CN109345223A - Block chain copyrighted digital content restoration methods and block chain operating platform - Google Patents
Block chain copyrighted digital content restoration methods and block chain operating platform Download PDFInfo
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/107—License processing; Key processing
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Abstract
The invention discloses a kind of block chain copyrighted digital content restoration methods and block chain operating platform, the described method comprises the following steps: receiving the recovery request for the target copyrighted digital content that user issues；The public key information of the user is inquired, and inquires payment bill corresponding with the public key of the user, the copyright of the target copyrighted digital content has been possessed with the determination user；Confirm the recovery request, receive the predetermined quantity GAS of user's payment, and payment bill is broadcast on block chain；After block chain confirms the payment bill, encrypted digital content and corresponding public key are provided to the user, wherein the encrypted digital content is corresponding with the target copyrighted digital content.It can be realized the recovery to block chain copyrighted digital content using the present invention.
Description
Technical field
The present invention relates to a kind of block chain copyrighted digital content restoration methods and block chain operating platform.
Background technique
Currently, people use DRM (Data Rights Management, digital copyright management) technology in number mostly
Appearance is protected.DRM technology is a kind of technology for reinforce to digitized copyright protection.DRM technology can be applicable to electronics
Book, electronic document, audio frequency and video Streaming Media, graph image, mobile multimedia etc., core are digital encryption and permission control
System, the former can prevent the illegal propagation of digital content, and the latter can limit the mode using digital content.
But since DRM technology uses traditional centralized management system, by digital content, copyright side, publisher, make
It is stored in digital copyright management DRM system with information such as sides, the safety of data storage is lower, damages in case of DRM system
The case where bad or loss of data, it will lead to the loss of copyright information and copyrighted digital content, if the number in copyright owning side's hand
Word content is damaged or loses, and will be unable to obtain the chance that digital content is restored, compromises the interests of copyright owning side.
Summary of the invention
It, can be with using this method user in view of this, the present invention proposes a kind of block chain copyrighted digital content restoration methods
Conveniently realize the recovery to copyrighted digital content is gathered around.
The present invention also proposes a kind of block chain operating platform, is able to carry out above-mentioned block chain copyright number by the operating platform
Word content recovery method.
The present invention provides a kind of block chain copyrighted digital content restoration methods, the described method comprises the following steps that: S101 connects
Receive the recovery request for the target copyrighted digital content that user issues；S102 inquires the public key information of the user, and inquiry and institute
The corresponding payment bill of public key for stating user, the copyright of the target copyrighted digital content has been possessed with the determination user；
S103 confirms the recovery request, receives the predetermined quantity GAS of user's payment, and payment bill is broadcast on block chain；
S104 provides encrypted digital content and corresponding to the user after block chain confirms the payment bill
Public key, wherein the encrypted digital content is corresponding with the target copyrighted digital content.
Block chain copyrighted digital content restoration methods according to the present invention, it is preferable that after step s 102, described
Method further include: inquiry encrypted digital content corresponding with the target copyrighted digital content whether there is, if described
Encrypted digital content exists, and enters step S103；If the encrypted digital content is not present, the recovery is asked
It asks and not confirms.
The present invention also provides a kind of block chain operating platforms comprising: receiving processing module, for receiving user's sending
The recovery request of target copyrighted digital content；Query processing module, for inquiring the public key information of the user, and inquiry and institute
The corresponding payment bill of public key for stating user, the copyright of the target copyrighted digital content has been possessed with the determination user；
Confirm processing module, for confirming the recovery request, receives the predetermined quantity GAS of user's payment, and payment bill is broadcasted
Onto block chain；Content processing module, for being provided to the user encrypted after block chain confirms the payment bill
Digital content and corresponding public key, wherein the encrypted digital content is opposite with the target copyrighted digital content
It answers；Interface module, for providing platform interface corresponding with block chain node interface；Memory module, for being grasped to block chain
The data for making platform are cached.
