the Electronic Signature verification method of digital watermarking to implement Example.
Specific embodiment
Refering to fig. 1, a first embodiment of stamped signature electronic device 100 of the present invention includes that a shooting unit 11, one input is single Member 12 and a processing unit 14.The stamped signature electronic device 100 is for generating an Electronic Signature.
The shooting unit 11 is used to shoot one during a shooting in the signatory for signing a file data, to generate a packet The video of multiple image is included, this document data are relevant to a file 90, and are relevant to the document of this document 90 (such as including one Fig. 2).
The input unit 12 during the shooting for generating and transmitting the more signature tracks for being relevant to the signatory Track message, each track message includes a coordinate position for being relevant to the input unit.
The processing unit 14 is electrically connected the shooting unit 11 and the input unit 12.
It should be particularly noted that, the stamped signature electronic device 100 is, for example, intelligent flat or smartphone, the input list Member 12 is, for example, touch control screen.
Refering to fig. 1, Fig. 3, Fig. 4, Fig. 5, the present invention have the one first of the Electronic Signature production method of digital watermarking to implement Example, is implemented, and include step 201~204 by the first embodiment of stamped signature electronic device 100 of the present invention.
In step 201, during the shooting of the shooting unit 11, the processing unit 14 is according to this document data This document abstract and a mathematical function obtain the stamped signature message abstract for this document abstract that one is relevant to this document data (message digest).It is worth noting that, in the present embodiment, this document data are, for example, the electricity of the formats such as pdf or doc Subfile, the mathematical function are, for example, hash function (hash function), i.e., the processing unit 14 breathes out this document abstract Uncommon functional operation is not limited with obtaining stamped signature message abstract with this.
In step 202, during the shooting of the shooting unit 11, stamped signature message abstract is being obtained for each Received image afterwards, after the processing unit 14 receives the image from the shooting unit 11,14 basis of processing unit It receives received all track messages before the image receiving time of the image and generates a signature track data 92, and should Track data 92 of signing is added into the image, namely while the shooting unit 11 shoots signatory 93, the signatory 93 are signed using the input unit 12, so that the processing unit 14 combines track message and image to have the signature track to generate The image of data 92.In the present embodiment, which is, for example, a signature trajectory diagram, and track data of signing 92 are added the corresponding image of its receiving time.
In step 203, during the shooting of the shooting unit 11, when the processing unit 14 obtains the stamped signature message When abstract, which includes in the addition of digital watermarking 91 of the stamped signature message abstract video 94 by one.It is worth noting , in the present embodiment, which is that the digital watermarking 91 is periodically added into the video 94, in other realities It applies in example, which the digital watermarking 91 can also be added in the video 94 in a random basis, be not limited.
It is worth noting that, in the present embodiment, which is visible digital watermarking, which is It will be seen that and text including the stamped signature message abstract image of the video is added.
Want it is further noted that, in the present embodiment, step 203 be after step 202, in other embodiments, step 203 It can be before step 202.
In step 204, the processing unit 14 generation includes the electricity of the video 94 of the processing through step 202, step 203 Sub- stamped signature 95, and this document data are added in the Electronic Signature 95 and the signature track data 92.
Aforementioned present invention has the first embodiment of the Electronic Signature production method of digital watermarking, which exists It obtains after being relevant to the stamped signature message abstract of this document abstract of this document data, the visible number is added with text mode The image of watermark 91 to the video 94 whereby, strengthens the described image and this document of the Electronic Signature to generate the Electronic Signature The uniqueness binding relationship of data, and improve the non-repudiation of the Electronic Signature.
Refering to Fig. 6, a second embodiment of stamped signature electronic device 100 of the present invention is similar to stamped signature electronic device of the present invention 100 first embodiment, does not exist together and be only that: the second embodiment also includes a communication unit 13, the communication unit 13 A time stamp server (TimeStamp Server) 6 is connected via a communication network 5.
Refering to Fig. 6 and Fig. 7, the present invention has a second embodiment of the Electronic Signature production method of digital watermarking, by this The second embodiment of invention stamped signature electronic device 100 is implemented, and includes step 401~405.
In step 401, during the shooting of the shooting unit 11, the processing unit 14 is according to this document data This document abstract and a mathematical function obtain the file message abstract for this document abstract that one is relevant to this document data.
In step 402, during the shooting of the shooting unit 11, the processing unit 14 according to a current time, This document message abstract and the mathematical function obtain a stamped signature message for being relevant to the current time and this document message abstract Abstract.
