CN109740317A - A kind of digital finger-print based on block chain deposits card method and device - Google Patents
A kind of digital finger-print based on block chain deposits card method and device Download PDFInfo
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- CN109740317A CN109740317A CN201811642946.2A CN201811642946A CN109740317A CN 109740317 A CN109740317 A CN 109740317A CN 201811642946 A CN201811642946 A CN 201811642946A CN 109740317 A CN109740317 A CN 109740317A
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- original picture
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Abstract
The present invention provides a kind of digital finger-prints based on block chain to deposit card method and device, this method includes when the author information of the original picture and original picture that receive user's upload, the cryptographic Hash of original picture is calculated using default hash algorithm based on received original picture and its author information, and adds uplink time stamp for original picture；Original picture to receive generates private key and public key pair, is encrypted using cryptographic Hash of the private key to original picture to generate user's signature, combines the user's signature of generation and public key to obtain digital finger-print；The corresponding card data item of depositing including digital finger-print, cryptographic Hash, author information, uplink time stamp and user's signature of original picture is sent to server, original picture is deposited into card data item write-in block chain by server.The picture unique number finger print information generated as a result, using the present invention program, it is subsequent directly to carry out the scenes such as copyright detection, the transaction of off-line verification, copyright using the digital finger-print.
Description
Technical field
The present invention relates to block chain technical field, more particularly to a kind of digital finger-print based on block chain deposit card method and
Device.
Background technique
The overload of information is so that public attention becomes new scarce resource, in order to grab public attention, largely
The low-quality content to attract eyeball, which is manufactured, is flooded with screen, the behavior severe crush distorted and plagiarized other's works
The living space of premium content creator.Therefore, content creator's equity is protected, helping original value realization is current internet
The urgent need of premium content creator.
The decentralization of block chain, openly, transparent and can not to distort characteristic be the ideal carrier that can be saved copyright and deposit card,
It is that will directly store wait deposit card file cryptographic Hash to chain that existing block chain, which deposits card mode, only demonstrates the existence of works.Recognize
It is poor to demonstrate,prove trellis expansion, can not support the application scenarios such as transaction.
In the prior art, use file cryptographic Hash as card content is deposited, when carrying out depositing card, user selects a kind of Hash to calculate
Method, such as md5 calculate wait deposit card file Hash feature, block chain are written in this feature.When verifying, shows this document original text, use phase
Hash feature and block chain timestamp in Hash feature, with block chain is calculated with algorithm to compare, so that it is determined that this document
Uplink time.But the technology only can prove that works existence, authentication format scalability is poor, can not support the application such as transaction
Scene, the finger print information of generation are mostly the form of Hash codes (such as 5d45f1373f3c9f5eb1d32af361998240), can
The property read is poor, and user is difficult to write and share.It would therefore be highly desirable to solve existing in the prior art to deposit card trellis expansion, readable
The poor problem of property.
Summary of the invention
In view of the above problems, it proposes on the present invention overcomes the above problem or at least be partially solved in order to provide one kind
The digital finger-print based on block chain for stating problem deposits card method and device.
According to the present invention on the one hand, it provides a kind of digital finger-print based on block chain and deposits card method, comprising:
When the author information of the original picture and original picture that receive user's upload, based on received original picture and
Its author information calculates the cryptographic Hash of original picture using default hash algorithm, and adds uplink time stamp for original picture；
Original picture to receive generates private key and public key pair, is encrypted using cryptographic Hash of the private key to original picture
To generate user's signature, combine the user's signature of generation and the public key to obtain digital finger-print；
The original picture is corresponding including the digital finger-print, cryptographic Hash, author information, uplink time stamp and use
The card data item of depositing of family signature is sent to server, and the original picture is deposited card data item write-in block by the server
Chain.
It is optionally, described to add uplink time stamp for original picture, comprising:
Receive the trusted timestamp for carrying authoritative institution's signing messages from authoritative institution；
Trusted timestamp based on the authoritative institution is that the original picture adds uplink time stamp.
It is optionally, described to add uplink time stamp for original picture, comprising:
State that the time determines the original picture uplink time by user, wherein the user states the time by described
Upload user's statement of original picture；
It is that the original picture adds uplink time stamp based on determining original picture uplink time.
Optionally, the original picture is deposited into card data item write-in block chain, comprising:
The uplink time stamp deposited in card data item for defining the original picture is upload_time, in the block chain
The timestamp that the block generation of card data item is deposited for being written into original picture is block_timestamp；
Judge whether the uplink time stamp upload_time meets block_timestamp- preset time <upload_
The condition of time <block_timestamp, if so, the original picture is deposited card data item write-in block chain.
Optionally, the original picture is deposited into card data item write-in block chain, comprising:
Block chain is written into using preset format in the digital finger-print for including in card data item of depositing of the original picture.
Optionally, block is written into using preset format in the digital finger-print for including in card data item of depositing of the original picture
Chain, comprising:
The original picture is deposited into the digital finger-print for including in card data item with the write-in of original binary character string format
The block chain.
Optionally, block is written into using preset format in the digital finger-print for including in card data item of depositing of the original picture
Chain, comprising:
Base58 coding is carried out to the digital finger-print of original binary character string format, obtains the number of digital DNA format
Fingerprint；
The block chain is written into digital DNA format in the digital finger-print.
