components/bootloader_support/include_priv/bootloader_sha.h

   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 hwcrypto/sha.h to calculate SHA256 in IDF apps.
  21 */
  22
  23 #include <stdint.h>
  24 #include <stdlib.h>
  25
  26 typedef void *bootloader_sha256_handle_t;
  27
  28 bootloader_sha256_handle_t bootloader_sha256_start();
  29
  30 void bootloader_sha256_data(bootloader_sha256_handle_t handle, const void *data, size_t data_len);
  31
  32 void bootloader_sha256_finish(bootloader_sha256_handle_t handle, uint8_t *digest);