CN106910072A - Digital cash management method and system - Google Patents
Digital cash management method and system Download PDFInfo
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- CN106910072A CN106910072A CN201710080527.3A CN201710080527A CN106910072A CN 106910072 A CN106910072 A CN 106910072A CN 201710080527 A CN201710080527 A CN 201710080527A CN 106910072 A CN106910072 A CN 106910072A
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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
- G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
- G06Q20/401—Transaction verification
- G06Q20/4014—Identity check for transactions
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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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Abstract
The present invention provides digital cash management system and method, the wherein distribution of authorities currency control and recovery and management user account, information to needing to preserve is signed and is provided it to book keeping operation person, during book keeping operation person will need the information for preserving to charge to block chain after verifying the signature；And wherein user account includes being based on what User Identity was set up by authorities, the corresponding private key of each account is, with the account as public key, to be generated by Identity based encryption method by authorities.The system introduces the controllability that authorities strengthen digital cash, by authorities currency control distribution and reclaim and effectively supervise user identity, but extra supervision cost and administration fee is introduced, existing digital cash decentralization management is maintained while various illegal acts caused by effectively prevent due to digital cash strong controllable, the features such as transaction cost is low and flexible.
Description
Technical field
The present invention relates to digital cash, more particularly to the method and system that digital cash is managed.
Background technology
With continuing to develop for Internet technology, digital cash is of increased attention and approves, it can not only
Save distribution, the cost that brings of circulation, moreover it is possible to improve the efficiency of transaction or investment, lift the convenience and thoroughly of economic transaction activity
Lightness.In general, digital cash may include the electronic form of franc, such as such as bank card, Net silver, Alipay or the like
Electronic money, and non-franc electronization, for example, Baidu's coin of the Q coin of such as Tencent, baidu company etc is virtual
Currency, and the such as encryption digital cash of bit coin, Lay spy coin etc.
Wherein encryption digital cash preferably solves center using the distributed book keeping operation mode based on block chain technology
Change, go trust problem, and with can not distort and the features such as cryptographic security.By taking bit coin as an example, relative to based on PKI systems
Currency, because it uses block chain technology to be adjusted and stored, hardware or management organization in the absence of centralization using distributed,
Independently be traded confirmation by the network user, thus bit coin distribution and transaction cost it is very low.And block chain is used and is based on
Consensus specification and agreement enables all nodes in whole system in the freely safe exchange of the environment for going to trust
Data, once information permanent will be stored, unless system can be controlled simultaneously by verifying and added to block chain
In authority more than 51%, to the modification of database be otherwise on individual node it is invalid, therefore block chain data stability
It is high with reliability.
But this kind of encryption digital cash transaction is full energy matries, user is disguised strong, it is difficult to follow the trail of, so bit coin
Usually with foreign exchange transfer, illegal money laundering, terroristic organization financing, evade a tax etc. illegal act tight association.And because bit coin is handed over
Easily be bit coin address and corresponding private key by user come what is carried out, private key is present in stored value card, once private key is stolen, by
In the anonymity of bit coin and anonymity controlled, user is difficult to recover loss.
The content of the invention
Therefore, it is an object of the invention to overcome the defect of above-mentioned prior art, there is provided a kind of new safer controllable
Digital cash management system and method.
The purpose of the present invention is achieved through the following technical solutions：
On the one hand, the invention provides a kind of digital cash management system, the system includes authorities and book keeping operation person, wherein
The distribution of authorities currency control is signed and is provided with recovery and management user account, the information to needing to preserve
To book keeping operation person, during book keeping operation person will need the information for preserving to charge to block chain after verifying the signature；And
Wherein user account includes being based on the one or more real names of User Identity foundation by authorities and/or hides
Name account, the corresponding private key of each account be by authorities with the account as public key, by Identity based encryption method come
Generation.
In said system, authorities can be carried out for the information that different operating or business are produced using same private key
Signature.
In said system, authorities may include multiple unsymmetrical key pair for signing.
