Academic Profile

Academic Profile

Asst Prof Guo Jian

Assistant Professor, School of Physical & Mathematical Sciences - Division of Mathematical Sciences

Asst Prof Guo Jian

Guo Jian received his B. Eng with First class honors from SCE, and PhD from SPMS NTU in 2007 and 2011, respectively. He then worked with Institute for Infocomm Research in Singapore for 2.5 years, and returned to NTU as a postdoctoral research fellow in 2013. He subsequently joined Temasek Labs as a Principal Investigator and SPMS as an Assistant Professor.

His major research interest is symmetric-key cryptography, including cryptanalysis, design and implementation of (lightweight) hash functions, block ciphers, authenticated encryption schemes, and their applications such as message authentication codes. Among others, he contributed a lot to the security analysis of cryptographic primitives such as AES and SHA-3, and published 30+ papers in top conferences and journal under the International Association for Cryptologic Research (IACR), which received 2000+ citations according to Google Scholar.

He is founding co-chair of ASK --- Asian workshop on Symmetric-Key cryptography: He served/will serve as the general (co-)chair of FSE 2013 and ASIACRYPT 2021, program committee members of FSE 2017, 2018, 2019, 2021, ASIACRYPT 2017, 2019, 2020, and EUROCRYPT 2018, 2020 etc, editorial board member of Journal of Cryptologic Research, and reviewer for all major cryptography conferences and journals. He gave an invited talk on the cryptanalysis of SHA-3 at FSE 2019. He is a member of board of directors of IACR, a member of ASIACRYPT steering committee representing for Singapore, and also a member of the Security and Privacy Standards Technical Committee acting as Singapore delegate of the International Standardization ISO/IEC JTC 1/SC 27. He has been leading the Cryptanalysis Taskforce research team at NTU:
Research Interests
- Symmetric-Key Cryptography
- Cryptanalysis
- Quantum Attacks
- Lightweight Cryptography
- FHE/MPC Friendly Designs
Current Projects
  • A Study of Adversarial Examples for Proactively Protecting Images against DeepFake and DeepNude
  • Cryptanalysis and Implementation of Candidates of the On-going NIST Lightweight Authenticated Encryption Competition
  • Cryptanalysis: From Manual Methods to Automation, and Machine Learning
  • Lightweight Cryptography
  • Project HYPERVENOM - Design and Analysis of Authenticated Encryption Ciphers
  • Project HYPERVENOM - Homomorphic Encryption and Blom-Like Key Pre-Distribution Scheme
  • Security Analysis of Authenticated Encryption Candidates of CAESAR Competition
  • Strategic Centre for Research in Privacy-Preserving Technologies & Systems (SCRIPTS)
Selected Publications
  • Zhenzhen Bao, Itai Dinur, Jian Guo, Gaëtan Leurent, Lei Wang. (2020). Generic Attacks on Hash Combiners. Journal of Cryptology, 33(3), 742-823.
  • Zhenzhen Bao, Chun Guo, Jian Guo, and Ling Song. (2020). TNT: How to Tweak a Block Cipher. EUROCRYPT 2020 (pp. 641-673)Zagreb, Croatia: Springer.
  • Jian Guo, Guohong Liao, Guozhen Liu, Meicheng Liu, Kexin Qiao, Ling Song. (2019). Practical Collision Attacks against Round-Reduced SHA-3. Journal of Cryptology, 2020(33), 228–270.
  • Jian Guo, Meicheng Liu, Ling Song. (2016). ASIACRYPT 2016: Linear Structures: Applications to Cryptanalysis of Round-Reduced Keccak. (pp. 249-274)Springer.
  • Jian Guo, Thomas Peyrin, Yu Sasaki, Lei Wang. (2014). CRYPTO 2014: Updates on Generic Attacks against HMAC and NMAC. (pp. 131-148)Springer.

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