Authentication method, authentication device, authentication target device and image forming apparatus
US10965451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2019 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Oct 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3271
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An authentication method includes: at a first device, selecting an original key in which a first identifier has a first value and a second identifier has a second value from m original keys and generating an authentication key based on the selected original key and the authentication identifier; at a second device, selecting an authentication key generated from the original key in which the first identifier has the first value and the second identifier has the second value from n authentication keys, generating response data based on challenge data and the authentication key, and notifying the generated response data to the first device; at the first device, generating verification data based on the challenge data and the authentication key, and authenticating the authentication target device by comparing the verification data with the response data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.