def cbc_rt.blowfish

bend-osdev-crypto@0.1.0.0 · PROOF.bend:1350

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/blowfish.bend as Bf
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
import bend-osdev-crypto@0.1.0.0/inst_lc.bend as LC

1350def cbc_rt.blowfish(+k: Bf.LcBlowfishKey, bs: List<&2, L.LcBlock64>, +iv: L.LcBlock64) -> {bs == Md.cr.cbc.dec(~Bf.LcBlowfishKey, ~L.LcBlock64, ~Bf.LcBlowfish.decrypt, ~LC.CrBlk64.xor, k, Md.cr.cbc.enc(~Bf.LcBlowfishKey, ~L.LcBlock64, ~Bf.LcBlowfish.encrypt, ~LC.CrBlk64.xor, k, bs, iv), iv) : List<&2, L.LcBlock64>}:
1351  match bs:
1352    case Nil{}:
1353      {==}
1354    case Con{+p, t}:
1355      %Equal.sym(L.LcBlock64, Bf.LcBlowfish.decrypt(k, Bf.LcBlowfish.encrypt(k, LC.CrBlk64.xor(p, iv))), LC.CrBlk64.xor(p, iv), LL.blowfish_round_trip(k, LC.CrBlk64.xor(p, iv))) : {Con{p, t} == Con{LC.CrBlk64.xor(_, iv), Md.cr.cbc.dec(~Bf.LcBlowfishKey, ~L.LcBlock64, ~Bf.LcBlowfish.decrypt, ~LC.CrBlk64.xor, k, Md.cr.cbc.enc(~Bf.LcBlowfishKey, ~L.LcBlock64, ~Bf.LcBlowfish.encrypt, ~LC.CrBlk64.xor, k, t, Bf.LcBlowfish.encrypt(k, LC.CrBlk64.xor(p, iv))), Bf.LcBlowfish.encrypt(k, LC.CrBlk64.xor(p, iv)))} : List<&2, L.LcBlock64>}
1356      %lcblock64_xx(p, iv) : {Con{p, t} == Con{_, Md.cr.cbc.dec(~Bf.LcBlowfishKey, ~L.LcBlock64, ~Bf.LcBlowfish.decrypt, ~LC.CrBlk64.xor, k, Md.cr.cbc.enc(~Bf.LcBlowfishKey, ~L.LcBlock64, ~Bf.LcBlowfish.encrypt, ~LC.CrBlk64.xor, k, t, Bf.LcBlowfish.encrypt(k, LC.CrBlk64.xor(p, iv))), Bf.LcBlowfish.encrypt(k, LC.CrBlk64.xor(p, iv)))} : List<&2, L.LcBlock64>}
1357      %cbc_rt.blowfish(k, t, Bf.LcBlowfish.encrypt(k, LC.CrBlk64.xor(p, iv))) : {Con{p, t} == Con{p, _} : List<&2, L.LcBlock64>}
1358      {==}