def aes.inv_mix

bend-osdev-cipher-modes@0.1.0.0 · aes.bend:108

import Base

108# InvMixColumns: each column times {0e, 0b, 0d, 09}, rotated per row
109def aes.inv_mix(s: CmAesState) -> CmAesState:
110  match s:
111    case CmAesState{+a0, +a1, +a2, +a3, +a4, +a5, +a6, +a7, +a8, +a9, +a10, +a11, +a12, +a13, +a14, +a15}:
112      CmAesState{aes.mix0(a0, a1, a2, a3), aes.mix0(a1, a2, a3, a0), aes.mix0(a2, a3, a0, a1), aes.mix0(a3, a0, a1, a2), aes.mix0(a4, a5, a6, a7), aes.mix0(a5, a6, a7, a4), aes.mix0(a6, a7, a4, a5), aes.mix0(a7, a4, a5, a6), aes.mix0(a8, a9, a10, a11), aes.mix0(a9, a10, a11, a8), aes.mix0(a10, a11, a8, a9), aes.mix0(a11, a8, a9, a10), aes.mix0(a12, a13, a14, a15), aes.mix0(a13, a14, a15, a12), aes.mix0(a14, a15, a12, a13), aes.mix0(a15, a12, a13, a14)}