Title:
RANDOM NUMBER GENERATION METHOD, BLOCKCHAIN NODE, SYSTEM AND MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/093244
Kind Code:
A1
Abstract:
The present invention provides a random number generation method, a blockchain node, a system and a medium. Said method comprises: constructing, on the basis of a verifiable key sharing mechanism, M public and private key fragment pairs of each node of N nodes participating in consensus; calculating N numerical values corresponding to codes of each node and sending same to nodes complying with the corresponding codes; when there are blocks requiring consensus, combining a first signature of each node and constructing a prepare vote of each node; constructing a unique public key by using a jth public key fragment of each blockchain node participating in consensus; when the number of nodes of which the prepare vote passes the verification reaches M, using the prepare votes of M nodes to construct a second signature; and verifying the second signature so as to determine the second signature as a random number. In the present invention, a random number can be generated by combining a verifiable key sharing mechanism and a preset signature algorithm, and the random number is decentralized, uncontrollable, unpredictable, verifiable and available in real time.
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Inventors:
WU XIAOYONG (CN)
Application Number:
PCT/CN2020/080433
Publication Date:
May 20, 2021
Filing Date:
March 20, 2020
Export Citation:
Assignee:
SHENZHEN ONETHING TECH CO LTD (CN)
International Classes:
G06F7/58; G06Q20/38
Foreign References:
| CN110825349A | 2020-02-21 | |||
| CN110198213A | 2019-09-03 | |||
| CN109685505A | 2019-04-26 | |||
| CN109981281A | 2019-07-05 | |||
| US20190325684A1 | 2019-10-24 | |||
| US20190158272A1 | 2019-05-23 |
Attorney, Agent or Firm:
SHENZHEN SCIENBIZIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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