[dm-crypt] LUKS passphrase question

adam peterson <[email protected]>
Newsgroups de.saout.dm-crypt
Message-ID <[email protected]> 
Hello dm-crypt and LUKS team,

I have a simple question regarding a sentence I found on the Fedora wiki in their encryption section. Here's a the quote, "LUKS does provide passphrase strengthening but it is still a good idea to choose a good (meaning "difficult to guess") passphrase."

What is meant by passphrase strengthening exactly and how is it accomplished?

Thank you,
- Adam Peterson
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