J. W. Bos, M. Gourjon, J. Renes, T. Schneider, and C. van Vredendaal, “Masking Kyber: First- and Higher-Order Implementations”, TCHES, vol. 2021, no. 4, pp. 173–214, Aug. 2021, doi: 10.46586/tches.v2021.i4.173-214.