N3 and Seca card need get BK&RSA

[losuse]

i have Nagra 3 orignal box with paired card together, already to obtain a dump of flash, but i not know how to get extract Box sky and Rsakey, who can help me? other seca 2(Mediaguard) 100:0001e3 canalsat also can get box sky and rsa key like Nagra 3? plz only PM to me and moeny to you, thanks.