epid/common/math/unittests/pairing-test.cc - platform/external/epid-sdk - Git at Google

 /*############################################################################
   # 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 Pairing unit tests.
  */

 #include <cstring>

 #include "epid/common-testhelper/epid_gtest-testhelper.h"
 #include "gtest/gtest.h"

 #include "epid/common-testhelper/ecgroup_wrapper-testhelper.h"
 #include "epid/common-testhelper/ecpoint_wrapper-testhelper.h"
 #include "epid/common-testhelper/epid_params-testhelper.h"
 #include "epid/common-testhelper/errors-testhelper.h"
 #include "epid/common-testhelper/ffelement_wrapper-testhelper.h"
 #include "epid/common-testhelper/finite_field_wrapper-testhelper.h"

 extern "C" {
 #include "epid/common/math/pairing.h"
 #include "epid/common/math/src/ecgroup-internal.h"
 #include "epid/common/math/src/finitefield-internal.h"
 #include "epid/common/math/src/pairing-internal.h"
 }

 /// compares Fq12ElemStr values
 bool operator==(GtElemStr const& lhs, GtElemStr const& rhs) {
   return 0 == std::memcmp(&lhs, &rhs, sizeof(lhs));
 }

 namespace {

 class PairingTest : public Epid20Params, public ::testing::Test {
  public:
   static const BigNumStr t_str;
   static const G1ElemStr ga_elem_str;
   static const G2ElemStr gb_elem_str;

   virtual void SetUp() { params = new Epid20Params(); }
   virtual void TearDown() { delete params; }

   Epid20Params* params;
 };

 const BigNumStr PairingTest::t_str = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x68, 0x82, 0xF5, 0xC0, 0x30, 0xB0, 0xA8, 0x01};

 const G1ElemStr PairingTest::ga_elem_str = {
     0xd7, 0xe2, 0xf9, 0x37, 0x21, 0x0f, 0x09, 0x97, 0x0f, 0xca, 0xa6,
     0x03, 0x7d, 0x91, 0xc3, 0x75, 0x8a, 0xc9, 0x44, 0x11, 0xfc, 0xaa,
     0x55, 0x67, 0xba, 0xce, 0xaf, 0x8d, 0xf6, 0x7c, 0x84, 0x83, 0x04,
     0xb7, 0xa6, 0xff, 0x9f, 0x0d, 0x26, 0x73, 0xaf, 0x6c, 0xd0, 0x0a,
     0xf6, 0x13, 0xc9, 0x44, 0x3f, 0xf0, 0x82, 0x58, 0x48, 0x59, 0x03,
     0x3f, 0x88, 0xe2, 0x46, 0xd6, 0x0f, 0x93, 0x42, 0x4b,
 };
 const G2ElemStr PairingTest::gb_elem_str = {
     0x3f, 0x4c, 0xb5, 0x2d, 0xbc, 0x72, 0xb0, 0x9c, 0x6f, 0xb2, 0xb5, 0xc1,
     0xdc, 0xfb, 0xda, 0x35, 0x91, 0xa6, 0x8d, 0x51, 0x37, 0x70, 0xe2, 0x17,
     0xad, 0x53, 0x23, 0xdc, 0xa3, 0xc3, 0xfd, 0x4c, 0x90, 0xfa, 0x4f, 0xa2,
     0xcb, 0x35, 0xf3, 0x50, 0x5e, 0x8e, 0xf4, 0xce, 0x7f, 0xb0, 0x8a, 0x69,
     0x49, 0xdf, 0xf5, 0x4f, 0xb0, 0xc1, 0xd7, 0xf9, 0xb8, 0xfb, 0x89, 0xd1,
     0xb6, 0xf8, 0x74, 0x04, 0xef, 0xc6, 0x60, 0x05, 0x62, 0xf3, 0x17, 0x5a,
     0x80, 0xf4, 0x4b, 0x97, 0x08, 0x3e, 0x43, 0xa1, 0x44, 0x4c, 0x54, 0x86,
     0x16, 0x20, 0xb9, 0xcc, 0xfb, 0xbd, 0x00, 0x5f, 0xc8, 0x01, 0xfb, 0x5b,
     0xc1, 0x6e, 0x2b, 0x46, 0xe2, 0x04, 0x70, 0xeb, 0xa2, 0xaa, 0x86, 0x5a,
     0x35, 0x14, 0x0e, 0xc9, 0xdf, 0xba, 0x9b, 0x6f, 0x3a, 0xca, 0x94, 0x9c,
     0x44, 0x89, 0x94, 0xa3, 0xeb, 0x61, 0x8b, 0x01,
 };
 ///////////////////////////////////////////////////////////////////////
 // NewPairingState / DeletePairingState

