Binary file scripts/minifier/compiler.jar has changed

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/minifier/minify.sh	Wed Sep 03 19:38:05 2014 +0200
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+# This is a helping script to minify HTML/CSS/JavaScript files
+
+# Minify JS for Libervia's OTR - https://github.com/arlolra/otr
+TOOL="yui compressor"
+OTR_INPUT="otr/dep/bigint.js otr/dep/crypto.js otr/dep/eventemitter.js"
+OTR_APPEND="otr/otr.min.js"
+OTR_OUTPUT="otr.min.js"
+
+rm -f $OTR_OUTPUT
+if [[ $TOOL = "closure compiler" ]]; then
+    # use https://developers.google.com/closure/compiler/
+    # requires Java 7 SDK + compiler.jar in the current directory
+    echo "Minifying $OTR_INPUT with closure compiler"
+    java -jar compiler.jar  --js_output_file=$OTR_OUTPUT $OTR_INPUT
+else
+    for FILE in $OTR_INPUT; do
+        if [[ $TOOL = "slimit" ]]; then
+            # use https://pypi.python.org/pypi/slimit
+            echo "Minifying $FILE with slimit"
+            slimit $FILE >> $OTR_OUTPUT
+        elif [[ $TOOL = "yui compressor" ]]; then
+            # use https://pypi.python.org/pypi/yuicompressor
+            echo "Minifying $FILE with YUI compressor"
+            yuicompressor -o tmp.js $FILE
+            cat tmp.js >> $OTR_OUTPUT
+            rm -f tmp.js
+        fi
+    done
+fi
+cat $OTR_APPEND >> $OTR_OUTPUT
+echo "The file $OTR_OUTPUT includes:
+    - minified versions of the following otr.js dependencies:
+      $OTR_INPUT
+      The following minification tool has been used: $TOOL
+    - minified version of otr.js taken from the project homepage
+
+All original files can be retrieved from otr.js repository:
+    https://github.com/arlolra/otr/tree/master/build
+" > "$OTR_OUTPUT"_README
+
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/minifier/otr/dep/bigint.js	Wed Sep 03 19:38:05 2014 +0200
@@ -0,0 +1,1705 @@
+;(function (root, factory) {
+
+  if (typeof define === 'function' && define.amd) {
+    define(factory.bind(root, root.crypto || root.msCrypto))
+  } else if (typeof module !== 'undefined' && module.exports) {
+    module.exports = factory(require('crypto'))
+  } else {
+    root.BigInt = factory(root.crypto || root.msCrypto)
+  }
+
+}(this, function (crypto) {
+
+  ////////////////////////////////////////////////////////////////////////////////////////
+  // Big Integer Library v. 5.5
+  // Created 2000, last modified 2013
+  // Leemon Baird
+  // www.leemon.com
+  //
+  // Version history:
+  // v 5.5  17 Mar 2013
+  //   - two lines of a form like "if (x<0) x+=n" had the "if" changed to "while" to
+  //     handle the case when x<-n. (Thanks to James Ansell for finding that bug)
+  // v 5.4  3 Oct 2009
+  //   - added "var i" to greaterShift() so i is not global. (Thanks to Péter Szabó for finding that bug)
+  //
+  // v 5.3  21 Sep 2009
+  //   - added randProbPrime(k) for probable primes
+  //   - unrolled loop in mont_ (slightly faster)
+  //   - millerRabin now takes a bigInt parameter rather than an int
+  //
+  // v 5.2  15 Sep 2009
+  //   - fixed capitalization in call to int2bigInt in randBigInt
+  //     (thanks to Emili Evripidou, Reinhold Behringer, and Samuel Macaleese for finding that bug)
+  //
+  // v 5.1  8 Oct 2007 
+  //   - renamed inverseModInt_ to inverseModInt since it doesn't change its parameters
+  //   - added functions GCD and randBigInt, which call GCD_ and randBigInt_
+  //   - fixed a bug found by Rob Visser (see comment with his name below)
+  //   - improved comments
+  //
+  // This file is public domain.   You can use it for any purpose without restriction.
+  // I do not guarantee that it is correct, so use it at your own risk.  If you use 
+  // it for something interesting, I'd appreciate hearing about it.  If you find 
+  // any bugs or make any improvements, I'd appreciate hearing about those too.
+  // It would also be nice if my name and URL were left in the comments.  But none 
+  // of that is required.
+  //
+  // This code defines a bigInt library for arbitrary-precision integers.
+  // A bigInt is an array of integers storing the value in chunks of bpe bits, 
+  // little endian (buff[0] is the least significant word).
+  // Negative bigInts are stored two's complement.  Almost all the functions treat
+  // bigInts as nonnegative.  The few that view them as two's complement say so
+  // in their comments.  Some functions assume their parameters have at least one 
+  // leading zero element. Functions with an underscore at the end of the name put
+  // their answer into one of the arrays passed in, and have unpredictable behavior 
+  // in case of overflow, so the caller must make sure the arrays are big enough to 
+  // hold the answer.  But the average user should never have to call any of the 
+  // underscored functions.  Each important underscored function has a wrapper function 
+  // of the same name without the underscore that takes care of the details for you.  
+  // For each underscored function where a parameter is modified, that same variable 
+  // must not be used as another argument too.  So, you cannot square x by doing 
+  // multMod_(x,x,n).  You must use squareMod_(x,n) instead, or do y=dup(x); multMod_(x,y,n).
+  // Or simply use the multMod(x,x,n) function without the underscore, where
+  // such issues never arise, because non-underscored functions never change
+  // their parameters; they always allocate new memory for the answer that is returned.
+  //
+  // These functions are designed to avoid frequent dynamic memory allocation in the inner loop.
+  // For most functions, if it needs a BigInt as a local variable it will actually use
+  // a global, and will only allocate to it only when it's not the right size.  This ensures
+  // that when a function is called repeatedly with same-sized parameters, it only allocates
+  // memory on the first call.
+  //
+  // Note that for cryptographic purposes, the calls to Math.random() must 
+  // be replaced with calls to a better pseudorandom number generator.
+  //
+  // In the following, "bigInt" means a bigInt with at least one leading zero element,
+  // and "integer" means a nonnegative integer less than radix.  In some cases, integer 
+  // can be negative.  Negative bigInts are 2s complement.
+  // 
+  // The following functions do not modify their inputs.
+  // Those returning a bigInt, string, or Array will dynamically allocate memory for that value.
+  // Those returning a boolean will return the integer 0 (false) or 1 (true).
+  // Those returning boolean or int will not allocate memory except possibly on the first 
+  // time they're called with a given parameter size.
+  // 
+  // bigInt  add(x,y)               //return (x+y) for bigInts x and y.  
+  // bigInt  addInt(x,n)            //return (x+n) where x is a bigInt and n is an integer.
+  // string  bigInt2str(x,base)     //return a string form of bigInt x in a given base, with 2 <= base <= 95
+  // int     bitSize(x)             //return how many bits long the bigInt x is, not counting leading zeros
+  // bigInt  dup(x)                 //return a copy of bigInt x
+  // boolean equals(x,y)            //is the bigInt x equal to the bigint y?
+  // boolean equalsInt(x,y)         //is bigint x equal to integer y?
+  // bigInt  expand(x,n)            //return a copy of x with at least n elements, adding leading zeros if needed
+  // Array   findPrimes(n)          //return array of all primes less than integer n
+  // bigInt  GCD(x,y)               //return greatest common divisor of bigInts x and y (each with same number of elements).
+  // boolean greater(x,y)           //is x>y?  (x and y are nonnegative bigInts)
+  // boolean greaterShift(x,y,shift)//is (x <<(shift*bpe)) > y?
+  // bigInt  int2bigInt(t,n,m)      //return a bigInt equal to integer t, with at least n bits and m array elements
+  // bigInt  inverseMod(x,n)        //return (x**(-1) mod n) for bigInts x and n.  If no inverse exists, it returns null
+  // int     inverseModInt(x,n)     //return x**(-1) mod n, for integers x and n.  Return 0 if there is no inverse
+  // boolean isZero(x)              //is the bigInt x equal to zero?
+  // boolean millerRabin(x,b)       //does one round of Miller-Rabin base integer b say that bigInt x is possibly prime? (b is bigInt, 1<b<x)
+  // boolean millerRabinInt(x,b)    //does one round of Miller-Rabin base integer b say that bigInt x is possibly prime? (b is int,    1<b<x)
+  // bigInt  mod(x,n)               //return a new bigInt equal to (x mod n) for bigInts x and n.
+  // int     modInt(x,n)            //return x mod n for bigInt x and integer n.
+  // bigInt  mult(x,y)              //return x*y for bigInts x and y. This is faster when y<x.
+  // bigInt  multMod(x,y,n)         //return (x*y mod n) for bigInts x,y,n.  For greater speed, let y<x.
+  // boolean negative(x)            //is bigInt x negative?
+  // bigInt  powMod(x,y,n)          //return (x**y mod n) where x,y,n are bigInts and ** is exponentiation.  0**0=1. Faster for odd n.
+  // bigInt  randBigInt(n,s)        //return an n-bit random BigInt (n>=1).  If s=1, then the most significant of those n bits is set to 1.
+  // bigInt  randTruePrime(k)       //return a new, random, k-bit, true prime bigInt using Maurer's algorithm.
+  // bigInt  randProbPrime(k)       //return a new, random, k-bit, probable prime bigInt (probability it's composite less than 2^-80).
+  // bigInt  str2bigInt(s,b,n,m)    //return a bigInt for number represented in string s in base b with at least n bits and m array elements
+  // bigInt  sub(x,y)               //return (x-y) for bigInts x and y.  Negative answers will be 2s complement
+  // bigInt  trim(x,k)              //return a copy of x with exactly k leading zero elements
+  //
+  //
+  // The following functions each have a non-underscored version, which most users should call instead.
+  // These functions each write to a single parameter, and the caller is responsible for ensuring the array 
+  // passed in is large enough to hold the result. 
+  //
+  // void    addInt_(x,n)          //do x=x+n where x is a bigInt and n is an integer
+  // void    add_(x,y)             //do x=x+y for bigInts x and y
+  // void    copy_(x,y)            //do x=y on bigInts x and y
+  // void    copyInt_(x,n)         //do x=n on bigInt x and integer n
+  // void    GCD_(x,y)             //set x to the greatest common divisor of bigInts x and y, (y is destroyed).  (This never overflows its array).
+  // boolean inverseMod_(x,n)      //do x=x**(-1) mod n, for bigInts x and n. Returns 1 (0) if inverse does (doesn't) exist
+  // void    mod_(x,n)             //do x=x mod n for bigInts x and n. (This never overflows its array).
+  // void    mult_(x,y)            //do x=x*y for bigInts x and y.
+  // void    multMod_(x,y,n)       //do x=x*y  mod n for bigInts x,y,n.
+  // void    powMod_(x,y,n)        //do x=x**y mod n, where x,y,n are bigInts (n is odd) and ** is exponentiation.  0**0=1.
+  // void    randBigInt_(b,n,s)    //do b = an n-bit random BigInt. if s=1, then nth bit (most significant bit) is set to 1. n>=1.
+  // void    randTruePrime_(ans,k) //do ans = a random k-bit true random prime (not just probable prime) with 1 in the msb.
+  // void    sub_(x,y)             //do x=x-y for bigInts x and y. Negative answers will be 2s complement.
+  //
+  // The following functions do NOT have a non-underscored version. 
+  // They each write a bigInt result to one or more parameters.  The caller is responsible for
+  // ensuring the arrays passed in are large enough to hold the results. 
+  //
+  // void addShift_(x,y,ys)       //do x=x+(y<<(ys*bpe))
+  // void carry_(x)               //do carries and borrows so each element of the bigInt x fits in bpe bits.
+  // void divide_(x,y,q,r)        //divide x by y giving quotient q and remainder r
+  // int  divInt_(x,n)            //do x=floor(x/n) for bigInt x and integer n, and return the remainder. (This never overflows its array).
+  // int  eGCD_(x,y,d,a,b)        //sets a,b,d to positive bigInts such that d = GCD_(x,y) = a*x-b*y
+  // void halve_(x)               //do x=floor(|x|/2)*sgn(x) for bigInt x in 2's complement.  (This never overflows its array).
+  // void leftShift_(x,n)         //left shift bigInt x by n bits.  n<bpe.
+  // void linComb_(x,y,a,b)       //do x=a*x+b*y for bigInts x and y and integers a and b
+  // void linCombShift_(x,y,b,ys) //do x=x+b*(y<<(ys*bpe)) for bigInts x and y, and integers b and ys
+  // void mont_(x,y,n,np)         //Montgomery multiplication (see comments where the function is defined)
+  // void multInt_(x,n)           //do x=x*n where x is a bigInt and n is an integer.
+  // void rightShift_(x,n)        //right shift bigInt x by n bits. (This never overflows its array).
+  // void squareMod_(x,n)         //do x=x*x  mod n for bigInts x,n
+  // void subShift_(x,y,ys)       //do x=x-(y<<(ys*bpe)). Negative answers will be 2s complement.
+  //
+  // The following functions are based on algorithms from the _Handbook of Applied Cryptography_
+  //    powMod_()           = algorithm 14.94, Montgomery exponentiation
+  //    eGCD_,inverseMod_() = algorithm 14.61, Binary extended GCD_
+  //    GCD_()              = algorothm 14.57, Lehmer's algorithm
+  //    mont_()             = algorithm 14.36, Montgomery multiplication
+  //    divide_()           = algorithm 14.20  Multiple-precision division
+  //    squareMod_()        = algorithm 14.16  Multiple-precision squaring
+  //    randTruePrime_()    = algorithm  4.62, Maurer's algorithm
+  //    millerRabin()       = algorithm  4.24, Miller-Rabin algorithm
+  //
+  // Profiling shows:
+  //     randTruePrime_() spends:
+  //         10% of its time in calls to powMod_()
+  //         85% of its time in calls to millerRabin()
+  //     millerRabin() spends:
+  //         99% of its time in calls to powMod_()   (always with a base of 2)
+  //     powMod_() spends:
+  //         94% of its time in calls to mont_()  (almost always with x==y)
+  //
+  // This suggests there are several ways to speed up this library slightly:
+  //     - convert powMod_ to use a Montgomery form of k-ary window (or maybe a Montgomery form of sliding window)
+  //         -- this should especially focus on being fast when raising 2 to a power mod n
+  //     - convert randTruePrime_() to use a minimum r of 1/3 instead of 1/2 with the appropriate change to the test
+  //     - tune the parameters in randTruePrime_(), including c, m, and recLimit
+  //     - speed up the single loop in mont_() that takes 95% of the runtime, perhaps by reducing checking
+  //       within the loop when all the parameters are the same length.
