1 /*############################################################################
2 # Copyright 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 /// EpidPrivateExp unit tests.
17 /*! \file */
18 #include "epid/common-testhelper/epid_gtest-testhelper.h"
19 #include "gtest/gtest.h"
20
21 extern "C" {
22 #include "epid/member/src/privateexp.h"
23 }
24
25 #include "epid/common-testhelper/epid2params_wrapper-testhelper.h"
26 #include "epid/common-testhelper/epid_params-testhelper.h"
27 #include "epid/common-testhelper/errors-testhelper.h"
28 #include "epid/common-testhelper/prng-testhelper.h"
29 #include "epid/member/unittests/member-testhelper.h"
30
31 namespace {
32
33 ////////////////////////////////////////////////
34 // EpidPrivateExp
TEST_F(EpidMemberTest,EpidPrivateExpFailsGivenNullPointer)35 TEST_F(EpidMemberTest, EpidPrivateExpFailsGivenNullPointer) {
36 Prng my_prng;
37 Epid2ParamsObj epid2params;
38 MemberCtxObj member(&Prng::Generate, &my_prng);
39 THROW_ON_EPIDERR(EpidMemberSetHashAlg(member, kSha256));
40 THROW_ON_EPIDERR(EpidProvisionKey(member, &this->kGroupPublicKey,
41 &this->kMemberPrivateKey,
42 &this->kMemberPrecomp));
43 THROW_ON_EPIDERR(EpidMemberStartup(member));
44
45 Epid20Params params;
46 EcPointObj a(¶ms.G1, this->kGroupPublicKey.h1), r(¶ms.G1);
47
48 EXPECT_EQ(kEpidBadArgErr, EpidPrivateExp(nullptr, a, r));
49 EXPECT_EQ(kEpidBadArgErr, EpidPrivateExp(member, nullptr, r));
50 EXPECT_EQ(kEpidBadArgErr, EpidPrivateExp(member, a, nullptr));
51 }
52
TEST_F(EpidMemberTest,EpidPrivateExpFailsArgumentsMismatch)53 TEST_F(EpidMemberTest, EpidPrivateExpFailsArgumentsMismatch) {
54 Prng my_prng;
55 Epid2ParamsObj epid2params;
56 MemberCtxObj member(&Prng::Generate, &my_prng);
57 THROW_ON_EPIDERR(EpidMemberSetHashAlg(member, kSha256));
58 THROW_ON_EPIDERR(EpidProvisionKey(member, &this->kGroupPublicKey,
59 &this->kMemberPrivateKey,
60 &this->kMemberPrecomp));
61 THROW_ON_EPIDERR(EpidMemberStartup(member));
62
63 Epid20Params params;
64 EcPointObj a(¶ms.G1, this->kGroupPublicKey.h1), r(¶ms.G1);
65 EcPointObj g2(¶ms.G2, this->kGroupPublicKey.w);
66
67 EXPECT_EQ(kEpidBadArgErr, EpidPrivateExp(member, g2, r));
68 EXPECT_EQ(kEpidBadArgErr, EpidPrivateExp(member, a, g2));
69 EXPECT_EQ(kEpidBadArgErr, EpidPrivateExp(member, g2, g2));
70 }
71
TEST_F(EpidMemberTest,EpidPrivateExpSucceedsGivenValidParametersForSha256)72 TEST_F(EpidMemberTest, EpidPrivateExpSucceedsGivenValidParametersForSha256) {
73 Prng my_prng;
74 Epid2ParamsObj epid2params;
75 MemberCtxObj member(&Prng::Generate, &my_prng);
76 THROW_ON_EPIDERR(EpidMemberSetHashAlg(member, kSha256));
77 THROW_ON_EPIDERR(EpidProvisionKey(member, &this->kGroupPublicKey,
78 &this->kMemberPrivateKey,
79 &this->kMemberPrecomp));
80 THROW_ON_EPIDERR(EpidMemberStartup(member));
