When our organization sends messages to each other via a gnu mailman list, they frequently appear blank when they arrive. The tagline for the list appears normally at the end of the message but nothing else is displayed. Viewing the source for the messages contains an encrypted message eg. so it appears that enigmail is simply not recognizing the encrypted content.
I've been designated to track this down for the organization. Is this a known issue? Is there a workaround? Sinding messages to each other directly is working for now, but we would rather use the list so members aren't accidentally left out of discussions
Example message (after the header) obtained by 'view source':
This is an OpenPGP/MIME encrypted message (RFC 4880 and 3156)
--===============5587398421608159901==
Content-Type: multipart/encrypted;
protocol="application/pgp-encrypted";
boundary="otU1iJjFLFP7dRhz5mrgElzyACr8kV2T4"
This is an OpenPGP/MIME encrypted message (RFC 4880 and 3156)
--otU1iJjFLFP7dRhz5mrgElzyACr8kV2T4
Content-Type: application/pgp-encrypted
Content-Description: PGP/MIME version identification
That's the expected result in Enigmail since version 2.0.5, as response against the Efail attack. See the v2.0.5 announcement.
I improved the situation with Enigmail 2.0.8, such that the encrypted message part would be displayed as attachment which can be opened in a separate window. Decryption will only happen in that separate window.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
When our organization sends messages to each other via a gnu mailman list, they frequently appear blank when they arrive. The tagline for the list appears normally at the end of the message but nothing else is displayed. Viewing the source for the messages contains an encrypted message eg. so it appears that enigmail is simply not recognizing the encrypted content.
I've been designated to track this down for the organization. Is this a known issue? Is there a workaround? Sinding messages to each other directly is working for now, but we would rather use the list so members aren't accidentally left out of discussions
Example message (after the header) obtained by 'view source':
This is an OpenPGP/MIME encrypted message (RFC 4880 and 3156)
--===============5587398421608159901==
Content-Type: multipart/encrypted;
protocol="application/pgp-encrypted";
boundary="otU1iJjFLFP7dRhz5mrgElzyACr8kV2T4"
This is an OpenPGP/MIME encrypted message (RFC 4880 and 3156)
--otU1iJjFLFP7dRhz5mrgElzyACr8kV2T4
Content-Type: application/pgp-encrypted
Content-Description: PGP/MIME version identification
Version: 1
--otU1iJjFLFP7dRhz5mrgElzyACr8kV2T4
Content-Type: application/octet-stream; name="encrypted.asc"
Content-Description: OpenPGP encrypted message
Content-Disposition: inline; filename="encrypted.asc"
-----BEGIN PGP MESSAGE-----
Version: GnuPG v2.0.17 (MingW32)
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=M2eJ
-----END PGP MESSAGE-----
--otU1iJjFLFP7dRhz5mrgElzyACr8kV2T4--
--===============5587398421608159901==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline
X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTmVwYWxtb25p
dG9yIG1haWxpbmcgbGlzdApOZXBhbG1vbml0b3JAbXlwYmkubmV0Cmh0dHBzOi8vbXlwYmkubmV0
L2NnaS1iaW4vbWFpbG1hbi9saXN0aW5mby9uZXBhbG1vbml0b3IK
--===============5587398421608159901==--
Last edit: Neil Horning 2018-08-07
That's the expected result in Enigmail since version 2.0.5, as response against the Efail attack. See the v2.0.5 announcement.
I improved the situation with Enigmail 2.0.8, such that the encrypted message part would be displayed as attachment which can be opened in a separate window. Decryption will only happen in that separate window.