 // test that delete works in a "normal" valid case.
 TEST_F(PairingTest, DeleteWorksGivenNewlyCreatedPairingState) {
   PairingState* ps = nullptr;
   EpidStatus sts = kEpidNoErr;
   EXPECT_EQ(kEpidNoErr,
             NewPairingState(this->params->G1, this->params->G2,
                             this->params->GT, &this->t_str, true, &ps));
   EXPECT_EQ(kEpidNoErr, sts);
   EXPECT_NO_THROW(DeletePairingState(&ps));
 }

 // test that delete works if there is nothing to do
 TEST_F(PairingTest, DeleteWorksGivenNullPointer) {
   EXPECT_NO_THROW(DeletePairingState(nullptr));
   PairingState* ps = nullptr;
   EXPECT_NO_THROW(DeletePairingState(&ps));
 }

 // test that new succeeds with valid parameters
 TEST_F(PairingTest, NewSucceedsGivenValidParameters) {
   PairingState* ps = nullptr;
   EXPECT_EQ(kEpidNoErr,
             NewPairingState(this->params->G1, this->params->G2,
                             this->params->GT, &this->t_str, true, &ps));
   DeletePairingState(&ps);
 }

 // test that new fails if any options are NULL
 TEST_F(PairingTest, NewFailsGivenNullParameters) {
   PairingState* ps = nullptr;
   EXPECT_EQ(kEpidBadArgErr,
             NewPairingState(nullptr, this->params->G2, this->params->GT,
                             &this->t_str, true, &ps));
   DeletePairingState(&ps);
   EXPECT_EQ(kEpidBadArgErr,
             NewPairingState(this->params->G1, nullptr, this->params->GT,
                             &this->t_str, true, &ps));
   DeletePairingState(&ps);
   EXPECT_EQ(kEpidBadArgErr, NewPairingState(this->params->G1, this->params->G2,
                                             nullptr, &this->t_str, true, &ps));
   DeletePairingState(&ps);
   EXPECT_EQ(kEpidBadArgErr,
             NewPairingState(this->params->G1, this->params->G2,
                             this->params->GT, nullptr, true, &ps));
   DeletePairingState(&ps);
   EXPECT_EQ(kEpidBadArgErr,
             NewPairingState(this->params->G1, this->params->G2,
                             this->params->GT, &this->t_str, true, nullptr));
 }

 // test that new checks that G1 is valid
 TEST_F(PairingTest, NewFailsGivenInvalidG1) {
   PairingState* ps = nullptr;
   EcGroup ga;
   ga.ipp_ec = nullptr;
   ga.scratch_buffer = nullptr;
   EXPECT_EQ(kEpidBadArgErr,
             NewPairingState(&ga, this->params->G2, this->params->GT,
                             &this->t_str, true, &ps));
   DeletePairingState(&ps);
 }

 // test that new checks that G2 is valid
 TEST_F(PairingTest, NewFailsGivenInvalidG2) {
   PairingState* ps = nullptr;
   EcGroup gb;
   gb.ipp_ec = nullptr;
   gb.scratch_buffer = nullptr;
   EXPECT_EQ(kEpidBadArgErr,
             NewPairingState(this->params->G1, &gb, this->params->GT,
                             &this->t_str, true, &ps));
   DeletePairingState(&ps);
 }

 // test that new checks that GT is valid
 TEST_F(PairingTest, NewFailsGivenInvalidGT) {
   PairingState* ps = nullptr;
   FiniteField ff;
   ff.ipp_ff = nullptr;
   EXPECT_EQ(kEpidBadArgErr, NewPairingState(this->params->G1, this->params->G2,
                                             &ff, &this->t_str, true, &ps));
   DeletePairingState(&ps);
 }
 ///////////////////////////////////////////////////////////////////////
 // Pairing
 TEST_F(PairingTest, PairingWorksFromG1AndG2ToGt) {
   const bool neg = true;

