Welcome to the Symmetric Key and Lightweight Cryptography Lab (SyLLab) page.

We are part of the School of Physical and Mathematical Sciences of Nanyang Technological University, Singapore. The lab is led by Prof. Thomas Peyrin and its research scope is cryptography in general, with a special focus on the analysis, design and implementation of symmetric-key primitives (hash functions, block and stream ciphers, MACs, etc) and lightweight cryptography.


  • [Apr. 19] Our paper “SoK : On DFA Vulnerabilities of Substitution-Permutation Networks” accepted to AsiaCCS 2019
  • [Mar. 19] 8 submissions from SyLLab to the NIST lightweight competition:
  • [Feb. 19] Deoxys-II winner of the CAESAR competition (Portfolio “Defense in depth”)
  • [Jan. 19] Our paper “From Collisions to Chosen-Prefix Collisions - Application to Full SHA-1” accepted to Eurocrypt 2019


Thomas Peyrin
Division of Mathematical Sciences
School of Physical and Mathematical Sciences
Nanyang Technological University
SPMS-MAS-05-14, 21 Nanyang Link, Singapore 637371, Singapore
Phone: +65-65132027
E-mail: thomas.peyrin(at)ntu.edu.sg