Jeff, the keying algorithm is not well defined if the key length is not at 
least 1 byte. If you look at the code, there's a "% keylength" operation.

--------------------------------------------------
From: "Jeffrey Walton" <[EMAIL PROTECTED]>
Sent: Monday, December 03, 2007 12:45 AM
To: "Crypto++" <[EMAIL PROTECTED]>
Subject: Blowfish Minimum Key Size

>
> Hi All/Wei,
>
> Blowfish is reporting its minimum key size is 1 byte. From [1],
> Schneier appears to imply it can be from 0 to 447 bits: "the key can
> be any length up to 448 bits".. I take this to be [0,448).
>
> Jeff
>
> [1] http://www.schneier.com/paper-blowfish-fse.html
>
> > 


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