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Re: [Cryptography] Size of the PGP userbase?

daemon@ATHENA.MIT.EDU (ianG)
Sat Dec 14 02:01:42 2013

X-Original-To: cryptography@metzdowd.com
Date: Sat, 14 Dec 2013 09:56:12 +0300
From: ianG <iang@iang.org>
To: Jon Callas <jon@callas.org>
In-Reply-To: <2846A96A-5D83-4F28-8E20-25C3D2617ABA@callas.org>
Cc: Cryptography Mailing List <cryptography@metzdowd.com>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com

On 13/12/13 21:27 PM, Jon Callas wrote:
>> I suspect you might be better off counting messages encrypted rather than users.  Anyone got an angle into a message tracking service?
>
> The stats on my server show that about 1.5% to 2% are encrypted/signed messages. Of that, about 85% are decryption/verify events. My results are obviously going to be more than the population at-large because I'm running an encryption server, but anecdotally, almost all of those are OpenPGP or S/MIME signature verifications.


Aha!  So you could measure the ratio of PGP to S/MIME usage by message 
from that.  You could also count the number of distinct users for each 
population.

As a proxy for PGP population, if you have the S/MIME population 
estimate from somewhere, multiple that with the ratio, and you have an 
estimate.  Standard marketing calculations...

iang

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