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Re: [openpgp] mailing list: managing the subscriber list

Werner Koch <wk@gnupg.org> Tue, 12 January 2016 07:22 UTC

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From: Werner Koch <wk@gnupg.org>
To: "Neal H. Walfield" <neal@walfield.org>
References: <87ziwd3yrn.wl-neal@walfield.org> <56938B98.7000707@openfortress.nl> <87r3hn4tw2.wl-neal@walfield.org>
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Date: Tue, 12 Jan 2016 08:19:50 +0100
In-Reply-To: <87r3hn4tw2.wl-neal@walfield.org> (Neal H. Walfield's message of "Mon, 11 Jan 2016 23:46:05 +0100")
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Cc: Rick van Rein <rick@openfortress.nl>, Matthew Green <matthewdgreen@gmail.com>, openpgp@ietf.org
Subject: Re: [openpgp] mailing list: managing the subscriber list
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On Mon, 11 Jan 2016 23:46, neal@walfield.org said:

> There are two types of re-encryption that I think are inappropriate:
>
>   - when the mailing list software decrypts and reencrypts each
>     message before forwarding it on to the list of subscriber, and,

As soon as you are in the need for a mailing list you have severe opsec
problems which I consider not solvable: You not only need to fully trust
all participants but also need to make sure that _all_ their boxes are
properly secured against attacks.

Adding another box to reencrypt the messages does not change the picture
much more than adding another subscriber.

I heard that Schleuder (schleuder.nadir.org or apt-get install schleuder)
is a matured tool for encrypted group communication.


Shalom-Salam,

   Werner

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