Patent · US Active

Method for restoring public key based on SM2 signature

US10778428B1 · kind B1 · utility

2Cited by

0References

18Claims

0Family size

Assignee

Allibaba Group Holding Limited · KY

Inventors

Yao-Hsien Wang
Hao Lei · Beijing, CN
Li Lin · Hangzhou City, CN

Key dates

Filing date	Dec 13, 2019
Grant date	Sep 15, 2020
Priority date	—
Expiry date	Dec 13, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/64
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for recovering and verifying a public key. One of the methods includes accepting information encoding parameters of an elliptic curve, a published public key, a hash value of a message, a digital signature, and an identification parameter; generating a recovered public key based on the parameters of the elliptic curve, the hash value of the message, the digital signature, and the identification parameter; comparing the published public key and the recovered public key to verify the published public key.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.