Patent · US Active

Clone application detection mechanism for securing trusted execution environments against a malicious operating system

US11836244B2 · kind B2 · utility

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0References

15Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Samira Briongos · Heidelberg, DE
Claudio Soriente · Madrid, ES
Ghassan Karame · Heidelberg, DE

Key dates

Filing date	Jun 2, 2021
Grant date	Dec 5, 2023
Priority date	—
Expiry date	Jul 16, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/033
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for detecting a trusted execution environment (TEE) clone application operating on a computing device includes measuring a plurality of read time periods associated with a plurality of monitored cache sets within a memory cache based on executing a first auxiliary thread of a TEE application on the computing device. Each of the read time periods indicating a time period that is used to read data within one of the monitored cache sets. The read time periods are compared with a time threshold to determine one or more cache misses. The TEE clone application is detected as operating on the computing device based on the determined cache misses.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.