I’ve been reviewing the attestation SDKs and documentation for Intel TDX, AMD SEV-SNP, and AWS Nitro Enclaves as part of a compliance mapping exercise. Something keeps bothering me, and I wanted to see if anyone else has this concern.

When we rely on a vendor-provided SDK to verify attestation reports from these TEEs, we’re essentially trusting a black box. The SDK is a compiled binary library. How do we *know* it’s performing the verification checks correctly? For regulated workloads under GDPR or HIPAA, our audit trail needs to show *how* we verified the integrity and isolation of the environment. Pointing to a proprietary binary feels like a weak link.

My worry is this: without reproducible builds of these attestation libraries—where we can compile the source ourselves and get the exact same hash as the distributed binary—we cannot truly audit the verification process. We have to take the vendor’s word for it. That seems to conflict with the principle of “trust but verify” that’s central to a lot of compliance frameworks.

Has anyone run into this in a formal audit? Did auditors accept the use of the vendor’s pre-compiled SDK as sufficient control? Or did they flag it as a lack of transparency? I’m trying to gauge the real-world regulatory risk here, especially for agent workloads that handle personal data.

- Connie