CN109847365A - A kind of anti-cheating method and system towards the application of block chain - Google Patents
A kind of anti-cheating method and system towards the application of block chain Download PDFInfo
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- CN109847365A CN109847365A CN201910068885.1A CN201910068885A CN109847365A CN 109847365 A CN109847365 A CN 109847365A CN 201910068885 A CN201910068885 A CN 201910068885A CN 109847365 A CN109847365 A CN 109847365A
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Abstract
The invention discloses a kind of anti-cheating methods towards the application of block chain, comprising: defines game rule, and will be in the game rule write-in decentralization file system；Game contract is created, the game contract calls general random algorithm contract by providing output area；Write-in input instruction, general random algorithm contract generate equally distributed random number output as a result, and through transaction log record in block chain according to input instruction；Game contract is according to the random output as a result, generating game output according to game rule as a result, passing through transaction log record in block chain, and return result to application.The present invention by establish it is a set of can verify that method towards the application of block chain, in the case where block chain is applied and the source code of intelligent contract is underground, realize the verifying to block chain application rule and block chain application result.Both it ensure that the fair characteristic of block chain application, and prevented developer from practising fraud；It is effectively protected the intellectual property of block chain application again.
Description
Technical field
The invention mainly relates to the present invention relates to block chain technical fields, specifically, being related to a kind of answering towards block chain
Anti-cheating method and system.
Background technique
Decentralization storage system is that data dispersion is stored in more independent equipment.Traditional network storage system
System stores all data using the storage server concentrated, storage server become system performance bottleneck and reliability and
The focus of safety is not able to satisfy the needs of Mass storage application.Decentralization network store system is using expansible
System structure, shares storage load using more storage servers, positions storage information using location server, it is not only increased
Reliability, availability and the access efficiency of system, are also easy to extend.
Block chain is a kind of fusion product in each field of computer, and mainly distributed memory system and cryptography melts
It closes.So-called block chain refers to and stores certain data block within a block with tree structure that then block forms chain and is distributed in more
On autonomous device.Wherein data block, the formation unlock of block have used the product of cryptography, have enhanced security performance.
Intelligent contract can regard storage as and operate in one section of program code in block chain network, be to participate in a certain work
The active rule and relevant contract that dynamic related side approves jointly, and these rules and agreement are shown by way of code
Come, is placed in block chain network and goes to execute.Moreover, intelligent contract is once reached common understanding and be placed in block chain network,
It is transparent and not modifiable to all movable participants.Intelligent contract implementation procedure, state, inputoutput data also can
It is recorded in block chain network, and is that can not change, participant is transparent to whole show.
Since intelligent contract code is that full disclosure is transparent and open source, code full disclosure are sudden and violent by the whole of oneself
Reveal to owner, therefore safety, there are risk, attacker is easily found the loophole of permission control aspect, and finds around limit
The mode of system, to bring about great losses to game application person.
In addition, in the prior art, when passing through intelligent contract storing data using the system of block chain, generally requiring basis
The demand of business customizes different data structures, then realizes out by different contracts.But the business of this scheme is multiple
It is miscellaneous degree it is higher, the intelligent contract type needed is extremely more, thus between the development teams of each mechanism the difficulty of coordinated development and at
This is also quite huge, and the Gas of contract consumption is larger, and the versatility of contract is poor.
Therefore, such as game application is applied for block chain, is realized the case where not increasing income in the game service for ensuring core
Under, how to prevent from practising fraud, it is ensured that the technical issues of problem of game result justice is urgent need to resolve in the art.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of anti-cheating method towards the application of block chain, implementation rule
Open and clear with process, using the repeatable verifiability of result, rule be can verify that, prevent the cheating of application.
A kind of anti-cheating method towards the application of block chain, comprising: define game rule, and the game rule is write
Enter in decentralization file system；Game contract is created, the game contract calls general random calculation by providing output area
Method contract；Write-in input instruction, random algorithm contract generate equally distributed random number output as a result, and leading to according to input instruction
Transaction log record is crossed in block chain；Game application uses game contract and random algorithm contract, meets game using itself
Rule, without open source.Game contract is according to the random output as a result, generating game output as a result, writing according to game rule
Enter in the transaction log, and returns result to application.The output that game application must generate has to comply with game rule, trip
Play can upgrade game rule, but can not delete game rule, and all modifications are visible to owner.
Preferably, the game rule includes input, output rule, is started with #rule-begin, #rule-end
All rows between row, and defined according to the regular file format of the decentralization file system.