In said system, authorities can be entered for the information that different operating or business are produced using different private keys
Row signature.
In said system, authorities can be entered for the information that same operation or business are produced using different private keys
Row signature.
In said system, real name account can be given birth to by being filled to User Identity according to pre-defined rule
Into, anonymous account can be generated by being encrypted to real name account.
In said system, the anonymous account can utilize symmetric cryptography or asymmet-ric encryption method pair by authorities
Obtained from the encryption of real name account, and the key for being used to be decrypted anonymous account is visible only to authorities.
In said system, the authorities can refer in response to asking for a number of currency to inject one or more
Determine account and deduct a number of currency by force from one or more accounts.
In said system, the authorities can be in response to asking to freeze one or more destiny accounts, solving
Freeze or destroy.
In said system, the book keeping operation person can when relevant with its account operation information from user is received,
The state of the account involved by the information is checked based on block chain to determine whether in the information record to block chain, wherein account
The state at family includes whether to be frozen, thaw or destroy.
In said system, the authorities can be decrypted in response to request to anonymous account, and according to described pre-
Fixed fill rule removes filling content from the plaintext obtained after decryption, to obtain user identity mark corresponding with the account
Know.
In said system, the authorities can have only to its visible master key and disclosed systematic parameter, the power
Prestige can generate private key corresponding with the account based on the master key, systematic parameter and account.
In said system, systematic parameter private key corresponding with each account can be used for by user to the account
The relevant information of reason is signed.
In said system, the book keeping operation person, can profit when relevant with its account operation information from user is received
Digital signature therein is verified with the account and the systematic parameter of the user.
Another aspect, the invention provides a kind of digital cash management method, including：
Distribution and recovery and management user account by authorities currency control, and the information that needs are preserved is signed
Name and issue；
The information that authorities are issued is received by book keeping operation person, the information for needing to preserve is charged into block chain after verifying the signature
In；
Wherein user account includes being based on the one or more real names of User Identity foundation by authorities and/or hides
Name account, the corresponding private key of each account be by authorities with the account as public key, by Identity based encryption method come
Generation.
In the above-mentioned methods, may also include is carried out for the information that different operating is produced by authorities using same private key
Signature.
In the above-mentioned methods, may also include and entered using different private keys for the information that different operating is produced by authorities
Row signature.
In the above-mentioned methods, may also include and use different privates for the information that same operation or business are produced by authorities
Key is signed.
In the above-mentioned methods, real name account can be given birth to by being filled to User Identity according to pre-defined rule
Into, anonymous account can be generated by being encrypted to real name account.
In the above-mentioned methods, the anonymous account can utilize symmetric cryptography or asymmet-ric encryption method pair by authorities
Obtained from the encryption of real name account, and the key for being used to be decrypted anonymous account is visible only to authorities.
In the above-mentioned methods, may also include by the authorities in response to ask by a number of currency inject one or
Multiple destiny accounts and deduct a number of currency by force from one or more accounts.
In the above-mentioned methods, may also include by the authorities in response to asking to freeze one or more destiny accounts
Knot, defrosting are destroyed.
In the above-mentioned methods, may also include and the letter relevant with its account operation from user is being received by the book keeping operation person
During breath, the state of the account involved by the information is checked based on block chain to determine whether in the information record to block chain,
The state of wherein account includes whether to be frozen, thaw or destroy.
In the above-mentioned methods, may also include by the authorities in response to request, anonymous account is decrypted, and according to
The predetermined fill rule removes filling content from the plaintext obtained after decryption, to obtain user's body corresponding with the account
Part mark.
In the above method, the authorities can have only to its visible master key and disclosed systematic parameter, the power
Prestige can generate private key corresponding with the account based on the master key, systematic parameter and account.
In the above-mentioned methods, systematic parameter private key corresponding with each account can be used for by user to the account
The relevant information of reason is signed.