Block chain operating platform according to the present invention, it is preferable that further include: judging treatmenting module, for inquire with
The corresponding encrypted digital content of the target copyrighted digital content whether there is, if the encrypted digital content is deposited
Triggering the confirmation processing module.
The present invention also provides a kind of block chain copyrighted digital content restoration methods, the described method comprises the following steps: S201,
Target copyright information is inquired on block chain operating platform, where the target copyright information includes target copyrighted digital content
Nodal information；S202 issues target to block chain operating platform based on the target copyright information and owned public key
The recovery request of copyrighted digital content；S203 is operated after block chain operating platform confirms the recovery request to block chain
Platform pays predetermined quantity GAS, and payment bill is broadcast on block chain；S204 confirms the payment bill in block chain
Later, encrypted digital content and corresponding public key are downloaded from block chain operating platform, wherein the encrypted number
Word content is corresponding with the target copyrighted digital content；S205, by owned private key and with it is described encrypted
The encrypted digital content is decrypted in the corresponding public key of digital content.
Block chain copyrighted digital content restoration methods according to the present invention, it is preferable that use DH (Diffie-
Hellman, diffie-hellman are graceful) the encrypted digital content is decrypted in Diffie-Hellman.
The present invention also provides a kind of block chain copyrighted digital content restoration methods, which comprises S301, user A to
Block chain operating platform inquires target copyright information, and owned exchange key pair EKa is provided to block chain operating platform
In public key PKa；Wherein target version power information includes the node where encrypted digital content and copyright owner
Information；S302, block chain operating platform is from block chain querying node and obtains the user with the encrypted digital content
B notifies the public key PKa of the encrypted digital content and user A to user B；S303, user B use owned
The encrypted decrypted digital content that private key distributes block chain operating platform, obtains original digital content；S304, user
B generates exchange key pair EKb, and obtains encryption key Kb using the public key PKa of private key and user A in EKb, uses Kb pairs
The original digital content is encrypted, and the public key PKb of encrypted content and user B is submitted to the operation of block chain and is put down
Platform；S305, block chain operating platform notify user A to download the encrypted content and the public key PKb of user B；S306 is used
The public key PKb of private key and user B of the family A based on own key centering obtains clear crytpographic key Ka, and is solved using clear crytpographic key Ka
Close original digital content out, completes the recovery of copyrighted digital content；Wherein Ka is consistent with Kb.
The present invention also provides a kind of block chain copyrighted digital content restoration methods, the described method comprises the following steps: S401,
The recovery request for the target copyrighted digital content that user issues is received by block chain operating platform, and inquires the public affairs of the user
Key information；S402 inquires payment bill corresponding with the public key of the user, and with determination, the user has possessed the target
The copyright of copyrighted digital content；S403 confirms the recovery request, receives the predetermined quantity GAS of user's payment, and branch is paid a bill
It is singly broadcast on block chain；S404 provides encrypted number to the user after block chain confirms the payment bill
Content and corresponding public key, wherein the encrypted digital content is corresponding with the target copyrighted digital content；Its
In, the block chain operating platform includes: digital content receiving module, for receiving digital content summary info and encrypted
Digital content；Wherein the digital content summary info includes the corresponding cryptographic Hash of original digital content；The encrypted number
Word content refers to the content obtained after original digital content encryption；The original digital content includes one or more is able to carry out
The file content of digitized processing；Digital content release module, for by the digital content summary info and described encrypted
Digital content issue on block chain；Copyrighted digital content enquiry module, for inquiring in the number issued on block chain
The copyright information of appearance；Wherein the copyright information of the digital content includes: digital content summary info, block transaction summarization information
And/or block transaction account book；Wherein the block transaction summarization information include current block All Activity record and it is previous
The corresponding block transaction summarization information of block；The block transaction account book includes according to the multiple account books for generating time sequencing arrangement
Block, each account book block include block transaction summarization information corresponding with the account book block；Wherein the transaction record includes the branch
It pays one's bill；Receiving processing module, the recovery request of the target copyrighted digital content for receiving user's sending；Query processing mould
Block for inquiring the public key information of the user, and inquires payment bill corresponding with the public key of the user, described in determination
User has possessed the copyright of the target copyrighted digital content；Confirm processing module, for confirming the recovery request, receives
The predetermined quantity GAS of user's payment, and payment bill is broadcast on block chain；Content processing module, for true in block chain
Recognize after the payment bill, encrypted digital content and corresponding public key is provided to the user, wherein the warp
The digital content of encryption is corresponding with the target copyrighted digital content；Interface module, for providing and block chain node interface
Corresponding platform interface；Memory module is cached for the data to block chain operating platform.
