[12502] in cryptography@c2.net mail archive
Re: Columbia crypto box
daemon@ATHENA.MIT.EDU (Bill Frantz)
Mon Feb 10 20:09:50 2003
X-Original-To: cryptography@wasabisystems.com
X-Original-To: cryptography@wasabisystems.com
In-Reply-To: <20030211002927.29B227B4D@berkshire.research.att.com>
Date: Mon, 10 Feb 2003 16:55:44 -0800
To: "Steven M. Bellovin" <smb@research.att.com>
From: Bill Frantz <frantz@pwpconsult.com>
Cc: cryptography@wasabisystems.com
At 4:29 PM -0800 2/10/03, Steven M. Bellovin wrote:
>In message <v03110705ba6dec92ddb0@[192.168.1.5]>, Bill Frantz writes:
>
>> * Fast key setup (Forget tossing the 256 bytes of key stream.
>> The designers weren't crypto engineers. Personally, I'd toss the
>> first 1024.)
>
>...
>
>There may be a cryptographically sound reason to discard that much, but
>it's not without cost.
The reason I would discard so much is that when I did some statistics on
RC4 output, I kept getting distribution lumps out to about 1024. They made
me worry about what someone who knew what were doing could do.
Cheers - Bill
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