1 // Copyright 2017 Espressif Systems (Shanghai) PTE LTD 2 // 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 #pragma once 15 16 /* Provide a SHA256 API for bootloader_support code, 17 that can be used from bootloader or app code. 18 19 This header is available to source code in the bootloader & bootloader_support components only. 20 Use mbedTLS APIs or include esp32/sha.h to calculate SHA256 in IDF apps. 21 */ 22 23 #include <stdint.h> 24 #include <stdlib.h> 25 #include "esp_err.h" 26 27 typedef void *bootloader_sha256_handle_t; 28 29 bootloader_sha256_handle_t bootloader_sha256_start(void); 30 31 void bootloader_sha256_data(bootloader_sha256_handle_t handle, const void *data, size_t data_len); 32 33 void bootloader_sha256_finish(bootloader_sha256_handle_t handle, uint8_t *digest); 34