The present invention also provides a kind of block chain copyrighted digital content restoration methods, the described method comprises the following steps: S501,
The recovery request for the target copyrighted digital content that user issues is received by block chain operating platform, and inquires the public affairs of the user
Key information；S502 inquires payment bill corresponding with the public key of the user, and with determination, the user has possessed the target
The copyright of copyrighted digital content；S503 confirms the recovery request, receives the predetermined quantity GAS of user's payment, and branch is paid a bill
It is singly broadcast on block chain；S504 provides encrypted number to the user after block chain confirms the payment bill
Content and corresponding public key, wherein the encrypted digital content is corresponding with the target copyrighted digital content；Its
In, the block chain operating platform includes: digital content receiving module, for receiving digital content summary info and encrypted
Digital content；Wherein the digital content summary info includes the corresponding cryptographic Hash of original digital content；The encrypted number
Word content refers to the content obtained after original digital content encryption；The original digital content includes one or more is able to carry out
The file content of digitized processing；Digital content release module, for by the digital content summary info and described encrypted
Digital content issue on block chain；Copyrighted digital content enquiry module, for inquiring in the number issued on block chain
The copyright information of appearance；Wherein the copyright information of the digital content includes: digital content summary info, block transaction summarization information
And/or block transaction account book；Wherein the block transaction summarization information include current block All Activity record and it is previous
The corresponding block transaction summarization information of block；The block transaction account book includes according to the multiple account books for generating time sequencing arrangement
Block, each account book block include block transaction summarization information corresponding with the account book block；Wherein the transaction record includes the branch
It pays one's bill；Receiving processing module, the recovery request of the target copyrighted digital content for receiving user's sending；Query processing mould
Block for inquiring the public key information of the user, and inquires payment bill corresponding with the public key of the user, described in determination
User has possessed the copyright of the target copyrighted digital content；Confirm processing module, for confirming the recovery request, receives
The predetermined quantity GAS of user's payment, and payment bill is broadcast on block chain；Content processing module, for true in block chain
Recognize after payment bill, encrypted digital content and corresponding public key is provided to the user, wherein described encrypted
Digital content it is corresponding with the target copyrighted digital content；Interface module, it is opposite with block chain node interface for providing
The platform interface answered；Memory module is cached for the data to block chain operating platform；Also, the block chain includes
First node, the first node is for storing the digital content summary info, the encrypted digital content, the area
Block transaction summarization information and block transaction account book.
Block chain copyrighted digital content restoration methods according to the present invention, it is preferable that the block chain further includes
Two nodes and/or third node, second node is for storing the digital content summary info, the block transaction summarization information
With block transaction account book；Third node is for storing the digital content summary info and block transaction summarization letter
Breath.
It loses or damages if user will gather around copyrighted digital content file, utilize block chain copyright number of the invention
Word content recovery method can be realized the downloading again to the digital content, to realize the recovery to copyrighted digital content.Benefit
With block chain operating platform of the invention, user can easily carry out operation and the content down operation of this recovery request.
Further, also the digital content in recovery operation is protected using suitable encryption/decryption algorithm, safe operation process
Property is higher.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of block chain copyrighted digital content restoration methods of the invention.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, but protection scope of the present invention is not limited to
This.
