1 /*############################################################################ 2 # Copyright 2016 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 17 /*! 18 * \file 19 * \brief FiniteField C++ wrapper interface. 20 */ 21 #ifndef EPID_COMMON_TESTHELPER_FINITE_FIELD_WRAPPER_TESTHELPER_H_ 22 #define EPID_COMMON_TESTHELPER_FINITE_FIELD_WRAPPER_TESTHELPER_H_ 23 24 #include <memory> 25 #include <vector> 26 27 extern "C" { 28 #include "epid/common/math/finitefield.h" 29 } 30 31 class FfElementObj; 32 33 /*! 34 Wrapper class to provide Resource Allocation is Initialization handling 35 for FiniteField 36 */ 37 class FiniteFieldObj { 38 public: 39 /// constructor 40 FiniteFieldObj(); 41 /// copy constructor 42 FiniteFieldObj(FiniteFieldObj const& other); 43 /// assignment operator 44 FiniteFieldObj& operator=(FiniteFieldObj const& other); 45 /// Create a FiniteField 46 explicit FiniteFieldObj(BigNumStr const& prime); 47 /// Create a FiniteField 48 FiniteFieldObj(FiniteFieldObj const& ground_field, 49 FfElementObj const& ground_element, int degree); 50 /// Create a FiniteField 51 FiniteFieldObj(FiniteFieldObj const& ground_field, 52 BigNumStr const* irr_polynomial, int degree); 53 /// Destroy the FiniteField 54 ~FiniteFieldObj(); 55 /// cast operator to get the pointer to the stored FiniteField 56 operator FiniteField*(); 57 /// const cast operator to get the pointer to the stored FiniteField 58 operator const FiniteField*() const; 59 /// Get the underlying pointer 60 FiniteField* get(); 61 /// Get the underlying pointer 62 FiniteField const* getc() const; 63 /// Get maximum size of field element 64 size_t GetElementMaxSize() const; 65 66 private: 67 struct State; 68 std::unique_ptr<State> state_; 69 }; 70 71 #endif // EPID_COMMON_TESTHELPER_FINITE_FIELD_WRAPPER_TESTHELPER_H_ 72