PROOF.cbc_dec_tr: def of bend-osdev-crypto@0.1.0.0
Import: import bend-osdev-crypto@0.1.0.0/PROOF.bend as PROOF
Lines 300-305 of bend-osdev-crypto@0.1.0.0/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-crypto@0.1.0.0/PROOF.bend&start_line=300&end_line=305

import Base
import bend-osdev-crypto@0.1.0.0/modes.bend as Md

def cbc_dec_tr(~K: Data, ~Blk: Data, ~dec: K -> Blk -> Blk, ~bxor: Blk -> Blk -> Blk, +k: K, bs: List<&2, Blk>, +iv: Blk, +acc: List<&2, Blk>) -> {Md.cr.cbc.dec.go(~K, ~Blk, ~dec, ~bxor, k, bs, iv, acc) == Md.cr.blks.rev_onto(~Blk, acc, Md.cr.cbc.dec(~K, ~Blk, ~dec, ~bxor, k, bs, iv)) : List<&2, Blk>}:
  match bs:
    case Nil{}:
      {==}
    case Con{+c, t}:
      cbc_dec_tr(~K, ~Blk, ~dec, ~bxor, k, t, c, Con{bxor(dec(k, c), iv), acc})

Uses (4):
  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/modes.bend&name=cr.blks.rev_onto
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/modes.bend&name=cr.cbc.dec
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/modes.bend&name=cr.cbc.dec.go