CN106934605A - User identity management method and system in digital cash - Google Patents
User identity management method and system in digital cash Download PDFInfo
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- CN106934605A CN106934605A CN201710080502.3A CN201710080502A CN106934605A CN 106934605 A CN106934605 A CN 106934605A CN 201710080502 A CN201710080502 A CN 201710080502A CN 106934605 A CN106934605 A CN 106934605A
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- user
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- user account
- account
- private key
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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
- G06Q20/04—Payment circuits
- G06Q20/06—Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme
- G06Q20/065—Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme using e-cash
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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
-
- 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
Abstract
The present invention provides user identity management method and system in digital cash, including authorities and book keeping operation person, wherein authorities are in response to user's request, User Identity is encrypted to set up user account, with the user account as public key, corresponding with the user account private key of generation, and the information related to the user account is supplied to book keeping operation person in block chain and by its cochain, and the user account and corresponding private key are supplied to user.So, realize digital cash trade mode transparent to authorities and anonymous to domestic consumer, user identity is effectively supervised using authorities, but extra supervision cost 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 the method and system of user identity management in digital cash, more particularly to digital cash.
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 is using based on block chain skill
The distributed book keeping operation mode of art preferably solves decentralization, goes trust problem, and with can not distort and cryptographic security
The features such as.
By taking bit coin as an example, relative to conventional currency, bit coin transaction cost is very low, without third party clearing and supervision,
The point to point network of decentralization is taken, confirmation is independently traded by the network user.And the anonymity of bit coin causes ratio
The transaction of special coin is more safe and transparent.Therefore, bit coin is received by increasing people.But this kind of digital goods of encryption
Coin transaction is full energy matries, and user is disguised strong, it is difficult to follow the trail of, thus bit coin also usually with foreign exchange transfer, illegal money laundering, probably
It is afraid of the illegal act tight associations such as tissue financing, tax evasion, so that various countries supervise layer this kind of digital cash is vigilant very much, this
Its development is restricted to a certain extent.
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 digital cash supervised
Method, effective managing user identities while existing digital cash advantage is kept.
The purpose of the present invention is achieved through the following technical solutions：
On the one hand, the invention provides user identity management method in a kind of digital cash, including：
By authorities in response to user's request, User Identity is encrypted to set up user account；
By authorities with the public key that the user account is the user, private key corresponding with the user account is generated；
The information related to the user account is supplied to the book keeping operation person in block chain by authorities, and by the user
Account and corresponding private key are supplied to user.
In the above-mentioned methods, the authorities can be added using symmetrically or non-symmetrically encryption method to User Identity
It is close, wherein the key for being decrypted to User Identity is visible only to authorities.
In the above-mentioned methods, the authorities can have the unsymmetrical key pair for being digitally signed.
In the above-mentioned methods, the authorities can be generated corresponding with the user account using Identity Based Cryptography
Private key.
In the above-mentioned methods, the authorities can have only to its visible master key and disclosed systematic parameter, institute
Stating the corresponding private key of user account can be generated based on the master key, systematic parameter and the user account.
In the above-mentioned methods, may also include and the information related to the user account is being supplied to block chain by authorities
In book keeping operation person before, described information is signed with the private key of authorities.
In the above-mentioned methods, may also include and its public key and the systematic parameter are supplied to book keeping operation person and by remembering by authorities
Account person is by its cochain.
In the above-mentioned methods, may also include by authorities in response to request, user account is decrypted to obtain and this
The corresponding User Identity of user account.
Another aspect, the invention provides user identity management system in a kind of digital cash, the system includes authority
Side and book keeping operation person, wherein authorities are configured to respond to user's request, to User Identity encryption to set up user account,
With the user account as public key, corresponding with user account private key is generated, and by the letter related to the user account
Breath is supplied to the book keeping operation person in block chain and by its cochain, and the user account and corresponding private key are supplied into user.
In said system, the authorities can be added using symmetrically or non-symmetrically encryption method to User Identity
It is close, wherein the key for being decrypted to User Identity is visible only to authorities.
