Re: On email and web security

"John Levine" <johnl@taugh.com> Sat, 02 January 2016 15:38 UTC

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Date: Sat, 02 Jan 2016 15:38:04 -0000
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From: John Levine <johnl@taugh.com>
To: ietf@ietf.org
Subject: Re: On email and web security
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>To send to a mailing list, the sender must either have a copy of the list or the system managing the list must decrypt and re-encrypt the
>message.  Neither of these is a good fit with the current email architecture.  The former is secure but unwieldy; the latter is reasonably
>efficient but breaks the desired end-to-end security.

FYI, the Sympa list manager which is widely used in Europe does the
latter, S/MIME key for the list, and the list software re-encrypts the
messages to the recipients' keys.

Given a choice between trusting the list software and trusting all of
the subscribers, that seems a reasonable way to do it.

R's,
John