geli - selecting cipher
kudzu at tenebras.com
Wed Jul 25 19:18:49 UTC 2012
On Wed, Jul 25, 2012 at 11:57 AM, Wojciech Puchar
<wojtek at wojtek.tensor.gdynia.pl> wrote:
> i need high speed disk encryption (many disks running in parallel, lots of
> I'm not cryptography expert, is CBC somehow "less secure", and if so is it
> really a problem?
XTS-AES is a standard devised specifically for disk encryption - it
supports operations on sectors that aren't divisible by the cipher
I personally would be fine with AES-CTR mode, since I don't see the
need to defend against the mythical "strong" adversary who can write
arbitrary bits to unused sectors and then ask to have them decrypted.
AES-CTR doesn't (by itself) have any integrity check.
AES-CBC is fine, but the ciphertext is larger than the plaintext.
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