In said system, the authorities can have the unsymmetrical key pair for being digitally signed.
In said system, the authorities can be generated corresponding with the user account using Identity Based Cryptography
Private key.
In the above-mentioned methods, the authorities can have only to its visible master key and disclosed systematic parameter, institute
Stating the corresponding private key of user account can be generated based on the master key, systematic parameter and the user account.
In said system, authorities can be in the note during the information related to the user account is supplied into block chain
Before account person, described information is signed with the private key of authorities.
In said system, its public key and the systematic parameter can be supplied to book keeping operation person and by book keeping operation person general by authorities
Its cochain.
In said system, authorities can be decrypted to obtain and user's account in response to request to user account
The corresponding User Identity in family.
Compared with prior art, the advantage of the invention is that：
User identity is effectively supervised using authorities, digital goods transparent to authorities and anonymous to domestic consumer is realized
Coin trade mode, but extra supervision cost is not introduced, and implementation, O＆M cost are reduced, service efficiency is improve,
Existing digital cash is maintained while various illegal acts caused by effectively prevent due to digital cash strong controllable
The features such as decentralization management, low and flexible transaction cost.
Brief description of the drawings
Embodiments of the present invention is further illustrated referring to the drawings, wherein：
Fig. 1 is user identity management system structure diagram in digital cash according to the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of user identity management method in digital cash 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 user identity management system in digital cash according to an embodiment of the invention
Figure.The system relates generally to authorities, book keeping operation person and user.Wherein authorities are the public credibility for being subject to book keeping operation person and users to trust
Role, can match anonymous account and user identity, can manage the opening an account of user account, cancellation and freeze.Authority
Side can also have for the asymmetric public key that is digitally signed and private key and the master key for Identity-based encryption and
Systematic parameter (is described below).Book keeping operation person is the responsible section that various data and information package are stored in block chain in block chain
Point.Can be saved in its various relevant information in block chain by book keeping operation person by authorities, and user can be used account to pass through block
Chain carries out the various transactional operations such as payment.
More specifically, when authorities receive user open an account apply and pass through after, User Identity (userID) is entered
Row encryption, using the ciphertext after encryption as the account (Account) of user.Wherein User Identity refers to user real identification
Mark, user identity can uniquely be determined by the mark, for example, it may be identification card number, passport No., register of company number
Etc..In one example, authorities can be encrypted using symmetric encipherment algorithm to User Identity, for example with
DES, 3DES, IDEA scheduling algorithm, are encrypted and decrypted by symmetric key to User Identity.In another example,
Authorities can also be encrypted using asymmet-ric encryption method to User Identity, such as using public key to User Identity
It is encrypted, account is decrypted using private key, so that User Identity is only visible to authorities.Authorities are responsible for tight
Keeping is used for the key to User Identity decryption.
After the account for obtaining user, authorities using the account of user as public key, using Identity Based Cryptography
Private key generating algorithm produce private key corresponding with the user 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.Private key generator PKG is first
Master key and systematic parameter can be automatically generated during beginningization, master key is then based on, systematic parameter and user account come generate with
The corresponding private key of account for being provided.Wherein master key is holded in close confidence by authorities, and systematic parameter can be announced by authorities, and institute
The private key of generation 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.For example, authorities will such as user account, time or the like information of opening an account
Book keeping operation person on block chain is sent to by network.Or the private key of authorities can be utilized before these information are sent to this
A little information are signed, and such book keeping operation person is when relevant information is received, it is possible to use the public key of authorities enters to the signature for receiving
Row checking, so as to verify the reliability and validity of the information.After being verified, by the information related to user account
Chain.In addition, authorities can be stored in block chain by its public key, for the systematic parameter of Identity-based encryption by book keeping operation person
In.
User is after private key corresponding with its account and systematic parameter is received, it is possible to be based on block chain using its account
Various digital cash transaction are carried out, related Transaction Information is recorded in block chain by book keeping operation person.For example, user can make
The information for sending is signed with its account private key and systematic parameter, and the side for receiving information can use the account of the user
Family is in itself and systematic parameter is verified to the signature for being received.
