Encryption/decryption engine with secure modes for key decryption and key derivation
US8347112B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Feb 17, 2009 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Jun 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0894
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In at least some embodiments, an electronic device comprises a processor and an encryption/decryption (E/D) engine coupled to the processor via a bus. The E/D engine selectively operates in a first mode and a second mode. For the first mode, an E/D engine output is provided to the bus. For the second mode, the E/D engine output is not provided to the bus and is accessible only to the E/D engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.