MD5算法在JS中的实现
Paul Johnston
/**********************************************************
* md5.js
*
* A JavaScript implementation of the RSA Data Security, Inc. MD5
* Message-Digest Algorithm.
*
* Copyright (C) Paul Johnston 1999. Distributed under the LGPL.
***********************************************************/
/* to convert strings to a list of ascii values */
var sAscii = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
var sAscii = sAscii + "[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
/* convert integer to hex string */
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;
}