[kdepim-users] kmail: strange behaviour with some s/mime encrypted emails

[Ingo Klöcker]

On Tuesday 29 January 2008, Andreas Petzold wrote:
> Hi,
>
> I routinely sign my emails using s/mime. I rarely use s/mime
> encryption, but I haven't seen a problem for a long time. However,
> recently a friend of mine sent me two encrypted emails. The first one
> from kmail. No problems at all with that email.
>
> The second one he sent from thunderbird and this email is shown as
> garbled junk in the message preview pane as you can see here:
>
> http://tinyurl.com/2jq4z6n
>
> Only when I accidentally hit the Enter key the message was decrypted
> and readable see
>
> http://tinyurl.com/38fx3e
>
> I asked a number of people to send me s/mime encrypted emails from
> thunderbird and the result is always the same.
>
> I had a closer look at the emails to try to find a difference. I
> found a couple of small differences, but since I don't know (yet)
> what a standard compliant s/mime encrypted email should look like, I
> don't know which one is the reason of the problem:
>
> * Attachments:
>       - from thunderbird: kmail shows an attachment named "opaque
> signed data" - from kmail: kmail shows no attachment
>
> * Header info:
>       - from thunderbird:
>
> Content-Type: application/x-pkcs7-mime;
>      name="smime.p7m"
> Content-Transfer-Encoding: base64
> Content-Disposition: attachment; filename="smime.p7m"
> Content-Description: S/MIME Encrypted Message
>
>       - from kmail:
>
> Content-Type: application/pkcs7-mime;
>      smime-type=enveloped-data;
>      name="smime.p7m"
> Content-Transfer-Encoding: base64
> Content-Disposition: attachment; filename="smime.p7m"
>
> Can one of the experts make sense of this?

gpa-dev at gnugp.org might be a better address for getting the answer of an 
expert wrt S/MIME support in KMail.


Regards,
Ingo
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