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/*############################################################################
# Copyright 2016-2017 Intel Corporation
#
# 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.
############################################################################*/
/*!
* \file
* \brief DecompressPrivKey unit tests.
*/
#include <cstring>
#include "epid/common-testhelper/epid_gtest-testhelper.h"
#include "gtest/gtest.h"
extern "C" {
#include "epid/member/api.h"
}
#include "epid/member/unittests/member-testhelper.h"
bool operator==(PrivKey const& lhs, PrivKey const& rhs) {
return 0 == std::memcmp(&lhs, &rhs, sizeof(lhs));
}
namespace {
TEST_F(EpidMemberTest, DecompressPrivKeyFailsGivenNullParameters) {
auto const& pub_key = this->kGrpXKey;
auto const& compressed_privkey = this->kGrpXMember9CompressedKey;
PrivKey priv_key = {};
EXPECT_EQ(kEpidBadArgErr,
EpidDecompressPrivKey(nullptr, &compressed_privkey, &priv_key));
EXPECT_EQ(kEpidBadArgErr,
EpidDecompressPrivKey(&pub_key, nullptr, &priv_key));
EXPECT_EQ(kEpidBadArgErr,
EpidDecompressPrivKey(&pub_key, &compressed_privkey, nullptr));
}
TEST_F(EpidMemberTest, CanDecompressPrivKeyGivenValidCompressedKey) {
auto const& pub_key = this->kGrpXKey;
auto const& compressed_privkey = this->kGrpXMember9CompressedKey;
auto const& expected_decompressed_key = this->kGrpXMember9PrivKey;
PrivKey priv_key = {};
EXPECT_EQ(kEpidNoErr,
EpidDecompressPrivKey(&pub_key, &compressed_privkey, &priv_key));
EXPECT_EQ(expected_decompressed_key, priv_key);
}
TEST_F(EpidMemberTest, DecompressPrivKeyFailsGivenKeysMissmatch) {
auto const& pub_key = this->kGrpYKey;
auto const& compressed_privkey = this->kGrpXMember9CompressedKey;
PrivKey priv_key = {};
EXPECT_EQ(kEpidBadArgErr,
EpidDecompressPrivKey(&pub_key, &compressed_privkey, &priv_key));
}
TEST_F(EpidMemberTest, DecompressPrivKeyFailsGivenInvalidGroupKey) {
// Test for cases when h1 or w of group public key are invalid.
// Note h2 of group public key is not used for key decompression.
auto const& compressed_privkey = this->kGrpXMember9CompressedKey;
PrivKey priv_key = {};
auto pub_key_h1 = this->kGrpXKey;
pub_key_h1.h1.x.data.data[0]++;
EXPECT_EQ(kEpidBadArgErr,
EpidDecompressPrivKey(&pub_key_h1, &compressed_privkey, &priv_key));
auto pub_key_w = this->kGrpXKey;
pub_key_w.w.x[0].data.data[0]++;
EXPECT_EQ(kEpidBadArgErr,
EpidDecompressPrivKey(&pub_key_w, &compressed_privkey, &priv_key));
}
TEST_F(EpidMemberTest, DecompressPrivKeyFailsGivenInvalidCompressedKey) {
auto const& pub_key = this->kGrpXKey;
PrivKey priv_key = {};
auto compressed_privkey_ax = this->kGrpXMember9CompressedKey;
compressed_privkey_ax.ax.data.data[0]++;
EXPECT_EQ(kEpidBadArgErr,
EpidDecompressPrivKey(&pub_key, &compressed_privkey_ax, &priv_key));
auto compressed_privkey_seed = this->kGrpXMember9CompressedKey;
compressed_privkey_seed.seed.data[0]++;
EXPECT_EQ(kEpidBadArgErr, EpidDecompressPrivKey(
&pub_key, &compressed_privkey_seed, &priv_key));
}
} // namespace
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