CN110189465B - Random lottery method and equipment by means of block chain - Google Patents
Random lottery method and equipment by means of block chain Download PDFInfo
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- CN110189465B CN110189465B CN201910509043.5A CN201910509043A CN110189465B CN 110189465 B CN110189465 B CN 110189465B CN 201910509043 A CN201910509043 A CN 201910509043A CN 110189465 B CN110189465 B CN 110189465B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C15/00—Generating random numbers; Lottery apparatus
- G07C15/006—Generating random numbers; Lottery apparatus electronically
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
Abstract
The invention discloses a random lottery method and device by block chain, comprising: the lottery drawing equipment initiates a transfer request on the block chain, and the transfer request is used for drawing a lottery; carrying out Hash operation on the transfer request by the lottery equipment to obtain a first Hash value; the lottery drawing equipment obtains the total block output number n of the current round of block output nodes; dividing the first hash value by the total block number n by the lottery equipment to obtain a corresponding first remainder m; the lottery drawing equipment acquires the mth block in the total blocks of the current round, and performs block hash operation on the mth block to obtain a second hash value; after the lottery drawing equipment adds the second hash value with a preset value, performing hash operation on the second hash value added with the preset value to obtain a third hash value; the lottery equipment divides the third hash value by a preset integer to obtain a corresponding second remainder; the second remainder is the number of this lottery. The invention can ensure the randomness, openness, fairness and credibility of the lottery drawing process.
Description
Technical Field
The invention relates to the technical field of combination of block chains and lottery, in particular to a random lottery method and equipment by means of the block chains.
Background
The blockchain is a novel application mode of computer technologies such as distributed data storage, point-to-point transmission, a consensus mechanism and an encryption algorithm. The consensus mechanism is a mathematical algorithm for establishing trust and obtaining rights and interests among different nodes in a blockchain system. The blockchain is the underlying technology of bitcoin, like a database ledger, which records all transaction records. The system is characterized in that a plurality of nodes are arranged at different parts of the world, and each node maintains a set of same databases. The data is maliciously tampered and difficult to tamper, and the data loss is extremely rare, so that a platform which is fair and transparent and solves the trust crisis is realized.
The existing lottery drawing technology is widely applied to commercial activities, such as the lottery drawing of market activities or the lottery drawing in the lottery industry, so as to attract the eyes of consumers or feedback the consumers, and further improve the participation enthusiasm of lottery participants or commercial purchasers. Lottery drawing technology is also applied to internal activities of the company, such as annual meeting of the company or annual meeting establishment of the company, so as to feed back employees, increase the company body feeling of the employees and the like. The existing lottery draw mostly adopts manual or computer lottery draw, the randomness of the manual lottery draw is poor, and the lottery draw process is opaque, so the lottery draw result can be operated by a dark box, and unfairness can exist. Because the lottery algorithm of the computer lottery may be tampered or maliciously attacked by hackers, and the lottery mechanism cannot be transparent, the lottery result of the computer lottery may also have the conditions of unfairness, unfairness and poor randomness.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to solve the technical problems that the randomness of the existing lottery scheme cannot be guaranteed, and the lottery process cannot guarantee the total opaqueness, so that the technical problems of incompleteness and unfairness exist.
To achieve the above object, in a first aspect, the present invention provides a random lottery method by means of a blockchain, comprising the steps of:
the lottery device initiates a transfer request on the blockchain, wherein the transfer request comprises: an initiator address, a receiver address, and a transfer amount; the transfer request is used for drawing a lottery;
carrying out Hash operation on the transfer request by the lottery drawing equipment to obtain a first Hash value;
the lottery drawing equipment obtains the total block output number n of the current round of block output nodes; n is a positive integer;
dividing the first hash value by the total block number n by the lottery equipment to obtain a corresponding first remainder m; m is a positive integer less than n;
the lottery drawing equipment acquires the mth block in the total blocks of the current round, and performs block hash operation on the mth block to obtain a second hash value;
after the lottery drawing equipment adds the second hash value with a preset value, performing hash operation on the second hash value added with the preset value to obtain a third hash value;
the lottery equipment divides the third hash value by a preset integer to obtain a corresponding second remainder; the second remainder is the number of the lottery; the preset integer determines the value change interval of the lottery drawing number.
Optionally, the preset value is any integer between 1 and m.
