[Bug 307776] New: GnuPG signature + attachment produces signed but empty mail

[m.eik michalke]

https://bugs.kde.org/show_bug.cgi?id=307776

            Bug ID: 307776
          Severity: critical
           Version: 4.9.1
          Priority: NOR
          Assignee: kdepim-bugs at kde.org
           Summary: GnuPG signature + attachment produces signed but empty
                    mail
    Classification: Unclassified
                OS: Linux
          Reporter: m at reaktanz.de
          Hardware: Ubuntu Packages
            Status: UNCONFIRMED
         Component: crypto
           Product: kmail2

this happened for the first time in early september (KDE 4.9.0): i wanted to
send a mail with an attachment and have both signed with my GnuPG key. the mail
was signed and sent, but completely empty, both the text message and the
attachment were gone.

the first time, i immediately tried to resend the mail several times, with
different identities, but the body always remained empty. i finally sent it
without signature and only then it was sent with text and attachment.

in the meantime this happened three times with different receivers. the most
annoying thing is that you lose all of your message! it's just completely gone,
because in the sent-mail the mail is empty as well.

Reproducible: Couldn't Reproduce

Steps to Reproduce:
*if* the problems occurs, it sticks with me. the only solution so far was
sending unsigned mails, then. i have no clue what originally causes it, because
i didn't manage to reproduce it reliably yet.
Actual Results:  
a signed but all empty mail is sent to the receiver.

Expected Results:  
a signed mail with the intended content is sent to the receiver.

it only occurs when trying to send with an attachment, text-only mails always
work fine. i also have S/MIME keys configured, and so far the problem never
occured with S/MIME signed mails, even if they have an attachment.

this is how all empty mails look like in my outgoing folder:

<snip>
From: "my name" <me at example.com>
To: "your name" <you at example.com>
Cc: info at example.com
Subject: Re: old subject
Date: Tue, 11 Sep 2012 13:36:52 +0200
Message-ID: <SoMe=StUfF at mymachine>
Organization: http://example.com
X-KMail-Identity: 523004225
User-Agent: KMail/4.9 (Linux/3.2.0-31-generic; KDE/4.9.0; x86_64; ; )
In-Reply-To: <SoMe=StUfF at receiver.example.com>
References: <SoMe=StUfF at receiver.example.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7Bit

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)

iEYEAREcAaYFAlBPIpEACgkQ6Dx8/Hy2+Q8rQACgkKYws1oUsy5n1Xlgcqrk06Wf
URIAnAsHBifs5ZGRrXcAvVqdhJyB9ZvH
=0HNy
-----END PGP SIGNATURE-----
</snip>

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