From: Phil Karn <karn@qualcomm.com>
Date: Tue, 14 Nov 1995 05:48:20 +0800
To: bal@martigny.ai.mit.edu
Subject: Re: Photuris Primality verification needed
In-Reply-To: <199511081704.JAA07274@qualcomm.com>
Message-ID: <199511090337.TAA04357@servo.qualcomm.com>
MIME-Version: 1.0
Content-Type: text/plain


>I don't know.  Maybe the right thing to do is require conforming
>implementations to support a large modulus but include recommended
>smaller moduli.  Then Alice can always force Bob to use the large
>modulus but, if both agree, they can use something smaller from the
>standard or even their own home-grown modulus.

Thanks. That's pretty much what we are doing -- requiring a particular
1024-bit modulus but recommending several others as options. There's a
2048 bit optional modulus and may even be a 4096-bit option if I can
find one in reasonable time. There was going to be a 512-bit optional
modulus but the group has reacted so strongly to it that I'm willing to
withdraw it.

Phil