The US doesn't use these modules, they have more evil and less usable concepts.
I don't have SAT myself, but DVB-C with encrypted channels, which should be the same CAM/CI concept (I hope?)
From what I know, you need to support the CAMs in every specific DVB-S/C tuner card though, as there is no central standard to use, so its quite a bit messy (for example, TBS linked above have their own SDK to work with, and so do other vendors)
First step would be investigating first which devices are the most popular and are even worth supporting.