Methods and systems for determining the authenticity of a component
US12236436B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2022 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Jul 28, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for determining the authenticity of a component in an electronic device, the method comprising: receiving a seed by a component in the electronic device; storing the seed in a block of non-volatile memory in the component; calculating, by the component, the output of a cryptographic function with the input based on the seed and storing the output in the block of non-volatile memory; iteratively calculating, by the component, the outputs of the cryptographic function wherein for each iteration the input for the cryptographic function is based on the seed and all previous outputs, and for each iteration storing the output in the block of non-volatile memory; and determining the authenticity of the component based on a selected output of the cryptographic function F, the selected output being one of the outputs stored in the block of non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.