• Bhishma P. Shanbhogue
• Ashwini V
• Chaitanya Lahari D
• B Balaaditya
• Steephen Raj K

This paper deals with the security of a post-quantum digital signature scheme namely Falcon, which has been standardised by NIST. Falcon relies heavily on discrete Gaussian sampling, which is susceptible to side-channel attacks, which exploit physical leakage from hardware implementations. To mitigate these attacks, MASK-Falcon, a side-channel resistant Gaussian sampler architecture for Falcon cryptography scheme is presented in this paper. The design incorporates first-order Boolean masking to prevent power analysis attacks. The suggested architecture, which exhibits masking behavior, is described in synthesizable RTL and functionally validated through simulation. For leakage-resilient Falcon implementations in post-quantum applications, MASK-Falcon offers a useful and safe hardware building block.

Post-Quantum Cryptography (PQC), Falcon, Gaussian Sampling, Side-Channel Attacks, Boolean masking

"MASK-Falcon: A Masked Gaussian Sampler for the Falcon Post-Quantum Cryptography Scheme", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 12, page no.d34-d37, December-2025, Available :http://www.jetir.org/papers/JETIR2512306.pdf

"MASK-Falcon: A Masked Gaussian Sampler for the Falcon Post-Quantum Cryptography Scheme", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 12, page no. ppd34-d37, December-2025, Available at : http://www.jetir.org/papers/JETIR2512306.pdf