CN110223438B - Lottery random number issuing method and device applying block chain - Google Patents
Lottery random number issuing method and device applying block chain Download PDFInfo
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- CN110223438B CN110223438B CN201910509124.5A CN201910509124A CN110223438B CN 110223438 B CN110223438 B CN 110223438B CN 201910509124 A CN201910509124 A CN 201910509124A CN 110223438 B CN110223438 B CN 110223438B
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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
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Abstract
The invention discloses a lottery random number-giving method and equipment applying a block chain, comprising the following steps: the lottery client 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 as a lottery number; the lottery client performs Hash operation on the transfer request to obtain a first Hash value and obtain the total block output number n of the current round of block output nodes; the lottery client divides the first hash value by the total block number n to obtain a corresponding first remainder m, obtains the mth block in the total blocks in the current round, and performs block hash operation on the mth block to obtain a second hash value; the lottery client divides the second 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 numerical value change interval of the lottery number. The invention ensures the randomness, the openness, the credibility and the verifiability of the lottery number issuing process.
Description
Technical Field
The invention relates to the technical field of combination of a block chain and lottery ticket number issuing, in particular to a lottery ticket random number issuing method and equipment applying the block chain.
Background
Lottery numbers may be provided in lottery markets around the world with mechanical shake or random number generators to draw the lottery. The mechanical shaking needs manpower and a mechanical device, and the working condition and the manpower of the mechanical device can influence the randomness of lottery number issuing. The random number generator is opaque in the process of recording the prize, so that the situation that a specific ticket number is generated according to a statistical result may exist, the possibility that data is tampered by insiders or hackers cannot be avoided, and the problems of no disclosure and no credibility exist.
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.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to solve the technical problems that the number output result of the prior lottery ticket is possibly not random, and the number output process is not transparent, so that the lottery ticket is not public and is not credible.
In order to achieve the above object, in a first aspect, the present invention provides a lottery random number issuing method using a block chain, including the following steps:
the lottery client 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 as a lottery number;
the lottery client performs Hash operation on the transfer request to obtain a first Hash value and obtain the total block output number n of the current round of block output nodes; n is a positive integer;
the lottery client divides the first hash value by the total block number n to obtain a corresponding first remainder m, obtains an mth block in the total blocks in the current round, and performs block hash operation on the mth block to obtain a second hash value; m is a positive integer less than n;
the lottery client divides the second 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 numerical value change interval of the lottery number.
Optionally, the first hash value is hexadecimal data; the lottery client divides the first hash value by the total number of blocks n to obtain a corresponding first remainder m, and specifically comprises the following steps:
the lottery client converts the first hash value into corresponding decimal data;
and the lottery client divides the first hash value converted into decimal data by the total block number n to obtain a corresponding first remainder m.
Specifically, the transfer request is sent to the lottery client, and the receiver may be other nodes in the blockchain or the lottery client itself.
Optionally, the second hash value is hexadecimal data; the lottery client divides the second hash value by a preset integer to obtain a corresponding second remainder, and the method specifically comprises the following steps:
the lottery client converts the second hash value into corresponding decimal data;
and the lottery client divides the second hash value converted into decimal data by a preset integer to obtain a corresponding second remainder.
Optionally, when the preset integer is 10, the lottery number is changed within a range of 0-9.
Optionally, when the preset integer is 100, the lottery drawing number varies from 00 to 99, and if the second remainder is less than 10, the ten digits of the second remainder are output after being zero-padded.
In a second aspect, the present invention provides a lottery random number issuing apparatus using a block chain, comprising:
the lottery number issuing 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 as a lottery number;
the number output calculation unit is used for carrying out Hash operation on the transfer request to obtain a first Hash value, obtaining the total block output number n of the current round of block output nodes, dividing the first Hash value by the total block output number n to obtain a corresponding first remainder m, obtaining the mth block in the current round of total blocks, and carrying out block Hash operation on the mth block to obtain a second Hash value; n is a positive integer, m is a positive integer less than n;
the lottery number output unit is used for dividing the second 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 numerical value change interval of the lottery number.
It is understood that the lottery random number issuing device to which the blockchain is applied may be a lottery client or other lottery devices.
Optionally, the first hash value is hexadecimal data; the number-out calculation 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 second hash value is hexadecimal data; the lottery number issuing unit converts the second hash value into corresponding decimal data; and dividing the second 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 number is changed within a range of 0-9.
