ckey refers to encrypted private key, where you need
mkey and the password to decrypt
ckey[1]. There are many software which can decrypt/crack wallet.dat, but i'm not aware of any software which only ask for
ckey and
mkey data though.
FYI, Bitcoin Core doesn't use deterministic wallet in 2009 or even until mid 2016.
Middle 2016 is the correct date. To be specific, Bitcoin Core starts to use deterministic/HD wallet since Bitcoin Core 0.13.0[2].
[1]
https://bitcoin.stackexchange.com/a/115049[2]
https://bitcoincore.org/en/releases/0.13.0/