In the above-mentioned methods, may also include and the letter relevant with its account operation from user is being received by the book keeping operation person
During breath, digital signature therein is verified using the account and the systematic parameter of the user.
Compared with prior art, the advantage of the invention is that：
Introduce authorities strengthen digital cash controllability, by authorities currency control distribution and reclaim and effectively supervise
Pipe user identity, realizes digital cash trade mode transparent to authorities and anonymous to domestic consumer, but do not introduce
Extra supervision cost and administration fee, and reduce implementation, operation cost, improve service efficiency, effectively prevent by
Existing digital cash decentralization management is maintained while various illegal acts caused by digital cash strong controllable, is handed over
Easy low cost and it is flexible the features such as.
Brief description of the drawings
Embodiments of the present invention is further illustrated referring to the drawings, wherein：
Fig. 1 is the digital cash management system structural representation according to the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the digital cash management method according to the embodiment of the present invention.
Specific embodiment
In order that the purpose of the present invention, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing by specific real
The present invention is described in more detail to apply example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
Fig. 1 gives the structural representation of digital cash management system according to an embodiment of the invention.System master
It is related to authorities, book keeping operation person and user.Wherein authorities are to be subject to the public credibility role of book keeping operation person and users to trust, can be with
Account is matched with user real identification, the opening an account of user account, cancellation can be managed and freezed, the hair of currency can be carried out
Row and recovery.Authorities can be even personal government organs, industry organization, company.Authorities herein are not limited
In certain specific tissue or personal, there can be multiple authorities, be responsible for different business, such as carrying out account management
Authorities, the authorities etc. for carrying out currency management.Book keeping operation person deposits various data and information package for responsible in block chain
Enter the node (cochain can be referred to as) of block chain.Its various relevant information can be saved in block by authorities by book keeping operation person
In chain, the usable account of user carries out the various transactional operations such as payment by block chain.Herein also not to book keeping operation person
Quantity and user account quantity limited, also the concrete form of block chain not to being used is restricted.It is noted that
" digital cash " is only to represent certain unit of account herein, does not limit the concrete form of digital cash, and it can be encryption
The legal tender, or the generation by distribution such as industry, individuals of digital cash or the distribution of legal sense Shang You government organs
Coin, virtual coin, game money, integration etc..
As shown in figure 1, authorities can be managed to the account of user.So that account is opened an account as an example, authorities can be with root
According to the account opening request of user, the identity based on user sets up one or more accounts to the user, and these accounts include real
Name account and anonymous account.Wherein User Identity refers to the mark of user real identification, can be uniquely by the mark
User identity is determined, for example, it may be identification card number, passport No., register of company number etc..In one example, can be according to
Predetermined fill rule is filled to User Identity, and to obtain one or more real name accounts, the content of filling can be with
Including but not limited to random number, numbering, character etc..If user will also set up anonymous account, can be to being obtained after filling
Real name account be encrypted, using the ciphertext data after encryption as anonymous account.Authorities can utilize symmetric cryptography or non-
Symmetric encryption method is encrypted to real name account.For example, public key can be used to be encrypted the real name account after filling obtain
To anonymous account, anonymous account is decrypted using private key, so that User Identity is only visible to authorities.And for example,
Authorities can also be encrypted using symmetric key to the real name account obtained after filling, for example with DES, 3DES, IDEA
Scheduling algorithm, and anonymous account is decrypted by the symmetric key.Authorities are responsible for tight keeping to be used for anonymous account
The key being decrypted.The mechanism of opening an account that this real name account and anonymous account are combined, can meet the different demands of user.
For each account for being generated, authorities using the account in itself as public key, using Identity Based Cryptography
Middle private key generating algorithm produces private key corresponding with the account.Identity based encryption (Identity-Base
Cryptography, IBC) it is also asymmetric encryption mechanism, wherein public key can be arbitrary character string or Bit String, by private
Key maker (PKG, private key generations) generates private key corresponding with public key.System is during initializing
Master key and systematic parameter can be automatically generated, then private key generator PKG is based on master key, systematic parameter and user account next life
Into private key corresponding with the user account.Wherein master key is holded in close confidence by authorities, and systematic parameter can be announced by authorities, and
The account private key for being generated is supplied to user via safe and secret channel.
