WO2022068644A1 - Target user determination method and apparatus, and device and storage medium - Google Patents

Abstract

Provided are a target user determination method and apparatus, and a device and a storage medium. The method comprises: uploading to a blockchain random numbers corresponding to users waiting to participate, so as to determine lottery numbers; then, on the basis of data stored in the blockchain and a plurality of signature terminals, determining an object to be drawn; and on the basis of the lottery numbers, determining a target user corresponding to the object to be drawn, and sending a notification message to the target user. The security of an object to be drawn is ensured by a blockchain and a plurality of signature terminals, such that no party, such as a lottery organizer, can tamper with the object to be drawn. Therefore, the accuracy of a target user that is subsequently determined on the basis of the object to be drawn is ensured, and the fairness and impartiality of a user drawing process are improved. Furthermore, in the embodiments of the present application, there is no need for real information of users waiting to participate to be known, only random numbers corresponding to the users waiting to participate need to be known, thereby protecting the users' private information and avoiding illegal use of the user's private information.

Description

Target user determination method, device, device and storage medium

This application claims the priority of the Chinese patent application with the application number 2020110635478 and the application name "target user determination method, device, equipment and storage medium" filed with the China Patent Office on September 30, 2020, the entire contents of which are incorporated by reference in this application.

technical field

The present application relates to data processing technology, and in particular, to a target user determination method, apparatus, device and storage medium.

Background technique

With the continuous development of economy and technology, various lottery technologies and applications have widely affected people's life and work, such as lottery to determine winning bidders, lottery to arrange examination seats, lottery to determine license plate qualifications, lottery to allocate affordable housing, etc.

In the related art, the process of lottery is usually as follows: the user obtains the lottery with the real name, and the lottery number is generated by the lottery organizer using a random value algorithm. The user who matches the winning number will be the winning user.

However, the above-mentioned lottery number is generated by the lottery organizer, and its randomness is questionable. It is possible that the lottery organizer tampered with the lottery number. The odds of winning certain draws. Therefore, it is difficult for the existing lottery mechanism to prove itself to be fair and just. In addition, existing users need to participate in the lottery with their real names, and the user's private information may be known to other personnel, which may be illegally used and bring some adverse effects to users.

technical solutions

In order to solve the problems existing in the prior art, the present application provides a target user determination method, apparatus, device and storage medium.

In a first aspect, an embodiment of the present application provides a method for determining a target user, the method comprising:

Obtain a data request, where the data request includes a random number corresponding to the user to be involved;

uploading the random number to the blockchain, where the random number is used to instruct the blockchain to determine the lottery number corresponding to the user to be participated according to the upload sequence of the random number;

Acquire the data to be processed in the blockchain, send the data to be processed to at least one signature terminal, and the data to be processed is used to instruct the at least one signature terminal to sign the data to be processed, and obtain at least one signature terminal. a signature;

An object to be extracted is determined according to the at least one signature, a target user corresponding to the object to be extracted is determined according to the lottery number, and a notification message is sent to the target user.

In a possible implementation manner, the acquiring the data to be processed in the blockchain includes:

Determine the target block according to the preset time and the time identification of each block in the blockchain;

Acquire the data to be processed according to the data stored in the target block.

Among them, the preset time can be set according to the actual situation, and the data to be processed is obtained through the preset time to ensure certain fairness, openness and uncertainty. In addition, the data stored in the blockchain is not easy to be tampered with, which further improves the fairness and openness of subsequent processing results.

In a possible implementation manner, the determining the object to be extracted according to the at least one signature includes:

obtaining a target signature according to the at least one signature;

The object to be extracted is determined according to the target signature.

In a possible implementation manner, the obtaining the target signature according to the at least one signature includes:

Judging whether the signature time of the at least one signature is within a preset time period, wherein the signature time is determined according to the time when the data to be processed is sent to the at least one signature terminal and the time when the at least one signature is obtained ;

If the signature time of the at least one signature is within the preset time period, the target signature is obtained according to the at least one signature.

In a possible implementation manner, the obtaining the target signature according to the at least one signature includes:

According to the moment when the at least one signature is obtained, determine a preset number of signatures with the latest acquisition moment in the at least one signature, wherein the preset number is less than or equal to the number of the at least one signature;

Obtain the target signature according to the preset number of signatures.

In a possible implementation manner, the obtaining the target signature according to the at least one signature includes:

The target signature is obtained by summing or multiplying the at least one signature.

The embodiment of the present application obtains the target signature by summing or multiplying the acquired signatures, thereby enhancing the randomness of the target signature, thereby improving the fairness and impartiality of the subsequent processing result.

In a possible implementation manner, the determining the object to be extracted according to the target signature includes:

The to-be-extracted object is determined according to the target signature and the number of the to-be-participated users.

In a possible implementation manner, the determining the target user corresponding to the object to be extracted according to the lottery number includes:

According to the correspondence between the lottery number and the to-be-participated user, the target user corresponding to the to-be-extracted object is determined.

In a possible implementation manner, the determining the object to be extracted according to the target signature and the number of the users to be participated includes:

Calculate the remainder of the target signature to the number of users to be involved;

According to the remainder, the object to be extracted is determined.

In a possible implementation manner, the blockchain stores the correspondence between the lottery number corresponding to the user to be participated and the hash value of the random number corresponding to the user to be participated.

