Vikas Kumar

Publications

Journal Publications

  1. A. Raya, V. Kumar, S. Gangopadhyay, and A. K. Gangopadhyay. “Efficient Noncommutative KEMs from Twisted Dihedral Group Ring”. Computer Networks, 272 (2025). Link
  2. V. Kumar, A. Raya, A. K. Gangopadhyay, and S. Gangopadhyay. “Cryptanalysis of Group Ring NTRU: The Case of the Dihedral Group”. Security and Privacy, 8 (2025). Link
  3. V. Kumar, R. Das, and A. K. Gangopadhyay. “GR-NTRU: Dihedral group over ring of Eisenstein integers”. Journal of Information Security and Applications, 83 (2024), p. 103795. Link
  4. V. Kumar, B. Mandal, and A. K. Gangopadhyay. “On the Gowers U2 and U3 norms of Boolean functions and their restriction to hyperplanes”. Discrete Applied Mathematics, 341 (2023), pp. 4–8. Link
  5. A. K. Gangopadhyay, V. Kumar, Pantelimon Stănică, and S. Gangopadhyay. "Stability of the Walsh–Hadamard spectrum of cryptographic Boolean functions with biased inputs". Journal of Applied Mathematics and Computing, 69 (2023), pp. 3337-3357 Link

Conference Publications

  1. A. Raya, V. Kumar, A. K. Gangopadhyay, and S. Gangopadhyay. “Giant Does NOT Mean Strong: Cryptanalysis of BQTRU”. Post-Quantum Cryptography - PQCrypto 2025, Springer, 2025, pp. 312–348. DOI
  2. V. Kumar, A. Raya, A. K. Gangopadhyay, S. Gangopadhyay, and M. T. Hussain. “An Efficient Noncommutative NTRU from Semidirect Product”. Progress in Cryptology – INDOCRYPT 2024, Springer, 2025, pp. 3–27. DOI
  3. V. Kumar, A. Raya, A. K. Gangopadhyay, and S. Gangopadhyay. “Dimension Reduction Attack on Noncommutative Group Ring NTRU Over the Dihedral Group”. 1st International Conference On Cryptography and Information Security - VCRIS 2024, IEEE, 2024, pp. 1–6. DOI
  4. A. Raya, V. Kumar, and S. Gangopadhyay. “DiTRU: A Resurrection of NTRU over Dihedral Group”. Progress in Cryptology - AFRICACRYPT 2024, Springer, 2024, pp. 349–375. DOI
  5. A. Raya, V. Kumar, S. Gangopadhyay, and A. K. Gangopadhyay. “Results on the Key Space of Group-Ring NTRU: The Case of the Dihedral Group”. Security, Privacy, and Applied Cryptography Engineering - SPACE 2024, Springer, 2024, pp. 1–19. DOI
  6. V. Kumar, B. Mandal, A. K. Gangopadhyay, and S. Gangopadhyay. “Computational Results on Gowers U2 and U3 Norms of Known S-Boxes”. Codes, Cryptology and Information Security- C2SI 2023, Springer, 2023, pp. 150–157. DOI

Under Communication

  1. A. Raya, V. Kumar, S.O. Hwang, S. Gangopadhyay. "Almost NTRU: Revisiting Noncommutativity Against Lattice Attacks". Cryptology {ePrint} Archive, Paper 2025/1988, 2025. Link
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