PUBLIC RANDOM NUMBER GENERATION METHOD AND DEVICE BASED ON BLOCKCHAIN

WIPO Patent Application WO/2021/204180

A1

Disclosed is a public random number generation method based on a blockchain. The method comprises: selecting a node group G containing N trusted nodes; determining a first time point tm and a second time point tn, wherein the first time point tm is earlier than the second time point tn, the first time point tm and the second time point tn are respectively a generation time point of an m-th block and a generation time point of an nth block, and the m-th block is fixed and cannot be tampered at tn; at the first time point tm, enabling each of the N trusted nodes to separately generate a sub-random number rj, wherein j=1, 2, ..., N, performing delayed encryption on the sub-random number rj, and placing delayed encryption results in the m-th block, wherein the sub-random numbers rj are components forming a random number X; and at the second time point tn, decrypting the delayed encryption results to obtain decrypted data of all delayed encryption results, the decrypted data being all sub-random numbers rj, and performing operation on all sub-random numbers rj to obtain the random number X as a finally available public random number.

JPH08305551	RANDOM NUMBER GENERATOR
JP2013534336	Bit sequence generator
WO/2021/093244	RANDOM NUMBER GENERATION METHOD, BLOCKCHAIN NODE, SYSTEM AND MEDIUM

CHEN BANGDAO (CN)
ROSCOE ANDREW WILLIAM (GB)

PCT/CN2021/085887

October 14, 2021

April 08, 2021

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THE BLOCKHOUSE TECH LIMITED (GB)
CHEN BANGDAO (CN)

G06F7/58; G06F21/60; G06F21/64

CN111488134A	2020-08-04
CN109039648A	2018-12-18
CN109327311A	2019-02-12
CN110865793A	2020-03-06

BEIJING TIAN LAN INTELLECTUAL PROPERTY AGENCY (CN)

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