Heretofore described block chain copyrighted digital content refers to carrying out on block chain in the number of copyright distribution
Hold.Block chain copyrighted digital content restoration methods of the invention operate realization by block chain operating platform by user, the present invention
Block chain operating platform there is certain data-handling capacity and data storage capacities, can be considered a kind of user terminal, can be with
It is realized using computer, other terminal (such as intelligent terminals, intelligence equipped with caching and computing chip can also be passed through
Mobile phone, tablet computer etc.) it realizes.Known block chain can be used in the block chain, and the number of the embodiment of the present invention can also be used
Letter weighs block chain.
It is described in detail individually below.
<block chain copyrighted digital content restoration methods>
After buying block chain copyrighted digital content, if occur in use digital content lose or due to
Damage leads to not the case where continuing to use, and in the case where still possessing the copyright of the digital content, utilizes area of the invention
Block chain copyrighted digital content restoration methods, a small amount of GAS can be paid to operating platform and re-download and decrypt digital content into
It exercises and uses.
From the point of view of specific, user A inquires target copyright information on block chain operating platform, is based on the target copyright information
And owned public key, the recovery request of target copyrighted digital content is issued to block chain operating platform；The target
Copyright information includes the nodal information where target copyrighted digital content；Block chain operating platform receives the mesh of user A sending
After the recovery request for marking copyrighted digital content, the public key information of user A is inquired, and inquire branch corresponding with the public key of user A
It pays one's bill, to determine that user A has possessed the copyright of the target copyrighted digital content.
Later, block chain operating platform confirms the recovery request, and user A confirms the recovery in block chain operating platform
After request, predetermined quantity GAS is paid to block chain operating platform, block chain operating platform receives the predetermined number of user's payment
After measuring GAS, payment bill is broadcast on block chain；After block chain confirms the payment bill, the operation of block chain is flat
Platform provides encrypted digital content and corresponding public key to user A, for user A from the downloading of block chain operating platform through adding
Close digital content and corresponding public key, wherein encrypted digital content is corresponding with target copyrighted digital content.Under
After load, user A is by owned private key and public key corresponding with the encrypted digital content, to encrypted
Digital content is decrypted.
Wherein, DH (Diffie-Hellman, one Herman of diffie) Diffie-Hellman can be used to described encrypted
Digital content is decrypted.It is encrypted using existing DH Diffie-Hellman, treatment process is no longer superfluous herein
It states.
In above process, it after determining the copyright that user A has possessed the target copyrighted digital content, can also inquire
Encrypted digital content corresponding with target copyrighted digital content whether there is, if it does, continuing to execute subsequent processing；Such as
Fruit is not present, then not confirms to recovery request, digital content restores failure.
<block chain operating platform>
Corresponding, the of the invention block chain operating platform of above-mentioned block chain copyrighted digital content restoration methods can include:
Receiving processing module, query processing module, confirmation processing module and content processing module.
Specifically, receiving processing module can receive the recovery request for the target copyrighted digital content that user issues, inquiry
Processing module can inquire the public key information of the user, and inquire payment bill corresponding with the public key of the user, with determination
The user has possessed the copyright of the target copyrighted digital content；Confirmation processing module can confirm the recovery request, connect
The predetermined quantity GAS of user's payment is received, and payment bill is broadcast on block chain；Content processing module can confirm in block chain
After the payment bill, encrypted digital content and corresponding public key are provided to the user, wherein described through adding
Close digital content is corresponding with the target copyrighted digital content.
In addition, block chain operating platform further includes judging treatmenting module, interface module and memory module, wherein at judgement
Reason module, which can be used for inquiring encrypted digital content corresponding with the target copyrighted digital content, whether there is, if described
Encrypted digital content exists, and triggers the confirmation processing module；Interface module can provide opposite with block chain node interface
The platform interface answered；Memory module can cache the data of block chain operating platform.
Further, block chain operating platform of the invention can also receive user upload digital content and will be in number
Hold publication on block chain, passes through digital content receiving module, digital content release module, copyrighted digital content enquiry module
It realizes.
