Year 2019 • 2019 Posco science fellowship  • Elected member of the Korean Academy of Science and Technology (2019.1.21.) • Teaching award of the college of Natural Sciences of Seoul National University  (2019.3.8.) • Research award of the college of Natural Sciences of Seoul National University (2019.3.8.) • POSCO TJ Park Award (2019.4.3.) • Award for meritorious service of the Korean Mathematical Society (2019.10.26.) • Sangsan prize for young mathematician of the Korean Mathematical Society (2019.10.26.) • DI-Mathematician award of the Korean Mathematical Society (2019.10.26.) • Teaching award of the college of Natural Sciences of Seoul National University (2019.9.6.) Year 2018 • 2018 Posco science fellowship • Teaching award of the college of Natural Sciences of Seoul National University (2018.3.9.) • Research award of the college of Natural Sciences of Seoul National University (2018.3.9.) • Paper award of the Korean Mathematical Society (2018.10.5.) • Award for meritorious service of the Korean Mathematical Society (2018.10.5.) • Culture prize (academic) of the city of Seoul (2018.11.12.) • Science and technology award of the month (2018.12.6.) • Basic researcher of the year (2018.12.5.) Year 2017 • Research award of the college of Natural Sciences of Seoul National University (2017.3.3.) • Teaching award of the college of Natural Sciences of Seoul National University (2017.3.3) • Education prize of Seoul National University (2017.5.16.) • Teaching award of the college of Natural Sciences of Seoul National University (2017.9.8.) • DI-Mathematician award of the Korean Mathematical Society (2017.10.28.) • Education prize of Seoul National University (2017.11.13.) • Korean Science Award (2017.12.20.) Year 2016 • Selected as a member of The Korean Academy of Science and Technology (2016.1.8.) • Teaching award of the college of Natural Sciences of Seoul National University (2016.3.25.) • Prize for an excellent paper from the Korean Mathematical Society (2016.4.23.) • Elected member of the  National Academy of Sciences (2016.7.8.) • Culture prize (academic) of the city of Seoul (2016.12.7.) • Prosecutor General's Award (2016.12.) Year 2015 • Elected member of The Korean Academy of Science and Technology (2015.1.9.) • Medal for science and technology (2015.4.21.) • Prize for an excellent paper from the Korean Mathematical Society (2015.4.25.) Year 2014 • Education prize of the Korean Mathematical Society (2014.4.25.) • Science and Technology Award of the Month (2014.5.23.) • Member elected as leading creative researcher (2014.6.3.) • Award for meritorious service of the Korean Mathematical Society (2014.10.25.) • Science Award of the Korean Mathematical Society (2014.10.25.) • S-oil  award for excellent dissertation (2014.11.24.) Year 2013 • Receives Korea's highest prize for science and technology (2013.7.5.) Year 2012 • Elected fellow of the American Mathematical Society • Receives an award for meritorious service from the Korean Mathematical Society (2012.10.5.)  • Receives a science award from the Korean Mathematical Society (2012.10.5.) • Receives a research award from the faculty of natural sciences of Seoul National University (2012.9.7.) • Receives this month's scientist award (2012.8.31.) • Receives a prize for an excellent paper from the Korean Mathematical Society (2012.4.28.) Year 2011 • Receives the Korea science award (2011.12.16.) • Receives the 2011 research award from the faculty of natural sciences of Seoul National University (2011.6.13.) • Receives science medal (2011.4.21.) Year 2010 • Receives the 14th young researcher's award (2010.12.22.) • Receives the Korea scientific library award (2010.4.16.)  • Receives the Posco Cheongam science award (2010.3.23.) Year 2009 • Receives science award from the Korean Mathematical Society (2009.12.18.) • Receives highest Korean award for scientist (2009.7.7.) • Receives 12th young researcher's award (2009.3.18.) Year 2008 • Receives an award for the stimulation of national encryption (2008.12.26.) • Elected as the excellent scientist of 2008 (2008.10.28.) • Receives the 2008 research award from the faculty of natural sciences of Seoul National University (2008.9.5.)  • Receives the Asiacrypt award for most excellent paper • Receives a prize for a paper from the Korean Mathematical Society (2008.4.26.) Year 2007  • Receives excellent teaching award from the faculty of natural sciences of Seoul National University • Receives excellent research award from the faculty of natural sciences of Seoul National University  • Elected as excellent researcher of 2007 (2007.12.18.) • Receives the 2007 research award from the faculty of natural sciences of Seoul National University (2007.6.13.) • 'Civilization and mathematics' is chosen as excellent lecture course (2007.5.29.)  • Receives the 2007 paper award from the Korean Mathematical Society (2007.4.21.) • Receives the 10th young researcher's award (2007.1.5.) Year 2006 • Honored at the national institute for information (2006.12.15.) • Receives the 16th award for excellent scientific paper (2006.11.30.) • Receives the 2006 scientific award from the Korean Mathematical Society (2006.10.28.) • Receives the 8th research award of the faculty of natural sciences of Seoul National University (2006.6.09.) • Receives the 2006 paper award from the Korean Mathematical Society (2006.4.22.) • Receives the 10th Korean science award for mathematics (2006.1.5.)