In this embodiment of the present application, when determining the object to be extracted according to the target signature, the number of users to be involved is also considered, that is, the object to be extracted is determined according to the target signature and the number of users to be involved, so that according to the lottery The corresponding relationship between the number and the above-mentioned users to be involved is determined, and the target users corresponding to the above-mentioned objects to be extracted are determined to ensure that each user extraction will have a user selected, and there will be no invalid extraction process, which is suitable for application. In addition, in the embodiments of the present application, the security of the above-mentioned objects to be extracted is guaranteed by the blockchain and multiple signature terminals, so that any party, such as the lottery organizer, cannot tamper with the to-be-extracted objects, thereby ensuring that subsequent determinations based on the above-mentioned objects to be extracted are guaranteed. The accuracy of the target user improves the fairness and impartiality in the user extraction process. Moreover, the embodiment of the present application does not need to know the real information of the user to be participated, but only needs to know the random number corresponding to the user to be participated, so as to protect the user's privacy information and avoid User privacy information is used illegally.

After the target user corresponding to the object to be extracted is determined according to the lottery number, the method further includes:

obtaining a query request, where the query request carries a random number corresponding to the user to be queried;

Calculate the hash value of the random number corresponding to the user to be queried according to the query request, and determine the hash value of the random number corresponding to the target user according to the corresponding relationship;

Whether the user to be queried is the target user is determined according to the hash value of the random number corresponding to the user to be queried and the hash value of the random number corresponding to the target user.

In the embodiment of the present application, by obtaining a data request, the data request includes a random number corresponding to the user to be participated, so that the random number is uploaded to the blockchain to determine the lottery number corresponding to the user to participate, and obtained from the blockchain Data to be processed, send the data to be processed to at least one signature terminal for signature, obtain at least one signature, and then, according to the at least one signature, determine the object to be extracted, and determine the object corresponding to the object to be extracted according to the above-mentioned lottery number. Target user, send a notification message to the target user. The security of the above-mentioned objects to be extracted is guaranteed by the blockchain and multiple signature terminals, so that any party, such as the lottery organizer, cannot tamper with the to-be-extracted objects, thereby ensuring the accuracy of subsequent target users determined based on the above-mentioned objects to be extracted , improve the fairness and impartiality in the user extraction process, and the embodiment of the present application does not need to know the real information of the users to be involved, but only needs to know the random numbers corresponding to the users to be involved, so as to protect the user's private information and prevent the user's private information from being illegal. use.

In a second aspect, an embodiment of the present application provides an apparatus for determining a target user, the apparatus comprising:

a first obtaining module, obtaining a data request, where the data request includes a random number corresponding to the user to be participated;

The uploading module is used to upload the random number to the blockchain, and the random number is used to instruct the blockchain to determine the lottery number corresponding to the user to be participated according to the upload sequence of the random number;

The second acquiring module is configured to acquire the data to be processed in the blockchain, and send the data to be processed to at least one signature terminal, where the data to be processed is used to instruct the at least one signature terminal to Process the data for signature and obtain at least one signature;

The determining module is configured to determine the object to be extracted according to the at least one signature, determine the target user corresponding to the object to be extracted according to the lottery number, and send a notification message to the target user.

In a possible implementation manner, the second obtaining module is specifically used for:

Determine the target block according to the preset time and the time identification of each block in the blockchain;

Acquire the data to be processed according to the data stored in the target block.

In a possible implementation manner, the determining module is specifically used for:

obtaining a target signature according to the at least one signature;

The object to be extracted is determined according to the target signature.

In a possible implementation manner, the determining module is specifically used for:

Judging whether the signature time of the at least one signature is within a preset time period, wherein the signature time is determined according to the time when the data to be processed is sent to the at least one signature terminal and the time when the at least one signature is obtained ;

If the signature time of the at least one signature is within the preset time period, the target signature is obtained according to the at least one signature.

In a possible implementation manner, the determining module is specifically used for:

According to the moment when the at least one signature is obtained, determine a preset number of signatures with the latest acquisition moment in the at least one signature, wherein the preset number is less than or equal to the number of the at least one signature;

Obtain the target signature according to the preset number of signatures.

In a possible implementation manner, the determining module is specifically used for:

The target signature is obtained by summing or multiplying the at least one signature.

In a possible implementation manner, the determining module is specifically used for:

The to-be-extracted object is determined according to the target signature and the number of the to-be-participated users.

In a possible implementation manner, the determining module is specifically used for:

According to the correspondence between the lottery number and the to-be-participated user, the target user corresponding to the to-be-extracted object is determined.

In a possible implementation manner, the determining module is specifically used for:

Calculate the remainder of the target signature to the number of users to be involved;

According to the remainder, the object to be extracted is determined.

In a possible implementation manner, the blockchain stores the correspondence between the lottery number corresponding to the user to be participated and the hash value of the random number corresponding to the user to be participated.

The above device further includes: a query module, configured to obtain a query request after the determination module determines a target user corresponding to the object to be extracted according to the lottery number, and the query request carries a random number corresponding to the user to be queried ;

Calculate the hash value of the random number corresponding to the user to be queried according to the query request, and determine the hash value of the random number corresponding to the target user according to the corresponding relationship;

Whether the user to be queried is the target user is determined according to the hash value of the random number corresponding to the user to be queried and the hash value of the random number corresponding to the target user.

In a third aspect, an embodiment of the present application provides a device for determining a target user, including:

processor;

memory; and

Computer program;

Wherein the computer program is stored in the memory and configured to be executed by the processor, the computer program comprising instructions for performing the method of the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program causes a server to execute the method described in the first aspect.

