def pcbc_rt.camellia

bend-osdev-crypto@0.1.0.0 · PROOF.bend:985

import Base
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
import bend-osdev-legacy-ciphers@0.1.0.0/camellia.bend as Ca
import bend-osdev-legacy-ciphers@0.1.0.0/LAWS.bend as LL
import bend-osdev-crypto@0.1.0.0/pcbc.bend as Pc
import bend-osdev-crypto@0.1.0.0/inst_cm.bend as CM

985def pcbc_rt.camellia(+k: Ca.LcCamelliaKey, bs: List<&2, M.CmBlock>, +iv: M.CmBlock) -> {bs == Pc.cr.pcbc.dec(~Ca.LcCamelliaKey, ~M.CmBlock, ~Ca.LcCamellia.decrypt, ~CM.CrBlk128.xor, k, Pc.cr.pcbc.enc(~Ca.LcCamelliaKey, ~M.CmBlock, ~Ca.LcCamellia.encrypt, ~CM.CrBlk128.xor, k, bs, iv), iv) : List<&2, M.CmBlock>}:
986  match bs:
987    case Nil{}:
988      {==}
989    case Con{+p, t}:
990      %Equal.sym(M.CmBlock, Ca.LcCamellia.decrypt(k, Ca.LcCamellia.encrypt(k, CM.CrBlk128.xor(p, iv))), CM.CrBlk128.xor(p, iv), LL.camellia_round_trip(k, CM.CrBlk128.xor(p, iv))) : {Con{p, t} == Con{CM.CrBlk128.xor(_, iv), Pc.cr.pcbc.dec(~Ca.LcCamelliaKey, ~M.CmBlock, ~Ca.LcCamellia.decrypt, ~CM.CrBlk128.xor, k, Pc.cr.pcbc.enc(~Ca.LcCamelliaKey, ~M.CmBlock, ~Ca.LcCamellia.encrypt, ~CM.CrBlk128.xor, k, t, CM.CrBlk128.xor(p, Ca.LcCamellia.encrypt(k, CM.CrBlk128.xor(p, iv)))), CM.CrBlk128.xor(CM.CrBlk128.xor(_, iv), Ca.LcCamellia.encrypt(k, CM.CrBlk128.xor(p, iv))))} : List<&2, M.CmBlock>}
991      %cmblock_xx(p, iv) : {Con{p, t} == Con{_, Pc.cr.pcbc.dec(~Ca.LcCamelliaKey, ~M.CmBlock, ~Ca.LcCamellia.decrypt, ~CM.CrBlk128.xor, k, Pc.cr.pcbc.enc(~Ca.LcCamelliaKey, ~M.CmBlock, ~Ca.LcCamellia.encrypt, ~CM.CrBlk128.xor, k, t, CM.CrBlk128.xor(p, Ca.LcCamellia.encrypt(k, CM.CrBlk128.xor(p, iv)))), CM.CrBlk128.xor(_, Ca.LcCamellia.encrypt(k, CM.CrBlk128.xor(p, iv))))} : List<&2, M.CmBlock>}
992      %pcbc_rt.camellia(k, t, CM.CrBlk128.xor(p, Ca.LcCamellia.encrypt(k, CM.CrBlk128.xor(p, iv)))) : {Con{p, t} == Con{p, _} : List<&2, M.CmBlock>}
993      {==}