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_BASIC_H 17 #define BN_BASIC_H 18 19 #include "hitls_build.h" 20 #ifdef HITLS_CRYPTO_BN 21 22 #include "crypt_bn.h" 23 24 #ifdef __cplusplus 25 extern "C" { 26 #endif 27 28 struct BnMont { 29 uint32_t mSize; /* *< size of mod in BN_UINT */ 30 BN_UINT k0; /* *< low word of (1/(r - mod[0])) mod r */ 31 BN_UINT *mod; /* *< mod */ 32 BN_UINT *one; /* *< store one */ 33 BN_UINT *montRR; /* *< mont_enc(1) */ 34 BN_UINT *b; /* *< tmpb(1) */ 35 BN_UINT *t; /* *< tmpt(1) ^ 2 */ 36 }; 37 38 struct BnCbCtx { 39 void *arg; // callback parameter 40 BN_CallBack cb; // callback function, which is defined by the user 41 }; 42 43 /* Find a pointer address aligned by 'alignment' bytes in the [ptr, ptr + alignment - 1] range. 44 The input parameter alignment cannot be 0. */ AlignedPointer(const void * ptr,uintptr_t alignment)45static inline BN_UINT *AlignedPointer(const void *ptr, uintptr_t alignment) 46 { 47 uint8_t *p = (uint8_t *)(uintptr_t)ptr + alignment - 1; 48 return (BN_UINT *)((uintptr_t)p - (uintptr_t)p % alignment); 49 } 50 51 int32_t BnExtend(BN_BigNum *a, uint32_t words); 52 53 #ifdef __cplusplus 54 } 55 #endif 56 57 #endif /* HITLS_CRYPTO_BN */ 58 59 #endif