Electronic device including a digital circuit for accessing encrypted data in a memory and corresponding method to access encrypted data in a memory
US11023566B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 3, 2018 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Feb 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes: a non-volatile memory configured to store data including encrypted data; and a digital circuit. The digital circuit includes: a microprocessor configured to access the non-volatile memory and an internal memory; and a decryption circuit arranged on an interconnect network identifying an internal data path for exchanging the data between the non-volatile memory and the microprocessor, and connected to a memory controller of the non-volatile memory for receiving blocks of data from the non-volatile memory, the decryption circuit being configured to: perform a decryption on the fly of blocks of the data read from the non-volatile memory to obtain read decrypted data; generate first decryption masks corresponding to first blocks of data being read from the non-volatile memory at a given read address; and generate second decryption masks corresponding to second blocks of data to be read from the non-volatile memory at a next estimated read address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.