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attestation: print pcr value of mismatch

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Signed-off-by: Paul Meyer <49727155+katexochen@users.noreply.github.com>
This commit is contained in:
Paul Meyer 2023-08-04 14:26:05 +02:00
parent 70861ee8ad
commit 5dfa0520ce
1 changed files with 10 additions and 2 deletions
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12
internal/attestation/vtpm/attestation.go
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@ -222,9 +222,17 @@ func (v *Validator) Validate(ctx context.Context, attDocRaw []byte, nonce []byte
for idx, pcr := range v.expected { for idx, pcr := range v.expected {
if !bytes.Equal(pcr.Expected[:], attDoc.Attestation.Quotes[quoteIdx].Pcrs.Pcrs[idx]) { if !bytes.Equal(pcr.Expected[:], attDoc.Attestation.Quotes[quoteIdx].Pcrs.Pcrs[idx]) {
if pcr.ValidationOpt == measurements.Enforce { if pcr.ValidationOpt == measurements.Enforce {
return nil, fmt.Errorf("untrusted PCR value at PCR index %d", idx) return nil, fmt.Errorf(
"untrusted PCR value %x at index %d",
attDoc.Attestation.Quotes[quoteIdx].Pcrs.Pcrs[idx],
idx,
)
} }
v.log.Warnf("Encountered untrusted PCR value at index %d", idx) v.log.Warnf(
"Encountered untrusted PCR value %x at index %d",
attDoc.Attestation.Quotes[quoteIdx].Pcrs.Pcrs[idx],
idx,
)
} }
} }