/*
 *  md5.js 1.0b 27/06/96
 *
 * Javascript implementation of the RSA Data Security, Inc. MD5
 * Message-Digest Algorithm.
 *
 * Copyright (c) 1996 Henri Torgemane. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for any purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies. 
 *
 * Of course, this soft is provided "as is" without express or implied
 * warranty of any kind.
 */

function encryptField(oField, oFieldToSend){
	var fieldlength = oField.value.length;	
	oFieldToSend.value = md5auth(oField.value);
	oField.value = '';
	for(var i=0;i<fieldlength;i++)	oField.value += '*';
	return true;
}

function md5auth(value) {
  var hash = MD5(value+value);
  return hash;
}


function MD5array(n) {
  for(i=0;i<n;i++) this[i]=0;
  this.length=n;
}

/* Some basic logical functions had to be rewritten because of a bug in
 * Javascript.. Just try to compute 0xffffffff >> 4 with it..
 * Of course, these functions are slower than the original would be, but
 * at least, they work!
 */

function MD5integer(n) { return n%(0xffffffff+1); }

function MD5shr(a,b) {
  a=MD5integer(a);
  b=MD5integer(b);
  if (a-0x80000000>=0) {
    a=a%0x80000000;
    a>>=b;
    a+=0x40000000>>(b-1);
  } else
    a>>=b;
  return a;
}

function MD5shl1(a) {
  a=a%0x80000000;
  if (a&0x40000000==0x40000000)
  {
    a-=0x40000000;  
    a*=2;
    a+=0x80000000;
  } else
    a*=2;
  return a;
}

function MD5shl(a,b) {
  a=MD5integer(a);
  b=MD5integer(b);
  for (var i=0;i<b;i++) a=MD5shl1(a);
  return a;
}

function MD5and(a,b) {
  a=MD5integer(a);
  b=MD5integer(b);
  var t1=(a-0x80000000);
  var t2=(b-0x80000000);
  if (t1>=0) 
    if (t2>=0) 
      return ((t1&t2)+0x80000000);
    else
      return (t1&b);
  else
    if (t2>=0)
      return (a&t2);
    else
      return (a&b);  
}

function MD5or(a,b) {
  a=MD5integer(a);
  b=MD5integer(b);
  var t1=(a-0x80000000);
  var t2=(b-0x80000000);
  if (t1>=0) 
    if (t2>=0) 
      return ((t1|t2)+0x80000000);
    else
      return ((t1|b)+0x80000000);
  else
    if (t2>=0)
      return ((a|t2)+0x80000000);
    else
      return (a|b);  
}

function MD5xor(a,b) {
  a=MD5integer(a);
  b=MD5integer(b);
  var t1=(a-0x80000000);
  var t2=(b-0x80000000);
  if (t1>=0) 
    if (t2>=0) 
      return (t1^t2);
    else
      return ((t1^b)+0x80000000);
  else
    if (t2>=0)
      return ((a^t2)+0x80000000);
    else
      return (a^b);  
}

function MD5not(a) {
  a=MD5integer(a);
  return (0xffffffff-a);
}

/* Here begin the real algorithm */

    var MD5state = new MD5array(4); 
    var MD5count = new MD5array(2);
	MD5count[0] = 0;
	MD5count[1] = 0;                     
    var MD5buffer = new MD5array(64); 
    var MD5transformBuffer = new MD5array(16); 
    var MD5digestBits = new MD5array(16);

    var MD5S11 = 7;
    var MD5S12 = 12;
    var MD5S13 = 17;
    var MD5S14 = 22;
    var MD5S21 = 5;
    var MD5S22 = 9;
    var MD5S23 = 14;
    var MD5S24 = 20;
    var MD5S31 = 4;
    var MD5S32 = 11;
    var MD5S33 = 16;
    var MD5S34 = 23;
    var MD5S41 = 6;
    var MD5S42 = 10;
    var MD5S43 = 15;
    var MD5S44 = 21;