Wherein, digital content receiving module can receive digital content summary info and encrypted digital content；Wherein institute
Stating digital content summary info includes the corresponding cryptographic Hash of original digital content；The encrypted digital content refers to original number
The content obtained after word content-encrypt；The original digital content includes one or more files for being able to carry out digitized processing
Content；
Digital content release module can exist the digital content summary info and the encrypted digital content publication
On block chain；
Copyrighted digital content enquiry module can inquire the copyright information for the digital content issued on block chain；It is wherein described
The copyright information of digital content includes: digital content summary info, block transaction summarization information and/or block transaction account book；Its
Described in block transaction summarization information include that the All Activity record of current block and the corresponding block transaction of previous block are plucked
Want information；Block transaction account book include according to the multiple account book blocks for generating time sequencing arrangement, each account book block include with
The corresponding block transaction summarization information of the account book block；Wherein the transaction record includes the payment bill.
<block chain>
Block chain of the invention may include full dose information storage node (Full Node), store the digital content thereon
Summary info, the encrypted digital content, the block transaction summarization information and block transaction account book.
Block chain of the invention may also include summary info memory node (Digest Node), store the number thereon
Synopsis information, the block transaction summarization information and block transaction account book
Block chain of the invention may also include query information memory node (Query Node), be stored in the number thereon
Hold summary info and the block transaction summarization information.
In certain embodiments of the present invention, block chain and operating platform support ether mill ERC20 Token standard.
For the digital content summary info, the encrypted digital content, described stored on block chain node
Block transaction summarization information and block transaction account book, are described in detail individually below.
<digital content summary info>
The digital content summary info refers to the cryptographic Hash of not encrypted original digital content, the original figure
Content includes one or more file contents for being able to carry out digitized processing, such as: in audio file content, video file
Appearance, e-book file content etc..
In a preferred embodiment of the invention, the digital content summary info includes the original calculated using SHA256 function
The cryptographic Hash of beginning digital content, the cryptographic Hash are also referred to as " SHA256 abstract ", by the SHA256 abstract conduct of original digital content
Its digital content summary info.Calculating process is described step by step below:
The entity file of original digital content is divided into N segment file by S101；
S102 is made a summary using the SHA256 that SHA256 function calculates each segment file in the N segment file, is obtained N number of
SHA256 abstract；
N number of SHA256 abstract is combined, obtains a string of data splittings by S103；
S104 is made a summary using the SHA256 that SHA256 function calculates the data splitting, using calculated result as the original
The digital content summary info of beginning digital content.
Wherein, when S101 entity file divides, the amount of capacity of the preceding N-1 segment file in the N segment file can be enabled
It is identical, for example, every segment length is taken as 1MB for preceding N-1 segment file, if N sections of i.e. final stages are also 1MB, obtain N
The identical file of Duan great little；If N sections of i.e. final stages take its physical length, N segment file can be obtained less than 1MB, wherein
Capacity of the capacity of final stage file less than N-1 segment file.
Since SHA256 abstract has uniqueness, it is used to uniquely identify the copyright of digital content.In subsequent version
In power transaction, after copyright recipient obtains actual digital content, it can be made a summary by its SHA256 to verify in the number
Whether hold is correct content of copyright.
<encrypted digital content>
The encrypted digital content refers to obtaining after the original digital content of unencryption is encrypted
Content.Rights issuer issues encrypted digital content on block chain, when copyright recipient obtains encrypted number
It after word content, needs that it is decrypted, actual digital content can be obtained.
In a preferred embodiment of the invention, as follows to the encryption process of original digital content: to be handed over using DH key
Scaling method generates a pair of of unsymmetrical key for original digital content, and the unsymmetrical key includes public key and private key；Using generation
The private key original digital content is encrypted, encrypted digital content can be obtained, for being published to block chain
On.
For the encrypted digital content being published on block chain, copyright person can be used one's own private key and carry out
Decryption, in addition to this, all other men on block chain can not decrypt, thus the digital content shape to publication on block chain
At protection.
