Konnichiwa!
Japanese — Hello

I somehow ended up as a cryptography researcher — working on symmetric-key ciphers and automated tools like SAT and MILP solvers. I am not sure I chose this path so much as it chose me. I'm doing the work, learning as I go, and trying not to make it look harder than it is. Born and raised in West Bengal, India — still figuring out the rest.

What I Do

Places I showed up and did the work

Research Fellow Current position
Division of Mathematical Scienes, SPMS, NTU Singapore
Jan' 2025 - Present

Working with Prof. Thomas Peyrin on symmetric-key cryptanalysis and automated cryptanalysis tools at 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 cryptanalysis of stream ciphers.

What I Search

My curiosity goes to here when nobody is watching

I am learning to analyze symmetric-key ciphers such as stream ciphers, block ciphers using automated tools like SAT, MILP, CP solvers.

Research Topics

Cryptanalysis Quantum Cryptanalysis

Some 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

What I Taught

TA experience during PhD

I TA'd these courses during my PhD:

Course Course IC Period 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

What I've Learnt

Certificates of Survival

PhD in Mathematics
BITS Pilani, Hyderabad Campus, India
Class of 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

What I've Found

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