DROPS

Document

DOI: 10.4230/LIPIcs.ITC.2026.9

Resilience of Inner-Product Masking Scheme Against Hamming Weight Leakage

Authors: Aniruddha Biswas, Jihun Hwang, Hemanta K. Maji, and Xiuyu Ye

Published in: LIPIcs, Volume 385, 7th Conference on Information-Theoretic Cryptography (ITC 2026)

Abstract

Additive masking is a widely used countermeasure against side-channel attacks in which a secret is additively split into multiple random shares. However, over binary fields, the number of 1’s in the binary representation (i.e., the Hamming weight) of the shares reveals information about the original secret. Inner-product masking scheme has been proposed as a promising alternative that is secure against such information leakage. In this work, we establish that inner-product masking over a binary extension field is provably secure against Hamming weight leakage, and it translates into security against arbitrary symmetric function leakage from the shares. In addition, we present an efficiently computable score function that quantifies its security against leakages, enabling users to test and certify its security. Finally, we derive a relationship between the leakage resilience of inner-product masking and additive masking over arbitrary fields; roughly speaking, they are at least as secure as additive masking. Our approach is Fourier-analytic and involves estimating spectral norms of the Hamming slice by studying Krawtchouk polynomials.

Cite as

Aniruddha Biswas, Jihun Hwang, Hemanta K. Maji, and Xiuyu Ye. Resilience of Inner-Product Masking Scheme Against Hamming Weight Leakage. In 7th Conference on Information-Theoretic Cryptography (ITC 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 385, pp. 9:1-9:23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

Copy BibTex To Clipboard

@InProceedings{biswas_et_al:LIPIcs.ITC.2026.9,
  author =	{Biswas, Aniruddha and Hwang, Jihun and Maji, Hemanta K. and Ye, Xiuyu},
  title =	{{Resilience of Inner-Product Masking Scheme Against Hamming Weight Leakage}},
  booktitle =	{7th Conference on Information-Theoretic Cryptography (ITC 2026)},
  pages =	{9:1--9:23},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-426-0},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{385},
  editor =	{Dodis, Yevgeniy},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ITC.2026.9},
  URN =		{urn:nbn:de:0030-drops-271023},
  doi =		{10.4230/LIPIcs.ITC.2026.9},
  annote =	{Keywords: Local leakage resilience, additive masking, inner product masking, Hamming weight leakage, Fourier analysis, Krawtchouk polynomials}
}

Search Results

Documents authored by Biswas, Aniruddha

Resilience of Inner-Product Masking Scheme Against Hamming Weight Leakage

Abstract

Cite as

Thanks for your feedback!

Could not send message