Updated: January 2025
Current command:
hf mf decrypt --help
Decrypt Crypto-1 encrypted bytes given some known state of crypto. See tracelog to gather needed values usage: hf mf decrypt [-h] --nt <hex> --ar <hex> --at <hex> -d <hex> options: -h, --help This help --nt <hex> tag nonce --ar <hex> ar_enc, encrypted reader response --at <hex> at_enc, encrypted tag response -d, --data <hex> encrypted data, taken directly after at_enc and forward examples/notes: hf mf decrypt --nt b830049b --ar 9248314a --at 9280e203 -d 41e586f9 -> 41e586f9 becomes 3003999-> 41e586f9 becomes 3003999a -> which annotates 30 03 [99 9a] read block 3 [crc-> which annotates 30 03 [99 9a] read block 3 [crc]