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/*
Copyright (©) 2003-2025 Teus Benschop.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <filter/md5.h>
#include <mbedtls/md5.h>
std::string md5 (const std::string str)
{
unsigned char md5sum[16];
const unsigned char *input = reinterpret_cast<const unsigned char *>(str.c_str ());
mbedtls_md5 (input, str.size (), md5sum);
// Space for 32 bytes of hexits and one terminating null byte.
char hexits [32+1];
memset (hexits, 0, sizeof (hexits));
for (int i = 0; i < 16; i++) {
// sprintf (&hexits[i*2], "%02x", static_cast<unsigned int>(md5sum[i]));
// Function sprintf is marked as deprecated.
// Due to security concerns inherent in the design of sprintf(3),
// it now uses snprintf(3) instead.
snprintf (&hexits[i*2], 3, "%02x", static_cast<unsigned int>(md5sum[i]));
}
// Resulting hexits.
return std::string (hexits);
}
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