<div dir="ltr"><div dir="ltr" style="font-size:12.800000190734863px"><div style="font-size:12.8px"><b>Date and time:</b> <span class="gmail-m_-5173328112534338902m_-8010431297279398467aBn" style="border-bottom-width:1px;border-bottom-style:dashed;border-bottom-color:rgb(204,204,204)"><span class="gmail-m_-5173328112534338902m_-8010431297279398467aQJ"><span class="gmail-aBn" tabindex="0"><span class="gmail-aQJ">Wed 9/13</span></span></span></span>, <span class="gmail-m_-5173328112534338902m_-8010431297279398467aBn" style="border-bottom-width:1px;border-bottom-style:dashed;border-bottom-color:rgb(204,204,204)"><span class="gmail-m_-5173328112534338902m_-8010431297279398467aQJ"><span class="gmail-aBn" tabindex="0"><span class="gmail-aQJ">2-4pm</span></span></span></span>.</div><div style="font-size:12.8px"><b>Location:</b> Boston University, MCS building, room 148</div><div style="font-size:12.8px"><b>Speaker:</b> Dakshita Khurana</div><div style="font-size:12.8px"><b>Title: </b>The virtues of two-message OT</div><div style="font-size:12.8px"><b>Abstract:</b></div><div style="font-size:12.8px"><div style="font-size:12.8px">This talk will be centered around some of the recent techniques that use two-message oblivious transfer (OT) to obtain two-message cryptographic protocols.</div><div style="font-size:12.8px"><span style="font-size:12.8px">(1) We will describe new techniques which help prove that simple two-message arguments built using OT, satisfy strong privacy guarantees. </span><span style="font-size:12.8px">The include variants of distributional weak zero-knowledge, strong witness indistinguishability and witness hiding in the delayed-input setting.</span></div><div style="font-size:12.8px"><span style="font-size:12.8px">(2) We will also discuss how two-message OT helps obtain non-malleability, which has further implications to two-message argument systems with strong forms of privacy.</span><br></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><span style="font-size:12.8px">based on joint works with Abhishek Jain, Yael Kalai, Ron Rothblum and Amit Sahai.</span><span class="gmail-HOEnZb"><font color="#888888"><br></font></span></div><div style="font-size:12.8px"><span style="font-size:12.8px"><br></span></div><div style="font-size:12.8px"><span style="font-size:12.8px">Lunch will be provided</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">NOTE: this talk is part of the Crypto Reading Group series. </span><span style="font-size:12.8px">The choice of Wed is for this week only; vote for the day at </span><a href="https://beta.doodle.com/poll/t8qmgvppmvpxuv88" target="_blank" style="font-size:12.8px">https://beta.doodle.com/pol<wbr>l/t8qmgvppmvpxuv88</a><span style="font-size:12.8px">  if you haven&#39;t done so yet. Not all talks will be announced here; t</span><span style="font-size:12.8px;color:rgb(0,0,0)">o join the mailing list</span><span style="font-size:12.8px;color:rgb(0,0,0)">, click </span><a href="https://groups.google.com/forum/#%21forum/boston-crypto-reading-group-2017/join" target="_blank" style="font-size:12.8px">https://groups.google.co<wbr>m/forum/#!forum/boston-<span class="gmail-il">crypto</span>-<wbr><span class="gmail-il">reading</span>-<span class="gmail-il">group</span>-<span class="gmail-il">2017</span>/join</a><span style="font-size:12.8px;color:rgb(0,0,0)"> </span></div></div></div><span class="gmail-HOEnZb" style="font-size:12.800000190734863px"><font color="#888888"><p></p></font></span></div>