Re:Lavabit abruptly shuts down
by rorrr2 on Thursday August 08, 2013 @09:03PM
(#6183057)
It all happens on the client side. Servers only store the encrypted emails and have no idea what the contents or the keys are.
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The same server(s) also control the JavaScript code run by the client/browser. They could serve special code (to any one the government wanted to spy on) that returned their password to the server.
That's exactly why LavaBit shut down, looks like they were forced to do that.