This forum is dedicated to discussions pertaining specifically to the Motorola ASTRO line of radios (those that use VSELP/IMBE/AMBE), including using digital modulation, digital programming, FlashPort upgrades, etc. If you have general questions please use the General or Programming forums.
The SSE5000 is, apparently, an XTS5000 in a modified case. Therefore, I would expect that it uses the same UCMs, and thus can use any sort of crypto that the XTS5 can use.