Optionally, block is written into using preset format in the digital finger-print for including in card data item of depositing of the original picture
Chain, comprising:
The field of preset quantity is intercepted from the digital finger-print of the number DNA format；
The block chain is written using the field for the preset quantity being truncated to as the digital finger-print.
Optionally, block is written into using preset format in the digital finger-print for including in card data item of depositing of the original picture
Chain, comprising:
The version number for identifying different digital fingerprint preset format is added for the digital finger-print；
The digital finger-print of preset format after addition version number is recorded on the block chain.
Optionally, the method also includes:
State according to the picture determines the state of the corresponding digital finger-print of the picture, wherein the shape of digital finger-print
State includes waiting stateful transaction or complete transaction state；
Identification information corresponding with the digital finger-print state is added for the digital finger-print.
Optionally, the method also includes:
Receive other attribute informations for the original picture that the user uploads；
By described original picture itself, original picture deposit card data item, original picture other attribute informations be uploaded to
Server, to realize the copyright registration to the original picture.
Optionally, the method also includes:
Receive the pictures management request or searching request of user；
Requested according to the pictures management, to the pictures management request it is corresponding, saved figure in the server
Piece is executed to manage and be operated, and it includes modifying operation, delete operation, adding at least one in operation that the management, which operates,；
It is requested according to described search, figure corresponding with described search request is obtained from the picture saved in the server
Piece, and show the picture searched.
Optionally, other attribute informations of the original picture include at least one of:
Type, title, creator's information, works brief introduction.
According to the present invention on the other hand, it additionally provides a kind of digital finger-print based on block chain and deposits card device, comprising:
Computing module, including computing unit and adding unit, the computing unit are suitable for when the original for receiving user's upload
When the author information of wound picture and original picture, is used and preset based on hash algorithm by received original picture and its author information
Calculate the cryptographic Hash of original picture；The adding unit is suitable for original picture addition uplink time stamp；
Generation module is suitable for the original picture received and generates private key and public key pair, using the private key to original figure
The cryptographic Hash of piece is encrypted to generate user's signature, combines the user's signature of generation and the public key to obtain digital finger-print；
Writing module, be suitable for will the original picture it is corresponding including the digital finger-print, cryptographic Hash, author information, on
The card data item of depositing for passing timestamp and user's signature is sent to server, and the original picture is deposited card by the server
Block chain is written in data item.
Optionally, the adding unit is further adapted for:
Receive the trusted timestamp for carrying authoritative institution's signing messages from authoritative institution；
Trusted timestamp based on the authoritative institution is that the original picture adds uplink time stamp.
Optionally, the adding unit is further adapted for:
State that the time determines the original picture uplink time by user, wherein the user states the time by described
Upload user's statement of original picture；
It is that the original picture adds uplink time stamp based on determining original picture uplink time.
Optionally, the write module is further adapted for:
The uplink time stamp deposited in card data item for defining the original picture is upload_time, in the block chain
The timestamp that the block generation of card data item is deposited for being written into original picture is block_timestamp；
Judge whether the uplink time stamp upload_time meets block_timestamp- preset time <upload_
The condition of time <block_timestamp, if so, the original picture is deposited card data item write-in block chain.
Optionally, the write module is further adapted for:
Block chain is written into using preset format in the digital finger-print for including in card data item of depositing of the original picture.
Optionally, the write module is further adapted for:
The original picture is deposited into the digital finger-print for including in card data item with the write-in of original binary character string format
The block chain.
Optionally, the write module is further adapted for:
Base58 coding is carried out to the digital finger-print of original binary character string format, obtains the number of digital DNA format
Fingerprint；
The block chain is written into digital DNA format in the digital finger-print.
Optionally, the write module is further adapted for:
The field of preset quantity is intercepted from the digital finger-print of the number DNA format；
The block chain is written using the field for the preset quantity being truncated to as the digital finger-print.
Optionally, the write module is further adapted for:
The version number for identifying different digital fingerprint preset format is added for the digital finger-print；
The digital finger-print of preset format after addition version number is recorded on the block chain.
Optionally, described device further include:
Determining module, suitable for determining the state of the corresponding digital finger-print of the picture according to the state of the picture, wherein
The state of digital finger-print includes: to wait stateful transaction or complete transaction state；
Adding module is suitable for the digital finger-print and adds identification information corresponding with the digital finger-print state.
Optionally, described device further include:
Receiving module, suitable for receiving other attribute informations for the original picture that the user uploads；
Uploading module, suitable for by described original picture itself, original picture deposit card data item, original picture other category
Property information be uploaded to server, to realize copyright registration to the original picture.
Optionally, described device further includes execution module,
The receiving module is further adapted for receiving the pictures management request of user or searching request；
Execution module, be suitable for according to the pictures management request, to it is corresponding with pictures management request, be stored in
Picture in server, which executes, manages operation, and the management operation includes modification operation, delete operation, adds in operation at least
One；
The execution module, be further adapted for according to described search request, from the picture saved in the server obtain with
Described search requests corresponding picture, and shows the picture searched.
Optionally, other attribute informations of the original picture include at least one of:
Type, title, creator's information, works brief introduction.
According to the present invention in another aspect, additionally providing a kind of computer storage medium, the computer storage medium is deposited
Computer program code is contained, when the computer program code is run on the computing device, the calculating equipment is caused to be held
Digital finger-print based on block chain described in row any embodiment above deposits card method.