+  //
+  // There are several ideas that look like they wouldn't help much at all:
+  //     - replacing trial division in randTruePrime_() with a sieve (that speeds up something taking almost no time anyway)
+  //     - increase bpe from 15 to 30 (that would help if we had a 32*32->64 multiplier, but not with JavaScript's 32*32->32)
+  //     - speeding up mont_(x,y,n,np) when x==y by doing a non-modular, non-Montgomery square
+  //       followed by a Montgomery reduction.  The intermediate answer will be twice as long as x, so that
+  //       method would be slower.  This is unfortunate because the code currently spends almost all of its time
+  //       doing mont_(x,x,...), both for randTruePrime_() and powMod_().  A faster method for Montgomery squaring
+  //       would have a large impact on the speed of randTruePrime_() and powMod_().  HAC has a couple of poorly-worded
+  //       sentences that seem to imply it's faster to do a non-modular square followed by a single
+  //       Montgomery reduction, but that's obviously wrong.
+  ////////////////////////////////////////////////////////////////////////////////////////
+
+  //globals
+
+  // The number of significant bits in the fraction of a JavaScript
+  // floating-point number is 52, independent of platform.
+  // See: https://github.com/arlolra/otr/issues/41
+
+  var bpe = 26;          // bits stored per array element
+  var radix = 1 << bpe;  // equals 2^bpe
+  var mask = radix - 1;  // AND this with an array element to chop it down to bpe bits
+
+  //the digits for converting to different bases
+  var digitsStr='0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_=!@#$%^&*()[]{}|;:,.<>/?`~ \\\'\"+-';
+
+  var one=int2bigInt(1,1,1);     //constant used in powMod_()
+
+  //the following global variables are scratchpad memory to 
+  //reduce dynamic memory allocation in the inner loop
+  var t=new Array(0);
+  var ss=t;       //used in mult_()
+  var s0=t;       //used in multMod_(), squareMod_()
+  var s1=t;       //used in powMod_(), multMod_(), squareMod_()
+  var s2=t;       //used in powMod_(), multMod_()
+  var s3=t;       //used in powMod_()
+  var s4=t, s5=t; //used in mod_()
+  var s6=t;       //used in bigInt2str()
+  var s7=t;       //used in powMod_()
+  var T=t;        //used in GCD_()
+  var sa=t;       //used in mont_()
+  var mr_x1=t, mr_r=t, mr_a=t;                                      //used in millerRabin()
+  var eg_v=t, eg_u=t, eg_A=t, eg_B=t, eg_C=t, eg_D=t;               //used in eGCD_(), inverseMod_()
+  var md_q1=t, md_q2=t, md_q3=t, md_r=t, md_r1=t, md_r2=t, md_tt=t; //used in mod_()
+
+  var primes=t, pows=t, s_i=t, s_i2=t, s_R=t, s_rm=t, s_q=t, s_n1=t;
+  var s_a=t, s_r2=t, s_n=t, s_b=t, s_d=t, s_x1=t, s_x2=t, s_aa=t; //used in randTruePrime_()
+    
+  var rpprb=t; //used in randProbPrimeRounds() (which also uses "primes")
+
+  ////////////////////////////////////////////////////////////////////////////////////////
+
+
+  //return array of all primes less than integer n
+  function findPrimes(n) {
+    var i,s,p,ans;
+    s=new Array(n);
+    for (i=0;i<n;i++)
+      s[i]=0;
+    s[0]=2;
+    p=0;    //first p elements of s are primes, the rest are a sieve
+    for(;s[p]<n;) {                  //s[p] is the pth prime
+      for(i=s[p]*s[p]; i<n; i+=s[p]) //mark multiples of s[p]
+        s[i]=1;
+      p++;
+      s[p]=s[p-1]+1;
+      for(; s[p]<n && s[s[p]]; s[p]++); //find next prime (where s[p]==0)
+    }
+    ans=new Array(p);
+    for(i=0;i<p;i++)
+      ans[i]=s[i];
+    return ans;
+  }
+
+
+  //does a single round of Miller-Rabin base b consider x to be a possible prime?
+  //x is a bigInt, and b is an integer, with b<x
+  function millerRabinInt(x,b) {
+    if (mr_x1.length!=x.length) {
+      mr_x1=dup(x);
+      mr_r=dup(x);
+      mr_a=dup(x);
+    }
+
+    copyInt_(mr_a,b);
+    return millerRabin(x,mr_a);
+  }
+
+  //does a single round of Miller-Rabin base b consider x to be a possible prime?
+  //x and b are bigInts with b<x
+  function millerRabin(x,b) {
+    var i,j,k,s;
+
+    if (mr_x1.length!=x.length) {
+      mr_x1=dup(x);
+      mr_r=dup(x);
+      mr_a=dup(x);
+    }
+
+    copy_(mr_a,b);
+    copy_(mr_r,x);
+    copy_(mr_x1,x);
+
+    addInt_(mr_r,-1);
+    addInt_(mr_x1,-1);
+
+    //s=the highest power of two that divides mr_r
+
+    /*
+    k=0;
+    for (i=0;i<mr_r.length;i++)
+      for (j=1;j<mask;j<<=1)
+        if (x[i] & j) {
+          s=(k<mr_r.length+bpe ? k : 0); 
+           i=mr_r.length;
+           j=mask;
+        } else
+          k++;
+    */
+
+    /* http://www.javascripter.net/math/primes/millerrabinbug-bigint54.htm */
+    if (isZero(mr_r)) return 0;
+    for (k=0; mr_r[k]==0; k++);
+    for (i=1,j=2; mr_r[k]%j==0; j*=2,i++ );
+    s = k*bpe + i - 1;
+    /* end */
+
+    if (s)                
+      rightShift_(mr_r,s);
+
+    powMod_(mr_a,mr_r,x);
+
+    if (!equalsInt(mr_a,1) && !equals(mr_a,mr_x1)) {
+      j=1;
+      while (j<=s-1 && !equals(mr_a,mr_x1)) {
+        squareMod_(mr_a,x);
+        if (equalsInt(mr_a,1)) {
+          return 0;
+        }
+        j++;
+      }
+      if (!equals(mr_a,mr_x1)) {
+        return 0;
+      }
+    }
+    return 1;  
+  }
+
+  //returns how many bits long the bigInt is, not counting leading zeros.
+  function bitSize(x) {
+    var j,z,w;
+    for (j=x.length-1; (x[j]==0) && (j>0); j--);
+    for (z=0,w=x[j]; w; (w>>=1),z++);
+    z+=bpe*j;
+    return z;
+  }
+
+  //return a copy of x with at least n elements, adding leading zeros if needed
+  function expand(x,n) {
+    var ans=int2bigInt(0,(x.length>n ? x.length : n)*bpe,0);
+    copy_(ans,x);
+    return ans;
+  }
+
+  //return a k-bit true random prime using Maurer's algorithm.
+  function randTruePrime(k) {
+    var ans=int2bigInt(0,k,0);
+    randTruePrime_(ans,k);
+    return trim(ans,1);
+  }
+
+  //return a k-bit random probable prime with probability of error < 2^-80
+  function randProbPrime(k) {
+    if (k>=600) return randProbPrimeRounds(k,2); //numbers from HAC table 4.3
+    if (k>=550) return randProbPrimeRounds(k,4);
+    if (k>=500) return randProbPrimeRounds(k,5);
+    if (k>=400) return randProbPrimeRounds(k,6);
+    if (k>=350) return randProbPrimeRounds(k,7);
+    if (k>=300) return randProbPrimeRounds(k,9);
+    if (k>=250) return randProbPrimeRounds(k,12); //numbers from HAC table 4.4
+    if (k>=200) return randProbPrimeRounds(k,15);
+    if (k>=150) return randProbPrimeRounds(k,18);
+    if (k>=100) return randProbPrimeRounds(k,27);
+                return randProbPrimeRounds(k,40); //number from HAC remark 4.26 (only an estimate)
+  }
+
+  //return a k-bit probable random prime using n rounds of Miller Rabin (after trial division with small primes)
+  function randProbPrimeRounds(k,n) {
+    var ans, i, divisible, B; 
+    B=30000;  //B is largest prime to use in trial division
+    ans=int2bigInt(0,k,0);
+    
+    //optimization: try larger and smaller B to find the best limit.
+    
+    if (primes.length==0)
+      primes=findPrimes(30000);  //check for divisibility by primes <=30000
+
+    if (rpprb.length!=ans.length)
+      rpprb=dup(ans);
+
+    for (;;) { //keep trying random values for ans until one appears to be prime
+      //optimization: pick a random number times L=2*3*5*...*p, plus a 
+      //   random element of the list of all numbers in [0,L) not divisible by any prime up to p.
+      //   This can reduce the amount of random number generation.
+      
+      randBigInt_(ans,k,0); //ans = a random odd number to check
+      ans[0] |= 1; 
+      divisible=0;
+    
+      //check ans for divisibility by small primes up to B
+      for (i=0; (i<primes.length) && (primes[i]<=B); i++)
+        if (modInt(ans,primes[i])==0 && !equalsInt(ans,primes[i])) {
+          divisible=1;
+          break;
+        }      
+      
+      //optimization: change millerRabin so the base can be bigger than the number being checked, then eliminate the while here.
+      
+      //do n rounds of Miller Rabin, with random bases less than ans
+      for (i=0; i<n && !divisible; i++) {
+        randBigInt_(rpprb,k,0);
+        while(!greater(ans,rpprb)) //pick a random rpprb that's < ans
+          randBigInt_(rpprb,k,0);
+        if (!millerRabin(ans,rpprb))
+          divisible=1;
+      }
+      
+      if(!divisible)
+        return ans;
+    }  
+  }
+
+  //return a new bigInt equal to (x mod n) for bigInts x and n.
+  function mod(x,n) {
+    var ans=dup(x);
+    mod_(ans,n);
+    return trim(ans,1);
+  }
+
+  //return (x+n) where x is a bigInt and n is an integer.
+  function addInt(x,n) {
+    var ans=expand(x,x.length+1);
+    addInt_(ans,n);
+    return trim(ans,1);
+  }
+
+  //return x*y for bigInts x and y. This is faster when y<x.
+  function mult(x,y) {
+    var ans=expand(x,x.length+y.length);
+    mult_(ans,y);
+    return trim(ans,1);
+  }
+
+  //return (x**y mod n) where x,y,n are bigInts and ** is exponentiation.  0**0=1. Faster for odd n.
+  function powMod(x,y,n) {
+    var ans=expand(x,n.length);  
+    powMod_(ans,trim(y,2),trim(n,2),0);  //this should work without the trim, but doesn't
+    return trim(ans,1);
+  }
+
+  //return (x-y) for bigInts x and y.  Negative answers will be 2s complement
+  function sub(x,y) {
+    var ans=expand(x,(x.length>y.length ? x.length+1 : y.length+1)); 
+    sub_(ans,y);
+    return trim(ans,1);
+  }
+
+  //return (x+y) for bigInts x and y.  
+  function add(x,y) {
+    var ans=expand(x,(x.length>y.length ? x.length+1 : y.length+1)); 
+    add_(ans,y);
+    return trim(ans,1);
+  }
+
+  //return (x**(-1) mod n) for bigInts x and n.  If no inverse exists, it returns null
+  function inverseMod(x,n) {
+    var ans=expand(x,n.length); 
+    var s;
+    s=inverseMod_(ans,n);
+    return s ? trim(ans,1) : null;
+  }
+
+  //return (x*y mod n) for bigInts x,y,n.  For greater speed, let y<x.
+  function multMod(x,y,n) {
+    var ans=expand(x,n.length);
+    multMod_(ans,y,n);
+    return trim(ans,1);
+  }
+
+  //generate a k-bit true random prime using Maurer's algorithm,
+  //and put it into ans.  The bigInt ans must be large enough to hold it.
+  function randTruePrime_(ans,k) {
+    var c,w,m,pm,dd,j,r,B,divisible,z,zz,recSize,recLimit;
+
+    if (primes.length==0)
+      primes=findPrimes(30000);  //check for divisibility by primes <=30000
+
+    if (pows.length==0) {
+      pows=new Array(512);
+      for (j=0;j<512;j++) {
+        pows[j]=Math.pow(2,j/511.0-1.0);
+      }
+    }
+
+    //c and m should be tuned for a particular machine and value of k, to maximize speed
+    c=0.1;  //c=0.1 in HAC
+    m=20;   //generate this k-bit number by first recursively generating a number that has between k/2 and k-m bits
+    recLimit=20; //stop recursion when k <=recLimit.  Must have recLimit >= 2
+
+    if (s_i2.length!=ans.length) {
+      s_i2=dup(ans);
+      s_R =dup(ans);
+      s_n1=dup(ans);
+      s_r2=dup(ans);
+      s_d =dup(ans);
+      s_x1=dup(ans);
+      s_x2=dup(ans);
+      s_b =dup(ans);
+      s_n =dup(ans);
+      s_i =dup(ans);
+      s_rm=dup(ans);
+      s_q =dup(ans);
+      s_a =dup(ans);
+      s_aa=dup(ans);
+    }
+
+    if (k <= recLimit) {  //generate small random primes by trial division up to its square root
+      pm=(1<<((k+2)>>1))-1; //pm is binary number with all ones, just over sqrt(2^k)
+      copyInt_(ans,0);
+      for (dd=1;dd;) {
+        dd=0;
+        ans[0]= 1 | (1<<(k-1)) | randomBitInt(k);  //random, k-bit, odd integer, with msb 1
+        for (j=1;(j<primes.length) && ((primes[j]&pm)==primes[j]);j++) { //trial division by all primes 3...sqrt(2^k)
+          if (0==(ans[0]%primes[j])) {
+            dd=1;
+            break;
+          }
+        }
+      }
+      carry_(ans);
+      return;
+    }
+
+    B=c*k*k;    //try small primes up to B (or all the primes[] array if the largest is less than B).
+    if (k>2*m)  //generate this k-bit number by first recursively generating a number that has between k/2 and k-m bits
+      for (r=1; k-k*r<=m; )
+        r=pows[randomBitInt(9)];   //r=Math.pow(2,Math.random()-1);
+    else
+      r=0.5;
+
+    //simulation suggests the more complex algorithm using r=.333 is only slightly faster.