In addition, when believable third party needs to know the corresponding user real identification of user account, can enter to authorities
Row requesting query, if authorities have passed through the request of the trusted third party, can be used for user identity mark by authorities
The key for knowing decryption is decrypted to user account, just obtains User Identity corresponding with the user account.It can be seen that, at this
In inventive embodiment, authorities simultaneously need not be safeguarded and preserve any database, such as on user account and user identity
Between corresponding relation database, so as to both reduce operation cost, the risk of user profile leakage is reduced again.
From above-described embodiment as can be seen that other users and book keeping operation person are during user identity is concluded the business for digital cash
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.And
And although authorities are introduced in such scheme, do not increase extra system maintenance, management and supervision cost, authorities
Only need to protect oneself for the private key being digitally signed and the master key for Identity-based encryption, with user
The related various information of account are also to be preserved by block chain, thus maintaining centre management, transaction cost low
Advantage.
The flow that Fig. 2 gives user identity management method in digital cash according to an embodiment of the invention is illustrated
Figure.The method mainly comprises the following steps：
S1：By authorities in response to user's request, for the user sets up account, the account is that User Identity is added
Ciphertext after close.As described above, authorities can be encrypted using symmetric encipherment algorithm to User Identity, for example
Using DES, 3DES, IDEA scheduling algorithm, User Identity is encrypted and decrypted by symmetric key.Again for example, authority
Side can also be encrypted using asymmet-ric encryption method to User Identity, and User Identity is carried out using public key such as
Encryption, is decrypted, to account using private key so that User Identity is only visible to authorities.Authorities are responsible for tight keeping
For the key decrypted to User Identity.
S2：By authorities using the account of user as public key, private key corresponding with the account is generated.Can be using based on body
Part AES user account, master key are based on by private key generator (PKG), systematic parameter is come the account that generates with provided
The corresponding private key in family.The private key for being generated need to be supplied to user via safe and secret channel.
S3：The information related to the account set up is recorded in block chain by book keeping operation person by authorities, and by institute
The account of foundation and corresponding private key are supplied to user.For example, authorities will such as user account, time or the like information of opening an account
Book keeping operation person on block chain is sent to by network.Or the private key of authorities can be utilized before these information are sent to this
A little information are signed, and such book keeping operation person is when relevant information is received, it is possible to use the public key of authorities enters to the information for receiving
Row checking, so as to verify the reliability and validity of the information.After being verified, by the information related to user account
Chain.In addition, authorities will can also be digitally signed public key, be disclosed in network for the systematic parameter of Identity-based encryption
Above and/or it is stored in block chain by book keeping operation person.
In other embodiments, the method can also include by authorities in response to trusted third party request, to user
The step of account is decrypted to obtain User Identity corresponding with the user account.
It should be understood that authorities can be the alliance that the mechanism with public credibility, tissue, company or multiple entities are constituted
Etc., or the financial institution of distribution digital cash, tissue or company etc..
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. user identity management method in a kind of digital cash, including：
By authorities in response to user's request, User Identity is encrypted to set up user account；
By authorities with the public key that the user account is the user, private key corresponding with the user account is generated；
The information related to the user account is supplied to the book keeping operation person in block chain by authorities, and by the user account
And corresponding private key is supplied to user.
2. method according to claim 1, wherein the authorities using symmetrically or non-symmetrically encryption method to user's body
Part mark encryption, wherein the key for being decrypted to User Identity is visible only to authorities.
3. method according to claim 1, wherein the authorities are generated and the use using Identity Based Cryptography
The corresponding private key of family account.
4. method according to claim 3, wherein the authorities have only to its visible master key and disclosed
Systematic parameter, the corresponding private key of the user account is generated based on the master key, systematic parameter and the user account
's.
5. the method according to claim 1-4, wherein the authorities have it is asymmetric close for what is be digitally signed
Key pair.
6. method according to claim 5, also including being provided by the information related to the user account by authorities
Before to the book keeping operation person in block chain, described information is signed with the private key of authorities.
