LAWS.fcrypt_pcbc_round_trip: law of bend-osdev-crypto@0.1.0.0
Import: import bend-osdev-crypto@0.1.0.0/LAWS.bend as LAWS
Lines 1142-1147 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=1142&end_line=1147

import Base
import bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend as L
import bend-osdev-legacy-ciphers@0.1.0.0/fcrypt.bend as Fc
import bend-osdev-crypto@0.1.0.0/pcbc.bend as Pc
import bend-osdev-crypto@0.1.0.0/inst_lc.bend as LC

# FCrypt (legacy-ciphers) in PCBC (pcbc.bend): decryption undoes encryption, for every key, IV and list of blocks
law fcrypt_pcbc_round_trip:
  for +k: Fc.LcFcryptKey
  for +iv: L.LcBlock64
  for +bs: List<&2, L.LcBlock64>
  {Pc.CrPcbc.decrypt_blocks(~Fc.LcFcryptKey, ~L.LcBlock64, ~Fc.LcFcrypt.decrypt, ~LC.CrBlk64.xor, k, iv, Pc.CrPcbc.encrypt_blocks(~Fc.LcFcryptKey, ~L.LcBlock64, ~Fc.LcFcrypt.encrypt, ~LC.CrBlk64.xor, k, iv, bs)) == bs : List<&2, L.LcBlock64>}

Uses (16):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/PROOF.bend&name=pcbc_dec_pub
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/PROOF.bend&name=pcbc_enc_pub
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/PROOF.bend&name=pcbc_rt.fcrypt
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/inst_lc.bend&name=CrBlk64.xor
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/pcbc.bend&name=CrPcbc.decrypt_blocks
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/pcbc.bend&name=CrPcbc.encrypt_blocks
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/pcbc.bend&name=cr.pcbc.dec
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/pcbc.bend&name=cr.pcbc.dec.go
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/pcbc.bend&name=cr.pcbc.enc
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/pcbc.bend&name=cr.pcbc.enc.go
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/fcrypt.bend&name=LcFcrypt.decrypt
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/fcrypt.bend&name=LcFcrypt.encrypt
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/fcrypt.bend&name=LcFcryptKey
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend&name=LcBlock64