Optionally, when the preset integer is 100, the lottery number is changed within a range of 00-99, and if the second remainder is less than 10, the tens of the lottery number is output after being zero-padded.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
the invention provides a lottery random number issuing method and equipment applying a block chain, which are used for issuing lottery numbers based on block chain transfer service, wherein the lottery number issuing process depends on the hash value of block chain data, the hash operation has randomness, and the result of two random hash operations is finally utilized to divide the block number in the current round of blocks and the hash value of a block in a random block to obtain the final lottery number issuing, so that the randomness of the lottery number issuing process is ensured.
The invention provides a lottery random number issuing method and equipment applying a block chain. In addition, data in the block chain can be found, so that the lottery number issuing process can be supervised by the public, the lottery number issuing process based on the block chain is guaranteed to be open, reliable and searchable, and the block chain lottery number issuing method has a good application prospect.
Drawings
Fig. 1 is a flow chart of a lottery random number issuing method using a block chain according to the present invention;
fig. 2 is a lottery random number issuing equipment architecture diagram of the application block chain provided by the 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 lottery random number issuing method using a block chain according to the present invention; as shown in fig. 1, the method comprises the following steps:
s11, the lottery client 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 as a lottery number;
s12, the lottery client performs hash operation on the transfer request to obtain a first hash value and obtain the total block output number n of the current round of block output nodes; n is a positive integer;
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 consensus mode of a granted permission proof mechanism (DPOS), for example, there are 21 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 126; each block output corresponds to one block, and each round of block output nodes corresponds to 126 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.
S13, the lottery client divides the first hash value by the total number of blocks n to obtain a corresponding first remainder m, and obtains an mth block in the total blocks of the current round, and performs a block hash operation on the mth block to obtain a second hash value; m is a positive integer less than n;
s14, dividing the second hash value by a preset integer by the lottery client to obtain a corresponding second remainder; the second remainder is the number of the lottery; the preset integer determines the numerical value change interval of the lottery number.
Optionally, the first hash value is hexadecimal data; the lottery client divides the first hash value by the total block number n to obtain a corresponding first remainder m, and specifically includes the following steps:
the lottery client converts the first hash value into corresponding decimal data;
and the lottery client divides the first hash value converted into decimal data by the total block number n to obtain a corresponding first remainder m.
Optionally, the second hash value is hexadecimal data; the lottery client divides the second hash value by a preset integer to obtain a corresponding second remainder, and the method specifically comprises the following steps:
the lottery client converts the second hash value into corresponding decimal data;
and the lottery client divides the second hash value converted into decimal data by a preset integer to obtain a corresponding second remainder.
Optionally, when the preset integer is 10, the lottery number is changed within a range of 0-9.
Optionally, when the preset integer is 100, the lottery drawing number varies from 00 to 99, and if the second remainder is less than 10, the ten digits of the second remainder are output after being zero-padded.
Specifically, when the preset integer is 10, a lottery number issuing operation is performed once, and a number which changes within the range of 0-9 is output. When the preset integer is 100, carrying out lottery number output operation once, and outputting numbers with two digits changing in the range of 00-99. It should be noted that, in the lottery number issuing scheme provided by the present invention, the preset integer may be set according to actual needs. Not limited to only 10 or 100. For example, if the predetermined integer is 8, the output random lottery number will vary from 0 to 7. The preset integer can be 50, and the output random lottery number can be changed within the range of 00-49, and the like. The preset integer can be selected by those skilled in the art according to actual needs to meet the requirement of the variation range interval of the corresponding lottery number. The invention is not limited in any way.
It is understood that if a 12-digit lottery number is required, the preset integer may be set to 10, and one-digit lottery numbers are issued one time, and 12 lottery numbers are issued, and finally a 12-digit lottery number is obtained. Or the preset integer is set as 100, each time a two-digit lottery number is issued, 6 times of lottery number issuing are carried out, and finally a 12-digit lottery number is obtained.
If a 7-digit lottery number needs to be issued, the preset integer is set to 10, a one-digit lottery number is issued each time, 7 times of lottery issuing are carried out, and finally a 7-digit lottery number is obtained. Or the preset integer is set as 100, a two-digit lottery number is played each time, 3 times of lottery number playing is carried out, then the preset integer is set as 10, one time of lottery number playing is carried out, and finally a 7-digit lottery number is obtained through accumulation.