The target user determination method, device, device and storage medium provided by the embodiments of the present application, the method obtains a data request, the data request includes a random number corresponding to the user to be involved, thereby uploading the random number to the blockchain to determine The lottery number corresponding to the user to be participated, and obtain the data to be processed from the blockchain, send the data to be processed to at least one signature terminal for signature, obtain at least one signature, and then, according to the at least one signature, determine the object to be extracted , and according to the lottery number, determine the target user corresponding to the object to be extracted, and send a notification message to the target user. The security of the above-mentioned objects to be extracted is guaranteed by the blockchain and multiple signature terminals, so that any party, such as the lottery organizer, cannot tamper with the to-be-extracted objects, thereby ensuring the accuracy of subsequent target users determined based on the above-mentioned objects to be extracted , improve the fairness and impartiality in the user extraction process, and the embodiment of the present application does not need to know the real information of the users to be involved, but only needs to know the random numbers corresponding to the users to be involved, so as to protect the user's private information and prevent the user's private information from being illegal. use.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic diagram of the architecture of a target user determination system provided by an embodiment of the present application;

2 is a schematic flowchart of a method for determining a target user according to an embodiment of the present application;

3 is a schematic diagram of another target user determination system architecture provided by an embodiment of the present application;

4 is a schematic flowchart of another target user determination method provided by an embodiment of the present application;

5 is a schematic structural diagram of an apparatus for determining a target user according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of another apparatus for determining a target user provided by an embodiment of the present application;

7A is a possible basic hardware architecture diagram of a target user determination device provided by an embodiment of the present application;

FIG. 7B is another possible basic hardware architecture diagram of the target user determination device provided by the embodiment of the present application.

Embodiments of the present invention

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

Various existing lottery technologies and applications have widely affected people's life and work, such as lottery to determine winning bidders, lottery to arrange exam seats, lottery to determine license plate qualifications, and lottery to allocate affordable housing, etc. In the related art, the process of lottery is usually as follows: the user obtains the lottery with the real name, and the lottery number is generated by the lottery organizer using a random value algorithm. The user who matches the winning number will be the winning user.

However, the above-mentioned lottery number is generated by the lottery organizer, and its randomness is questionable. It is possible that the lottery organizer tampered with the lottery number. The odds of winning certain draws. Exemplarily, taking the lottery to determine the winning unit as an example, the lottery organizer knows the lottery numbers of each unit participating in the bidding. If for some reason, the chance of winning the lottery of unit A is to be increased, the lottery lottery The lottery organizer can conduct a lottery on the lottery numbers of each unit. Adjustment, for example, changing the lottery numbers of multiple units in the above-mentioned units to the lottery of unit A, thereby increasing the chance of winning the lottery of unit A. Therefore, it is difficult for the existing lottery mechanism to prove itself to be fair and just. In addition, existing users need to participate in the lottery with their real names, and the user's private information may be known to other personnel, which may be illegally used and bring some adverse effects to users. Exemplarily, in the process of determining the winning unit through the lottery, unit A participates in the bidding with its real name. For example, unit A provides some relatively confidential information of the company to participate in the bidding, which may lead to the disclosure of the above-mentioned information of unit A. Or, taking the lottery arrangement for exam seats as an example, Candidate A participates in the lottery with his real name. For example, Candidate A provides his real name, student number, or even ID number, etc., which may lead to the disclosure of the above information of Candidate A.

Therefore, the embodiment of the present application proposes a method for determining a target user, which uploads the random number corresponding to the user to be participated to the blockchain to determine the lottery number, so as to determine the to-be-extracted based on the data stored in the blockchain and multiple signature terminals. object, and based on the lottery number, determine the target user corresponding to the object to be extracted, and send a notification message to the target user. Among them, the security of the object to be extracted is guaranteed by the blockchain and multiple signature terminals, so that any party, such as the lottery organizer, cannot tamper with the object to be extracted, thereby ensuring the accuracy of the subsequent target user determined based on the object to be extracted. , improve the fairness and impartiality in the user extraction process, and the embodiment of the present application does not need to know the real information of the users to be involved, but only needs to know the random numbers corresponding to the users to be involved, so as to protect the user's private information and prevent the user's private information from being illegal. use.

Optionally, FIG. 1 is a schematic diagram of an architecture of a target user determination system provided by an embodiment of the present application. In Figure 1, the winning unit is determined by lottery as an example. The above architecture includes a processing device 11 and at least one signature terminal. Here, the at least one signature terminal includes the first signature terminal 121 , the second signature terminal 122 and the third signature terminal 123 as an example. The processing device 11 can be understood as the server of the lottery organizer, and executes the whole lottery process.

It can be understood that the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the target user determination architecture. In some other feasible embodiments of the present application, the above architecture may include more or less components than shown in the figure, or combine some components, or separate some components, or arrange different components, depending on the actual application. The scene is determined, and there is no restriction here. The components shown in Figure 1 may be implemented in hardware, software, or a combination of software and hardware.

In the specific implementation process, the processing device 11 first obtains a data request, which includes a random number corresponding to the user to be participated, and then uploads the random number to the blockchain to determine the lottery number corresponding to the user to participate, and then retrieves the random number from the blockchain. The data to be processed is obtained from the above, and the data to be processed is sent to the above at least one signature terminal. Wherein, in order to improve the randomness of the above-mentioned lottery to determine the winning unit, the above-mentioned data to be processed can be any data that needs to be processed, for example, the above-mentioned data to be processed is data related to each of the above-mentioned winning units, or is irrelevant to each of the above-mentioned winning units The data.