   GtElemStr r_expected_str = {
       0xba, 0x10, 0x1f, 0xf6, 0x46, 0x8b, 0xe9, 0x32, 0x4f, 0xc0, 0xa5, 0x01,
       0xad, 0x5e, 0xe2, 0x31, 0x16, 0x29, 0x96, 0xed, 0xa7, 0xde, 0x4c, 0xe1,
       0xd2, 0x8d, 0x33, 0xca, 0x50, 0xab, 0x7b, 0xc6, 0x15, 0xeb, 0x79, 0xf4,
       0xeb, 0xde, 0x30, 0xb6, 0xc4, 0x07, 0x7c, 0x42, 0xcb, 0x04, 0x54, 0xf2,
       0x1f, 0x4d, 0x1f, 0xc0, 0xdf, 0xa2, 0x2b, 0x9e, 0x34, 0xc4, 0x4c, 0x84,
       0x14, 0xd3, 0x62, 0x07, 0xf1, 0x8b, 0x84, 0xd1, 0x46, 0x57, 0xb6, 0xe7,
       0x80, 0xe1, 0x46, 0x49, 0x1c, 0x0d, 0xef, 0x81, 0x31, 0xb0, 0xbe, 0x8c,
       0xb9, 0x08, 0xd0, 0xd3, 0xc4, 0x56, 0xca, 0xad, 0xf9, 0x1d, 0x75, 0x19,
       0x3f, 0xee, 0x7c, 0x43, 0xc1, 0xfa, 0x4e, 0x50, 0xb7, 0x19, 0x01, 0x00,
       0x6f, 0xd5, 0x16, 0xb6, 0xf4, 0x85, 0xe0, 0xeb, 0x2e, 0x5f, 0x0a, 0x7e,
       0xf8, 0xac, 0xbc, 0x05, 0xec, 0x73, 0xb5, 0x57, 0xe3, 0xb3, 0x18, 0x29,
       0xbb, 0xef, 0x86, 0x50, 0x87, 0xcf, 0x70, 0xba, 0x13, 0x8b, 0xb1, 0xb6,
       0x2d, 0x6f, 0x65, 0x3d, 0xa1, 0x0b, 0xe3, 0x92, 0xc5, 0x72, 0x86, 0x6a,
       0xb3, 0xeb, 0xe0, 0xe5, 0xda, 0x0e, 0x57, 0x87, 0xd5, 0xa9, 0x61, 0xa5,
       0x1e, 0xcb, 0x04, 0x86, 0xcd, 0xc3, 0x18, 0x2a, 0x36, 0xa0, 0x81, 0x73,
       0xe7, 0x13, 0x87, 0x80, 0x8d, 0x1a, 0xfe, 0x6e, 0x4b, 0xa3, 0x13, 0x03,
       0x66, 0x9e, 0x80, 0x4d, 0x8a, 0xaa, 0x00, 0x95, 0x72, 0xce, 0xbb, 0x51,
       0xe8, 0x01, 0x09, 0x41, 0xd3, 0x63, 0x28, 0x05, 0xa4, 0xbe, 0xd6, 0x41,
       0xa6, 0x2f, 0x5f, 0xbf, 0x0b, 0x13, 0xb4, 0x54, 0x5b, 0x50, 0x65, 0xdc,
       0x6f, 0x29, 0xd6, 0xda, 0xbf, 0xc2, 0x06, 0xea, 0x3b, 0xb2, 0xf1, 0xd4,
       0x26, 0x5c, 0x92, 0x6b, 0x95, 0x6d, 0x88, 0xab, 0x8f, 0xc6, 0x9d, 0x31,
       0xe4, 0x9b, 0x71, 0x49, 0xe0, 0xce, 0x97, 0x8f, 0xc9, 0x9f, 0xbc, 0xa8,
       0x4a, 0xc6, 0xaa, 0x4a, 0xc8, 0x0d, 0x2a, 0x60, 0x1a, 0x43, 0x40, 0x03,
       0xb3, 0x53, 0x30, 0x98, 0x1f, 0x3f, 0xdf, 0x5c, 0x0f, 0xf0, 0x84, 0x8e,
       0x5a, 0x5d, 0x41, 0xd2, 0x47, 0x78, 0x6d, 0x9f, 0x89, 0xce, 0xf5, 0x8e,
       0xb6, 0x54, 0xa2, 0x26, 0xe5, 0x40, 0x39, 0x5c, 0x59, 0x08, 0xb3, 0xda,
       0xf5, 0xf8, 0xa0, 0x18, 0x33, 0x57, 0xd1, 0x72, 0xbb, 0xba, 0x6c, 0xed,
       0xe8, 0xa0, 0x5e, 0xc8, 0x81, 0xc5, 0xac, 0x15, 0x1b, 0xd0, 0xe6, 0xc8,
       0x92, 0xf9, 0x43, 0x03, 0x5a, 0x00, 0x42, 0xe3, 0x49, 0xa5, 0xf7, 0x19,
       0x78, 0x8a, 0x39, 0x89, 0x32, 0xae, 0xbf, 0x4d, 0x4b, 0xb3, 0x33, 0x76,
       0x16, 0xfd, 0x0b, 0xfe, 0x42, 0x1e, 0x17, 0x37, 0x2a, 0x04, 0xea, 0x26,
       0xba, 0x6e, 0x2c, 0x36, 0xaf, 0x35, 0x1b, 0x75, 0x6d, 0x17, 0xdc, 0x8e,
   };

