Re: using the fringe to indicate good signatures

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+From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>\r
+To: David Edmondson <dme@dme.org>, notmuch@notmuchmail.org\r
+Subject: Re: using the fringe to indicate good signatures\r
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+Date: Tue, 08 Sep 2015 02:43:49 -0400\r
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+On Tue 2015-09-08 02:01:42 -0400, David Edmondson wrote:\r
+> On Mon, Sep 07 2015, Daniel Kahn Gillmor <dkg@fifthhorseman.net> wrote:\r
+>> On Thu 2015-08-20 09:12:26 -0400, David Edmondson wrote:\r
+>>> After listening to bremner, dkg et al. from Heidelberg, I threw together\r
+>>> a quick patch to see how we might indicate signature validity in the\r
+>>> fringe. The intention is to prompt more discussion - this code is not\r
+>>> ready to ship.\r
+>>\r
+>>> The patch is attached. The result looks something like:\r
+>>>     http://dme.org/data/images/notmuch-signed-fringe.png\r
+>>\r
+>> I like the basic idea of this, thanks for putting it together.  It's\r
+>> good to put security indicators in a region of the UI that the message\r
+>> content cannot modify or spoof.\r
+>>\r
+>> What do we think should be done if there are multiple nested signatures?\r
+>\r
+> Cry?\r
+\r
+heh :)\r
+\r
+> More seriously, we could use the indentation space for a similar\r
+> indicator, which would allow us some room at an appropriate depth for\r
+> each message (but not each part (in the default configuration)).\r
+\r
+hm, but couldn't the indentation space be spoofed by a well-crafted\r
+message?  that is: a non-indented message will consume space up to (but\r
+not including) the fringe.  so a well-crafted message could be made to\r
+*look* like an indented message, including whatever is comparable to the\r
+chrome/UI elements we would use for an actual signed message.\r
+\r
+I think it is also acceptable to just punt at some level -- we can say\r
+"notmuch-emacs will indicate the outermost signed message part in the\r
+fringe; it will not indicate nested signed messages in the fringe".\r
+this is still an improvement from the status quo.\r
+\r
+     --dkg\r