Authentication system for preventing replication of authentication target apparatus authenticated by authentication apparatus
US11777920B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Aug 28, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/608
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An authentication-target apparatus receives identification information, a password, and a challenge from an authentication apparatus, hashes the password, executes password authentication by reading out comparison information corresponding to the identification information and comparing the hashed password and the comparison information, generates a response based on the challenge in a case where the password authentication is successful, and transmits the response to the authentication apparatus. The authentication-target apparatus obtains an encrypted authentication calculation code, which is a stored program code corresponding to the identification information, decodes an executable authentication calculation code from the encrypted authentication calculation code using the password successful in the password authentication, and generates the response by executing the authentication calculation code by applying the challenge to the authentication calculation code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.