   GtElemStr r_str = {0};

   FfElementObj r(&this->params->GT);
   EcPointObj ga_elem(&this->params->G1, this->ga_elem_str);
   EcPointObj gb_elem(&this->params->G2, this->gb_elem_str);

   PairingState* ps = nullptr;
   THROW_ON_EPIDERR(NewPairingState(this->params->G1, this->params->G2,
                                    this->params->GT, &this->t_str, neg, &ps));
   EXPECT_EQ(kEpidNoErr, Pairing(ps, ga_elem, gb_elem, r));
   DeletePairingState(&ps);

   THROW_ON_EPIDERR(WriteFfElement(this->params->GT, r, &r_str, sizeof(r_str)));
   EXPECT_EQ(r_expected_str, r_str);
 }
 // test that pairing fails if any options are NULL
 TEST_F(PairingTest, PairingFailsGivenNullParameters) {
   const bool neg = true;

   FfElementObj r(&this->params->GT);
   EcPointObj ga_elem(&this->params->G1, this->ga_elem_str);
   EcPointObj gb_elem(&this->params->G2, this->gb_elem_str);

   PairingState* ps = nullptr;
   THROW_ON_EPIDERR(NewPairingState(this->params->G1, this->params->G2,
                                    this->params->GT, &this->t_str, neg, &ps));
   EXPECT_EQ(kEpidBadArgErr, Pairing(NULL, ga_elem, gb_elem, r));
   EXPECT_EQ(kEpidBadArgErr, Pairing(ps, NULL, gb_elem, r));
   EXPECT_EQ(kEpidBadArgErr, Pairing(ps, ga_elem, NULL, r));
   EXPECT_EQ(kEpidBadArgErr, Pairing(ps, ga_elem, gb_elem, NULL));
   DeletePairingState(&ps);
 }
 // test that pairing checks that the first parameter of the pairing is in a
 // EcGroup, that was used to create pairing state.
 TEST_F(PairingTest, PairingFailsGivenInvalidGaElem) {
   const bool neg = true;

   FfElementObj r(&this->params->GT);
   // put G2 element instead of G1
   EcPointObj mismatched_ga_elem(&this->params->G2, this->gb_elem_str);
   EcPointObj gb_elem(&this->params->G2, this->gb_elem_str);
   PairingState* ps = nullptr;
   THROW_ON_EPIDERR(NewPairingState(this->params->G1, this->params->G2,
                                    this->params->GT, &this->t_str, neg, &ps));
   EXPECT_EQ(kEpidBadArgErr, Pairing(ps, mismatched_ga_elem, gb_elem, r));
   DeletePairingState(&ps);
 }
 // test that pairing checks that the second parameter of the pairing is in a
 // EcGroup, that was used to create pairing state.
 TEST_F(PairingTest, PairingFailsGivenInvalidGbElem) {
   const bool neg = true;

   FfElementObj r(&this->params->GT);
   EcPointObj ga_elem(&this->params->G1, this->ga_elem_str);
   // put G1 element instead of G2
   EcPointObj mismatched_gb_elem(&this->params->G1, this->ga_elem_str);
   PairingState* ps = nullptr;
   THROW_ON_EPIDERR(NewPairingState(this->params->G1, this->params->G2,
                                    this->params->GT, &this->t_str, neg, &ps));
   EXPECT_EQ(kEpidBadArgErr, Pairing(ps, ga_elem, mismatched_gb_elem, r));
   DeletePairingState(&ps);
 }
 }  // namespace
	/*############################################################################
	# 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 Pairing unit tests.
	*/