+
+    recSize=Math.floor(r*k)+1;
+
+    randTruePrime_(s_q,recSize);
+    copyInt_(s_i2,0);
+    s_i2[Math.floor((k-2)/bpe)] |= (1<<((k-2)%bpe));   //s_i2=2^(k-2)
+    divide_(s_i2,s_q,s_i,s_rm);                        //s_i=floor((2^(k-1))/(2q))
+
+    z=bitSize(s_i);
+
+    for (;;) {
+      for (;;) {  //generate z-bit numbers until one falls in the range [0,s_i-1]
+        randBigInt_(s_R,z,0);
+        if (greater(s_i,s_R))
+          break;
+      }                //now s_R is in the range [0,s_i-1]
+      addInt_(s_R,1);  //now s_R is in the range [1,s_i]
+      add_(s_R,s_i);   //now s_R is in the range [s_i+1,2*s_i]
+
+      copy_(s_n,s_q);
+      mult_(s_n,s_R); 
+      multInt_(s_n,2);
+      addInt_(s_n,1);    //s_n=2*s_R*s_q+1
+      
+      copy_(s_r2,s_R);
+      multInt_(s_r2,2);  //s_r2=2*s_R
+
+      //check s_n for divisibility by small primes up to B
+      for (divisible=0,j=0; (j<primes.length) && (primes[j]<B); j++)
+        if (modInt(s_n,primes[j])==0 && !equalsInt(s_n,primes[j])) {
+          divisible=1;
+          break;
+        }      
+
+      if (!divisible)    //if it passes small primes check, then try a single Miller-Rabin base 2
+        if (!millerRabinInt(s_n,2)) //this line represents 75% of the total runtime for randTruePrime_ 
+          divisible=1;
+
+      if (!divisible) {  //if it passes that test, continue checking s_n
+        addInt_(s_n,-3);
+        for (j=s_n.length-1;(s_n[j]==0) && (j>0); j--);  //strip leading zeros
+        for (zz=0,w=s_n[j]; w; (w>>=1),zz++);
+        zz+=bpe*j;                             //zz=number of bits in s_n, ignoring leading zeros
+        for (;;) {  //generate z-bit numbers until one falls in the range [0,s_n-1]
+          randBigInt_(s_a,zz,0);
+          if (greater(s_n,s_a))
+            break;
+        }                //now s_a is in the range [0,s_n-1]
+        addInt_(s_n,3);  //now s_a is in the range [0,s_n-4]
+        addInt_(s_a,2);  //now s_a is in the range [2,s_n-2]
+        copy_(s_b,s_a);
+        copy_(s_n1,s_n);
+        addInt_(s_n1,-1);
+        powMod_(s_b,s_n1,s_n);   //s_b=s_a^(s_n-1) modulo s_n
+        addInt_(s_b,-1);
+        if (isZero(s_b)) {
+          copy_(s_b,s_a);
+          powMod_(s_b,s_r2,s_n);
+          addInt_(s_b,-1);
+          copy_(s_aa,s_n);
+          copy_(s_d,s_b);
+          GCD_(s_d,s_n);  //if s_b and s_n are relatively prime, then s_n is a prime
+          if (equalsInt(s_d,1)) {
+            copy_(ans,s_aa);
+            return;     //if we've made it this far, then s_n is absolutely guaranteed to be prime
+          }
+        }
+      }
+    }
+  }
+
+  //Return an n-bit random BigInt (n>=1).  If s=1, then the most significant of those n bits is set to 1.
+  function randBigInt(n,s) {
+    var a,b;
+    a=Math.floor((n-1)/bpe)+2; //# array elements to hold the BigInt with a leading 0 element
+    b=int2bigInt(0,0,a);
+    randBigInt_(b,n,s);
+    return b;
+  }
+
+  //Set b to an n-bit random BigInt.  If s=1, then the most significant of those n bits is set to 1.
+  //Array b must be big enough to hold the result. Must have n>=1
+  function randBigInt_(b,n,s) {
+    var i,a;
+    for (i=0;i<b.length;i++)
+      b[i]=0;
+    a=Math.floor((n-1)/bpe)+1; //# array elements to hold the BigInt
+    for (i=0;i<a;i++) {
+      b[i]=randomBitInt(bpe);
+    }
+    b[a-1] &= (2<<((n-1)%bpe))-1;
+    if (s==1)
+      b[a-1] |= (1<<((n-1)%bpe));
+  }
+
+  //Return the greatest common divisor of bigInts x and y (each with same number of elements).
+  function GCD(x,y) {
+    var xc,yc;
+    xc=dup(x);
+    yc=dup(y);
+    GCD_(xc,yc);
+    return xc;
+  }
+
+  //set x to the greatest common divisor of bigInts x and y (each with same number of elements).
+  //y is destroyed.
+  function GCD_(x,y) {
+    var i,xp,yp,A,B,C,D,q,sing,qp;
+    if (T.length!=x.length)
+      T=dup(x);
+
+    sing=1;
+    while (sing) { //while y has nonzero elements other than y[0]
+      sing=0;
+      for (i=1;i<y.length;i++) //check if y has nonzero elements other than 0
+        if (y[i]) {
+          sing=1;
+          break;
+        }
+      if (!sing) break; //quit when y all zero elements except possibly y[0]
+
+      for (i=x.length;!x[i] && i>=0;i--);  //find most significant element of x
+      xp=x[i];
+      yp=y[i];
+      A=1; B=0; C=0; D=1;
+      while ((yp+C) && (yp+D)) {
+        q =Math.floor((xp+A)/(yp+C));
+        qp=Math.floor((xp+B)/(yp+D));
+        if (q!=qp)
+          break;
+        t= A-q*C;   A=C;   C=t;    //  do (A,B,xp, C,D,yp) = (C,D,yp, A,B,xp) - q*(0,0,0, C,D,yp)      
+        t= B-q*D;   B=D;   D=t;
+        t=xp-q*yp; xp=yp; yp=t;
+      }
+      if (B) {
+        copy_(T,x);
+        linComb_(x,y,A,B); //x=A*x+B*y
+        linComb_(y,T,D,C); //y=D*y+C*T
+      } else {
+        mod_(x,y);
+        copy_(T,x);
+        copy_(x,y);
+        copy_(y,T);
+      } 
+    }
+    if (y[0]==0)
+      return;
+    t=modInt(x,y[0]);
+    copyInt_(x,y[0]);
+    y[0]=t;
+    while (y[0]) {
+      x[0]%=y[0];
+      t=x[0]; x[0]=y[0]; y[0]=t;
+    }
+  }
+
+  //do x=x**(-1) mod n, for bigInts x and n.
+  //If no inverse exists, it sets x to zero and returns 0, else it returns 1.
+  //The x array must be at least as large as the n array.
+  function inverseMod_(x,n) {
+    var k=1+2*Math.max(x.length,n.length);
+
+    if(!(x[0]&1)  && !(n[0]&1)) {  //if both inputs are even, then inverse doesn't exist
+      copyInt_(x,0);
+      return 0;
+    }
+
+    if (eg_u.length!=k) {
+      eg_u=new Array(k);
+      eg_v=new Array(k);
+      eg_A=new Array(k);
+      eg_B=new Array(k);
+      eg_C=new Array(k);
+      eg_D=new Array(k);
+    }
+
+    copy_(eg_u,x);
+    copy_(eg_v,n);
+    copyInt_(eg_A,1);
+    copyInt_(eg_B,0);
+    copyInt_(eg_C,0);
+    copyInt_(eg_D,1);
+    for (;;) {
+      while(!(eg_u[0]&1)) {  //while eg_u is even
+        halve_(eg_u);
+        if (!(eg_A[0]&1) && !(eg_B[0]&1)) { //if eg_A==eg_B==0 mod 2
+          halve_(eg_A);
+          halve_(eg_B);      
+        } else {
+          add_(eg_A,n);  halve_(eg_A);
+          sub_(eg_B,x);  halve_(eg_B);
+        }
+      }
+
+      while (!(eg_v[0]&1)) {  //while eg_v is even
+        halve_(eg_v);
+        if (!(eg_C[0]&1) && !(eg_D[0]&1)) { //if eg_C==eg_D==0 mod 2
+          halve_(eg_C);
+          halve_(eg_D);      
+        } else {
+          add_(eg_C,n);  halve_(eg_C);
+          sub_(eg_D,x);  halve_(eg_D);
+        }
+      }
+
+      if (!greater(eg_v,eg_u)) { //eg_v <= eg_u
+        sub_(eg_u,eg_v);
+        sub_(eg_A,eg_C);
+        sub_(eg_B,eg_D);
+      } else {                   //eg_v > eg_u
+        sub_(eg_v,eg_u);
+        sub_(eg_C,eg_A);
+        sub_(eg_D,eg_B);
+      }
+
+      if (equalsInt(eg_u,0)) {
+        while (negative(eg_C)) //make sure answer is nonnegative
+          add_(eg_C,n);
+        copy_(x,eg_C);
+
+        if (!equalsInt(eg_v,1)) { //if GCD_(x,n)!=1, then there is no inverse
+          copyInt_(x,0);
+          return 0;
+        }
+        return 1;
+      }
+    }
+  }
+
+  //return x**(-1) mod n, for integers x and n.  Return 0 if there is no inverse
+  function inverseModInt(x,n) {
+    var a=1,b=0,t;
+    for (;;) {
+      if (x==1) return a;
+      if (x==0) return 0;
+      b-=a*Math.floor(n/x);
+      n%=x;
+
+      if (n==1) return b; //to avoid negatives, change this b to n-b, and each -= to +=
+      if (n==0) return 0;
+      a-=b*Math.floor(x/n);
+      x%=n;
+    }
+  }
+
+  //this deprecated function is for backward compatibility only. 
+  function inverseModInt_(x,n) {
+     return inverseModInt(x,n);
+  }
+
+
+  //Given positive bigInts x and y, change the bigints v, a, and b to positive bigInts such that:
+  //     v = GCD_(x,y) = a*x-b*y
+  //The bigInts v, a, b, must have exactly as many elements as the larger of x and y.
+  function eGCD_(x,y,v,a,b) {
+    var g=0;
+    var k=Math.max(x.length,y.length);
+    if (eg_u.length!=k) {
+      eg_u=new Array(k);
+      eg_A=new Array(k);
+      eg_B=new Array(k);
+      eg_C=new Array(k);
+      eg_D=new Array(k);
+    }
+    while(!(x[0]&1)  && !(y[0]&1)) {  //while x and y both even
+      halve_(x);
+      halve_(y);
+      g++;
+    }
+    copy_(eg_u,x);
+    copy_(v,y);
+    copyInt_(eg_A,1);
+    copyInt_(eg_B,0);
+    copyInt_(eg_C,0);
+    copyInt_(eg_D,1);
+    for (;;) {
+      while(!(eg_u[0]&1)) {  //while u is even
+        halve_(eg_u);
+        if (!(eg_A[0]&1) && !(eg_B[0]&1)) { //if A==B==0 mod 2
+          halve_(eg_A);
+          halve_(eg_B);      
+        } else {
+          add_(eg_A,y);  halve_(eg_A);
+          sub_(eg_B,x);  halve_(eg_B);
+        }
+      }
+
+      while (!(v[0]&1)) {  //while v is even
+        halve_(v);
+        if (!(eg_C[0]&1) && !(eg_D[0]&1)) { //if C==D==0 mod 2
+          halve_(eg_C);
+          halve_(eg_D);      
+        } else {
+          add_(eg_C,y);  halve_(eg_C);
+          sub_(eg_D,x);  halve_(eg_D);
+        }
+      }
+
+      if (!greater(v,eg_u)) { //v<=u
+        sub_(eg_u,v);
+        sub_(eg_A,eg_C);
+        sub_(eg_B,eg_D);
+      } else {                //v>u
+        sub_(v,eg_u);
+        sub_(eg_C,eg_A);
+        sub_(eg_D,eg_B);
+      }
+      if (equalsInt(eg_u,0)) {
+        while (negative(eg_C)) {   //make sure a (C) is nonnegative
+          add_(eg_C,y);
+          sub_(eg_D,x);
+        }
+        multInt_(eg_D,-1);  ///make sure b (D) is nonnegative
+        copy_(a,eg_C);
+        copy_(b,eg_D);
+        leftShift_(v,g);
+        return;
+      }
+    }
+  }
+
+
+  //is bigInt x negative?
+  function negative(x) {
+    return ((x[x.length-1]>>(bpe-1))&1);
+  }
+
+
+  //is (x << (shift*bpe)) > y?
+  //x and y are nonnegative bigInts
+  //shift is a nonnegative integer
+  function greaterShift(x,y,shift) {
+    var i, kx=x.length, ky=y.length;
+    var k=((kx+shift)<ky) ? (kx+shift) : ky;
+    for (i=ky-1-shift; i<kx && i>=0; i++) 
+      if (x[i]>0)
+        return 1; //if there are nonzeros in x to the left of the first column of y, then x is bigger
+    for (i=kx-1+shift; i<ky; i++)
+      if (y[i]>0)
+        return 0; //if there are nonzeros in y to the left of the first column of x, then x is not bigger
+    for (i=k-1; i>=shift; i--)
+      if      (x[i-shift]>y[i]) return 1;
+      else if (x[i-shift]<y[i]) return 0;
+    return 0;
+  }
+
+  //is x > y? (x and y both nonnegative)
+  function greater(x,y) {
+    var i;
+    var k=(x.length<y.length) ? x.length : y.length;
+
+    for (i=x.length;i<y.length;i++)
+      if (y[i])
+        return 0;  //y has more digits
+
+    for (i=y.length;i<x.length;i++)
+      if (x[i])
+        return 1;  //x has more digits
+
+    for (i=k-1;i>=0;i--)
+      if (x[i]>y[i])
+        return 1;
+      else if (x[i]<y[i])
+        return 0;
+    return 0;
+  }
+
+  //divide x by y giving quotient q and remainder r.  (q=floor(x/y),  r=x mod y).  All 4 are bigints.
+  //x must have at least one leading zero element.
+  //y must be nonzero.
+  //q and r must be arrays that are exactly the same length as x. (Or q can have more).
+  //Must have x.length >= y.length >= 2.
+  function divide_(x,y,q,r) {
+    var kx, ky;
+    var i,j,y1,y2,c,a,b;
+    copy_(r,x);
+    for (ky=y.length;y[ky-1]==0;ky--); //ky is number of elements in y, not including leading zeros
+
+    //normalize: ensure the most significant element of y has its highest bit set  
+    b=y[ky-1];
+    for (a=0; b; a++)
+      b>>=1;  
+    a=bpe-a;  //a is how many bits to shift so that the high order bit of y is leftmost in its array element
+    leftShift_(y,a);  //multiply both by 1<<a now, then divide both by that at the end
+    leftShift_(r,a);
+
+    //Rob Visser discovered a bug: the following line was originally just before the normalization.
