Title
DExIE - An IoT-Class Hardware Monitor for Real-Time Fine-Grained Control-Flow Integrity
Abstract
The Dynamic Execution Integrity Engine (DExIE) is a lightweight hardware monitor that can be flexibly attached to many IoT-class processor pipelines. It is guaranteed to catch both inter- and intra-function illegal control flows in time to prevent any illegal instructions from touching memory. The performance impact of attaching DExIE to a core depends on the concrete pipeline structure. In some especially suitable cases, extending a processor with DExIE will have no performance penalty. DExIE is real-time capable, as it causes no or only up to 10.4 % additional and then predictable pipeline stalls. Depending on the monitored processor’s size and structure, DExIE is faster than software-based monitoring and often smaller than a separate guard processor. We present not just the hardware architecture, but also the automated programming flow, and discuss compact adaptable storage formats to hold fine-grained control flow information.
Year
DOI
Venue
2022
10.1007/s11265-021-01732-5
Journal of Signal Processing Systems
Keywords
DocType
Volume
IoT security, Runtime-dynamic integrity, Fine-grained control flow integrity, RISC-V, Code reuse attacks, Real time
Journal
94
Issue
ISSN
Citations 
7
1939-8018
0
PageRank 
References 
Authors
0.34
3
5
Name
Order
Citations
PageRank
Spang, Christoph100.34
Lavan, Yannick200.34
Hartmann, Marco300.34
Meisel, Florian400.34
Andreas Koch59415.13