	#include <cstring>

	#include "epid/common-testhelper/epid_gtest-testhelper.h"
	#include "gtest/gtest.h"

	#include "epid/common-testhelper/ecgroup_wrapper-testhelper.h"
	#include "epid/common-testhelper/ecpoint_wrapper-testhelper.h"
	#include "epid/common-testhelper/epid_params-testhelper.h"
	#include "epid/common-testhelper/errors-testhelper.h"
	#include "epid/common-testhelper/ffelement_wrapper-testhelper.h"
	#include "epid/common-testhelper/finite_field_wrapper-testhelper.h"

	extern "C" {
	#include "epid/common/math/pairing.h"
	#include "epid/common/math/src/ecgroup-internal.h"
	#include "epid/common/math/src/finitefield-internal.h"
	#include "epid/common/math/src/pairing-internal.h"
	}

	/// compares Fq12ElemStr values
	bool operator==(GtElemStr const& lhs, GtElemStr const& rhs) {
	return 0 == std::memcmp(&lhs, &rhs, sizeof(lhs));
	}

	namespace {

	class PairingTest : public Epid20Params, public ::testing::Test {
	public:
	static const BigNumStr t_str;
	static const G1ElemStr ga_elem_str;
	static const G2ElemStr gb_elem_str;

	virtual void SetUp() { params = new Epid20Params(); }
	virtual void TearDown() { delete params; }

	Epid20Params* params;
	};

	const BigNumStr PairingTest::t_str = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x68, 0x82, 0xF5, 0xC0, 0x30, 0xB0, 0xA8, 0x01};

	const G1ElemStr PairingTest::ga_elem_str = {
	0xd7, 0xe2, 0xf9, 0x37, 0x21, 0x0f, 0x09, 0x97, 0x0f, 0xca, 0xa6,
	0x03, 0x7d, 0x91, 0xc3, 0x75, 0x8a, 0xc9, 0x44, 0x11, 0xfc, 0xaa,
	0x55, 0x67, 0xba, 0xce, 0xaf, 0x8d, 0xf6, 0x7c, 0x84, 0x83, 0x04,
	0xb7, 0xa6, 0xff, 0x9f, 0x0d, 0x26, 0x73, 0xaf, 0x6c, 0xd0, 0x0a,
	0xf6, 0x13, 0xc9, 0x44, 0x3f, 0xf0, 0x82, 0x58, 0x48, 0x59, 0x03,
	0x3f, 0x88, 0xe2, 0x46, 0xd6, 0x0f, 0x93, 0x42, 0x4b,
	};
	const G2ElemStr PairingTest::gb_elem_str = {
	0x3f, 0x4c, 0xb5, 0x2d, 0xbc, 0x72, 0xb0, 0x9c, 0x6f, 0xb2, 0xb5, 0xc1,
	0xdc, 0xfb, 0xda, 0x35, 0x91, 0xa6, 0x8d, 0x51, 0x37, 0x70, 0xe2, 0x17,
	0xad, 0x53, 0x23, 0xdc, 0xa3, 0xc3, 0xfd, 0x4c, 0x90, 0xfa, 0x4f, 0xa2,
	0xcb, 0x35, 0xf3, 0x50, 0x5e, 0x8e, 0xf4, 0xce, 0x7f, 0xb0, 0x8a, 0x69,
	0x49, 0xdf, 0xf5, 0x4f, 0xb0, 0xc1, 0xd7, 0xf9, 0xb8, 0xfb, 0x89, 0xd1,
	0xb6, 0xf8, 0x74, 0x04, 0xef, 0xc6, 0x60, 0x05, 0x62, 0xf3, 0x17, 0x5a,
	0x80, 0xf4, 0x4b, 0x97, 0x08, 0x3e, 0x43, 0xa1, 0x44, 0x4c, 0x54, 0x86,
	0x16, 0x20, 0xb9, 0xcc, 0xfb, 0xbd, 0x00, 0x5f, 0xc8, 0x01, 0xfb, 0x5b,
	0xc1, 0x6e, 0x2b, 0x46, 0xe2, 0x04, 0x70, 0xeb, 0xa2, 0xaa, 0x86, 0x5a,
	0x35, 0x14, 0x0e, 0xc9, 0xdf, 0xba, 0x9b, 0x6f, 0x3a, 0xca, 0x94, 0x9c,
	0x44, 0x89, 0x94, 0xa3, 0xeb, 0x61, 0x8b, 0x01,
	};
	///////////////////////////////////////////////////////////////////////
	// NewPairingState / DeletePairingState

