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Hash.cpp
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117 lines (96 loc) · 2.87 KB
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/**
* @file Hash.cpp
* @date 20.05.2015
* @author Markus Sattler
*
* Copyright (c) 2015 Markus Sattler. All rights reserved.
* This file is part of the esp8266 core for Arduino environment.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <Arduino.h>
#include "Hash.h"
extern "C" {
#include "sha1/sha1.h"
}
/**
* create a sha1 hash from data
* @param data uint8_t *
* @param size uint32_t
* @param hash uint8_t[20]
*/
void sha1(uint8_t * data, uint32_t size, uint8_t hash[20]) {
SHA1_CTX ctx;
#ifdef DEBUG_SHA1
os_printf("DATA:");
for(uint16_t i = 0; i < size; i++) {
os_printf("%02X", data[i]);
}
os_printf("\n");
os_printf("DATA:");
for(uint16_t i = 0; i < size; i++) {
os_printf("%c", data[i]);
}
os_printf("\n");
#endif
SHA1Init(&ctx);
SHA1Update(&ctx, data, size);
SHA1Final(hash, &ctx);
#ifdef DEBUG_SHA1
os_printf("SHA1:");
for(uint16_t i = 0; i < 20; i++) {
os_printf("%02X", hash[i]);
}
os_printf("\n\n");
#endif
}
void sha1(char * data, uint32_t size, uint8_t hash[20]) {
sha1((uint8_t *) data, size, hash);
}
void sha1(const uint8_t * data, uint32_t size, uint8_t hash[20]) {
sha1((uint8_t *) data, size, hash);
}
void sha1(const char * data, uint32_t size, uint8_t hash[20]) {
sha1((uint8_t *) data, size, hash);
}
void sha1(String data, uint8_t hash[20]) {
sha1(data.c_str(), data.length(), hash);
}
String sha1(uint8_t* data, uint32_t size) {
uint8_t hash[20];
String hashStr = "";
sha1(&data[0], size, &hash[0]);
for(uint16_t i = 0; i < 20; i++) {
String hex = String(hash[i], HEX);
if(hex.length() < 2) {
hex = "0" + hex;
}
hashStr += hex;
}
return hashStr;
}
String sha1(char* data, uint32_t size) {
return sha1((uint8_t*) data, size);
}
String sha1(const uint8_t* data, uint32_t size) {
return sha1((uint8_t*) data, size);
}
String sha1(const char* data, uint32_t size) {
return sha1((uint8_t*) data, size);
}
String sha1(String data) {
return sha1(data.c_str(), data.length());
}