Talks

Invited Talks

1. CRYSTALS - Dilithium at the Workshop on Lattice-Based Cryptography in Mobile Device Security, IIT Jammu, Jammu, 22nd March, 2025.

2. LLL and Babais Nearest Plane Algorithm at the Workshop on Lattice-Based Cryptography in Mobile Device Security, IIT Jammu, Jammu, 21st March 2025.

3. Concrete Analysis of Approximate Ideal-SIVP to Decision Ring-LWE Reduction at the Workshop on Lattice-based Post-quantum Cryptography, Department of Computer Science, Ashoka University, Sonipat, 1st April 2024.

Short Course

1. Cryptanalysis Techniques for Block Ciphers.

Sub-topics:

• • Basics Of Symmetric Key Cryptanalysis

  • Slide Attack

  • Related-key Attack

  • Linear and Differential Cryptanalysis

  • Statistics in Cryptanalysis

Lecture Program for Indian Army at CDAC Noida, India, 22nd and 23rd May, 2017.

Research

1. Correlations Between (Nonlinear) Combiners of Input and Output of Random Functions and Permutations (online). At CSCML 2023, Be’er Sheva, Israel, 29th June, 2023. 

2. Distinguishing Error of Nonlinear Invariant Attacks. At INDOCRYPT 2022, Kolkata, India, 13th December, 2022.

3.  Some Randomness Experiments on Trivium. Security, Privacy, and Applied Cryptography Engineering (SPACE) 2014, Pune, India, 22nd October, 2014.

4. Fast Multiplication of the Algebraic Normal Forms of Two Boolean Functions. 8th International Workshop on Coding and Cryptography (WCC) 2013, Bergen, Norway, 17th April, 2013.

Tutorials

1. On Babai's Nearest Plane Algorithm and Collision-Resistant Hash Function. Summer Interns at R. C. Bose Center of Security and Cryptology, Kolkata, India, 23rd May, 2019.

2. On LLL-Algorithm. Summer Interns at R. C. Bose Center of Security and Cryptology, Kolkata, India, 21st May, 2019.

3. Digital Certificates and Public Key Infrastructure. Summer Interns at R. C. Bose Center of Security and Cryptology, Kolkata, India, 25th May, 2018.

4. Digital Signatures. Summer Interns at R. C. Bose Center of Security and Cryptology, Kolkata, India, 22nd May, 2018.

5. Statistics in Cryptanalysis. Summer Interns at R. C. Bose Center of Security and Cryptology, Kolkata, India, 24th May, 2017.

6. Cryptanalysis. Summer Interns at R. C. Bose Center of Security and Cryptology, Kolkata, India, 17th May, 2017.

7. Block Cipher III (Differential Cryptanalysis and Modes of Operation). The 10th National Workshop on Cryptology, Coimbatore, Tamil Nadu, India, 11th May, 2010.

8. Block Cipher II (Cryptanalysis). The 10th National Workshop on Cryptology, Coimbatore, Tamil Nadu, India, 10th May, 2010.