Specifically, any integer between 1 and m is a random number, so that the preset value is a random number, and the randomness of the lottery process is further guaranteed.
The second hash value is hexadecimal, and the process of adding the preset integer to the second hash value also needs to convert the second hash value and the preset integer into the same system, and then add the same system and perform hash operation to obtain a corresponding third hash value.
Optionally, the first hash value is hexadecimal data; the lottery device divides the first hash value by the total number n of the blocks to obtain a corresponding first remainder m, and the method specifically comprises the following steps:
the lottery drawing equipment converts the first hash value into corresponding decimal data;
and the lottery drawing equipment divides the first Hash value converted into the decimal data by the total block number n to obtain a corresponding first remainder m.
Optionally, the third hash value is hexadecimal data; the lottery device divides the third hash value by a preset integer to obtain a corresponding second remainder, and the method specifically comprises the following steps:
the lottery drawing equipment converts the third hash value into corresponding decimal data;
and the lottery equipment divides the third Hash value converted into the decimal data by a preset integer to obtain a corresponding second remainder.
Optionally, when the preset integer is 10, the lottery drawing number is changed within a range of 0-9; and when the preset integer is 100, the lottery drawing number is changed within the range of 00-99, wherein if the second remainder is less than 10, the ten bits of the second remainder are output after zero padding.
Specifically, the preset integer is the sum of the number of the candidate number segments, so as to ensure that all the candidate lotteries have numbers to be drawn.
The random lottery drawing method can be applied to market activity lottery drawing or company annual meeting lottery drawing, a plurality of first-class prizes, second-class prizes and third-class prizes can be set, and each prize item corresponds to one prize. The drawing is repeated, and the drawing numbers can be divided into one of the prizes according to the sequence of the drawing numbers, for example, first three equal prizes are drawn, then two equal prizes are drawn, and finally one equal prize is drawn. If the numbers drawn later are repeated with the numbers drawn before, drawing is carried out again until different numbers are drawn so as to ensure that all the prizes can be drawn.
Further, if the number of the lottery player is not the 000 number, that is, if the candidate lottery numbers may be changed from S +1 to S + T, the predetermined integer may be set to T, the second remainder may be obtained, and the second remainder may be added to S to obtain the corresponding lottery result.
In a second aspect, the present invention provides a random lottery device by means of a blockchain, comprising:
the lottery drawing initiating unit is used for initiating a transfer request on the block chain, and the transfer request comprises: an initiator address, a receiver address, and a transfer amount; the transfer request is used for drawing a lottery;
the hash operation unit is used for carrying out hash operation on the transfer request to obtain a first hash value;
the block information acquisition unit is used for acquiring the total block output number n of the current round of block output nodes; n is a positive integer;
a remainder determining unit, configured to divide the first hash value by the total number of blocks n to obtain a corresponding first remainder m; m is a positive integer less than n;
the block information acquisition unit is used for acquiring the mth block in the total blocks of the current round;
the hash operation unit is used for carrying out block hash operation on the mth block to obtain a second hash value; adding a preset value to the second hash value, and then performing hash operation on the second hash value added with the preset value to obtain a third hash value;
the lottery number drawing unit is used for dividing the third hash value by a preset integer to obtain a corresponding second remainder; the second remainder is the number of the lottery; the preset integer determines the value change interval of the lottery drawing number.
Optionally, the preset value is any integer between 1 and m.
Optionally, the first hash value is hexadecimal data; the remainder determination unit converts the first hash value into corresponding decimal data; and dividing the first hash value converted into the decimal data by the total block number n to obtain a corresponding first remainder m.
Optionally, the third hash value is hexadecimal data; the lottery drawing number unit converts the third hash value into corresponding decimal data; and dividing the third hash value converted into the decimal data by a preset integer to obtain a corresponding second remainder.
Optionally, when the preset integer is 10, the lottery drawing number is changed within a range of 0-9; and when the preset integer is 100, the lottery drawing number is changed within the range of 00-99, wherein if the second remainder is less than 10, the ten bits of the second remainder are output after zero padding.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
the invention provides a random lottery method and equipment by means of a block chain, which are used for initiating lottery based on block chain transfer service, wherein the lottery process depends on the hash value of block chain data, the hash operation has randomness, and the random number is added on the basis of the combination of the block number in the current round of blocks and the hash value of a block in a random block, so that the randomness of the lottery process is enhanced. And finally, the remainder is calculated by the integral division of the result of the three-time random hash operation to obtain the final lottery, so that the randomness of the lottery process is ensured.
