Converting AFL Amibroker to DLL

I want to convert AFL code of Amibroker to DLL plugin to hide original formula, and also to protect the DLL and binding it to single machine. we want to wrap the DLL with security, or license ,then it will have expiry date, this expiry date then can be set to 30 days, 90 days,etc, and this expiry date then can be extended through entering unique serial number. The result should be an executable file. if it run, can automatically install the DLL plugin to Amibroker directory. the default expiry date can be set (e.g 15 days) , and can be extended through entering code. The freelancer should have deep / sound knowledge on both AFL and C++