/*
 * md5-generator in js
 */



/*
 * zuerst paar benötigte routinen
 */
function array(n) 
{
	for(i=0;i<n;i++) this[i]=0;
  	this.length=n;
}

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

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

function shiftLeft_1(a) 
{
	a=a%0x80000000;
  	if(a&0x40000000==0x40000000)
  	{
  		a-=0x40000000;
    		a*=2;
    		a+=0x80000000;
  	} 
  	else
  	{
    		a*=2;
    	}
  	return a;
}

function shiftLeft(a,b) 
{
	a=integer(a);
  	b=integer(b);
  	for(var i=0;i<b;i++)
  	{
  		a=shiftLeft_1(a);
  	}
  	return a;
}

function and(a,b) 
{
	a=integer(a);
  	b=integer(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 or(a,b) 
{
	a=integer(a);
  	b=integer(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 xor(a,b) 
{
	a=integer(a);
  	b=integer(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 not(a) 
{
 	a=integer(a);
  	return(0xffffffff-a);
}


/*
 * dann der algorithmus
 */
var state=new array(4);
var count=new array(2);
var buffer=new array(64);
var transformBuffer=new array(16);
var digestBits=new array(16);

var S11= 7;	var S12=12;	var S13=17;	var S14=22;
var S21= 5;	var S22= 9;	var S23=14;	var S24=20;
var S31= 4;	var S32=11;	var S33=16;	var S34=23;
var S41= 6;	var S42=10;	var S43=15;	var S44=21;
        
count[0] = 0;
count[1] = 0;

function F(x,y,z) 
{
	return or(and(x,y),and(not(x),z));
}

function G(x,y,z)
{
        return or(and(x,z),and(y,not(z)));
}

function H(x,y,z) 
{
        return xor(xor(x,y),z);
}

function I(x,y,z) 
{
        return xor(y ,or(x , not(z)));
}

function rotateLeft(a,n) 
{
        return or(shiftLeft(a, n),(shiftRight(a,(32 - n))));
}

function FF(a,b,c,d,x,s,ac) 
{
        a=a+F(b, c, d) + x + ac;
        a=rotateLeft(a, s);
        a=a+b;
        return a;
}

function GG(a,b,c,d,x,s,ac) 
{
        a=a+G(b, c, d) +x + ac;
        a=rotateLeft(a, s);
        a=a+b;
        return a;
}

function HH(a,b,c,d,x,s,ac) 
{
        a=a+H(b, c, d) + x + ac;
        a=rotateLeft(a, s);
        a=a+b;
        return a;
}

function II(a,b,c,d,x,s,ac) 
{
        a=a+I(b, c, d) + x + ac;
        a=rotateLeft(a, s);
        a=a+b;
        return a;
}

function transform(buf,offset) 
{
	var a=0, b=0, c=0, d=0;
        var x=transformBuffer;

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

        for(i=0;i<16;i++) 
        {
        	x[i]=and(buf[i*4+offset],0xff);
            	for(j=1;j<4;j++) 
            	{
                	x[i]+=shiftLeft(and(buf[i*4+j+offset],0xff),j*8);
            	}
        }

        a = FF ( a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
        d = FF ( d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
        c = FF ( c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
        b = FF ( b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
        a = FF ( a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
        d = FF ( d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
        c = FF ( c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
        b = FF ( b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
        a = FF ( a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
        d = FF ( d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
        c = FF ( c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
        b = FF ( b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
        a = FF ( a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
        d = FF ( d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
        c = FF ( c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
        b = FF ( b, c, d, a, x[15], S14, 0x49b40821); /* 16 */

        a = GG ( a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
        d = GG ( d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
        c = GG ( c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
        b = GG ( b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
        a = GG ( a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
        d = GG ( d, a, b, c, x[10], S22,  0x2441453); /* 22 */
        c = GG ( c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
        b = GG ( b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
        a = GG ( a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
        d = GG ( d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
        c = GG ( c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
        b = GG ( b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
        a = GG ( a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
        d = GG ( d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
        c = GG ( c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
        b = GG ( b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */

        a = HH ( a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
        d = HH ( d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
        c = HH ( c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
        b = HH ( b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
        a = HH ( a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
        d = HH ( d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
        c = HH ( c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
        b = HH ( b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
        a = HH ( a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
        d = HH ( d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
        c = HH ( c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
        b = HH ( b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
        a = HH ( a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
        d = HH ( d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
        c = HH ( c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
        b = HH ( b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */

        a = II ( a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
        d = II ( d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
        c = II ( c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
        b = II ( b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
        a = II ( a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
        d = II ( d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
        c = II ( c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
        b = II ( b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
        a = II ( a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
        d = II ( d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
        c = II ( c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
        b = II ( b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
        a = II ( a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
        d = II ( d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
        c = II ( c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
        b = II ( b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */

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

function init() 
{
	count[0]=0;
        count[1]=0;
        state[0]=0x67452301;
        state[1]=0xefcdab89;
        state[2]=0x98badcfe;
        state[3]=0x10325476;
        
        for(i=0;i<digestBits.length;i++)
        {
        	digestBits[i] = 0;
        }
}
    
function update(b) 
{
        var index,i;

        index=and(shiftRight(count[0],3),0x3f);
        
        if(count[0]<0xffffffff-7)
        {
        	count[0]+=8;
        }
        else 
        {
        	count[1]++;
          	count[0]-=0xffffffff+1;
          	count[0]+=8;
        }
        buffer[index]=and(b,0xff);
        if(index >= 63) 
        {
        	transform(buffer, 0);
        }
}

function finish() 
{
        var bits=new array(8);
        var padding;
        var i=0;
        var index=0;
        var padLen=0;

        for(i=0;i<4;i++) 
        {
        	bits[i]=and(shiftRight(count[0],(i*8)),0xff);
        }
        
        for(i=0;i<4;i++) 
        {
            	bits[i+4]=and(shiftRight(count[1],(i*8)),0xff);
        }
        
        index=and(shiftRight(count[0],3),0x3f);
        padLen=(index<56) ? (56-index) : (120-index);
        padding=new array(64);
        padding[0]=0x80;
        
        for(i=0;i<padLen;i++)
        {
        	update(padding[i]);
        }
        
        for(i=0;i<8;i++)
        {
        	update(bits[i]);
        }

        for(i=0;i<4;i++) 
        {
        	for(j=0;j<4;j++) 
        	{
                	digestBits[i*4+j]=and(shiftRight(state[i],(j*8)),0xff);
            	}
        }
}


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

function makeHex(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;
}


function md5(nachricht)
{
	var l,s,k,ka,kb,kc,kd;

 	init();
 	
 	for(k=0;k<nachricht.length;k++)
 	{
   		l=nachricht.charAt(k);
   		update(ascii.lastIndexOf(l));
 	}
 
 	finish();
 
 	ka=kb=kc=kd=0;
 	for(i=0;i<4;i++) ka+=shiftLeft(digestBits[15-i],(i*8));
 	for(i=4;i<8;i++) kb+=shiftLeft(digestBits[15-i],((i-4)*8));
 	for(i=8;i<12;i++) kc+=shiftLeft(digestBits[15-i],((i-8)*8));
 	for(i=12;i<16;i++) kd+=shiftLeft(digestBits[15-i],((i-12)*8));
 	
 	s=makeHex(kd)+makeHex(kc)+makeHex(kb)+makeHex(ka);
 	return s;
}

function EncodePass()
{
	var klartext;
	
	klartext=document.login.klarpass.value;
	document.login.md5pass.value=md5(klartext);
	//document.login.klarpass.value='sniff_bei_deiner_mutter_du_spaten!';
}