+    for (kx=r.length;r[kx-1]==0 && kx>ky;kx--); //kx is number of elements in normalized x, not including leading zeros
+
+    copyInt_(q,0);                      // q=0
+    while (!greaterShift(y,r,kx-ky)) {  // while (leftShift_(y,kx-ky) <= r) {
+      subShift_(r,y,kx-ky);             //   r=r-leftShift_(y,kx-ky)
+      q[kx-ky]++;                       //   q[kx-ky]++;
+    }                                   // }
+
+    for (i=kx-1; i>=ky; i--) {
+      if (r[i]==y[ky-1])
+        q[i-ky]=mask;
+      else
+        q[i-ky]=Math.floor((r[i]*radix+r[i-1])/y[ky-1]);
+
+      //The following for(;;) loop is equivalent to the commented while loop, 
+      //except that the uncommented version avoids overflow.
+      //The commented loop comes from HAC, which assumes r[-1]==y[-1]==0
+      //  while (q[i-ky]*(y[ky-1]*radix+y[ky-2]) > r[i]*radix*radix+r[i-1]*radix+r[i-2])
+      //    q[i-ky]--;    
+      for (;;) {
+        y2=(ky>1 ? y[ky-2] : 0)*q[i-ky];
+        c=y2;
+        y2=y2 & mask;
+        c = (c - y2) / radix;
+        y1=c+q[i-ky]*y[ky-1];
+        c=y1;
+        y1=y1 & mask;
+        c = (c - y1) / radix;
+
+        if (c==r[i] ? y1==r[i-1] ? y2>(i>1 ? r[i-2] : 0) : y1>r[i-1] : c>r[i]) 
+          q[i-ky]--;
+        else
+          break;
+      }
+
+      linCombShift_(r,y,-q[i-ky],i-ky);    //r=r-q[i-ky]*leftShift_(y,i-ky)
+      if (negative(r)) {
+        addShift_(r,y,i-ky);         //r=r+leftShift_(y,i-ky)
+        q[i-ky]--;
+      }
+    }
+
+    rightShift_(y,a);  //undo the normalization step
+    rightShift_(r,a);  //undo the normalization step
+  }
+
+  //do carries and borrows so each element of the bigInt x fits in bpe bits.
+  function carry_(x) {
+    var i,k,c,b;
+    k=x.length;
+    c=0;
+    for (i=0;i<k;i++) {
+      c+=x[i];
+      b=0;
+      if (c<0) {
+        b = c & mask;
+        b = -((c - b) / radix);
+        c+=b*radix;
+      }
+      x[i]=c & mask;
+      c = ((c - x[i]) / radix) - b;
+    }
+  }
+
+  //return x mod n for bigInt x and integer n.
+  function modInt(x,n) {
+    var i,c=0;
+    for (i=x.length-1; i>=0; i--)
+      c=(c*radix+x[i])%n;
+    return c;
+  }
+
+  //convert the integer t into a bigInt with at least the given number of bits.
+  //the returned array stores the bigInt in bpe-bit chunks, little endian (buff[0] is least significant word)
+  //Pad the array with leading zeros so that it has at least minSize elements.
+  //There will always be at least one leading 0 element.
+  function int2bigInt(t,bits,minSize) {   
+    var i,k, buff;
+    k=Math.ceil(bits/bpe)+1;
+    k=minSize>k ? minSize : k;
+    buff=new Array(k);
+    copyInt_(buff,t);
+    return buff;
+  }
+
+  //return the bigInt given a string representation in a given base.  
+  //Pad the array with leading zeros so that it has at least minSize elements.
+  //If base=-1, then it reads in a space-separated list of array elements in decimal.
+  //The array will always have at least one leading zero, unless base=-1.
+  function str2bigInt(s,base,minSize) {
+    var d, i, j, x, y, kk;
+    var k=s.length;
+    if (base==-1) { //comma-separated list of array elements in decimal
+      x=new Array(0);
+      for (;;) {
+        y=new Array(x.length+1);
+        for (i=0;i<x.length;i++)
+          y[i+1]=x[i];
+        y[0]=parseInt(s,10);
+        x=y;
+        d=s.indexOf(',',0);
+        if (d<1) 
+          break;
+        s=s.substring(d+1);
+        if (s.length==0)
+          break;
+      }
+      if (x.length<minSize) {
+        y=new Array(minSize);
+        copy_(y,x);
+        return y;
+      }
+      return x;
+    }
+
+    // log2(base)*k
+    var bb = base, p = 0;
+    var b = base == 1 ? k : 0;
+    while (bb > 1) {
+      if (bb & 1) p = 1;
+      b += k;
+      bb >>= 1;
+    }
+    b += p*k;
+
+    x=int2bigInt(0,b,0);
+    for (i=0;i<k;i++) {
+      d=digitsStr.indexOf(s.substring(i,i+1),0);
+      if (base<=36 && d>=36)  //convert lowercase to uppercase if base<=36
+        d-=26;
+      if (d>=base || d<0) {   //stop at first illegal character
+        break;
+      }
+      multInt_(x,base);
+      addInt_(x,d);
+    }
+
+    for (k=x.length;k>0 && !x[k-1];k--); //strip off leading zeros
+    k=minSize>k+1 ? minSize : k+1;
+    y=new Array(k);
+    kk=k<x.length ? k : x.length;
+    for (i=0;i<kk;i++)
+      y[i]=x[i];
+    for (;i<k;i++)
+      y[i]=0;
+    return y;
+  }
+
+  //is bigint x equal to integer y?
+  //y must have less than bpe bits
+  function equalsInt(x,y) {
+    var i;
+    if (x[0]!=y)
+      return 0;
+    for (i=1;i<x.length;i++)
+      if (x[i])
+        return 0;
+    return 1;
+  }
+
+  //are bigints x and y equal?
+  //this works even if x and y are different lengths and have arbitrarily many leading zeros
+  function equals(x,y) {
+    var i;
+    var k=x.length<y.length ? x.length : y.length;
+    for (i=0;i<k;i++)
+      if (x[i]!=y[i])
+        return 0;
+    if (x.length>y.length) {
+      for (;i<x.length;i++)
+        if (x[i])
+          return 0;
+    } else {
+      for (;i<y.length;i++)
+        if (y[i])
+          return 0;
+    }
+    return 1;
+  }
+
+  //is the bigInt x equal to zero?
+  function isZero(x) {
+    var i;
+    for (i=0;i<x.length;i++)
+      if (x[i])
+        return 0;
+    return 1;
+  }
+
+  //convert a bigInt into a string in a given base, from base 2 up to base 95.
+  //Base -1 prints the contents of the array representing the number.
+  function bigInt2str(x,base) {
+    var i,t,s="";
+
+    if (s6.length!=x.length) 
+      s6=dup(x);
+    else
+      copy_(s6,x);
+
+    if (base==-1) { //return the list of array contents
+      for (i=x.length-1;i>0;i--)
+        s+=x[i]+',';
+      s+=x[0];
+    }
+    else { //return it in the given base
+      while (!isZero(s6)) {
+        t=divInt_(s6,base);  //t=s6 % base; s6=floor(s6/base);
+        s=digitsStr.substring(t,t+1)+s;
+      }
+    }
+    if (s.length==0)
+      s="0";
+    return s;
+  }
+
+  //returns a duplicate of bigInt x
+  function dup(x) {
+    var i, buff;
+    buff=new Array(x.length);
+    copy_(buff,x);
+    return buff;
+  }
+
+  //do x=y on bigInts x and y.  x must be an array at least as big as y (not counting the leading zeros in y).
+  function copy_(x,y) {
+    var i;
+    var k=x.length<y.length ? x.length : y.length;
+    for (i=0;i<k;i++)
+      x[i]=y[i];
+    for (i=k;i<x.length;i++)
+      x[i]=0;
+  }
+
+  //do x=y on bigInt x and integer y.  
+  function copyInt_(x,n) {
+    var i,c;
+    for (c=n,i=0;i<x.length;i++) {
+      x[i]=c & mask;
+      c>>=bpe;
+    }
+  }
+
+  //do x=x+n where x is a bigInt and n is an integer.
+  //x must be large enough to hold the result.
+  function addInt_(x,n) {
+    var i,k,c,b;
+    x[0]+=n;
+    k=x.length;
+    c=0;
+    for (i=0;i<k;i++) {
+      c+=x[i];
+      b=0;
+      if (c<0) {
+        b = c & mask;
+        b = -((c - b) / radix);
+        c+=b*radix;
+      }
+      x[i]=c & mask;
+      c = ((c - x[i]) / radix) - b;
+      if (!c) return; //stop carrying as soon as the carry is zero
+    }
+  }
+
+  //right shift bigInt x by n bits.
+  function rightShift_(x,n) {
+    var i;
+    var k=Math.floor(n/bpe);
+    if (k) {
+      for (i=0;i<x.length-k;i++) //right shift x by k elements
+        x[i]=x[i+k];
+      for (;i<x.length;i++)
+        x[i]=0;
+      n%=bpe;
+    }
+    for (i=0;i<x.length-1;i++) {
+      x[i]=mask & ((x[i+1]<<(bpe-n)) | (x[i]>>n));
+    }
+    x[i]>>=n;
+  }
+
+  //do x=floor(|x|/2)*sgn(x) for bigInt x in 2's complement
+  function halve_(x) {
+    var i;
+    for (i=0;i<x.length-1;i++) {
+      x[i]=mask & ((x[i+1]<<(bpe-1)) | (x[i]>>1));
+    }
+    x[i]=(x[i]>>1) | (x[i] & (radix>>1));  //most significant bit stays the same
+  }
+
+  //left shift bigInt x by n bits.
+  function leftShift_(x,n) {
+    var i;
+    var k=Math.floor(n/bpe);
+    if (k) {
+      for (i=x.length; i>=k; i--) //left shift x by k elements
+        x[i]=x[i-k];
+      for (;i>=0;i--)
+        x[i]=0;  
+      n%=bpe;
+    }
+    if (!n)
+      return;
+    for (i=x.length-1;i>0;i--) {
+      x[i]=mask & ((x[i]<<n) | (x[i-1]>>(bpe-n)));
+    }
+    x[i]=mask & (x[i]<<n);
+  }
+
+  //do x=x*n where x is a bigInt and n is an integer.
+  //x must be large enough to hold the result.
+  function multInt_(x,n) {
+    var i,k,c,b;
+    if (!n)
+      return;
+    k=x.length;
+    c=0;
+    for (i=0;i<k;i++) {
+      c+=x[i]*n;
+      b=0;
+      if (c<0) {
+        b = c & mask;
+        b = -((c - b) / radix);
+        c+=b*radix;
+      }
+      x[i]=c & mask;
+      c = ((c - x[i]) / radix) - b;
+    }
+  }
+
+  //do x=floor(x/n) for bigInt x and integer n, and return the remainder
+  function divInt_(x,n) {
+    var i,r=0,s;
+    for (i=x.length-1;i>=0;i--) {
+      s=r*radix+x[i];
+      x[i]=Math.floor(s/n);
+      r=s%n;
+    }
+    return r;
+  }
+
+  //do the linear combination x=a*x+b*y for bigInts x and y, and integers a and b.
+  //x must be large enough to hold the answer.
+  function linComb_(x,y,a,b) {
+    var i,c,k,kk;
+    k=x.length<y.length ? x.length : y.length;
+    kk=x.length;
+    for (c=0,i=0;i<k;i++) {
+      c+=a*x[i]+b*y[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+    for (i=k;i<kk;i++) {
+      c+=a*x[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+  }
+
+  //do the linear combination x=a*x+b*(y<<(ys*bpe)) for bigInts x and y, and integers a, b and ys.
+  //x must be large enough to hold the answer.
+  function linCombShift_(x,y,b,ys) {
+    var i,c,k,kk;
+    k=x.length<ys+y.length ? x.length : ys+y.length;
+    kk=x.length;
+    for (c=0,i=ys;i<k;i++) {
+      c+=x[i]+b*y[i-ys];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+    for (i=k;c && i<kk;i++) {
+      c+=x[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+  }
+
+  //do x=x+(y<<(ys*bpe)) for bigInts x and y, and integers a,b and ys.
+  //x must be large enough to hold the answer.
+  function addShift_(x,y,ys) {
+    var i,c,k,kk;
+    k=x.length<ys+y.length ? x.length : ys+y.length;
+    kk=x.length;
+    for (c=0,i=ys;i<k;i++) {
+      c+=x[i]+y[i-ys];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+    for (i=k;c && i<kk;i++) {
+      c+=x[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+  }
+
+  //do x=x-(y<<(ys*bpe)) for bigInts x and y, and integers a,b and ys.
+  //x must be large enough to hold the answer.
+  function subShift_(x,y,ys) {
+    var i,c,k,kk;
+    k=x.length<ys+y.length ? x.length : ys+y.length;
+    kk=x.length;
+    for (c=0,i=ys;i<k;i++) {
+      c+=x[i]-y[i-ys];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+    for (i=k;c && i<kk;i++) {
+      c+=x[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+  }
+
+  //do x=x-y for bigInts x and y.
+  //x must be large enough to hold the answer.
+  //negative answers will be 2s complement
+  function sub_(x,y) {
+    var i,c,k,kk;
+    k=x.length<y.length ? x.length : y.length;
+    for (c=0,i=0;i<k;i++) {
+      c+=x[i]-y[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+    for (i=k;c && i<x.length;i++) {
+      c+=x[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+  }
+
+  //do x=x+y for bigInts x and y.
+  //x must be large enough to hold the answer.
+  function add_(x,y) {
+    var i,c,k,kk;
+    k=x.length<y.length ? x.length : y.length;
+    for (c=0,i=0;i<k;i++) {
+      c+=x[i]+y[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+    for (i=k;c && i<x.length;i++) {
+      c+=x[i];
+      x[i]=c & mask;
+      c = (c - x[i]) / radix;
+    }
+  }
+
+  //do x=x*y for bigInts x and y.  This is faster when y<x.
+  function mult_(x,y) {
+    var i;
+    if (ss.length!=2*x.length)
+      ss=new Array(2*x.length);
+    copyInt_(ss,0);
+    for (i=0;i<y.length;i++)
+      if (y[i])
+        linCombShift_(ss,x,y[i],i);   //ss=1*ss+y[i]*(x<<(i*bpe))
+    copy_(x,ss);
+  }
+
+  //do x=x mod n for bigInts x and n.