	// test that delete works in a "normal" valid case.
	TEST_F(PairingTest, DeleteWorksGivenNewlyCreatedPairingState) {
	PairingState* ps = nullptr;
	EpidStatus sts = kEpidNoErr;
	EXPECT_EQ(kEpidNoErr,
	NewPairingState(this->params->G1, this->params->G2,
	this->params->GT, &this->t_str, true, &ps));
	EXPECT_EQ(kEpidNoErr, sts);
	EXPECT_NO_THROW(DeletePairingState(&ps));
	}

	// test that delete works if there is nothing to do
	TEST_F(PairingTest, DeleteWorksGivenNullPointer) {
	EXPECT_NO_THROW(DeletePairingState(nullptr));
	PairingState* ps = nullptr;
	EXPECT_NO_THROW(DeletePairingState(&ps));
	}

	// test that new succeeds with valid parameters
	TEST_F(PairingTest, NewSucceedsGivenValidParameters) {
	PairingState* ps = nullptr;
	EXPECT_EQ(kEpidNoErr,
	NewPairingState(this->params->G1, this->params->G2,
	this->params->GT, &this->t_str, true, &ps));
	DeletePairingState(&ps);
	}

	// test that new fails if any options are NULL
	TEST_F(PairingTest, NewFailsGivenNullParameters) {
	PairingState* ps = nullptr;
	EXPECT_EQ(kEpidBadArgErr,
	NewPairingState(nullptr, this->params->G2, this->params->GT,
	&this->t_str, true, &ps));
	DeletePairingState(&ps);
	EXPECT_EQ(kEpidBadArgErr,
	NewPairingState(this->params->G1, nullptr, this->params->GT,
	&this->t_str, true, &ps));
	DeletePairingState(&ps);
	EXPECT_EQ(kEpidBadArgErr, NewPairingState(this->params->G1, this->params->G2,
	nullptr, &this->t_str, true, &ps));
	DeletePairingState(&ps);
	EXPECT_EQ(kEpidBadArgErr,
	NewPairingState(this->params->G1, this->params->G2,
	this->params->GT, nullptr, true, &ps));
	DeletePairingState(&ps);
	EXPECT_EQ(kEpidBadArgErr,
	NewPairingState(this->params->G1, this->params->G2,
	this->params->GT, &this->t_str, true, nullptr));
	}

	// test that new checks that G1 is valid
	TEST_F(PairingTest, NewFailsGivenInvalidG1) {
	PairingState* ps = nullptr;
	EcGroup ga;
	ga.ipp_ec = nullptr;
	ga.scratch_buffer = nullptr;
	EXPECT_EQ(kEpidBadArgErr,
	NewPairingState(&ga, this->params->G2, this->params->GT,
	&this->t_str, true, &ps));
	DeletePairingState(&ps);
	}

	// test that new checks that G2 is valid
	TEST_F(PairingTest, NewFailsGivenInvalidG2) {
	PairingState* ps = nullptr;
	EcGroup gb;
	gb.ipp_ec = nullptr;
	gb.scratch_buffer = nullptr;
	EXPECT_EQ(kEpidBadArgErr,
	NewPairingState(this->params->G1, &gb, this->params->GT,
	&this->t_str, true, &ps));
	DeletePairingState(&ps);
	}

	// test that new checks that GT is valid
	TEST_F(PairingTest, NewFailsGivenInvalidGT) {
	PairingState* ps = nullptr;
	FiniteField ff;
	ff.ipp_ff = nullptr;
	EXPECT_EQ(kEpidBadArgErr, NewPairingState(this->params->G1, this->params->G2,
	&ff, &this->t_str, true, &ps));
	DeletePairingState(&ps);
	}
	///////////////////////////////////////////////////////////////////////
	// Pairing
	TEST_F(PairingTest, PairingWorksFromG1AndG2ToGt) {
	const bool neg = true;

