ESP-IDF
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Outline
#include <stdint.h>
#include "sdkconfig.h"
#define ESP_ROM_MD5_DIGEST_LEN
MD5Context
esp_rom_md5_init(md5_context_t *);
esp_rom_md5_update(md5_context_t *, const void *, uint32_t);
esp_rom_md5_final(uint8_t *, md5_context_t *);
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_rom/include/esp_rom_md5.h
 
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/* * SPDX-FileCopyrightText: 2010-2022 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #pragma once #ifdef __cplusplus extern "C" { #endif #include <stdint.h> #include "sdkconfig.h" /** * The MD5 functions calculate a 128-bit cryptographic digest for any number of input bytes. *//* ... */ #define ESP_ROM_MD5_DIGEST_LEN 16 #if CONFIG_IDF_TARGET_ESP32C2 /** * \brief MD5 context structure * * \warning MD5 is considered a weak message digest and its use * constitutes a security risk. We recommend considering * stronger message digests instead. * *//* ... */ typedef struct mbedtls_md5_context { uint32_t total[2]; /*!< number of bytes processed */ uint32_t state[4]; /*!< intermediate digest state */ unsigned char buffer[64]; /*!< data block being processed */ }{...} md5_context_t; /* Functions extracted from ROM, do not use it as an public API */ void esp_rom_mbedtls_md5_starts_ret(md5_context_t *context); void esp_rom_mbedtls_md5_update_ret(md5_context_t *context, const void *buf, uint32_t len); void esp_rom_mbedtls_md5_finish_ret(md5_context_t *context, uint8_t *digest); /** * @brief Initialize the MD5 context * * @param context Context object allocated by user *//* ... */ static inline void esp_rom_md5_init(md5_context_t *context) { esp_rom_mbedtls_md5_starts_ret(context); }{...} /** * @brief Running MD5 algorithm over input data * * @param context MD5 context which has been initialized by `MD5Init` * @param buf Input buffer * @param len Buffer length in bytes *//* ... */ static inline void esp_rom_md5_update(md5_context_t *context, const void *buf, uint32_t len) { esp_rom_mbedtls_md5_update_ret(context, buf, len); }{...} /** * @brief Extract the MD5 result, and erase the context * * @param digest Where to store the 128-bit digest value * @param context MD5 context *//* ... */ static inline void esp_rom_md5_final(uint8_t *digest, md5_context_t *context) { esp_rom_mbedtls_md5_finish_ret(context, digest); }{...} /* ... */ #else //#if !CONFIG_IDF_TARGET_ESP32C2 /** * @brief Type defined for MD5 context * *//* ... */ typedef struct MD5Context { uint32_t buf[4]; uint32_t bits[2]; uint8_t in[64]; }{ ... } md5_context_t; /** * @brief Initialize the MD5 context * * @param context Context object allocated by user *//* ... */ void esp_rom_md5_init(md5_context_t *context); /** * @brief Running MD5 algorithm over input data * * @param context MD5 context which has been initialized by `MD5Init` * @param buf Input buffer * @param len Buffer length in bytes *//* ... */ void esp_rom_md5_update(md5_context_t *context, const void *buf, uint32_t len); /** * @brief Extract the MD5 result, and erase the context * * @param digest Where to store the 128-bit digest value * @param context MD5 context *//* ... */ void esp_rom_md5_final(uint8_t *digest, md5_context_t *context); /* ... */ #endif #ifdef __cplusplus }{...} #endif
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