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      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 AreSigsLinkable unit tests.
     20  */
     21 
     22 #include "epid/common-testhelper/epid_gtest-testhelper.h"
     23 #include "gtest/gtest.h"
     24 
     25 extern "C" {
     26 #include "epid/verifier/api.h"
     27 }
     28 
     29 #include "epid/common-testhelper/verifier_wrapper-testhelper.h"
     30 #include "epid/verifier/unittests/verifier-testhelper.h"
     31 
     32 namespace {
     33 
     34 TEST_F(EpidVerifierTest, AreSigsLinkedReturnsFalseGivenNullParameters) {
     35   auto& sig = this->kSigGrpXMember0Sha256Bsn0Msg0;
     36   EXPECT_FALSE(EpidAreSigsLinked(nullptr, nullptr));
     37   EXPECT_FALSE(EpidAreSigsLinked((BasicSignature const*)sig.data(), nullptr));
     38   EXPECT_FALSE(EpidAreSigsLinked(nullptr, (BasicSignature const*)sig.data()));
     39 }
     40 
     41 TEST_F(EpidVerifierTest, SigsBySameMemberWithRandomBaseAreNotLinkable) {
     42   auto& sig1 = this->kSigGrpXMember0Sha256RandbaseMsg0;
     43   auto& sig2 = this->kSigGrpXMember0Sha256RandbaseMsg1;
     44   EXPECT_FALSE(EpidAreSigsLinked((BasicSignature const*)sig1.data(),
     45                                  (BasicSignature const*)sig2.data()));
     46 }
     47 
     48 TEST_F(EpidVerifierTest, SigsBySameMemberWithSameBasenameAreLinkable) {
     49   auto& sig1 = this->kSigGrpXMember0Sha256Bsn0Msg0;
     50   auto& sig2 = this->kSigGrpXMember0Sha256Bsn0Msg1;
     51   EXPECT_TRUE(EpidAreSigsLinked((BasicSignature const*)sig1.data(),
     52                                 (BasicSignature const*)sig2.data()));
     53 }
     54 
     55 TEST_F(EpidVerifierTest, SigsBySameMemberWithDifferentBasenameAreNotLinkable) {
     56   auto& sig1 = this->kSigGrpXMember0Sha256Bsn0Msg0;
     57   auto& sig2 = this->kSigGrpXMember0Sha256Bsn1Msg0;
     58   EXPECT_FALSE(EpidAreSigsLinked((BasicSignature const*)sig1.data(),
     59                                  (BasicSignature const*)sig2.data()));
     60 }
     61 
     62 TEST_F(EpidVerifierTest, SigsByDifferentMembersWithSameBasenameAreNotLinkable) {
     63   auto& sig1 = this->kSigGrpXMember0Sha256Bsn0Msg0;
     64   auto& sig2 = this->kSigGrpXMember1Sha256Bsn0Msg0;
     65   EXPECT_FALSE(EpidAreSigsLinked((BasicSignature const*)sig1.data(),
     66                                  (BasicSignature const*)sig2.data()));
     67 }
     68 
     69 }  // namespace
     70