Re: Decoding application/x-pkcs7-mime?

[David Engster <deng@randomsample.de>]

Norman Walsh <ndw@nwalsh.com> writes:
> One of my colleagues has started sending mail signed as follows:
>
>   Content-Type: application/x-pkcs7-mime;smime-type=signed-data;name=smime.p7m;
>   	smime-type=signed-data;
> 	name="smime.p7m"
>   Content-Transfer-Encoding: base64
>   Content-Disposition: attachment;
> 	filename="smime.p7m"
>   Content-class: urn:content-classes:message

This looks like signed and encrypted? A purely signed message usually
has a part

Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"
Content-Description: S/MIME Cryptographic Signature

Anyway. Do you have something like

(add-to-list 'gnus-newsgroup-variables '(gnus-buttonized-mime-types . '("multipart/encrypted" "multipart/signed" "multipart/alternative")))
(setq mm-decrypt-option 'always)
(setq mm-verify-option 'always)

in your .gnus?

Some time ago, I've written up my quest to get S/MIME to work in Gnus on
the EmacsWiki:

http://www.emacswiki.org/cgi-bin/wiki/GnusSMIME

I guess this is not up-to-date anymore, but it might still work. I also
remember trying to use EPG and gnutls, but it didn't work at that
time. If someone succesfully uses S/MIME with those, I'd love to see an
example setup.

-David