Preferably, the regular file format are as follows: the first behavior rule name；Second rule of conduct explanation；The third line
For author information；Fourth line is mailbox message；Remaining rule of conduct definition.
Preferably, the game rule includes input, output rule, and the input rule, output rule are in going
Regular file format in heart file system is that row starts as random output value, and with can all separate, behind be regular output
Value, facilitates the validity of any node verification rule.
Preferably, the random number contract log, for recording the input and output of random number as a result, and the random knot of output
Fruit does not have predictable characteristic；Game contract log cannot for recording game output as a result, application and rule are matched
Occur not meeting the input and output value of game rule；If there is, it was demonstrated that application cheating；
Preferably, the log rule of the random number contract is defined as: random (input, output), they distinguish
Indicate that the value output and input, maximum indicate that range can be with -2^511~2^511；The regular log definition of the game contract
Are as follows: play (input, rule) indicates that the random number of game input is the output of front, rule and the rule ID one being written in advance
It causes.
It preferably, further include verification method, for obtaining the verifying of result to the application；Specifically:
Inquire the log of random number contract, game contract log；Whether the output for checking the log of random number contract is sufficiently random,
And can not by output and input calculate it is following as a result, rule；Check game contract whether with game contract log
Output and input whether consistent, such as inconsistent, then game result cheating；Otherwise, continue to read in decentralization file system
Game rule, whether detection game contract log output is consistent with game rule, unanimously then illustrates that game application is normal, inconsistent
Then illustrating game application, there are cheating suspicion, pass through rule and log confirmation cheating evidence.
The present invention also provides a kind of anti-cheating systems towards the application of block chain, comprising: at least one processor, at least one
The computer program instructions of a memory and storage in the memory, when the computer program instructions are by the processing
Method described in the general lot applied towards block chain and verifying is realized when device executes.
Compared with prior art, the invention has the benefit that
By intelligent contract realize draw lots rule and process it is open and clear, by game result with application presentation being associated with
Relationship is stored in decentralization storage system with document form, realizes can verify that for block chain this link of application result
Property.The present invention uses contract log and decentralization document storage system double verification, and effectively realize lot result can not
It distorts, by the realization for protecting specific service logic.The present invention can verify that by establishing a set of outside towards what block chain was applied
Method, it is ensured that the Distributed Application based on block chain can be applied in block chain and the underground open source of source code of intelligent contract
In the case where, realize the verifying to game block chain application rule and block chain application result.Both block chain application had been ensure that
Fair characteristic, prevents developer from practising fraud；The characteristic of neutralisation is taken full advantage of, meanwhile, and effectively protect block
The intellectual property of chain application.
The rule (game rule) that block chain is applied is written in decentralization file system and is given by method of the invention
It is open, it will be stored in block chain after the building of Dapp intelligence contract, realize that Dapp intelligence contract can using random algorithm contract
It is confirmatory, to realize the vision of the specific service code of underground block chain application, effectively evades plagiarism and hacker attacks
Hit behavior；In addition, the rule in write-in decentralization file system can be modified, the lot for meeting the application of different blocks chain is needed
It asks, improves the versatility of intelligent contract.Since the decentralization file system files of use have permanent, modification herein
Under the premise of actually retaining old version, generates new rule and the application of block chain and bound, subsequent log verifying
It needs using new rule.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the frame diagram of the anti-cheating method towards the application of block chain；
Fig. 2 is the general flow chart of the anti-cheating method towards the application of block chain；
Fig. 3 is the specific flow chart of Fig. 2；
Fig. 4 is the flow chart of the general anti-cheating method towards the application of block chain.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig.1, Dapp block chain decentralization application defines rule in write-in decentralization storage system, every
In a transaction write-in block chain transaction log.Decentralization storage system is that data dispersion is stored in more independent equipment
On, content have can not distort characteristic and old version characteristic.Traditional network store system is using the storage server concentrated
All data are stored, cannot achieve can not distort characteristic.Go the document storage system of neutralisation using point-to-point storage knot
Structure shares storage load using node machines all in network, utilizes content Hash and distributed hashing Hash positioning storage position
Set, it not only increases the reliability of system, availability, due to content Hash be generated by content, if it is interior have it is any
Modification, cryptographic Hash will be entirely different, simultaneously because network is decentralization, any personal and collective is unable to control entire net
Network ensures that the reliability of content and the characteristic that can not practise fraud.
