CN111985927A - Block chain address authentication method and block chain transaction method based on social network - Google Patents
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Abstract
The invention discloses a block chain address authentication method and a block chain transaction method based on a social network, wherein the block chain address authentication method comprises the following steps: generating a registration statement for the block chain account address of the user according to the social platform associated with the user; correspondingly publishing the registration statement to a social account of the user in a social platform, and generating an address statement after the publication is completed; the address statement comprises a block chain account address of the user and a social account address corresponding to the user in each social platform; the receiver extracts a social account address from the address statement provided by the sender, accesses the social account address, acquires a registration statement issued by the sender in the social account, and verifies the validity of the blockchain account address provided by the sender; according to the invention, the binding relationship between the user and the block chain account address is verified through the social network, the historical information and the openness of the social account number can guarantee the authenticity of the identity-address, and the safety of the block chain transaction can be greatly improved.
Description
Technical Field
The invention belongs to the technical field of block chains, and particularly relates to a method for authenticating and trading a block chain address by using a social network of a user.
Background
The blockchain is a distributed transaction system based on consensus algorithm, which maintains an increasing data record list, the record lists are linked end to end through a cryptographic hash algorithm, and the consistency management of the final data is completed through synchronization and consensus of network nodes. The block link combines a distributed network, a consensus algorithm and an encryption algorithm, is decentralized in nature, and has the characteristics of non-falsification, traceability, public transparency and the like. The data in the block is maintained by different network nodes collectively, so that a block chain provides a credible infrastructure for the industry and has wide application prospect.
The blockchain is based on transactions identified by a string of string addresses that have no specific meaning. Taking bitcoin as an example, a bitcoin address (account) is a string of 26-bit to 34-bit letters and numbers. The character string is calculated by the public key of the user, and has no specific meaning. The transfer activity on the blockchain occurs between two addresses, so that the transfer to the other account is to the address where the account is located. For example, if A were to transfer to B, it would mean that A would use its own account to transfer to an account identified by the address of B. Similar to the inter-bank transfer, a will know B's bank card number and transfer the money into the account identified by the card number to transfer to B. But the safety precondition is that A can determine that the card number provided by A really belongs to B; similarly, in a blockchain, the account holder initiating the transfer needs to authenticate that the address provided by himself does indeed belong to B. Then, due to the meaningless nature of the address, a catastrophic error caused by an authentication abnormality often occurs at the time of transfer. Transfer address authentication in a blockchain is essentially a proof of correspondence between an address and a user principal. In short, the focus of the problem is how the receiver proves to the sender the correctness of its address in the responsible network environment.
In order to solve the problem of address authentication, a series of solutions have been proposed. Common schemes such as endorsement schemes based on digital currency exchanges, single sign-on authentication, multi-factor authentication schemes, authentication based on user characteristics, and the like. An endorsement scheme (such as Bitstamp, localbitcois, Coincola) based on a digital currency exchange and a third party organization with a centralized single sign-on authentication requirement properly maintain the mapping relationship between users and addresses. The information of the account and the identity is essentially stored on a trusted third party platform. When the account is established, the user uploads and stores personal information of the user. However, there are times when false authentications due to third party platform security issues occur. For example, a digital exchange, Bitstamp, localbitcois, Coincola and the like, requires a user to upload information capable of proving personal identity when registering an account, the exchange reviews the authenticity of the user identity, the exchange serves as a centralized information management server to store the information uploaded by the user after the user passes the review, and authentication of the user identity and a block chain address is completed at this time. However, in this method, the centralized exchange acts as a trusted third party authority, and the data verification method depends on the credibility of the third party. Once the credibility of the third party is difficult to be guaranteed, providing false identity address information and even guarding against theft will result in property loss of the user. And the centralized mechanism is a single storage authentication mechanism, and if the database or other related facilities are attacked, the information of the user can be tampered maliciously. Multi-factor authentication schemes and user feature-based authentication have not been substantially generalized in blockchain systems because of the complexity of their schemes.
Disclosure of Invention
The invention provides a social network-based block chain address authentication method and a block chain transaction method, aiming at solving the problems that the reliability is difficult to guarantee and the transaction safety is low in the existing block chain account address authentication mode depending on a centralized third-party platform.
To achieve the above object, according to an aspect of the present invention, there is provided a social network based block link address authentication method, including:
generating corresponding registration statements for the user block chain account address according to at least one social platform related to the user, wherein each registration statement comprises the block chain account address of the user and a website of one social platform as a release object;
correspondingly publishing the registration statement to a social account of the user in the social platform, and generating an address statement after the publication is completed; the address statement comprises a block chain account address of the user and corresponding social account addresses of the user in all social platforms;
and the receiver extracts a social account address from the address statement provided by the sender, accesses the social account address, acquires a registration statement issued by the sender in the social account, and verifies the validity of the blockchain account address provided by the sender.
