def checkpoint_changed_ciphertext_rejected

qasim-bend-kit@0.1.0.2 · proof/AES_NistTamperVectorProof.bend:108

import Base
import qasim-bend-kit@0.1.0.2/libs/AES256GCM.bend as AES
import qasim-bend-kit@0.1.0.2/proof/AES_NistKeyScheduleProof.bend as Key
import qasim-bend-kit@0.1.0.2/proof/AES_NistObservationProof.bend as Obs

108def checkpoint_changed_ciphertext_rejected() ->
109    {Obs.decrypt_expanded(Key.words_60(), changed_ciphertext_aad(), changed_ciphertext_envelope()) == Fail{AES.AuthenticationFailed{}} : Result<&2, &2, AES.Error, List<&2, U32>>}:
110    Obs.finish_auth(Key.words_60(), changed_ciphertext_aad(), changed_ciphertext_envelope(),
111        changed_ciphertext_computed_tag(), False{}, Fail{AES.AuthenticationFailed{}},
112        checkpoint_changed_ciphertext_tag(), {==}, {==})