Re: Fixing the secret keys, and a small apology

"Michael Young" <mwy-opgp97@the-youngs.org> Wed, 05 September 2001 16:05 UTC

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From: Michael Young <mwy-opgp97@the-youngs.org>
To: ietf-openpgp@imc.org
References: <p05100309b7baf2e20a43@[192.168.1.180]> <tgae09ztfo.fsf@mercury.rus.uni-stuttgart.de>
Subject: Re: Fixing the secret keys, and a small apology
Date: Wed, 05 Sep 2001 11:48:44 -0400
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From: "Florian Weimer" <Florian.Weimer@RUS.Uni-Stuttgart.DE>
> Jon Callas <jon@callas.org> writes:
> > there, then they can't use algorithm 254. However, not only is using a
> > cipher algorithm deprecated, but our present max cipher number is 10.
> 
> This is not quite correct, the numbers 100 to 110 are already
> assigned, too, technically speaking.  However, 254 was never an

But, as Jon pointed out, any use of a cipher algorithm number
here is deprecated.  In fact, the String-to-Key section has
the following commentary already.  Note the explicit mention of IDEA.

[2440bis-03, section 3.7.2.1]:
>    This last possibility, the cipher algorithm number with an implicit
>    use of MD5 and IDEA, is provided for backward compatibility; it MAY
>    be understood, but SHOULD NOT be generated, and is deprecated.

I'd be perfectly happy strengthening this to "MUST NOT be generated
for algorithms outside the ranges 1-10 and 100-110" (or just IDEA).

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