Digital signature system based on a cloud of dedicated local devices
US11601284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2019 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Jan 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/002
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method and apparatus are disclosed for attack tolerant implementations of public key digital signatures based on a cloud of dedicated local devices. A system includes a first security device, a second security device, and a computing device remote from the first and second security devices. The first security device stores a first private key and, in response to receiving a message, generates a first signature based on a message received from the computing device and the first private key. The second security device stores a second private key that is independent from the first private key and, in response to receiving a message, generates a second signature based on a message received from the computing device and the first private key. The computing device generates a composite cryptographic signature based on the first signature and the second signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.