REST API on HTTPS and RFID reader in same setup

Impossible ?

I am trying to reach out to a server with a SSL certificate via a REST API. I need to send some data from a RFID chip to the server, so they need to work togehter.

I have a Genuino MEGA 2560 board with a HanRun Ethernet shield and a RFID-RC522 Chip reader.

When i try to run Chris Continanza's RestClient (csquared) i can't get a connection (propably the HTTPS that blocks it).

How would you solve this matter ?

I have read that the Yün board can do it, but i am uncertain.