Meanwhile, the information related to user account is sent to authorities the book keeping operation person on block chain, will be with by book keeping operation person
The related information record of user account is in block chain.Or can be before these information are sent using the private key pair of authorities
The open an account text of message of account is signed, and such book keeping operation person is when message is received, it is possible to use the public key of authorities is to receiving
Information in digital signature verified, so as to verify the reliability and validity of the information.After being verified, book keeping operation
Person opens an account message cochain, the completion so that account is opened an account account.In addition, authorities can also be by its public key, for identity-based
The systematic parameter of encryption is stored in block chain by book keeping operation person.
User is after the systematic parameter of private key corresponding with its each account and authorities is received, it is possible to using each
Individual account carries out various digital cash transaction based on block chain, and related Transaction Information is recorded in block chain by book keeping operation person
In.For example, user can be signed using its account private key and systematic parameter to the information for sending, and receive a side of information
Can be using the account of the user in itself and the signature of information of the systematic parameter to being received is verified.In this embodiment,
Using the account of user in itself as public key, corresponding private key is generated using IBC algorithms, it is not necessary to the support of PKI systems, it is not necessary to
The participation of CA, digital certificate etc., the system that reduces is implemented, manages, is runed and maintenance cost.
In addition, when believable third party needs to know the corresponding user real identification of certain account, can enter to authorities
Row requesting query.When authorities approve the request of the trusted third party, if anonymous account, then can be taken care of by authorities
For being decrypted to the account to the key that anonymous account is decrypted, then according to predetermined filling rule from after decryption
Clear data in remove filling information, just can obtain User Identity corresponding with the account.It can be seen that, in reality of the invention
Apply in example, authorities simultaneously need not be safeguarded and preserve any database, such as on correspondence between user account and user identity
The database of relation, so as to both reduce operation cost, reduces the risk of user profile leakage again.And with full energy matries
Digital cash account pattern is compared, and is more beneficial for the criminal offences such as strike money laundering, corruption.
And when using anonymous account, user identity is all for other users in digital cash transaction and book keeping operation person
Anonymous, only authorities could know the true identity of user according to user account, so as to both ensure that digital cash was concluded the business
The transparency and flexibility, and Trading parties can effectively be supervised by authorities, to prevent malfeasant generation.Together
When various information related to user account be also to be preserved using block chain, maintain centre management, transaction cost
Low advantage.
In yet another embodiment, authorities can be with currency control distribution, currency recovery etc..Authorities can will be some
The currency of quantity is injected in one or more accounts, it is also possible to deduct a number of goods by force from one or more accounts
Coin.So occur malfeasance or private key for user it is stolen when, recovery section currency can be flowed to according to currency or be in time
User recovers loss.
For example, when needing to perform note issuance operation, authorities can for example generate note issuance message and be issued
Go out.Note issuance message may include text and the signature (as shown in table 1) to text.Text can be including but not limited to currency
Distribution message identifier, the public key of authorities, account and amount of money issued list (indicating each account to how much injects),
The information such as note issuance time.Authorities are signed using its private key to note issuance message text, obtain the number to text
Word is signed.
Table 1
Correspondingly, book keeping operation person when the message is received, it is necessary to verify the validity of note issuance message, checking content includes
But the authorities public key being not limited in note issuance message has lack of competence, validity of digital signature etc..After being verified, book keeping operation
Person completes note issuance message cochain, note issuance operation.
When needing to carry out currency reclaimer operation, authorities can for example generate currency and reclaim message and issued out
Go.Currency reclaims message includes text and the signature (as shown in table 2) to text.Text can be reclaimed including but not limited to currency
Message identifier, authorities public key, account and currency yield list (indicating from how much each account deducts), currency are returned
The information such as between the time receiving.Authorities reclaim message text and sign using authorities private key to currency, obtain the numeral to text
Signature.
