What is an AES key, and what do I do with it?

[kermeet]

Hi. I have a patched Technosat 6000+, and managed to update some of its keys manually, from the parental control menu. No problem there.

I came across one AES key, the first half of which needs to go to position $03, and the second half to $13. I am out of luck, because I can only patch keys $08 to $0E. Is there anything that I can do with it?

I know what an AES key is, but why do providers use one? Is it different from other keys?

Thanks for your help.