***************** My new webpage is here.*****************

Shashank Singh
          Postdoctoral Researcher
INRIA Nancy Grand-Est
sha2nk.singh [at] gmail [dot] com
shashank.singh [at] inria [dot] fr
My GnuPG Public Key.

Present Address
251 Rue Jeanne d arc
Appartment E11bis
54000 Nancy, France

Permanent Address
Rera, Jasra,  Allahabad, Uttar Pradesh, India
Pin  212107

About me

I am a postdoctoral research fellow at INRIA, Nancy Grand-Est. Before this, I was a Visiting Scientist at the  R. C. Bose Centre for Cryptology & Security, Kolkata. I have recently completed my Ph.D. in Computer Science from the Indian Statistical Institute under the supervision of Prof. Palash Sarkar. 

Research Interest

  • Crypt-analysis and Cryptography
  • Elliptic Curve Cryptography
  • Discrete Logarithm Problem and Factorization Problem
  • Computational Number Theory
  • Abstract Algebra and Field Theory
  • Post-quantum Cryptography


  1. Palash Sarkar and Shashank Singh: "Fine Tuning the Function Field Sieve Algorithm for the Medium Prime Case", In: IEEE-it. [eprint]
  2. Palash Sarkar and Shashank Singh: "A New Method for Decomposition in the Jacobian of Small Genus Hyperelliptic Curves", In: Designs, Codes and Cryptography. [eprint]
  3. Palash Sarkar and Shashank Singh: "New Complexity Trade-Offs for the (Multiple) Number Field Sieve Algorithm in Non-Prime Fields". In: Eurocrypt-2016. [eprint]
  4. Palash Sarkar and Shashank Singh: "A Simple Method for Obtaining Relations Among Factor Basis Elements for Special Hyperelliptic Curves", In:  Applicable Algebra in Engineering, Communication and Computing. [eprint]
  5. Palash Sarkar and Shashank Singh: "On Irreducible Polynomials of the Form $b(x^d)$", preprint arXiv:1604.08303. [arXiv]
  6. Palash Sarkar and Shashank Singh: "Tower Number Field Sieve Variant of a Recent Polynomial Selection Method", Cryptology ePrint Archive: Report 2016/401. [eprint]
  7. Palash Sarkar and Shashank Singh: "A General Polynomial Selection Method and New Asymptotic Complexities for the Tower Number Field Sieve Algorithm", In: Asiacrypt 2016. [eprint]
  8. Palash Sarkar and Shashank Singh: "A Generalisation of the Conjugation Method for Polynomial Selection for the Extended Tower Number Field Sieve Algorithm", Cryptology ePrint Archive: Report 2016/537. [eprint]
  9. Alfred Menezes and Palash Sarkar and Shashank Singh: "Challenges with Assessing the Impact of NFS Advances on the Security of Pairing-based Cryptography", Cryptology ePrint Archive: Report 2016/1102. In: Mycrypt 2016. [eprint]

Please refer to my Curriculum Vitae for more information.