CN106779707A - Monitoring and managing method, the apparatus and system of the digital cash Transaction Information based on block chain - Google Patents
Monitoring and managing method, the apparatus and system of the digital cash Transaction Information based on block chain Download PDFInfo
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/38—Payment protocols; Details thereof
- G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
- G06Q20/3823—Payment protocols; Details thereof insuring higher security of transaction combining multiple encryption tools for a transaction
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
- G06Q20/36—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes
- G06Q20/367—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes involving electronic purses or money safes
- G06Q20/3678—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes involving electronic purses or money safes e-cash details, e.g. blinded, divisible or detecting double spending
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/38—Payment protocols; Details thereof
- G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
- G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
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Abstract
The invention discloses the monitoring and managing method of the digital cash Transaction Information based on block chain, there is initialization public key, the initialization public key and digital cash Transaction Information of each participating user of supervision user in block chain；Monitoring and managing method includes：Digital cash Transaction Information is obtained from block chain；Digital cash Transaction Information includes supervision user profile, the first participating user information and encryption data；The initialization public key of the first participating user, and initialization public key and the initialization private key of supervision user according to the first participating user are obtained from block chain, the first shared private key of the first participating user is generated using shared key algorithm；Using the first shared private key decryption encryption data, obtain supervising the digital cash Transaction Information of user and the first participating user in plain text；Transaction Information can be realized to unrelated third party's secrecy on block chain；The invention also discloses the maintenance device and system of the digital cash Transaction Information based on block chain, with above-mentioned beneficial effect.
Description
Technical field
The present invention relates to technical field of data processing, more particularly to a kind of digital cash Transaction Information based on block chain
Monitoring and managing method, apparatus and system.
Background technology
Block chain is also called Distributed sharing account book, and it is mainly characterized by all participants and shares a unified book keeping operation account
This, preserves the Transaction Information of all digital cash above.Transfer accounts record, the remaining sum of so all participants are all with the shape of plaintext
Formula is preserved so that each participant checks respective Transaction Information, but these Transaction Informations cannot maintain secrecy to third party simultaneously,
The fund privacy of participant can not be protected.
In order to realize the secret protection of Transaction Information, traditional block chain scheme, such as bit coin, ether mill all use body
Part secrecy, form disclosed in account book solve privacy concern.Specifically, on traditional block chain, both parties are added using one
Close character string is used as the name on account of oneself, so that participant is difficult to play name on account with real real name user-association
Come.But carry out any type of fund on block chain to transfer accounts all be full disclosure, any participant it can be seen that certain
Digital cash remaining sum and all records of transferring accounts under one account name, do not know the true body of operator of this account behind simply
Part..
But it is above-mentioned all to there are problems that in the prior art.Existing account is anonymous, account book discloses scheme and privacy is protected
The form of shield is too weak, as long as participating in both sides' transaction once, you can know the part identity information of analogue, and then and real world
Entity associated get up, so as to real secret protection cannot be realized.At this moment monitoring party is While it can be seen that transaction content, but
Can be sayed in the absence of any privacy for other participants.
Therefore, Transaction Information how is realized to unrelated third party secrecy on block chain while also requiring transparent to supervision, is
The technical problem of those skilled in the art's urgent need to resolve.
The content of the invention
It is an object of the invention to provide a kind of monitoring and managing method of the digital cash Transaction Information based on block chain, device and it is
System, can realize Transaction Information to unrelated third party's secrecy on block chain.
In order to solve the above technical problems, the present invention provides a kind of monitoring party of the digital cash Transaction Information based on block chain
Method, initialization public key, the initialization public key of each participating user and the digital cash in the block chain with supervision user is handed over
Easy information；The monitoring and managing method includes：
Digital cash Transaction Information is obtained from the block chain；Wherein, the digital cash Transaction Information includes supervision
User profile, the first participating user information and encryption data；
The initialization public key of the first participating user is obtained from the block chain, and according to the first of first participating user
Beginningization public key and the initialization private key of the supervision user, the first of first participating user is generated using shared key algorithm
Shared private key；
The encryption data is decrypted using the described first shared private key, the supervision user is obtained and is participated in using with described first
The digital cash Transaction Information at family is in plain text.
Optionally, also have in the block chain and used according to the initialization private key of the supervision user and each described participation
The initialization public key at family generates the first shared public key of the first shared private key pair altogether of each participating user；The supervision
Method also includes：
Digital cash Transaction Information is obtained from the block chain；Wherein, the digital cash Transaction Information includes second
Participating user information, the 3rd participating user information and encryption data；
The second key pair is obtained, and according to second key pair, is participated in using shared key algorithm generation second
User and the second of the 3rd participating user the shared private key；Wherein, second key is to including second participating user
First shared public key of one shared private key and the 3rd participating user, or second participating user the first shared public key with
The shared private key of the first of 3rd participating user；
The encryption data is decrypted using the described second shared private key, second participating user is obtained with the 3rd ginseng
With the digital cash Transaction Information of user in plain text.
