Hi,
I read somewhere that a new official version of BC for C# is imminent. So I just hat a glance on the implementation of CMP under src\asn1\cmp.
I was told there were a few errors in older Java versions of BC that have been fixed very recently. It appears that those errors are still in the C# version available on github. For instance, PollRepContent should be a SEQUENCE OF SEQUENCE, but in the coding it appears that it is just a simple SEQUENCE.
Currently I'm using CMP of the C# lib for reference in my development plans, so in case you could confirm that, it would be great to have this updated.
Best regards, Torsten Moschny