How to "Verify the AWS Signature" #24735
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This is an automated process done by the service (like KMS).
The attestation document from the enclave comes with a digital signature from the Nitro Hypervisor.
KMS has a copy of AWS's public certificate (like a public master key that everyone can trust).
KMS uses this public certificate to mathematically verify that the signature on the document is genuine. This proves two things:
The document was created by a real AWS Nitro Hypervisor.
The document was not tampered with after it was signed.