Optionally, the second key pair is obtained, including：
The initialization public key of initialization private key and second participating user according to the supervision user, using described common
Enjoy the first shared private key that key algorithm generates second participating user；
The first shared public key of the 3rd participating user is obtained from the block chain.
Optionally, the second key pair is obtained, including：
Determine that the first shared private key of second participating user participates in using with the described 3rd from public private key pair database
The shared public key of the first of family；Wherein, the structure of the public private key pair database includes：Initialization according to the supervision user is private
Key and the initialization public key of each participating user is obtained from the block chain, calculated using the shared key algorithm
The supervision user and the first of each participating user the shared public private key pair, form public private key pair database.
Optionally, the supervision user is by the of the initialization public key of the supervision user and each participating user
One shared public key is sent in the block chain；Each self-corresponding initialization public key is sent to the block by each participating user
In chain.
The present invention also provides a kind of maintenance device of the digital cash Transaction Information based on block chain, has in the block chain
There are initialization public key, the initialization public key and digital cash Transaction Information of each participating user of supervision user；The supervision dress
Put including：
First Transaction Information acquisition module, for obtaining digital cash Transaction Information from the block chain；Wherein, it is described
Digital cash Transaction Information includes supervision user profile, the first participating user information and encryption data；
First computing module, the initialization public key for obtaining the first participating user from the block chain, and according to institute
The initialization public key of the first participating user and the initialization private key of the supervision user are stated, it is described using the generation of shared key algorithm
The shared private key of the first of first participating user；
First deciphering module, for decrypting the encryption data using the described first shared private key, obtains the supervision and uses
The digital cash Transaction Information of family and first participating user is in plain text.
Optionally, also have in the block chain and used according to the initialization private key of the supervision user and each described participation
The initialization public key at family generates the first shared public key of the first shared private key pair altogether of each participating user；The supervision
Device also includes：
Second Transaction Information acquisition module, for obtaining digital cash Transaction Information from the block chain；Wherein, it is described
Digital cash Transaction Information includes the second participating user information, the 3rd participating user information and encryption data；
Second computing module, for obtaining the second key pair, and according to second key pair, using the shared key
Algorithm generates the second shared private key of the second participating user and the 3rd participating user；Wherein, second key is to including described
The shared private key of the first of second participating user shares public key, or second participating user with the first of the 3rd participating user
The first shared public key and the 3rd participating user the first shared private key；
Second deciphering module, for decrypting the encryption data using the described second shared private key, obtains second ginseng
With the digital cash Transaction Information of user and the 3rd participating user in plain text.
Optionally, second computing module, including：
Second computing unit, for according to it is described supervision user initialization private key and second participating user it is initial
Change public key, the first shared private key of second participating user is generated using the shared key algorithm；
Second acquisition unit, the first shared public key for obtaining the 3rd participating user from the block chain.
Optionally, the maintenance device also includes：
Public private key pair database, obtains for the initialization private key according to the supervision user and from the block chain
The initialization public key of each participating user, the supervision user and each described ginseng are calculated using the shared key algorithm
Public private key pair is shared with the first of user form public private key pair database；
Second computing module, including：
3rd acquiring unit, the first shared private key for determining second participating user from public private key pair database
With the 3rd participating user first shares public key.
The present invention also provides a kind of supervisory systems of the digital cash Transaction Information based on block chain, including：Block link network
The maintenance device of network, participant user's set and the digital cash Transaction Information based on block chain as described above, wherein,
The block chain network, for store supervision user initialization public key, the initialization public key of each participant and
Digital cash Transaction Information；
The participant device, for initialization public key and digital cash Transaction Information to be sent in the block chain.