The invention provides a random lottery method and equipment by means of a block chain, which are based on a block chain technology. The number in the block chain can be checked by any user, so that the lottery drawing process can be supervised by the public, the lottery drawing based on the block chain is fair and public, and the actual application requirements can be met.
Drawings
FIG. 1 is a flow chart of a random lottery method by means of a blockchain according to the present invention;
fig. 2 is a diagram of a random lottery device architecture with the help of a blockchain according to 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.
FIG. 1 is a flow chart of a random lottery method by means of a blockchain according to the present invention; as shown in fig. 1, the method comprises the following steps:
s101, the lottery drawing equipment initiates a transfer request on the block chain, wherein the transfer request comprises: an initiator address, a receiver address, and a transfer amount; the transfer request is used for drawing a lottery;
s102, carrying out Hash operation on the transfer request by the lottery drawing equipment to obtain a first Hash value;
s103, the lottery drawing equipment obtains the total block output number n of the current one-round block output nodes; n is a positive integer;
s104, dividing the first hash value by the total block number n by the lottery equipment to obtain a corresponding first remainder m; m is a positive integer less than n;
s105, the lottery drawing equipment acquires the mth block in the total blocks of the current round, and performs block hash operation on the mth block to obtain a second hash value;
s106, after adding a preset value to the second hash value, the lottery drawing equipment performs hash operation on the second hash value added with the preset value to obtain a third hash value;
s107, dividing the third hash value by a preset integer by the lottery equipment to obtain a corresponding second remainder; the second remainder is the number of the lottery; the preset integer determines the value change interval of the lottery drawing number.
Specifically, the block-out process of the block-out node is a process of packaging transactions into blocks. If the total number of the blocks in the current round is n, the total number of the blocks in the current round is n.
In one example, under a common knowledge of the granted grant proof mechanism (DPOS), for example, there are 15 out-block nodes in a current round, each out-block node continues out of 6 blocks, and the total out-block number of each out-block node in each round is 90; each block output corresponds to one block, and each round of block output nodes corresponds to 90 blocks. In the process of each round of block output of the block output node, each block output node is output according to a preset sequence, namely each block is generated according to a preset sequence. In other words, each block is sequential.
Optionally, the preset value is any integer between 1 and m.
Optionally, the first hash value is hexadecimal data; the lottery device divides the first hash value by the total number n of the blocks to obtain a corresponding first remainder m, and the method specifically comprises the following steps:
the lottery drawing equipment converts the first hash value into corresponding decimal data;
and the lottery drawing equipment divides the first Hash value converted into the decimal data by the total block number n to obtain a corresponding first remainder m.
Optionally, the third hash value is hexadecimal data; the lottery device divides the third hash value by a preset integer to obtain a corresponding second remainder, and the method specifically comprises the following steps:
the lottery drawing equipment converts the third hash value into corresponding decimal data;
and the lottery equipment divides the third Hash value converted into the decimal data by a preset integer to obtain a corresponding second remainder.
Optionally, when the preset integer is 10, the lottery drawing number is changed within a range of 0-9; and when the preset integer is 100, the lottery drawing number is changed within the range of 00-99, wherein if the second remainder is less than 10, the ten bits of the second remainder are output after zero padding.
It should be noted that, in the lottery scheme provided by the present invention, the preset integer may be set according to actual needs. Not limited to only 10 or 100. Specifically, the predetermined integer is the sum of the number of the candidate number segments to ensure that numbers can be drawn in all candidate drawings.
In one embodiment: if the lottery drawing method is applied to the market activity lottery drawing, if the candidate lottery drawing persons have 500 numbers, each candidate is allocated with one number, and the allocated numbers can be changed in the number section of 000-499. But the raffle prizes may include: first-class prize 1, second-class prize 5 and third-class prize 20. A total of 26 numbers need to be drawn out of the 500 candidate numbers to complete the drawing campaign. Wherein, first-class prize can obtain refrigerator prize, second-class prize can obtain microwave oven prize, and third-class prize can obtain flower frame prize.
