Method and apparatus for perfect forward secrecy using deterministic hierarchy
US10574451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Aug 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for a system to communicate via perfect forward secrecy. A deterministic hierarchy is used to generate public and private keys, offline, on distinct devices, for use with asymmetrical cryptography over an unsecure medium. Because each private key is not transmitted over the unsecure medium, but must be used to de-encrypt the communications, it is very difficult for man-in-the-middle attacks to de-encrypt the communications. Because each private key is generated according to a deterministic hierarchy, a master entity can recreate the private keys and passively monitor the communications while maintaining perfect forward secrecy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.