Cryptographic authentication process
US7451314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2002 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Dec 23, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cryptographic authentication method including a first step during which a first entity (A) to be authenticated sends an authenticator second entity (B) a message protected by a cryptographic algorithm and a secret key (Ks). During a second step, the second entity (B), after receiving said message, carries out operations selected from the group comprising completely verifying the authentication of the received protected message by means of said cryptographic algorithm and a verification key (Kv), delaying said complete verification, partly verifying said authentication, partly verifying said authentication and completing the verification subsequently, and omitting to verify said authentication. One of these operations is chosen as a function of the degree of certainty that the second entity (B) wishes to obtain as to the authentication of the first entity (A) and being concealed from the first entity (A).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.