My name is Jian Guo, I am currently working with the School of Physical and Mathematical Sciences of Nanyang Technological University in Singapore, and lead the Cryptanalysis Taskforce team. My research interests focus on symmetric-key cryptography, especially cryptanalysis, design and implementation of (lightweight) hash functions, block ciphers, authenticated encryption schemes, and their applications such as message authentication codes.
URL: http://guo.crypto.sg
Hiring: 2017-10-31: As advertised here, we have 2 PhD vacancies with research scholarship, if you are interested in symmetric-key cryptography research in NTU Singapore, send me an email with CV and reference letters. News: 2018-03-05: Joint with L. Song, J. Guo, and D. Shi, the paper entitled "New MILP Modeling: Improved Conditional Cube Attacks to Keccak-based Constructions" won the Kejte cryptanalysis prize. 2018-03-05: Joint with C. Chaigneau, T. Fuhr, H. Gilbert, J. Guo, J. Jean, J. R. Reinhard, L. Song, the paper entitled "Key-Recovery Attacks on Full Kravatte" won the Best Paper Award of FSE 2018. The paper broke the full Kravatte (a PRF design based on the SHA-3 round function), and several subsequent patched versions. 2017-10-29: New results on key recoveries on keyed constructions based on Keccak permutations and participation in the Ketje cryptanalysis competition. 2017-02-26: The CATF team solved the 6-round collision challenge of Keccak[r=1440,c=160,nr=6], refer to this announcement. 2016-07-11: The CATF team extended the 5-round collision attack to Keccak[r=640,c=160, nr=5], see announcement. 2016-05-27: The CATF team solved the 5-round collision challenge of Keccak[r=1440,c=160, nr=5], refer to http://keccak.noekeon.org/crunchy_may2016.html. 2016-04-25: The CATF team solved the 3-round preimage challenge of Keccak[r=1440, c=160, nr=3] and Keccak[r=640, c=160, nr=3], refer to http://keccak.noekeon.org/crunchy_april2016.html. Education
Employment
TeachingDiscrete Mathematics: AY14/15 S2, AY15/16 S2 Algorithms and Computing II: AY17/18 S2
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