1 /*############################################################################
2 # Copyright 2016-2017 Intel Corporation
3 #
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at
7 #
8 # http://www.apache.org/licenses/LICENSE-2.0
9 #
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
15 ############################################################################*/
16
17 /*!
18 * \file
19 * \brief DecompressPrivKey unit tests.
20 */
21 #include <cstring>
22 #include "epid/common-testhelper/epid_gtest-testhelper.h"
23 #include "gtest/gtest.h"
24
25 extern "C" {
26 #include "epid/member/api.h"
27 }
28
29 #include "epid/member/unittests/member-testhelper.h"
30
operator ==(PrivKey const & lhs,PrivKey const & rhs)31 bool operator==(PrivKey const& lhs, PrivKey const& rhs) {
32 return 0 == std::memcmp(&lhs, &rhs, sizeof(lhs));
33 }
34 namespace {
35
TEST_F(EpidMemberTest,DecompressPrivKeyFailsGivenNullParameters)36 TEST_F(EpidMemberTest, DecompressPrivKeyFailsGivenNullParameters) {
37 auto const& pub_key = this->kGrpXKey;
38 auto const& compressed_privkey = this->kGrpXMember9CompressedKey;
39 PrivKey priv_key = {};
40 EXPECT_EQ(kEpidBadArgErr,
41 EpidDecompressPrivKey(nullptr, &compressed_privkey, &priv_key));
42 EXPECT_EQ(kEpidBadArgErr,
43 EpidDecompressPrivKey(&pub_key, nullptr, &priv_key));
44 EXPECT_EQ(kEpidBadArgErr,
45 EpidDecompressPrivKey(&pub_key, &compressed_privkey, nullptr));
46 }
47
TEST_F(EpidMemberTest,CanDecompressPrivKeyGivenValidCompressedKey)48 TEST_F(EpidMemberTest, CanDecompressPrivKeyGivenValidCompressedKey) {
49 auto const& pub_key = this->kGrpXKey;
50 auto const& compressed_privkey = this->kGrpXMember9CompressedKey;
51 auto const& expected_decompressed_key = this->kGrpXMember9PrivKey;
52 PrivKey priv_key = {};
53 EXPECT_EQ(kEpidNoErr,
54 EpidDecompressPrivKey(&pub_key, &compressed_privkey, &priv_key));
55 EXPECT_EQ(expected_decompressed_key, priv_key);
56 }
57
TEST_F(EpidMemberTest,DecompressPrivKeyFailsGivenKeysMissmatch)58 TEST_F(EpidMemberTest, DecompressPrivKeyFailsGivenKeysMissmatch) {
59 auto const& pub_key = this->kGrpYKey;
60 auto const& compressed_privkey = this->kGrpXMember9CompressedKey;
61 PrivKey priv_key = {};
62 EXPECT_EQ(kEpidBadArgErr,
63 EpidDecompressPrivKey(&pub_key, &compressed_privkey, &priv_key));
64 }
65
TEST_F(EpidMemberTest,DecompressPrivKeyFailsGivenInvalidGroupKey)66 TEST_F(EpidMemberTest, DecompressPrivKeyFailsGivenInvalidGroupKey) {
67 // Test for cases when h1 or w of group public key are invalid.
68 // Note h2 of group public key is not used for key decompression.
69 auto const& compressed_privkey = this->kGrpXMember9CompressedKey;
70 PrivKey priv_key = {};
71
72 auto pub_key_h1 = this->kGrpXKey;
73 pub_key_h1.h1.x.data.data[0]++;
74 EXPECT_EQ(kEpidBadArgErr,
75 EpidDecompressPrivKey(&pub_key_h1, &compressed_privkey, &priv_key));
76
77 auto pub_key_w = this->kGrpXKey;
78 pub_key_w.w.x[0].data.data[0]++;
79 EXPECT_EQ(kEpidBadArgErr,
80 EpidDecompressPrivKey(&pub_key_w, &compressed_privkey, &priv_key));
81 }
82
TEST_F(EpidMemberTest,DecompressPrivKeyFailsGivenInvalidCompressedKey)83 TEST_F(EpidMemberTest, DecompressPrivKeyFailsGivenInvalidCompressedKey) {
84 auto const& pub_key = this->kGrpXKey;
85 PrivKey priv_key = {};
86
87 auto compressed_privkey_ax = this->kGrpXMember9CompressedKey;
88 compressed_privkey_ax.ax.data.data[0]++;
89 EXPECT_EQ(kEpidBadArgErr,
90 EpidDecompressPrivKey(&pub_key, &compressed_privkey_ax, &priv_key));
91
92 auto compressed_privkey_seed = this->kGrpXMember9CompressedKey;
93 compressed_privkey_seed.seed.data[0]++;
94 EXPECT_EQ(kEpidBadArgErr, EpidDecompressPrivKey(
95 &pub_key, &compressed_privkey_seed, &priv_key));
96 }
97
98 } // namespace
99