/* jrw note: this md5 code GPL'd by Paul Johnston at his web site: http://cw.oaktree.co.uk/site/legal.html */
/*
	** pjMd5.js
	**
	** A JavaScript implementation of the RSA Data Security, Inc. MD5
	** Message-Digest Algorithm.
	**
	** Copyright (C) Paul Johnston 1999.
	*/

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

	function hex(i) {
	h="";
	for(j=0; j<=3; j++) {
	  h+=sHex.charAt((i>>(j*8+4))&0x0F)+sHex.charAt((i>>(j*8))&0x0F);
	}
	return h;
	}
	function add(x,y) {
	return ((x&0x7FFFFFFF)+(y&0x7FFFFFFF) )^(x&0x80000000)^(y&0x80000000);
	}
	function R1(A,B,C,D,X,S,T) {
	q=add( add(A,(B&C)|((~B)&D)), add(X,T) );
	return add( (q<<S)|( (q>>(32-S))&(Math.pow(2,S)-1) ), B );
	}
	function R2(A,B,C,D,X,S,T) {
	q=add( add(A,(B&D)|(C&(~D))), add(X,T) );
	return add( (q<<S)|( (q>>(32-S))&(Math.pow(2,S)-1) ), B );
	}
	function R3(A,B,C,D,X,S,T) {
	q=add( add(A,B^C^D), add(X,T) );
	return add( (q<<S)|( (q>>(32-S))&(Math.pow(2,S)-1) ), B );
	}
	function R4(A,B,C,D,X,S,T) {
	q=add( add(A,C^(B|(~D))), add(X,T) );
	return add( (q<<S)|( (q>>(32-S))&(Math.pow(2,S)-1) ), B );
	}

	function calcMD5(sInp) {

	/* Calculate length in words, including padding */
	wLen=(((sInp.length+8)>>6)+1)<<4;
	var X = new Array(wLen);

	/* Convert string to array of words */
	j=4;
	for (i=0; (i*4)<sInp.length; i++) {
	X[i]=0;
	for (j=0; j<4 && (i*4+j)<sInp.length; j++) {
	  X[i]+=(sAscii.indexOf(sInp.charAt((i*4)+j))+32)<<(j*8);
	}
	}

	/* Append the 1 and 0s to make a multiple of 4 bytes */
	if (j==4) { X[i++]=0x80; }
	else { X[i-1]+=0x80<<(j*8); }
	/* Appends 0s to make a 14+k16 words */
	while ( i<wLen ) { X[i]=0; i++; }
	/* Append length */
	X[wLen-2]=sInp.length<<3;
	/* Initialize a,b,c,d */
	a=0x67452301; b=0xefcdab89; c=0x98badcfe; d=0x10325476;

	/* Process each 16 word block in turn */
	for (i=0; i<wLen; i+=16) {
	aO=a; bO=b; cO=c; dO=d;

	a=R1(a,b,c,d,X[i+ 0],7 ,0xd76aa478);
	d=R1(d,a,b,c,X[i+ 1],12,0xe8c7b756);
	c=R1(c,d,a,b,X[i+ 2],17,0x242070db);
	b=R1(b,c,d,a,X[i+ 3],22,0xc1bdceee);
	a=R1(a,b,c,d,X[i+ 4],7 ,0xf57c0faf);
	d=R1(d,a,b,c,X[i+ 5],12,0x4787c62a);
	c=R1(c,d,a,b,X[i+ 6],17,0xa8304613);
	b=R1(b,c,d,a,X[i+ 7],22,0xfd469501);
	a=R1(a,b,c,d,X[i+ 8],7 ,0x698098d8);
	d=R1(d,a,b,c,X[i+ 9],12,0x8b44f7af);
	c=R1(c,d,a,b,X[i+10],17,0xffff5bb1);
	b=R1(b,c,d,a,X[i+11],22,0x895cd7be);
	a=R1(a,b,c,d,X[i+12],7 ,0x6b901122);
	d=R1(d,a,b,c,X[i+13],12,0xfd987193);
	c=R1(c,d,a,b,X[i+14],17,0xa679438e);
	b=R1(b,c,d,a,X[i+15],22,0x49b40821);

