1341564 - thunderbird should hide subject in an encrypted message

Status: RESOLVED INVALID

(Thunderbird :: Untriaged, defect)

Description

[Toralf Förster]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20170219190720

Steps to reproduce:

got a pgp-encrypted emssage from a friend


Actual results:

just read :

subject: Encrypted Message

until I decrypted it (by putting my password into the appropriate window)


Expected results:

I'd like that Thunderbird hides the subject too in the SMTP Header

Comment 1

[Jorg K (CEST = GMT+2)]

Patrick, can you please comment here. As far as I know, headers, including the subject, are not encrypted.

Comment 2

[Patrick Brunschwig]

SMTP by default does not allow to encrypt headers. However, we recently defined an extension to RFC 3156 (PGP/MIME), which replaces the subject with a standard text (such as "Encrypted Message") and places the original header into the MIME tree of the encrypted message [1].

Enigmail supports this for PGP/MIME messages since v1.9 (off by default for new messages); the feature will be enabled by default with the next major version of Enigmail

[1] http://modernpgp.org/memoryhole/

Comment 3

[Toralf Förster]

I do have 1.9.*1* here, which at least supports reading such mails, but sending with this new feature is not possible, or ?

Comment 4

[Patrick Brunschwig]

It is possible. You have to customize your toolbar and add the button "Protect Subject" (no icon assigned to it). There is also a hidden preference to turn the feature on by default.

Comment 5

[Toralf Förster]

(In reply to Patrick Brunschwig from comment #4)
Under Gentoo and 45.0.7 there's no appropriate menu item to select - is this a Gentoo bug ?

Comment 6

[Patrick Brunschwig]

https://support.mozilla.org/t5/Customize-controls-options-and/How-to-Customize-Toolbars/ta-p/16626

Comment 7

[Toralf Förster]

Attachment: Screenshot_20170223_090639.png

There's no appropriate menu item here (enigmail 1.9.1)

Comment 8

[Patrick Brunschwig]

As protecting the subject is part of message sending (not receiving), you have to customize the toolbar of the message composition window, not the message reading window...

I.e. start writing a new mail and then customize the menu.

Comment 9

[Toralf Förster]

Oh - sry, PEBKAC, thx for the hint