公开(公告)号：US20210377048A1

公开(公告)日：2021-12-02

申请号：US17366679

申请日：2021-07-02

Applicant: Beijing Baidu Netcom Science and Technology Co., Ltd.

Inventor： Yuao CHEN ,  Runyao DUAN ,  Lijing JIN

IPC: H04L9/32 ,  H04L9/08

Abstract: This application discloses a digital signature method, a signature information verification method, a related apparatus and an electronic device, and relates to the field of information security in quantum computing. The digital signature method includes: acquiring a to-be-sent file and a private key used by a first electronic device for digital signature, where the private key includes a first invertible matrix; generating, based on a randomly generated second invertible matrix and a first tensor, a second tensor isomorphic to the first tensor; using a hash function to digitally sign the to-be-sent file based on the second tensor, to obtain a first character string; generating, based on the first character string, the first invertible matrix and the second invertible matrix, signature information provided by the first electronic device for the to-be-sent file.