The preset integer can be set to 500, and the extracted numbers will vary in 000-499 according to the random distribution. The lottery drawing is repeated 26 times, and the first 20 numbers in the drawn numbers are equal prizes, the 21 st number to the 25 th number are equal prizes, and the 26 th number is equal prize. Wherein, if the numbers drawn later are repeated with the numbers drawn before, the drawing is repeated until different numbers are drawn, so as to ensure that 26 candidate lottery players can draw a prize.
Further, if the number of the lottery player is not the 000 number, that is, if the candidate lottery numbers may be changed from S +1 to S + T, the predetermined integer may be set to T, the second remainder may be obtained, and the second remainder may be added to S to obtain the corresponding lottery result.
In another embodiment, if the lottery method is applied to a corporate annual meeting lottery, if the candidate staff have 2000 digits, each candidate staff is assigned a number, and the assigned numbers may vary in the 000-1999 number segment. But the raffle prizes may include: first-class prize 10, second-class prize 30 and third-class prize 100. A total of 140 numbers need to be drawn out of 2000 candidate numbers to complete the drawing campaign. If the preset integer is set to 2000, the extracted number will vary in 000-1999 corresponding to the random distribution. The drawing is repeated 140 times, and the first 100 numbers in the drawn numbers are equal prizes, the 101 th number to the 130 th number are equal prizes, and the 131 th number to the 140 th number are equal prizes. If the numbers drawn later are repeated with the numbers drawn before, drawing again until different numbers are drawn, so as to ensure that 140 candidate employees can be drawn for winning.
The first-class prize can reward the latest mobile phone of the company, the second-class prize can reward the small-sized air purifier of the company, and the third-class prize can reward the mobile power supply of the company.
The random lottery method provided by the invention can also be applied to other specific scenes, and the technicians in the field can carry out practical application according to actual needs. The preset integer can be selected by the person skilled in the art according to actual needs to meet the requirements of the corresponding lottery variation range interval. The invention is not limited in any way.
Fig. 2 is a block chain-based random lottery device architecture diagram provided by the present invention, as shown in fig. 2, including the following units:
a lottery initiating unit 201, configured to initiate a transfer request on the blockchain, where the transfer request includes: an initiator address, a receiver address, and a transfer amount; the transfer request is used for drawing a lottery;
a hash operation unit 202, configured to perform a hash operation on the transfer request to obtain a first hash value;
a block information obtaining unit 203, configured to obtain a total block output number n of the current round of block output nodes; n is a positive integer;
a remainder determining unit 204, configured to divide the first hash value by the total number of blocks n to obtain a corresponding first remainder m; m is a positive integer less than n;
a block information obtaining unit 203, configured to obtain an m-th block in the total blocks of the current round;
a hash operation unit 202, configured to perform a block hash operation on the mth block to obtain a second hash value; adding a preset value to the second hash value, and then performing hash operation on the second hash value added with the preset value to obtain a third hash value;
a lottery number unit 205, configured to divide the third hash value by a preset integer to obtain a corresponding second remainder; the second remainder is the number of the lottery; the preset integer determines the value change interval of the lottery drawing number.
Optionally, the preset value is any integer between 1 and m.
Optionally, the first hash value is hexadecimal data; the remainder determination unit 204 converts the first hash value into corresponding decimal data; and dividing the first hash value converted into the decimal data by the total block number n to obtain a corresponding first remainder m.
Optionally, the third hash value is hexadecimal data; the drawing number unit 205 converts the third hash value into corresponding decimal data; and dividing the third hash value converted into the decimal data by a preset integer to obtain a corresponding second remainder.
Optionally, when the preset integer is 10, the lottery drawing number is changed within a range of 0-9; and when the preset integer is 100, the lottery drawing number is changed within the range of 00-99, wherein if the second remainder is less than 10, the ten bits of the second remainder are output after zero padding.
