SPEAR-V: Secure and Practical Enclave Architecture for RISC-V
David Schrammel, Moritz Waser, Lukas Lamster, Martin Unterguggenberger, Stefan Mangard · 2023
Trusted Execution Environments (TEEs) and enclaves have become increasingly popular and are used from embedded devices to cloud servers. Today, many enclave architectures exist for different ISAs. However, some suffer from performance issues and controlled-channel attacks, while others only support constrained use cases for embedded devices or impose unrealistic constraints on the software. Modern cloud applications require a more flexible architecture that is both secure against such attacks and not constrained by, e.g., a limited number of physical memory ranges.