TALUS: Reinforcing TEE Confidentiality with Cryptographic Coprocessors (Technical Report). (arXiv:2306.03643v1 [cs.CR])

Platforms are nowadays typically equipped with tristed execution environments
(TEES), such as Intel SGX and ARM TrustZone. However, recent microarchitectural
attacks on TEEs repeatedly broke their confidentiality guarantees, including
the leakage of long-term cryptographic secrets. These systems are typically
also equipped with a cryptographic coprocessor, such as a TPM or Google Titan.
These coprocessors offer a unique set of security features focused on
safeguarding cryptographic secrets. Still, despite their simultaneous
availability, the integration between these technologies is practically
nonexistent, which …

arm attacks confidentiality coprocessor environments intel platforms report secrets sgx systems technical tpm