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 17 /*! 18 * \file 19 * \brief Finite field private interface. 20 */ 21 22 #ifndef EPID_COMMON_MATH_SRC_FINITEFIELD_INTERNAL_H_ 23 #define EPID_COMMON_MATH_SRC_FINITEFIELD_INTERNAL_H_ 24 25 #include "epid/common/math/bignum.h" 26 #include "epid/common/math/src/bignum-internal.h" 27 #include "ext/ipp/include/ippcp.h" 28 29 /// Finite Field 30 struct FiniteField { 31 /// Internal implementation of finite field 32 IppsGFpState* ipp_ff; 33 /// Previous finitefield 34 struct FiniteField* ground_ff; 35 /// Degree of basic field 36 int basic_degree; 37 /// Degree of current field 38 int ground_degree; 39 /// Size of element in BNU units 40 int element_len; 41 /// Minimum number of bytes needed to serialize an element 42 size_t element_strlen_required; 43 /*! 44 Galois field prime or free standing coefficient of 45 irreducible polynomial of finite field extension. 46 */ 47 BigNum* modulus_0; 48 }; 49 50 /// Finite Field Element 51 struct FfElement { 52 /// Internal implementation of finite field element 53 IppsGFpElement* ipp_ff_elem; 54 /// Element size of Finite Field element 55 int element_len; 56 /// Degree of Finite Field element 57 int degree; 58 }; 59 60 EpidStatus SetFfElementOctString(ConstOctStr ff_elem_str, int strlen, 61 struct FfElement* ff_elem, 62 struct FiniteField* ff); 63 64 #endif // EPID_COMMON_MATH_SRC_FINITEFIELD_INTERNAL_H_ 65
