1 /*############################################################################ 2 # Copyright 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 /// Host signing helper APIs 17 /*! \file */ 18 #ifndef EPID_MEMBER_SRC_SIGN_COMMITMENT_H_ 19 #define EPID_MEMBER_SRC_SIGN_COMMITMENT_H_ 20 21 #include <stddef.h> 22 #include "epid/common/errors.h" 23 #include "epid/common/types.h" // HashAlg 24 25 #pragma pack(1) 26 /// Result of Sign Commit 27 typedef struct SignCommitOutput { 28 G1ElemStr B; ///< B value for signature 29 G1ElemStr K; ///< K value for signature 30 G1ElemStr T; ///< T value for signature 31 G1ElemStr R1; ///< Serialized G1 element 32 GtElemStr R2; ///< Serialized GT element 33 } SignCommitOutput; 34 #pragma pack() 35 36 typedef struct SignCommitOutput SignCommitOutput; 37 38 /// \cond 39 typedef struct FiniteField FiniteField; 40 typedef struct FpElemStr FpElemStr; 41 /// \endcond 42 43 /// Calculates commitment hash of sign commit 44 /*! 45 46 \param[in] Fp 47 The finite field. 48 49 \param[in] hash_alg 50 The hash algorithm. 51 52 \param[in] commit_out 53 The output from the sign commit. 54 55 \param[in] msg 56 The message. 57 58 \param[in] msg_len 59 The size of message in bytes. 60 61 \param[out] c_str 62 The resulting commitment hash. 63 64 \returns ::EpidStatus 65 66 */ 67 EpidStatus HashSignCommitment(FiniteField* Fp, HashAlg hash_alg, 68 GroupPubKey const* pub_key, 69 SignCommitOutput const* commit_out, 70 void const* msg, size_t msg_len, 71 FpElemStr* c_str); 72 73 #endif // EPID_MEMBER_SRC_SIGN_COMMITMENT_H_ 74