Another aspect according to the present invention additionally provides a kind of calculating equipment, comprising: processor；It is stored with computer journey
The memory of sequence code；When the computer program code is run by the processor, the calculating equipment is caused to execute
Digital finger-print based on block chain described in literary any embodiment deposits card method.
In embodiments of the present invention, when the author information of the original picture and original picture that receive user's upload, base
The cryptographic Hash of original picture is calculated using default hash algorithm in received original picture and its author information, and is original picture
Add uplink time stamp.Then, the original picture to receive generates private key and public key pair, using private key to the Kazakhstan of original picture
Uncommon value encryption combines the user's signature of generation and public key to obtain digital finger-print to generate user's signature.In turn, by original picture
The corresponding card data item of depositing including digital finger-print, cryptographic Hash, author information, uplink time stamp and user's signature is sent to clothes
Original picture is deposited card data item write-in block chain by server by business device.It can be seen that when the embodiment of the present invention utilizes credible
Between stamp, digital signature technology, and combine block chain provide proof of ownership and exist prove service, to original image content into
Card is deposited in row registration, generates the unique number DNA (i.e. digital finger-print) of picture works, subsequent number DNA to be applied to version
The scenes such as detection, the transaction of off-line verification, copyright are weighed, and digital finger-print deposits the format readable, extension with higher of card
Property.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows the process signal that the digital finger-print according to an embodiment of the invention based on block chain deposits card method
Figure；
Fig. 2 shows the flow diagrams of the verification method of digital finger-print ownership according to an embodiment of the invention；
Fig. 3 shows the structural representation that the digital finger-print according to an embodiment of the invention based on block chain deposits card device
Figure；And
Fig. 4 shows the structure that the digital finger-print in accordance with another embodiment of the present invention based on block chain deposits card device and shows
It is intended to.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
In order to solve the above technical problems, the embodiment of the invention provides a kind of digital finger-prints based on block chain to deposit card side
Method.Fig. 1 shows the flow diagram that the digital finger-print according to an embodiment of the invention based on block chain deposits card method.Ginseng
See Fig. 1, this method includes at least step S102 to step S106.
Step S102, when the author information of the original picture and original picture that receive user's upload, based on received
Original picture and its author information calculate the cryptographic Hash of original picture using default hash algorithm, and upload for the addition of original picture
Timestamp.
Step S104, the original picture to receive generates private key and public key pair, using private key to the Hash of original picture
Value is encrypted to generate user's signature, combines the user's signature of generation and public key to obtain digital finger-print.
In this step, user's signature is that private key and cryptographic Hash based on original picture generate, and can be used for user
Proof of ownership.Signature algorithm can use RSA (public key encryption algorithm)+SHA256.And the signature contents of the original first edition
Including tri- cryptographic Hash content_hash, uplink time upload_time, author author fields, format is used: standard
Content after JSON format minify, i.e., carry out the content obtained after minimum compression to JSON format content.For example,
Content_hash are as follows: " c92509e0a2cdba2c9ed8a97284d64d785cbc6ff6 ", upload_time are
" 1524128913 ", author be " u4f5c u8005 u540d ".
Step S106, by original picture it is corresponding include digital finger-print, cryptographic Hash, author information, uplink time stamp and
The card data item of depositing of user's signature is sent to server, and original picture is deposited card data item write-in block chain by server.
The embodiment of the present invention utilizes trusted timestamp, digital signature technology, and the proof of ownership for combining block chain to provide
It proves to service with existing, registration is carried out to original image content and deposits card, (i.e. number refers to the unique number DNA of generation picture works
Line), it is subsequent that number DNA can be applied to the scenes such as copyright detection, the transaction of off-line verification, copyright, and digital finger-print
Deposit the format readable, scalability with higher of card.
In addition, the digital finger-print that the embodiment of the present invention can be applied not only to picture deposits card, article, view can also be applied to
The different digital documents such as frequency are deposited in card, and it is poor to efficiently solve the problems, such as to deposit card trellis expansion in the prior art.In the reality
It applies in example, by the way that reliable synopsis, timestamp record can be provided using block chain for content of copyright (such as original picture)
To realize existence proof, and digital signature technology is utilized, the proof of ownership of copyright information can be provided for user.This programme
After realizing that digital finger-print deposits card, subsequent picture copyright authentication, verifying and the process of transaction can be independent of specific flat
Platform is realized by decentralization application (Decentralized application, Dapp).Deposit the data format side of card data item
Just it is retrieved on the chain of block chain, and signature and algorithm can carry out upgrading optimization according to demand, supports copyright detection, trade, receive
It the scenes such as puts increasingly, there is preferable scalability.In addition digital finger-print information is briefly easily differentiated, can facilitate user record and
It propagates, there is stronger readability.
Step S102 is seen above, it in an embodiment of the present invention, can be with when adding uplink time stamp for original picture
It is realized using the following two kinds mode.
The first, is by receiving the trusted timestamp for carrying authoritative institution's signing messages from authoritative institution, from
And the trusted timestamp based on authoritative institution is that original picture adds uplink time stamp, i.e., using trusted timestamp as original figure
The uplink time of piece stabs.
In this approach, if receiving the trusted timestamp from authoritative institution, it is also necessary to which incidentally upper authoritative institution is to this
The signing messages (time_signature) of trusted timestamp.
