Cast6.c6.sc: def of bend-osdev-legacy-ciphers@0.1.0.0
Import: import bend-osdev-legacy-ciphers@0.1.0.0/cast6.bend as Cast6
Lines 32-38 of bend-osdev-legacy-ciphers@0.1.0.0/cast6.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/cast6.bend&start_line=32&end_line=38

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/cast5.bend as C5

# the four steps of Q, each undone by itself
def c6.sc(k: LcCast6Ks, s: M.CmBlock) -> M.CmBlock:
  match k:
    case LcCast6Ks{m0, m1, m2, m3, r0, r1, r2, r3, t}:
      match s:
        case M.CmBlock{a, b, c, +d}:
          M.CmBlock{a, b, U32.xor(c, C5.cast.f(C5.LcCastF1{}, t, d, m0, r0)), d}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.xor
  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/cast5.bend&name=LcCastTy
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/cast5.bend&name=cast.f
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/cast6.bend&name=LcCast6Ks