[Users] [Bug 3904] New: support for "protected-headers" is missing in GPG plugin

[noreply at thewildbeast.co.uk]

http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=3904

            Bug ID: 3904
           Summary: support for "protected-headers" is missing in GPG
                    plugin
    Classification: Unclassified
           Product: Claws Mail
           Version: other
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Plugins/Privacy/PGP
          Assignee: users at lists.claws-mail.org
          Reporter: peter.mueller at link38.eu

Some MUAs such as Thunderbird (via the Enigmail plugin) have implemented some
protection against metadata leakage in GPG.

One of them is called "protected-headers" and embeds the original subject line
in a PGP/MIME message. When an e-mail is decrypted, the original title is
recovered from these data.

Claws Mail does not support this at the moment so GPG messages with protected
headers usually show the subject line "Encrypted message".

Please see
- https://github.com/autocrypt/memoryhole
- https://trac.torproject.org/projects/tor/ticket/21880
for details.

Apart from the subject line, this bug has no effect on GPGs functionality at
all, but it would be nice to see it implemented.

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