The processing device 11 sends the above-mentioned data to be processed to the above-mentioned at least one signature terminal, that is, the above-mentioned first signature terminal 121 , the second signature terminal 122 and the third signature terminal 123 . The first signature terminal 121, the second signature terminal 122 and the third signature terminal 123 respectively sign the above data to be processed. Exemplarily, taking the data to be processed as m as an example, the first signature terminal 121, the second signature terminal 122 and the third signature terminal 123 can respectively generate private keys sk1, sk2 and sk3 locally, and then use the generated private keys. Sign the above data to be processed as m, that is, calculate s1=sign(sk1, m), s2=sign(sk2, m) and s3=sign(sk3, m). Among them, the signature algorithm sign can be determined according to the actual situation, for example, RSA, ECDSA signature algorithm or national secret signature algorithm is used. The processing device 11 obtains the signatures of the above-mentioned first signature terminal 121, the second signature terminal 122 and the third signature terminal 123 on the above-mentioned data to be processed, thereby, according to these signatures, determine the object to be extracted, and according to the above-mentioned lottery number, determine the same as the above-mentioned. The target user corresponding to the object to be extracted sends a notification message to the target user. Here, the security of the above-mentioned objects to be extracted is guaranteed by the blockchain and multiple signature terminals, so that any party, such as the lottery organizer, cannot tamper with the objects to be extracted, thereby ensuring that the target users determined based on the above-mentioned objects to be extracted, such as winning the bid The accuracy of the unit is improved, and the fairness and impartiality in the user extraction process are improved. Moreover, the embodiment of the present application does not need to know the real information of the users to participate, but only needs to know the random numbers corresponding to the users to participate, so as to protect user privacy information and avoid users Private information is used illegally.

In addition, the system architecture and business scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. With the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The technical solutions of the present application are described below by taking several embodiments as examples, and the same or similar concepts or processes may not be repeated in some embodiments.

2 is a schematic flowchart of a method for determining a target user provided by an embodiment of the present application. An embodiment of the present application provides a method for determining a target user. The method can be applied to the process of determining the target user, and the method can be executed by any The target user determines the method of the apparatus to execute, and the apparatus may be implemented by software and/or hardware. As shown in FIG. 2, on the basis of the system architecture shown in FIG. 1, the target user determination method provided by the embodiment of the present application includes the following steps:

S201: Obtain a data request, where the data request includes a random number corresponding to the user to be participated.

Here, it is taken as an example that the execution subject is the processing device 11 in FIG. 1 . The to-be-participated user sends a data request to the processing device 11 , for example, the to-be-participated user sends a random number r to the processing device 11 . The above random number r may be a pseudo-random number locally generated by each user to be involved, and is generated by the user independently. The pseudo-random number may be a sequence of random numbers uniformly distributed in [0,1]. Exemplarily, as shown in FIG. 3 , in FIG. 3 , the above-mentioned users to participate include user 1, user 2, user 3, user 4 and user 5 as an example, the above-mentioned at least one signature terminal 12 includes the first signature terminal 121, The second signature terminal 122 and the third signature terminal 123 are taken as an example.

S202: Upload the random number to the blockchain, where the random number is used to instruct the blockchain to determine the lottery number corresponding to the user to be participated according to the upload sequence of the random number.

In the embodiment of the present application, after receiving the random numbers corresponding to the above-mentioned users to be participated, the blockchain can generate a lottery number for each of the users to be participated according to the chaining sequence, for example, there are the above-mentioned five users to be participated, User 1 is the first on the chain, and the above blockchain generates a lottery number for the user, such as 0. User 2 is the second on the chain, the above blockchain will generate a lottery number for the user, such as 1. If subsequent users 3, 4 and 5 are listed in sequence, the above blockchain will generate a lottery number for these users in sequence, such as 2, 3 and 4.

In addition, the above-mentioned blockchain may store the correspondence between the lottery numbers of the users to be participated and the users to be participated, for example, store the correspondence between the lottery number 0 of the user 1 and the user 1.

After the processing device 11 uploads the random number to the blockchain, the blockchain can also store the hash value of the random number. Exemplarily, each to-be-participated user generates a random number r, calculates its hash value, for example, uses the one-way hash algorithm SHA3 to generate the hash value SHA3(r), and uploads it to the above-mentioned blockchain.

The above-mentioned blockchain can store the corresponding relationship between the lottery number of the user to be participated and the hash value of the user to be participated. For example, the random number corresponding to user 1 is r1, and the hash value of the random number is SHA3(r1). The above blockchain stores the correspondence between user 1's lottery number 0 and user 1's hash value SHA3(r1).

Here, the embodiment of the present application does not need to know the real information of the user to be participated, but only needs to know the random number corresponding to the user to be participated, so as to protect the user's private information and prevent the user's private information from being illegally used.

S203: Acquire the data to be processed in the blockchain, and send the data to be processed to at least one signature terminal, where the data to be processed is used to instruct the at least one signature terminal to sign the data to be processed to obtain at least one signature.

Wherein, in order to improve the randomness of the target user determination in the embodiment of the present application, the above-mentioned data to be processed may be any data that needs to be processed, for example, the above-mentioned data to be processed is data related to the above-mentioned users to be participated, or, the above-mentioned data to be participated User irrelevant data.

