Current command:
hf mfdes changekey --help
Change PICC/Application key. Needs to provide keynum/key for a valid authentication (may get from default parameters). usage: hf mfdes changekey [-hav] [-n <dec>] [-t <DES|2TDEA|3TDEA|AES>] [-k <hex>] [--kdf <none|AN10922|gallagher>] options: -h, --help This help -a, --apdu Show APDU requests and responses -v, --verbose Verbose output -n, --keyno <dec> Key number -t, --algo <DES|2TDEA|3TDEA|AES> Crypt algo -k, --key <hex> Key for authenticate (HEX 8(DES), 16(2TDEA or AES) or 24(3TDEA) bytes) --kdf <none|AN10922|gallagher> Key Derivation Function (KDF) -i, --kdfi <hex> KDF input (1-31 hex bytes) -m, --cmode <plain|mac|encrypt> Communicaton mode -c, --ccset <native|niso|iso> Communicaton command set --schann <d40|ev1|ev2|lrp> Secure channel --aid <hex> Application ID of application (3 hex bytes, big endian) --isoid <hex> Application ISO ID (ISO DF ID) (2 hex bytes, big endian). --oldalgo <DES|2TDEA|3TDEA|AES> Old key crypto algorithm --oldkey <old key> Old key (HEX 8(DES), 16(2TDEA or AES) or 24(3TDEA) bytes) --newkeyno <dec> Key number for change --newalgo <DES|2TDEA|3TDEA|AES> New key crypto algorithm --newkey <hex> New key (HEX 8(DES), 16(2TDEA or AES) or 24(3TDEA) bytes) --newver <hex> Version of new key (1 hex byte) examples/notes: Change crypto algorithm for PICC key is possible, but for APP keys crypto algorithm is set by createapp command and can't be changed wo application delete