Table 2
Correspondingly, book keeping operation person when message is received, it is necessary to verify currency reclaim message validity, checking content include but
The authorities public key being not limited in currency recovery message has lack of competence, the validity of digital signature (for example to can be used authorities public
Key is verified to the digital signature verification algorithm in message) etc..After being verified, currency is reclaimed message cochain by book keeping operation person,
Currency is reclaimed and completed.
Hereinbefore it is required for making when authorities carry out the operations such as account foundation, note issuance, currency recovery or business
The public key and private key being digitally signed with authorities.In one embodiment, authorities can be in all of operation or business
It is middle to be signed using with a pair of public keys and private key.In a preferred embodiment, authorities can be in different operations or business
It is middle using different unsymmetrical key to signing, and different rivest, shamir, adelmans can be used, such as RSA,
Elgamal, SM2, elliptic curve encryption algorithm (ECC) etc..In another embodiment, authorities can also be in same operation or industry
Signed using different private keys in business.For example, authorities may include multiple relatively independent entities, can allow two with
On different entity (for example, bank or other financial institutions) perform note issuance operation, different entities are carrying out currency hair
Signed using different private keys during row.Again for example, it is also possible to be different entities be each responsible for account foundation, account management,
Business or the operations such as note issuance, currency recovery.So each entity can independently fulfil all or part of duty of authorities
Duty, so that the management of digital cash is more convenient and flexible.Authorities for example can be the mechanism with public credibility, tissue,
The financial institution of alliance that company or multiple entity are constituted etc., or distribution digital cash, tissue or company etc..
In addition, during authorities can also issue authorities parameter to block chain, the authorities parameter can include authorities
The title and systematic parameter of the Identity based encryption algorithm used when user account is set up, authorities are not for of the same trade or business
Title of symmetric encipherment algorithm that the public key, and/or authorities that business is signed are used when anonymous account is set up etc..But
Master key, the authorities that authorities are used when user account is set up by Identity based encryption algorithm are for different business
The private key and/or authorities signed set up the symmetric key used during anonymous account then by the tight keeping of authorities oneself,
Can absolutely not reveal.Book keeping operation person and user can be loaded into being supplied in the equipment of oneself after authorities issue its parameter
Subsequently use.
In yet another embodiment, authorities can also carry out that account is freezed, account defrosting, the operation such as account closing are frozen
Tie, thaw or destroy one or more accounts specified.Frozen account can not carry out some business, and frozen account is only
Have after being defrosted, can just carry out regular traffic.For example, needing to freeze, solve in response to request or specifically when authorities
When freezing or destroy some accounts, the information related to these operations can be generated and released.Book keeping operation person will receive phase
Information cochain is answered, to complete freezing, thaw or destroying for account.For example, when authorities are entered in response to request to some accounts
During marketing family, account closing message can be generated and released.The message for example may include account closing message identification
Accord with, need the information such as account list, cancellation time, the digital signature of authorities of cancellation.When book keeping operation person receives account closing message,
By the public key verifications digital signature of authorities, to verify the validity of the cancellation message, after being verified, book keeping operation person is by account
Cancellation message cochain, account closing is completed.
In above-mentioned digital cash management system, user can using its account and respective private keys based on block chain carry out with
The related various operations of moneytary operations.By taking currency payment as an example, user can be by the money in oneself account to one or more accounts
Shift at family.For example, user can generate currency and paying message and being released.Currency pays message includes text and to text
Signature (as shown in table 3).Text can pay message identifier, payer account, beneficiary account including but not limited to currency
The information such as family and currency payment amount list (indicate and how much is shifted to each beneficiary account), currency time of payment.User
The systematic parameter of the corresponding private key of oneself account and authorities issue can be used, paying message text to currency signs, and obtains
To the digital signature to text.