Exemplarily, the above-mentioned acquisition of the data to be processed from the blockchain may include: the processing device 11 determines a target block according to a preset time and the time identifier of each block in the above-mentioned blockchain, and thus, according to the target block to obtain the data to be processed above.

Here, the above preset time can be set according to the actual situation, for example, time t. The above-mentioned blockchain divides the generated data into block records according to a certain time interval, and each block can be set with a corresponding time mark according to the time of generation. The processing device 11 determines the target block according to a preset time, such as time t, and the time flags set by each of the above blocks. In this way, the processing device 11 can obtain the data stored in the above-mentioned target block as the above-mentioned data to be processed, so as to ensure certain fairness, openness and uncertainty. In addition, the data stored in the blockchain is not easy to be tampered with, which further improves the fairness and openness of subsequent processing results.

The number of the above-mentioned at least one signature terminal may be determined according to the actual situation. For example, in FIG. 1 , there are three signature terminals, a first signature terminal 121 , a second signature terminal 122 and a third signature terminal 123 .

After obtaining the data to be processed from the blockchain, the processing device 11 sends the data to be processed to the at least one signature terminal. The at least one signature terminal signs the data to be processed. Exemplarily, taking the above three signature terminals as an example, the first signature terminal 121, the second signature terminal 122 and the third signature terminal 123 respectively sign the above data to be processed. For example, the above-mentioned data to be processed is m, the first signature terminal 121, the second signature terminal 122 and the third signature terminal 123 respectively generate private keys sk1, sk2 and sk3 locally, and then use the generated private key to the above-mentioned data to be processed as m To sign, that is to calculate s1=sign(sk1, m), s2=sign(sk2, m) and s3=sign(sk3, m). Among them, the signature algorithm sign may use RSA, ECDSA signature algorithm, or national secret signature algorithm.

S204: Determine the object to be extracted according to the at least one signature, determine a target user corresponding to the object to be extracted according to the lottery number, and send a notification message to the target user.

Exemplarily, the above-mentioned processing device 11 obtains the above-mentioned at least one signature from the above-mentioned at least one signature terminal, obtains a target signature according to the above-mentioned at least one signature, and determines the above-mentioned object to be extracted according to the target signature.

Wherein, the above-mentioned processing device 11 may perform processing such as a statistical merging algorithm such as summation or multiplication on the above-mentioned at least one signature to obtain the target signature.

Here, the embodiment of the present application obtains the target signature by summing or multiplying the acquired signatures, thereby enhancing the randomness of the target signature, thereby improving the fairness and impartiality of the subsequent processing result.

In addition, in order to avoid that during the user extraction process, the processing device 11 performs the above-mentioned user extraction process for many times, thereby causing unfairness and injustice in the result of subsequent determination. Multiple results, selecting a certain result from the multiple results as the final result, that is, tampering with the result. In this embodiment of the present application, a preset time period is set as the signature window, for example, T time length is set as the signature window period. The processing device 11 judges whether the signature time of the at least one signature is within the preset time period, that is, whether it is within the T time length, wherein the signature time is based on the time at which the data to be processed is sent to the at least one signature terminal. and the moment of obtaining the above at least one signature is determined. For example, the above-mentioned signature time is equal to the subtraction result of the above-mentioned time when the above-mentioned at least one signature is obtained and the above-mentioned time when the above-mentioned data to be processed is sent to the at least one signature terminal. If the signature time of the aforementioned at least one signature is within the aforementioned preset time period, that is, within the aforementioned T time length, the processing device 11 obtains the aforementioned target signature according to the aforementioned at least one signature; otherwise, the processing device 11 may stop the operation and proceed to Relevant prompts are provided so that relevant personnel can deal with them in a timely manner.

In this embodiment of the present application, in order to further improve the randomness of the obtained target signature, a signature threshold may also be set, for example, the number of signatures obtained at the latest time may be set. When obtaining the target signature according to the at least one signature, the processing device 11 may, according to the moment at which the at least one signature is obtained, determine a preset number of signatures with the latest acquisition time among the at least one signature, wherein the preset number is less than or Equal to the number of at least one signature above. Therefore, the processing device 11 obtains the above-mentioned target signature according to the above-mentioned preset number of signatures. Exemplarily, the above-mentioned first signature terminal 121, the second signature terminal 122 and the third signature terminal 123 are used to respectively sign the above-mentioned data m to be processed, that is, calculate s1=sign(sk1, m), s2=sign(sk2, m) and s3=sign(sk3, m) For example, the processing device 11 determines the two signatures with the latest acquisition time among the above three signatures according to the time of acquiring the above three signatures. The above-mentioned signatures s2 and s3 are obtained to obtain the above-mentioned target signature.

The above-mentioned processing device 11 may perform summation or accumulation of the above-mentioned preset number of signatures, for example, sum or accumulation of the above-mentioned signatures s2 and s3, etc., to obtain the target signature.

Here, the security of the above-mentioned target signature in the embodiment of the present application is guaranteed by multiple signature terminals, blockchain, time window mechanism and signature threshold. Each signing terminal generates an independent private key, so the signature value generated by each signing terminal will be different. By signing the data on the target block determined at time t of the blockchain, the signing terminal cannot calculate the signature in advance, and it is difficult to predict. Finally, through the time window mechanism and the signature threshold, it is impossible to predict in advance which signature values provided by which several signature terminals will constitute the final target signature. Therefore, no single party can know the above target signature in advance to ensure the fairness of subsequent processing.

