Block encryption security for integrated microcontroller and external memory system
US9773431B2 · kind B2 · utility
0Cited by
5References
22Claims
0Family size
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Key dates
| Filing date | Nov 10, 2009 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Jun 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/127
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A secure microcontroller system comprising an integrated cache sub-system, crypto-engine, buffer sub-system and external memory is described according to various embodiments of the invention. The secure microcontroller incorporates block encryption methods to ensure that content communicated between the integrated microcontroller and external memory is protected and real-time performance of the system is maintained. Additionally, the microcontroller system provides a user-configurable memory write policy in which memory write protocols may be selected to balance data coherency and system performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.