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/*
* Copyright (c) 2006-2009 Bjorn Andersson <flex@kryo.se>, Erik Ekman <yarrick@kryo.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <string.h>
#include <sys/types.h>
#ifdef WINDOWS32
#include "windows.h"
#else
#include <arpa/inet.h>
#endif
#include "md5.h"
/*
* Needs a 16byte array for output, and 32 bytes password
*/
void
login_calculate(char *buf, int buflen, const char *pass, int seed)
{
unsigned char temp[32];
md5_state_t ctx;
int *ix;
int i;
int k;
if (buflen < 16)
return;
memcpy(temp, pass, 32);
ix = (int*) temp;
for (i = 0; i < 8; i++) {
k = ntohl(*ix);
k ^= seed;
*ix++ = htonl(k);
}
md5_init(&ctx);
md5_append(&ctx, temp, 32);
md5_finish(&ctx, (unsigned char *) buf);
}
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