In the embodiment of the present application, the blockchain stores the correspondence between the lottery number corresponding to the user to be participated and the hash value of the random number corresponding to the user to be participated. After determining the target user corresponding to the object to be extracted, the processing device 11 may also obtain a query request, where the query request carries a random number corresponding to the user to be queried. Therefore, the processing device 11 can calculate the hash value of the random number corresponding to the user to be queried according to the above query request, and determine the hash value of the random number corresponding to the target user according to the above corresponding relationship, and further, according to the above to be queried The hash value of the random number corresponding to the user and the hash value of the random number corresponding to the target user determine whether the user to be queried is the target user.

Here, the processing device 11 provides a query function after determining the target user. The user determines whether he is selected by querying the target user. For example, the user inputs its random number r, and the processing device 11 calculates the hash value of the random number, for example, using SHA3 hash to calculate SHA3(r), and then compares and confirms with the hash value of the random number corresponding to the above target user, If it is, the user is the target user, otherwise it is not.

In the embodiment of the present application, by obtaining a data request, the data request includes a random number corresponding to the user to be participated, so that the random number is uploaded to the blockchain to determine the lottery number corresponding to the user to participate, and obtained from the blockchain Data to be processed, send the data to be processed to at least one signature terminal for signature, obtain at least one signature, and then, according to the at least one signature, determine the object to be extracted, and determine the object corresponding to the object to be extracted according to the above-mentioned lottery number. Target user, send a notification message to the target user. The security of the above-mentioned objects to be extracted is guaranteed by the blockchain and multiple signature terminals, so that any party, such as the lottery organizer, cannot tamper with the to-be-extracted objects, thereby ensuring the accuracy of subsequent target users determined based on the above-mentioned objects to be extracted , improve the fairness and impartiality in the user extraction process, and the embodiment of the present application does not need to know the real information of the users to be participated, but only needs to know the random numbers corresponding to the users to participate, so as to protect the user's private information and avoid the illegal user's private information. use.

In addition, in this embodiment of the present application, when determining the object to be extracted according to the target signature, the number of users to be involved is also considered, that is, the object to be extracted is determined according to the target signature and the number of users to be involved, so that, According to the correspondence between the lottery numbers and the users to be participated, the target users corresponding to the objects to be extracted are determined. FIG. 4 is a schematic flowchart of another target user determination method proposed by an embodiment of the present application. As shown in Figure 4, the method includes:

S401: Obtain a data request, where the data request includes a random number corresponding to the user to be participated.

S402: Upload the random number to the blockchain, where the random number is used to instruct the blockchain to determine the lottery number corresponding to the user to be participated according to the upload sequence of the random number.

S403: Acquire the data to be processed in the blockchain, and send the data to be processed to at least one signature terminal, where the data to be processed is used to instruct the at least one signature terminal to sign the data to be processed to obtain at least one signature.

Wherein, steps S401-S403 are implemented in the same manner as the above-mentioned steps S201-S203, and are not repeated here.

S404: Obtain a target signature according to the at least one signature, and calculate the remainder of the target signature to the number of users to be participating.

Illustratively, take the execution subject as the above-mentioned processing device 11 as an example. For example, the above-mentioned number of users to participate is N, and the above-mentioned target signature is S. The processing means 11 calculates the remainder of S to N. Take the above five to-be-participated users: User 1, User 2, User 3, User 4, and User 5 as examples. The processing device 11 calculates the remainder of S to N, and the remainder can be any one of 0, 1, 2, 3 and 4.

S405: Determine the extraction object according to the remainder.

Here, the processing device 11 may use the above-mentioned remainder as the above-mentioned extraction object.

S406: Determine a target user corresponding to the object to be extracted according to the correspondence between the lottery number and the user to be participated, and send a notification message to the target user.

Exemplarily, as mentioned above, after receiving the random numbers of the above-mentioned users to be participating, the above-mentioned blockchain can generate a lottery number for each to-be-participated user according to the chaining sequence, for example, user 1 is the first to be on the chain, Then the above blockchain generates a lottery number, such as 0, for the user. User 2 is the second on the chain, the above blockchain will generate a lottery number for the user, such as 1. If subsequent users 3, 4 and 5 are listed in sequence, the above blockchain will generate a lottery number for these users in sequence, such as 2, 3 and 4. The above-mentioned blockchain can store the correspondence between the lottery numbers of the users to be participated and the users to be participated, for example, store the correspondence between the lottery number 0 of the user 1 and the user 1.

The processing device 11 extracts objects based on the above. For example, 0, 1, 2, 3, and 4, as well as the correspondence between the lottery numbers and the users to be participated, wherein the labels of the users to be participated are as above, and can be the above 0, 1, 2, 3, and 4. The target user corresponding to the object to be extracted above sends a notification message to the target user.

In this embodiment of the present application, when determining the object to be extracted according to the target signature, the number of users to be involved is also considered, that is, the object to be extracted is determined according to the target signature and the number of users to be involved, so that according to the lottery The corresponding relationship between the number and the above-mentioned users to be involved is determined, and the target users corresponding to the above-mentioned objects to be extracted are determined to ensure that each user extraction will have a user selected, and there will be no invalid extraction process, which is suitable for application. In addition, in the embodiments of the present application, the security of the above-mentioned objects to be extracted is guaranteed by the blockchain and multiple signature terminals, so that any party, such as the lottery organizer, cannot tamper with the to-be-extracted objects, thereby ensuring that subsequent determinations based on the above-mentioned objects to be extracted are guaranteed. The accuracy of the target user improves the fairness and impartiality in the user extraction process. Moreover, the embodiment of the present application does not need to know the real information of the user to be participated, but only needs to know the random number corresponding to the user to be participated, so as to protect the user's privacy information and avoid User privacy information is used illegally.

