| /*############################################################################ |
| # 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 EcGroup C++ wrapper implementation. |
| */ |
| #include "epid/common-testhelper/ecgroup_wrapper-testhelper.h" |
| #include "epid/common-testhelper/bignum_wrapper-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" |
| #include "epid/common/math/bignum.h" |
| |
| /// ecgroup deleter type |
| struct EcGroupDeleter { |
| /// ecgroup deleter |
| void operator()(EcGroup* ptr) { |
| if (ptr) { |
| DeleteEcGroup(&ptr); |
| } |
| } |
| }; |
| |
| /// ecgroup deleter singlton |
| EcGroupDeleter ecgroup_deleter; |
| |
| /// Internal state of the ecgroup wrapper |
| struct EcGroupObj::State { |
| /// The stored EcGroup |
| std::shared_ptr<EcGroup> group_; |
| FiniteFieldObj fintefield_; |
| |
| /// constructor |
| State() : group_(nullptr, ecgroup_deleter) {} |
| |
| // State instances are not meant to be copied. |
| // Explicitly delete copy constructor and assignment operator. |
| State(const State&) = delete; |
| State& operator=(const State&) = delete; |
| |
| /// destructor |
| ~State() {} |
| }; |
| |
| EcGroupObj::EcGroupObj() : state_(new State()) { |
| const BigNumStr q_str = { |
| {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xF0, 0xCD, 0x46, 0xE5, 0xF2, |
| 0x5E, 0xEE, 0x71, 0xA4, 0x9F, 0x0C, 0xDC, 0x65, 0xFB, 0x12, 0x98, |
| 0x0A, 0x82, 0xD3, 0x29, 0x2D, 0xDB, 0xAE, 0xD3, 0x30, 0x13}}}; |
| const FqElemStr b_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, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03}}}; |
| 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}}}; |
| const BigNumStr h1 = { |
| {{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}}}; |
| const G1ElemStr g1_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, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}}}, |
| {{{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}}}}; |
| FiniteFieldObj fq(q_str); |
| EcGroup* temp = nullptr; |
| NewEcGroup(fq, FfElementObj(&fq), FfElementObj(&fq, b_str), |
| FfElementObj(&fq, g1_str.x), FfElementObj(&fq, g1_str.y), |
| BigNumObj(p_str), BigNumObj(h1), &temp); |
| state_->group_.reset(temp, ecgroup_deleter); |
| state_->fintefield_ = fq; |
| } |
| |
| EcGroupObj::EcGroupObj(EcGroupObj const& other) : state_(new State) { |
| state_->group_ = other.state_->group_; |
| state_->fintefield_ = other.state_->fintefield_; |
| } |
| |
| EcGroupObj& EcGroupObj::operator=(EcGroupObj const& other) { |
| state_->group_ = other.state_->group_; |
| state_->fintefield_ = other.state_->fintefield_; |
| return *this; |
| } |
| |
| EcGroupObj::EcGroupObj(FiniteFieldObj* ff, FfElement const* a, |
| FfElement const* b, FfElement const* x, |
| FfElement const* y, BigNum const* order, |
| BigNum const* cofactor) |
| : state_(new State) { |
| EcGroup* temp = nullptr; |
| NewEcGroup(*ff, a, b, x, y, order, cofactor, &temp); |
| state_->group_.reset(temp, ecgroup_deleter); |
| state_->fintefield_ = *ff; |
| } |
| |
| EcGroupObj::~EcGroupObj() {} |
| |
| EcGroupObj::operator EcGroup*() { return state_->group_.get(); } |
| |
| EcGroupObj::operator const EcGroup*() const { return state_->group_.get(); } |
| |
| EcGroup* EcGroupObj::get() { return state_->group_.get(); } |
| |
| EcGroup const* EcGroupObj::getc() const { return state_->group_.get(); } |
| |
| size_t EcGroupObj::GetElementMaxSize() const { |
| return 2 * state_->fintefield_.GetElementMaxSize(); |
| } |