1 /* 2 * Copyright (c) 2023 O.S.Systems 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef __UPDATEHUB_INTEGRITY_H__ 8 #define __UPDATEHUB_INTEGRITY_H__ 9 10 #if defined(CONFIG_FLASH_AREA_CHECK_INTEGRITY_MBEDTLS) 11 #include <mbedtls/md.h> 12 #elif defined(CONFIG_FLASH_AREA_CHECK_INTEGRITY_TC) 13 #include <tinycrypt/sha256.h> 14 #include <tinycrypt/constants.h> 15 #else 16 #error "Integrity check method not defined" 17 #endif 18 19 #ifdef __cplusplus 20 extern "C" { 21 #endif 22 23 #define SHA256_BIN_DIGEST_SIZE (32) 24 #define SHA256_HEX_DIGEST_SIZE ((SHA256_BIN_DIGEST_SIZE * 2) + 1) 25 26 struct updatehub_crypto_context { 27 #if defined(CONFIG_FLASH_AREA_CHECK_INTEGRITY_MBEDTLS) 28 mbedtls_md_context_t md_ctx; 29 const mbedtls_md_info_t *md_info; 30 #elif defined(CONFIG_FLASH_AREA_CHECK_INTEGRITY_TC) 31 struct tc_sha256_state_struct sha256sum; 32 #endif 33 }; 34 35 int updatehub_integrity_init(struct updatehub_crypto_context *ctx); 36 int updatehub_integrity_update(struct updatehub_crypto_context *ctx, 37 const uint8_t *buffer, const uint32_t len); 38 int updatehub_integrity_finish(struct updatehub_crypto_context *ctx, 39 uint8_t *hash, const uint32_t size); 40 41 #ifdef __cplusplus 42 } 43 #endif 44 45 #endif /* __UPDATEHUB_INTEGRITY_H__ */ 46
