Jian Guo

My name is Jian Guo, I am currently an Associate Professor (with tenure) with School of Physical and Mathematical Sciences, Nanyang Technological University in Singapore. My research interests focus on cryptography, especially cryptanalysis, design and implementation of (lightweight) hash functions, block ciphers, authenticated encryption schemes, and their applications such as message authentication codes. As such, I head the Cryptanalysis Taskforce research team at NTU, publish papers, give talks, and also actively serve the community. My team and I have won several open competitions on cryptanalysis on various symmetric-key cryptography standards.

I am constantly looking for PhD candidates (refer to this page) and Postdoc Research Fellows on both symmetric-key cryptography and privacy-preserving technologies, feel free to contact me for more information.

PGP Public Key

Recent Services / Appointments

NTU

Adjunct Appointments

Research Community

Government Agencies / Organizations

Industry

Community

Awards

Hiring

News

2024/08: Invited talk at CryptoIC 2024 on "An Overview on the Links between Cryptanalysis and Side-Channel Attacks".
2023/12: Invited talk at ASK 2023 and keynote talk at ChinaCrypt 2023 on "A Realistic Summary and Projection of Cryptanalysis"
2022/12: Invited talk at Asiacrypt 2022 on "Evolution of Cryptanalysis: Security Updates on SHA-3 and AES Hashing"
2022/11: Joint with L. Song and H. Wang, the paper entitled "Key Structures: Improved Related-Key Boomerang Attack against the Full AES-256" won the Best Paper Award of ACISP 2022. The paper improves the attack with lowest time complexity from 2^99 to 2^91 with the access to more related keys.
2022/04: Lanuch of Master of Science in Cyber Security.
2022/03/24: humbled to receive SPMS Young Reseacher Award 2021.
2022/02/14: News release by NTU/SPMS on the organization of Asiacrypt 2021.
2021/11/17: thanks to all for electing me to the IACR Board of Directors (Term 2022-2024), as promised I will do my best to promote research, education, and collaborations in the crypto community. References: the IACR 2021 Election and news release by NTU/SPMS.
2021/03: The first preimage attack against 8-round AES hashing: news release by NTU/CoS, eprint
2019/03: Invited talk at FSE 2019 on "Security of SHA-3 and Related Constructions"
2018-02-08: 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.

Education

01.2007 - 09.2010 Doctor of Mathematical Sciences School of Physical and Mathematical Sciences
PhD Supervisor: Huaxiong Wang Nanyang Technological University, Singapore

08.2003 - 11.2006 Bachelor of Engineering School of Computer Engineering
(with First Class Honors) Nanyang Technological University, Singapore
FYP Supervisor: Suiping Zhou

Employment

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

Teaching

Contacts

Email: guojian [at] ntu.edu.sg
Address: School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371.