B. Marshall, G. R. . Newell, D. Page, M.-J. O. . Saarinen, and C. Wolf, “The design of scalar AES Instruction Set Extensions for RISC-V”, TCHES, vol. 2021, no. 1, pp. 109–136, Dec. 2020, doi: 10.46586/tches.v2021.i1.109-136.