Konnichiwa!
Japanese — Hello

I am a cryptography researcher working on the analysis and security of symmetric-key primitives. My work involves using automated tools like SAT solvers, MILP, and SMT solvers to find vulnerabilities in ciphers, alongside exploring quantum computing applications in cryptanalysis.

Work

Current and previous positions

Research Manager
School of Physical and Mathematical Sciences, NTU Singapore
Jan' 2025 - Present

Working with Prof. Thomas Peyrin on symmetric-key cryptanalysis and automated cryptanalysis tools in SYmmetric cryptography and machine Learning Lab (SyLLab).

Post-doctoral Researcher
Department of Computer Science & Engineering, IIT Madras
Oct' 2024 - Dec' 2024

Post-doctoral researcher under Prof. Santanu Sarkar focusing on differential-linear cryptanalysis of stream ciphers.

Research

Topics and publications

My research focuses on the security analysis of symmetric-key cryptographic primitives, particularly stream ciphers and block ciphers. I am learning to develop and apply automated techniques to discover vulnerabilities and improve cryptanalytic methods.

Research Topics

Differential-Linear Cryptanalysis Stream Ciphers SAT/MILP/SMT Solvers Quantum Cryptanalysis Automated Tools

Selected Publications

For the complete publication record:

View Full List on DBLP

Talks

  • Cryptanalysis of Reduced Round ChaCha - New Attack & Deeper Analysis
    FSE 2023 · Video link [slides]

Visits

Teaching

TA experience during PhD

During my PhD, I served as a Teaching Assistant for various courses. My responsibilities included conducting tutorial sessions, preparing exam questions, evaluating assignments, and helping students understand complex mathematical concepts.

Course Course IC Duration Feedback
(out of 10)
Probability and Statistics
(MATHF113 - T9)		 Prof. Sabyasachi Dey Spring 2021 9.7
Mathematics I (Advanced Calculus)(MATHF111 - T8) -- Fall 2021 Feedback not
collected
Probability and Statistics
(MATHF113 - TI)		 Prof. Sabyasachi Dey Spring 2022 7.92
Discrete Mathematics
(MATHF213 - T2)		 Prof. A Michael Alphonse Fall 2022 8.63
Graphs and Networks
(MATHF243 - TI)		 Prof. A Michael Alphonse Spring 2023 9.32
Introduction to Topology
(MATHF311 - T2)		 Prof. Sharan Gopal Fall 2023 9.69
Differential Geometry
(MATHF342 - T1)		 Prof. Sumit Kumar Vishwakarma Spring 2024 8.41

Academic

Education background

Education

Ph.D. in Mathematics
BITS Pilani, Hyderabad Campus, India
2020 - 2024 · Advisor: Prof. Sabyasachi Dey
Thesis: Study on Cryptanalysis of ARX-based Ciphers
B.Ed with method subject Mathematics
Moulana Abul Kalam Ajad Teachers' Training Institute, India
Class of 2020
MS in Mathematics
Visva-Bharati University, India
Class of 2018
BS in Mathematics
Bolpur College, India
Class of 2016
Higher Secondary School Examination, Grade 12
West Bengal Council of Higher Secondary Education, India
Class of 2013
Secondary School Examination, Grade 10
West Bengal Board of Secondary Education, India
Class of 2011

Resources

Books, playlists, notes, and articles I found useful

A small set of references that guide how I try to learn and work in cryptography. Sometimes I update this list along the way as I read and build.

Books I Liked