+  function mod_(x,n) {
+    if (s4.length!=x.length)
+      s4=dup(x);
+    else
+      copy_(s4,x);
+    if (s5.length!=x.length)
+      s5=dup(x);  
+    divide_(s4,n,s5,x);  //x = remainder of s4 / n
+  }
+
+  //do x=x*y mod n for bigInts x,y,n.
+  //for greater speed, let y<x.
+  function multMod_(x,y,n) {
+    var i;
+    if (s0.length!=2*x.length)
+      s0=new Array(2*x.length);
+    copyInt_(s0,0);
+    for (i=0;i<y.length;i++)
+      if (y[i])
+        linCombShift_(s0,x,y[i],i);   //s0=1*s0+y[i]*(x<<(i*bpe))
+    mod_(s0,n);
+    copy_(x,s0);
+  }
+
+  //do x=x*x mod n for bigInts x,n.
+  function squareMod_(x,n) {
+    var i,j,d,c,kx,kn,k;
+    for (kx=x.length; kx>0 && !x[kx-1]; kx--);  //ignore leading zeros in x
+    k=kx>n.length ? 2*kx : 2*n.length; //k=# elements in the product, which is twice the elements in the larger of x and n
+    if (s0.length!=k) 
+      s0=new Array(k);
+    copyInt_(s0,0);
+    for (i=0;i<kx;i++) {
+      c=s0[2*i]+x[i]*x[i];
+      s0[2*i]=c & mask;
+      c = (c - s0[2*i]) / radix;
+      for (j=i+1;j<kx;j++) {
+        c=s0[i+j]+2*x[i]*x[j]+c;
+        s0[i+j]=(c & mask);
+        c = (c - s0[i+j]) / radix;
+      }
+      s0[i+kx]=c;
+    }
+    mod_(s0,n);
+    copy_(x,s0);
+  }
+
+  //return x with exactly k leading zero elements
+  function trim(x,k) {
+    var i,y;
+    for (i=x.length; i>0 && !x[i-1]; i--);
+    y=new Array(i+k);
+    copy_(y,x);
+    return y;
+  }
+
+  //do x=x**y mod n, where x,y,n are bigInts and ** is exponentiation.  0**0=1.
+  //this is faster when n is odd.  x usually needs to have as many elements as n.
+  function powMod_(x,y,n) {
+    var k1,k2,kn,np;
+    if(s7.length!=n.length)
+      s7=dup(n);
+
+    //for even modulus, use a simple square-and-multiply algorithm,
+    //rather than using the more complex Montgomery algorithm.
+    if ((n[0]&1)==0) {
+      copy_(s7,x);
+      copyInt_(x,1);
+      while(!equalsInt(y,0)) {
+        if (y[0]&1)
+          multMod_(x,s7,n);
+        divInt_(y,2);
+        squareMod_(s7,n); 
+      }
+      return;
+    }
+
+    //calculate np from n for the Montgomery multiplications
+    copyInt_(s7,0);
+    for (kn=n.length;kn>0 && !n[kn-1];kn--);
+    np=radix-inverseModInt(modInt(n,radix),radix);
+    s7[kn]=1;
+    multMod_(x ,s7,n);   // x = x * 2**(kn*bp) mod n
+
+    if (s3.length!=x.length)
+      s3=dup(x);
+    else
+      copy_(s3,x);
+
+    for (k1=y.length-1;k1>0 & !y[k1]; k1--);  //k1=first nonzero element of y
+    if (y[k1]==0) {  //anything to the 0th power is 1
+      copyInt_(x,1);
+      return;
+    }
+    for (k2=1<<(bpe-1);k2 && !(y[k1] & k2); k2>>=1);  //k2=position of first 1 bit in y[k1]
+    for (;;) {
+      if (!(k2>>=1)) {  //look at next bit of y
+        k1--;
+        if (k1<0) {
+          mont_(x,one,n,np);
+          return;
+        }
+        k2=1<<(bpe-1);
+      }    
+      mont_(x,x,n,np);
+
+      if (k2 & y[k1]) //if next bit is a 1
+        mont_(x,s3,n,np);
+    }
+  }
+
+
+  //do x=x*y*Ri mod n for bigInts x,y,n, 
+  //  where Ri = 2**(-kn*bpe) mod n, and kn is the 
+  //  number of elements in the n array, not 
+  //  counting leading zeros.  
+  //x array must have at least as many elemnts as the n array
+  //It's OK if x and y are the same variable.
+  //must have:
+  //  x,y < n
+  //  n is odd
+  //  np = -(n^(-1)) mod radix
+  function mont_(x,y,n,np) {
+    var i,j,c,ui,t,t2,ks;
+    var kn=n.length;
+    var ky=y.length;
+
+    if (sa.length!=kn)
+      sa=new Array(kn);
+      
+    copyInt_(sa,0);
+
+    for (;kn>0 && n[kn-1]==0;kn--); //ignore leading zeros of n
+    for (;ky>0 && y[ky-1]==0;ky--); //ignore leading zeros of y
+    ks=sa.length-1; //sa will never have more than this many nonzero elements.  
+
+    //the following loop consumes 95% of the runtime for randTruePrime_() and powMod_() for large numbers
+    for (i=0; i<kn; i++) {
+      t=sa[0]+x[i]*y[0];
+      ui=((t & mask) * np) & mask;  //the inner "& mask" was needed on Safari (but not MSIE) at one time
+      c=(t+ui*n[0]);
+      c = (c - (c & mask)) / radix;
+      t=x[i];
+      
+      //do sa=(sa+x[i]*y+ui*n)/b   where b=2**bpe.  Loop is unrolled 5-fold for speed
+      j=1;
+      for (;j<ky-4;) {
+        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+      }
+      for (;j<ky;)   {
+        c+=sa[j]+ui*n[j]+t*y[j]; t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+      }
+      for (;j<kn-4;) {
+        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+      }
+      for (;j<kn;)   {
+        c+=sa[j]+ui*n[j];        t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+      }
+      for (;j<ks;)   {
+        c+=sa[j];                t2=sa[j-1]=c & mask; c=(c-t2)/radix; j++;
+      }
+      sa[j-1]=c & mask;
+    }
+
+    if (!greater(n,sa))
+      sub_(sa,n);
+    copy_(x,sa);
+  }
+
+
+  // otr.js additions
+
+
+  // computes num / den mod n
+  function divMod(num, den, n) {
+    return multMod(num, inverseMod(den, n), n)
+  }
+
+  // computes one - two mod n
+  function subMod(one, two, n) {
+    one = mod(one, n)
+    two = mod(two, n)
+    if (greater(two, one)) one = add(one, n)
+    return sub(one, two)
+  }
+
+  // computes 2^m as a bigInt
+  function twoToThe(m) {
+    var b = Math.floor(m / bpe) + 2
+    var t = new Array(b)
+    for (var i = 0; i < b; i++) t[i] = 0
+    t[b - 2] = 1 << (m % bpe)
+    return t
+  }
+
+  // cache these results for faster lookup
+  var _num2bin = (function () {
+    var i = 0, _num2bin= {}
+    for (; i < 0x100; ++i) {
+      _num2bin[i] = String.fromCharCode(i)  // 0 -> "\00"
+    }
+    return _num2bin
+  }())
+
+  // serialize a bigInt to an ascii string
+  // padded up to pad length
+  function bigInt2bits(bi, pad) {
+    pad || (pad = 0)
+    bi = dup(bi)
+    var ba = ''
+    while (!isZero(bi)) {
+      ba = _num2bin[bi[0] & 0xff] + ba
+      rightShift_(bi, 8)
+    }
+    while (ba.length < pad) {
+      ba = '\x00' + ba
+    }
+    return ba
+  }
+
+  // converts a byte array to a bigInt
+  function ba2bigInt(data) {
+    var mpi = str2bigInt('0', 10, data.length)
+    data.forEach(function (d, i) {
+      if (i) leftShift_(mpi, 8)
+      mpi[0] |= d
+    })
+    return mpi
+  }
+
+  // returns a function that returns an array of n bytes
+  var randomBytes = (function () {
+
+    // in node
+    if ( typeof crypto !== 'undefined' &&
+      typeof crypto.randomBytes === 'function' ) {
+      return function (n) {
+        try {
+          var buf = crypto.randomBytes(n)
+        } catch (e) { throw e }
+        return Array.prototype.slice.call(buf, 0)
+      }
+    }
+
+    // in browser
+    else if ( typeof crypto !== 'undefined' &&
+      typeof crypto.getRandomValues === 'function' ) {
+      return function (n) {
+        var buf = new Uint8Array(n)
+        crypto.getRandomValues(buf)
+        return Array.prototype.slice.call(buf, 0)
+      }
+    }
+
+    // err
+    else {
+      throw new Error('Keys should not be generated without CSPRNG.')
+    }
+
+  }())
+
+  // Salsa 20 in webworker needs a 40 byte seed
+  function getSeed() {
+    return randomBytes(40)
+  }
+
+  // returns a single random byte
+  function randomByte() {
+    return randomBytes(1)[0]
+  }
+
+  // returns a k-bit random integer
+  function randomBitInt(k) {
+    if (k > 31) throw new Error("Too many bits.")
+    var i = 0, r = 0
+    var b = Math.floor(k / 8)
+    var mask = (1 << (k % 8)) - 1
+    if (mask) r = randomByte() & mask
+    for (; i < b; i++)
+      r = (256 * r) + randomByte()
+    return r
+  }
+
+  return {
+      str2bigInt    : str2bigInt
+    , bigInt2str    : bigInt2str
+    , int2bigInt    : int2bigInt
+    , multMod       : multMod
+    , powMod        : powMod
+    , inverseMod    : inverseMod
+    , randBigInt    : randBigInt
+    , randBigInt_   : randBigInt_
+    , equals        : equals
+    , equalsInt     : equalsInt
+    , sub           : sub
+    , mod           : mod
+    , modInt        : modInt
+    , mult          : mult
+    , divInt_       : divInt_
+    , rightShift_   : rightShift_
+    , dup           : dup
+    , greater       : greater
+    , add           : add
+    , isZero        : isZero
+    , bitSize       : bitSize
+    , millerRabin   : millerRabin
+    , divide_       : divide_
+    , trim          : trim
+    , primes        : primes
+    , findPrimes    : findPrimes
+    , getSeed       : getSeed
+    , divMod        : divMod
+    , subMod        : subMod
+    , twoToThe      : twoToThe
+    , bigInt2bits   : bigInt2bits
+    , ba2bigInt     : ba2bigInt
+  }
+
+}))

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/minifier/otr/dep/bigint.js_LICENCE	Wed Sep 03 19:38:05 2014 +0200
@@ -0,0 +1,11 @@
+// Big Integer Library v. 5.5
+// Created 2000, last modified 2013
+// Leemon Baird
+// www.leemon.com
+//
+// This file is public domain.   You can use it for any purpose without restriction.
+// I do not guarantee that it is correct, so use it at your own risk.  If you use 
+// it for something interesting, I'd appreciate hearing about it.  If you find 
+// any bugs or make any improvements, I'd appreciate hearing about those too.
+// It would also be nice if my name and URL were left in the comments.  But none 
+// of that is required.
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/minifier/otr/dep/crypto.js	Wed Sep 03 19:38:05 2014 +0200
@@ -0,0 +1,2434 @@
+;(function (root, factory) {
+
+  if (typeof define === "function" && define.amd) {
+    define(factory)
+  } else if (typeof module !== 'undefined' && module.exports) {
+    module.exports = factory()
+  } else {
+    root.CryptoJS = factory()
+  }
+
+}(this, function () {
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+/**
+ * CryptoJS core components.
+ */
+var CryptoJS = CryptoJS || (function (Math, undefined) {
+    /**
+     * CryptoJS namespace.
+     */
+    var C = {};
+
+    /**
+     * Library namespace.
+     */
+    var C_lib = C.lib = {};
+
+    /**
+     * Base object for prototypal inheritance.
+     */
+    var Base = C_lib.Base = (function () {
+        function F() {}
+
+        return {
+            /**
+             * Creates a new object that inherits from this object.
+             *
+             * @param {Object} overrides Properties to copy into the new object.
+             *
+             * @return {Object} The new object.
+             *
+             * @static
+             *
+             * @example
+             *
+             *     var MyType = CryptoJS.lib.Base.extend({
+             *         field: 'value',
+             *
+             *         method: function () {
+             *         }
+             *     });
+             */
+            extend: function (overrides) {
+                // Spawn
+                F.prototype = this;
+                var subtype = new F();
+
+                // Augment
+                if (overrides) {
+                    subtype.mixIn(overrides);
+                }
+
+                // Create default initializer
+                if (!subtype.hasOwnProperty('init')) {
+                    subtype.init = function () {
+                        subtype.$super.init.apply(this, arguments);
+                    };
+                }
+
+                // Initializer's prototype is the subtype object
+                subtype.init.prototype = subtype;
+
+                // Reference supertype
+                subtype.$super = this;
+
+                return subtype;
+            },
+
+            /**
+             * Extends this object and runs the init method.
+             * Arguments to create() will be passed to init().
+             *
+             * @return {Object} The new object.
+             *
+             * @static
+             *
+             * @example
+             *
+             *     var instance = MyType.create();
+             */
+            create: function () {
+                var instance = this.extend();
+                instance.init.apply(instance, arguments);
+
+                return instance;
+            },
+
+            /**
+             * Initializes a newly created object.
+             * Override this method to add some logic when your objects are created.
+             *
+             * @example
+             *
+             *     var MyType = CryptoJS.lib.Base.extend({
+             *         init: function () {
+             *             // ...
+             *         }
+             *     });
+             */
+            init: function () {
+            },
+
+            /**
+             * Copies properties into this object.
+             *
+             * @param {Object} properties The properties to mix in.
+             *
+             * @example
+             *
+             *     MyType.mixIn({
+             *         field: 'value'
+             *     });
+             */
+            mixIn: function (properties) {
+                for (var propertyName in properties) {
+                    if (properties.hasOwnProperty(propertyName)) {
+                        this[propertyName] = properties[propertyName];
+                    }
+                }
+
+                // IE won't copy toString using the loop above
+                if (properties.hasOwnProperty('toString')) {
+                    this.toString = properties.toString;
+                }
+            },
+
+            /**
+             * Creates a copy of this object.
+             *
+             * @return {Object} The clone.
+             *
+             * @example
+             *
+             *     var clone = instance.clone();
+             */
+            clone: function () {
+                return this.init.prototype.extend(this);
+            }
+        };
+    }());
+
+    /**
+     * An array of 32-bit words.
+     *
+     * @property {Array} words The array of 32-bit words.
+     * @property {number} sigBytes The number of significant bytes in this word array.