It is worth noting that, in the present embodiment, which is to obtain stamped signature news by the time stamp server 6 Breath abstract, when which is sent to this via the communication network 5 for this document message abstract via the communication unit 13 Server 6 is stabbed, so that the time stamp server 6 is generated according to the current time, this document message abstract and the mathematical function Stamped signature message abstract, and to be sent to the processing unit by the communication unit 13 after private key encryption stamped signature message abstract 14。
In other embodiments, which it is just directly logical via this can not also to encrypt stamped signature message abstract Letter unit 13 transmit the stamped signature message make a summary to the processing unit 14 or the processing unit 14 directly according to the current time, This document message abstract and the mathematical function are generated stamped signature message abstract, are not limited with this.
Want it is further noted that, in the present embodiment, which plucked according to the current time, this document message It wants and the mathematical function, obtains stamped signature message abstract, in other embodiments, which can also be according to deserving Preceding time, a reference number of a document of this document data, one are relevant to the device identification of the stamped signature electronic device 100 and one related In at least one of them of the network Internet Protocol address of the stamped signature electronic device 100, this document message abstract and the mathematics Function is obtained stamped signature message abstract, but is not limited with this.
In step 403, during the shooting of the shooting unit 11, stamped signature message abstract is being obtained for each Received image afterwards, after the processing unit 14 receives the image from the shooting unit 11,14 basis of processing unit It receives received all track messages before the image receiving time of the image and generates a signature track data, and by the label Name track data is added into the image.
In step 404, during the shooting of the shooting unit 11, when the processing unit 14 obtains the stamped signature message When abstract, which the digital watermarking that one makes a summary including the stamped signature message is added in the video.
It is worth noting that, in the present embodiment, the digital watermarking be it is sightless, which interrogates the stamped signature Breath abstract is converted into one (binary coding) using as the digital watermarking, and for each image, randomly selects the multiple of the image Object pixel, and by the binary coding each, sequentially replace the object pixel part position, which is added Enter into the video.For example, image caused by the shooting unit 11 is RGB full color image, i.e. 3 kinds of colors of RGB are each 8 are accounted for, when the binary coding is 8, such as 10000001, which will take 3 object pixels, the mesh at random The first object pixel that pixel is, for example, R:00100110G:11101001B:11001000 is marked, R:00100110G: The second object pixel of 11001001B:11101001 and the third target picture of R:11001000G:00100111B:11101001 Element, the processing unit 14 by the binary coding each, sequentially replace last position of the object pixel (not include third The blue of pixel) so that first pixel becomes R:00100111G:11101000B:11001000, which becomes R: 00100110G:11001000B:11101000, the third pixel become R:11001000G:00100111B:11101001.Value It obtains it is noted that the video of the shooting unit 11 for generating is also in the embodiment of other sightless digital watermarkings Including a video/audio, which can also make a summary the stamped signature message and be converted into the digital audio frequency watermark using as the number Word watermark, and by the digital watermarking stacking to the video/audio, which is added into the video, the number is converted into Word watermark and the mode that the digital watermarking is added are, for example, stamped signature message abstract to be encoded into a bit string, then the bit string is embedded in The video/audio, but not limited to this.
Want it is further noted that, in the present embodiment, step 404 be after step 403, in other embodiments, step 404 It can be before step 403.
In step 405, which generates the location information of the object pixel including each image, correlation The built-up sequence information of the binary coding is synthesized in the part hyte of the object pixel, and the place through step 403, step 404 The Electronic Signature of the video of reason, and this document data are added in the Electronic Signature and the signature track data.
Aforementioned present invention has the second embodiment of the Electronic Signature production method of digital watermarking, which exists It obtains after being relevant to this document message abstract of this document abstract of this document data, interrogates this document via the communication unit 13 Breath abstract is sent to the time stamp server 6, and the time stamp server 6 is according to the current time, this document message abstract and the mathematics Function generates and transmits the stamped signature message and makes a summary to the processing unit 14, and the stamped signature message is made a summary in the processing unit 14 The sightless digital watermarking is added in a manner of replacing the part of the object pixel of video position, to generate the electronics label Chapter, whereby, the described image of strengthening electronic stamped signature and the uniqueness binding relationship of this document data, and improve the Electronic Signature Non-repudiation.
