Determining an aspect of behavior of an embedded device such as, for example, detecting unauthorized modifications of the code and/or behavior of an embedded device
US10783248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2018 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Aug 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/554
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The goal of detecting modifications, such as unauthorized modifications for example, of the code and/or behavior of an embedded device (e.g., unexpected/unauthorized remote reprogramming, re-flashing), changes to code at run-time (e.g., code injection, software parameter changes due to run-time reconfiguration commands), execution of unauthorized code, activation of hardware Trojans, and other attacks on the hardware and/or software of embedded devices (or more generally, for determining an aspect of behavior of an embedded device and/or an embedded system) is solved by (1) injecting at least one of (A) code and/or (B) inputs into the embedded system to cause the embedded system, when functioning as desired, to exhibit an identifiable baseline behavior determined from a sequence of patterns (also referred to as “fiduciary markers”) in observable side channel emissions of the embedded system; (2) measuring side channel emissions generated by the embedded system when the at least one of (A) code and/or (B) inputs is injected; (3) extracting features from the measured side channel emissions; and (4) determining the aspect of the behavior of the embedded system by analyzing the extract…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.