LAWS.ctr_involution: law of bend-osdev-crypto@0.1.0.0
Import: import bend-osdev-crypto@0.1.0.0/LAWS.bend as LAWS
Lines 110-118 of bend-osdev-crypto@0.1.0.0/LAWS.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-crypto@0.1.0.0/LAWS.bend&start_line=110&end_line=118

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-crypto@0.1.0.0/stream.bend as St
import bend-osdev-crypto@0.1.0.0/modes.bend as Md

law ctr_involution:
  for ~K: Data
  for ~Blk: Data
  for ~enc: K -> Blk -> Blk
  for ~blk_of: B.Octets -> Maybe<&2, Blk>
  for ~blk_to: Blk -> B.Octets
  for +s: Md.CrCtrState<K>
  for +m: B.Octets
  {St.CrXor.out_data(~Md.CrCtrState<K>, Md.CrCtr.update(~K, ~Blk, ~enc, ~blk_of, ~blk_to, s, St.CrXor.out_data(~Md.CrCtrState<K>, Md.CrCtr.update(~K, ~Blk, ~enc, ~blk_of, ~blk_to, s, m)))) == m : B.Octets}

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/LAWS.bend&name=xor_involution
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/modes.bend&name=CrCtr.next
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/modes.bend&name=CrCtr.update
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/modes.bend&name=CrCtrState
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/stream.bend&name=CrXor.out_data