Refering to Fig. 8, the first embodiment that the present invention verifies electronic device 300 includes a storage unit 31 and an electrical connection The processing unit 32 of the storage unit 31.The verifying electronic device 300 is for verifying an Electronic Signature to be verified.
The storage unit 31 storage Electronic Signature to be verified, one are relevant to the file data of a file, a count value, and One threshold value, this document data include a documentation summary for being relevant to the document.The Electronic Signature to be verified includes a video, the view There is multiframe to be relevant to the signature track data of a signatory and the signatory and respectively have the of a digital watermarking for frequency One image and multiframe are relevant to the signature track data of the signatory and the signatory and do not have the second of the digital watermarking Image, each digital watermarking have an identifying code.It is worth noting that, in the present embodiment, this document data be, for example, pdf or The electronic document of the formats such as doc, the mathematical function are, for example, hash function, are not limited with this.
Refering to Fig. 8 and Fig. 9, the present invention has a first embodiment of the Electronic Signature verification method of digital watermarking, by this Invention verifies the first embodiment of electronic device 300 to implement, and includes step 501~510.
In step 501, the described image for the video which is stored from the storage unit 31 is selected at random Take multiframe target image.
In step 502, which determines whether that at least two can be obtained from the target image of the video Digital watermarking to be compared.When the processing unit 32 determine can not be obtained from the target image of the video at least two to than When to digital watermarking, step 503 is carried out；And when the processing unit 32 determine can be obtained from the target image of the video to When few two digital watermarkings to be compared, step 506 is carried out.
In step 503, which determines whether the count value is greater than the threshold value.When the processing unit 32 determines When the count value is not more than the threshold value out, step 504 is carried out；And when the processing unit 32 determines the count value greater than the threshold value When, carry out step 505.
In step 504, which adds one for the count value, and repeats step 501, to randomly select others Target image.
In step 505, the processing unit 32 generate one indicate the invalid Electronic Signature of the Electronic Signature to be verified without Imitate message.
In step 506, the processing unit 32 determine this at least whether two digital watermarkings to be compared all identical, with determine Whether a target number watermark can be obtained from the target image of the video, when the processing unit 32 determines this at least two When digital watermarking to be compared is all identical, that is, determine that the target number watermark can be obtained from the target image of the video, at this Unit 32 is managed using the digital watermarking of the target image of the video as the target number watermark, and carries out step 507；And work as When the processing unit 32 determines this at least two digital watermarkings to be compared are not exactly the same, that is, determining can not be from the institute of the video It states target image and obtains the target number watermark, and carry out step 503.
It is important to note that in other embodiments, in step 502, which can be determined whether can Obtain a digital watermarking to be compared from the target image of the video, when the processing unit 32 determines can be from the institute of the video When stating target image and obtaining the digital watermarking to be compared, i.e., using the digital watermarking to be compared as the target number watermark, go forward side by side Row step 507；And the digital water to be compared can not be obtained from the target image of the video when the processing unit 32 determines When print, step 503 is carried out.
In step 507, which obtains the identifying code according to the target number watermark.
It is worth noting that, in the present embodiment, which is visible digital watermarking, i.e., every one first figure The digital watermarking of picture is a text with this document message abstract, which is to utilize a character recognition (character recognition) technology obtains the identifying code according to the target number watermark, but is not limited with this.
In the embodiment that other target number watermarks are sightless digital watermarking, which is also stored It is relevant to the location information of multiple object pixels of every one first image and is relevant to the combination of the part position of the object pixel Order information, in step 507, the processing unit 32 according to the target number watermark target image and it is corresponding should Location information obtains the object pixel of the target image, and target image and the corresponding group with the target number watermark Order information is closed, the part position in the object pixel is combined, to obtain the identifying code.
In step 508, which obtains one according to this document of this document data abstract and the mathematical function The verifying for being relevant to this document abstract of this document data is made a summary with message.
In step 509, the processing unit 32 determine the identifying code obtained and the verifying message abstract whether phase Together.When the processing unit 32 determines the identifying code and verifying message abstract is not identical, step 505 is carried out；And works as and be somebody's turn to do Processing unit 32 determine the identifying code it is identical as the verifying message abstract when, carry out step 510.
In step 510, the processing unit 32 generation indicates that the effective Electronic Signature of Electronic Signature to be verified is effective Message.
