Digital signature method and apparatus
US10277403B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Aug 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3026
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for signing and subsequently verifying a digital message, including the following steps: generating an irreducible monic polynomial f(x) of degree n in a ring Fq[x]; generating an irreducible monic polynomial F(y) of degree n in a ring Fq[y]; producing first and second finite fields as Fq[x]/(f(x)) and Fq[y]/(F(y)), respectively; producing a secret isomorphism from the first finite field to the second finite field; producing and publishing a public key that depends on F(y); producing a private key that depends on the secret isomorphism; producing a message digest by applying a hash function to the digital message and the public key; producing a digital signature using the message digest and the private key; and performing a verification procedure utilizing the digital signature and the public key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.