LUKS (Linux Unified Key Setup) is a disk-encryption specification.

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TrueCrypt LUKS keyfile and password

I understand that a TrueCrypt volume may be encrypted with a password AND a keyfile. As far as I can tell, A LUKS volume may use EITHER a password OR a keyfile, but not both simultaneously for ...
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Would using an interation count greater than 1 with a random keyfile of length greater than the master key be of any benefit?

If I were to have a 4096-bit file of random data (/dev/random) used as a keyfile for LUKS, would there be any benefit to having a key iteration count higher than 1? My reasoning is that the attacker ...