Arranged in pairs or groups again refering to Fig. 3, for example, through step 501~507 obtain the video the digital watermarking 91 identifying code (i.e. AB123CD45E), and this document abstract is done hash function calculating in step 508 is obtained after the verifying made a summary with message, If the verifying is made a summary with message is equal to the identifying code, i.e., verifying message abstract is also AB123CD45E, then it represents that this is to be tested It is effective to demonstrate,prove Electronic Signature.
Aforementioned present invention have digital watermarking Electronic Signature verification method the first embodiment, the processing unit 32 with Machine chooses the target image of the video, and determine whether to obtain from the target image of the video at least two to than To digital watermarking, then determine to obtain this at least whether two digital watermarkings to be compared are all identical, with determination number obtained Watermark be it is correct, improve digital watermarking verifying accuracy then obtain the identifying code, and root from the target number watermark According to this document abstract of this document data and the mathematical function, obtains the verifying and made a summary with message, then determine that obtained this is tested It is whether identical with message abstract as the verifying to demonstrate,prove code, it is whether effective to verify the Electronic Signature to be verified, whereby, improve electronics label The non-repudiation of chapter.
The present invention verifies a second embodiment of electronic device 300, similar to present invention verifying electronic device 300 this One embodiment (such as Fig. 8), does not exist together and be only that: the Electronic Signature to be verified that the storage unit 31 is stored also includes to test Demonstrate,prove data, the verify data have the time, in other embodiments, the verify data can have the time, a reference number of a document, One device identification and at least one of them of a network Internet Protocol address.Refering to Fig. 8 and Figure 10, the present invention has number One second embodiment of the Electronic Signature verification method of word watermark is similar to the first embodiment, verifies electronic device by the present invention 300 second embodiment is implemented, and includes step 601~611, and wherein step 601~607,611 are identical to step respectively 501~507,509 (such as Fig. 9) illustrate that it does not exist together below.
In step 608, which obtains one according to this document of this document data abstract and the mathematical function It is relevant to the file message abstract of this document data.
In step 609, the processing unit 32 is according to the time of the verify data, this document message abstract and the number Mathematic(al) function, acquisition one is relevant to the time and the verifying of this document message abstract is made a summary with message.It is worth noting that, at other The verify data has the time, this document number, the device identification and the network Internet Protocol address wherein at least In the embodiment of one, the processing unit 32 be according to the verify data this at least one, this document message abstract and the number Mathematic(al) function obtains the verifying and is made a summary with message.
In step 610, the processing unit 32 determine the identifying code obtained and the verifying message abstract whether phase Together.When the processing unit 32 determines the identifying code and verifying message abstract is not identical, step 605 is carried out；And works as and be somebody's turn to do Processing unit 32 determine the identifying code it is identical as the verifying message abstract when, carry out step 611.
Aforementioned present invention has the second embodiment of the Electronic Signature verification method of digital watermarking, which is turned It changes the identifying code into, and according to this document of this document data abstract and the mathematical function, obtains this document message abstract, then root According to the time of the verify data, this document message abstract and the mathematical function, obtains the verifying and made a summary with message, then sentenced Whether whether fixed identifying code obtained is identical with message abstract as the verifying, effective to verify the Electronic Signature to be verified, Whereby, the non-repudiation of Electronic Signature is improved.
The present invention verifies a 3rd embodiment of electronic device 300, similar to present invention verifying electronic device 300 this Two embodiments (such as Fig. 8), do not exist together and are only that: the view that the Electronic Signature to be verified that the storage unit 31 is stored includes Frequency also has an audio, which has a video/audio and an audio frequency watermark, which includes an identifying code.
Refering to Fig. 8 and Figure 11, the present invention has a 3rd embodiment of the Electronic Signature verification method of digital watermarking, similar In the second embodiment, implemented by the 3rd embodiment of present invention verifying electronic device 300, and include step 801~ 807, wherein step 802,804,805,807 are identical to step 605,608,609,611 (such as Figure 10) respectively, illustrate it below not It exists together.
In step 801, which determines whether that the audio frequency watermark can be isolated from the audio of the video, i.e., Determine whether that a target number watermark can be obtained from the video.When the processing unit 32 determines cannot be from the audio of the video When isolating the audio frequency watermark, that is, when determining that the target number watermark can not be obtained from the video, carry out step 802；And works as and be somebody's turn to do Processing unit 32 determines when can isolate the audio frequency watermark from the audio of the video, that is, determines that the mesh can be obtained from the video When marking digital watermarking, step 803 is carried out.
