def lc.fe.unstep

bend-osdev-cipher-core@0.1.0.0 · cipher_core.bend:337

import Base

337def lc.fe.unstep(~RK: Data, ~f: RK -> U32 -> U32, k: RK, b: LcBlock64) -> LcBlock64:
338  match b:
339    case LcBlock64{+l, r}:
340      LcBlock64{U32.xor(r, f(k, l)), l}