Preferably, in the block link address authentication method, an API interface for external calling is provided in the address declaration, and the recipient accesses the social account address in the address declaration through the API interface to obtain a registration declaration issued by the sender in the social account.
Preferably, in the block link address authentication method, when the number of social platforms associated with the user is more than one, each registration statement further includes a weight value of the social platform;
accessing the social account address and obtaining a registration statement issued by the sender in the social account, and verifying the validity of the blockchain account address provided by the sender specifically comprises:
and obtaining the access result of each social account website, carrying out weighted average on the access result according to the weight value, and judging that the block chain account address provided by the sender is valid when the obtained weighted average value is higher than a preset value.
Preferably, in the block link address authentication method, the obtaining of the access result of each social account website and the weighted average of the access results specifically include:
in the formula (I), the compound is shown in the specification,
represents a weighted average; omegaiRepresenting the access result of the ith social account website, and if the ith social account website is successfully accessed, omega i1 is ═ 1; otherwise, ωi＝0；xiRepresenting the weight value of the social platform corresponding to the ith social account website; n represents the number of social platforms.
Preferably, in the block chain address authentication method, the address statement is stored and transmitted in a json file or a two-dimensional code.
Preferably, the block chain address authentication method further includes:
responding to a new request of a user, receiving a new social platform provided by the user and generating a corresponding address statement; and issuing the address statement to a social account address corresponding to the user in the newly added social platform, and updating the address statement of the user after the issuing is finished.
Preferably, the block chain address authentication method further includes:
configuring a corresponding revocation statement for a block chain account address of a user, wherein the revocation statement comprises respective revocation conditions corresponding to all or part of social platforms;
and traversing the revocation declaration of each user, and when any social platform in the revocation declarations meets the corresponding revocation condition, automatically deleting the registration declaration issued in the social account address corresponding to the social platform and updating the address declaration of the user.
Preferably, the block chain address authentication method further includes:
receiving a revocation message provided by a user, wherein the revocation message comprises a social account address to be revoked;
and deleting the registration statement issued in the social account address according to the revocation message and updating the address statement of the user.
Preferably, in the block chain address authentication method, the revocation statement further includes a first verification code; the revocation message provided by the user also includes a second authentication code,
and comparing the first verification code with the second verification code to verify the authenticity of the revocation message, if the first verification code and the second verification code have a preset mapping relation, indicating that the revocation message is authentic and authorized, passing the verification and executing deletion operation based on the revocation message.
According to another aspect of the present invention, there is also provided a blockchain transaction method, including any one of the blockchain address authentication methods described above, further including: after the blockchain account address is verified to be valid, the recipient transfers the blockchain account address.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
(1) according to the invention, the binding relationship between the user and the block chain account address is verified through the social network, the historical information and the openness of the social account number can guarantee the authenticity of the identity-address, and the historical information needs to be imitated even if the user pretends to be fake, so that the cost is high and the difficulty is high, and therefore, the safety of the block chain transaction can be greatly improved.
(2) The invention does not depend on the reliability of a centralized third-party platform, does not need to disclose additional personal information to the third-party platform, and does not need to worry about the leakage of personal privacy information.
(3) The invention does not need the verification process of the third-party platform on the personal information, has simple and convenient operation, saves time and reduces cost.
(4) The verification method provided by the invention is similar to public display, the social platform used by the user is not limited, the manual assistance of friends is not needed, the authentication process only relates to the account holder and the transfer initiator, and the usability is strong.
(5) Most social websites have a keyword retrieval function, and are convenient to search.
Drawings
FIG. 1 is a flowchart of a social network-based block link address authentication method according to an embodiment of the present invention;
FIG. 2 is an illustration of an association between a blockchain account address and a social platform provided by an embodiment of the invention;
FIG. 3 is an address declaration in json format provided by an embodiment of the invention;
FIG. 4 is a diagram illustrating address issuance and address revocation according to an embodiment of the present invention;
fig. 5 is a simplified flowchart of a social network-based blockchain transaction method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Various authentication methods commonly used at present essentially transfer the responsibility of authentication from an authentication path with lower reliability to a third-party platform which has established a reliable account-holder correspondence or a method which can reliably provide authentication. In the context of blockchain transactions, the address is claimed using an account that can be assured to be "this person" because there is no guarantee that this person claims the address. However, the credibility of the centralized third-party platform is difficult to guarantee in practice, and the user information is leaked or property loss of the user is caused once a malicious attack is suffered.