<block transaction summarization information>
Block transaction summarization information refers to the transaction summarization information of current block, the All Activity containing current block
The transaction summarization information of record and previous block.In a preferred embodiment of the invention, the calculating of SHA256 function can be used to obtain
The block transaction summarization information is obtained, calculating process is described as follows:
Assuming that current block has 3 transaction records, respectively t1, t2 and t3；The transaction summarization information of previous block is h1,
Random number is r；
The then transaction summarization information h of current block are as follows:
H=SHA256 (t1, t2, t3, h1, r)；
Wherein, transaction record described in each of them (such as t1, t2 or t3) include copyright transferor address information,
Copyright purchaser address information and copyright trading quantity；Preferably, it may also include the signing messages of copyright transferor.
Wherein, random number r is needed by selecting, so that before the transaction summarization information h for the current block being calculated
20bits (i.e. preceding 20 bits) all 0.Here, the needs of selecting of random number r just can determine that by a large amount of trial, because
This its effect is that numerous nodes can be allowed to simultaneously participate in selecting for random number r, is packaged block account book to guarantee that each node has
Same right, but also the block account book information being packaged dropped to by the subsequent probability distorted it is extremely low.
<block transaction account book>
The block transaction account book includes multiple account book blocks, and each account book block is corresponding with a block on block chain, often
A account book block includes the block transaction summarization information of the block, and each account book block is arranged according to their generation time sequencing.By
The transaction record of all copyright tradings in block transaction summarization information comprising the block, therefore, the block transaction account book
The transaction record of all copyright tradings on block chain is contained, is the set of all copyright trading records on block chain.
It should be noted that possessing institute thereon since encrypted digital content is stored in full dose information storage node
Some data relate only to the full dose information storage node of block chain in the recovery process for carrying out copyrighted digital content.Other
Bill inquiry, inquiry into balance and transaction etc. of the node for user.
Embodiment 1
Copyright recovery can be carried out using block chain copyrighted digital content restoration methods of the invention.User A inherently one
The video file of part copyright, but since file is lost or damages, lead to not continue to use, copyright is described below and restored
Journey.
1. user A inquires target copyright information to block chain operating platform, and provides itself to block chain operating platform and gather around
Some exchanges the public key PKa in key pair EKa；Wherein the target version power information includes the section where encrypted digital content
The information of point and copyright owner；
2. block chain operating platform is from block chain querying node and obtains the user with the encrypted digital content
B notifies the public key PKa of the encrypted digital content and user A to user B；
3. the encrypted digital content solution that user B uses owned private key to distribute block chain operating platform
It is close, obtain original digital content；
4. user B generates exchange key pair EKb, and is encrypted using the public key PKa of private key and user A in EKb
Key Kb encrypts the original digital content using Kb, and the public key PKb of encrypted content and user B is mentioned
Give block chain operating platform；
5. block chain operating platform notifies user A to download the encrypted content and the public key PKb of user B；
6. the public key PKb of private key and user B of the user A based on own key centering obtains clear crytpographic key Ka (Ka=
Kb original digital content), and using clear crytpographic key Ka is decrypted, completes the recovery of copyrighted digital content.
Present invention is not limited to the embodiments described above, without departing from the essence of the present invention, this field skill
Any deformation, improvement, the replacement that art personnel are contemplated that each fall within the scope of the present invention.
Claims (10)
1. a kind of block chain copyrighted digital content restoration methods, which is characterized in that the described method comprises the following steps:
S101 receives the recovery request for the target copyrighted digital content that user issues；
S102 inquires the public key information of the user, and inquires payment bill corresponding with the public key of the user, to determine
State the copyright that user has possessed the target copyrighted digital content；
S103 confirms the recovery request, receives the predetermined quantity GAS of user's payment, and payment bill is broadcast to block chain
On；
S104 provides encrypted digital content and right with it to the user after block chain confirms the payment bill
The public key answered, wherein the encrypted digital content is corresponding with the target copyrighted digital content.
2. block chain copyrighted digital content restoration methods according to claim 1, which is characterized in that step S102 it
Afterwards, the method also includes:
Inquiring encrypted digital content corresponding with the target copyrighted digital content whether there is, if described encrypted
Digital content exists, and enters step S103；If the encrypted digital content is not present, not true to the recovery request
Recognize.
