Open syjwg opened 1 year ago
Just saw that this has been reported previously in https://github.com/lovele0107/signatures-conformance-checker/issues/5 but now you will have an uploaded PDF to check.
Dear syjwg,
First of all, thank you very much indeed for using PAdESCC and your valuable comment.
As far as I am aware, ISO 32000-2, specifies, I I have correctly understood, that this attribute may not be used when the Subfilter value is ETSI.CAdES.detached. In ETSI EN 319 142-1, clause 6.3, additional requirement l specifies:
l) The Signature Dictionary shall contain a value of ETSI.CAdES.detached for the key SubFilter
This means that the PAdESCC, being a conformance checker of PAdES signature initially sticks to what is specified and required by the ETSI EN. In addition, ISO 32000-2 bans the usage of the attribute that you mention.
A couple of additional comments:
Best regards Juan Carlos
Only way to get Adobe Reader to successfully show information about a Long Term Validation (LTV) signature is to include a signed pdfRevocationInfoArchival (OID 1.2.840.113583.1.1.8) attribut. The validator will however show a Warning when this is included and our customers are not happy with that.
Adobe Reader will show "Signature is LTV enabled" for the attached file. signed-and-ltv-enabled.pdf