Table 3
Correspondingly, book keeping operation person's checking currency pays the validity of message, and checking content includes but is not limited to currency and pays report
The validity of digital signature (is for example tested as public key using payer account with reference to the systematic parameter of authorities issue in text
Card digital signature), payer account balance whether sufficient (for example, can obtain payer account balance from block chain), payment
Square account whether in serviceable condition (such as from block chain obtain payer account status, including but not limited to whether by
Freeze, whether opened an account, whether by cancellation etc.), all accounts of beneficiary whether all in serviceable condition (i.e. from block chain
Obtain beneficiary account status, including but not limited to whether opened an account, it is whether frozen, whether by cancellation etc.) etc..It is verified
Afterwards, the currency is paid message cochain by book keeping operation person, and currency pays and completes.
Equally, the information produced for other operations of user, book keeping operation person is in the association message cochain for operating these
When, can also go to verify the state (for example whether frozen, whether by cancellation etc.) of wherein each side's account, if be related in message
Account have in being not available for corresponding operating state, then refuse the message cochain.Wherein the state of account can be by block
The historical information of chained record is obtained, because inherently one distributed account book that have recorded all operations of block chain.Block chain
In " state ", be not present in a real state variable, but deduced by the history recorded in block chain.Example
Such as, transactions history is recalled by block chain, is found in the presence of a message that freezes to A accounts, but than this do not freeze message more
The new defrosting message to A accounts, then A accounts are in frozen state.
Fig. 2 gives the schematic flow sheet of digital cash management method according to an embodiment of the invention.The method master
To include being monitored by authorities and being received request, in response to the different operations of different request execution, and will be with by book keeping operation person
In the related information write-in block chain of performed operation.
More specifically, when the account opening request of user is received, performing the following steps：
S1：By authorities in response to user's request, the identity based on user sets up one or more accounts to the user
Family.As described above, these accounts may include real name account and anonymous account.Can be according to predetermined fill rule to user
Identity is filled, to obtain one or more real name accounts, it is also possible to which the real name account to being obtained after filling is added
It is close, using the ciphertext data after encryption as anonymous account.As introduced above, authorities can be utilized and symmetrically or non-symmetrically added
Decryption method is encrypted to real name account, to obtain anonymous account；Authorities are responsible for tight keeping simultaneously is used for anonymous account
The key being decrypted.
S2：Produced using Identity based encryption algorithm in itself as public key using each account for being generated by authorities
Life private key corresponding with the account.For example, being based on user's account by private key generator (PKG) using Identity based encryption algorithm
Family, master key, systematic parameter is come the corresponding private key of the account that generates with provided.The private key for being generated need to be via safe and secret canal
Road is supplied to user.
S3：By authorities by the information record related to the account set up in block chain, and the account that will be set up
And corresponding private key is supplied to user.The book keeping operation person that message is sent on block chain, book keeping operation for example, authorities generation account is opened an account
After person is verified to receiving message, account message of opening an account is counted into (i.e. cochain), the completion so that account is opened an account in block chain.
In yet another embodiment, the method also include by authorities in response to request, by authorities keeping be used for
The key that anonymous account is decrypted is decrypted to anonymous account, it is then bright from after decryption according to predetermined filling rule
Filling information is removed in literary data, so as to obtain User Identity corresponding with the account.
In yet another embodiment, the method also includes being asked in response to note issuance by authorities, will be a number of
Currency injects one or more accounts, and deducts some numbers by force from one or more accounts in response to currency recovery request
The step of currency of amount.As described above, when needing to perform note issuance operation, authorities can generate note issuance message
And released.Book keeping operation person after the validity for receiving the message and verifying note issuance message, by note issuance report
Literary cochain.When needing to carry out currency reclaimer operation, authorities can for example generate currency and reclaim message and released.
Currency is reclaimed message cochain by book keeping operation person after receiving message and verifying the validity that currency reclaims message.