3. a kind of block chain operating platform, characterized in that it comprises:
Receiving processing module, the recovery request of the target copyrighted digital content for receiving user's sending；
Query processing module for inquiring the public key information of the user, and inquires payment corresponding with the public key of the user
Bill has possessed the copyright of the target copyrighted digital content with the determination user；
Confirm processing module, for confirming the recovery request, receive the predetermined quantity GAS of user's payment, and by payment bill
It is broadcast on block chain；
Content processing module, for providing encrypted number to the user after block chain confirms the payment bill
Content and corresponding public key, wherein the encrypted digital content is corresponding with the target copyrighted digital content；
Interface module, for providing platform interface corresponding with block chain node interface；
Memory module is cached for the data to block chain operating platform.
4. block chain operating platform according to claim 3, which is characterized in that further include: judging treatmenting module, for looking into
Asking encrypted digital content corresponding with the target copyrighted digital content whether there is, if in the encrypted number
It stores, triggers the confirmation processing module.
5. a kind of block chain copyrighted digital content restoration methods, which is characterized in that the described method comprises the following steps:
S201 inquires target copyright information on block chain operating platform, and the target copyright information includes target copyright digital
Nodal information where content；
S202 issues target copyright to block chain operating platform based on the target copyright information and owned public key
The recovery request of digital content；
S203 pays predetermined quantity to block chain operating platform after block chain operating platform confirms the recovery request
GAS, and payment bill is broadcast on block chain；
S204, after block chain confirms the payment bill, from block chain operating platform download encrypted digital content and
Corresponding public key, wherein the encrypted digital content is corresponding with the target copyrighted digital content；
S205, by owned private key and public key corresponding with the encrypted digital content, to described encrypted
Digital content be decrypted.
6. block chain copyrighted digital content restoration methods according to claim 5, which is characterized in that use DH (Diffie-
Hellman, diffie-hellman are graceful) the encrypted digital content is decrypted in Diffie-Hellman.
7. a kind of block chain copyrighted digital content restoration methods, which is characterized in that the described method includes:
S301, user A inquire target copyright information to block chain operating platform, and owned to the offer of block chain operating platform
Exchange key pair EKa in public key PKa；Wherein the target version power information includes the node where encrypted digital content
With the information of copyright owner；
S302, block chain operating platform is from block chain querying node and obtains the user B with the encrypted digital content,
The public key PKa of the encrypted digital content and user A is notified to user B；
The encrypted digital content solution that S303, user B use owned private key to distribute block chain operating platform
It is close, obtain original digital content；
S304, user B generate exchange key pair EKb, and using the public key PKa of private key and user A in EKb obtain encrypting close
Key Kb encrypts the original digital content using Kb, and the public key PKb of encrypted content and user B are submitted
Give block chain operating platform；
S305, block chain operating platform notify user A to download the encrypted content and the public key PKb of user B；
The public key PKb of S306, user A private key and user B based on own key centering obtains clear crytpographic key Ka, and uses solution
Password Ka decrypts original digital content, completes the recovery of copyrighted digital content；Wherein Ka is consistent with Kb.