In step 803, which isolates the audio frequency watermark from the audio of the video, using as the target Digital watermarking, and the target number watermark is converted into the identifying code.
In step 806, the processing unit 32 determine the identifying code obtained and the verifying message abstract whether phase Together.When the processing unit 32 determines the identifying code and verifying message abstract is not identical, step 802 is carried out；And works as and be somebody's turn to do Processing unit 32 determine the identifying code it is identical as the verifying message abstract when, carry out step 807.
Aforementioned present invention have digital watermarking Electronic Signature verification method the first embodiment, the processing unit 32 from The audio of the video isolates the audio frequency watermark, and the audio frequency watermark is converted into the identifying code, and according to this document data This document abstract and the mathematical function, obtain this document message abstract, interrogated further according to time of the verify data, this document Breath abstract and the mathematical function, obtain the verifying and are made a summary with message, then determination step identifying code obtained and the verifying It whether identical is made a summary with message, it is whether effective to verify the Electronic Signature to be verified, whereby, improve the undeniable of Electronic Signature Property.
In conclusion Electronic Signature generation and verification method and electronic device of the present invention with digital watermarking, are generating When Electronic Signature, which obtains the identifying code for being relevant to this document data, then will include that the stamped signature message is made a summary The digital watermarking be added obtain stamped signature message abstract after the received video, to generate the Electronic Signature, and testing When demonstrate,proving Electronic Signature, whether which verifies the Electronic Signature to be verified with the digital watermarking of the Electronic Signature to be verified Effectively, whereby, the uniqueness binding relationship of the described image of strengthening electronic stamped signature and this document data, to improve Electronic Signature Non-repudiation, therefore the purpose of the present invention can be reached really.
As described above, only the embodiment of the present invention, but cannot be limited the scope of implementation of the present invention with this, i.e., it is all According to simple equivalent changes and modifications made by claims of the present invention and description, all still belong to the scope of the present invention.

Claims (34)

1. a kind of Electronic Signature production method with digital watermarking, is implemented by processing unit, the processing unit electrical connection Shooting unit and input unit, the shooting unit is used to shoot during shooting in the signatory of data that signs documents, to produce It is raw to include the video of multiple image, and the video is transmitted to the processing unit, the file data is relevant to file, described Input unit is used for during the shooting, is generated and is transmitted the more track news for being relevant to the signature track of the signatory It ceases to the processing unit, it is characterised in that: the method comprises the steps of:
(A) during the shooting, the label for being relevant to the file data are obtained according to the file data and mathematical function Chapter message abstract；
(B) during the shooting, for the video each figure received after obtaining the stamped signature message abstract Picture, after receiving the image, according to all track messages received before the image receiving time for receiving the image certainly Signature track data is generated, and the signature track data is added into the image；
It (C) will include the number of stamped signature message abstract when obtaining the stamped signature message abstract during shooting Watermark is added in the video；And
(D) generate include the processing through step (B) and step (C) the video Electronic Signature, and by the Electronic Signature The file data is added.
2. the Electronic Signature production method according to claim 1 with digital watermarking, it is characterised in that: in step (A) In, also according to current time, the file data reference number of a document, be relevant to the dress of the electronic device including the processing unit Identifier is set, and is relevant at least one of them of the network Internet Protocol address of the electronic device, obtains the stamped signature Message abstract, in step (D), the Electronic Signature further include this at least one.
3. the Electronic Signature production method according to claim 1 with digital watermarking, it is characterised in that: the processing is single Member is also electrically connected communication unit, and the communication unit connects time stamp server via communication network, in step (A), via institute State communication unit and the file data be sent to the time stamp server so that the time stamp server according to it is current when Between, the file data and the mathematical function, generate and simultaneously transmit the stamped signature message via the communication unit and make a summary to institute Processing unit is stated, and then the processing unit is made to obtain the stamped signature message abstract, in step (D), the Electronic Signature is also Including the current time.
4. the Electronic Signature production method according to claim 1 with digital watermarking, it is characterised in that: the processing is single Member is also electrically connected communication unit, and the communication unit connects time stamp server via communication network, and step (A) includes following sub-step It is rapid:
(A-1) during the shooting, the number of files is relevant to according to the file data and mathematical function acquisition According to file message abstract；And
(A-2) file message abstract is sent to the time stamp server via the communication unit, so that when described Server is stabbed according to the current time, file message abstract and the mathematical function, is generated and via the communication unit Member transmits the stamped signature message and makes a summary to the processing unit, and then the processing unit is made to obtain the stamped signature message abstract；
In step (D), the Electronic Signature further includes the current time.
