1 /*############################################################################ 2 # Copyright 2016-2017 Intel Corporation 3 # 4 # Licensed under the Apache License, Version 2.0 (the "License"); 5 # you may not use this file except in compliance with the License. 6 # You may obtain a copy of the License at 7 # 8 # http://www.apache.org/licenses/LICENSE-2.0 9 # 10 # Unless required by applicable law or agreed to in writing, software 11 # distributed under the License is distributed on an "AS IS" BASIS, 12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 # See the License for the specific language governing permissions and 14 # limitations under the License. 15 ############################################################################*/ 16 #ifndef EPID_COMMON_SRC_EPID2PARAMS_H_ 17 #define EPID_COMMON_SRC_EPID2PARAMS_H_ 18 /*! 19 * \file 20 * \brief Intel(R) EPID 2.0 constant parameters interface. 21 * \addtogroup EpidCommon 22 * @{ 23 */ 24 #include "epid/common/math/bignum.h" 25 #include "epid/common/math/ecgroup.h" 26 #include "epid/common/math/finitefield.h" 27 #include "epid/common/math/pairing.h" 28 29 /// Internal representation of Epid2Params 30 typedef struct Epid2Params_ { 31 BigNum* p; ///< a prime 32 BigNum* q; ///< a prime 33 FfElement* b; ///< an integer between [0, q-1] 34 BigNum* t; ///< an integer 35 bool neg; ///< a boolean 36 FfElement* xi; ///< array of integers between [0, q-1] 37 EcPoint* g1; ///< a generator (an element) of G1 38 EcPoint* g2; ///< a generator (an element) of G2 39 40 FiniteField* Fp; ///< Finite field Fp 41 42 FiniteField* Fq; ///< Finite field Fq 43 FiniteField* Fq2; ///< Finite field Fq2 44 FiniteField* Fq6; ///< Finite field Fq6 45 FiniteField* GT; ///< Finite field GT(Fq12 ) 46 47 EcGroup* G1; ///< Elliptic curve group over finite field Fq 48 EcGroup* G2; ///< Elliptic curve group over finite field Fq2 49 50 PairingState* pairing_state; ///< Pairing state 51 } Epid2Params_; 52 53 /// Constructs the internal representation of Epid2Params 54 /*! 55 Allocates memory for the internal representation of Epid2Params. Initialize 56 the Epid2Params. Use DeleteEpid2Params() to deallocate memory. 57 58 \param[in,out] params 59 Internal Epid2Params 60 61 \returns ::EpidStatus 62 \see DeleteEpid2Params 63 */ 64 EpidStatus CreateEpid2Params(Epid2Params_** params); 65 /// Deallocates storage for internal representation of Epid2Params 66 /*! 67 Frees the memory and nulls the pointer. 68 69 \param[in,out] epid_params 70 params to be deallocated 71 72 \see CreateEpid2Params 73 */ 74 void DeleteEpid2Params(Epid2Params_** epid_params); 75 /*! @} */ 76 #endif // EPID_COMMON_SRC_EPID2PARAMS_H_ 77