    function MD5f(x,y,z) {
	return MD5or(MD5and(x,y),MD5and(MD5not(x),z));
    }

    function MD5g(x,y,z) {
	return MD5or(MD5and(x,z),MD5and(y,MD5not(z)));
    }

    function MD5h(x,y,z) {
	return MD5xor(MD5xor(x,y),z);
    }

    function MD5i(x,y,z) {
	return MD5xor(y ,MD5or(x , MD5not(z)));
    }

    function MD5rotateLeft(a,n) {
	return MD5or(MD5shl(a, n),(MD5shr(a,(32 - n))));
    }

    function MD5ff(a,b,c,d,x,s,ac) {
        a = a+MD5f(b, c, d) + x + ac;
	a = MD5rotateLeft(a, s);
	a = a+b;
	return a;
    }

    function MD5gg(a,b,c,d,x,s,ac) {
	a = a+MD5g(b, c, d) +x + ac;
	a = MD5rotateLeft(a, s);
	a = a+b;
	return a;
    }

    function MD5hh(a,b,c,d,x,s,ac) {
	a = a+MD5h(b, c, d) + x + ac;
	a = MD5rotateLeft(a, s);
	a = a+b;
	return a;
    }

    function MD5ii(a,b,c,d,x,s,ac) {
	a = a+MD5i(b, c, d) + x + ac;
	a = MD5rotateLeft(a, s);
	a = a+b;
	return a;
    }

    function transform(buf,offset) { 
	var a=0, b=0, c=0, d=0; 
	var x = MD5transformBuffer;
	
	a = MD5state[0];
	b = MD5state[1];
	c = MD5state[2];
	d = MD5state[3];
	
	for (i = 0; i < 16; i++) {
	    x[i] = MD5and(buf[i*4+offset],0xff);
	    for (j = 1; j < 4; j++) {
		x[i]+=MD5shl(MD5and(buf[i*4+j+offset] ,0xff), j * 8);
	    }
	}

	/* Round 1 */
	a = MD5ff( a, b, c, d, x[ 0], MD5S11, 0xd76aa478); /* 1 */
	d = MD5ff( d, a, b, c, x[ 1], MD5S12, 0xe8c7b756); /* 2 */
	c = MD5ff( c, d, a, b, x[ 2], MD5S13, 0x242070db); /* 3 */
	b = MD5ff( b, c, d, a, x[ 3], MD5S14, 0xc1bdceee); /* 4 */
	a = MD5ff( a, b, c, d, x[ 4], MD5S11, 0xf57c0faf); /* 5 */
	d = MD5ff( d, a, b, c, x[ 5], MD5S12, 0x4787c62a); /* 6 */
	c = MD5ff( c, d, a, b, x[ 6], MD5S13, 0xa8304613); /* 7 */
	b = MD5ff( b, c, d, a, x[ 7], MD5S14, 0xfd469501); /* 8 */
	a = MD5ff( a, b, c, d, x[ 8], MD5S11, 0x698098d8); /* 9 */
	d = MD5ff( d, a, b, c, x[ 9], MD5S12, 0x8b44f7af); /* 10 */
	c = MD5ff( c, d, a, b, x[10], MD5S13, 0xffff5bb1); /* 11 */
	b = MD5ff( b, c, d, a, x[11], MD5S14, 0x895cd7be); /* 12 */
	a = MD5ff( a, b, c, d, x[12], MD5S11, 0x6b901122); /* 13 */
	d = MD5ff( d, a, b, c, x[13], MD5S12, 0xfd987193); /* 14 */
	c = MD5ff( c, d, a, b, x[14], MD5S13, 0xa679438e); /* 15 */
	b = MD5ff( b, c, d, a, x[15], MD5S14, 0x49b40821); /* 16 */

