Notmuch not able to decrypt some GPG multipart/encrypted emails - Was: Re: How to...

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+From: Olivier Berger <olivier.berger@it-sudparis.eu>\r
+Subject: Notmuch not able to decrypt some GPG multipart/encrypted emails -\r
+       Was: Re: How to decrypt multipart/encrypted parts in notmuch-emacs\r
+Date: Wed, 11 Apr 2012 18:58:29 +0200\r
+Lines: 82\r
+Message-ID: <87sjgaciiy.fsf@inf-8657.int-evry.fr>\r
+References: <874nsqe28a.fsf@inf-8657.int-evry.fr>\r
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+\r
+\r
+Some more details :\r
+\r
+Olivier Berger <olivier.berger@it-sudparis.eu>\r
+writes:\r
+\r
+> Hi.\r
+>\r
+> Is there a way to decrypt multipart/encrypted messages in notmuch-emacs\r
+> ?\r
+>\r
+> I can only get a purple "Decryption error" message...\r
+>\r
+> The mail looks like :\r
+>\r
+> MIME-Version: 1.0\r
+> Content-Type: multipart/encrypted; boundary="=-=-=";\r
+>      protocol="application/pgp-encrypted"\r
+>\r
+> --=-=-=\r
+> Content-Type: application/pgp-encrypted\r
+>\r
+> Version: 1\r
+>\r
+> --=-=-=\r
+> Content-Type: application/octet-stream\r
+>\r
+>\r
+> --=-=-=--\r
+>\r
+> Note that gnus decrypts it without any problem.\r
+>\r
+\r
+I traced a bit what could be wrong and found out that it's not in the\r
+emacs part :\r
+\r
+$ notmuch show --decrypt "subject:whatever"\r
+\r
+[...]\r
+\r
+header{\r
+olivier.berger@it-sudparis.eu (20 mins. ago) (encrypted)\r
+Subject: whatever\r
+From: olivier.berger@it-sudparis.eu\r
+To: whomever\r
+Date: Wed, 11 Apr 2012 18:32:23 +0200\r
+\r
+header}\r
+\r
+body{\r
+Failed to decrypt part: Canceled.\r
+\r
+part{ ID: 1, Content-type: multipart/encrypted\r
+\r
+part{ ID: 2, Filename: msg.asc, Content-type: application/pgp-encrypted\r
+Non-text part: application/pgp-encrypted\r
+\r
+part}\r
+\r
+part{ ID: 3, Content-type: application/octet-stream\r
+Non-text part: application/octet-stream\r
+\r
+part}\r
+\r
+part}\r
+\r
+body}\r
+\r
+message}\r
+\r
+\r
+Dunno what happens. Anyone else ?\r
+\r
+Thanks in advance.\r
+\r
+Best regards,\r
+\r
+-- \r
+Olivier BERGER \r
+http://www-public.it-sudparis.eu/~berger_o/ - OpenPGP-Id: 2048R/5819D7E8\r
+Ingenieur Recherche - Dept INF\r
+Institut Mines-Telecom, Telecom SudParis, Evry (France)\r
+\r