I'm from Nepal (Land of Mt. Everest & Lord Buddha)

I work in a movie distribution company here, Till today we used to make DCPs
using open dcp (without encryption).
From now we are planning to make encrypted DCPs.
Recently i have started using this lovely piece of software (DCP-O-matic) and looks great to make unencrypted DCPs.
But haven't tested with encrypted one.
...........
Few days ago i found some Indian technician here, who were suggesting me to buy some USB dongle (they said something like ilock)
They told that the KDM generated through DCP-O-matic without plugging it in computer will not work in most cinema servers.
Is the KDM creator free? Will the KDM generated using encrypted CPl and .pem certificates works without anything else?