<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Fri, Apr 18, 2014 at 1:42 PM, Trevor Perrin <span dir="ltr"><<a href="mailto:trevp@trevp.net" target="_blank">trevp@trevp.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> (1) It seems feasible to put messages into a causal/partial order by<br>
having them piggyback references and hashes to their parents (aka<br>
"causal predecessors").<br></blockquote><div><br></div><div>I think that vector clocks (which wouldn't necessarily refer to previous messages, perhaps just message counts since joining a conversation) are the best bet at getting a realistic *partial* (not total) ordering of events</div>
<div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> (2) If these partially-ordered messages are displayed in a linear<br>
order, then "ice cream" attack becomes possible, where a message is<br>
snuck in to make your innocent response about ice-cream seem about<br>
something else.<br></blockquote><div><br></div><div>Vector clocks will have to deal with siblings, in which case it will have to pick an order when the ordering is ambiguous</div><div> </div></div>-- <br>Tony Arcieri<br>
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