Sm4.sm4.unrounds: def of bend-osdev-legacy-ciphers@0.1.0.0
Import: import bend-osdev-legacy-ciphers@0.1.0.0/sm4.bend as Sm4
Lines 78-83 of bend-osdev-legacy-ciphers@0.1.0.0/sm4.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/sm4.bend&start_line=78&end_line=83

import Base
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
import bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend as L

def sm4.unrounds(+tab: L.LcTab, rks: List<&2, U32>, s: M.CmBlock) -> M.CmBlock:
  match rks:
    case Nil{}:
      s
    case Con{k, t}:
      sm4.unstep(tab, k, sm4.unrounds(tab, t, s))

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=CmBlock
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend&name=LcTab
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/sm4.bend&name=sm4.unstep