Encrypting / Signing the mail subject?

[Patrick Brunschwig]

On 16.01.15 21:29, Daniel Kahn Gillmor wrote:
[...]
> 
> Embedded Header Proposal
> ========================
> 
> Here's a counter-proposal to consider, which relies on PGP/MIME.
> PGP/MIME messages are the only reliably structured mail OpenPGP e-mail
> messages anyway [0].
> 
> A normal PGP/MIME signed text/plain message structure looks like this
> (Content-Type of each part is shown) [1]:
> 
> A └┬╴multipart/signed
> B  ├─╴text/plain 
> C  └─╴application/pgp-signature [signature.asc]
> 
> I propose sending a message with an additional text/rfc822-headers [2] part
> injected as a sub-part in the message, like this:
> 
> D └┬╴multipart/signed
> E  ├┬╴multipart/mixed
> F  │├─╴text/rfc822-headers inline [header] 
> G  │└─╴text/plain
> H  └─╴application/pgp-signature [signature.asc]
> 
> the text/rfc822-headers mime type is defined here:

[...]

> 
> What do you think?

I think your proposal is a very nice idea. I will implement this in a
future version of Enigmail.

-Patrick