The monitoring and managing method of the digital cash Transaction Information based on block chain provided by the present invention, has supervision in block chain
The initialization public key of user, the initialization public key and digital cash Transaction Information of each participating user；Monitoring and managing method includes：From area
Digital cash Transaction Information is obtained in block chain；Digital cash Transaction Information includes supervision user profile, the first participating user information
And encryption data；The initialization public key of the first participating user is obtained from block chain, and according to the initialization of the first participating user
Public key and the initialization private key of supervision user, the first shared private key of the first participating user is generated using shared key algorithm；Profit
Encryption data is decrypted with the first shared private key, obtains supervising the digital cash Transaction Information of user and the first participating user in plain text；
It can be seen that, the participating user of the method first or supervision user are in the digital cash Transaction Information sent in block chain
Transaction content such as dealing money is the data after encryption, therefore other participating users in block chain are to cannot see that and oneself
The digital cash transaction content of other unrelated participating users, such that it is able to realize Transaction Information to unrelated third party on block chain
Secrecy；Present invention also offers the maintenance device and system of the digital cash Transaction Information based on block chain, have with above-mentioned
Beneficial effect, will not be repeated here.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
A kind of monitoring and managing method of digital cash Transaction Information based on block chain that Fig. 1 is provided by the embodiment of the present invention
Flow chart；
The monitoring and managing method of digital cash Transaction Information of the another kind based on block chain that Fig. 2 is provided by the embodiment of the present invention
Flow chart；
The structure of the maintenance device of the digital cash Transaction Information based on block chain that Fig. 3 is provided by the embodiment of the present invention
Block diagram.
Specific embodiment
A kind of monitoring and managing method of digital cash Transaction Information based on block chain that core of the invention is to provide, device and
System, can realize Transaction Information to unrelated third party's secrecy on block chain.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The optimized integration of the present embodiment is that have the initialization public key of supervision user, each in block chain (i.e. block chain network)
The initialization public key and digital cash Transaction Information of individual participating user (i.e. each participant)；Fig. 1 is specifically refer to, Fig. 1 is this
The flow chart of the monitoring and managing method of the digital cash Transaction Information based on block chain that inventive embodiments are provided；The monitoring and managing method
Can include：
S100, the acquisition digital cash Transaction Information from the block chain；Wherein, the digital cash Transaction Information includes
Supervision user profile, the first participating user information and encryption data；
S110, the initialization public key for obtaining from the block chain the first participating user, and participate in using according to described first
The initialization public key and the initialization private key of the supervision user at family, first participating user is generated using shared key algorithm
The first shared private key；
S120, the encryption data is decrypted using the described first shared private key, obtain the supervision user and described first
The digital cash Transaction Information of participating user is in plain text.
Wherein, the first participating user in the present embodiment can be the participating user in any one block chain, and first simultaneously
Certain particular user is not referred specifically to.It is appreciated that every to the participating user that digital cash Transaction Information is issued on block chain
May each be the first participating user.
Here digital cash Transaction Information includes supervision user profile, the first participating user information and encryption data, this
In supervision user profile can refer to supervise user account address information；First participating user information can refer to the first ginseng
With the account address information of user；The content of encryption data can include the cleartext information of dealing money, the content of encryption data
The protection key that can also be transferred accounts including privacy etc., such as paying party is publisher user namely the first participating user by trade gold
The protection key x that the plaintext P (such as P=10000.00) and privacy of volume transfer accounts1Area is sent to after sharing private key encryption using first
On block chain (encryption data can be designated as Message).In order to be further ensured that digital cash Transaction Information publisher user's
Reliability, the digital cash Transaction Information can also sign electronically including publisher user, to verify publisher's user identity.
Specifically, each participating user supervised in the present embodiment in user and block chain can will calculate the first of generation
Initialization public key publication in beginningization public private key pair is in block chain, and respective initialization private key then needs oneself to preserve.Cause
For initialization private key here is used for generating the first shared private key follow-up, and the first shared private key is used for monitoring party and participation
The transaction data of side is encrypted and decryption oprerations.Therefore supervision user and each participating user must keep properly oneself
Initialization private key.Initialization public private key pair is not carried out to each participating user in supervision user and block chain in the present embodiment
Calculation be defined.Such as monitoring party generation monitoring party initialization public private key pair Pk0, Sk0, and it is open on block chain
Public key Pk0, participant A generation participant initialization public private key pairsAnd public key is disclosed on block chainParticipate in
Square A can refer to any one block chain participating user.
Supervision user can obtain whole digital cash Transaction Informations, each digital cash transaction from the block chain
Information can be decrypted as procedure described above；Can also obtain the digital cash being arbitrarily designated from the block chain to hand over
Easy information, and each digital cash Transaction Information to obtaining be decrypted as procedure described above.The present embodiment is not to this
It is defined.
Supervision user obtains after knowing the first participating user identity from the digital cash Transaction Information for obtaining from block chain
The initialization public key of the first participating user is taken, and the initialization private key preserved according to supervision user oneself, calculated using shared key
Method generates the first shared private key of first participating user；I.e. according to Sk0、Monitoring party is calculated using shared key algorithm
With the shared public private key pair Pk of participant AAAnd SkA.Wherein, SkAAs first shared private key.Decrypted using the first shared private key
The encryption data, obtains the digital cash Transaction Information of supervision user and first participating user in plain text.
