1688163 - opening signed message files no longer considered signed (when open as .eml from file or attachment)

Status: UNCONFIRMED

(MailNews Core :: Security: S/MIME, defect)

Description

[Richard PALO]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0

Steps to reproduce:

using an eIDAS certificat (for my primary profile) I sign and send a simple message to myself on a different profile.
Then I forward the message (attached, not included) back to my original account.

variant, export the file to an .eml

Actual results:

With the forwarded message, double clicking on the attached eml shows the message but it is not marked as signed and there is no certificat information.

Opening directly the eml file saved to disk gives the same result.

an example file is available upon request.

Expected results:

It goes without saying that the message should display as originally arrived, signed with certificat information (S/MIME).

BTW using ImportExport Tools NG correctly imports the file as signed with certificat information available.

Comment 1

[Richard PALO]

BTW, not sure if somewhat related to bug id 1598584

Comment 2

[Richard PALO]

just for preciseness, I'm not signing with my pgp key (and haven't tried such recently) but with my certeurope eIDAS certificat on a USB key.
it generates a Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="...
and adds the text: This is a cryptographically signed message in MIME format.

Comment 3

[Magnus Melin [:mkmelin]]

When referencing bugs, please just write "bug" and the number, like bug 1598584, so it gets auto linked.

Please attach the sample message to this bug (as .eml)

Comment 4

[Richard PALO]

Attachment: test sign.eml

Comment 5

[Magnus Melin [:mkmelin]]

It's showing as signed (well, signed, invalid signature since the CA is not trusted) for me.
But not when the message is opened from file or from within a message (as an .eml attachment).