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attestation: add SNP-based attestation for aws-sev-snp (#1916)

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* config: move AMD root key to global constant
* attestation: add SNP based attestation for aws
* Always enable SNP, regardless of attestation type.
* Make AWSNitroTPM default again

There exists a bug in AWS SNP implementation where sometimes
a host might not be able to produce valid SNP reports.
Since we have to wait for AWS to fix this we are merging SNP
attestation as opt-in feature.
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Otto Bittner 2023-06-21 14:19:55 +02:00 • committed by GitHub
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4
internal/attestation/aws/snp/snp.go
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@ -36,6 +36,10 @@ Thus, the hypervisor is still included in the trusted computing base.
This section explains abbreviations used in SNP implementation.
- Platform Security Processor (PSP)
- Certificate Revocation List (CRL)
- Attestation Key (AK)
- AMD Root Key (ARK)