[kmail2] [Bug 329961] New: PGP silently fails to encrypt mails for users with different encryption protocols (pgp/mime vs inline pgp)

[Till Schäfer]

https://bugs.kde.org/show_bug.cgi?id=329961

            Bug ID: 329961
           Summary: PGP silently fails to encrypt mails for users with
                    different encryption protocols (pgp/mime vs inline
                    pgp)
    Classification: Unclassified
           Product: kmail2
           Version: 4.12
          Platform: Gentoo Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: crypto
          Assignee: kdepim-bugs at kde.org
          Reporter: till2.schaefer at uni-dortmund.de

setup: 
- two users (A and B) in address book
- user A is set to allow only inline pgp mails
- user B is set to allow only pgp/mime mails 

problem: 
if you write a mail to both users and select one of the two protocols, the mail
is send without feedback to the user. However, kmail fails to encrypt the mail
to the user with the other protocol. Therefore the mail is unreadable, if you
select inline pgp for user b and it is unreadable for user a if you select
pgp/mime. 

possible solutions: 
1. Inform the user that it is not possible to send an encrypted mail to both
users at once
2. Send the mail in different protocol versions to the different users.

I think that solution 2 is the best approach. Maybe there should be a warning
to the user and the possibility to abort. The second approach might interfere
with bug 121692.

Reproducible: Always

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