Publications

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

  1. Weak Pigeonhole Equal-Sums made Simpler and Faster
    Deepak Bhati, Pranjal Dutta, Antoine Joux, and 2 more authors
    Under Submission, 2026
  2. A Simple Compiler for CCA2-Secure Pseudorandom Codes in the Standard Model
    Nico Döttling, Antoine Joux, Venkata Koppula, and 2 more authors
    Under Submission, 2026
    PDF
  1. On Robust Combiners for Pseudorandom Codes and PKE with Pseudorandom Ciphertexts
    Nico Döttling, Venkata Koppula, Mahesh Sreekumar Rajasree, and 1 more author
    In Theory of Cryptography - TCC, 2026
  2. Pigeonhole Equal Subset Sum: Subexponential Algorithm, Tight Lower Bounds, and Average-Case Analysis
    Deepak Bhati, Pranjal Dutta, Antoine Joux, and 2 more authors
    In Foundations of Computer Science - FOCS, 2026
  3. Chosen Ciphertext Secure Pseudorandom Codes in the Standard Model
    Nico Döttling, Antoine Joux, Venkata Koppula, and 2 more authors
    In Advances in Cryptology - CRYPTO, 2026
    PDF Slides

    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

      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 26th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing - SYNASC, 2024
        PDF Slides

        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

          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

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

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

                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

                2026

                1. Quantum Pseudorandom Codes
                  Nico Döttling, Anne Müller, and Mahesh Sreekumar Rajasree
                  Manuscript, 2026

                2025

                1. Non-Committing Attribute and Identity Based Encryption: Constructions and Applications
                  Rishab Goyal, Fuyuki Kitagawa, Venkata Koppula, and 3 more authors
                  Manuscript, 2025
                  PDF
                2. A Note on Non-Committing Encryption in the Quantum Random Oracle Model
                  Anish Banerjee, Shankh Gupta, Venkata Koppula, and 1 more author
                  Manuscript, 2025
                  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, and Sri Harsha Vipparti
                  BTech Thesis, NIT Calicut, India, 2016
                  PDF