Second, state that the time determines original picture uplink time by user, and then based on determining original picture
Passing the time is that original picture adds uplink time stamp.Wherein, user states that the time is stated by the user for uploading original picture.
In this approach, user state the time with i.e. be stored into deposit card data item block chain in respective block generate when
Between stamp need to meet following relationship: block when generating m- preset time < picture uplink time <block generate the time.
Based on the second way, the process of depositing card data item write-in block chain of the step S106 by original picture is being executed
In, it can be upload_time, be used for quilt in block chain by defining the uplink time stamp of original picture deposited in card data item
It is block_timestamp that original picture, which is written, and deposits the timestamp of the block generation of card data item, when upload is learnt in judgement
Between stamp upload_time meet block_timestamp- preset time <upload_time <block_timestamp condition
Under, original picture is deposited into card data item write-in block chain.In this embodiment, preset time can be preset any
Time, such as 4 hours, 3 hours, 2 hours etc., the embodiment of the present invention does not do specific restriction to this.
In order to more clearly embody the present invention program deposited on block chain card digital finger-print and original picture other
Card data item is deposited, original picture is now listed in table form and deposits record format on the chain of card data item, as shown in table 1,
| Field name | Type | Maximum length | Remarks |
| dna | string | 32byte | Content of copyright DNA, base58 coding saves |
| content_hash | string | 40byte | Content hash, SHA1 |
| author | string | 128byte | Author's title |
| upload_time | uint256 | 32byte | Uplink time stamp |
| time_signature | string | 350byte | It is optional, authoritative institution's trusted timestamp signature |
| user_signature | string | 350byte | Uploader signature, rsa+sha256, base64 coding save |
Table 1
In table 1, dna indicates digital finger-print, can be and is saved after base58 coding, that is, corresponds to hereinafter
Format 2.The cryptographic Hash content_hash of original picture, the default hash algorithm used can be SHA1 (Secure Hash
Algorithm).User's signature user_signature, i.e. picture uploader signature, the signature algorithm used can be rsa+
Sha256 is stored on block chain after carrying out base64 coding.
Step S106 is seen above, in an embodiment of the present invention, original picture is being deposited into card data item write-in block
It, can also depositing original picture in card data item for convenience to the effective management for depositing card data item of original picture when chain
Including digital finger-print using preset format be written block chain.
In embodiments of the present invention, according to digital finger-print in actual propagation locating different scenes, can be set a variety of pre-
If the writing format of three kinds of digital finger-prints is described below in the digital finger-print of format.
Format 1, original binary character string format.I.e. by original picture deposit card data item in include digital finger-print with
Block chain is written in original binary character string format.For example, digital finger-print is 0x00bb40895f3ad0425a5c85210cb2
fb0329e1b1a4b17a27。
Format 2, number DNA format.The format is that the digital finger-print of original 23byte is converted to base58 coding, should
Coding compresses clear content, eliminates the character for reading and getting up and producing ambiguity, such as 0 (zero) and O (capitalization
O), I (patterns of capitalization of alphabetical i) and l (lowercase versions of alphabetical L) and it is multiple influence to double-click the character of selection, as "/",
"+".To which the format can facilitate user to carry out duplication paste operation on computers, also be avoided that user manually recorded
When there is misspelling.Specifically, when block chain is written with digital DNA format in digital finger-print, first to raw binary
The digital finger-print for according with string format carries out base58 coding, the digital finger-print of digital DNA format is obtained, then by digital finger-print with number
Block chain is written in word DNA format.For example, the digital finger-print of binary format is 0x00bb40895f3ad0425a5c85210cb
2fb0329e1b1a4b17a27 obtains digital DNA form after carrying out base58 coding to the digital finger-print of the format are as follows:
1sph9jUkLLejNE9rbUdgcxSVZLdeLW2。
The abbreviation of format 3, number DNA.The format is the word that preset quantity is intercepted from the digital finger-print of digital DNA format
Section, and block chain is written using the field for the preset quantity being truncated to as digital finger-print.For example, from the digital finger-print of format 2
Preceding 8 letters are intercepted, such as: 1sph9jUk.The digital finger-print content of the format is briefly easily differentiated, and is suitable for user record, is passed
It broadcasts.
In an alternate embodiment of the present invention, original picture is being deposited into the digital finger-print for including in card data item using pre-
If block chain is written in format, it is that block chain is written in which way to efficiently differentiate out digital finger-print, can also is
Digital finger-print adds the version number for identifying different digital fingerprint preset format, and then will add the preset format after version number
Digital finger-print be recorded on block chain.Number can readily be learnt by the version number that identification digital finger-print carries as a result,
Storage format of the word fingerprint on block chain.
In embodiments of the present invention, the digital finger-print of each original picture is globally unique, can be used for picture
Retrieval and certification copyright information, original length 23byte, format can be, and first character section is version number, 20 intermediate
Byte is fingerprint cryptographic Hash, i.e. fingerprint is made a summary, and last 2 bytes can be used as check bit.In this embodiment, fingerprint is made a summary
Algorithm can use ripemd160 (sha256 (pub_key+user_signature)), wherein and pub_key is client public key,
User_signature is user's signature, and "+" indicates character string connection.Check bit algorithm using sha256, (pluck by version number+fingerprint
Want), and preceding 2 bytes are taken using the result that algorithm is calculated.For example, digital finger-print can be with are as follows: 00bb40895f
3ad0425a5c85210cb2fb0329e1b1a4b17a27, wherein the version number of digital finger-print is " 00 ", and fingerprint abstract is
" bb40895f3ad0425a5c85210cb2fb0329e1b1a4b1 ", check bit are " 7a27 ".
