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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.
############################################################################*/
#ifndef EPID_COMMON_EPID2PARAMS_H_
#define EPID_COMMON_EPID2PARAMS_H_
/*!
* \file
* \brief Intel(R) EPID 2.0 constant parameters interface.
* \addtogroup EpidCommon
* @{
*/
#include "epid/common/math/bignum.h"
#include "epid/common/math/ecgroup.h"
#include "epid/common/math/finitefield.h"
#include "epid/common/math/pairing.h"
/// Internal representation of Epid2Params
typedef struct Epid2Params_ {
BigNum* p; ///< a prime
BigNum* q; ///< a prime
BigNum* t; ///< an integer
bool neg; ///< a boolean
FfElement* xi; ///< array of integers between [0, q-1]
EcPoint* g1; ///< a generator (an element) of G1
EcPoint* g2; ///< a generator (an element) of G2
FiniteField* Fp; ///< Finite field Fp
FiniteField* Fq; ///< Finite field Fq
FiniteField* Fq2; ///< Finite field Fq2
FiniteField* Fq6; ///< Finite field Fq6
FiniteField* GT; ///< Finite field GT(Fq12 )
EcGroup* G1; ///< Elliptic curve group over finite field Fq
EcGroup* G2; ///< Elliptic curve group over finite field Fq2
PairingState* pairing_state; ///< Pairing state
} Epid2Params_;
/// Constructs the internal representation of Epid2Params
/*!
Allocates memory for the internal representation of Epid2Params. Initialize
the Epid2Params. Use DeleteEpid2Params() to deallocate memory.
\param[in,out] params
Internal Epid2Params
\returns ::EpidStatus
\see DeleteEpid2Params
*/
EpidStatus CreateEpid2Params(Epid2Params_** params);
/// Deallocates storage for internal representation of Epid2Params
/*!
Frees the memory and nulls the pointer.
\param[in,out] epid_params
params to be deallocated
\see CreateEpid2Params
*/
void DeleteEpid2Params(Epid2Params_** epid_params);
/*! @} */
#endif // EPID_COMMON_EPID2PARAMS_H_
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