Fig. 2 is an architecture diagram of a lottery random number issuing device applying a block chain according to the present invention, as shown in fig. 2, including the following units:
the lottery number issuing initiating unit 21 is 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 as a lottery number;
the number output calculation unit 22 is configured to perform hash operation on the transfer request to obtain a first hash value, obtain a total output block number n of a current round of block output nodes, divide the first hash value by the total output block number n to obtain a corresponding first remainder m, obtain an mth block in the current round of total blocks, and perform block hash operation on the mth block to obtain a second hash value; n is a positive integer, m is a positive integer less than n;
the lottery number issuing unit 23 is configured to divide the second 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 numerical value change interval of the lottery number.
Optionally, the first hash value is hexadecimal data; the out-number calculation unit 22 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 second hash value is hexadecimal data; the lottery ticket number issuing unit 23 converts the second hash value into corresponding decimal data; and dividing the second 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 number is changed within a range of 0-9.
Optionally, when the preset integer is 100, the lottery number is changed within a range of 00-99, and if the second remainder is less than 10, the tens of the lottery number is output after being zero-padded.
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 lottery random number-giving method applying a block chain is characterized by comprising the following steps:
the lottery client 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 as a lottery number;
the lottery client performs Hash operation on the transfer request to obtain a first Hash value and obtain the total block output number n of the current round of block output nodes; n is a positive integer;
the lottery client divides the first hash value by the total block number n to obtain a corresponding first remainder m, obtains an mth block in the total blocks in the current round, and performs block hash operation on the mth block to obtain a second hash value; m is a positive integer less than n;
the lottery client divides the second 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 numerical value change interval of the lottery number;
the second hash value is hexadecimal data;
the lottery client divides the second hash value by a preset integer to obtain a corresponding second remainder, and the method specifically comprises the following steps:
the lottery client converts the second hash value into corresponding decimal data;
and the lottery client divides the second hash value converted into decimal data by a preset integer to obtain a corresponding second remainder.
2. The method for randomly numbering lottery tickets using blockchains according to claim 1, wherein the first hash value is hexadecimal data;
the lottery client divides the first hash value by the total block number n to obtain a corresponding first remainder m, and specifically includes the following steps:
the lottery client converts the first hash value into corresponding decimal data;
and the lottery client divides the first hash value converted into decimal data by the total block number n to obtain a corresponding first remainder m.
3. The method for randomly numbering lottery tickets by using a block chain according to any of claims 1 to 2, wherein the lottery ticket number varies from 0 to 9 when the predetermined integer is 10.
4. The method for randomly numbering lottery tickets using a block chain according to any of claims 1 to 2, wherein the lottery numbers vary from 00 to 99 when the predetermined integer is 100, and wherein the lottery numbers are output after zero padding of ten bits if the second remainder is less than 10.
5. A lottery random number issuing apparatus using a block chain, comprising:
the lottery number issuing 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 as a lottery number;
the number output calculation unit is used for carrying out Hash operation on the transfer request to obtain a first Hash value, obtaining the total block output number n of the current round of block output nodes, dividing the first Hash value by the total block output number n to obtain a corresponding first remainder m, obtaining the mth block in the current round of total blocks, and carrying out block Hash operation on the mth block to obtain a second Hash value; n is a positive integer, m is a positive integer less than n;
the lottery number output unit is used for dividing the second 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 numerical value change interval of the lottery number;
the second hash value is hexadecimal data; the lottery number issuing unit converts the second hash value into corresponding decimal data; and dividing the second hash value converted into the decimal data by a preset integer to obtain a corresponding second remainder.
6. The lottery random number issuing device using the block chain according to claim 5, wherein the first hash value is hexadecimal data; the number-out calculation 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.
7. The apparatus for randomly issuing lottery tickets by using a block chain according to any one of claims 5 to 6, wherein the lottery ticket issuing number varies from 0 to 9 when the predetermined integer is 10.
8. The apparatus for randomly issuing lottery tickets according to any one of claims 5 to 6, wherein the lottery ticket issuing number varies from 00 to 99 when the predetermined integer is 100, and wherein the lottery ticket issuing number is output after zero padding of ten bits if the second remainder is less than 10.
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