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// Copyright 2021, The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use diced_open_dice_cbor as dice;
use diced_sample_inputs;
use diced_utils;
use std::convert::TryInto;
mod utils;
use utils::with_connection;
// This test calls derive with an empty argument vector, then demotes the HAL using
// a set of three input values, and then calls derive with empty argument vector again.
// It then performs the same three derivation steps on the result of the former and compares
// the result to the result of the latter.
#[test]
fn demote_test() {
with_connection(|device| {
let input_values = diced_sample_inputs::get_input_values_vector();
let former = device.derive(&[]).expect("Trying to call derive.");
device
.demote(&input_values)
.expect("Trying to call demote with input values.");
let latter = device
.derive(&[])
.expect("Trying to call derive after demote.");
let artifacts = diced_utils::ResidentArtifacts::new(
former.cdiAttest[..].try_into().unwrap(),
former.cdiSeal[..].try_into().unwrap(),
&former.bcc.data,
)
.unwrap();
let input_values: Vec<diced_utils::InputValues> = input_values
.iter()
.map(|v| v.into())
.collect();
let artifacts = artifacts
.execute_steps(input_values.iter().map(|v| v as &dyn dice::InputValues))
.unwrap();
let (cdi_attest, cdi_seal, bcc) = artifacts.into_tuple();
let from_former = diced_utils::make_bcc_handover(
cdi_attest[..].try_into().unwrap(),
cdi_seal[..].try_into().unwrap(),
&bcc,
)
.unwrap();
// TODO b/204938506 when we have a parser/verifier, check equivalence rather
// than bit by bit equality.
assert_eq!(latter, from_former);
Ok(())
})
}
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