	GtElemStr r_expected_str = {
	0xba, 0x10, 0x1f, 0xf6, 0x46, 0x8b, 0xe9, 0x32, 0x4f, 0xc0, 0xa5, 0x01,
	0xad, 0x5e, 0xe2, 0x31, 0x16, 0x29, 0x96, 0xed, 0xa7, 0xde, 0x4c, 0xe1,
	0xd2, 0x8d, 0x33, 0xca, 0x50, 0xab, 0x7b, 0xc6, 0x15, 0xeb, 0x79, 0xf4,
	0xeb, 0xde, 0x30, 0xb6, 0xc4, 0x07, 0x7c, 0x42, 0xcb, 0x04, 0x54, 0xf2,
	0x1f, 0x4d, 0x1f, 0xc0, 0xdf, 0xa2, 0x2b, 0x9e, 0x34, 0xc4, 0x4c, 0x84,
	0x14, 0xd3, 0x62, 0x07, 0xf1, 0x8b, 0x84, 0xd1, 0x46, 0x57, 0xb6, 0xe7,
	0x80, 0xe1, 0x46, 0x49, 0x1c, 0x0d, 0xef, 0x81, 0x31, 0xb0, 0xbe, 0x8c,
	0xb9, 0x08, 0xd0, 0xd3, 0xc4, 0x56, 0xca, 0xad, 0xf9, 0x1d, 0x75, 0x19,
	0x3f, 0xee, 0x7c, 0x43, 0xc1, 0xfa, 0x4e, 0x50, 0xb7, 0x19, 0x01, 0x00,
	0x6f, 0xd5, 0x16, 0xb6, 0xf4, 0x85, 0xe0, 0xeb, 0x2e, 0x5f, 0x0a, 0x7e,
	0xf8, 0xac, 0xbc, 0x05, 0xec, 0x73, 0xb5, 0x57, 0xe3, 0xb3, 0x18, 0x29,
	0xbb, 0xef, 0x86, 0x50, 0x87, 0xcf, 0x70, 0xba, 0x13, 0x8b, 0xb1, 0xb6,
	0x2d, 0x6f, 0x65, 0x3d, 0xa1, 0x0b, 0xe3, 0x92, 0xc5, 0x72, 0x86, 0x6a,
	0xb3, 0xeb, 0xe0, 0xe5, 0xda, 0x0e, 0x57, 0x87, 0xd5, 0xa9, 0x61, 0xa5,
	0x1e, 0xcb, 0x04, 0x86, 0xcd, 0xc3, 0x18, 0x2a, 0x36, 0xa0, 0x81, 0x73,
	0xe7, 0x13, 0x87, 0x80, 0x8d, 0x1a, 0xfe, 0x6e, 0x4b, 0xa3, 0x13, 0x03,
	0x66, 0x9e, 0x80, 0x4d, 0x8a, 0xaa, 0x00, 0x95, 0x72, 0xce, 0xbb, 0x51,
	0xe8, 0x01, 0x09, 0x41, 0xd3, 0x63, 0x28, 0x05, 0xa4, 0xbe, 0xd6, 0x41,
	0xa6, 0x2f, 0x5f, 0xbf, 0x0b, 0x13, 0xb4, 0x54, 0x5b, 0x50, 0x65, 0xdc,
	0x6f, 0x29, 0xd6, 0xda, 0xbf, 0xc2, 0x06, 0xea, 0x3b, 0xb2, 0xf1, 0xd4,
	0x26, 0x5c, 0x92, 0x6b, 0x95, 0x6d, 0x88, 0xab, 0x8f, 0xc6, 0x9d, 0x31,
	0xe4, 0x9b, 0x71, 0x49, 0xe0, 0xce, 0x97, 0x8f, 0xc9, 0x9f, 0xbc, 0xa8,
	0x4a, 0xc6, 0xaa, 0x4a, 0xc8, 0x0d, 0x2a, 0x60, 0x1a, 0x43, 0x40, 0x03,
	0xb3, 0x53, 0x30, 0x98, 0x1f, 0x3f, 0xdf, 0x5c, 0x0f, 0xf0, 0x84, 0x8e,
	0x5a, 0x5d, 0x41, 0xd2, 0x47, 0x78, 0x6d, 0x9f, 0x89, 0xce, 0xf5, 0x8e,
	0xb6, 0x54, 0xa2, 0x26, 0xe5, 0x40, 0x39, 0x5c, 0x59, 0x08, 0xb3, 0xda,
	0xf5, 0xf8, 0xa0, 0x18, 0x33, 0x57, 0xd1, 0x72, 0xbb, 0xba, 0x6c, 0xed,
	0xe8, 0xa0, 0x5e, 0xc8, 0x81, 0xc5, 0xac, 0x15, 0x1b, 0xd0, 0xe6, 0xc8,
	0x92, 0xf9, 0x43, 0x03, 0x5a, 0x00, 0x42, 0xe3, 0x49, 0xa5, 0xf7, 0x19,
	0x78, 0x8a, 0x39, 0x89, 0x32, 0xae, 0xbf, 0x4d, 0x4b, 0xb3, 0x33, 0x76,
	0x16, 0xfd, 0x0b, 0xfe, 0x42, 0x1e, 0x17, 0x37, 0x2a, 0x04, 0xea, 0x26,
	0xba, 0x6e, 0x2c, 0x36, 0xaf, 0x35, 0x1b, 0x75, 0x6d, 0x17, 0xdc, 0x8e,
	};

