Current command:
lf em 4x70 auth --help
Authenticate against an EM4x70 by sending random number (RN) and F(RN) If F(RN) is incorrect based on the tag key, the tag will not respond If F(RN) is correct based on the tag key, the tag will give a 20-bit response usage: lf em 4x70 auth [-h] [--par] --rnd <hex> --frn <hex> options: -h, --help This help --par Add parity bit when sending commands --rnd <hex> Random 56-bit --frn <hex> F(RN) 28-bit as 4 hex bytes examples/notes: lf em 4x70 auth --rnd 45F54ADA252AAC --frn 4866BB70 -> (using pm3 test key) lf em 4x70 auth --rnd 3FFE1FB6CC513F --frn F355F1A0 -> (using research paper key)