Integrated circuit configured to perform symmetric encryption operations with secret key protection
US11698993B2 · kind B2 · utility
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8References
12Claims
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Key dates
| Filing date | Jan 28, 2021 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | Apr 15, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2113
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A unique hardware key is recorded a secure hardware environment. A first logic circuit of the secure hardware environment is configured to generate a unique derived key from said unique hardware key and at least one piece of information. The at least one piece of information relates to one or more of an execution context and a use of a secret key. The secure hardware environment further includes a first encryption device that performs a symmetric encryption of the secret key using the unique derived key. This symmetric encryption generates an encrypted secret key for use outside of the secure hardware environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.