def cbc_enc_ref

bend-osdev-legacy-ciphers@0.1.0.0 · PROOF.bend:8608

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/modes64.bend as X

8608def cbc_enc_ref(~K: Data, ~enc: K -> L.LcBlock64 -> L.LcBlock64, +k: K, bs: List<&2, L.LcBlock64>, +iv: L.LcBlock64, +acc: List<&2, L.LcBlock64>) -> {X.m64.cbc.enc.go(~K, ~enc, k, bs, iv, acc) == X.m64.rev_onto(acc, X.m64.cbc.enc(~K, ~enc, k, bs, iv)) : List<&2, L.LcBlock64>}:
8609  match bs:
8610    case Nil{}:
8611      {==}
8612    case Con{+p, t}:
8613      cbc_enc_ref(~K, ~enc, k, t, enc(k, L.LcBlock64.xor(iv, p)), Con{enc(k, L.LcBlock64.xor(iv, p)), acc})