Cheng, H., Großschädl, J., Marshall, B., Page, D. and Pham, T. (2022) “RISC-V Instruction Set Extensions for Lightweight Symmetric Cryptography”, IACR Transactions on Cryptographic Hardware and Embedded Systems, 2023(1), pp. 193–237. doi: 10.46586/tches.v2023.i1.193-237.