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Robert David Graham
2020-10-30 04:33:01 -04:00
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@@ -88,8 +88,9 @@ an authenticated user of that account.
### "Is it timestamped?"
The `Date:` field in the headers/metadata is included in the signature.
DKIM verifies the contents of that field, but not that it's the correct date.
Since the signing key changed a year later, we know the data was before 2016.
DKIM verifies the contents of that field (that somebody didn't alter after signing),
but not that it's the correct date.
Since the signing key changed a year later, we know the date was before 2016.
There are other timestamps in the email headers/metadata, but they aren't
validated by DKIM, and hence, could be forged.