I think you&#x27;re referencing this:<p><a href="http:&#x2F;&#x2F;www.realworldcrypto.com&#x2F;rwc2016&#x2F;program&#x2F;rwc16-shacham.pdf?attredirects=0&amp;d=1" rel="nofollow">http:&#x2F;&#x2F;www.realworldcrypto.com&#x2F;rwc2016&#x2F;program&#x2F;rwc16-shacham...</a><p>Shame there is no recording (and no paper).