1 /* 2 * Copyright (c) 2020 HiSilicon (Shanghai) Technologies CO., LIMITED. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License.. 14 * Description: the head File of sha256 15 */ 16 17 #ifndef SHA256_H 18 #define SHA256_H 19 20 #include <stdint.h> 21 #include "std_def.h" 22 23 #define SHA256_HASH_SIZE 32 24 25 /* Hash size in 32-bit words */ 26 #define SHA256_HASH_WORDS 8 27 28 #define SHA256_BUFFER_WORDS 16 29 #define SHA256_BUFFER_BYTES 64 30 31 struct _sha256_context { 32 uint64_t total_length; 33 uint32_t hash[SHA256_HASH_WORDS]; 34 uint32_t buffer_length; 35 36 union { 37 uint32_t words[SHA256_BUFFER_WORDS]; 38 uint8_t bytes[SHA256_BUFFER_BYTES]; 39 } buffer; 40 #ifdef RUNTIME_ENDIAN 41 int little_endian; 42 #endif /* RUNTIME_ENDIAN */ 43 }; 44 45 typedef struct _sha256_context sha256_context_t; 46 47 void sha256_init(sha256_context_t *sc); 48 void SHA256Update(sha256_context_t *sc, const void *vdata, uint32_t len); 49 50 void sha256_final(sha256_context_t *sc, uint8_t hash[SHA256_HASH_SIZE], uint32_t hash_len); 51 void sha256_hash(const uint8_t *in_buff, uint32_t in_buff_len, uint8_t *out_buff, uint32_t out_buff_len); 52 53 #endif 54