Publications

Publications in reversed chronological order. Generated by jekyll-scholar.

2026

  1. Pigeonhole Equal Subset Sum: Subexponential Algorithm, Tight Lower Bounds and Average-Case Analysis
    Deepak Bhati, Pranjal Dutta, Antoine Joux, and 2 more authors
    In Submission, 2026
  2. Chosen Ciphertext Secure Pseudorandom Codes in the Standard Model
    Nico Döttling, Antoine Joux, Venkata Koppula, and 2 more authors
    In Submission, 2026
  3. Weak Pigeonhole Equal-Sums made Simpler and Faster
    Deepak Bhati, Pranjal Dutta, Antoine Joux, and 2 more authors
    In Submission, 2026

2025

  1. Separating Pseudorandom Codes from Local Oracles
    Nico Döttling, Anne Müller, and Mahesh Sreekumar Rajasree
    In Theory of Cryptography - TCC, 2025
    Outstanding Paper Award
    PDF Slides
  2. Incompressible Encryption Beyond CPA/CCA Security
    Venkata Koppula, Abhinav Kumar, Mahesh Sreekumar Rajasree, and 1 more author
    In IACR Communications in Cryptology, 2025
    PDF
  3. A Note on Adaptive Security in Hierarchical Identity-Based Encryption
    Rishab Goyal, Venkata Koppula, and Mahesh Sreekumar Rajasree
    In Advances in Cryptology - CRYPTO, 2025
    PDF Video Slides
  4. Non-Committing Identity Based Encryption: Constructions and Applications
    Rishab Goyal, Fuyuki Kitagawa, Venkata Koppula, and 3 more authors
    In Public-Key Cryptography - PKC, 2025
    PDF HTML Video Slides
  5. Incompressible Functional Encryption
    Rishab Goyal, Venkata Koppula, Mahesh Sreekumar Rajasree, and 1 more author
    In Innovations in Theoretical Computer Science - ITCS, 2025
    PDF Video Slides

2024

  1. Leakage-Resilient Key-Dependent Message Secure Encryption Schemes
    Dhairya Gupta, Mahesh Sreekumar Rajasree, and Harihar Swaminathan
    In International Conference on Cryptology in India - INDOCRYPT, 2024
    PDF HTML Video Slides
  2. Leakage-Resilient Incompressible Cryptography: Constructions and Barriers
    Kaartik Bhushan, Rishab Goyal, Venkata Koppula, and 3 more authors
    International Conference on the Theory and Application of Cryptology and Information Security - ASIACRYPT, 2024
    HTML Slides
  3. Complexity of Monomial Prediction in Cryptography and Machine Learning
    Pranjal Dutta, Mahesh Sreekumar Rajasree, and Santanu Sarkar
    In 26th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing - SYNASC, 2024
    PDF Slides
  4. On the Maximum Distance Sublattice Problem and Closest Vector Problem
    Rajendra Kumar, Shashank Mehta, and Mahesh Sreekumar Rajasree
    In 26h International Symposium on Symbolic and Numeric Algorithms for Scientific Computing - SYNASC, 2024
    PDF Slides

2023

  1. On the Variants of Subset Sum: Projected and Unbounded
    Pranjal Dutta, and Mahesh Sreekumar Rajasree
    In 25th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing - SYNASC, 2023
    PDF HTML Slides
  2. Efficient Reductions and Algorithms for Subset Product
    Pranjal Dutta, and Mahesh Sreekumar Rajasree
    In Conference on Algorithms and Discrete Applied Mathematics - CALDAM, 2023
    Best Student Presentation Award
    PDF HTML Slides

2022

  1. On the bases of Zn lattice
    Shashank Mehta, and Mahesh Sreekumar Rajasree
    In 24th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing - SYNASC, 2022
    PDF HTML Slides
  2. Algebraic Algorithms for Variants of Subset Sum
    Pranjal Dutta, and Mahesh Sreekumar Rajasree
    In Conference on Algorithms and Discrete Applied Mathematics - CALDAM, 2022
    Best Student Presentation Award
    PDF HTML
  3. Weak-keys and key-recovery attack for TinyJAMBU
    Pranjal Dutta, Mahesh Sreekumar Rajasree, and Santanu Sarkar
    Scientific Reports, 2022
    PDF
  4. On the hardness of monomial prediction and zero-sum distinguishers for Ascon
    Pranjal Dutta, Mahesh Sreekumar Rajasree, and Santanu Sarkar
    In 12th International Workshop on Coding and Cryptography - WCC, 2022
    PDF Slides

2021

  1. Efficient reductions and algorithms for variants of Subset Sum
    Pranjal Dutta, and Mahesh Sreekumar Rajasree
    arXiv, 2021
    PDF

2019

  1. Cryptanalysis of round-reduced Keccak using non-linear structures
    Mahesh Sreekumar Rajasree
    In International Conference on Cryptology in India - INDOCRYPT, 2019
    PDF Slides

2018

  1. Cryptanalysis of 1-round KECCAK
    Rajendra Kumar, Mahesh Sreekumar Rajasree, and Hoda AlKhzaimi
    In International Conference on Cryptology in Africa - AFRICACRYPT, 2018
    PDF



Manuscripts

2025

  1. Non-Committing Attribute and Identity Based Encryption: Constructions and Applications
    Rishab Goyal, Fuyuki Kitagawa, Venkata Koppula, Mahesh Sreekumar Rajasree, Ryo Nishimaki, Takashi Yamakawa
    PDF
  2. A Note on Non-Committing Encryption in the Quantum Random Oracle Model
    Anish Banerjee, Shankh Gupta, Venkata Koppula, Mahesh Sreekumar Rajasree
    PDF



Theses

2023

  1. Analysis of Symmetric-Key Cryptosystems and Subset-Sum Problem
    Mahesh Sreekumar Rajasree
    PhD Thesis, IIT Kanpur, India, 2023
    PDF
  2. New Results and Proofs in Lattice Theory
    Mahesh Sreekumar Rajasree
    MTech Thesis, IIT Kanpur, India, 2023
    PDF

2016

  1. Firewall For Preventing Anonymous Proxy Usage
    Anant Kandikuppa, Mahesh Sreekumar Rajasree, Sri Harsha Vipparti
    BTech Thesis, NIT Calicut, India, 2016
    PDF