[Feature request] Verify PDF certificate signature

[maxi322]

The tool lets you create signatures with certificates but there is currently no way to verify them.

An elegant solution would be to include such a functionality within the reader.

[sbplat]

If you're referring to checking if the certificate is trusted or not, then it wouldn't be possible since some certificates are self signed. Everything else should definitely be achievable though.

[maxi322]

True, but an option would be to include an optional custom trust store file like a NSS certificate database. When this is not included it could use the mozilla one for example and only verify official certificates.