1 // Copyright 2010-2020 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 15 #pragma once 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 #include <stdint.h> 22 23 /** 24 * The MD5 functions calculate a 128-bit cryptographic digest for any number of input bytes. 25 */ 26 27 /** 28 * @brief Type defined for MD5 context 29 * 30 */ 31 typedef struct MD5Context { 32 uint32_t buf[4]; 33 uint32_t bits[2]; 34 uint8_t in[64]; 35 } md5_context_t; 36 37 #define ESP_ROM_MD5_DIGEST_LEN 16 38 39 /** 40 * @brief Initialize the MD5 context 41 * 42 * @param context Context object allocated by user 43 */ 44 void esp_rom_md5_init(md5_context_t *context); 45 46 /** 47 * @brief Running MD5 algorithm over input data 48 * 49 * @param context MD5 context which has been initialized by `MD5Init` 50 * @param buf Input buffer 51 * @param len Buffer length in bytes 52 */ 53 void esp_rom_md5_update(md5_context_t *context, const void *buf, uint32_t len); 54 55 /** 56 * @brief Extract the MD5 result, and erase the context 57 * 58 * @param digest Where to store the 128-bit digest value 59 * @param context MD5 context 60 */ 61 void esp_rom_md5_final(uint8_t *digest, md5_context_t *context); 62 63 #ifdef __cplusplus 64 } 65 #endif 66