PROOF.c6_sa2: def of bend-osdev-legacy-ciphers@0.1.0.0
Import: import bend-osdev-legacy-ciphers@0.1.0.0/PROOF.bend as PROOF
Lines 1655-1661 of bend-osdev-legacy-ciphers@0.1.0.0/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/PROOF.bend&start_line=1655&end_line=1661

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/cast6.bend as C6
import bend-osdev-legacy-ciphers@0.1.0.0/cast5.bend as C5

def c6_sa2(k: C6.LcCast6Ks, s: M.CmBlock) -> {s == C6.c6.sa(k, C6.c6.sa(k, s)) : M.CmBlock}:
  match k:
    case C6.LcCast6Ks{+m0, +m1, +m2, +m3, +r0, +r1, +r2, +r3, +t}:
      match s:
        case M.CmBlock{a, +b, c, d}:
          %u32_xx(a, C5.cast.f(C5.LcCastF3{}, t, b, m2, r2)) : {M.CmBlock{a, b, c, d} == M.CmBlock{_, b, c, d} : M.CmBlock}
          {==}

Uses (6):
  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/PROOF.bend&name=u32_xx
  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
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/cast6.bend&name=c6.sa