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</o:shapelayout></xml><![endif]--></head><body lang=DE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><b><u><span lang=EN-US style='font-size:14.0pt;font-family:RubFlama;color:#8DAE10;mso-fareast-language:DE'>CASA Distinguished Lecture with Christian Majenz (Technical University of Denmark)<o:p></o:p></span></u></b></p><p class=MsoNoSpacing style='text-align:justify;line-height:115%'><i><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>The Cluster of Excellence „CASA – Cyber Security in the Age of Large-Scale Adversaries“ invites you to the lecture. A registration is not necessary.<o:p></o:p></span></i></p><p class=MsoNoSpacing style='text-align:justify;line-height:115%'><i><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'><o:p> </o:p></span></i></p><p class=MsoNoSpacing style='text-align:justify;line-height:115%'><b><u><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>December 13, 2022, 12.00 noon (UTC+1)<o:p></o:p></span></u></b></p><p class=MsoNoSpacing style='text-align:justify;line-height:115%'><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>CASA Distinguished Lecture with <b>Christian Majenz (Technical University of Denmark)<o:p></o:p></b></span></p><p class=MsoNoSpacing style='text-align:justify;line-height:115%'><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>Topic: “How do quantum computers break crypto and what are we doing about it?”<o:p></o:p></span></p><p class=MsoNoSpacing style='text-align:justify;line-height:115%'><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>Location: Building TZR ("MB"), Level 1, Room SM-MW-106, Universitätsstraße 142, 44799 Bochum<br>Online via </span><b><u><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#8DAE10'>-></span></u></b><b><u><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'> </span></u></b><b><u><span style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#8DAE10'><a href="https://ruhr-uni-bochum.zoom.us/j/62855788073?pwd=dDhRc1RrM3gvMWJDemVWdWVXeVNNQT09#success"><span lang=EN-US style='color:#8DAE10'>Zoom</span></a></span></u></b><b><u><span style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#8DAE10'> </span></u></b><u><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'><o:p></o:p></span></u></p><p class=MsoNormal style='text-align:justify;line-height:115%;text-autospace:none'><b><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'><o:p> </o:p></span></b></p><p class=MsoNormal style='text-align:justify;line-height:115%'><b><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>Abstract:</span></b><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'> That a quantum computer can be used to break some cryptographic schemes via Shor’s algorithm is a well-known fact. But which cryptographic schemes are that? Where are they used? How does a quantum computer actually solve a computational task like integer factorization so much faster than a regular computer? In this lecture, I will try to answer these questions. I will then go on to to discuss a number of approaches for constructing post-quantum cryptography. Finally, I will show how quantum computing theory is necessary not only for cryptanalysis, but also for security proofs of modern cryptographic schemes.<o:p></o:p></span></p><p class=MsoNormal style='text-align:justify;line-height:115%'><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:justify;line-height:115%'><b><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>Bio:</span></b><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'> Christian Majenz obtained his master's degree in physics from the University of Freiburg, supervised by David Gross. He obtained his PhD from the University of Copenhagen under the supervision of Matthias Christandl, spending time at Caltech along the way. After a postdoc at the QuSoft Center and CWI in Amsterdam he moved back to Copenhagen where he is currently an Assistant Professor at the Technical University of Denmark. His main research interests are provable security for post-quantum cryptography, other quantum aspects of cryptography and representation-theoretic techniques in quantum theory.<o:p></o:p></span></p><p class=MsoNormal style='text-align:justify;line-height:115%'><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:justify;line-height:115%'><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>Find more information on our CASA Distinguished Lectures here: </span><b><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#8DAE10'><a href="https://casa.rub.de/en/news/distinguished-lectures"><span style='color:#8DAE10'>https://casa.rub.de/en/news/distinguished-lectures</span></a></span></b><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>.</span><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#8DAE10'> </span><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>On our</span><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#8DAE10'> <b>Youtube channel</b> </span><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#003560'>you’ll find recordings of the past events.</span><span lang=EN-US style='font-size:12.0pt;line-height:115%;font-family:RubFlama;color:#8DAE10'><o:p></o:p></span></p><div style='border:none;border-bottom:solid windowtext 1.0pt;padding:0cm 0cm 1.0pt 0cm'><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;font-family:RubFlama;color:#003560'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:RubFlama;color:#003560'><o:p> </o:p></span></p></div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:RubFlama'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#003560'>With kind regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#003560'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#003560'>Christina Scholten<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#003560'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#003560;mso-fareast-language:DE'>RUHR-UNIVERSITÄT BOCHUM<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#8DAE10;mso-fareast-language:DE'>Horst Görtz Institut for IT Security (HGI) / Cluster of Excellence CASA <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#1F497D;mso-fareast-language:DE'>Marketing and Public Relations<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#1F497D;mso-fareast-language:DE'>MC EG 78, Postfach MC 3<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:RubFlama;color:#1F497D;mso-fareast-language:DE'>Universitätsstr. 150<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:RubFlama;color:#1F497D;mso-fareast-language:DE'>44780 Bochum, Germany<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:RubFlama;color:#1F497D;mso-fareast-language:DE'>Tel: +49-(0)234-32-29274<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:RubFlama;color:#1F497D;mso-fareast-language:DE'>E-Mail</span><span style='font-size:9.0pt;font-family:RubFlama;color:#003560;mso-fareast-language:DE'>: </span><u><span style='font-size:10.0pt;font-family:RubFlama;color:#8DAE10;mso-fareast-language:DE'><a href="mailto:christina.scholten@rub.de"><span style='font-family:"Calibri",sans-serif;color:#8DAE10;mso-fareast-language:EN-US'>christina.scholten@rub.de</span></a><o:p></o:p></span></u></p><p class=MsoNormal><u><span style='font-size:10.0pt;font-family:RubFlama;color:#8DAE10;mso-fareast-language:DE'><o:p><span style='text-decoration:none'> </span></o:p></span></u></p><p class=MsoNormal><u><span style='font-size:10.0pt;font-family:RubFlama;color:#8DAE10;mso-fareast-language:DE'><a href="http://www.hgi.rub.de/"><span style='font-family:"Calibri",sans-serif;color:#8DAE10;mso-fareast-language:EN-US'>www.hgi.rub.de</span></a> <o:p></o:p></span></u></p><p class=MsoNormal><u><span style='font-size:10.0pt;font-family:RubFlama;color:#8DAE10;mso-fareast-language:DE'><a href="http://www.casa.rub.de/"><span style='font-family:"Calibri",sans-serif;color:#8DAE10;mso-fareast-language:EN-US'>www.casa.rub.de</span></a><o:p></o:p></span></u></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:RubFlama'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#1F497D;mso-fareast-language:DE'>If you no longer wish to receive information from the Horst Görtz Institute for IT Security, you can unsubscribe via </span><b><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#8DAE10;mso-fareast-language:DE'><a href="https://lists.ruhr-uni-bochum.de/mailman/listinfo/hgi-news-international"><span style='color:#8DAE10'>this link</span></a></span></b><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;color:#1F497D;mso-fareast-language:DE'>.</span><span lang=EN-US style='font-size:9.0pt;font-family:RubFlama;mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> 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