8. a kind of block chain copyrighted digital content restoration methods, which is characterized in that the described method comprises the following steps:
401, the recovery request for the target copyrighted digital content that user issues is received by block chain operating platform, and described in inquiry
The public key information of user；
S402 inquires payment bill corresponding with the public key of the user, and with determination, the user has possessed the target version
Weigh the copyright of digital content；
S403 confirms the recovery request, receives the predetermined quantity GAS of user's payment, and payment bill is broadcast to block chain
On；
S404 provides encrypted digital content and right with it to the user after block chain confirms the payment bill
The public key answered, wherein the encrypted digital content is corresponding with the target copyrighted digital content；Wherein,
The block chain operating platform includes:
Digital content receiving module, for receiving digital content summary info and encrypted digital content；The wherein number
Synopsis information includes the corresponding cryptographic Hash of original digital content；The encrypted digital content refers to original digital content
The content obtained after encryption；The original digital content includes one or more file contents for being able to carry out digitized processing；
Digital content release module, for issuing the digital content summary info and the encrypted digital content in area
On block chain；
Copyrighted digital content enquiry module, for inquiring the copyright information for the digital content issued on block chain；It is wherein described
The copyright information of digital content includes: digital content summary info, block transaction summarization information and/or block transaction account book；Its
Described in block transaction summarization information include that the All Activity record of current block and the corresponding block transaction of previous block are plucked
Want information；Block transaction account book include according to the multiple account book blocks for generating time sequencing arrangement, each account book block include with
The corresponding block transaction summarization information of the account book block；Wherein the transaction record includes the payment bill；
Receiving processing module, the recovery request of the target copyrighted digital content for receiving user's sending；
Query processing module for inquiring the public key information of the user, and inquires payment corresponding with the public key of the user
Bill has possessed the copyright of the target copyrighted digital content with the determination user；
Confirm processing module, for confirming the recovery request, receive the predetermined quantity GAS of user's payment, and by payment bill
It is broadcast on block chain；
Content processing module, for providing encrypted number to the user after block chain confirms the payment bill
Content and corresponding public key, wherein the encrypted digital content is corresponding with the target copyrighted digital content；
Interface module, for providing platform interface corresponding with block chain node interface；
Memory module is cached for the data to block chain operating platform.
9. a kind of block chain copyrighted digital content restoration methods, which is characterized in that the described method comprises the following steps:
S501, the recovery request for the target copyrighted digital content that user issues is received by block chain operating platform, and inquires institute
State the public key information of user；
S502 inquires payment bill corresponding with the public key of the user, and with determination, the user has possessed the target version
Weigh the copyright of digital content；
S503 confirms the recovery request, receives the predetermined quantity GAS of user's payment, and payment bill is broadcast to block chain
On；
S504 provides encrypted digital content and right with it to the user after block chain confirms the payment bill
The public key answered, wherein the encrypted digital content is corresponding with the target copyrighted digital content；Wherein,
The block chain operating platform includes:
Digital content receiving module, for receiving digital content summary info and encrypted digital content；The wherein number
Synopsis information includes the corresponding cryptographic Hash of original digital content；The encrypted digital content refers to original digital content
The content obtained after encryption；The original digital content includes one or more file contents for being able to carry out digitized processing；
Digital content release module, for issuing the digital content summary info and the encrypted digital content in area
On block chain；
Copyrighted digital content enquiry module, for inquiring the copyright information for the digital content issued on block chain；It is wherein described
The copyright information of digital content includes: digital content summary info, block transaction summarization information and/or block transaction account book；Its
Described in block transaction summarization information include that the All Activity record of current block and the corresponding block transaction of previous block are plucked
Want information；Block transaction account book include according to the multiple account book blocks for generating time sequencing arrangement, each account book block include with
The corresponding block transaction summarization information of the account book block；Wherein the transaction record includes the payment bill；
Receiving processing module, the recovery request of the target copyrighted digital content for receiving user's sending；
Query processing module for inquiring the public key information of the user, and inquires payment corresponding with the public key of the user
Bill has possessed the copyright of the target copyrighted digital content with the determination user；
Confirm processing module, for confirming the recovery request, receive the predetermined quantity GAS of user's payment, and by payment bill
It is broadcast on block chain；
Content processing module, for providing encrypted number to the user after block chain confirms the payment bill
Content and corresponding public key, wherein the encrypted digital content is corresponding with the target copyrighted digital content；
Interface module, for providing platform interface corresponding with block chain node interface；
Memory module is cached for the data to block chain operating platform；Also,
The block chain includes first node, and the first node is used to store the digital content summary info, the warp adds
Close digital content, the block transaction summarization information and block transaction account book.
10. block chain copyrighted digital content restoration methods according to claim 9, which is characterized in that the block chain is also
Including second node and/or third node, the second node is for storing the digital content summary info, block friendship
Easy summary info and block transaction account book；The third node is for storing the digital content summary info and the area
Block transaction summarization information.
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