Number-theoretic transformations in public key encryption
*M. ThamizhsudarCorresponding authorthamizhsudar@avit.ac.inDepartment of Humanities and Sciences (Mathematics Division)Aarupadai Veedu Institute of TechnologyVinayaka Mission’s Research Foundation (Deemed to be University)Paiyanoor, Chennai, Tamil Nadu, 603104, IndiaView full profile → , Tanveer Ahmad Wanitanveer.ahmad@niu.edu.inDepartment of PhysicsNoida International UniversityGreater Noida, Uttar Pradesh, 203201, IndiaView full profile → , Savinder Kaursavinder.kaur.orp@chitkara.edu.inCentre for Research Impact and OutcomeChitkara UniversityRajpura, Punjab, 140417, IndiaView full profile → , Mahendihasan S. Heeramahendihasan.gcca@gokuluniversity.ac.inFaculty of Computer Science and ApplicationsGokul Global UniversitySidhpur, Gujarat, 384151, IndiaView full profile → , B. Anandkumaranand1710@vardhaman.orgDepartment of Computer Science and EngineeringVardhaman College of EngineeringShamshabad, Hyderabad, Telangana, 501218, IndiaView full profile → , Vella Satyanarayanaasece_vella@adityauniversity.inDepartment of Electronics and Communication EngineeringAditya UniversitySurampalem, Kakinada District, Andhra Pradesh, 533437, IndiaView full profile →
* Corresponding author · click or hover a name for details
- Received:
- 01 Apr 2026
- Published Online:
- 31 Oct 2026
- Article type:
- Research Article
- Language:
- EN
- Article no.:
- JDMSC-3042
- Pages:
- 4179–4188
Abstract
NTTs have proven to be an important calculator in modern public key encryption, particularly in lattice-based and post-quantum cryptography. Mathematical backgrounds and algorithms implementations of NTTs in the context of efficient arithmetic of polynomials over finite field are discussed in this paper. The study addresses the flaws of the conventional convolution algorithms, and suggests simplified Cooley Tukey founded NTT algorithms, which can translate to a lot when it comes to computational complexity. Additionally, it also talks about how NTT can be integrated into the environment of algebraic structures (rings and modules) so as to enable safe and dimensionless encryption. Benchmarking at the experimental level demonstrates the improvements in the computational efficiency, as much as 45 per cent reduction in the processing time as compared to the traditional methods. The results introduce better throughput, reduced latency and capability to run in resource limited environments.
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References
[1] J. Huang, C. Kuo, S. Liu, and T. Su, “An area-efficient and configurable number theoretic transform accelerator for homomorphic encryption,” Electronics, vol. 13, no. 17, Art. no. 3382 (2024), doi: 10.3390/electronics13173382.
[2] H. Seo, H. Kwon, Y. Kwon, K. Kim, S. Choi, H. Kim, and K. Jang, “Fast number theoretic transform for Ring-LWE on 8-bit AVR embedded processor,” Sensors, vol. 20, no. 7, Art. no. 2039 (2020), doi: 10.3390/s20072039.
[3] B. Kieu-Do-Nguyen, N. The Binh, C. Pham-Quoc, H. P. Nghi, N.-T. Tran, T.-T. Hoang, and C.-K. Pham, “Compact and low-latency FPGA-based number theoretic transform architecture for CRYSTALS Kyber postquantum cryptography scheme,” Information, vol. 15, no. 7, Art. no. 400 (2024), doi: 10.3390/info15070400.
[4] G. Kim, E. Seo, Y. Lee, Y.-S. Kim, and J.-S. No, “Lazy modular reduction for NTT,” Electronics, vol. 13, no. 24, Art. no. 4887 (2024), doi: 10.3390/electronics13244887.
[5] O. Wardak, S. Kumar, and D. Sinha, “Encryption and decryption scheme through signed Cayley graph,” J. Discrete Math. Sci. Cryptogr., vol. 28, no. 7, pp. 2811–2825 (2025), doi: 10.47974/JDMSC-2201.
[6] T. T. Nguyen, T. T. B. Nguyen, and H. Lee, “An analysis of hardware design of MLWE-based public-key encryption and key-establishment algorithms,” Electronics, vol. 11, no. 6, Art. no. 891 (2022), doi: 10.3390/electronics11060891.
[7] C. Zhang, Y. Liang, A. Tavares, L. Wang, T. Gomes, and S. Pinto, “An improved public key cryptographic algorithm based on Chebyshev polynomials and RSA,” Symmetry, vol. 16, no. 3, Art. no. 263 (2024), doi: 10.3390/sym16030263.
[8] R. Gangarde, A. Julian, M. S. Murali Dhar, G. I. Mary, M. Rele, and M. Vaithianathan, “Applications of partial differential equations and Green’s functions in climate change modeling,” J. Interdiscip. Math., vol. 28, no. 6, pp. 2079–2088 (2025), doi: 10.47974/JIM-2349.
[9] O. S. Sonbul, M. Rashid, and A. Y. Jaffar, “Accelerating CRYSTALS-Kyber: High-speed NTT design with optimized pipelining and modular reduction,” Electronics, vol. 14, no. 11, Art. no. 2122 (2025), doi: 10.3390/electronics14112122.
[10] D. C. Lawo, R. Abu Bakar, A. Cano Aguilera, F. Cugini, J. L. Imaña, I. Tafur Monroy, and J. J. Vegas Olmos, “Wireless and fiber-based post-quantum-cryptography-secured IPsec tunnel,” Future Internet, vol. 16, no. 8, Art. no. 300 (2024), doi: 10.3390/fi16080300.
[11] M. Kasianchuk, R. Shevchuk, B. Adamyk, V. Benson, I. Shylinska, and M. Holembiovskyi, “Affine cipher encryption technique using residue number system,” Cryptography, vol. 9, no. 2, Art. no. 26 (2025), doi: 10.3390/cryptography9020026.
[12] Y. Cheng, Y. Liu, Z. Zhang, and Y. Li, “An asymmetric encryption-based key distribution method for wireless sensor networks,” Sensors, vol. 23, no. 14, Art. no. 6460 (2023), doi: 10.3390/s23146460.
[13] R. C. Poonia, T. Singh, C. K. Rajashri, D. Mondal, and S. M. Patil, “Optimizing communication system security through comprehensive testing and intelligent network configurations,” J. Inf. Optim. Sci., vol. 47, no. 5-A, pp. 1709–1717 (2026), doi: 10.47974/JIOS-2261.