Wherein, the present embodiment is not defined to specific shared key algorithm.It can be any one shared key
Algorithm.Its specifically used parameter is all the private key of one's own side and the public key of other side, and the former is each to preserve, and the latter is public on block chain
Open.Here it can be ECDH algorithms that shared key is calculated.
Here it is with the first shared private key when the first participating user directly carries out digital cash Transaction Information with supervision user
It is encrypted.Detailed process can be：Initialization private key and the supervision obtained from block chain using the first participating user
The initialization public key of user, the first shared private key of first participating user is generated using shared key algorithm.That is basisPk0The shared public private key pair Pk of monitoring party and participant A is calculated using shared key algorithmAAnd SkA。Sk0、With
Pk0The Pk being calculatedAAnd SkAIt is the same.
Specific embodiment explanation said process is set forth below：
First：Paying party is that the first participating user generates the protection key x that this privacy is transferred accounts at random1, use key x1
Protection is encrypted to dealing money, the transfer data after encryption is designated as E.
Second：The protection key x that paying party transfers accounts the plaintext P (such as P=10000.00) and privacy of dealing money1Use
SkAIt is sent to after encryption on block chain (encryption data is designated as Message).
3rd：Monitoring party inquires the shared private key Sk that both sides are used after the payment action on block chainADecryption
After Message, plaintext P and x are obtained1, use x1Beneficiary can verify the correctness of E, it is possible to utilize the x1Exist as voucher
Consumed using this money transfer on block chain.
Based on above-mentioned technical proposal, the monitoring party of the digital cash Transaction Information based on block chain that the embodiment of the present invention is carried
Method, can be calculated transaction content such as dealing money in the digital cash Transaction Information of transmission in block chain etc. using shared key
The first shared private key that method is obtained is encrypted, thus other participating users in block chain cannot see that it is unrelated with oneself
The digital cash transaction content of other participating users, such that it is able to realize Transaction Information to the unrelated 3rd guarantor for participating on block chain
It is close.
Although above-described embodiment serves the secret protection to the Transaction Information of participant, but problem is only to realize participation
User and the secret protection of the digital cash Transaction Information of supervision user, still can not realize for participant with participant
Secret protection of the Transaction Information to any third party's participating user except monitoring party.Therefore on the basis of above-described embodiment,
Also there is the initialization private key and each participating user according to the supervision user in block chain described in the present embodiment
Initialization public key generates the first shared public key of the first shared private key pair altogether of each participating user；Fig. 2 is refer to, institute
Stating monitoring and managing method can also include：
S200, the acquisition digital cash Transaction Information from the block chain；Wherein, the digital cash Transaction Information includes
Second participating user information, the 3rd participating user information and encryption data；
S210, the second key pair of acquisition, and according to second key pair, second is generated using the shared key algorithm
Second shared private key of participating user and the 3rd participating user；Wherein, second key is to including second participating user
The first shared private key and the 3rd participating user the first shared public key, or second participating user the first shared public affairs
Key shares private key with the first of the 3rd participating user；Wherein, two group keys here are to being of equal value, therefore are calculated
The second shared private key be also the same.
S220, decrypt the encryption data using the described second shared private key, obtain second participating user with it is described
The digital cash Transaction Information of the 3rd participating user is in plain text.
Wherein, the second participating user and the 3rd participating user in the present embodiment can be the ginsengs in any one block chain
With user, second and the 3rd does not refer specifically to certain particular user.It is appreciated that participating user may each be on block chain
Second participating user and the 3rd participating user.Here the second participating user and the 3rd participating user refers to digital cash transaction letter
Paying party and beneficiary in breath.
Specifically, each participating user supervised in the present embodiment in user's (i.e. monitoring party) and block chain will can be counted
The initialization public key publication in the initialization public private key pair of generation is calculated in block chain, and respective initialization private key then needs certainly
Oneself preserves.Because initialization private key here is used for generating the first shared public private key pair follow-up, and the first of paying party is shared
The first shared private key in public private key pair be used for and the first shared public private key pair of beneficiary in the first shared public key generation the
Two shared private keys are encrypted and decryption oprerations to the transaction data of paying party and beneficiary.Therefore supervision user joins with each
With the initialization private key that user must keep properly oneself.Each participant user also needs to have kept properly oneself first and is total to
Enjoy private key.To each participating user in supervision user and block chain initialize the meter of public private key pair in the present embodiment
Calculation mode is defined.
