Re: [Cfrg] new authenticated encryption draft

"David A. McGrew" <david.a.mcgrew@mindspring.com> Tue, 29 August 2006 16:58 UTC

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From: "David A. McGrew" <david.a.mcgrew@mindspring.com>
Subject: Re: [Cfrg] new authenticated encryption draft
Date: Tue, 29 Aug 2006 09:58:43 -0700
To: Hal Finney <hal.finney@gmail.com>
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Hi Hal,

On Aug 29, 2006, at 9:51 AM, Hal Finney wrote:

> One sentence that struck me as kind of odd was this, in section 2.1:
> "The strength of the authentication of P, IV and A is attenuated by
> the length t of the authentication tag."
>
> Attenuation means a weakening or reduction, so this makes it sound
> like a longer tag will result in diminished security.

bad choice of words in the draft.  I like "determined by".

David

> Maybe you could
> substitute "controlled by" or "determined by", or even "exponential in
> the length t". A good algorithm ought to be exponential in t, I'd
> think, othewise it is being wasteful.
>
> Hal Finney
>
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