Hrithik Nandi

Research

I am working in the area of symmetric key cryptography with a special focus on provable security. My research interest primarily includes the design and analysis of symmetric-key cryptographic schemes, design and security analysis of symmetric modes, authenticated encryption, cryptanalysis of primitives etc. I am currently exploring the post-quantum security of symmetric-key cryptographic schemes.

Publications and Preprints

Paper Name and Author(s) Publication Venue Link(s)
Rugged Pseudorandom Permutations with Beyond-Birthday-Bound Security
N. Datta, J. P. Degabriele, A. Dutta, V. Karadžić, H. Nandi
ASIACCS 2026
How to Build a Short-Input Random Oracle from Public Random Permutations
R. Bhaumik, N. Datta, A. Dutta, A. Jha, S. Mandal, B. Mennink, H. Nandi, Y. Shen
EUROCRYPT 2026
HCTR+: An Optimally Secure TBC-based Accordion Mode
N. Datta, A. Dutta, S. Ghosh, E. List, H. Nandi
IACR ToSC 2025
Sequential Indifferentiability of STH and EDM
N. Datta, A. Dutta, S. Mandal, H. Nandi
IACR CiC 2025
Efficient Variants of TNT with BBB Security
R. Bhaumik, W. Choi, A. Dutta, C. M. López, H. Nandi, Y. Shen
ProvSec 2024
Post-Quantum Security of Keyed Sum of Permutations and Its Siblings
N. Datta, A. Dutta, S. Mandal, H. Nandi, A. Sinha
Preprint
Committing Security of BBB Secure MACs
S. Mandal, H. Nandi, A. Sinha
Preprint
Naor-Reingold goes Beyond-the-Birthday-Bound
A. Chakraborti, B. Chakraborty, N. Datta, A. Dutta, A. Jha, S. Mandal, H. Nandi, M. Nandi, A. Saha
Preprint

** The author list follows alphabetical order by surname.