	/* Round 2 */
	a = MD5gg( a, b, c, d, x[ 1], MD5S21, 0xf61e2562); /* 17 */
	d = MD5gg( d, a, b, c, x[ 6], MD5S22, 0xc040b340); /* 18 */
	c = MD5gg( c, d, a, b, x[11], MD5S23, 0x265e5a51); /* 19 */
	b = MD5gg( b, c, d, a, x[ 0], MD5S24, 0xe9b6c7aa); /* 20 */
	a = MD5gg( a, b, c, d, x[ 5], MD5S21, 0xd62f105d); /* 21 */
	d = MD5gg( d, a, b, c, x[10], MD5S22,  0x2441453); /* 22 */
	c = MD5gg( c, d, a, b, x[15], MD5S23, 0xd8a1e681); /* 23 */
	b = MD5gg( b, c, d, a, x[ 4], MD5S24, 0xe7d3fbc8); /* 24 */
	a = MD5gg( a, b, c, d, x[ 9], MD5S21, 0x21e1cde6); /* 25 */
	d = MD5gg( d, a, b, c, x[14], MD5S22, 0xc33707d6); /* 26 */
	c = MD5gg( c, d, a, b, x[ 3], MD5S23, 0xf4d50d87); /* 27 */
	b = MD5gg( b, c, d, a, x[ 8], MD5S24, 0x455a14ed); /* 28 */
	a = MD5gg( a, b, c, d, x[13], MD5S21, 0xa9e3e905); /* 29 */
	d = MD5gg( d, a, b, c, x[ 2], MD5S22, 0xfcefa3f8); /* 30 */
	c = MD5gg( c, d, a, b, x[ 7], MD5S23, 0x676f02d9); /* 31 */
	b = MD5gg( b, c, d, a, x[12], MD5S24, 0x8d2a4c8a); /* 32 */

	/* Round 3 */
	a = MD5hh( a, b, c, d, x[ 5], MD5S31, 0xfffa3942); /* 33 */
	d = MD5hh( d, a, b, c, x[ 8], MD5S32, 0x8771f681); /* 34 */
	c = MD5hh( c, d, a, b, x[11], MD5S33, 0x6d9d6122); /* 35 */
	b = MD5hh( b, c, d, a, x[14], MD5S34, 0xfde5380c); /* 36 */
	a = MD5hh( a, b, c, d, x[ 1], MD5S31, 0xa4beea44); /* 37 */
	d = MD5hh( d, a, b, c, x[ 4], MD5S32, 0x4bdecfa9); /* 38 */
	c = MD5hh( c, d, a, b, x[ 7], MD5S33, 0xf6bb4b60); /* 39 */
	b = MD5hh( b, c, d, a, x[10], MD5S34, 0xbebfbc70); /* 40 */
	a = MD5hh( a, b, c, d, x[13], MD5S31, 0x289b7ec6); /* 41 */
	d = MD5hh( d, a, b, c, x[ 0], MD5S32, 0xeaa127fa); /* 42 */
	c = MD5hh( c, d, a, b, x[ 3], MD5S33, 0xd4ef3085); /* 43 */
	b = MD5hh( b, c, d, a, x[ 6], MD5S34,  0x4881d05); /* 44 */
	a = MD5hh( a, b, c, d, x[ 9], MD5S31, 0xd9d4d039); /* 45 */
	d = MD5hh( d, a, b, c, x[12], MD5S32, 0xe6db99e5); /* 46 */
	c = MD5hh( c, d, a, b, x[15], MD5S33, 0x1fa27cf8); /* 47 */
	b = MD5hh( b, c, d, a, x[ 2], MD5S34, 0xc4ac5665); /* 48 */

	/* Round 4 */
	a = MD5ii( a, b, c, d, x[ 0], MD5S41, 0xf4292244); /* 49 */
	d = MD5ii( d, a, b, c, x[ 7], MD5S42, 0x432aff97); /* 50 */
	c = MD5ii( c, d, a, b, x[14], MD5S43, 0xab9423a7); /* 51 */
	b = MD5ii( b, c, d, a, x[ 5], MD5S44, 0xfc93a039); /* 52 */
	a = MD5ii( a, b, c, d, x[12], MD5S41, 0x655b59c3); /* 53 */
	d = MD5ii( d, a, b, c, x[ 3], MD5S42, 0x8f0ccc92); /* 54 */
	c = MD5ii( c, d, a, b, x[10], MD5S43, 0xffeff47d); /* 55 */
	b = MD5ii( b, c, d, a, x[ 1], MD5S44, 0x85845dd1); /* 56 */
	a = MD5ii( a, b, c, d, x[ 8], MD5S41, 0x6fa87e4f); /* 57 */
	d = MD5ii( d, a, b, c, x[15], MD5S42, 0xfe2ce6e0); /* 58 */
	c = MD5ii( c, d, a, b, x[ 6], MD5S43, 0xa3014314); /* 59 */
	b = MD5ii( b, c, d, a, x[13], MD5S44, 0x4e0811a1); /* 60 */
	a = MD5ii( a, b, c, d, x[ 4], MD5S41, 0xf7537e82); /* 61 */
	d = MD5ii( d, a, b, c, x[11], MD5S42, 0xbd3af235); /* 62 */
	c = MD5ii( c, d, a, b, x[ 2], MD5S43, 0x2ad7d2bb); /* 63 */
	b = MD5ii( b, c, d, a, x[ 9], MD5S44, 0xeb86d391); /* 64 */

