公开(公告)号：US12192347B2

公开(公告)日：2025-01-07

申请号：US17917000

申请日：2021-04-08

Applicant: THE BLOCKHOUSE TECHNOLOGY LIMITED ,  Bangdao Chen

Inventor： Bangdao Chen ,  Andrew William Roscoe

IPC: H04L9/08 ,  G06F7/58 ,  H04L9/00

Abstract: Disclosed is a public random number generation method based on a blockchain, including: selecting a node group G containing N trusted nodes; determining a first time point tm and a second time point tn respectively for generating an m-th/n-th block, wherein the former is earlier, 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 as a component forming a random number X, wherein j=1, 2, . . . , N, on which delayed encryption is performed, with corresponding results placed in the m-th block; and at the second time point tn, decrypting the delayed encryption results to obtain decrypted data of them all that are all of sub-random number rj, on which operation is performed to obtain the random number X as a final available public random number.