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/*############################################################################
# Copyright 2016 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 ComputePreSig unit tests.
*/
#include "gtest/gtest.h"
extern "C" {
#include "epid/member/api.h"
#include "epid/member/context.h"
}
#include "epid/member/unittests/member-testhelper.h"
#include "epid/common-testhelper/prng-testhelper.h"
#include "epid/common-testhelper/errors-testhelper.h"
#include "epid/common-testhelper/finite_field_wrapper-testhelper.h"
#include "epid/common-testhelper/ffelement_wrapper-testhelper.h"
#include "epid/common-testhelper/epid_params-testhelper.h"
namespace {
TEST_F(EpidMemberTest, ComputePreSigFailsGivenNullPointer) {
Prng my_prng;
MemberCtxObj member(this->group_public_key, this->member_private_key,
this->member_precomp, &Prng::Generate, &my_prng);
PreComputedSignature presig;
EXPECT_EQ(kEpidBadArgErr, EpidComputePreSig(nullptr, &presig));
EXPECT_EQ(kEpidBadArgErr, EpidComputePreSig(member, nullptr));
}
TEST_F(EpidMemberTest,
ComputePreSigGeneratedPreComputedSignatureCanBeDeserialized) {
const BigNumStr p_str = {
{{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xF0, 0xCD, 0x46, 0xE5, 0xF2, 0x5E,
0xEE, 0x71, 0xA4, 0x9E, 0x0C, 0xDC, 0x65, 0xFB, 0x12, 0x99, 0x92, 0x1A,
0xF6, 0x2D, 0x53, 0x6C, 0xD1, 0x0B, 0x50, 0x0D}}};
Prng my_prng;
MemberCtxObj member(this->group_public_key, this->member_private_key,
this->member_precomp, &Prng::Generate, &my_prng);
PreComputedSignature presig;
EXPECT_EQ(kEpidNoErr, EpidComputePreSig(member, &presig));
Epid20Params params;
FiniteFieldObj Fp(p_str);
FfElementObj Fp_element(&Fp);
FfElementObj GT_element(¶ms.GT);
EcPointObj G1_pt(¶ms.G1);
EXPECT_EQ(kEpidNoErr,
ReadEcPoint(params.G1, &presig.B, sizeof(presig.B), G1_pt));
EXPECT_EQ(kEpidNoErr,
ReadEcPoint(params.G1, &presig.K, sizeof(presig.K), G1_pt));
EXPECT_EQ(kEpidNoErr,
ReadEcPoint(params.G1, &presig.T, sizeof(presig.T), G1_pt));
EXPECT_EQ(kEpidNoErr,
ReadEcPoint(params.G1, &presig.R1, sizeof(presig.R1), G1_pt));
EXPECT_EQ(kEpidNoErr, ReadFfElement(params.GT, &presig.R2, sizeof(presig.R2),
GT_element));
EXPECT_EQ(kEpidNoErr,
ReadFfElement(Fp, &presig.a, sizeof(presig.a), Fp_element));
EXPECT_EQ(kEpidNoErr,
ReadFfElement(Fp, &presig.b, sizeof(presig.b), Fp_element));
EXPECT_EQ(kEpidNoErr,
ReadFfElement(Fp, &presig.rx, sizeof(presig.rx), Fp_element));
EXPECT_EQ(kEpidNoErr,
ReadFfElement(Fp, &presig.rf, sizeof(presig.rf), Fp_element));
EXPECT_EQ(kEpidNoErr,
ReadFfElement(Fp, &presig.ra, sizeof(presig.ra), Fp_element));
EXPECT_EQ(kEpidNoErr,
ReadFfElement(Fp, &presig.rb, sizeof(presig.rb), Fp_element));
}
} // namespace
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