1 /* 2 ROM functions for hardware SHA support. 3 4 It is not recommended to use these functions directly. If using 5 them from esp-idf then use the esp_sha_lock_engine() and 6 esp_sha_lock_memory_block() functions in esp32/sha.h to ensure 7 exclusive access. 8 */ 9 // Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD 10 // 11 // Licensed under the Apache License, Version 2.0 (the "License"); 12 // you may not use this file except in compliance with the License. 13 // You may obtain a copy of the License at 14 15 // http://www.apache.org/licenses/LICENSE-2.0 16 // 17 // Unless required by applicable law or agreed to in writing, software 18 // distributed under the License is distributed on an "AS IS" BASIS, 19 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 20 // See the License for the specific language governing permissions and 21 // limitations under the License. 22 #ifndef _ROM_SHA_H_ 23 #define _ROM_SHA_H_ 24 25 #include <stdint.h> 26 #include <stdbool.h> 27 #include <stddef.h> 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 typedef struct SHAContext { 34 bool start; 35 uint32_t total_input_bits[4]; 36 } SHA_CTX; 37 38 enum SHA_TYPE { 39 SHA1 = 0, 40 SHA2_256, 41 SHA2_384, 42 SHA2_512, 43 44 45 SHA_INVALID = -1, 46 }; 47 48 /* Do not use these function in multi core mode due to 49 * inside they have no safe implementation (without DPORT workaround). 50 */ 51 void ets_sha_init(SHA_CTX *ctx); 52 53 void ets_sha_enable(void); 54 55 void ets_sha_disable(void); 56 57 void ets_sha_update(SHA_CTX *ctx, enum SHA_TYPE type, const uint8_t *input, size_t input_bits); 58 59 void ets_sha_finish(SHA_CTX *ctx, enum SHA_TYPE type, uint8_t *output); 60 61 #ifdef __cplusplus 62 } 63 #endif 64 65 #endif /* _ROM_SHA_H_ */ 66