	a=R2(a,b,c,d,X[i+ 1],5 ,0xf61e2562);
	d=R2(d,a,b,c,X[i+ 6],9 ,0xc040b340);
	c=R2(c,d,a,b,X[i+11],14,0x265e5a51);
	b=R2(b,c,d,a,X[i+ 0],20,0xe9b6c7aa);
	a=R2(a,b,c,d,X[i+ 5],5 ,0xd62f105d);
	d=R2(d,a,b,c,X[i+10],9 , 0x2441453);
	c=R2(c,d,a,b,X[i+15],14,0xd8a1e681);
	b=R2(b,c,d,a,X[i+ 4],20,0xe7d3fbc8);
	a=R2(a,b,c,d,X[i+ 9],5 ,0x21e1cde6);
	d=R2(d,a,b,c,X[i+14],9 ,0xc33707d6);
	c=R2(c,d,a,b,X[i+ 3],14,0xf4d50d87);
	b=R2(b,c,d,a,X[i+ 8],20,0x455a14ed);
	a=R2(a,b,c,d,X[i+13],5 ,0xa9e3e905);
	d=R2(d,a,b,c,X[i+ 2],9 ,0xfcefa3f8);
	c=R2(c,d,a,b,X[i+ 7],14,0x676f02d9);
	b=R2(b,c,d,a,X[i+12],20,0x8d2a4c8a);

	a=R3(a,b,c,d,X[i+ 5],4 ,0xfffa3942);
	d=R3(d,a,b,c,X[i+ 8],11,0x8771f681);
	c=R3(c,d,a,b,X[i+11],16,0x6d9d6122);
	b=R3(b,c,d,a,X[i+14],23,0xfde5380c);
	a=R3(a,b,c,d,X[i+ 1],4 ,0xa4beea44);
	d=R3(d,a,b,c,X[i+ 4],11,0x4bdecfa9);
	c=R3(c,d,a,b,X[i+ 7],16,0xf6bb4b60);
	b=R3(b,c,d,a,X[i+10],23,0xbebfbc70);
	a=R3(a,b,c,d,X[i+13],4 ,0x289b7ec6);
	d=R3(d,a,b,c,X[i+ 0],11,0xeaa127fa);
	c=R3(c,d,a,b,X[i+ 3],16,0xd4ef3085);
	b=R3(b,c,d,a,X[i+ 6],23, 0x4881d05);
	a=R3(a,b,c,d,X[i+ 9],4 ,0xd9d4d039);
	d=R3(d,a,b,c,X[i+12],11,0xe6db99e5);
	c=R3(c,d,a,b,X[i+15],16,0x1fa27cf8);
	b=R3(b,c,d,a,X[i+ 2],23,0xc4ac5665);

	a=R4(a,b,c,d,X[i+ 0],6 ,0xf4292244);
	d=R4(d,a,b,c,X[i+ 7],10,0x432aff97);
	c=R4(c,d,a,b,X[i+14],15,0xab9423a7);
	b=R4(b,c,d,a,X[i+ 5],21,0xfc93a039);
	a=R4(a,b,c,d,X[i+12],6 ,0x655b59c3);
	d=R4(d,a,b,c,X[i+ 3],10,0x8f0ccc92);
	c=R4(c,d,a,b,X[i+10],15,0xffeff47d);
	b=R4(b,c,d,a,X[i+ 1],21,0x85845dd1);
	a=R4(a,b,c,d,X[i+ 8],6 ,0x6fa87e4f);
	d=R4(d,a,b,c,X[i+15],10,0xfe2ce6e0);
	c=R4(c,d,a,b,X[i+ 6],15,0xa3014314);
	b=R4(b,c,d,a,X[i+13],21,0x4e0811a1);
	a=R4(a,b,c,d,X[i+ 4],6 ,0xf7537e82);
	d=R4(d,a,b,c,X[i+11],10,0xbd3af235);
	c=R4(c,d,a,b,X[i+ 2],15,0x2ad7d2bb);
	b=R4(b,c,d,a,X[i+ 9],21,0xeb86d391);

	a=add(a,aO); b=add(b,bO); c=add(c,cO); d=add(d,dO);
	}
	return hex(a)+hex(b)+hex(c)+hex(d);
	}
/* jrw note - end of Paul Johnston code */