[kmail2] [Bug 329597] New: PGP/MIME signed messages not accepted by Thunderbird's Enigmail

[Martin Albrecht]

https://bugs.kde.org/show_bug.cgi?id=329597

            Bug ID: 329597
           Summary: PGP/MIME signed messages not accepted by Thunderbird's
                    Enigmail
    Classification: Unclassified
           Product: kmail2
           Version: 4.11.3
          Platform: Debian testing
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: NOR
         Component: crypto
          Assignee: kdepim-bugs at kde.org
          Reporter: martinralbrecht at googlemail.com

If  the option "Word wrap at column: XX" (say 78) is set in the "General" tab
of the "Composer" settings then the PGP/MIME signature generated by KMail is
not accepted by Thunderbird's Enigmail.

If line breaks are added by hand and/or if "Word wrap at column: XX" is
deselected, then the generated signature is reported as valid by Thunderbird's
enigmail.


Reproducible: Always

Steps to Reproduce:
1. Select "Word wrap at column: 78" in the "General" tab of the "Composer"
settings
2. Write an e-mail, say, with text longer than 78 characters (do not add any
line breaks by hand)
3. Sign the message using PGP/MIME and send it
4. Open the mail in Thunderbird
Actual Results:  
Thunderbird's Enigmail reports: "Error - signature verification failed; click
on 'Details' button for more information". Clicking on details reports:
"OpenPGP Security Info; Error - signature verification failed"

Expected Results:  
Thunderbird's Enigmail reports: "Good signature from XXX" 

I don't know if this is a bug in Thunderbird's Enigmail or in KMail2. Note that
the messages rejected by Thunderbird's Enigmail are accepted by KMail2, i.e.
KMail2 is consistent.

Disabling automatic word wrapping makes the issue disappear.

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