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 (8)
1. A random lottery method by means of a blockchain, characterized by comprising the steps of:
the lottery device initiates a transfer request on the blockchain, wherein the transfer request comprises: an initiator address, a receiver address, and a transfer amount; the transfer request is used for drawing a lottery;
carrying out Hash operation on the transfer request by the lottery drawing equipment to obtain a first Hash value;
the lottery drawing equipment obtains the total block output number n of the current round of block output nodes; n is a positive integer;
dividing the first hash value by the total block number n by the lottery equipment to obtain a corresponding first remainder m; m is a positive integer less than n;
the lottery drawing equipment acquires the mth block in the total blocks of the current round, and performs block hash operation on the mth block to obtain a second hash value;
after the lottery drawing equipment adds the second hash value with a preset value, performing hash operation on the second hash value added with the preset value to obtain a third hash value;
the lottery equipment divides the third hash value by a preset integer to obtain a corresponding second remainder; the second remainder is the number of the lottery; the preset integer determines the value change interval of the lottery drawing number;
the first hash value is hexadecimal data;
the lottery device divides the first hash value by the total number n of the blocks to obtain a corresponding first remainder m, and the method specifically comprises the following steps:
the lottery drawing equipment converts the first hash value into corresponding decimal data;
and the lottery drawing equipment divides the first Hash value converted into the decimal data by the total block number n to obtain a corresponding first remainder m.
2. The random lottery method by means of a blockchain according to claim 1, wherein the preset value is any integer between 1 and m.
3. The random lottery method by means of blockchain according to claim 1, wherein the third hash value is data in hexadecimal;
the lottery device divides the third hash value by a preset integer to obtain a corresponding second remainder, and the method specifically comprises the following steps:
the lottery drawing equipment converts the third hash value into corresponding decimal data;
and the lottery equipment divides the third Hash value converted into the decimal data by a preset integer to obtain a corresponding second remainder.
4. A random lottery method by means of a blockchain according to any one of claims 1 to 3, wherein the lottery number varies in the range of 0 to 9 when the preset integer is 10; and when the preset integer is 100, the lottery drawing number is changed within the range of 00-99, wherein if the second remainder is less than 10, the ten bits of the second remainder are output after zero padding.
5. A random lottery device by means of a blockchain, comprising:
the lottery drawing initiating unit is used for initiating a transfer request on the block chain, and the transfer request comprises: an initiator address, a receiver address, and a transfer amount; the transfer request is used for drawing a lottery;
the hash operation unit is used for carrying out hash operation on the transfer request to obtain a first hash value;
the block information acquisition unit is used for acquiring the total block output number n of the current round of block output nodes; n is a positive integer;
a remainder determining unit, configured to divide the first hash value by the total number of blocks n to obtain a corresponding first remainder m; m is a positive integer less than n;
the block information acquisition unit is used for acquiring the mth block in the total blocks of the current round;
the hash operation unit is used for carrying out block hash operation on the mth block to obtain a second hash value; adding a preset value to the second hash value, and then performing hash operation on the second hash value added with the preset value to obtain a third hash value;
the lottery number drawing unit is used for dividing the third hash value by a preset integer to obtain a corresponding second remainder; the second remainder is the number of the lottery; the preset integer determines the value change interval of the lottery drawing number;
the first hash value is hexadecimal data; the remainder determination unit converts the first hash value into corresponding decimal data; and dividing the first hash value converted into the decimal data by the total block number n to obtain a corresponding first remainder m.
6. The random lottery device by means of block chain according to claim 5, wherein the preset value is any integer between 1 and m.
7. The random lottery device by block chain according to claim 5, wherein the third hash value is data in hexadecimal; the lottery drawing number unit converts the third hash value into corresponding decimal data; and dividing the third hash value converted into the decimal data by a preset integer to obtain a corresponding second remainder.
8. The random lottery device by means of blockchains according to any one of claims 5 to 7, wherein the lottery number varies in the range of 0 to 9 when the preset integer is 10; and when the preset integer is 100, the lottery drawing number is changed within the range of 00-99, wherein if the second remainder is less than 10, the ten bits of the second remainder are output after zero padding.
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| CN110601819B (en) * | 2019-09-26 | 2023-02-14 | 腾讯科技（深圳）有限公司 | Processing method for random number, block chain link point device and storage medium |
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| CN106980488A (en) * | 2017-03-14 | 2017-07-25 | 腾讯科技（深圳）有限公司 | Random digit generation method and device |
| CN107392770A (en) * | 2017-08-09 | 2017-11-24 | 北京云知科技有限公司 | A kind of random-number generating method and system based on block chain |
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| CN109783057A (en) * | 2018-12-03 | 2019-05-21 | 北京建筑大学 | Random digit generation method and device on a kind of block chain |
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