From linux-crypto Thu Dec 13 15:24:30 2001 From: Marc Mutz Date: Thu, 13 Dec 2001 15:24:30 +0000 To: linux-crypto Subject: Re: some other questions X-MARC-Message: https://marc.info/?l=linux-crypto&m=100825690204308 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 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? 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? Dunno. Check the archives for announcements. Marc - -- "Similia similibus currentur" -- Bush's new motto in fighting terrorism. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE8GMgu3oWD+L2/6DgRAltbAJwJslLvNLcNdOtViZsSfnsr7eTPUwCfQ2e8 8oVqlcLMswqd+2ZR2ZoXk4s= =jewb -----END PGP SIGNATURE----- - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/