[DCP-o-matic] Supplementals for signed unecnrypted DCP

I ask for your experience on this. I never fully understood the signing thing. Can I create a supplemental for a signed unencrypted DCP that I didn't create? I always thought that it's not possible, as I don't have the adequate certificates. I heard that an unsigned Interop supplemental may work, even with encrypted material on the new CPL. A couple tests with DOM failed, but I'm not really sure if it was something else. Thanks! Manuel AC -- http://akadcp.com/ https://www.facebook.com/akadcp