My name is Jian Guo, I am currently an Assistant Professor 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.

Hiring: [2018-12-24] There is one open position of (senior) postdoc research fellow for 2 years, on symmetric-key cryptography including but not limited to provable security, cryptanalysis, and design. Details are available here: https://www.iacr.org/jobs/#1848

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.
2017-02-26:    The CATF team solved the 6-round collision challenge of Keccak[r=1440,c=160,nr=6], refer to this announcement.
2016-08-15:    CLOC+SILC is selected into the 3rd round of CAESAR competition.
2016-08-01:    PHOTON is now part of ISO lightweight hash function standards, ISO/IEC 29192-5:2016.
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.


01.2007 - 09.2010 Doctor of Mathematical Sciences
Supervisor: Huaxiong Wang
School of Physical and Mathematical Sciences
Nanyang Technological University, Singapore
08.2003 - 11.2006 Bachelor of Engineering
(with First Class Honors)
Supervisor: Suiping Zhou
School of Computer Engineering
Nanyang Technological University, Singapore


03.2013 - present Nanyang Technological University, Singapore
09.2010 - 02.2013 Institute for Infocomm Research, Singapore
01.2007 - 09.2010 Nanyang Technological University, Singapore


Discrete Mathematics: AY14/15 S2, AY15/16 S2, AY18/19 S1
Algorithms and Computing II: AY17/18 S2, AY18/19 S2


Address: Division of Mathematical Sciences, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371.
Tel:    (+65) 6514 8399    Fax:   (+65) 6515 8213

Last partially updated on 04 June 2018.