5. the Electronic Signature production method according to claim 1 with digital watermarking, it is characterised in that: in step (A) In, the mathematical function is hash function.
6. the Electronic Signature production method according to claim 1 with digital watermarking, it is characterised in that: in step (C) In, for the video each image received after obtaining the stamped signature message abstract, after receiving the image, institute Stating processing unit is that the image is added as the digital watermarking in text will be seen that and including stamped signature message abstract, with The digital watermarking is added into the video.
7. the Electronic Signature production method according to claim 1 with digital watermarking, it is characterised in that: in step (C) In, for the video each image received after obtaining the stamped signature message abstract, after receiving the image, institute It states processing unit and stamped signature message abstract is converted into binary coding using as the digital watermarking, and for each image, Randomly select multiple object pixels of the image, and by the binary coding each, sequentially replace the object pixel Part position, the digital watermarking is added into the video, and in step (D), the Electronic Signature further includes each figure The location information of the object pixel of picture and the part hyte for being relevant to the object pixel synthesize the group of the binary coding Close order information.
8. the Electronic Signature production method according to claim 1 with digital watermarking, it is characterised in that: the shooting is single Video caused by member further includes video/audio, and in step (C), stamped signature message abstract is converted by the processing unit Audio frequency watermark is to be superimposed to the video/audio as the digital watermarking, and by the audio frequency watermark, by the digital water Print is added into the video.
9. a kind of Electronic Signature verification method with digital watermarking, is implemented by verification processing unit, the verification processing list Member electrical connection storage unit, the storage unit storage are relevant to file and the file data including Electronic Signature, the electronics Stamped signature includes video, and the video includes the figure that there is multiframe to be relevant to signatory with the signature track data of the signatory Picture and multiple digital watermarkings, each digital watermarking have identifying code, it is characterised in that: the method comprises the steps of:
(A) determine whether that target number watermark can be obtained from the video；
(B) when the target number watermark can be obtained from the video by determining, institute is obtained according to the target number watermark State identifying code；
(C) according to the file data and the mathematical function, the verifying that acquisition is relevant to the file data is made a summary with message；
(D) whether determination step (B) identifying code obtained is made a summary with the verifying with message identical；And
(E) when determine the identifying code it is identical as the verifying message abstract when, generation indicate that the Electronic Signature has The effective message of the Electronic Signature of effect.
10. the Electronic Signature verification method according to claim 9 with digital watermarking, it is characterised in that: the electronics Stamped signature further includes the verifying number of at least one of them of time, reference number of a document, device identification and network Internet Protocol address According in step (C), the acquisition verifying also according to the verify data is made a summary with message.
11. the Electronic Signature verification method according to claim 10 with digital watermarking, step (C) include following sub-step It is rapid:
(C-1) file message abstract is obtained according to the file data and the mathematical function；And
(C-2) verifying is obtained according to the verify data, file message abstract and the mathematical function to be plucked with message It wants.
12. the Electronic Signature verification method according to claim 9 with digital watermarking, it is characterised in that: described image The second image that also with multiframe respectively there is the first image of digital watermarking and multiframe not to have the digital watermarking, step (A) include following sub-step:
(A-1) multiframe target image is randomly selected from the described image of the video；And
(A-2) determine whether that the target number watermark can be obtained from the target image, with determine whether can be from the video Obtain the target number watermark.
13. the Electronic Signature verification method according to claim 12 with digital watermarking, it is characterised in that: every one first The digital watermarking of image is a text with the identifying code, and in step (B), the processing unit is to utilize character recognition Technology obtains the identifying code according to the target number watermark.
14. the Electronic Signature verification method according to claim 12 with digital watermarking, it is characterised in that: the electronics Stamped signature further includes the location information for being relevant to multiple object pixels of every one first image and the portion for being relevant to the object pixel The built-up sequence information of quartile, step (B) includes following sub-step:
(B-1) target is obtained according to the target image and the corresponding location information with the target number watermark The object pixel of image；And
(B-2) according to the target image and the corresponding built-up sequence information with the target number watermark, institute is combined The part position in object pixel is stated, to obtain the identifying code.
