Aranha, D. F., S. Berndt, T. Eisenbarth, O. Seker, A. Takahashi, L. Wilke, and G. Zaverucha. “Side-Channel Protections for Picnic Signatures”. IACR Transactions on Cryptographic Hardware and Embedded Systems, vol. 2021, no. 4, Aug. 2021, pp. 239-82, doi:10.46586/tches.v2021.i4.239-282.