text: /*
   * Copyright (c) 2006-2014 Erik Ekman <yarrick@kryo.se>,
   * 2006-2009 Bjorn Andersson <flex@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 <netinet/in.h>
  #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);
  
  }
  
  