	GtElemStr r_str = {0};

	FfElementObj r(&this->params->GT);
	EcPointObj ga_elem(&this->params->G1, this->ga_elem_str);
	EcPointObj gb_elem(&this->params->G2, this->gb_elem_str);

	PairingState* ps = nullptr;
	THROW_ON_EPIDERR(NewPairingState(this->params->G1, this->params->G2,
	this->params->GT, &this->t_str, neg, &ps));
	EXPECT_EQ(kEpidNoErr, Pairing(ps, ga_elem, gb_elem, r));
	DeletePairingState(&ps);

	THROW_ON_EPIDERR(WriteFfElement(this->params->GT, r, &r_str, sizeof(r_str)));
	EXPECT_EQ(r_expected_str, r_str);
	}
	// test that pairing fails if any options are NULL
	TEST_F(PairingTest, PairingFailsGivenNullParameters) {
	const bool neg = true;

	FfElementObj r(&this->params->GT);
	EcPointObj ga_elem(&this->params->G1, this->ga_elem_str);
	EcPointObj gb_elem(&this->params->G2, this->gb_elem_str);

	PairingState* ps = nullptr;
	THROW_ON_EPIDERR(NewPairingState(this->params->G1, this->params->G2,
	this->params->GT, &this->t_str, neg, &ps));
	EXPECT_EQ(kEpidBadArgErr, Pairing(NULL, ga_elem, gb_elem, r));
	EXPECT_EQ(kEpidBadArgErr, Pairing(ps, NULL, gb_elem, r));
	EXPECT_EQ(kEpidBadArgErr, Pairing(ps, ga_elem, NULL, r));
	EXPECT_EQ(kEpidBadArgErr, Pairing(ps, ga_elem, gb_elem, NULL));
	DeletePairingState(&ps);
	}
	// test that pairing checks that the first parameter of the pairing is in a
	// EcGroup, that was used to create pairing state.
	TEST_F(PairingTest, PairingFailsGivenInvalidGaElem) {
	const bool neg = true;

	FfElementObj r(&this->params->GT);
	// put G2 element instead of G1
	EcPointObj mismatched_ga_elem(&this->params->G2, this->gb_elem_str);
	EcPointObj gb_elem(&this->params->G2, this->gb_elem_str);
	PairingState* ps = nullptr;
	THROW_ON_EPIDERR(NewPairingState(this->params->G1, this->params->G2,
	this->params->GT, &this->t_str, neg, &ps));
	EXPECT_EQ(kEpidBadArgErr, Pairing(ps, mismatched_ga_elem, gb_elem, r));
	DeletePairingState(&ps);
	}
	// test that pairing checks that the second parameter of the pairing is in a
	// EcGroup, that was used to create pairing state.
	TEST_F(PairingTest, PairingFailsGivenInvalidGbElem) {
	const bool neg = true;

	FfElementObj r(&this->params->GT);
	EcPointObj ga_elem(&this->params->G1, this->ga_elem_str);
	// put G1 element instead of G2
	EcPointObj mismatched_gb_elem(&this->params->G1, this->ga_elem_str);
	PairingState* ps = nullptr;
	THROW_ON_EPIDERR(NewPairingState(this->params->G1, this->params->G2,
	this->params->GT, &this->t_str, neg, &ps));
	EXPECT_EQ(kEpidBadArgErr, Pairing(ps, ga_elem, mismatched_gb_elem, r));
	DeletePairingState(&ps);
	}
	} // namespace