General FAQs
No, it can be self-signed
Install the Windows Microsoft SDKs, it can be found in any of these folders. Version of Windows kits may vary: C:\Program Files (x86)\Windows Kits\8.0\bin\x64 or C:\Program Files (x86)\Windows Kits\8.0\bin\x32
You can make use of OpenSSL for Windows (http://gnuwin32.sourceforge.net/packages/openssl.htm). If you encounter “Unable to load config info from /usr/local/ssl/openssl.cnf” error you need to append -config "C:\Program Files (x86)\GnuWin32\share\openssl.cnf" to your openssl command, the path may vary depending on where your installed it.
Follow the payload serialization rules. Provide a copy of your public certificate, it needs to be installed first in our server.
You would need to build the JSON string manually and handle the float value