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On 15.09.13 16:44, Lars Noodén wrote:
> On 09/15/2013 05:39 PM, Patrick Brunschwig wrote:
>> On 14.09.13 14:15, Max Maass wrote:
>>> On 09/14/2013 01:56 PM, Lars Noodén wrote:
>>>> Hi,
> 
>>>> I notice that if a message draft is started encrypted and
>>>> then postponed, it becomes unencrypted when the message is 
>>>> continued. The box becomes unchecked in the Encrypt Message 
>>>> checkbox under the OpenPGP menu. Then, unless encryption is 
>>>> re-specified right away, the draft seems to get saved 
>>>> unencrypted in the drafts folder. This save is automatic
>>>> after a few minutes, so there is only a short window to
>>>> manually restore the missing encryption. That exposes the
>>>> contents of the message if no action is taken.
> 
>>>> This happens every time a message is started, postponed and 
>>>> then resumed.
> 
>>>> The steps to reproduce it are as follows:
> 
>>>> 1.  start a message with encryption 2.  save it and then 
>>>> postpone it, closing the message 3.  find the unfinished 
>>>> message in the appropriate drafts folder and resume editing
>>>> 4. either wait for the message to be saved (unencrypted) or
>>>> repeat steps 2 and 3.
> 
>>>> The message will go from being encrypted to being unencrypted
>>>>  every time.
> 
>>> I can confirm this behaviour on Linux x64 with latest
>>> (non-beta) Enigmail and Thunderbird 17.0.8 (latest from ubuntu 
>>> repositories). Never noticed it before, but this is a big 
>>> information leak.
> 
>> Is my understanding correct that you only get this behavior if
>> the draft message is _not_ shown before you continue editing it,
>> e.g. if the preview pane is off?
> 
>> -Patrick
> 
> It seems to happen even with the preview pane open at the bottom
> of the window.  Try closing and opening the message again.  It will
> go to plain text if encryption is not manually reselected again
> each time.
> 
> (I'm not sure of the names.  The preview pane is the pane at the 
> bottom of the window under the pane with the list of message
> subjects, right?  )

Is the draft message encrypted at all?

- -Patrick
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