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/*############################################################################
# Copyright 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.
############################################################################*/
/// Tiny NrProve unit tests.
/*! \file */
#ifndef SHARED
#include "epid/common-testhelper/epid_gtest-testhelper.h"
#include "epid/member/tiny/unittests/member-testhelper.h"
#include "gtest/gtest.h"
extern "C" {
#include "epid/member/tiny/src/native_types.h"
#include "epid/member/tiny/src/nrprove.h"
#include "epid/member/tiny/src/serialize.h"
#include "epid/member/tiny/src/signbasic.h"
}
#include "epid/common-testhelper/errors-testhelper.h"
#include "epid/common-testhelper/prng-testhelper.h"
#include "epid/common-testhelper/verifier_wrapper-testhelper.h"
namespace {
TEST_F(EpidMemberTest, NrProveFailsGivenInvalidSigRlEntry) {
Prng my_prng;
MemberCtxObj member(this->kGroupPublicKey, this->kMemberPrivateKey,
this->kMemberPrecomp, &Prng::Generate, &my_prng);
auto msg = this->kTest1Msg;
SigRl const* sig_rl = reinterpret_cast<const SigRl*>(this->kSigRlData.data());
NrProof proof;
// make sure that can generate NrProof using incorrupt sig_rl_enty
THROW_ON_EPIDERR(EpidNrProve(member, msg.data(), msg.size(), &this->kBasicSig,
&sig_rl->bk[0], &proof));
SigRlEntry sig_rl_enty_invalid_k = sig_rl->bk[0];
sig_rl_enty_invalid_k.k.x.data.data[31]++; // make it not in EC group
EXPECT_EQ(kEpidBadArgErr,
EpidNrProve(member, msg.data(), msg.size(), &this->kBasicSig,
&sig_rl_enty_invalid_k, &proof));
SigRlEntry sig_rl_enty_invalid_b = sig_rl->bk[0];
sig_rl_enty_invalid_b.b.x.data.data[31]++; // make it not in EC group
EXPECT_EQ(kEpidBadArgErr,
EpidNrProve(member, msg.data(), msg.size(), &this->kBasicSig,
&sig_rl_enty_invalid_b, &proof));
}
TEST_F(EpidMemberTest, NrProveFailsGivenInvalidBasicSig) {
Prng my_prng;
MemberCtxObj member(this->kGroupPublicKey, this->kMemberPrivateKey,
this->kMemberPrecomp, &Prng::Generate, &my_prng);
auto msg = this->kTest1Msg;
SigRl const* sig_rl = reinterpret_cast<const SigRl*>(this->kSigRlData.data());
NrProof proof;
// make sure that can generate NrProof using incorrupt basic sig
THROW_ON_EPIDERR(EpidNrProve(member, msg.data(), msg.size(), &this->kBasicSig,
&sig_rl->bk[0], &proof));
// invalid basic sig is only when K value is invalid!!
NativeBasicSignature basic_sig_invalid_K = this->kBasicSig;
basic_sig_invalid_K.K.x.limbs.word[0]++; // make it not in EC group
EXPECT_EQ(kEpidBadArgErr,
EpidNrProve(member, msg.data(), msg.size(), &basic_sig_invalid_K,
&sig_rl->bk[0], &proof));
}
TEST_F(EpidMemberTest, GeneratesNrProofForEmptyMessage) {
Prng my_prng;
MemberCtxObj member(this->kGroupPublicKey, this->kMemberPrivateKey,
this->kMemberPrecomp, &Prng::Generate, &my_prng);
BasicSignature basic_sig;
SigRl const* sig_rl = reinterpret_cast<const SigRl*>(this->kSigRlData.data());
NrProof proof;
EXPECT_EQ(kEpidNoErr, EpidNrProve(member, nullptr, 0, &this->kBasicSig,
&sig_rl->bk[0], &proof));
BasicSignatureSerialize(&basic_sig, &this->kBasicSig);
// Check proof by doing an NrVerify
