Methods and systems for determining the authenticity of a component
US11989737B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2021 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | Apr 30, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for determining the authenticity of an item, the method comprising: receiving, by an item, a seed; storing the seed in a block of non-volatile memory in the supply item follower component; calculating, by the item follower component, an 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 item, 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 item based on a selected output of the cryptographic function of the item, 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.