Such as monitoring party generation monitoring party initialization public private key pair Pk0, Sk0, and the open public key Pk on block chain0, participate in
Square A generations participant initialization public private key pairAnd public key is disclosed on block chainParticipant A can refer to appoint
One block chain participating user of meaning, user is according to Sk for supervision0、Monitoring party and participant A are calculated using shared key algorithm
Shared public private key pair PkAAnd SkA.Wherein, SkAAs first shared private key, PkAIt is the first shared public key.Participant A according toPk0, calculate using shared key algorithm the shared public private key pair Pk of monitoring party and participant AAAnd SkA.Participant A to
When participant B initiates transactional operation, according to SkA、PkB, the second shared private key Sk is calculated using shared key algorithmAB, using SkAB
Encrypting transactions data generates encryption data, and forms final digital cash Transaction Information and be published in block chain.Participant B exists
After the digital cash Transaction Information is found in block chain, according to SkB、PkA, the second shared private key is calculated using shared key algorithm
SkAB, using SkABThe encryption data is decrypted, digital cash Transaction Information is obtained in plain text.And supervise user can be according to itself
Initialization private key and each participating user initialization public key can obtain any one user first share private key；Supervision
User can obtain the first shared public key of each participating user from block chain again, therefore can be calculated any participation use
The shared private key of the second of family.Such that it is able to decrypt the digital cash Transaction Information in block chain between any two participating user.
I.e. supervision user can be according to Sk0、Or Sk0、Being total to for monitoring party and participant A is calculated using shared key algorithm
Enjoy public private key pair PkAAnd SkA, or monitoring party and participant B shared public private key pair PkBAnd SkB, and then Sk can be utilizedA+PkB
Or SkB+PkACalculate the shared private key Sk of generation secondAB。
From said process it is known that other participants in block chain are due to that can not obtain participant A or participant B
The first shared private key, therefore the second shared private key cannot be determined.And then this digital cash Transaction Information cannot be added
Particular content that is close therefore also cannot just learning the digital cash Transaction Information.Ensure that the digital cash Transaction Information is participated in
The transaction privacy of both sides, can make monitoring party obtain the content of the digital cash Transaction Information again, realize to being concluded the business in block chain
The supervision of legitimacy.
Wherein, the present embodiment is not defined to specific shared key algorithm.It can be any one shared key
Algorithm.Its specifically used parameter is all the private key of one's own side and the public key of other side, and the former is each to preserve, and the latter is public on block chain
Open.Here it can be ECDH algorithms that shared key is calculated.
Here supervision user can only preserve the initialization private key of oneself, when supervision digital cash Transaction Information is needed,
The first shared public key and the second shared public key of correlation are obtained from block chain and is calculated from level to level according to above-mentioned calculating process
Private key is shared so as to carry out the decrypting process of digital cash Transaction Information to second.This kind of mode supervises user's set to be needed to internal memory
Asking can be much smaller, but certain influence is had in calculating speed, especially in the situation that digital cash Transaction Information is large number of
Under.
Supervision user can also be first according to oneself initialization private key be calculated whole participating users in block chain
First shared public private key pair forms public private key pair database or public private key pair tables of data.Dependency number can be directly searched after
According to once being calculated and can be obtained by the second shared private key.Such form can be larger compared with the first to memory requirements, but
It is that can be lifted in calculating speed.Especially had in calculating speed in the case that digital cash Transaction Information is large number of very big
Lifting.Here public private key pair database or public private key pair tables of data can in time enter with the change of participating user in block chain
Row updates.
Supervision user can also after the first shared public private key pair for being calculated any participating user in block chain, be entered
Both rows are calculated the second shared private key between any two user and are preserved.For example pass through SkA、PkBOr SkB、
PkACalculate the second shared private key Sk between generation participant A and participant BAB.Can after digital cash Transaction Information is obtained
In decryption digital cash Transaction Information being realized with direct the second shared private key searched between two participating users of correspondence
The process of encryption data.The method is fastest.EMS memory occupation amount is also bigger than the first, the calculating after its early stage initialization procedure
The process amount of calculation of the second shared private key between amount i.e. generation any two user is larger.Here between any two user
The second shared private key can be in time updated with the change of participating user in block chain.
First shared public key of each participating user in the present embodiment in block chain can be on supervision direction block chain
Issue, or each participating user oneself are issued on block chain.The present embodiment is not defined to this.
The mode that the present embodiment does not calculate supervision user the second shared private key is defined.
Specific embodiment explanation said process is set forth below：
First：Paying party such as participant A generates the protection key x that this privacy is transferred accounts at random1, use key x1To handing over
The easy amount of money is encrypted protection, and the transfer data after encryption is designated as E.
Second：The protection key x that paying party transfers accounts the plaintext P (such as P=10000.00) and privacy of dealing money1Use
SkABIt is sent to after encryption on block chain (encryption data is designated as Message).
