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List:       linux-crypto
Subject:    Re: some other questions
From:       Marc Mutz <Marc () Mutz ! com>
Date:       2001-12-13 15:24:30
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On Thursday 13 December 2001 14:59, Newsmail wrote:
> thx Marc, and Robert for your answers, could you tell me what the
> block size means?

Block ciphers do encryption and decryption on blocks of bit (hence the 
name). blowfish operates on 64bit-blocks, All AES candidates operate on 
128bit blocks.

> what is the difference between aes128 and aes256
> for exemple, is it related to the 'deepness' of encryption?

Here, 128/256 is the key length. You won't need 256, stay with 128.

> btw I have more than 3 gig to encrypt, if I encrypt than I encrypt
> everything :), so blowfish doesnt support more than 3 gigs lets say,

Well, blowfish happily encrypts arbitary volumes of data, but you have 
to limit the amount of data encrypted under a single key becuase else 
you can make it easier for attackers.

Consider partitioning your data in 2G chunks. Then encrypt each 
partition with another key. Voila - you're done.

> so Marc you recommend Serpent?
<snip>

As well as any other of the ones I mentioned.

> ps: if I want to use patch-int-2.4.16.2, do I have to install the hrv
> or jari loop pacthes or these are included in 2.4.16.2?
<snip>

Dunno. Check the archives for announcements.

Marc

- -- 
"Similia similibus currentur"
           -- Bush's new motto in fighting terrorism.
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-
Linux-crypto:  cryptography in and on the Linux system
Archive:       http://mail.nl.linux.org/linux-crypto/

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