Subject: Re: cgd: CBC or no CBC
To: Florian Stoehr <netbsd@wolfnode.de>
From: Thor Lancelot Simon <tls@rek.tjls.com>
List: netbsd-users
Date: 01/21/2005 14:21:51
On Fri, Jan 21, 2005 at 08:19:40PM +0100, Florian Stoehr wrote:
> Hi,
> 
> in NetBSD guide: "All three ciphers are used in CBC mode. This means each 
> block is XORed with the previous encrypted block before encryption.".
> 
> Is this correct?
> 
> I'm not native English, so the original author's text is not easy to 
> unserstand for me. As far as I understand, the text says that each block 
> is encrypted SEPARATELY from any other block - with a different IV each, 
> IV is the encrypted block number encrypted with the same key used for the 
> data.

You have "cipher block" and "disk block" confused.

Thor