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Fix Intel EK certificate URLs on Linux #347

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merged 1 commit into from
Sep 8, 2023
Merged

Fix Intel EK certificate URLs on Linux #347

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21 changes: 16 additions & 5 deletions attest/wrapped_tpm20.go
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Original file line number Diff line number Diff line change
Expand Up @@ -212,13 +212,24 @@ func (t *wrappedTPM20) eks() ([]EK, error) {
if pub.RSAParameters == nil {
return nil, errors.New("ECC EK not yet supported")
}

i, err := t.info()
if err != nil {
return nil, fmt.Errorf("Retrieving TPM info failed: %v", err)
}
ekPub := &rsa.PublicKey{
E: int(pub.RSAParameters.Exponent()),
N: pub.RSAParameters.Modulus(),
}
var certificateURL string
if i.Manufacturer.String() == manufacturerIntel {
certificateURL = intelEKURL(ekPub)
}
return []EK{
{
Public: &rsa.PublicKey{
E: int(pub.RSAParameters.Exponent()),
N: pub.RSAParameters.Modulus(),
},
handle: commonRSAEkEquivalentHandle,
Public: ekPub,
CertificateURL: certificateURL,
handle: commonRSAEkEquivalentHandle,
},
}, nil
}
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