Applying circuit delay-based physically unclonable functions (PUFs) for masking operation of memory-based PUFs to resist invasive and clone attacks
US9787480B2 · kind B2 · utility
16Cited by
2References
31Claims
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Key dates
| Filing date | Aug 23, 2013 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Feb 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0884
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
One feature pertains to generating a unique identifier for an electronic device by combining static random access memory (SRAM) PUFs and circuit delay based PUFs (e.g., ring oscillator (RO) PUFs, arbiter PUFs, etc.). The circuit delay based PUFs may be used to conceal either a challenge to, and/or response from, the SRAM PUFs, thereby inhibiting an attacker from being able to clone a memory device's response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.