The authentication method based on the social network, provided by the invention, utilizes all the large social account numbers of the account holder to publish the account address of the user to the social account owned by the user, essentially, the social platform verifies the binding relationship between the address and the person, and a plurality of accounts are published uniformly and mutually authenticated to increase the security. Since the social account of the user usually already contains personal information and historical data published in the past, even a friend relationship, whether the account belongs to the purported person can be judged through the information such as the activity degree, the published information quality and style and the like of a social account, and the identity is verified/easily verified to some extent. The more social accounts issuing the blockchain account address, the higher the information credibility, and because an attacker is difficult to break through all account passwords of the same user and tamper, the transaction safety is greatly improved.
Example one
Fig. 1 is a flowchart of a social network-based block link address authentication method provided in this embodiment, and referring to fig. 1, the method includes the following steps:
s1: generating corresponding registration statements for the block chain account address of the user according to at least one social platform associated with the user, wherein each registration statement comprises the name of the user, the block chain account address and the website of one social platform as a release object;
after the user registers the blockchain account, the user obtains the blockchain account address, and the embodiment does not limit the blockchain product and the registration mode of the blockchain account address; as some specific examples, the blockchain may be any platform such as bitcoin, etherhouse, etc.; the registration and acquisition of the blockchain account address can be realized by an online registration mode or an offline registration mode.
Acquiring one or more social platform websites provided by a user and associated with a blockchain account address, and generating text information about the blockchain account address, wherein in a specific example, the text information includes registration statements of the blockchain account address, and each social platform corresponds to one registration statement; table 1 is an example of a registration declaration provided by the present embodiment:
table 1 registration statement example one
Referring to table 1, each registration statement includes the user's real name, the blockchain account address, and the address of a social platform that is the subject of the posting; the social platform is selected or provided by the user, for example: the block chain system provides a common social platform and displays the common social platform to the user, the user selects the social platform used by the user, and the block chain system generates a registration statement according to the selection result of the user; the number of social platforms is not specifically limited, but is at least one, and since the more social platforms that publish the blockchain account address, the higher the credibility of the blockchain account address, as a preferred example, the number of social platforms associated with the user is not less than 3. The scheme associates the user, the user's blockchain account address and the social platform through the registration statement, and forms an association legend as shown in fig. 2.
S2: correspondingly publishing the registration statement to a social account of the user in a social platform, and generating an address statement after the publication is completed; the address statement comprises a name of the user, a block chain account address and a social account address corresponding to the user in each social platform;
after the registration statement is generated, the registration statement is required to be sent to the social contact account of the user, the user selects the existing social contact account to be associated, the respective registration statement is issued to each associated social contact account, and the address statement is generated after the issuance is finished; for example: if Zhang three (zhangsan) has a blockchain account address of 0x0fdxxxx and it is ready to post content to the social platform with web site link www.xxxxx.com, then the final post content is: zhangsan,0x0fdxxxx, www.xxxxx.com;
after the release is completed, replacing the website of the social platform in the registration statement with the social account website of the user to generate an address statement containing a plurality of social account websites; as a specific example, the address declaration is as follows:
the embodiment does not limit the specific storage mode of the address declaration, for example, the address declaration may be stored and transmitted in a json file or two-dimensional code form, so that the receiver can conveniently verify the address declaration; the address declaration is preferably transmitted in the form of a two-dimensional code in an unsecured network environment; fig. 3 shows address declarations in json format provided in the present embodiment.
S3: the receiver extracts a social account address from the address statement provided by the sender, accesses the social account address, acquires a registration statement issued by the sender in the social account, and verifies the validity of the blockchain account address provided by the sender;
in the block chain transaction process, a sender (such as a transfer receiver) provides an address statement of the sender to a receiver (such as a transfer account), and the receiver analyzes the address statement provided by the sender so as to obtain all social account addresses in the address statement; respectively accessing each social account address, acquiring a registration statement issued by a sender in the social account, and verifying the validity of a block chain account address provided by the sender;
as a preferred example, an API interface which can be called externally is provided in the address declaration, and the receiver accesses the social account address in the address declaration through the API interface to obtain the registration declaration which is published in the social account by the sender.