81
82 Epid20Params params;
83 EcPointObj a(¶ms.G1, this->kGroupPublicKey.h1), r(¶ms.G1),
84 r_expected(¶ms.G1);
85
86 G1ElemStr r_str, r_expected_str;
87
88 EXPECT_EQ(kEpidNoErr, EpidPrivateExp(member, a, r));
89
90 THROW_ON_EPIDERR(EcExp(
91 params.G1, a, (BigNumStr const*)&this->kMemberPrivateKey.f, r_expected));
92
93 THROW_ON_EPIDERR(WriteEcPoint(params.G1, r, &r_str, sizeof(r_str)));
94 THROW_ON_EPIDERR(WriteEcPoint(params.G1, r_expected, &r_expected_str,
95 sizeof(r_expected_str)));
96 EXPECT_EQ(r_expected_str, r_str);
97 }
98
99 #ifndef TPM_TSS
TEST_F(EpidMemberTest,EpidPrivateExpSucceedsGivenValidParametersForSha384)100 TEST_F(EpidMemberTest, EpidPrivateExpSucceedsGivenValidParametersForSha384) {
101 Prng my_prng;
102 Epid2ParamsObj epid2params;
103 MemberCtxObj member(&Prng::Generate, &my_prng);
104 THROW_ON_EPIDERR(EpidMemberSetHashAlg(member, kSha384));
105 THROW_ON_EPIDERR(EpidProvisionKey(member, &this->kGroupPublicKey,
106 &this->kMemberPrivateKey,
107 &this->kMemberPrecomp));
108 THROW_ON_EPIDERR(EpidMemberStartup(member));
109
110 Epid20Params params;
111 EcPointObj a(¶ms.G1, this->kGroupPublicKey.h1), r(¶ms.G1),
112 r_expected(¶ms.G1);
113
114 G1ElemStr r_str, r_expected_str;
115
116 EXPECT_EQ(kEpidNoErr, EpidPrivateExp(member, a, r));
117
118 THROW_ON_EPIDERR(EcExp(
119 params.G1, a, (BigNumStr const*)&this->kMemberPrivateKey.f, r_expected));
120
121 THROW_ON_EPIDERR(WriteEcPoint(params.G1, r, &r_str, sizeof(r_str)));
122 THROW_ON_EPIDERR(WriteEcPoint(params.G1, r_expected, &r_expected_str,
123 sizeof(r_expected_str)));
124 EXPECT_EQ(r_expected_str, r_str);
125 }
126 #endif
127
TEST_F(EpidMemberTest,PROTECTED_EpidPrivateExpSucceedsByCredentialForSha256_EPS0)128 TEST_F(EpidMemberTest,
129 PROTECTED_EpidPrivateExpSucceedsByCredentialForSha256_EPS0) {
130 Prng my_prng;
131 Epid2ParamsObj epid2params;
132 MemberCtxObj member(&Prng::Generate, &my_prng);
133 BigNumStr const f_str = {0x7a, 0x57, 0x41, 0x5b, 0x85, 0x44, 0x0e, 0x2b,
134 0xb3, 0xcc, 0xa7, 0x99, 0x6d, 0x19, 0x79, 0x45,
135 0x04, 0xb8, 0x94, 0x07, 0x47, 0x14, 0xed, 0x8d,
136 0xf4, 0x1e, 0x7d, 0xa0, 0x17, 0xc5, 0xc4, 0x10};
137 THROW_ON_EPIDERR(EpidMemberSetHashAlg(member, kSha256));
138
139 Epid20Params params;
140 EcPointObj a(¶ms.G1, this->kGroupPublicKey.h1), r(¶ms.G1),
141 r_expected(¶ms.G1);
142
143 G1ElemStr r_str, r_expected_str;
144
145 EXPECT_EQ(kEpidNoErr, EpidPrivateExp(member, a, r));
146
147 THROW_ON_EPIDERR(EcExp(params.G1, a, (BigNumStr const*)&f_str, r_expected));
148
149 THROW_ON_EPIDERR(WriteEcPoint(params.G1, r, &r_str, sizeof(r_str)));
150 THROW_ON_EPIDERR(WriteEcPoint(params.G1, r_expected, &r_expected_str,
151 sizeof(r_expected_str)));
152 EXPECT_EQ(r_expected_str, r_str);
153 }
154
155 } // namespace
156