	MD5state[0] +=a;
	MD5state[1] +=b;
	MD5state[2] +=c;
	MD5state[3] +=d;

    }

    function init() {
	MD5count[0]=MD5count[1] = 0;
	MD5state[0] = 0x67452301;
	MD5state[1] = 0xefcdab89;
	MD5state[2] = 0x98badcfe;
	MD5state[3] = 0x10325476;
	for (i = 0; i < MD5digestBits.length; i++)
	    MD5digestBits[i] = 0;
    }

    function MD5update(b) { 
	var index,i;
	
	index = MD5and(MD5shr(MD5count[0],3) , 0x3f);
	if (MD5count[0]<0xffffffff-7) 
	  MD5count[0] += 8;
        else {
	  MD5count[1]++;
	  MD5count[0]-=0xffffffff+1;
          MD5count[0]+=8;
        }
	MD5buffer[index] = MD5and(b,0xff);
	if (index  >= 63) {
	    transform(MD5buffer, 0);
	}
    }

    function MD5finish() {
	var bits = new MD5array(8);
	var	padding; 
	var	i=0, index=0, padLen=0;

	for (i = 0; i < 4; i++) {
	    bits[i] = MD5and(MD5shr(MD5count[0],(i * 8)), 0xff);
	}
        for (i = 0; i < 4; i++) {
	    bits[i+4]=MD5and(MD5shr(MD5count[1],(i * 8)), 0xff);
	}
	index = MD5and(MD5shr(MD5count[0], 3) ,0x3f);
	padLen = (index < 56) ? (56 - index) : (120 - index);
	padding = new MD5array(64); 
	padding[0] = 0x80;
        for (i=0;i<padLen;i++)
	  MD5update(padding[i]);
        for (i=0;i<8;i++) 
	  MD5update(bits[i]);

	for (i = 0; i < 4; i++) {
	    for (j = 0; j < 4; j++) {
		MD5digestBits[i*4+j] = MD5and(MD5shr(MD5state[i], (j * 8)) , 0xff);
	    }
	} 
    }

/* End of the MD5 algorithm */

function MD5hexa(n) {
 var hexa_h = "0123456789abcdef";
 var hexa_c=""; 
 var hexa_m=n;
 for (hexa_i=0;hexa_i<8;hexa_i++) {
   hexa_c=hexa_h.charAt(Math.abs(hexa_m)%16)+hexa_c;
   hexa_m=Math.floor(hexa_m/16);
 }
 return hexa_c;
}


var MD5ascii="01234567890123456789012345678901" +
          " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"+
          "[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";

function MD5(entree) 
{
 var l,s,k,ka,kb,kc,kd;

 init();
 for (k=0;k<entree.length;k++) {
   l=entree.charAt(k);
   MD5update(MD5ascii.lastIndexOf(l));
 }
 MD5finish();
 ka=kb=kc=kd=0;
 for (i=0;i<4;i++) ka+=MD5shl(MD5digestBits[15-i], (i*8));
 for (i=4;i<8;i++) kb+=MD5shl(MD5digestBits[15-i], ((i-4)*8));
 for (i=8;i<12;i++) kc+=MD5shl(MD5digestBits[15-i], ((i-8)*8));
 for (i=12;i<16;i++) kd+=MD5shl(MD5digestBits[15-i], ((i-12)*8));
 s=MD5hexa(kd)+MD5hexa(kc)+MD5hexa(kb)+MD5hexa(ka);
 return s; 
}