15. the Electronic Signature verification method according to claim 12 with digital watermarking, it is characterised in that: the storage Unit also stored count value and threshold value, also comprise the steps of: after step (A)
(F) when the target number watermark can not be obtained from the target image by determining, determine whether the count value is big In the threshold value；
(G) when determining the count value greater than the threshold value, generation indicates the invalid Electronic Signature of the Electronic Signature Invalid message；And
(H) when determining the count value no more than the threshold value, the count value is added one, and repeat step (A).
16. the Electronic Signature verification method according to claim 9 with digital watermarking, it is characterised in that: the electronics The video of stamped signature further includes audio, and the audio includes video/audio and audio frequency watermark, step (B) the following steps are included:
(B-1) audio is isolated into audio frequency watermark；And
(B-2) audio frequency watermark is converted into the identifying code.
17. the Electronic Signature verification method according to claim 9 with digital watermarking, it is characterised in that: described image The second image that also with multiframe respectively there is the first image of digital watermarking and multiframe not to have the digital watermarking, step (A) include following sub-step:
(A-1) multiframe target image is randomly selected from described image, determines whether that at least two can be obtained from the target image Digital watermarking to be compared；And
(A-2) when at least two digital watermarkings to be compared can be obtained from the target image by determining, determine this at least two Whether a digital watermarking to be compared is all identical, to determine whether that the target number watermark can be obtained from the video；
In step (B), when determining this at least two digital watermarkings to be compared being all identical, judgement can be obtained from the video The target number watermark, using the digital watermarking of the target image as the target number watermark.
18. a kind of electronic device, for generating Electronic Signature, it is characterised in that: include:
Shooting unit, for view of the shooting in the signatory of data that signs documents, with generation including multiple image during shooting Frequently, the file data is relevant to file；
Input unit, for the more rails for being relevant to the signature track of the signatory to be generated and transmitted during the shooting Mark message；
Processing unit is electrically connected the shooting unit and the input unit；
Wherein, during the shooting, the processing unit is relevant to institute according to the file data and mathematical function acquisition The stamped signature message abstract of file data is stated, and during the shooting, the video is plucked in the acquisition stamped signature message Each image received by the shooting unit after wanting, after receiving the image, according to the figure for receiving the image certainly As all track messages received by the input unit generate signature track datas before receiving time, and by the signature Track data is added into the image, and during the shooting, will include described when obtaining stamped signature message abstract The digital watermarking of stamped signature message abstract is added in the video, finally, processing unit generation includes through processing unit processes The video the Electronic Signature, and the file data is added in the Electronic Signature.
19. electronic device according to claim 18, it is characterised in that: the processing unit is also according to current time, institute It states the reference number of a document of file data, be relevant to the device identification of the electronic device, and be relevant to the net of the electronic device At least one of them of network Internet protocol address, obtains stamped signature message abstract, the Electronic Signature further include this at least One.
20. electronic device according to claim 18, it is characterised in that: the also communication comprising being electrically connected the processing unit Unit, the communication unit connect time stamp server via communication network, and the processing unit is via the communication unit by institute It states file data and is sent to the time stamp server, so that the time stamp server is according to current time, the file data, And the mathematical function, it generates and transmits the stamped signature message via the communication unit and make a summary to the processing unit, in turn The processing unit is set to obtain the stamped signature message abstract, the Electronic Signature further includes the current time.
21. electronic device according to claim 18, it is characterised in that: the also communication comprising being electrically connected the processing unit Unit, the communication unit via communication network connect time stamp server, during the shooting, the processing unit according to The file data and the mathematical function obtain the file message abstract for being relevant to the file data, and via the communication Unit by the file message abstract be sent to the time stamp server so that the time stamp server according to it is described current when Between, file message abstract and the mathematical function, generate and simultaneously transmit the stamped signature message via the communication unit and make a summary The extremely processing unit, and then the processing unit is made to obtain the stamped signature message abstract, the Electronic Signature further includes described Current time.
22. electronic device according to claim 18, it is characterised in that: the mathematical function is hash function.
23. electronic device according to claim 18, it is characterised in that: obtaining the stamped signature message for the video Received each image after abstract, after receiving the image, the processing unit be it will be seen that and including the label Described image is added as the digital watermarking in the text of chapter message abstract, and the digital watermarking is added to the video In.
24. electronic device according to claim 18, it is characterised in that: obtaining the stamped signature message for the video Received each image after abstract, after receiving the image, the stamped signature message is made a summary and is converted by the processing unit At binary coding using as the digital watermarking, and for each image, multiple object pixels of the image are randomly selected, and will Each of the binary coding sequentially replaces the part position of the object pixel, the digital watermarking is added to described In video, the Electronic Signature further includes the location information of the object pixel of each image and is relevant to the object pixel Part hyte synthesize the built-up sequence information of the binary coding.
