def des.step

bend-osdev-legacy-ciphers@0.1.0.0 · des.bend:247

import Base

247def des.step(k: LcDesRk, h: LcDesHalves) -> LcDesHalves:
248  match h:
249    case LcDesHalves{l, +r}:
250      LcDesHalves{r, U32.xor(l, des.f(k, r))}