In addition, user can also be extended digital finger-print by changing version number, it to be such as used for reference numbers fingerprint
The different conditions of corresponding original picture.
For example, the original picture uploaded if user is added to " licensing mode ", the meeting in the record format of digital finger-print
Increase " licence " correspondence " licensing mode ", as the licensing mode can refer to original picture by its copyright authorization to some
Businessman or some platform etc..For example, digital finger-print it is new format it is as shown in table 2.
| Field name | Type | Maximum length | Remarks |
| dna | string | 32byte | Content of copyright DNA, base58 coding saves |
| content_hash | string | 40byte | Content hash, SHA1 |
| author | string | 128byte | Author's title |
| licence | string | 128byte | Licensing mode |
| upload_time | uint256 | 32byte | Uplink time stamp |
| time_signature | string | 350byte | It is optional, authoritative institution's trusted timestamp signature |
| user_signature | string | 350byte | Uploader signature, rsa+sha256, base64 coding save |
Table 2
In table 2, dna indicates digital finger-print, can be and is saved after base58 coding, that is, corresponds to hereinafter
Format 2.The cryptographic Hash content_hash of original picture, the default hash algorithm used can be SHA1 (Secure Hash
Algorithm).User's signature user_signature, i.e. picture uploader signature, the signature algorithm used can be rsa+
Sha256 is stored on block chain after carrying out base64 coding.
In this embodiment it is assumed that arranging new digital finger-print version number is 01, new digital finger-print example is 01782f
f4354af18e70e1288d3e988beda5f8cd1a32dc7e.Wherein " 01 " is version number, " 782ff4354af18e70e
1288d3e988beda5f8cd1a32 " is fingerprint abstract, and " dc7e " is check bit.Fingerprint ownership is verified subsequent
When, proving program can also detect fingerprint version number, and be verified according to the format of corresponding version number's agreement to fingerprint.
In embodiments of the present invention, by original picture deposit card data item write-in block chain after, original can also be obtained
The state of picture is created, and then determines the shape of the corresponding digital finger-print of original picture according to the state of the original picture got
State.Here the state of original picture can refer to whether original picture was carried out transaction, if original picture was traded,
Its corresponding state be complete transaction state, if original picture was not traded, corresponding state be etc. it is to be transacted
State.Correspondingly, according to original picture state determine its corresponding digital finger-print state also include wait stateful transaction,
Complete transaction state.And then mark corresponding with its state is added for digital finger-print according to the status information of determining digital finger-print
Know information.For example, the state of the corresponding digital finger-print of original picture is to wait stateful transaction, then identification information for its addition can
To be " waiting to be transacted ".In another example the state of the corresponding digital finger-print of original picture is complete transaction state, then added for it
Identification information can be " complete transaction ", the embodiment of the present invention does not do specific restriction to the form of identification information.
In order to more clearly embody the present invention program, now digital finger-print of the invention was generated with a specific embodiment
Journey is introduced.
Step 1, author author (such as author for receiving original picture (such as figure painting schemes) and picture that user uploads
A)。
Step 2, the cryptographic Hash for calculating original picture using SHA1 algorithm based on received original picture and its author information
Content_hash is " af98ba1f374fd283e11bb57e8d99ff94cf609129 ".
Step 3, to receive the trusted timestamp from authoritative institution be 52 minutes 15 points of on March 9th, 2018, the trusted timestamp
The authoritative institution signing messages time_signature of middle carrying is " SQmjLwdKqNqcYyQ56LwCiBMgJ4qFXiFh
6V ... ", the trusted timestamp based on authoritative institution are that original picture addition uplink time stamp upload_time is March 9 in 2018
Days 15 points 52 minutes.
Step 4 generates private key and public key pair for original picture, using private key to cryptographic Hash " af98ba1f374fd283e1
1bb57e8d99ff94cf609129 " encryption, to generate user's signature user_signature " n4g1vCZkEm5hodA2z
l8INf2ZTHRYSwMr...”。
Step 5 combines the user's signature of generation and the public key, to obtain digital finger-print
“1sph9jUkLLejNE9rbUdgcxSVZLdeLW2”。
In embodiments of the present invention, trusted timestamp, digital signature technology can also be utilized, is met in conjunction with the offer of block chain
The proof of ownership of international X9.95 consensus standard and presence prove service, carry out registration to copyright picture (such as original picture) and recognize
Card, to protect original content.When carrying out copyright registration to original picture, it is also desirable to generate or obtain the original being described above
Wound picture deposits card data item, and will deposit in card data item write-in block chain.Here, on the acquisition process for depositing card data item
Detailed introduction has been carried out in text, and details are not described herein again.But it not only to be registered above when actually carrying out copyright registration
The corresponding original picture made referrals to includes that digital finger-print, cryptographic Hash, author information, uplink time stamp and user's signature etc. are deposited
Data item is demonstrate,proved, other attribute informations of original picture can also be registered.For example, receiving the original picture that user uploads first
Other attribute informations.Then by original picture itself, other attribute informations for depositing card data item, original picture of original picture
It is uploaded to server, to realize the copyright registration to original picture.In this embodiment, other attribute informations of original picture
It may include at least one in type, title, creator's information, works brief introduction etc..
