Error reported by dcp_inspect

Anything and everything to do with DCP-o-matic.
Guddu
Posts: 159
Joined: Wed Oct 04, 2017 4:49 am

Error reported by dcp_inspect

Post by Guddu »

I am getting 2 errors when inspecting DCPs using dcp_inspect

Kindly let me know if these errors are to be ignored or something should/could be done to overcome them

Attached is the dcp_inspect log file and below is the relevant portion of the full text

Error: PKL 4b3656a7-5ca6-450f-b623-0703f65539dd: Signature ❌: Role title present in CommonName field of authority certificate ❌
Error: CPL 536d3248-2047-4aa0-8c33-11979925f91d: Signature ❌: Role title present in CommonName field of authority certificate ❌
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carl
Site Admin
Posts: 2976
Joined: Thu Nov 14, 2013 2:53 pm

Re: Error reported by dcp_inspect

Post by carl »

Looks like it doesn't like the CS in the common name of your intermediate certificate. Did you create a new certificate chain with DCP-o-matic?

Unfortunately I have no idea if this will cause playback problems or not...
Guddu
Posts: 159
Joined: Wed Oct 04, 2017 4:49 am

Re: Error reported by dcp_inspect

Post by Guddu »

This is what I have in my decryption intermediate certificate
subject=O=dcpomatic.com, OU=dcpomatic.com, CN=.dcpomatic.smpte-430-2.INTERMEDIATE, dnQualifier=udvSx9v2te506ZgZDcfSqJiXySU=

This is what I have in my signing intermediate certificate
subject=O=dcpomatic.com, OU=dcpomatic.com, CN=., dnQualifier=YTAkbSr1Cq01WlD4GxBozOimc3g=

Extracted using the following command for each certificate
openssl x509 -in <Certificate File> -noout -subject
Carsten
Posts: 3095
Joined: Tue Apr 15, 2014 9:11 pm
Location: Germany

Re: Error reported by dcp_inspect

Post by Carsten »

Backup your current preferences folder, including the cert chain.

Then recreate your cert chain in DCP-o-matic and create a new DCP. Check that DCP and see if your dcp_inspect warning returns.

The signing certificate is not relevant for decryption, you should be able to recreate it without issues.

At some time, dcp-o-matic created signing certificates with specific formal issues, that was corrected after a while. I have never heard about real playback issues with these certificates. After the issue was fixed in dcp-o-matic, subsequent releases of dcp-o-matic came up with a warning and offered to recreate the signing certificates. Don't know if you skipped that.
Guddu
Posts: 159
Joined: Wed Oct 04, 2017 4:49 am

Re: Error reported by dcp_inspect

Post by Guddu »

Thanks for the response Carsten. Yes. When I did an upgrade to a newer version it certainly offered to recreate the signing certificates which I always skipped as I did not want the existing DCPs etc or DKDMs to stop working. Now it is clear. Thanks again for the explanation.