/*
* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
* Digest Algorithm, as defined in RFC 1321.
* Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
* Distributed under the BSD License
* See http://pajhome.org.uk/crypt/md5 for more info.
*/
/*
* Configurable variables. You may need to tweak these to be compatible with
* the server-side, but the defaults work in most cases.
*/
var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */
/*
* These are the functions you'll usually want to call They take string
* arguments and return either hex or base-64 encoded strings
*/
function hex_md5(s) {
return rstr2hex(rstr_md5(str2rstr_utf8(s)));
}
function b64_md5(s) {
return rstr2b64(rstr_md5(str2rstr_utf8(s)));
}
function any_md5(s, e) {
return rstr2any(rstr_md5(str2rstr_utf8(s)), e);
}
function hex_hmac_md5(k, d) {
return rstr2hex(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)));
}
function b64_hmac_md5(k, d) {
return rstr2b64(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)));
}
function any_hmac_md5(k, d, e) {
return rstr2any(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)), e);
}
/*
* Perform a simple self-test to see if the VM is working
*/
function md5_vm_test() {
return hex_md5("abc").toLowerCase() == "900150983cd24fb0d6963f7d28e17f72";
}
/*
* Calculate the MD5 of a raw string
*/
function rstr_md5(s) {
return binl2rstr(binl_md5(rstr2binl(s), s.length * 8));
}
/*
* Calculate the HMAC-MD5, of a key and some data (raw strings)
*/
function rstr_hmac_md5(key, data) {
var bkey = rstr2binl(key);
if (bkey.length > 16)
bkey = binl_md5(bkey, key.length * 8);
var ipad = Array(16), opad = Array(16);
for ( var i = 0; i < 16; i++) {
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}
var hash = binl_md5(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
return binl2rstr(binl_md5(opad.concat(hash), 512 + 128));
}
/*
* Convert a raw string to a hex string
*/
function rstr2hex(input) {
try {
hexcase;
} catch (e) {
hexcase = 0;
}
var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var output = "";
var x;
for ( var i = 0; i < input.length; i++) {
x = input.charCodeAt(i);
output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt(x & 0x0F);
}
return output;
}
/*
* Convert a raw string to a base-64 string
*/
function rstr2b64(input) {
try {
b64pad;
} catch (e) {
b64pad = '';
}
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var output = "";
var len = input.length;
for ( var i = 0; i < len; i += 3) {
var triplet = (input.charCodeAt(i) << 16)
| (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0)
| (i + 2 < len ? input.charCodeAt(i + 2) : 0);
for ( var j = 0; j < 4; j++) {
if (i * 8 + j * 6 > input.length * 8)
output += b64pad;
else
output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F);
}
}
return output;
}
/*
* Convert a raw string to an arbitrary string encoding
*/
function rstr2any(input, encoding) {
var divisor = encoding.length;
var i, j, q, x, quotient;
/* Convert to an array of 16-bit big-endian values, forming the dividend */
var dividend = Array(Math.ceil(input.length / 2));
for (i = 0; i < dividend.length; i++) {
dividend[i] = (input.charCodeAt(i * 2) << 8)
| input.charCodeAt(i * 2 + 1);
}
/*
* Repeatedly perform a long division. The binary array forms the dividend,
* the length of the encoding is the divisor. Once computed, the quotient
* forms the dividend for the next step. All remainders are stored for later
* use.
*/
var full_length = Math.ceil(input.length * 8
/ (Math.log(encoding.length) / Math.log(2)));
var remainders = Array(full_length);
for (j = 0; j < full_length; j++) {
quotient = Array();
x = 0;
for (i = 0; i < dividend.length; i++) {
x = (x << 16) + dividend[i];
q = Math.floor(x / divisor);
x -= q * divisor;
if (quotient.length > 0 || q > 0)
quotient[quotient.length] = q;
}
remainders[j] = x;
dividend = quotient;
}
/* Convert the remainders to the output string */
var output = "";
for (i = remainders.length - 1; i >= 0; i--)
output += encoding.charAt(remainders[i]);
return output;
}
/*
* Encode a string as utf-8. For efficiency, this assumes the input is valid
* utf-16.
*/
function str2rstr_utf8(input) {
var output = "";
var i = -1;
var x, y;
while (++i < input.length) {
/* Decode utf-16 surrogate pairs */
x = input.charCodeAt(i);
y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
i++;
}
/* Encode output as utf-8 */
if (x <= 0x7F)
output += String.fromCharCode(x);
else if (x <= 0x7FF)
output += String.fromCharCode(0xC0 | ((x >>> 6) & 0x1F),
0x80 | (x & 0x3F));
else if (x <= 0xFFFF)
output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F),
0x80 | ((x >>> 6) & 0x3F), 0x80 | (x & 0x3F));
else if (x <= 0x1FFFFF)
output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07),
0x80 | ((x >>> 12) & 0x3F), 0x80 | ((x >>> 6) & 0x3F),
0x80 | (x & 0x3F));
}
return output;
}
/*
* Encode a string as utf-16
*/
function str2rstr_utf16le(input) {
var output = "";
for ( var i = 0; i < input.length; i++)
output += String.fromCharCode(input.charCodeAt(i) & 0xFF, (input
.charCodeAt(i) >>> 8) & 0xFF);
return output;
}
function str2rstr_utf16be(input) {
var output = "";
for ( var i = 0; i < input.length; i++)
output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input
.charCodeAt(i) & 0xFF);
return output;
}
/*
* Convert a raw string to an array of little-endian words Characters >255 have
* their high-byte silently ignored.
*/
function rstr2binl(input) {
var output = Array(input.length >> 2);
for ( var i = 0; i < output.length; i++)
output[i] = 0;
for ( var i = 0; i < input.length * 8; i += 8)
output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32);
return output;
}
/*
* Convert an array of little-endian words to a string
*/
function binl2rstr(input) {
var output = "";
for ( var i = 0; i < input.length * 32; i += 8)
output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF);
return output;
}
/*
* Calculate the MD5 of an array of little-endian words, and a bit length.
*/
function binl_md5(x, len) {
/* append padding */
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for ( var i = 0; i < x.length; i += 16) {
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
a = md5_gg(a, b, c, d, x[i + 1],
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