petidomo/generate-cookie.c
2010-02-24 17:33:58 +01:00

47 lines
1.2 KiB
C

/*
$Source$
$Revision$
Copyright (C) 2001 by Peter Simons <simons@cryp.to>.
This file is part of Petidomo.
Petidomo 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 2, or (at your option)
any later version.
Petidomo 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.
*/
#include "petidomo.h"
#include "md5.h"
#include <string.h>
static char* encode_digest_to_ascii(unsigned char digest[16])
{
int i;
static const char hex[] = "0123456789ABCDEF";
char * buffer;
buffer = xmalloc(33);
for (i = 0; i < 16; i++)
{
buffer[i+i] = hex[digest[i] >> 4];
buffer[i+i+1] = hex[digest[i] & 0x0f];
}
buffer[i+i] = '\0';
return buffer;
}
char* generate_cookie(const char* buffer)
{
unsigned char digest[MD5_DIGEST_SIZE];
md5_buffer(buffer, strlen(buffer), digest);
return encode_digest_to_ascii(digest);
}