3rd：Monitoring party inquires the shared private key Sk that both sides are used after the payment action on block chainABDecryption
After Message, plaintext P and x are obtained1, use x1Beneficiary can verify the correctness of E, it is possible to utilize the x1Exist as voucher
Consumed using this money transfer on block chain.Here x1It can be the random number of transaction initiator's generation.
When actually being transferred accounts, carry out following transfer process, transfer accounts may between participant A/B or participant with
Between monitoring party, data encryption is entered using the second shared private key if between participant A/B, if in participant and supervision
Between side, then data encryption is entered using the first shared private key.Make to allow counterparty side and monitoring party to know that this is transferred accounts
Encryption key x and transaction plaintext P, is encrypted to form Message information simultaneously using the shared key with analogue to it
It is published in the mechanism on block chain.
The present embodiment uses multilayer shared key mechanism, if the shared private key design that is, only between participant, supervision
Side cannot just supervise；If monitoring party is each participant specifies a public private key pair, monitoring party must just safeguard a Pang
Big database.Such scheme monitoring party only needs to safeguard initial public private key pair, behind all of shared key can profit
Processed with disclosed information calculating on block chain.Or only need to safeguard the first shared public private key pair database, or any two
The second shared private key data storehouse between individual user.
User is supervised in above-mentioned two embodiment can be shared with other supervision use by supervision user's initialization public private key pair
Family, realizes multi-party supervision on the premise of without synchronous each participant secret protection key.
Based on above-mentioned technical proposal, the monitoring party of the digital cash Transaction Information based on block chain that the embodiment of the present invention is carried
Method, solves the fund information such as remaining sum, the dealing money of digital cash on block chain and is realized simultaneously on the premise of secret protection
" seeing through mechanism " of monitoring party (such as Central Bank), i.e., in addition to the transaction partners, only monitoring party can obtain all digital goods
The cleartext informations such as remaining sum, the dealing money of coin.Both transaction content can have been realized to unrelated third party secrecy on block chain, again can be with
Realization allows mandate monitoring party to track and decode.The unification of secret protection and supervision is realized, for carrying digital goods on block chain
Coin business has positive effect.
Based on above-described embodiment, the step for obtaining the second key pair can include：
The initialization public key of initialization private key and second participating user according to the supervision user, using described common
Enjoy the first shared private key that key algorithm generates second participating user；
The first shared public key of the 3rd participating user is obtained from the block chain.
Specifically, supervise user in the present embodiment to only need to preserve a public private key pair (monitoring party public private key pair), you can
All of transaction on block chain is supervised.
Based on above-described embodiment, the step for obtaining the second key pair can include：
Determine that the first shared private key of second participating user participates in using with the described 3rd from public private key pair database
The shared public key of the first of family；Wherein, the structure of the public private key pair database includes：Initialization according to the supervision user is private
Key and the initialization public key of each participating user is obtained from the block chain, calculated using the shared key algorithm
The supervision user and the first of each participating user the shared public private key pair, form public private key pair database.
Specifically, can be updated to public private key pair database in real time according to the change of participating user in block chain.
Based on above-mentioned any embodiment, the supervision user is by described in the initialization public key of the supervision user and each
The shared public key of the first of participating user is sent in the block chain；Each participating user sends out each self-corresponding initialization public key
It is sent in the block chain.The published method that the present embodiment is provided is more efficient, convenient.
Based on above-mentioned any embodiment, in order to further improve the security of secret protection, participating user oneself generation, the palm
Secret protection key is held, is set in advance without supervising user；One-time pad is could be arranged to, and oneself is generated, so as to carry significantly
The security of secret protection high.
Based on above-mentioned technical proposal, the monitoring party of the digital cash Transaction Information based on block chain that the embodiment of the present invention is carried
Method, the method is divided into Three-tider architecture, and ground floor is to supervise the initialization public key that user announces, and the second layer is that participating user is announced
Initialization public key and participating user and the first of supervision user the shared private key, third layer are that second calculated between participating user is total to
Enjoy private key.Designed by this three layers public and private key, it is ensured that on the premise of sending private information safely between participating user
Monitoring party can be to its perfect tracking.
Below to the maintenance device and system of the digital cash Transaction Information based on block chain provided in an embodiment of the present invention
It is introduced, the maintenance device and system of the digital cash Transaction Information based on block chain described below and above-described base
Can be mutually to should refer in the monitoring and managing method of the digital cash Transaction Information of block chain.
