Control circuitry for data security apparatus
US12380813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2023 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | May 24, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data security apparatus has an analog component and control circuitry. The control circuitry receives an incoming digital message and converts it to or from encrypted form using the analog component. The control circuitry drives the analog component with drive signals and receives back a digital representation of what the analog component's sensor outputs. It uses this in making a digital keystream. In operation, the control circuitry makes the drive signals by encrypting a nonce-based value with a key. It can encrypt the digital representation of the sensor outputs that resulted from the drive signal, with the same key. The control circuitry also can also encrypt the nonce-based value with a different key, and then combine this with the encrypted sensor output to generate the digital keystream that is uses in the conversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.