As the pictorial information pic info (other attribute informations including picture) for receiving original picture, such as title, class
When type, creator's information, the cryptographic Hash of original picture is calculated.Then by receive the trusted timestamp from authoritative institution with
And authoritative institution's signing messages, the trusted timestamp based on authoritative institution are that original picture adds uplink time stamp.It then is original
It creates picture and generates private key and public key pair, encrypted using cryptographic Hash of the private key to original picture to generate user's signature, by generation
User's signature and public key combine to obtain digital finger-print.And then by other attribute informations of original picture and its deposit card data item write
Enter block chain.And above- mentioned information can also be stored in distributed memory system (such as redis in a manner of kv (Key-Value)
Storage system) in, wherein digital finger-print other attribute informations of original picture, public key, is deposited card data item etc. and is made as Key
For Value value.The storage mode can be convenient it is subsequent to original picture deposit card data item or other attribute informations lookup, i.e.,
Non- chain type offchain inquiry may be implemented.
In embodiments of the present invention, after carrying out copyright registration to original picture, the user for uploading original picture may be used also
The operation such as to be checked, be edited to original picture and its relevant information at any time, to improve the relevant information of original picture.Example
Such as, the pictures management request that can receive user's submission can also receive user and mention to carry out relevant management to original picture
The picture searching of friendship is requested, to search out picture corresponding with searching request from a large amount of pictures of preservation.
When receiving the pictures management request of user's submission, it can request according to pictures management, be asked to pictures management
It asks corresponding, saved picture in the server and execute management operation.Here, management operation may include modification operation, delete
Except operation, addition operation etc..
When receiving the searching request of user's submission, can be serviced according to the searching request received from being stored in
Picture corresponding with the searching request is obtained in picture in device, and shows the picture searched.
Be described above by the digital finger-print of original picture and other deposit card data item write-in block chain process, when with
When family is wanted to prove to certain digital finger-print ownership, also need to verify digital finger-print ownership.The present invention also mentions as a result,
A kind of verification method of digital finger-print ownership is supplied.Referring to fig. 2, the method comprising the steps of S202 to step S208.
Step S202 receives the original picture uploaded by proved recipe user, generates private key and public key pair for original picture, is based on
Private key generates the digital finger-print of original picture.
Digital finger-print and public key are sent to authentication server by step S204, are inquired on block chain by authentication server
With the presence or absence of digital finger-print corresponding with received digital finger-print, if so, verifying digital finger-print is effective.
Step S206 receives the verifying text from authentication server, calculates verifying text using default hash algorithm
Cryptographic Hash is encrypted using cryptographic Hash of the private key to verifying text, generates the user's signature of verifying text.
The user's signature for verifying text is sent to authentication server by step S208, by authentication server using public key to testing
The user's signature decryption for demonstrate,proving text, if successful decryption, determining has ownership by digital finger-print of the proved recipe user to original picture.
Step S204 is seen above, in an embodiment of the present invention, since the digital finger-print of picture can use a variety of lattice
Block chain is written in formula, therefore, when authentication server is inquired on block chain with the presence or absence of number corresponding with received digital finger-print
When word fingerprint, it is also necessary to first identify format information corresponding to the digital finger-print of preset format on the block chain.If being based on
The format information determines that the format of the digital finger-print of the original picture is different from the preset format, and needing will be described original
The digital finger-print of picture is converted to the digital finger-print with the preset format same format, is then existed again by the authentication server
Inquiry is with the presence or absence of digital finger-print corresponding with the digital finger-print after format conversion on block chain, and if it exists, then verifies the number
Word fingerprint is effective.
The existence of digital finger-print not only can be effectively verified using the digital finger-print verification mode of the present invention program, also
Its user's ownership can be verified, i.e., provides the proof of ownership of picture copyright information by digital signature technology for user.Into
One step, the entire verification process of this programme can pass through decentralization application independent of particular platform
(Decentralized application, Dapp) can conveniently realize verifying.
Based on the same inventive concept, the embodiment of the invention also provides a kind of digital finger-prints based on block chain to deposit card dress
It sets.Fig. 3 shows the structural schematic diagram that the digital finger-print according to an embodiment of the invention based on block chain deposits card device.Ginseng
See Fig. 3, it includes computing module 310, generation module 320 and writing module that the digital finger-print based on block chain, which deposits card device 300,
330。
The digital finger-print based on block chain for now introducing the embodiment of the present invention deposits card and fills 300 each composition or the function of device
And the connection relationship between each section:
Computing module 310, including computing unit 311 and adding unit 312, computing unit 311, which is suitable for working as, receives user
When the author information of the original picture and original picture that upload, breathed out based on received original picture and its author information using default
Uncommon algorithm calculates the cryptographic Hash of original picture；Adding unit 312 is suitable for original picture addition uplink time stamp；
Generation module 320 is coupled with computing module 310, is suitable for the original picture received and is generated private key and public key pair,
It is encrypted using cryptographic Hash of the private key to original picture to generate user's signature, combines the user's signature of generation and public key and counted
Word fingerprint；
Writing module 330 is coupled with generation module 320, is suitable for original picture is corresponding including digital finger-print, Hash
Value, author information, uplink time stamp and user's signature card data item of depositing be sent to server, by server by original picture
Deposit card data item write-in block chain.