When the number of social account websites publishing information is more than one, considering that in practical applications, access of some social account websites may be abnormal, this embodiment does not require that all social account websites can be normally accessed, specifically, in addition to the real name of the user, the block chain account address, and the website of the social platform serving as the publishing object given in table 1, a corresponding weight value is configured for each social platform in the registration statement, as shown in table 2:
table 2 registration statement example two
When a receiver accesses each social account address in the address statement, the blockchain system acquires the access result of each social account website and performs weighted average on the access result according to the weight value in the registration statement, and when the acquired weighted average value is higher than a preset value, the blockchain account address provided by the sender is judged to be valid; the specific calculation mode of the weighted average value and the size of the preset value are not particularly limited, and a user can configure the weighted average value according to actual requirements; in a specific example, the weighted average is calculated by:
in the formula (I), the compound is shown in the specification,
represents a weighted average; omegaiRepresenting the access result of the ith social account website, and if the ith social account website is successfully accessed, omega i1 is ═ 1; if the access abnormality occurs to the ith social account website, omegai＝0；xiRepresenting the weight value of the social platform corresponding to the ith social account website; n represents the number of social platforms.
Further, the social network-based block link address authentication method provided by this embodiment further includes a step of adding a social account address for posting a message; specifically, receiving a new social platform provided by a user and generating a corresponding address statement; issuing the address statement to a social account address corresponding to the user in the newly added social platform, and updating the address statement of the user after the issuing is finished;
when a user wants to add a new social account in the later use process, providing a newly added social account address for the blockchain system; the block chain system firstly generates a registration statement according to the newly added social account address, and further needs to set a weight value of the newly added social platform; then, the newly generated registration statement is issued to the newly added social account address; after the release is completed, the corresponding address declaration needs to be updated accordingly.
FIG. 4 is a diagram illustrating address issuance and address revocation according to an embodiment of the present invention; the specific processes of address release and addition are described in detail above; further, the social network-based block link address authentication method provided by this embodiment further includes a step of deleting the social account address of the published message; the embodiment provides two deleting modes, one is automatic deleting; the other is to delete according to the revocation requirement of the user;
when automatically deleting, a corresponding revocation statement needs to be configured for the block chain account address of the user, where the revocation statement includes all or part of revocation conditions corresponding to the social platform, and the revocation conditions may be validity dates and/or specific revocation rules, as shown in table 3:
table 3 revocation declaration example one
After configuration is completed, the revocation declaration of each user is traversed, and when any social platform in the revocation declaration meets the corresponding revocation condition, for example: and when the validity date is reached and/or the revocation rule is satisfied, automatically revoking the registration statement issued in the social account address corresponding to the social platform, updating the existing address statement after the revocation is completed, and deleting the revoked social account address in the address statement to form a new address statement.
When deleting according to the revocation requirement of a user, receiving a revocation message provided by the user, wherein the revocation message comprises a social account address to be revoked; and deleting the registration statement issued in the corresponding social account address according to the revocation message, updating the existing address statement after the revocation is finished, and deleting the social account address after the revocation in the address statement to form a new address statement.
In order to ensure that the revocation message actually comes from the real user corresponding to the blockchain account, it is necessary to verify whether a certain revocation message is real and authorized; in this embodiment, in addition to the real name of the user, the address of the block chain account, the address of the social platform as the publishing object, and the corresponding weight value, which are given in table 2, the registration statement provided in the present solution further includes a verification string, as shown in table 4:
table 4 registration statement example three
The value of the validation string is generated from the published text and generated by the blockchain system according to a certain rule without specific limitation. Multiple social platforms may share a validation string, that is, a validation string may be configured for each blockchain address of a user.
The revocation declaration includes an authentication code in addition to the revocation conditions listed in table 3, as shown in table 5:
table 5 revocation declaration example two
The verification code is generated from a verification string in the registration statement and has a preset mapping relation with the verification code contained in the registration statement; as a specific example, the generation rule of the verification code is as follows: extracting specific 8 bytes (such as MD5 hash of registration statement, and optionally selecting 8 bytes from the obtained 16 bytes) from the verification string of the issued information as a random number seed to generate a public-private key pair (SK, PK); wherein the rule that extracts a particular byte from the validation string, the random number seed, and the generated private key PK are all kept secret. Then, a specific character string (a preselected character string, such as "hello world") is encrypted by using the private key PK, and the binary character string of the encrypted result is encoded (such as converted into characters that can be represented by ASCII code) according to a specific rule to form a verification code, which is marked as "verification code 1".
When a user wants to revoke address information published in a social account, the user must provide a revocation message containing a similar "verification code 2" generated according to the above rule. This "authenticator 2" is required to maintain some preset relationship with authenticator 1 in the revocation statement, in this example, authenticator 1 and authenticator 2 maintain the same public key SK, i.e. both authenticator 1 and authenticator 2 can be verified by public key SK. The system will perform the revocation operation only after the authentication code 2 is successfully verified.
