No need key, only:
1) download the correct version according to your box
2) rename it with the same name of your oscam present on /usr/bin
3) stop running oscam
4) overwrite the oscam file on /usr/bin
5) start oscam and... done
hidra-oscam-svn9872-mipsoe20-webif.zip
hidra-oscam-svn9872-mips-webif.zip
hidra-oscam-svn9872-ppc-webif.zip
hidra-oscam-svn9872-sh_4-webif.zip
hidra-oscam-svn9872-arm_cortex_a9-webif.zip
hidra-oscam-svn9872-mipsoe20-webif-libusb.zip
hidra-oscam-svn9872-mipsel-webif-libusb.zip
hidra-oscam-svn9872-powerpc-webif-libusb.zip
hidra-oscam-svn9872-sh_4-webif-libusb.zip
hidra-oscam-svn9872-arm_cortex_a9-webif-libusb.zip
https://www.zipshare.com/download/eyJhcmNoaXZlSWQiOiI1ZGU2NTE3MC04MjhhLTRmZWQtYjZhNy1hNDA2ZjNlNjAzZTIiLCJlbWFpbCI6Im5hcHVsZTg5QGdtYWlsLmNvbSJ9