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List:       kmail-devel
Subject:    mime pgp signed+enc messages
From:       Peter Kjellstrom <cap () nsc ! liu ! se>
Date:       2008-09-03 14:25:50
Message-ID: 200809031625.55461.cap () nsc ! liu ! se
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Hello,

This is my first post to this list so please be kind to me :-)


Some background: I have a quite new kmail (latest from ubuntu-8.04, 
kmail-1.9.9, kde-3.5.9) and I have tried to search the kmail-devel archives 
for relevant posts but found nothing.

I frequently read and send pgp signed/encrypted e-mails with kmail. This 
typically works fine.


The problem: There is one kombination that does not work fully and that's 
reading pgp-mime e-mails that contain a combined signed+enc block (see 6.2 in 
http://www.ietf.org/rfc/rfc3156.txt). The method used by kmail when sending a 
pgp-mime signed+enc e-mail (see 6.1 in the same rfc) of course works 
perfectly.

What I mean by "not working fully" is that the signature check fails with a 
yellow box with the following text:

 Message was signed with unknown key.
 The validity of the signature cannot be verified.
 Status: Error: Signature not verified


Two indications that would make you think it would work:

 * If I copy-n-paste the encrypted block into "gpg --decrypt" the signature 
checks out ok
 
 * Kmail succeeds with a similar enc+signed block "inline", not mime.


Clients that use the "6.2" method from rfc3156 when sending pgp/gpg-mime 
include Emacs/Gnus and Tunderbird/Enigmail.


/Peter

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