Specifically, referring to fig. 2, Fig. 3, it is a kind of towards block chain application anti-cheating method, comprising the following steps:
S1: game rule is defined；
S2: game rule is written in decentralization file system；
S3: creation game contract；
S4: game contract calls general random algorithm contract by providing output area；
S5: random algorithm contract generate the output of equally distributed random number as a result,
S6: output result is by transaction log record in block chain；
Random effect is exported game result according to game rule by S7:Dapp, and transaction log record in block chain.
Game block chain apply if there is surmount game rule as a result, by external double verification, it is possible to determine that swim
There are cheatings for play application.
Wherein, in step S1 and S2, game rule includes input, output rule, with #rule-begin, #rule-end
All rows between the row of beginning, and defined according to the regular file format of the decentralization file system.
The regular file format of file system storage is defined as follows:
First behavior rule name:
Second rule of conduct explanation:
Third behavior author information, such as: XX
Fourth line is mailbox message:zhang@xx.com
Remaining rule of conduct definition；
Such as common dice game, rule description uses odds, it is as follows:
1, -50, it indicates that yardage is 1, pays for 50 to other side；Analogize in turn below
2,-20
3,-10
4,10
5,20
6,50
For other rules, more complicated definition format can be taken, it is desirable that row starts as random output value, and with all
Separately, it is rule output value behind, facilitates the validity of any node verification rule.Output is random and can verify that.Rule
The output of file and output area define, and random output no more than formulates range.
Game rule that decentralization document storage system is written as needed carries out hash calculating, generate one it is isometric
Coding, each rule are owned by unique hash value, meanwhile, each hash value is recorded in block chain to be retained in block.
In S3, Dapp is created game contract (also referred to as intelligent contract), the rule including contract title and code, when
When the contract information of the game contract changes, data column can be inquired by data management interface according to the content of contract
Table, obtain data address be associated with contract address；The life of contract address is associated with described according to institute's contract title, the data address
The game contract of Cheng Xin.Wherein, the content of game contract by data management interface inquire data list, obtain data address and
Association contract address includes: to judge whether contract language used in the creation game contract process is supported to traverse the data
All values relevant to mapping in list；If it is described intelligence contract language do not support to traverse in the data list it is all with
Relevant described value is mapped, then using the content of data intelligence contract described in name acquiring interface polls, obtains data name
Claim and is associated with contract title；Interface is obtained by data address, the data list is inquired according to the data name, obtain institute
State data address；Interface data list according to the association contract name query is obtained by contract address, is obtained described
Association.
When above-mentioned game rule changes, it can be associated with the change of game contract, to establish new game contract, improved
The versatility of the methods of sampling.
In S4 and S5, S6, game contract calls general random calculation by calling contract random function to provide output area
Method contract, write-in input instruction, random algorithm contract generate equally distributed random number output as a result, write-in according to input instruction
Input, the process for exporting result are all recorded in the transaction log in block chain.
Certainly, the selection of random function, may refer to a kind of method disclosed in patent 201810489085.2, and this method will
Block chain technology is introduced into the generating process of random number, distributes to each of block chain for the random function of random number is purposive
Node while carrying out the maintenance of itself by node, receives the random seed from other nodes, to generate newly random
Number.It is of course also possible to select suitable random function according to block chain application characteristic.
Using random algorithm contract, random algorithm contract code can be disclosed, and underground game contract (intelligent contract)
Code protect game contract code under the conditions of meeting the rule mechanism of block chain " open, transparent, common recognition ", significantly improve
The safety of drawing method.
Block chain log rule is defined as follows:
For random number contract log rule are as follows: random (input, output), they respectively indicate input and it is defeated
Value out, maximum indicate that range can be with -2^511~2^511
In step S7, the random effect (also referred to as random number) that Dapp is exported according to general random algorithm contract is advised according to game
Game result is then exported, and feeds back to Dapp application, meanwhile, the above-mentioned process of exchange of the transaction log record of block chain, including with
Machine number, output result etc..
To indicate difference, game contract log definition are as follows: play (input, rule) indicates that the random number of game input is
The output of front, rule are consistent with the rule ID being written in advance.
Drawing method of the invention, the rule that block chain is applied (game rule) are written in decentralization file system simultaneously
Give disclosure, will be stored in block chain after the building of Dapp intelligence contract, realize that Dapp is intelligently closed using random algorithm contract
About verifiability has effectively evaded plagiarism and hacker attack behavior to realize the vision of the code of underground intelligent contract；
In addition, the rule in write-in decentralization file system can be modified, the lot demand of different blocks chain application is met, is improved
The versatility of intelligent contract.
