How to generate a Legacy sev attestation report

[dddjjjiie]

I first used the command query-sev-attestation-report to get the base64 encoding of the attestation report, and then I converted it to binary. Then, when I used the sevctl validate command to validate the report, an error message "Unexpected report size encountered" appeared. I would like to ask if there is any other way to generate an attestation report?

[dddjjjiie]

To solve the above problem, I first filled the file output.bin to 576 bytes, and then checked whether the function impl Verifiable for (&Certificate, &LegacyAttestationReport) in the sev.rs file first calculated the sha256 of the return value of measurable_bytes() and then verified the signature. In my sev.rs file, measurable_bytes() is directly used as a message to verify the signature, so even if the correct report is passed in, it will fail the verification.