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/*
* Copyright (C) 2019 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.
*/
#include <stdint.h>
#include <random>
#include <gtest/gtest.h>
#include <HadamardUtils.h>
using namespace aidl::android::hardware::rebootescrow::hadamard;
class HadamardTest : public testing::Test {};
static void AddError(std::vector<uint8_t>* data) {
for (size_t i = 0; i < data->size(); i++) {
for (size_t j = 0; j < BYTE_LENGTH; j++) {
if (random() % 100 < 47) {
(*data)[i] ^= (1 << j);
}
}
}
}
TEST_F(HadamardTest, Decode_error_correction) {
constexpr auto iteration = 10;
for (int i = 0; i < iteration; i++) {
std::vector<uint8_t> key;
for (int j = 0; j < KEY_SIZE_IN_BYTES; j++) {
key.emplace_back(random() & 0xff);
}
auto encoded = EncodeKey(key);
ASSERT_EQ(64 * 1024, encoded.size());
AddError(&encoded);
auto decoded = DecodeKey(encoded);
ASSERT_EQ(key, std::vector<uint8_t>(decoded.begin(), decoded.begin() + key.size()));
}
}
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