Dr. Francesco Sica

Assistant Professor

Science Building (SE-43), Room #270









  • Ph.D. in Mathematics, McGill University, Canada, 1998
  • M.Sc. in Mathematics, Scuola Normale Superiore, Italy, 1993
  • B.Sc. in Mathematics, University of Pisa, Italy, 1993

Research Interests

  • Public-key cryptography
  • Mathematical cryptology 
  • Number Theory

Research Description

After a PhD in analytic number theory, I joined a crypto lab at the National University of Singapore and then a crypto group at the Université catholique de Louvain in Belgium where I worked on the NESSIE project to provide a scientific evaluation of cryptographic primitives in view of their future use in European standards.

My research interests have centered around elliptic curve cryptography, mostly in implementation issues, but recently also in their security (isogeny problem with torsion). I have also published on the use of elliptic curves in pseudorandom number generation, and in multistorage solutions on elliptic curves.

I am also working on integer factorization and am more generally interested in computational problems with a strong number theoretical flavor.

Recent Publications

  • Francesco Sica, Factoring with Hints, Journal of Mathematical Cryptology 15, pp. 123-130 (2021).
  • Xinxin Fan, Guang Gong, Berry Schoenmakers, Francesco Sica, Andrey Sidorenko, Secure Simultaneous Bit Extraction from Koblitz Curves, Designs, Codes and Cryptography, 87, pp. 1-13 (2019).
  • Xinxin Fan, Adilet Otemissov, Francesco Sica and Andrey Sidorenko, Multiple Point Compression on Elliptic Curves, Designs, Codes and Cryptography, 83, pp. 565-588 (2017).
  • Patrick Longa and Francesco Sica, Four-Dimensional Gallant-Lambert-Vanstone Scalar Multiplication, Journal of Cryptology, 27 (2), pp. 248-283 (2014).