def ecb_rt.tea

bend-osdev-crypto@0.1.0.0 · PROOF.bend:1442

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/tea.bend as Te
import bend-osdev-legacy-ciphers@0.1.0.0/LAWS.bend as LL
import bend-osdev-crypto@0.1.0.0/modes.bend as Md

1442def ecb_rt.tea(+k: Te.LcTeaKey, bs: List<&2, L.LcBlock64>) -> {bs == Md.cr.ecb(~Te.LcTeaKey, ~L.LcBlock64, ~Te.LcTea.decrypt, k, Md.cr.ecb(~Te.LcTeaKey, ~L.LcBlock64, ~Te.LcTea.encrypt, k, bs)) : List<&2, L.LcBlock64>}:
1443  match bs:
1444    case Nil{}:
1445      {==}
1446    case Con{b, t}:
1447      %Equal.sym(L.LcBlock64, Te.LcTea.decrypt(k, Te.LcTea.encrypt(k, b)), b, LL.tea_round_trip(k, b)) : {Con{b, t} == Con{_, Md.cr.ecb(~Te.LcTeaKey, ~L.LcBlock64, ~Te.LcTea.decrypt, k, Md.cr.ecb(~Te.LcTeaKey, ~L.LcBlock64, ~Te.LcTea.encrypt, k, t))} : List<&2, L.LcBlock64>}
1448      %ecb_rt.tea(k, t) : {Con{b, t} == Con{b, _} : List<&2, L.LcBlock64>}
1449      {==}