def test_raises_after_finalize(self, backend): key = b"2b7e151628aed2a6abf7158809cf4f3c" cmac = CMAC(AES(key), backend) cmac.finalize() with pytest.raises(AlreadyFinalized): cmac.update(b"foo") with pytest.raises(AlreadyFinalized): cmac.copy() with pytest.raises(AlreadyFinalized): cmac.finalize()
def test_copy(): backend = DummyCMACBackend([AES]) copied_ctx = pretend.stub() pretend_ctx = pretend.stub(copy=lambda: copied_ctx) key = b"2b7e151628aed2a6abf7158809cf4f3c" cmac = CMAC(AES(key), backend=backend, ctx=pretend_ctx) assert cmac._backend is backend assert cmac.copy()._backend is backend
def test_copy(): @utils.register_interface(CMACBackend) class PretendBackend(object): pass pretend_backend = PretendBackend() copied_ctx = pretend.stub() pretend_ctx = pretend.stub(copy=lambda: copied_ctx) key = b"2b7e151628aed2a6abf7158809cf4f3c" cmac = CMAC(AES(key), backend=pretend_backend, ctx=pretend_ctx) assert cmac._backend is pretend_backend assert cmac.copy()._backend is pretend_backend
def test_copy_with_backend(self, backend): key = b"2b7e151628aed2a6abf7158809cf4f3c" cmac = CMAC(AES(key), backend) cmac.update(b"6bc1bee22e409f96e93d7e117393172a") copy_cmac = cmac.copy() assert cmac.finalize() == copy_cmac.finalize()