In a specific embodiment, referring to Fig. 4, above-described embodiment further includes testing for obtaining result to the application
Card, specific steps are as follows:
Inquire the log of random number contract, game contract log；
Whether the output for checking the log of random number contract is sufficiently random, and can not calculate future by outputting and inputting
As a result, rule；
Whether whether verification game contract outputs and inputs with game contract log consistent, such as inconsistent, then game result
Cheating；
Otherwise, continue read decentralization file system in game rule, detection the log of game contract output whether and
Game rule is consistent, unanimously then illustrates that game application is normal, inconsistent, illustrates that game application there are cheating suspicion, passes through rule
Cheating evidence is confirmed with log.
The present invention realizes the open and clear of game rule and process by intelligent contract, and game result and application are presented
Incidence relation be stored in decentralization storage system with document form, realize and draw lots this link in the application of block chain
Verifiability.The present invention uses contract log and decentralization document storage system double verification, effectively realizes lot result
Can not distort, by protecting the realization of specific service logic, can prevent game from making with the intellectual property of effective protection game
Disadvantage will greatly be promoted by achieving preferable balance in the decentralization characteristic of block chain, then open and clear and intellectual property protection
The exploitation enthusiasm applied into block chain.
In a specific embodiment, the present invention also provides a kind of general Draw lots Systems towards the application of block chain, comprising:
At least one processor, the computer program instructions of at least one processor and storage in the memory, when the meter
The anti-cheating method applied towards block chain is realized when calculation machine program instruction is executed by the processor.
The decentralization storage system that this system uses has the function of can not to distort and old version, and the application of block chain can be with
Upgrade game rule, escalation process is to game contract as it can be seen that old version is visible to owner.The modification of game rule each time
It is equal to a newly-built rule, meta-rule exists and transaction log constitutes and permanently can verify that record.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of anti-cheating method towards the application of block chain characterized by comprising
Game rule is defined, and will be in the game rule write-in decentralization file system；
Game contract is created, the game contract calls general random algorithm contract by providing output area；
Write-in input instruction, general random algorithm contract generate equally distributed random number output as a result, simultaneously according to input instruction
Through transaction log record in block chain；
Game contract is according to the random output as a result, generating game output as a result, passing through transaction log according to game rule
It is recorded in block chain, and returns result to block chain application.
2. the anti-cheating method according to claim 1 towards the application of block chain, which is characterized in that the game rule
Including inputting, exporting rule, with #rule-begin, all rows between the row of #rule-end beginning, and center is gone to according to described
Change the regular file format definition of file system.
3. the anti-cheating method according to claim 2 towards the application of block chain, which is characterized in that the rule file
Format are as follows: the first behavior rule name；Second rule of conduct explanation；Third behavior author information；Fourth line is mailbox message；It is remaining
Lower rule of conduct definition.
4. the anti-cheating method according to claim 1 towards the application of block chain, which is characterized in that the game rule
Including inputting, exporting rule, the input rule, output rule are fixed in the rule file in decentralization file system
Justice, the output of rule file and output area define, and random output no more than formulates range.
5. the anti-cheating method according to claim 1 towards the application of block chain, which is characterized in that the transaction log
Include:
Random number contract log is exported for recording the input and output result game contract log of random number for recording game
As a result.
6. the anti-cheating method according to claim 5 towards the application of block chain, which is characterized in that the random number is closed
Log rule about is defined as: random (input, output), they respectively indicate the value output and input, and maximum indicates model
Enclosing can be with -2^511~2^511；
The regular log definition of the game contract are as follows: play (input, rule) indicates that the random number of game input is front
Output, rule is consistent with the rule ID being written in advance.
7. -5 any anti-cheating method towards the application of block chain according to claim 1, which is characterized in that further include using
In obtaining the verifying of result to the drawing method；Specifically:
Inquire the log of random number contract, game contract log；
Whether the output for checking the log of random number contract is sufficiently random, and can not calculate following knot by outputting and inputting
Fruit, or rule；
Whether whether verification game contract outputs and inputs with game contract log consistent, such as inconsistent, then game result is practised fraud；
Otherwise, continue read decentralization file system in game rule, detection the log of game contract output whether and game
It is regular consistent, unanimously then illustrate that game application is normal, inconsistent, illustrating game application, there are cheating suspicion, pass through rule and day
Will confirmation cheating evidence.
8. it is a kind of towards block chain application anti-cheating system, it is characterised in that: include: at least one processor, at least one
The computer program instructions of memory and storage in the memory, when the computer program instructions are by the processor
Such as method of any of claims 1-7 is realized when execution.
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