Challenge/response system
US10917250B2 · kind B2 · utility
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37Claims
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Key dates
| Filing date | May 16, 2017 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Jan 5, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A challenge/response system separates a physically unclonable function from the challenge/response. Bits in a challenge are used to qualify random data values. The random data values are permuted to generate a result. The result is used to encrypt a response that is sent in reply to the challenge. Additional permuting mechanisms may be used to further obfuscate the response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.