25. electronic device according to claim 18, it is characterised in that: video caused by the shooting unit further includes Stamped signature message abstract is converted into audio frequency watermark using as the digital watermarking by video/audio, the processing unit, and will The audio frequency watermark is superimposed to the video/audio, and the digital watermarking is added into the video.
26. a kind of electronic device, for verifying Electronic Signature, it is characterised in that: include:
Storage unit, storage are relevant to the file data of file and Electronic Signature, and the Electronic Signature includes video, the video Including be relevant to multiframe the signature track data of signatory and the signatory image and multiple digital watermarkings, it is each Digital watermarking has identifying code；
Processing unit is electrically connected storage unit；
Wherein, the processing unit determines whether that target number watermark can be obtained from the video, when the processing unit determines When can obtain the target number watermark from the video out, the processing unit is according to target number watermark acquisition Identifying code, and according to the file data and the mathematical function, the verifying that acquisition is relevant to the file data is plucked with message It wants, then determines whether the identifying code obtained and verifying message abstract are identical, when the processing unit determines When the identifying code and the verifying identical with message abstract, the processing unit generation indicates that the Electronic Signature is effective The effective message of Electronic Signature.
27. described in claim 26 with digital watermarking Electronic Signature verification method, the Electronic Signature further include the time, The verify data of at least one of them of reference number of a document, device identification and network Internet Protocol address, the processing unit The acquisition verifying also according to the verify data is made a summary with message.
28. electronic device according to claim 27, it is characterised in that: the processing unit according to the file data and The mathematical function obtains file message abstract, and according to the verify data, file message abstract and the mathematics letter Number obtains the verifying and is made a summary with message.
29. electronic device according to claim 26, it is characterised in that: described image also there is multiframe respectively to have number The first image and multiframe of word watermark do not have the second image of the digital watermarking, and the processing unit is random from described image Multiframe target image is chosen, and determines whether that the target number watermark can be obtained from the target image, with determine whether can The target number watermark is obtained from the video.
30. electronic device according to claim 29, it is characterised in that: every one first image of the storage unit storage Digital watermarking be the text with the identifying code, the processing unit be using character recognition technology according to the number of targets Word watermark obtains the identifying code.
31. electronic device according to claim 29, it is characterised in that: the Electronic Signature of the storage unit storage It further include the part position for being relevant to the location information of multiple object pixels of every one first image and being relevant to the object pixel Built-up sequence information, the processing unit according to the target number watermark target image and corresponding institute's rheme Set the object pixel of target image described in information acquisition, and according to target image with the target number watermark and corresponding The built-up sequence information, combine in the object pixel part position, to obtain the identifying code.
32. electronic device according to claim 29, it is characterised in that: the storage unit also stored count value and threshold Value, when the processing unit, which determines, to obtain the target number watermark from the target image, the processing unit Determine whether the count value is greater than the threshold value, when the processing unit determines the count value greater than the threshold value, The processing unit generation indicates the invalid Electronic Signature invalid message of the Electronic Signature, when the processing unit determines When the count value is not more than the threshold value, the count value is added one by the processing unit, and again from the storage unit The described image of storage randomly selects multiframe target image, then determines whether that target number water can be obtained from the target image Print.
33. electronic device according to claim 26, it is characterised in that: the video of the Electronic Signature further includes sound Frequently, the audio includes video/audio and audio frequency watermark, and the audio is isolated audio frequency watermark by the processing unit, and by institute It states audio frequency watermark and is converted into the identifying code.
34. electronic device according to claim 26, it is characterised in that: described image also there is multiframe respectively to have number The first image and multiframe of word watermark do not have the second image of the digital watermarking, and the processing unit is from the storage unit The described image of storage randomly selects multiframe target image, and determine whether to obtain from the target image at least two to than To digital watermarking, at least two digital watermarkings to be compared can be obtained from the target image when the processing unit determines When, the processing unit determines this, and at least whether two digital watermarkings to be compared are all identical, with determine whether can be from the video Obtain the target number watermark, when the processing unit determines this at least two digital watermarkings to be compared are all identical when, i.e., Judgement can obtain the target number watermark from the video, the processing unit using the digital watermarking of the target image as The target number watermark.
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