In yet another embodiment, the method is also included for each business come for authorities specify different asymmetric close
The step of key pair.Different unsymmetrical key are distributed to being digitally signed to authorities in different business, and can
To use different rivest, shamir, adelmans.In another embodiment, authorities can also be used in same operation or business
Different private key is signed.
In yet another embodiment, the method also includes the step of authorities parameter is distributed into block chain.The authorities
Parameter can include that the title and system of the Identity based encryption algorithm that authorities are used when user account is set up are joined
Used when anonymous account is set up symmetrical of number, public key that authorities are signed for different business, and/or authorities plus
Title of close algorithm etc..
In yet another embodiment, the method also includes by authorities in response to entering to the account that one or more are specified
The operations such as row account is freezed, account defrosting, account closing.When authorities in response to request or it is specific need freezing, thaw or
When destroying some accounts, the information related to these operations can be generated and released.Book keeping operation person will receive corresponding letter
Breath cochain, to complete freezing, thaw or destroying for account.
In yet another embodiment, the method also include by book keeping operation person receive it is relevant with its account operation from user
Information when, check the state of the account involved by the information to determine whether the information record to block chain based on block chain
In, the state of wherein account includes whether to be frozen, thaw and/or destroy.
It should be understood that it is above-mentioned such as set up account, note issuance and recovery, the operation freezed and thaw etc of account is only
For example, rather than any limitation is carried out to the business of authorities, can according to the actual requirements change or customize different industry
Business.
Although the present invention has been described by means of preferred embodiments, however the present invention be not limited to it is described here
Embodiment, done various changes and change is also included without departing from the present invention.
Claims (11)
1. a kind of digital cash management system, the system includes authorities and book keeping operation person, the wherein distribution of authorities currency control
With recovery and management user account, the information that needs are preserved is signed and provided it to book keeping operation person, book keeping operation person is being tested
The information for preserving will be needed to charge to block chain after signed certificate name in；And
Wherein user account includes being based on the one or more real names and/or anonymity of User Identity foundation by authorities
Account, the corresponding private key of each account is, with the account as public key, to be generated by Identity based encryption method by authorities
's.
2. system according to claim 1, wherein authorities use same for the information that different operating or business are produced
Private key is signed.
3. system according to claim 1, wherein authorities include multiple unsymmetrical key pair for signing.
4. system according to claim 3, wherein authorities use different for the information that different operating or business are produced
Private key signed.
5. system according to claim 3, wherein authorities use different for the information that same operation or business are produced
Private key signed.
6. the system according to foregoing any claim, wherein real name account be by according to pre-defined rule to user identity
Mark is filled and generates, and anonymous account is generated by being encrypted to real name account.
7. system according to claim 1, wherein the authorities are in response to asking a number of currency injection one
Individual or multiple destiny accounts and deduct a number of currency by force from one or more accounts.
8. system according to claim 1, wherein the authorities are in response to asking to enter one or more destiny accounts
Row freezes, thaws or destroys.
9. system according to claim 8, wherein the book keeping operation person receive it is relevant with its account operation from user
Information when, check the state of the account involved by the information to determine whether the information record to block chain based on block chain
In, the state of wherein account includes whether to be frozen, thaw or destroy.
10. system according to claim 6, wherein the authorities are decrypted in response to request to anonymous account, and
Filling content is removed from the plaintext obtained after decryption according to the predetermined fill rule, to obtain use corresponding with the account
Family identity.
A kind of 11. digital cash management methods, including：
By authorities currency control distribution and recovery and management user account, and to need preserve information carry out signature and
Issue；
The information that authorities are issued is received by book keeping operation person, during the information for preserving will be needed to charge to block chain after verifying the signature；
Wherein user account includes being based on the one or more real names and/or anonymity of User Identity foundation by authorities
Account, the corresponding private key of each account is, with the account as public key, to be generated by Identity based encryption method by authorities
's.
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| CN201710080527.3A CN106910072A (en) | 2017-02-15 | 2017-02-15 | Digital cash management method and system |
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