There is initialization public key, the initialization public key of each participating user and the numeral of supervision user in the block chain
During moneytary operations information, Fig. 3, the transaction letter of the digital cash based on block chain that Fig. 3 is provided by the embodiment of the present invention are refer to
The structured flowchart of the maintenance device of breath；The maintenance device can include：
First Transaction Information acquisition module 100, for obtaining digital cash Transaction Information from the block chain；Wherein,
The digital cash Transaction Information includes supervision user profile, the first participating user information and encryption data；
First computing module 200, the initialization public key for obtaining the first participating user from the block chain, and according to
The initialization public key and the initialization private key of the supervision user of first participating user, institute is generated using shared key algorithm
State the first shared private key of the first participating user；
First deciphering module 300, for decrypting the encryption data using the described first shared private key, obtains the supervision
The digital cash Transaction Information of user and first participating user is in plain text.
Based on above-described embodiment, also there is the initialization private key according to the supervision user and each institute in the block chain
The initialization public key for stating participating user generates the first of each participating user the first shared public key for sharing private key pair altogether；
The maintenance device can also include：
Second Transaction Information acquisition module, for obtaining digital cash Transaction Information from the block chain；Wherein, it is described
Digital cash Transaction Information includes the second participating user information, the 3rd participating user information and encryption data；
Second computing module, for obtaining the second key pair, and according to second key pair, using the shared key
Algorithm generates the second shared private key of the second participating user and the 3rd participating user；Wherein, second key is to including described
The shared private key of the first of second participating user shares public key, or second participating user with the first of the 3rd participating user
The first shared public key and the 3rd participating user the first shared private key；
Second deciphering module, for decrypting the encryption data using the described second shared private key, obtains second ginseng
With the digital cash Transaction Information of user and the 3rd participating user in plain text.
Specifically, the first Transaction Information acquisition module 100 and the second Transaction Information acquisition module in two embodiments can
Think two unit modules having under a module, or a receiver module.Similarly the first deciphering module 300 and
Two deciphering modules can be two unit modules having under a module, or a receiver module.
Based on above-described embodiment, second computing module can include：
Second computing unit, for according to it is described supervision user initialization private key and second participating user it is initial
Change public key, the first shared private key of second participating user is generated using the shared key algorithm；
Second acquisition unit, the first shared public key for obtaining the 3rd participating user from the block chain.
Based on above-described embodiment, the maintenance device can also include：
Public private key pair database, obtains for the initialization private key according to the supervision user and from the block chain
The initialization public key of each participating user, the supervision user and each described ginseng are calculated using the shared key algorithm
Public private key pair is shared with the first of user form public private key pair database；
Then second computing module can include：
3rd acquiring unit, the first shared private key for determining second participating user from public private key pair database
With the 3rd participating user first shares public key.
The embodiment of the present invention also provides a kind of supervisory systems of the digital cash Transaction Information based on block chain, including：Area
Block chain network, participant user's set and the digital cash Transaction Information based on block chain as described in above-mentioned any embodiment
Maintenance device, wherein,
The block chain network, for store supervision user initialization public key, the initialization public key of each participant and
Digital cash Transaction Information；
The participant device, for initialization public key and digital cash Transaction Information to be sent in the block chain.
Each embodiment is described by the way of progressive in specification, and what each embodiment was stressed is and other realities
Apply the difference of example, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
Speech, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part illustration
.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes the composition and step of each example according to function in the above description.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think beyond the scope of this invention.
The step of method or algorithm for being described with reference to the embodiments described herein, directly can be held with hardware, processor
Capable software module, or the two combination is implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In field in known any other form of storage medium.
Above to monitoring and managing method, the apparatus and system of the digital cash Transaction Information based on block chain provided by the present invention
It is described in detail.Specific case used herein is set forth to principle of the invention and implementation method, above reality
The explanation for applying example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that for the art
For those of ordinary skill, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention,
These are improved and modification is also fallen into the protection domain of the claims in the present invention.
Claims (10)
1. a kind of monitoring and managing method of the digital cash Transaction Information based on block chain, it is characterised in that have in the block chain
The initialization public key of supervision user, the initialization public key and digital cash Transaction Information of each participating user；The monitoring and managing method
Including：
Digital cash Transaction Information is obtained from the block chain；Wherein, the digital cash Transaction Information includes supervision user
Information, the first participating user information and encryption data；
The initialization public key of the first participating user is obtained from the block chain, and according to the initialization of first participating user
Public key and the initialization private key of the supervision user, generate first participating user using shared key algorithm first are shared
Private key；
The encryption data is decrypted using the described first shared private key, supervision user and first participating user is obtained
Digital cash Transaction Information is in plain text.
