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The problem is that we do sort of have a solution to this already, which
Werner described: use PGP/MIME. MIME allows for embedding one email
message inside another, and the MIME security extensions, including
PGP/MIME, show how to encrypt such an embedded message.
Well the way Werner describes it, he just advises not to use a Subject.
Simply send your mail as an encrypted message/rfc2822 MIME message and
put an innocent subject into the header.
The problem is that almost no mailers support this. Few enough even
support PGP/MIME, and then they would also have to be smart enough to
figure out what to do with an embedded email message. Replacing the
enclosing message's headers with those from the embedded message is not
an obvious thing to do.
So this would adhere to the standards, and allow to embed headers inside
the PGP encryption block ?
Could you by any means describe this in more detail ?
I would try to bring it to the attention of enigmail developers, maybe
they are interested in it.
They have Per-Recipient-Rules, so it would be possible to implement
that, and then specify it in these rules, so its only used for
recipients which are able to decrypt it. I do that with PGP/MIME to only
use it for thunderbird recipients, works fine.
I would really like to see this implemented, and I am sure it annoys a
few other people as well.
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