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The IP.com Prior Art Database
Undisclosed
English (United States)
An apparatus of the anti-cheat random draw Problem: Pick 5 person from 100 candidate
• Random select by computer program
• Allocate a unique number for each candidate, e.g. 1,2,ÿ,100 • Generate 5 random number(no-repeat) in 1,2,ÿ,100 • The persons corresponding to the generated 10 numbers will be the final
list • Manual select card
• Allocate a card with the unique number for each candidate, e.g. 1,2,ÿ,100 • Put all card into a box • Random pick out 5 card • The persons corresponding to the 5 cards will be the final list
Traditional methods
The present method – Framework
Anti-fraud with blockchain
Advantages of our method
• No public notary • RNG (random number generator) can’t control all • Everyone’s input will affect the result • No one can control the final result unless he control the all input • Program does not know how choose a “friend’s” pre-labeled number
Our idea • Every one choose a string, encrypt it with shared string and submitted the signed
message to blockchain, only(submitter know the string) • The program generate the random numbers in candidates ranges • Candidate decrypt his/her own string
• The chaincode computed the root hash by Merkle for all candiates’ string, and compute the candidate’s hash with own string and root hash
• Sort the hash to the new sequence • Pick the 5 candidate from the new sequence by the 5 random number