7. method according to claim 5, also including its public key and the systematic parameter are supplied into book keeping operation by authorities
Person and by book keeping operation person by its cochain.
8. method according to claim 1 and 2, also, in response to request, is decrypted including by authorities to user account
To obtain User Identity corresponding with the user account.
9. user identity management system in a kind of digital cash, including：
Authorities and book keeping operation person,
Wherein authorities are configured to respond to user's request, to User Identity encryption to set up user account, with described
User account is public key, generates private key corresponding with the user account, and the information related to the user account is provided
To the book keeping operation person in block chain and by its cochain, and the user account and corresponding private key are supplied to user.
10. system according to claim 9, wherein the authorities are generated and the use using Identity Based Cryptography
The corresponding private key of family account.
11. methods according to claim 9, wherein the authorities using symmetrically or non-symmetrically encryption method to user's body
Part mark encryption, wherein the key for being decrypted to User Identity is visible only to authorities.
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| CN201710080502.3A CN106934605B (en) | 2017-02-15 | 2017-02-15 | User identity management method and system in digital currency |
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| CN201710080502.3A CN106934605B (en) | 2017-02-15 | 2017-02-15 | User identity management method and system in digital currency |
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| CN107819753A (en) * | 2017-10-31 | 2018-03-20 | 捷德（中国）信息科技有限公司 | Not exclusively anonymous block chain transaction system and method |
| CN108092778A (en) * | 2017-12-28 | 2018-05-29 | 中国人民银行数字货币研究所 | Method and system based on digital cash wallet inquiry interlock account |
| CN108566275A (en) * | 2018-04-20 | 2018-09-21 | 中国联合网络通信集团有限公司 | Identity identifying method, device and block chain node |
| CN108737435A (en) * | 2018-05-30 | 2018-11-02 | 阿里巴巴集团控股有限公司 | A kind of account initial method and device |
| CN108809953A (en) * | 2018-05-22 | 2018-11-13 | 飞天诚信科技股份有限公司 | A kind of method and device of the anonymous Identity certification based on block chain |
| CN109660485A (en) * | 2017-10-10 | 2019-04-19 | 中兴通讯股份有限公司 | A kind of authority control method and system based on the transaction of block chain |
| CN109962777A (en) * | 2017-12-26 | 2019-07-02 | 航天信息股份有限公司 | The key in block catenary system is permitted to generate, obtain the method and apparatus of key |
| CN110278256A (en) * | 2019-06-13 | 2019-09-24 | 思力科（深圳）电子科技有限公司 | Block chain node accesses cochain method, relevant device and system |
| WO2020024465A1 (en) * | 2018-08-01 | 2020-02-06 | 中国科学院数据与通信保护研究教育中心 | Block chain data traceability method |
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| CN112016119A (en) * | 2020-08-10 | 2020-12-01 | 四川九洲电器集团有限责任公司 | Autonomous identity management method based on block chain |
| WO2021000578A1 (en) * | 2019-07-04 | 2021-01-07 | 创新先进技术有限公司 | Method, device and apparatus for creating user in chained-block account book |
| CN112823350A (en) * | 2018-10-12 | 2021-05-18 | 黑莓有限公司 | Method and system for a monocular public key for a public ledger |
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| CN112823350A (en) * | 2018-10-12 | 2021-05-18 | 黑莓有限公司 | Method and system for a monocular public key for a public ledger |
| CN110278256A (en) * | 2019-06-13 | 2019-09-24 | 思力科（深圳）电子科技有限公司 | Block chain node accesses cochain method, relevant device and system |
| US10791122B2 (en) | 2019-07-04 | 2020-09-29 | Alibaba Group Holding Limited | Blockchain user account data |
| WO2021000578A1 (en) * | 2019-07-04 | 2021-01-07 | 创新先进技术有限公司 | Method, device and apparatus for creating user in chained-block account book |
| CN112016119A (en) * | 2020-08-10 | 2020-12-01 | 四川九洲电器集团有限责任公司 | Autonomous identity management method based on block chain |
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