+     */
+    var WordArray = C_lib.WordArray = Base.extend({
+        /**
+         * Initializes a newly created word array.
+         *
+         * @param {Array} words (Optional) An array of 32-bit words.
+         * @param {number} sigBytes (Optional) The number of significant bytes in the words.
+         *
+         * @example
+         *
+         *     var wordArray = CryptoJS.lib.WordArray.create();
+         *     var wordArray = CryptoJS.lib.WordArray.create([0x00010203, 0x04050607]);
+         *     var wordArray = CryptoJS.lib.WordArray.create([0x00010203, 0x04050607], 6);
+         */
+        init: function (words, sigBytes) {
+            words = this.words = words || [];
+
+            if (sigBytes != undefined) {
+                this.sigBytes = sigBytes;
+            } else {
+                this.sigBytes = words.length * 4;
+            }
+        },
+
+        /**
+         * Converts this word array to a string.
+         *
+         * @param {Encoder} encoder (Optional) The encoding strategy to use. Default: CryptoJS.enc.Hex
+         *
+         * @return {string} The stringified word array.
+         *
+         * @example
+         *
+         *     var string = wordArray + '';
+         *     var string = wordArray.toString();
+         *     var string = wordArray.toString(CryptoJS.enc.Utf8);
+         */
+        toString: function (encoder) {
+            return (encoder || Hex).stringify(this);
+        },
+
+        /**
+         * Concatenates a word array to this word array.
+         *
+         * @param {WordArray} wordArray The word array to append.
+         *
+         * @return {WordArray} This word array.
+         *
+         * @example
+         *
+         *     wordArray1.concat(wordArray2);
+         */
+        concat: function (wordArray) {
+            // Shortcuts
+            var thisWords = this.words;
+            var thatWords = wordArray.words;
+            var thisSigBytes = this.sigBytes;
+            var thatSigBytes = wordArray.sigBytes;
+
+            // Clamp excess bits
+            this.clamp();
+
+            // Concat
+            if (thisSigBytes % 4) {
+                // Copy one byte at a time
+                for (var i = 0; i < thatSigBytes; i++) {
+                    var thatByte = (thatWords[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
+                    thisWords[(thisSigBytes + i) >>> 2] |= thatByte << (24 - ((thisSigBytes + i) % 4) * 8);
+                }
+            } else if (thatWords.length > 0xffff) {
+                // Copy one word at a time
+                for (var i = 0; i < thatSigBytes; i += 4) {
+                    thisWords[(thisSigBytes + i) >>> 2] = thatWords[i >>> 2];
+                }
+            } else {
+                // Copy all words at once
+                thisWords.push.apply(thisWords, thatWords);
+            }
+            this.sigBytes += thatSigBytes;
+
+            // Chainable
+            return this;
+        },
+
+        /**
+         * Removes insignificant bits.
+         *
+         * @example
+         *
+         *     wordArray.clamp();
+         */
+        clamp: function () {
+            // Shortcuts
+            var words = this.words;
+            var sigBytes = this.sigBytes;
+
+            // Clamp
+            words[sigBytes >>> 2] &= 0xffffffff << (32 - (sigBytes % 4) * 8);
+            words.length = Math.ceil(sigBytes / 4);
+        },
+
+        /**
+         * Creates a copy of this word array.
+         *
+         * @return {WordArray} The clone.
+         *
+         * @example
+         *
+         *     var clone = wordArray.clone();
+         */
+        clone: function () {
+            var clone = Base.clone.call(this);
+            clone.words = this.words.slice(0);
+
+            return clone;
+        },
+
+        /**
+         * Creates a word array filled with random bytes.
+         *
+         * @param {number} nBytes The number of random bytes to generate.
+         *
+         * @return {WordArray} The random word array.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var wordArray = CryptoJS.lib.WordArray.random(16);
+         */
+        random: function (nBytes) {
+            var words = [];
+            for (var i = 0; i < nBytes; i += 4) {
+                words.push((Math.random() * 0x100000000) | 0);
+            }
+
+            return new WordArray.init(words, nBytes);
+        }
+    });
+
+    /**
+     * Encoder namespace.
+     */
+    var C_enc = C.enc = {};
+
+    /**
+     * Hex encoding strategy.
+     */
+    var Hex = C_enc.Hex = {
+        /**
+         * Converts a word array to a hex string.
+         *
+         * @param {WordArray} wordArray The word array.
+         *
+         * @return {string} The hex string.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var hexString = CryptoJS.enc.Hex.stringify(wordArray);
+         */
+        stringify: function (wordArray) {
+            // Shortcuts
+            var words = wordArray.words;
+            var sigBytes = wordArray.sigBytes;
+
+            // Convert
+            var hexChars = [];
+            for (var i = 0; i < sigBytes; i++) {
+                var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
+                hexChars.push((bite >>> 4).toString(16));
+                hexChars.push((bite & 0x0f).toString(16));
+            }
+
+            return hexChars.join('');
+        },
+
+        /**
+         * Converts a hex string to a word array.
+         *
+         * @param {string} hexStr The hex string.
+         *
+         * @return {WordArray} The word array.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var wordArray = CryptoJS.enc.Hex.parse(hexString);
+         */
+        parse: function (hexStr) {
+            // Shortcut
+            var hexStrLength = hexStr.length;
+
+            // Convert
+            var words = [];
+            for (var i = 0; i < hexStrLength; i += 2) {
+                words[i >>> 3] |= parseInt(hexStr.substr(i, 2), 16) << (24 - (i % 8) * 4);
+            }
+
+            return new WordArray.init(words, hexStrLength / 2);
+        }
+    };
+
+    /**
+     * Latin1 encoding strategy.
+     */
+    var Latin1 = C_enc.Latin1 = {
+        /**
+         * Converts a word array to a Latin1 string.
+         *
+         * @param {WordArray} wordArray The word array.
+         *
+         * @return {string} The Latin1 string.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var latin1String = CryptoJS.enc.Latin1.stringify(wordArray);
+         */
+        stringify: function (wordArray) {
+            // Shortcuts
+            var words = wordArray.words;
+            var sigBytes = wordArray.sigBytes;
+
+            // Convert
+            var latin1Chars = [];
+            for (var i = 0; i < sigBytes; i++) {
+                var bite = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
+                latin1Chars.push(String.fromCharCode(bite));
+            }
+
+            return latin1Chars.join('');
+        },
+
+        /**
+         * Converts a Latin1 string to a word array.
+         *
+         * @param {string} latin1Str The Latin1 string.
+         *
+         * @return {WordArray} The word array.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var wordArray = CryptoJS.enc.Latin1.parse(latin1String);
+         */
+        parse: function (latin1Str) {
+            // Shortcut
+            var latin1StrLength = latin1Str.length;
+
+            // Convert
+            var words = [];
+            for (var i = 0; i < latin1StrLength; i++) {
+                words[i >>> 2] |= (latin1Str.charCodeAt(i) & 0xff) << (24 - (i % 4) * 8);
+            }
+
+            return new WordArray.init(words, latin1StrLength);
+        }
+    };
+
+    /**
+     * UTF-8 encoding strategy.
+     */
+    var Utf8 = C_enc.Utf8 = {
+        /**
+         * Converts a word array to a UTF-8 string.
+         *
+         * @param {WordArray} wordArray The word array.
+         *
+         * @return {string} The UTF-8 string.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var utf8String = CryptoJS.enc.Utf8.stringify(wordArray);
+         */
+        stringify: function (wordArray) {
+            try {
+                return decodeURIComponent(escape(Latin1.stringify(wordArray)));
+            } catch (e) {
+                throw new Error('Malformed UTF-8 data');
+            }
+        },
+
+        /**
+         * Converts a UTF-8 string to a word array.
+         *
+         * @param {string} utf8Str The UTF-8 string.
+         *
+         * @return {WordArray} The word array.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var wordArray = CryptoJS.enc.Utf8.parse(utf8String);
+         */
+        parse: function (utf8Str) {
+            return Latin1.parse(unescape(encodeURIComponent(utf8Str)));
+        }
+    };
+
+    /**
+     * Abstract buffered block algorithm template.
+     *
+     * The property blockSize must be implemented in a concrete subtype.
+     *
+     * @property {number} _minBufferSize The number of blocks that should be kept unprocessed in the buffer. Default: 0
+     */
+    var BufferedBlockAlgorithm = C_lib.BufferedBlockAlgorithm = Base.extend({
+        /**
+         * Resets this block algorithm's data buffer to its initial state.
+         *
+         * @example
+         *
+         *     bufferedBlockAlgorithm.reset();
+         */
+        reset: function () {
+            // Initial values
+            this._data = new WordArray.init();
+            this._nDataBytes = 0;
+        },
+
+        /**
+         * Adds new data to this block algorithm's buffer.
+         *
+         * @param {WordArray|string} data The data to append. Strings are converted to a WordArray using UTF-8.
+         *
+         * @example
+         *
+         *     bufferedBlockAlgorithm._append('data');
+         *     bufferedBlockAlgorithm._append(wordArray);
+         */
+        _append: function (data) {
+            // Convert string to WordArray, else assume WordArray already
+            if (typeof data == 'string') {
+                data = Utf8.parse(data);
+            }
+
+            // Append
+            this._data.concat(data);
+            this._nDataBytes += data.sigBytes;
+        },
+
+        /**
+         * Processes available data blocks.
+         *
+         * This method invokes _doProcessBlock(offset), which must be implemented by a concrete subtype.
+         *
+         * @param {boolean} doFlush Whether all blocks and partial blocks should be processed.
+         *
+         * @return {WordArray} The processed data.
+         *
+         * @example
+         *
+         *     var processedData = bufferedBlockAlgorithm._process();
+         *     var processedData = bufferedBlockAlgorithm._process(!!'flush');
+         */
+        _process: function (doFlush) {
+            // Shortcuts
+            var data = this._data;
+            var dataWords = data.words;
+            var dataSigBytes = data.sigBytes;
+            var blockSize = this.blockSize;
+            var blockSizeBytes = blockSize * 4;
+
+            // Count blocks ready
+            var nBlocksReady = dataSigBytes / blockSizeBytes;
+            if (doFlush) {
+                // Round up to include partial blocks
+                nBlocksReady = Math.ceil(nBlocksReady);
+            } else {
+                // Round down to include only full blocks,
+                // less the number of blocks that must remain in the buffer
+                nBlocksReady = Math.max((nBlocksReady | 0) - this._minBufferSize, 0);
+            }
+
+            // Count words ready
+            var nWordsReady = nBlocksReady * blockSize;
+
+            // Count bytes ready
+            var nBytesReady = Math.min(nWordsReady * 4, dataSigBytes);
+
+            // Process blocks
+            if (nWordsReady) {
+                for (var offset = 0; offset < nWordsReady; offset += blockSize) {
+                    // Perform concrete-algorithm logic
+                    this._doProcessBlock(dataWords, offset);
+                }
+
+                // Remove processed words
+                var processedWords = dataWords.splice(0, nWordsReady);
+                data.sigBytes -= nBytesReady;
+            }
+
+            // Return processed words
+            return new WordArray.init(processedWords, nBytesReady);
+        },
+
+        /**
+         * Creates a copy of this object.
+         *
+         * @return {Object} The clone.
+         *
+         * @example
+         *
+         *     var clone = bufferedBlockAlgorithm.clone();
+         */
+        clone: function () {
+            var clone = Base.clone.call(this);
+            clone._data = this._data.clone();
+
+            return clone;
+        },
+
+        _minBufferSize: 0
+    });
+
+    /**
+     * Abstract hasher template.
+     *
+     * @property {number} blockSize The number of 32-bit words this hasher operates on. Default: 16 (512 bits)
+     */
+    var Hasher = C_lib.Hasher = BufferedBlockAlgorithm.extend({
+        /**
+         * Configuration options.
+         */
+        cfg: Base.extend(),
+
+        /**
+         * Initializes a newly created hasher.
+         *
+         * @param {Object} cfg (Optional) The configuration options to use for this hash computation.
+         *
+         * @example
+         *
+         *     var hasher = CryptoJS.algo.SHA256.create();
+         */
+        init: function (cfg) {
+            // Apply config defaults
+            this.cfg = this.cfg.extend(cfg);
+
+            // Set initial values
+            this.reset();
+        },
+
+        /**
+         * Resets this hasher to its initial state.
+         *
+         * @example
+         *
+         *     hasher.reset();
+         */
+        reset: function () {
+            // Reset data buffer
+            BufferedBlockAlgorithm.reset.call(this);
+
+            // Perform concrete-hasher logic
+            this._doReset();
+        },
+
+        /**
+         * Updates this hasher with a message.
+         *
+         * @param {WordArray|string} messageUpdate The message to append.
+         *
+         * @return {Hasher} This hasher.
+         *
+         * @example
+         *
+         *     hasher.update('message');
+         *     hasher.update(wordArray);
+         */
+        update: function (messageUpdate) {
+            // Append
+            this._append(messageUpdate);
+
+            // Update the hash
+            this._process();
+
+            // Chainable
+            return this;
+        },
+
+        /**
+         * Finalizes the hash computation.
+         * Note that the finalize operation is effectively a destructive, read-once operation.
+         *
+         * @param {WordArray|string} messageUpdate (Optional) A final message update.
+         *
+         * @return {WordArray} The hash.
+         *
+         * @example
+         *
+         *     var hash = hasher.finalize();
+         *     var hash = hasher.finalize('message');
+         *     var hash = hasher.finalize(wordArray);
+         */
+        finalize: function (messageUpdate) {
+            // Final message update
+            if (messageUpdate) {
+                this._append(messageUpdate);
+            }
+
+            // Perform concrete-hasher logic
+            var hash = this._doFinalize();
+
+            return hash;
+        },
+
+        blockSize: 512/32,
+
+        /**
+         * Creates a shortcut function to a hasher's object interface.
+         *
+         * @param {Hasher} hasher The hasher to create a helper for.
+         *
+         * @return {Function} The shortcut function.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var SHA256 = CryptoJS.lib.Hasher._createHelper(CryptoJS.algo.SHA256);
+         */
+        _createHelper: function (hasher) {
+            return function (message, cfg) {
+                return new hasher.init(cfg).finalize(message);
+            };
+        },
+
+        /**
+         * Creates a shortcut function to the HMAC's object interface.
+         *
+         * @param {Hasher} hasher The hasher to use in this HMAC helper.
+         *
+         * @return {Function} The shortcut function.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var HmacSHA256 = CryptoJS.lib.Hasher._createHmacHelper(CryptoJS.algo.SHA256);
+         */
+        _createHmacHelper: function (hasher) {
+            return function (message, key) {
+                return new C_algo.HMAC.init(hasher, key).finalize(message);
+            };
+        }
+    });
+
+    /**
+     * Algorithm namespace.