In an embodiment of the present invention, adding unit 312 is further adapted for, and receives and carries authority's machine from authoritative institution
The trusted timestamp of structure signing messages, the trusted timestamp based on authoritative institution are that original picture adds uplink time stamp.
In an embodiment of the present invention, adding unit 312 is further adapted for, and states that the time determines that original picture uploads by user
Time, wherein user states that the time is stated by the user for uploading original picture, then, when being uploaded based on determining original picture
Between be original picture addition uplink time stamp.
In an embodiment of the present invention, writing module 330 is further adapted for, and defines the upload of original picture deposited in card data item
Timestamp is upload_time, the timestamp in block chain for being written into the block generation that original picture deposits card data item is
block_timestamp.Judge uplink time stamp upload_time whether meet block_timestamp- preset time <
The condition of upload_time <block_timestamp, if so, original picture is deposited card data item write-in block chain.
In an embodiment of the present invention, writing module 330 is further adapted for, and original picture is deposited the number for including in card data item
Block chain is written using preset format in word fingerprint.
In an embodiment of the present invention, writing module 330 is further adapted for, and original picture is deposited the number for including in card data item
Block chain is written with original binary character string format in word fingerprint.
In an embodiment of the present invention, writing module 330 is further adapted for, to the digital finger-print of original binary character string format
Base58 coding is carried out, the digital finger-print of digital DNA format is obtained, block chain is written into digital DNA format in digital finger-print.
In an embodiment of the present invention, writing module 330 is further adapted for, and intercepts from the digital finger-print of digital DNA format pre-
If the field of quantity, block chain is written using the field for the preset quantity being truncated to as digital finger-print.
In an embodiment of the present invention, writing module 330 is further adapted for, and refers to for digital finger-print addition for identifying different digital
The version number of line preset format.The digital finger-print of preset format after addition version number is recorded on block chain.
The embodiment of the invention also provides another kinds to deposit card device based on the digital finger-print of block chain.Fig. 4 shows basis
The digital finger-print based on block chain of another embodiment of the present invention deposits the structural schematic diagram of card device.Referring to fig. 4, it is based on block
The digital finger-print of chain deposits card device 300 other than comprising above-mentioned each module, further include determining module 340, adding module 350,
Receiving module 360, uploading module 370, execution module 380.
Determining module 340 is coupled with writing module 330, determines that the corresponding number of picture refers to suitable for the state according to picture
The state of line, wherein the state of digital finger-print includes waiting stateful transaction or complete transaction state.
Adding module 350 is coupled with determining module 340, and it is corresponding with digital finger-print state to be suitable for digital finger-print addition
Identification information.
Receiving module 360, suitable for receiving other attribute informations for the original picture that user uploads.
Uploading module 370 couples respectively with writing module 330 and receiving module 360, is suitable for original picture itself, original
Data item is demonstrate,proved in depositing for wound picture, other attribute informations of original picture are uploaded to server, to realize the copyright to original picture
Registration.
In this embodiment, receiving module 360 is further adapted for, and receives the pictures management request or searching request of user.
Execution module 380 is coupled with receiving module 360, be suitable for according to pictures management request, to pictures management request pair
Picture answering, having saved in the server executes management operation, and management operation includes modification operation, delete operation, addition behaviour
At least one of in work.
In addition, execution module 380 is further adapted for, according to searching request, obtained from the picture saved in the server with
The corresponding picture of searching request, and show the picture searched.
In an embodiment of the present invention, other attribute informations of original picture include picture type, title, creator's letter
At least one of in breath, works brief introduction etc..
The present invention also provides a kind of computer storage medium, computer storage medium is stored with computer program code,
When computer program code is run on the computing device, cause calculate equipment execute in any embodiment above based on block
The digital finger-print of chain deposits card method.
The present invention also provides a kind of calculating equipment, including processor；It is stored with the memory of computer program code；When
When computer program code is run by processor, calculating equipment is caused to execute the number based on block chain in any embodiment above
Word fingerprint deposits card method.
According to the combination of any one above-mentioned preferred embodiment or multiple preferred embodiments, the embodiment of the present invention can reach
It is following the utility model has the advantages that
In embodiments of the present invention, when the author information of the original picture and original picture that receive user's upload, base
The cryptographic Hash of original picture is calculated using default hash algorithm in received original picture and its author information, and is original picture
Add uplink time stamp.Then, the original picture to receive generates private key and public key pair, using private key to the Kazakhstan of original picture
Uncommon value encryption combines the user's signature of generation and public key to obtain digital finger-print to generate user's signature.In turn, by original picture
The corresponding card data item of depositing including digital finger-print, cryptographic Hash, author information, uplink time stamp and user's signature is sent to clothes
Original picture is deposited card data item write-in block chain by server by business device.It can be seen that when the embodiment of the present invention utilizes credible
Between stamp, digital signature technology, and combine block chain provide proof of ownership and exist prove service, to original image content into
Card is deposited in row registration, generates the unique number DNA (i.e. digital finger-print) of picture works, subsequent number DNA to be applied to version
The scenes such as detection, the transaction of off-line verification, copyright are weighed, and digital finger-print deposits the format readable, extension with higher of card
Property.
