Methods of proving validity and determining validity, electronic device, server and computer programs
US10511440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2016 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Apr 25, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device provides a one-time proof of knowledge about a one-time signing key to a server without revealing the one-time signing key by computing a hash as a hash function from the one-time signing key, and transmitting, to the server, the computed hash, an identity associated with the electronic device and a hash path of the hash. The server receives the message from the device and checks whether the hash corresponds to a one-time signing key for a root hash included in a public certificate associated with the identity, checks whether an index corresponding to the hash path from the one-time signing key to the root hash corresponds to a correct time slot, and determines it to be proven that the device is in possession of the correct one-time signing key when the checks are fulfilled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.