Password-authenticated public key establishment
US11296875B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 27, 2020 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Sep 22, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for cryptographic key provisioning includes, via a main authentication server (MAS), generating a first secret key and registering a client by performing a first portion of a first instance of a distributed threshold oblivious pseudo-random function. The first instance of the function results in the client obtaining a root secret key and the MAS obtaining a corresponding root public key. The method includes authenticating the client to the MAS by performing a first portion of a second instance of the distributed threshold oblivious pseudo-random function. The second instance of the function results in the client obtaining the root secret key. Information stored by the client, the first secret key, and a second secret key generated by a support authentication server are inputs to at least one of the first and second instances of the distributed threshold oblivious pseudo-random function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.