DM500, softcam.key and encrypted channels

I have just bought a dreambox 500 s and I want to know how to open encrypted channels without internet
What is the softcam.key and how to make it work?
I have download softcam.key to my DM at /var/keys also a punch of key files (biss_key, irdeto,…)

I have collected those information from my box
DM 500-s
CCCam 2.1.4
Enigma 1
Gimini 470

My windows is XP
Please help me and give me some examples of the channels I can see

AW: DM500, softcam.key and encrypted channels

You can share your cards with other guys with this parts but dont encryped channels with softcam....on Astra