1 /* 2 * This file is part of the openHiTLS project. 3 * 4 * openHiTLS is licensed under the Mulan PSL v2. 5 * You can use this software according to the terms and conditions of the Mulan PSL v2. 6 * You may obtain a copy of Mulan PSL v2 at: 7 * 8 * http://license.coscl.org.cn/MulanPSL2 9 * 10 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, 11 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, 12 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. 13 * See the Mulan PSL v2 for more details. 14 */ 15 16 #ifndef BN_UCAL_H 17 #define BN_UCAL_H 18 19 #include "hitls_build.h" 20 #ifdef HITLS_CRYPTO_BN 21 22 #include "bn_basic.h" 23 24 #ifdef __cplusplus 25 extern "C" { 26 #endif 27 28 /* unsigned BigNum subtraction, caution: The input parameter validity must be ensured during external invoking. */ 29 int32_t USub(BN_BigNum *r, const BN_BigNum *a, const BN_BigNum *b); 30 31 /* unsigned BigNum add fraction, caution: The input parameter validity must be ensured during external invoking. */ 32 void UDec(BN_BigNum *r, const BN_BigNum *a, BN_UINT w); 33 34 /* unsigned BigNum addition, caution: The input parameter validity must be ensured during external invoking. */ 35 int32_t UAdd(BN_BigNum *r, const BN_BigNum *a, const BN_BigNum *b); 36 37 #ifdef __cplusplus 38 } 39 #endif 40 41 #endif /* HITLS_CRYPTO_BN */ 42 43 #endif