+     */
+    var C_algo = C.algo = {};
+
+    return C;
+}(Math));
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+(function () {
+    // Shortcuts
+    var C = CryptoJS;
+    var C_lib = C.lib;
+    var WordArray = C_lib.WordArray;
+    var C_enc = C.enc;
+
+    /**
+     * Base64 encoding strategy.
+     */
+    var Base64 = C_enc.Base64 = {
+        /**
+         * Converts a word array to a Base64 string.
+         *
+         * @param {WordArray} wordArray The word array.
+         *
+         * @return {string} The Base64 string.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var base64String = CryptoJS.enc.Base64.stringify(wordArray);
+         */
+        stringify: function (wordArray) {
+            // Shortcuts
+            var words = wordArray.words;
+            var sigBytes = wordArray.sigBytes;
+            var map = this._map;
+
+            // Clamp excess bits
+            wordArray.clamp();
+
+            // Convert
+            var base64Chars = [];
+            for (var i = 0; i < sigBytes; i += 3) {
+                var byte1 = (words[i >>> 2]       >>> (24 - (i % 4) * 8))       & 0xff;
+                var byte2 = (words[(i + 1) >>> 2] >>> (24 - ((i + 1) % 4) * 8)) & 0xff;
+                var byte3 = (words[(i + 2) >>> 2] >>> (24 - ((i + 2) % 4) * 8)) & 0xff;
+
+                var triplet = (byte1 << 16) | (byte2 << 8) | byte3;
+
+                for (var j = 0; (j < 4) && (i + j * 0.75 < sigBytes); j++) {
+                    base64Chars.push(map.charAt((triplet >>> (6 * (3 - j))) & 0x3f));
+                }
+            }
+
+            // Add padding
+            var paddingChar = map.charAt(64);
+            if (paddingChar) {
+                while (base64Chars.length % 4) {
+                    base64Chars.push(paddingChar);
+                }
+            }
+
+            return base64Chars.join('');
+        },
+
+        /**
+         * Converts a Base64 string to a word array.
+         *
+         * @param {string} base64Str The Base64 string.
+         *
+         * @return {WordArray} The word array.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var wordArray = CryptoJS.enc.Base64.parse(base64String);
+         */
+        parse: function (base64Str) {
+            // Shortcuts
+            var base64StrLength = base64Str.length;
+            var map = this._map;
+
+            // Ignore padding
+            var paddingChar = map.charAt(64);
+            if (paddingChar) {
+                var paddingIndex = base64Str.indexOf(paddingChar);
+                if (paddingIndex != -1) {
+                    base64StrLength = paddingIndex;
+                }
+            }
+
+            // Convert
+            var words = [];
+            var nBytes = 0;
+            for (var i = 0; i < base64StrLength; i++) {
+                if (i % 4) {
+                    var bits1 = map.indexOf(base64Str.charAt(i - 1)) << ((i % 4) * 2);
+                    var bits2 = map.indexOf(base64Str.charAt(i)) >>> (6 - (i % 4) * 2);
+                    words[nBytes >>> 2] |= (bits1 | bits2) << (24 - (nBytes % 4) * 8);
+                    nBytes++;
+                }
+            }
+
+            return WordArray.create(words, nBytes);
+        },
+
+        _map: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='
+    };
+}());
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+/**
+ * Cipher core components.
+ */
+CryptoJS.lib.Cipher || (function (undefined) {
+    // Shortcuts
+    var C = CryptoJS;
+    var C_lib = C.lib;
+    var Base = C_lib.Base;
+    var WordArray = C_lib.WordArray;
+    var BufferedBlockAlgorithm = C_lib.BufferedBlockAlgorithm;
+    var C_enc = C.enc;
+    var Utf8 = C_enc.Utf8;
+    var Base64 = C_enc.Base64;
+    var C_algo = C.algo;
+    var EvpKDF = C_algo.EvpKDF;
+
+    /**
+     * Abstract base cipher template.
+     *
+     * @property {number} keySize This cipher's key size. Default: 4 (128 bits)
+     * @property {number} ivSize This cipher's IV size. Default: 4 (128 bits)
+     * @property {number} _ENC_XFORM_MODE A constant representing encryption mode.
+     * @property {number} _DEC_XFORM_MODE A constant representing decryption mode.
+     */
+    var Cipher = C_lib.Cipher = BufferedBlockAlgorithm.extend({
+        /**
+         * Configuration options.
+         *
+         * @property {WordArray} iv The IV to use for this operation.
+         */
+        cfg: Base.extend(),
+
+        /**
+         * Creates this cipher in encryption mode.
+         *
+         * @param {WordArray} key The key.
+         * @param {Object} cfg (Optional) The configuration options to use for this operation.
+         *
+         * @return {Cipher} A cipher instance.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var cipher = CryptoJS.algo.AES.createEncryptor(keyWordArray, { iv: ivWordArray });
+         */
+        createEncryptor: function (key, cfg) {
+            return this.create(this._ENC_XFORM_MODE, key, cfg);
+        },
+
+        /**
+         * Creates this cipher in decryption mode.
+         *
+         * @param {WordArray} key The key.
+         * @param {Object} cfg (Optional) The configuration options to use for this operation.
+         *
+         * @return {Cipher} A cipher instance.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var cipher = CryptoJS.algo.AES.createDecryptor(keyWordArray, { iv: ivWordArray });
+         */
+        createDecryptor: function (key, cfg) {
+            return this.create(this._DEC_XFORM_MODE, key, cfg);
+        },
+
+        /**
+         * Initializes a newly created cipher.
+         *
+         * @param {number} xformMode Either the encryption or decryption transormation mode constant.
+         * @param {WordArray} key The key.
+         * @param {Object} cfg (Optional) The configuration options to use for this operation.
+         *
+         * @example
+         *
+         *     var cipher = CryptoJS.algo.AES.create(CryptoJS.algo.AES._ENC_XFORM_MODE, keyWordArray, { iv: ivWordArray });
+         */
+        init: function (xformMode, key, cfg) {
+            // Apply config defaults
+            this.cfg = this.cfg.extend(cfg);
+
+            // Store transform mode and key
+            this._xformMode = xformMode;
+            this._key = key;
+
+            // Set initial values
+            this.reset();
+        },
+
+        /**
+         * Resets this cipher to its initial state.
+         *
+         * @example
+         *
+         *     cipher.reset();
+         */
+        reset: function () {
+            // Reset data buffer
+            BufferedBlockAlgorithm.reset.call(this);
+
+            // Perform concrete-cipher logic
+            this._doReset();
+        },
+
+        /**
+         * Adds data to be encrypted or decrypted.
+         *
+         * @param {WordArray|string} dataUpdate The data to encrypt or decrypt.
+         *
+         * @return {WordArray} The data after processing.
+         *
+         * @example
+         *
+         *     var encrypted = cipher.process('data');
+         *     var encrypted = cipher.process(wordArray);
+         */
+        process: function (dataUpdate) {
+            // Append
+            this._append(dataUpdate);
+
+            // Process available blocks
+            return this._process();
+        },
+
+        /**
+         * Finalizes the encryption or decryption process.
+         * Note that the finalize operation is effectively a destructive, read-once operation.
+         *
+         * @param {WordArray|string} dataUpdate The final data to encrypt or decrypt.
+         *
+         * @return {WordArray} The data after final processing.
+         *
+         * @example
+         *
+         *     var encrypted = cipher.finalize();
+         *     var encrypted = cipher.finalize('data');
+         *     var encrypted = cipher.finalize(wordArray);
+         */
+        finalize: function (dataUpdate) {
+            // Final data update
+            if (dataUpdate) {
+                this._append(dataUpdate);
+            }
+
+            // Perform concrete-cipher logic
+            var finalProcessedData = this._doFinalize();
+
+            return finalProcessedData;
+        },
+
+        keySize: 128/32,
+
+        ivSize: 128/32,
+
+        _ENC_XFORM_MODE: 1,
+
+        _DEC_XFORM_MODE: 2,
+
+        /**
+         * Creates shortcut functions to a cipher's object interface.
+         *
+         * @param {Cipher} cipher The cipher to create a helper for.
+         *
+         * @return {Object} An object with encrypt and decrypt shortcut functions.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var AES = CryptoJS.lib.Cipher._createHelper(CryptoJS.algo.AES);
+         */
+        _createHelper: (function () {
+            function selectCipherStrategy(key) {
+                if (typeof key == 'string') {
+                    return PasswordBasedCipher;
+                } else {
+                    return SerializableCipher;
+                }
+            }
+
+            return function (cipher) {
+                return {
+                    encrypt: function (message, key, cfg) {
+                        return selectCipherStrategy(key).encrypt(cipher, message, key, cfg);
+                    },
+
+                    decrypt: function (ciphertext, key, cfg) {
+                        return selectCipherStrategy(key).decrypt(cipher, ciphertext, key, cfg);
+                    }
+                };
+            };
+        }())
+    });
+
+    /**
+     * Abstract base stream cipher template.
+     *
+     * @property {number} blockSize The number of 32-bit words this cipher operates on. Default: 1 (32 bits)
+     */
+    var StreamCipher = C_lib.StreamCipher = Cipher.extend({
+        _doFinalize: function () {
+            // Process partial blocks
+            var finalProcessedBlocks = this._process(!!'flush');
+
+            return finalProcessedBlocks;
+        },
+
+        blockSize: 1
+    });
+
+    /**
+     * Mode namespace.
+     */
+    var C_mode = C.mode = {};
+
+    /**
+     * Abstract base block cipher mode template.
+     */
+    var BlockCipherMode = C_lib.BlockCipherMode = Base.extend({
+        /**
+         * Creates this mode for encryption.
+         *
+         * @param {Cipher} cipher A block cipher instance.
+         * @param {Array} iv The IV words.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var mode = CryptoJS.mode.CBC.createEncryptor(cipher, iv.words);
+         */
+        createEncryptor: function (cipher, iv) {
+            return this.Encryptor.create(cipher, iv);
+        },
+
+        /**
+         * Creates this mode for decryption.
+         *
+         * @param {Cipher} cipher A block cipher instance.
+         * @param {Array} iv The IV words.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var mode = CryptoJS.mode.CBC.createDecryptor(cipher, iv.words);
+         */
+        createDecryptor: function (cipher, iv) {
+            return this.Decryptor.create(cipher, iv);
+        },
+
+        /**
+         * Initializes a newly created mode.
+         *
+         * @param {Cipher} cipher A block cipher instance.
+         * @param {Array} iv The IV words.
+         *
+         * @example
+         *
+         *     var mode = CryptoJS.mode.CBC.Encryptor.create(cipher, iv.words);
+         */
+        init: function (cipher, iv) {
+            this._cipher = cipher;
+            this._iv = iv;
+        }
+    });
+
+    /**
+     * Cipher Block Chaining mode.
+     */
+    var CBC = C_mode.CBC = (function () {
+        /**
+         * Abstract base CBC mode.
+         */
+        var CBC = BlockCipherMode.extend();
+
+        /**
+         * CBC encryptor.
+         */
+        CBC.Encryptor = CBC.extend({
+            /**
+             * Processes the data block at offset.
+             *
+             * @param {Array} words The data words to operate on.
+             * @param {number} offset The offset where the block starts.
+             *
+             * @example
+             *
+             *     mode.processBlock(data.words, offset);
+             */
+            processBlock: function (words, offset) {
+                // Shortcuts
+                var cipher = this._cipher;
+                var blockSize = cipher.blockSize;
+
+                // XOR and encrypt
+                xorBlock.call(this, words, offset, blockSize);
+                cipher.encryptBlock(words, offset);
+
+                // Remember this block to use with next block
+                this._prevBlock = words.slice(offset, offset + blockSize);
+            }
+        });
+
+        /**
+         * CBC decryptor.
+         */
+        CBC.Decryptor = CBC.extend({
+            /**
+             * Processes the data block at offset.
+             *
+             * @param {Array} words The data words to operate on.
+             * @param {number} offset The offset where the block starts.
+             *
+             * @example
+             *
+             *     mode.processBlock(data.words, offset);
+             */
+            processBlock: function (words, offset) {
+                // Shortcuts
+                var cipher = this._cipher;
+                var blockSize = cipher.blockSize;
+
+                // Remember this block to use with next block
+                var thisBlock = words.slice(offset, offset + blockSize);
+
+                // Decrypt and XOR
+                cipher.decryptBlock(words, offset);
+                xorBlock.call(this, words, offset, blockSize);
+
+                // This block becomes the previous block
+                this._prevBlock = thisBlock;
+            }
+        });
+
+        function xorBlock(words, offset, blockSize) {
+            // Shortcut
+            var iv = this._iv;
+
+            // Choose mixing block
+            if (iv) {
+                var block = iv;
+
+                // Remove IV for subsequent blocks
+                this._iv = undefined;
+            } else {
+                var block = this._prevBlock;
+            }
+
+            // XOR blocks
+            for (var i = 0; i < blockSize; i++) {
+                words[offset + i] ^= block[i];
+            }
+        }
+
+        return CBC;
+    }());
+
+    /**
+     * Padding namespace.
+     */
+    var C_pad = C.pad = {};
+
+    /**
+     * PKCS #5/7 padding strategy.
+     */
+    var Pkcs7 = C_pad.Pkcs7 = {
+        /**
+         * Pads data using the algorithm defined in PKCS #5/7.
+         *
+         * @param {WordArray} data The data to pad.
+         * @param {number} blockSize The multiple that the data should be padded to.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     CryptoJS.pad.Pkcs7.pad(wordArray, 4);
+         */
+        pad: function (data, blockSize) {
+            // Shortcut
+            var blockSizeBytes = blockSize * 4;
+
+            // Count padding bytes
+            var nPaddingBytes = blockSizeBytes - data.sigBytes % blockSizeBytes;
+
+            // Create padding word
+            var paddingWord = (nPaddingBytes << 24) | (nPaddingBytes << 16) | (nPaddingBytes << 8) | nPaddingBytes;
+
+            // Create padding
+            var paddingWords = [];
+            for (var i = 0; i < nPaddingBytes; i += 4) {
+                paddingWords.push(paddingWord);
+            }
+            var padding = WordArray.create(paddingWords, nPaddingBytes);
+
+            // Add padding
+            data.concat(padding);
+        },
+
+        /**
+         * Unpads data that had been padded using the algorithm defined in PKCS #5/7.
