Dynamic scan obfuscation for integrated circuit protections
US12072379B2 · kind B2 · utility
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6References
20Claims
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Key dates
| Filing date | Mar 14, 2022 |
| Grant date | Aug 27, 2024 |
| Priority date | — |
| Expiry date | Nov 2, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/83
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integrated circuit (IC) protection circuit can include a reconfigurable block that receives a seed value from a tamper-proof memory and generates a dynamic key; an authentication block that receives the dynamic key from the reconfigurable block and taint bits from a scan chain to generate an authentication signature; and an encryptor that encrypts a test pattern response on the scan chain if a mismatch is found between the authentication signature and a test pattern embedded signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.