man cryptsetup
Quote:
cryptsetup is used to conveniently setup dm-crypt managed device-mapper
mappings. These include plain dm-crypt volumes and LUKS volumes. The
difference is that LUKS uses a metadata header and can hence offer more
features than plain dm-crypt. On the other hand, the header is visible
and vulnerable to damage.
In addition, cryptsetup provides limited support for the use of loop-
AES volumes and for TrueCrypt compatible volumes.
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A passphrase that you can remember is either too short, too simple or too easily forgotten.
A file that you keep on your computer is either too simple to find or too simply destroyed, as you keep forgetting what it was doing.
The most embarrassing thing is probably the word “better”.
The rest is in the documents.
