Check.cmac: def of bend-osdev-crypto@0.1.0.0
Import: import bend-osdev-crypto@0.1.0.0/check.bend as Check
Lines 229-231 of bend-osdev-crypto@0.1.0.0/check.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-crypto@0.1.0.0/check.bend&start_line=229&end_line=231

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-cipher-modes@0.1.0.0/aes.bend as X
import bend-osdev-crypto@0.1.0.0/crypto.bend as Cr
import bend-osdev-crypto@0.1.0.0/mac.bend as Mc
import bend-osdev-crypto@0.1.0.0/inst_aes.bend as A
import bend-osdev-crypto@0.1.0.0/inst_cmac.bend as CMI

def cmac(+k: B.Octets, +m: B.Octets) -> String:
  +t = Mc.CrMac.compute_with(~X.CmAesKey, ~A.CrAes.key_enc, ~CMI.CrCmac.mac(~X.CmAesKey, ~X.CmAes.encrypt), k, m)
  cat(show(t), cr.check.verify(Result.map(&2, &2, Cr.CrError, B.Octets, Bool, +tag => Result.default(&2, &2, Cr.CrError, Bool, Result.map(&2, &2, Cr.CrError, X.CmAesKey, Bool, +kk => Bool.and(CMI.CrCmac.verify(~X.CmAesKey, ~X.CmAes.encrypt, kk, m, tag), Bool.not(CMI.CrCmac.verify(~X.CmAesKey, ~X.CmAes.encrypt, kk, m, flip_last(tag)))), A.CrAes.key_enc(k)), False{}), t)))

Uses (18):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result.default
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result.map
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/aes.bend&name=CmAes.encrypt
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/aes.bend&name=CmAesKey
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/check.bend&name=cat
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/check.bend&name=cr.check.verify
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/check.bend&name=flip_last
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/check.bend&name=show
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/crypto.bend&name=CrError
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/inst_aes.bend&name=CrAes.key_enc
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/inst_cmac.bend&name=CrCmac.mac
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/inst_cmac.bend&name=CrCmac.verify
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crypto@0.1.0.0/mac.bend&name=CrMac.compute_with