Bug 360910

I am not certain if this is a regression to bug 286481 again, the symptom looks very similar to me.

When receiving PGP/MIME encrypted mails from Apple Mail with GPGMail (in most cases, this means mails with attachments), KMail shows the MIME parts as attachments instead of asking to decrypt them.

The relevant message parts looks like this:

...
Content-Type: multipart/mixed;
        boundary="_003_55514CDCA78D430384C5F0810DF10C7Adsmpgde_"
MIME-Version: 1.0
X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4

 
--_003_55514CDCA78D430384C5F0810DF10C7Adsmpgde_
Content-Type: text/plain; charset="us-ascii"


--_003_55514CDCA78D430384C5F0810DF10C7Adsmpgde_
Content-Type: application/pgp-encrypted;
        name="PGPMIME Versions Identification"
Content-Description: PGP/MIME Versions Identification
Content-Disposition: attachment; filename="PGPMIME Versions Identification";
        size=77; creation-date="Tue, 22 Mar 2016 16:09:18 GMT";
        modification-date="Tue, 22 Mar 2016 16:09:18 GMT"
Content-ID: <D82BB3DF89947646AD6C4C24C8C54BAC@um.gwdg.de>
Content-Transfer-Encoding: base64

VmVyc2lvbjogMQ0NCg==

--_003_55514CDCA78D430384C5F0810DF10C7Adsmpgde_
Content-Type: application/octet-stream; name="encrypted.asc"
Content-Description: OpenPGP encrypted message.asc
Content-Disposition: attachment; filename="encrypted.asc"; size=3183;
        creation-date="Tue, 22 Mar 2016 16:09:18 GMT";
        modification-date="Tue, 22 Mar 2016 16:09:18 GMT"
Content-ID: <58A712E65AB1824AB726904A6449178F@um.gwdg.de>
Content-Transfer-Encoding: base64

LS0tLS1CRUdJTiBQR1AgTUVTU0FHRS0tLS0tDQpDb21tZW50OiBHUEdUb29scyAtIGh0dHBzOi8v
Z3BndG9vbHMub3JnDQoNCmhRSU1BK1Yrc2NWMjZLanRBUS8vVFUvamtkMG0zVzRDRDJmdjd4NGJu
...
RjdnPT0NCj0yRUlaDQotLS0tLUVORCBQR1AgTUVTU0FHRS0tLS0tDQo=

--_003_55514CDCA78D430384C5F0810DF10C7Adsmpgde_--

The full message is available as well, if necessary.

Reproducible: Always

Steps to Reproduce:
Get PGP/MIME encrypted message from Apple Mail.

Actual Results:  
Does not decrypt message.

Expected Results:  
Should decrypt message.

If the file "encrypted.asc" is saved to disc and decrypted manually, it can be opened by KMail as a separate message.