It is apparent to those skilled in the art that the specific work of the system of foregoing description, device and unit
Make process, can refer to corresponding processes in the foregoing method embodiment, for brevity, does not repeat separately herein.
In addition, each functional unit in each embodiment of the present invention can be physically independent, can also two or
More than two functional units integrate, and can be all integrated in a processing unit with all functional units.It is above-mentioned integrated
Functional unit both can take the form of hardware realization, can also be realized in the form of software or firmware.
Those of ordinary skill in the art will appreciate that: if the integrated functional unit is realized and is made in the form of software
It is independent product when selling or using, can store in a computer readable storage medium.Based on this understanding,
Technical solution of the present invention is substantially or all or part of the technical solution can be embodied in the form of software products,
The computer software product is stored in a storage medium comprising some instructions, with so that calculating equipment (such as
Personal computer, server or network equipment etc.) various embodiments of the present invention the method is executed when running described instruction
All or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM), random access memory
Device (RAM), the various media that can store program code such as magnetic or disk.
Alternatively, realizing that all or part of the steps of preceding method embodiment can be (all by the relevant hardware of program instruction
Such as personal computer, the calculating equipment of server or network equipment etc.) it completes, described program instruction can store in one
In computer-readable storage medium, when described program instruction is executed by the processor of calculating equipment, the calculating equipment is held
The all or part of the steps of row various embodiments of the present invention the method.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: at this
Within the spirit and principle of invention, it is still possible to modify the technical solutions described in the foregoing embodiments or right
Some or all of the technical features are equivalently replaced；And these are modified or replaceed, and do not make corresponding technical solution de-
From protection scope of the present invention.
Claims (10)
1. a kind of digital finger-print based on block chain deposits card method, comprising:
When the author information of the original picture and original picture that receive user's upload, based on received original picture and its work
Person's information calculates the cryptographic Hash of original picture using default hash algorithm, and adds uplink time stamp for original picture；
Original picture to receive generates private key and public key pair, is encrypted using cryptographic Hash of the private key to original picture with life
At user's signature, combine the user's signature of generation and the public key to obtain digital finger-print；
The original picture is corresponding including the digital finger-print, cryptographic Hash, author information, uplink time stamp and user's label
The card data item of depositing of name is sent to server, and the original picture is deposited card data item write-in block chain by the server.
2. according to the method described in claim 1, wherein, described is that original picture adds uplink time stamp, comprising:
Receive the trusted timestamp for carrying authoritative institution's signing messages from authoritative institution；
Trusted timestamp based on the authoritative institution is that the original picture adds uplink time stamp.
3. method according to claim 1 or 2, wherein described to add uplink time stamp for original picture, comprising:
State that the time determines the original picture uplink time by user, wherein the user states the time by the upload
The user of original picture states；
It is that the original picture adds uplink time stamp based on determining original picture uplink time.
4. method according to claim 1-3, wherein the original picture is deposited card data item write-in block
Chain, comprising:
The uplink time stamp deposited in card data item for defining the original picture is upload_time, is used in the block chain
Being written into original picture and depositing the timestamp of the block generation of card data item is block_timestamp；
Judge whether the uplink time stamp upload_time meets block_timestamp- preset time <upload_time
The condition of <block_timestamp, if so, the original picture is deposited card data item write-in block chain.
5. method according to claim 1-4, wherein the original picture is deposited card data item write-in block
Chain, comprising:
Block chain is written into using preset format in the digital finger-print for including in card data item of depositing of the original picture.
6. method according to claim 1-5, wherein include by depositing in card data item for the original picture
Block chain is written using preset format in digital finger-print, comprising:
The original picture is deposited into the digital finger-print for including in card data item described in the write-in of original binary character string format
Block chain.
7. method according to claim 1-6, wherein include by depositing in card data item for the original picture
Block chain is written using preset format in digital finger-print, comprising:
Base58 coding is carried out to the digital finger-print of original binary character string format, obtains the digital finger-print of digital DNA format；
The block chain is written into digital DNA format in the digital finger-print.
8. a kind of digital finger-print based on block chain deposits card device, comprising:
Computing module, including computing unit and adding unit, the computing unit are suitable for when the original figure for receiving user's upload
It is former using default hash algorithm calculating based on received original picture and its author information when the author information of piece and original picture
Create the cryptographic Hash of picture；The adding unit is suitable for original picture addition uplink time stamp；
Generation module is suitable for the original picture received and generates private key and public key pair, using the private key to original picture
Cryptographic Hash is encrypted to generate user's signature, combines the user's signature of generation and the public key to obtain digital finger-print；
Writing module, be suitable for will the original picture it is corresponding include the digital finger-print, cryptographic Hash, author information, upload when
Between stab and user's signature deposit card data item be sent to server, the original picture is deposited into card data by the server
Item write-in block chain.
9. a kind of computer storage medium, the computer storage medium is stored with computer program code, when the computer
When program code is run on the computing device, the calculating equipment perform claim is caused to require 1-7 described in any item based on area
The digital finger-print of block chain deposits card method.
10. a kind of calculating equipment, comprising: processor；It is stored with the memory of computer program code；When the computer program
When code is run by the processor, the calculating equipment perform claim is caused to require 1-7 described in any item based on block chain
Digital finger-print deposit card method.
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