VerifierCtxObj ctx(this->kGroupPublicKey);
EXPECT_EQ(kEpidNoErr,
EpidNrVerify(ctx, &basic_sig, nullptr, 0, &sig_rl->bk[0], &proof));
}
TEST_F(EpidMemberTest, GeneratesNrProofForMsgContainingAllPossibleBytes) {
Prng my_prng;
MemberCtxObj member(this->kGroupPublicKey, this->kMemberPrivateKey,
this->kMemberPrecomp, &Prng::Generate, &my_prng);
BasicSignature basic_sig;
auto msg = this->kData_0_255;
SigRl const* sig_rl = reinterpret_cast<const SigRl*>(this->kSigRlData.data());
NrProof proof;
EXPECT_EQ(kEpidNoErr, EpidNrProve(member, msg.data(), msg.size(),
&this->kBasicSig, &sig_rl->bk[0], &proof));
// Check proof by doing an NrVerify
BasicSignatureSerialize(&basic_sig, &this->kBasicSig);
VerifierCtxObj ctx(this->kGroupPublicKey);
EXPECT_EQ(kEpidNoErr, EpidNrVerify(ctx, &basic_sig, msg.data(), msg.size(),
&sig_rl->bk[0], &proof));
}
TEST_F(EpidMemberTest, GeneratesNrProof) {
Prng my_prng;
MemberCtxObj member(this->kGroupPublicKey, this->kMemberPrivateKey,
this->kMemberPrecomp, &Prng::Generate, &my_prng);
BasicSignature basic_sig;
auto msg = this->kTest1Msg;
SigRl const* sig_rl = reinterpret_cast<const SigRl*>(this->kSigRlData.data());
NrProof proof;
EXPECT_EQ(kEpidNoErr, EpidNrProve(member, msg.data(), msg.size(),
&this->kBasicSig, &sig_rl->bk[0], &proof));
// Check proof by doing an NrVerify
BasicSignatureSerialize(&basic_sig, &this->kBasicSig);
VerifierCtxObj ctx(this->kGroupPublicKey);
EXPECT_EQ(kEpidNoErr, EpidNrVerify(ctx, &basic_sig, msg.data(), msg.size(),
&sig_rl->bk[0], &proof));
}
TEST_F(EpidMemberTest, GeneratesNrProofUsingSha512) {
Prng my_prng;
MemberCtxObj member(this->kGroupPublicKey, this->kMemberPrivateKey,
this->kMemberPrecomp, &Prng::Generate, &my_prng);
BasicSignature basic_sig;
auto msg = this->kTest1Msg;
SigRl const* sig_rl = reinterpret_cast<const SigRl*>(this->kSigRlData.data());
THROW_ON_EPIDERR(EpidMemberSetHashAlg(member, kSha512));
NrProof proof;
EXPECT_EQ(kEpidNoErr, EpidNrProve(member, msg.data(), msg.size(),
&this->kBasicSig, &sig_rl->bk[0], &proof));
// Check proof by doing an NrVerify
BasicSignatureSerialize(&basic_sig, &this->kBasicSig);
VerifierCtxObj ctx(this->kGroupPublicKey);
EXPECT_EQ(kEpidNoErr, EpidNrVerify(ctx, &basic_sig, msg.data(), msg.size(),
&sig_rl->bk[0], &proof));
}
TEST_F(EpidMemberTest, GeneratesNrProofUsingSha256) {
Prng my_prng;
MemberCtxObj member(this->kGroupPublicKey, this->kMemberPrivateKey,
this->kMemberPrecomp, &Prng::Generate, &my_prng);
BasicSignature basic_sig;
auto msg = this->kTest1Msg;
SigRl const* sig_rl = reinterpret_cast<const SigRl*>(this->kSigRlData.data());
THROW_ON_EPIDERR(EpidMemberSetHashAlg(member, kSha256));
NrProof proof;
EXPECT_EQ(kEpidNoErr, EpidNrProve(member, msg.data(), msg.size(),
&this->kBasicSig, &sig_rl->bk[0], &proof));
// Check proof by doing an NrVerify
BasicSignatureSerialize(&basic_sig, &this->kBasicSig);
VerifierCtxObj ctx(this->kGroupPublicKey);
THROW_ON_EPIDERR(EpidVerifierSetHashAlg(ctx, kSha256));
EXPECT_EQ(kEpidNoErr, EpidNrVerify(ctx, &basic_sig, msg.data(), msg.size(),
&sig_rl->bk[0], &proof));
}
} // namespace
#endif // SHARED
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