2. monitoring and managing method according to claim 1, it is characterised in that also have in the block chain and used according to the supervision
The initialization private key at family and the initialization public key of each participating user generate the first of each participating user and share common
The shared public key of the first of private key pair；The monitoring and managing method also includes：
Digital cash Transaction Information is obtained from the block chain；Wherein, the digital cash Transaction Information includes that second participates in
User profile, the 3rd participating user information and encryption data；
The second key pair is obtained, and according to second key pair, the second participating user is generated using the shared key algorithm
With the 3rd participating user second shares private key；Wherein, second key is common to including second participating user first
Enjoy the first shared public key of private key and the 3rd participating user, or second participating user the first shared public key with it is described
The shared private key of the first of 3rd participating user；
The encryption data is decrypted using the described second shared private key, second participating user is obtained and is participated in using with the described 3rd
The digital cash Transaction Information at family is in plain text.
3. monitoring and managing method according to claim 2, it is characterised in that obtain the second key pair, including：
The initialization public key of initialization private key and second participating user according to the supervision user, using described shared close
Key algorithm generates the first shared private key of second participating user；
The first shared public key of the 3rd participating user is obtained from the block chain.
4. monitoring and managing method according to claim 2, it is characterised in that obtain the second key pair, including：
The first shared private key and the 3rd participating user of second participating user are determined from public private key pair database
First shared public key；Wherein, the structure of the public private key pair database includes：According to it is described supervision user initialization private key with
And the initialization public key of each participating user is obtained from the block chain, calculate described using the shared key algorithm
Supervision user and the first of each participating user the shared public private key pair, form public private key pair database.
5. the monitoring and managing method according to claim any one of 2-5, it is characterised in that the supervision user uses the supervision
The initialization public key at family and the first of each participating user the shared public key are sent in the block chain；Each participates in using
Be sent to each self-corresponding initialization public key in the block chain by family.
6. a kind of maintenance device of the digital cash Transaction Information based on block chain, it is characterised in that have in the block chain
The initialization public key of supervision user, the initialization public key and digital cash Transaction Information of each participating user；The maintenance device
Including：
First Transaction Information acquisition module, for obtaining digital cash Transaction Information from the block chain；Wherein, the numeral
Moneytary operations information includes supervision user profile, the first participating user information and encryption data；
First computing module, the initialization public key for obtaining the first participating user from the block chain, and according to described
The initialization public key and the initialization private key of the supervision user of one participating user, described first is generated using shared key algorithm
The shared private key of the first of participating user；
First deciphering module, for decrypting the encryption data using the described first shared private key, obtain the supervision user with
The digital cash Transaction Information of first participating user is in plain text.
7. maintenance device according to claim 6, it is characterised in that also have in the block chain and used according to the supervision
The initialization private key at family and the initialization public key of each participating user generate the first of each participating user and share common
The shared public key of the first of private key pair；The maintenance device also includes：
Second Transaction Information acquisition module, for obtaining digital cash Transaction Information from the block chain；Wherein, the numeral
Moneytary operations information includes the second participating user information, the 3rd participating user information and encryption data；
Second computing module, for obtaining the second key pair, and according to second key pair, using the shared key algorithm
Generate the second shared private key of the second participating user and the 3rd participating user；Wherein, second key is to including described second
First shared private key of participating user and the first shared public key of the 3rd participating user, or second participating user the
One shared public key shares private key with the first of the 3rd participating user；
Second deciphering module, for decrypting the encryption data using the described second shared private key, obtains described second and participates in using
The digital cash Transaction Information of family and the 3rd participating user is in plain text.
8. maintenance device according to claim 7, it is characterised in that second computing module, including：
Second computing unit, the initialization for initialization private key and second participating user according to the supervision user is public
Key, the first shared private key of second participating user is generated using the shared key algorithm；
Second acquisition unit, the first shared public key for obtaining the 3rd participating user from the block chain.
9. maintenance device according to claim 8, it is characterised in that the maintenance device also includes：
Public private key pair database, each is obtained for the initialization private key according to the supervision user and from the block chain
The initialization public key of the participating user, calculates the supervision user and is used with each described participation using the shared key algorithm
The shared public private key pair of the first of family forms public private key pair database；
Second computing module, including：
3rd acquiring unit, the first shared private key and institute for determining second participating user from public private key pair database
State the first shared public key of the 3rd participating user.
10. a kind of supervisory systems of the digital cash Transaction Information based on block chain, it is characterised in that including：Block chain network,
The supervision dress of participant user's set and the digital cash Transaction Information based on block chain as described in claim any one of 6-9
Put, wherein,
The block chain network, initialization public key, the initialization public key of each participant and numeral for storing supervision user
Moneytary operations information；
The participant device, for initialization public key and digital cash Transaction Information to be sent in the block chain.
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