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I am looking for strong cipher for LUKS, currently I am thinking about SHA512, but encryption is not my cup of tea, so could you give me your hints, what are you using for encryption?

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SHA512 is rather too one-wayish for a crypto cipher... –  Hubert Kario Jan 8 '11 at 18:53
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What is your use case? What kind of data are you trying to protect, what are you trying to protect against, and are there any applicable legal/regulatory compliances involved? –  Scott Pack Jan 8 '11 at 19:26
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Ency, I don't know what country you are in, but in the US (and several others), a Court can order you to turn over your encryption keys and or passwords, and basically keep you in jail until you do. Just an FYI. –  BenGC Jan 8 '11 at 19:55
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@zoredache: Since he is most likely trying to commit crimes (i.e. obstruct legal investigations and court orders) we probably shouldn't help him there either. –  Scott Pack Jan 8 '11 at 20:35
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@packs: You and everyone else has a right on privacy (or are you from china or kldr?) and that's what i want to have, no one is able to see may data without may permission. –  Ency Jan 8 '11 at 21:29

1 Answer 1

up vote 6 down vote accepted

Go with the default unless you know what you're doing.

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I know what I am doing, I am just not so good in cryptography, that is why i am asking ... –  Ency Jan 8 '11 at 20:31
    
I believe the default for LUKS is AES-CBC with a 256 bit key size. This is a pretty good all around choice. As mentioned unless you know more about cryptography than the developers of LUKS, staying with the default is probably a good choice. –  kce Jan 8 '11 at 21:00
    
Cryptography is hard, really hard. The key strength, algorithm, use case, and cipher mode need to all fit together like a puzzle, or else the whole is weaker than the sum. Unless you have a strong understanding of all those parts, then the defaults are usually better. That being said, AES-CBC with a 256 bit key sounds reasonable from my understanding of them. –  Scott Pack Jan 9 '11 at 15:50

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