And similarly, after the revocation is finished, updating the existing address statement, and deleting the address of the social account after the revocation in the address statement to form a new address statement.
As a specific example, the revocation information may originate from any social account of the user; the scheme also supports entrusting revocation, when a certain social contact account cannot be normally accessed, a user can send a revocation message to the blockchain system through other social contact accounts and entrust revocation to the registration statement issued in the social contact account which cannot be normally accessed; the specific revocation process is as shown above and is not described in detail.
Example two
The embodiment provides a block chain transaction method based on a social network, fig. 5 is a flow diagram of the block chain transaction method, and referring to fig. 5, firstly, a transfer receiver issues a registration statement generated based on a block chain account address of the transfer receiver to a social account through a block chain system, and sends the address statement generated after the issuance is completed to the transfer receiver; the account transfer receiver extracts a social account address from the address statement provided by the account transfer receiver, accesses the social account address, acquires a registration statement issued in the social account, and verifies the validity of the block chain account address provided by the account transfer receiver; when the verification is passed, the transfer is initiated, so that the transaction safety is improved; the transfer recipient may log into the blockchain system to query the account address for the latest balance.
In the above process, the method for verifying the validity of the block chain account address refers to the description in the first embodiment, and is not described herein again.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A social network-based block link address authentication method is characterized by comprising the following steps:
generating corresponding registration statements for the block chain account address of the user according to at least one social platform related to the user, wherein each registration statement comprises the block chain account address of the user and a website of one social platform as a publishing object;
correspondingly publishing the registration statement to a social account of the user in the social platform, and generating an address statement after the publication is completed; the address statement comprises a block chain account address of the user and corresponding social account addresses of the user in all social platforms;
and the receiver extracts a social account address from the address statement provided by the sender, accesses the social account address, acquires a registration statement issued by the sender in the social account, and verifies the validity of the blockchain account address provided by the sender.
2. A block link address authentication method as claimed in claim 1, wherein an API interface is provided in the address declaration for external calling, and the recipient accesses the social account address in the address declaration through the API interface to obtain the registration declaration issued in the social account by the sender.
3. The method of claim 1, wherein when the number of social platforms associated with the user is more than one, each of the registration statements further includes a weight value of the social platform;
accessing the social account address and obtaining a registration statement issued by the sender in the social account, and verifying the validity of the blockchain account address provided by the sender specifically comprises:
and obtaining the access result of each social account website, carrying out weighted average on the access result according to the weight value, and judging that the block chain account address provided by the sender is valid when the obtained weighted average value is higher than a preset value.
4. The method of claim 3, wherein the obtaining the access result of each social account website and performing a weighted average on the access results specifically comprises:
in the formula (I), the compound is shown in the specification,
represents a weighted average; omegaiRepresenting the access result of the ith social account website, and if the ith social account website is successfully accessed, omegai1 is ═ 1; otherwise, ωi＝0；xiRepresenting the weight value of the social platform corresponding to the ith social account website; n represents the number of social platforms.
5. A method of block chain address authentication as claimed in claim 1 in which the address statements are stored and transmitted in the form of json files or two dimensional codes.
6. The method of block chain address authentication of claim 1, further comprising:
responding to a new request of a user, receiving a new social platform provided by the user and generating a corresponding address statement; and issuing the address statement to a social account address corresponding to the user in the newly added social platform, and updating the address statement of the user after the issuing is finished.
7. The method of block chain address authentication of claim 1, further comprising:
configuring a corresponding revocation statement for a block chain account address of a user, wherein the revocation statement comprises respective revocation conditions corresponding to all or part of social platforms;
and traversing the revocation declaration of each user, and when any social platform in the revocation declarations meets the corresponding revocation condition, automatically deleting the registration declaration issued in the social account address corresponding to the social platform and updating the address declaration of the user.
8. The method of block chain address authentication of claim 7, further comprising:
receiving a revocation message provided by a user, wherein the revocation message comprises a social account address to be revoked;
and deleting the registration statement issued in the social account address according to the revocation message and updating the address statement of the user.
9. The method of block chain address authentication of claim 8, wherein the revocation statement further includes a first verification code; the revocation message provided by the user also includes a second authentication code,
and comparing the first verification code with the second verification code to verify the authenticity of the revocation message, if the first verification code and the second verification code have a preset mapping relation, judging that the revocation message passes the verification, and executing deletion operation based on the revocation message.
10. A blockchain transaction method comprising the blockchain address authentication method of claims 1-9, further comprising: the recipient transfers to the blockchain account address that is verified to be valid.
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