PowerVu management keys has been hacked
(....Abstract
In my previous paper the "Cryptanalysis of PowerVu
television broadcast encryption" [1] I have
described how it was possible find out the ECM key that can decrypt the video & audio DES keys.
For this old hack a security chip was necessary that had
valid keys inside. A special hacking
hardware (for the old timing and the new key change interruption attack) was necessary also.
For the new hack the security chip isn't needed. A self build hacking hardware isn't needed too.
As hardware only a DVB-S2 card
and a graphic card that supports CUDA is needed.
To find some management keys it has taken me one day (GeForce GTX 470). A slower card need
more time.
It's a brute fore attack on the EMMs, but because of multiple security flaws in the PowerVu system
it isn't necessary to test the full 56 bit key space
to find a key....)
More info here
http://colibri.bplaced.net/powervu.htm
and
http://colibri.bplaced.net/PowerVu_management_keys_hacked.pdf
The same person who give us CSA-Rainbow-Table
Sorry if this is already posted