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Subject: Re: keys
From: Marc Mutz <Marc,AT,Mutz,DOT,com>
Date: Fri, 17 Nov 2000 20:00:08 +0100
In-reply-to: <20001116153942.D27338@www.infotrans.sk>

Bohdan Spes wrote:
> 
> Hi,
> 
>         could you explain me usage of these keys ?
>    Key                 key_e, key_d, skey_e, rkey_d;
> I want implement only one key. Why 4. What does it mean ? Thanks for 
>answers.
<snip>

Blowfish creates key-dependant S-boxes and other things from the user
supplied key. This is called 'key expansion'. If you really want to hack
CIPE and to know what all those things mean, I'd recommend reading the
Blowfish paper at http://www.counterpane.com/blowfish.html

Marc

-- 
Marc Mutz <Marc,AT,Mutz,DOT,com>     http://EncryptionHOWTO.sourceforge.net/
University of Bielefeld, Dep. of Mathematics / Dep. of Physics

PGP-keyID's:   0xd46ce9ab (RSA), 0x7ae55b9e (DSS/DH)





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