With the default RHEL 6 installer, how can I choose the LUKS encryption?
Afaik if I prepare the disk like
cryptsetup luksFormat -c cast5-cbc-plain -s 128 /dev/$DEVICE
could be the "fastest" encryption, but the installer only prompts for password, then later, at the partitioning it recognizes it as "unknown" partition.
UPDATE: so in short, I just want to speed up io with using the mentioned faster encryption (? are there faster/but still ""secure""?) with the default install. How can I don it?
UPDATE#2: what would be the fastest encryption that can be still used in the default GUI install??