[dm-crypt] Non-standard cipher mode

FLD fld at r00t3d.com
Wed Dec 18 12:45:39 CET 2013

I accidentally created a luks container using option --cipher
aes-xts-plain64:sha512. Everything seems to be working correctly and
luksDump shows: "Cipher mode:    xts-plain64:sha512". I wonder if I
should hexedit the header manually and replace the ":sha512" part with
nulls since the proper format would be just "xts-plain64" since the
cipher does not need a hash for the ESSIV?

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