def lc.fe.unstep

bend-osdev-legacy-ciphers@0.1.0.0 · legacy_ciphers.bend:340

import Base

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