Corresponding to the method for determining a target user in the above embodiment, FIG. 5 is a schematic structural diagram of an apparatus for determining a target user provided by an embodiment of the present application. For the convenience of description, only the parts related to the embodiments of the present application are shown. 5 is a schematic structural diagram of an apparatus for determining a target user according to an embodiment of the present application. The apparatus for determining a target user 50 includes: a first acquiring module 501 , an uploading module 502 , a second acquiring module 503 and a determining module 504 . The device for determining the target user here may be the above-mentioned processing device itself, or a chip or an integrated circuit that implements the functions of the processing device. It should be noted here that the division of the first acquisition module, the upload module, the second acquisition module and the determination module is only a division of logical functions, and the two may be physically integrated or independent.

The first obtaining module 501 obtains a data request, where the data request includes a random number corresponding to the user to be participated.

The uploading module 502 is configured to upload the random number to the blockchain, where the random number is used to instruct the blockchain to determine the lottery number corresponding to the user to be participated according to the upload sequence of the random number.

The second obtaining module 503 is configured to obtain the data to be processed in the blockchain, send the data to be processed to at least one signature terminal, and the data to be processed is used to instruct the at least one signature terminal to The data to be processed is signed, and at least one signature is obtained.

The determining module 504 is configured to determine the object to be extracted according to the at least one signature, determine the target user corresponding to the object to be extracted according to the lottery number, and send a notification message to the target user.

The apparatuses provided in the embodiments of the present application can be used to implement the technical solutions of the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, and details are not described herein again in the embodiments of the present application.

FIG. 6 is a schematic structural diagram of another apparatus for determining a target user provided by an embodiment of the present application on the basis of the embodiment in FIG. 5 . The above-mentioned target user determination apparatus 50 further includes: a query module 505 .

In a possible implementation manner, the second obtaining module 503 is specifically configured to:

Determine the target block according to the preset time and the time identification of each block in the blockchain;

Acquire the data to be processed according to the data stored in the target block.

In a possible implementation manner, the determining module 504 is specifically configured to:

obtaining a target signature according to the at least one signature;

The object to be extracted is determined according to the target signature.

In a possible implementation manner, the determining module 504 is specifically configured to:

Judging whether the signature time of the at least one signature is within a preset time period, wherein the signature time is determined according to the time when the data to be processed is sent to the at least one signature terminal and the time when the at least one signature is obtained ;

If the signature time of the at least one signature is within the preset time period, the target signature is obtained according to the at least one signature.

In a possible implementation manner, the determining module 504 is specifically configured to:

According to the moment when the at least one signature is obtained, determine a preset number of signatures with the latest acquisition moment in the at least one signature, wherein the preset number is less than or equal to the number of the at least one signature;

Obtain the target signature according to the preset number of signatures.

In a possible implementation manner, the determining module 504 is specifically configured to:

The target signature is obtained by summing or multiplying the at least one signature.

In a possible implementation manner, the determining module 504 is specifically configured to:

The to-be-extracted object is determined according to the target signature and the number of the to-be-participated users.

In a possible implementation manner, the determining module 504 is specifically configured to:

According to the correspondence between the lottery number and the to-be-participated user, the target user corresponding to the to-be-extracted object is determined.

In a possible implementation manner, the determining module 504 is specifically configured to:

Calculate the remainder of the target signature to the number of users to be involved;

According to the remainder, the object to be extracted is determined.

In a possible implementation manner, the blockchain stores the correspondence between the lottery number corresponding to the user to be participated and the hash value of the random number corresponding to the user to be participated.

The query module 505 is configured to obtain a query request after the determination module determines the target user corresponding to the object to be extracted according to the lottery number, and the query request carries a random number corresponding to the user to be queried;

Calculate the hash value of the random number corresponding to the user to be queried according to the query request, and determine the hash value of the random number corresponding to the target user according to the corresponding relationship;

Whether the user to be queried is the target user is determined according to the hash value of the random number corresponding to the user to be queried and the hash value of the random number corresponding to the target user.

The apparatuses provided in the embodiments of the present application can be used to implement the technical solutions of the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, and details are not described herein again in the embodiments of the present application.

Optionally, FIGS. 7A and 7B respectively schematically provide a possible basic hardware architecture of the target user determination device described in this application.

Referring to FIGS. 7A and 7B , the target user determination device includes at least one processor 701 and a communication interface 703 . Further optionally, a memory 702 and a bus 704 may also be included.

Wherein, in the target user determination device, the number of processors 701 may be one or more, and FIGS. 7A and 7B only illustrate one of the processors 701 . Optionally, the processor 701 may be a central processing unit (Central Processing Unit (CPU), Graphics Processing Unit (GPU), or Digital Signal Process (DSP). If the target user determines that the device has multiple processors 701, the types of the multiple processors 701 may be different, or may be the same. Optionally, the multiple processors 701 of the target user determination device may also be integrated into a multi-core processor.

