Updated: January 2025
Current command:
hf iclass calcnewkey --help
Calculate new keys for updating (blocks 3 & 4) usage: hf iclass calcnewkey [--elite] options: -h, --help This help --old <hex> Specify key as 8 hex bytes --oki <dec> Old key index to select key from memory 'hf iclass managekeys' --new <hex> Specify key as 8 hex bytes --nki <dec> New key index to select key from memory 'hf iclass managekeys' --csn <hex> Specify a Card Serial Number (CSN) to diversify the key (if omitted will attempt to read a CSN) --elite Elite computations applied to new key --elite2 Elite computations applied to both old and new key --oldelite Elite computations applied only to old key examples/notes: hf iclass calcnewkey --old 1122334455667788 --new 2233445566778899 --csn deadbeafdeadbeaf --elite2 -> e key to e key given csn hf iclass calcnewkey --old 1122334455667788 --new 2233445566778899 --elite -> std key to e key read csn hf iclass calcnewkey --old 1122334455667788 --new 2233445566778899 -> std to std read csn