The memory 702 stores computer instructions and data; the memory 702 can store computer instructions and data required to implement the above target user determination method provided by the present application, for example, the memory 702 stores instructions for implementing the steps of the above target user determination method. The memory 702 may be any one or any combination of the following storage media: non-volatile memory (eg, read only memory (ROM), solid state drive (SSD), hard disk (HDD), optical disk), volatile memory.

Communication interface 703 may provide information input/output for the at least one processor. It may also include any one or any combination of the following devices: a network interface (such as an Ethernet interface), a wireless network card, and other devices with network access functions.

Optionally, the communication interface 703 may also be used for data communication between the target user determination device and other computing devices or terminals.

Further optionally, the bus 704 is represented by a thick line in FIGS. 7A and 7B. A bus 704 may connect the processor 701 with the memory 702 and the communication interface 703 . In this way, through the bus 704, the processor 701 can access the memory 702, and can also use the communication interface 703 to perform data interaction with other computing devices or terminals.

In this application, the target user determination device executes the computer instructions in the memory 702, so that the target user determination device implements the above target user determination method provided in this application, or the target user determination device deploys the above target user determination device.

From the perspective of logical function division, exemplarily, as shown in FIG. 7A , the memory 702 may include a first obtaining module 501 , an uploading module 502 , a second obtaining module 503 , and a determining module 504 . The inclusion here only involves that the functions of the first obtaining module, the uploading module, the second obtaining module and the determining module can be implemented respectively when the instructions stored in the memory are executed, and are not limited to physical structures.

Exemplarily, as shown in FIG. 7B , the memory 702 may further include a query module 505 . The inclusion here only involves that the functions of the first obtaining module, the uploading module, the second obtaining module, the determining module and the querying module can be implemented respectively when the instructions stored in the memory are executed, and are not limited to physical structures.

In addition, the above-mentioned target user determination device can be implemented as a hardware module, or as a circuit unit, in addition to being implemented by software as in the above-mentioned FIG. 7A and FIG. 7B .

The present application provides a computer-readable storage medium, and the computer program product includes computer instructions, and the computer instructions instruct a computing device to execute the above target user determination method provided by the present application.

The present application provides a chip comprising at least one processor and a communication interface, wherein the communication interface provides information input and/or output for the at least one processor. Further, the chip may also include at least one memory for storing computer instructions. The at least one processor is configured to invoke and execute the computer instructions to execute the above target user determination method provided by the present application.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

Claims (10)

1. A method for determining target users, comprising:

   Obtain a data request, where the data request includes a random number corresponding to the user to be involved;

   uploading the random number to the blockchain, where the random number is used to instruct the blockchain to determine the lottery number corresponding to the user to be participated according to the upload sequence of the random number;

   Acquire the data to be processed in the blockchain, send the data to be processed to at least one signature terminal, and the data to be processed is used to instruct the at least one signature terminal to sign the data to be processed, and obtain at least one signature terminal. a signature;

   An object to be extracted is determined according to the at least one signature, a target user corresponding to the object to be extracted is determined according to the lottery number, and a notification message is sent to the target user.
2. The method according to claim 1, wherein the acquiring the data to be processed in the blockchain comprises:

   Determine the target block according to the preset time and the time identification of each block in the blockchain;

   Acquire the data to be processed according to the data stored in the target block.
3. The method according to claim 1 or 2, wherein the determining the object to be extracted according to the at least one signature comprises:

   obtaining a target signature according to the at least one signature;

   The object to be extracted is determined according to the target signature.
4. The method according to claim 3, wherein the obtaining the target signature according to the at least one signature comprises:

   Judging whether the signature time of the at least one signature is within a preset time period, wherein the signature time is determined according to the time when the data to be processed is sent to the at least one signature terminal and the time when the at least one signature is obtained ;

   If the signature time of the at least one signature is within the preset time period, the target signature is obtained according to the at least one signature.
5. The method according to claim 3, wherein the obtaining the target signature according to the at least one signature comprises:

   According to the moment when the at least one signature is obtained, determine a preset number of signatures with the latest acquisition moment in the at least one signature, wherein the preset number is less than or equal to the number of the at least one signature;

   Obtain the target signature according to the preset number of signatures.
6. The method according to claim 3, wherein the obtaining the target signature according to the at least one signature comprises:

   The target signature is obtained by summing or multiplying the at least one signature.
7. The method according to any one of claims 3 to 6, wherein the determining the object to be extracted according to the target signature comprises:

   The to-be-extracted object is determined according to the target signature and the number of the to-be-participated users.
8. The method according to claim 7, wherein determining the target user corresponding to the object to be extracted according to the lottery number comprises:

   According to the correspondence between the lottery number and the to-be-participated user, the target user corresponding to the to-be-extracted object is determined.
9. The method according to claim 7 or 8, wherein the determining the object to be extracted according to the target signature and the number of the users to be participated includes:

   Calculate the remainder of the target signature to the number of users to be involved;

   According to the remainder, the object to be extracted is determined.
10. The method according to any one of claims 1 to 9, wherein the blockchain stores the correspondence between the lottery number corresponding to the user to be participated and the hash value of the random number corresponding to the user to participate relation;

    After the target user corresponding to the object to be extracted is determined according to the lottery number, the method further includes:

    obtaining a query request, where the query request carries a random number corresponding to the user to be queried;

    Calculate the hash value of the random number corresponding to the user to be queried according to the query request, and determine the hash value of the random number corresponding to the target user according to the corresponding relationship;

    Whether the user to be queried is the target user is determined according to the hash value of the random number corresponding to the user to be queried and the hash value of the random number corresponding to the target user.