+         *
+         * @param {WordArray} data The data to unpad.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     CryptoJS.pad.Pkcs7.unpad(wordArray);
+         */
+        unpad: function (data) {
+            // Get number of padding bytes from last byte
+            var nPaddingBytes = data.words[(data.sigBytes - 1) >>> 2] & 0xff;
+
+            // Remove padding
+            data.sigBytes -= nPaddingBytes;
+        }
+    };
+
+    /**
+     * Abstract base block cipher template.
+     *
+     * @property {number} blockSize The number of 32-bit words this cipher operates on. Default: 4 (128 bits)
+     */
+    var BlockCipher = C_lib.BlockCipher = Cipher.extend({
+        /**
+         * Configuration options.
+         *
+         * @property {Mode} mode The block mode to use. Default: CBC
+         * @property {Padding} padding The padding strategy to use. Default: Pkcs7
+         */
+        cfg: Cipher.cfg.extend({
+            mode: CBC,
+            padding: Pkcs7
+        }),
+
+        reset: function () {
+            // Reset cipher
+            Cipher.reset.call(this);
+
+            // Shortcuts
+            var cfg = this.cfg;
+            var iv = cfg.iv;
+            var mode = cfg.mode;
+
+            // Reset block mode
+            if (this._xformMode == this._ENC_XFORM_MODE) {
+                var modeCreator = mode.createEncryptor;
+            } else /* if (this._xformMode == this._DEC_XFORM_MODE) */ {
+                var modeCreator = mode.createDecryptor;
+
+                // Keep at least one block in the buffer for unpadding
+                this._minBufferSize = 1;
+            }
+            this._mode = modeCreator.call(mode, this, iv && iv.words);
+        },
+
+        _doProcessBlock: function (words, offset) {
+            this._mode.processBlock(words, offset);
+        },
+
+        _doFinalize: function () {
+            // Shortcut
+            var padding = this.cfg.padding;
+
+            // Finalize
+            if (this._xformMode == this._ENC_XFORM_MODE) {
+                // Pad data
+                padding.pad(this._data, this.blockSize);
+
+                // Process final blocks
+                var finalProcessedBlocks = this._process(!!'flush');
+            } else /* if (this._xformMode == this._DEC_XFORM_MODE) */ {
+                // Process final blocks
+                var finalProcessedBlocks = this._process(!!'flush');
+
+                // Unpad data
+                padding.unpad(finalProcessedBlocks);
+            }
+
+            return finalProcessedBlocks;
+        },
+
+        blockSize: 128/32
+    });
+
+    /**
+     * A collection of cipher parameters.
+     *
+     * @property {WordArray} ciphertext The raw ciphertext.
+     * @property {WordArray} key The key to this ciphertext.
+     * @property {WordArray} iv The IV used in the ciphering operation.
+     * @property {WordArray} salt The salt used with a key derivation function.
+     * @property {Cipher} algorithm The cipher algorithm.
+     * @property {Mode} mode The block mode used in the ciphering operation.
+     * @property {Padding} padding The padding scheme used in the ciphering operation.
+     * @property {number} blockSize The block size of the cipher.
+     * @property {Format} formatter The default formatting strategy to convert this cipher params object to a string.
+     */
+    var CipherParams = C_lib.CipherParams = Base.extend({
+        /**
+         * Initializes a newly created cipher params object.
+         *
+         * @param {Object} cipherParams An object with any of the possible cipher parameters.
+         *
+         * @example
+         *
+         *     var cipherParams = CryptoJS.lib.CipherParams.create({
+         *         ciphertext: ciphertextWordArray,
+         *         key: keyWordArray,
+         *         iv: ivWordArray,
+         *         salt: saltWordArray,
+         *         algorithm: CryptoJS.algo.AES,
+         *         mode: CryptoJS.mode.CBC,
+         *         padding: CryptoJS.pad.PKCS7,
+         *         blockSize: 4,
+         *         formatter: CryptoJS.format.OpenSSL
+         *     });
+         */
+        init: function (cipherParams) {
+            this.mixIn(cipherParams);
+        },
+
+        /**
+         * Converts this cipher params object to a string.
+         *
+         * @param {Format} formatter (Optional) The formatting strategy to use.
+         *
+         * @return {string} The stringified cipher params.
+         *
+         * @throws Error If neither the formatter nor the default formatter is set.
+         *
+         * @example
+         *
+         *     var string = cipherParams + '';
+         *     var string = cipherParams.toString();
+         *     var string = cipherParams.toString(CryptoJS.format.OpenSSL);
+         */
+        toString: function (formatter) {
+            return (formatter || this.formatter).stringify(this);
+        }
+    });
+
+    /**
+     * Format namespace.
+     */
+    var C_format = C.format = {};
+
+    /**
+     * OpenSSL formatting strategy.
+     */
+    var OpenSSLFormatter = C_format.OpenSSL = {
+        /**
+         * Converts a cipher params object to an OpenSSL-compatible string.
+         *
+         * @param {CipherParams} cipherParams The cipher params object.
+         *
+         * @return {string} The OpenSSL-compatible string.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var openSSLString = CryptoJS.format.OpenSSL.stringify(cipherParams);
+         */
+        stringify: function (cipherParams) {
+            // Shortcuts
+            var ciphertext = cipherParams.ciphertext;
+            var salt = cipherParams.salt;
+
+            // Format
+            if (salt) {
+                var wordArray = WordArray.create([0x53616c74, 0x65645f5f]).concat(salt).concat(ciphertext);
+            } else {
+                var wordArray = ciphertext;
+            }
+
+            return wordArray.toString(Base64);
+        },
+
+        /**
+         * Converts an OpenSSL-compatible string to a cipher params object.
+         *
+         * @param {string} openSSLStr The OpenSSL-compatible string.
+         *
+         * @return {CipherParams} The cipher params object.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var cipherParams = CryptoJS.format.OpenSSL.parse(openSSLString);
+         */
+        parse: function (openSSLStr) {
+            // Parse base64
+            var ciphertext = Base64.parse(openSSLStr);
+
+            // Shortcut
+            var ciphertextWords = ciphertext.words;
+
+            // Test for salt
+            if (ciphertextWords[0] == 0x53616c74 && ciphertextWords[1] == 0x65645f5f) {
+                // Extract salt
+                var salt = WordArray.create(ciphertextWords.slice(2, 4));
+
+                // Remove salt from ciphertext
+                ciphertextWords.splice(0, 4);
+                ciphertext.sigBytes -= 16;
+            }
+
+            return CipherParams.create({ ciphertext: ciphertext, salt: salt });
+        }
+    };
+
+    /**
+     * A cipher wrapper that returns ciphertext as a serializable cipher params object.
+     */
+    var SerializableCipher = C_lib.SerializableCipher = Base.extend({
+        /**
+         * Configuration options.
+         *
+         * @property {Formatter} format The formatting strategy to convert cipher param objects to and from a string. Default: OpenSSL
+         */
+        cfg: Base.extend({
+            format: OpenSSLFormatter
+        }),
+
+        /**
+         * Encrypts a message.
+         *
+         * @param {Cipher} cipher The cipher algorithm to use.
+         * @param {WordArray|string} message The message to encrypt.
+         * @param {WordArray} key The key.
+         * @param {Object} cfg (Optional) The configuration options to use for this operation.
+         *
+         * @return {CipherParams} A cipher params object.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key);
+         *     var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key, { iv: iv });
+         *     var ciphertextParams = CryptoJS.lib.SerializableCipher.encrypt(CryptoJS.algo.AES, message, key, { iv: iv, format: CryptoJS.format.OpenSSL });
+         */
+        encrypt: function (cipher, message, key, cfg) {
+            // Apply config defaults
+            cfg = this.cfg.extend(cfg);
+
+            // Encrypt
+            var encryptor = cipher.createEncryptor(key, cfg);
+            var ciphertext = encryptor.finalize(message);
+
+            // Shortcut
+            var cipherCfg = encryptor.cfg;
+
+            // Create and return serializable cipher params
+            return CipherParams.create({
+                ciphertext: ciphertext,
+                key: key,
+                iv: cipherCfg.iv,
+                algorithm: cipher,
+                mode: cipherCfg.mode,
+                padding: cipherCfg.padding,
+                blockSize: cipher.blockSize,
+                formatter: cfg.format
+            });
+        },
+
+        /**
+         * Decrypts serialized ciphertext.
+         *
+         * @param {Cipher} cipher The cipher algorithm to use.
+         * @param {CipherParams|string} ciphertext The ciphertext to decrypt.
+         * @param {WordArray} key The key.
+         * @param {Object} cfg (Optional) The configuration options to use for this operation.
+         *
+         * @return {WordArray} The plaintext.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var plaintext = CryptoJS.lib.SerializableCipher.decrypt(CryptoJS.algo.AES, formattedCiphertext, key, { iv: iv, format: CryptoJS.format.OpenSSL });
+         *     var plaintext = CryptoJS.lib.SerializableCipher.decrypt(CryptoJS.algo.AES, ciphertextParams, key, { iv: iv, format: CryptoJS.format.OpenSSL });
+         */
+        decrypt: function (cipher, ciphertext, key, cfg) {
+            // Apply config defaults
+            cfg = this.cfg.extend(cfg);
+
+            // Convert string to CipherParams
+            ciphertext = this._parse(ciphertext, cfg.format);
+
+            // Decrypt
+            var plaintext = cipher.createDecryptor(key, cfg).finalize(ciphertext.ciphertext);
+
+            return plaintext;
+        },
+
+        /**
+         * Converts serialized ciphertext to CipherParams,
+         * else assumed CipherParams already and returns ciphertext unchanged.
+         *
+         * @param {CipherParams|string} ciphertext The ciphertext.
+         * @param {Formatter} format The formatting strategy to use to parse serialized ciphertext.
+         *
+         * @return {CipherParams} The unserialized ciphertext.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var ciphertextParams = CryptoJS.lib.SerializableCipher._parse(ciphertextStringOrParams, format);
+         */
+        _parse: function (ciphertext, format) {
+            if (typeof ciphertext == 'string') {
+                return format.parse(ciphertext, this);
+            } else {
+                return ciphertext;
+            }
+        }
+    });
+
+    /**
+     * Key derivation function namespace.
+     */
+    var C_kdf = C.kdf = {};
+
+    /**
+     * OpenSSL key derivation function.
+     */
+    var OpenSSLKdf = C_kdf.OpenSSL = {
+        /**
+         * Derives a key and IV from a password.
+         *
+         * @param {string} password The password to derive from.
+         * @param {number} keySize The size in words of the key to generate.
+         * @param {number} ivSize The size in words of the IV to generate.
+         * @param {WordArray|string} salt (Optional) A 64-bit salt to use. If omitted, a salt will be generated randomly.
+         *
+         * @return {CipherParams} A cipher params object with the key, IV, and salt.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var derivedParams = CryptoJS.kdf.OpenSSL.execute('Password', 256/32, 128/32);
+         *     var derivedParams = CryptoJS.kdf.OpenSSL.execute('Password', 256/32, 128/32, 'saltsalt');
+         */
+        execute: function (password, keySize, ivSize, salt) {
+            // Generate random salt
+            if (!salt) {
+                salt = WordArray.random(64/8);
+            }
+
+            // Derive key and IV
+            var key = EvpKDF.create({ keySize: keySize + ivSize }).compute(password, salt);
+
+            // Separate key and IV
+            var iv = WordArray.create(key.words.slice(keySize), ivSize * 4);
+            key.sigBytes = keySize * 4;
+
+            // Return params
+            return CipherParams.create({ key: key, iv: iv, salt: salt });
+        }
+    };
+
+    /**
+     * A serializable cipher wrapper that derives the key from a password,
+     * and returns ciphertext as a serializable cipher params object.
+     */
+    var PasswordBasedCipher = C_lib.PasswordBasedCipher = SerializableCipher.extend({
+        /**
+         * Configuration options.
+         *
+         * @property {KDF} kdf The key derivation function to use to generate a key and IV from a password. Default: OpenSSL
+         */
+        cfg: SerializableCipher.cfg.extend({
+            kdf: OpenSSLKdf
+        }),
+
+        /**
+         * Encrypts a message using a password.
+         *
+         * @param {Cipher} cipher The cipher algorithm to use.
+         * @param {WordArray|string} message The message to encrypt.
+         * @param {string} password The password.
+         * @param {Object} cfg (Optional) The configuration options to use for this operation.
+         *
+         * @return {CipherParams} A cipher params object.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var ciphertextParams = CryptoJS.lib.PasswordBasedCipher.encrypt(CryptoJS.algo.AES, message, 'password');
+         *     var ciphertextParams = CryptoJS.lib.PasswordBasedCipher.encrypt(CryptoJS.algo.AES, message, 'password', { format: CryptoJS.format.OpenSSL });
+         */
+        encrypt: function (cipher, message, password, cfg) {
+            // Apply config defaults
+            cfg = this.cfg.extend(cfg);
+
+            // Derive key and other params
+            var derivedParams = cfg.kdf.execute(password, cipher.keySize, cipher.ivSize);
+
+            // Add IV to config
+            cfg.iv = derivedParams.iv;
+
+            // Encrypt
+            var ciphertext = SerializableCipher.encrypt.call(this, cipher, message, derivedParams.key, cfg);
+
+            // Mix in derived params
+            ciphertext.mixIn(derivedParams);
+
+            return ciphertext;
+        },
+
+        /**
+         * Decrypts serialized ciphertext using a password.
+         *
+         * @param {Cipher} cipher The cipher algorithm to use.
+         * @param {CipherParams|string} ciphertext The ciphertext to decrypt.
+         * @param {string} password The password.
+         * @param {Object} cfg (Optional) The configuration options to use for this operation.
+         *
+         * @return {WordArray} The plaintext.
+         *
+         * @static
+         *
+         * @example
+         *
+         *     var plaintext = CryptoJS.lib.PasswordBasedCipher.decrypt(CryptoJS.algo.AES, formattedCiphertext, 'password', { format: CryptoJS.format.OpenSSL });
+         *     var plaintext = CryptoJS.lib.PasswordBasedCipher.decrypt(CryptoJS.algo.AES, ciphertextParams, 'password', { format: CryptoJS.format.OpenSSL });
+         */
+        decrypt: function (cipher, ciphertext, password, cfg) {
+            // Apply config defaults
+            cfg = this.cfg.extend(cfg);
+
+            // Convert string to CipherParams
+            ciphertext = this._parse(ciphertext, cfg.format);
+
+            // Derive key and other params
+            var derivedParams = cfg.kdf.execute(password, cipher.keySize, cipher.ivSize, ciphertext.salt);
+
+            // Add IV to config
+            cfg.iv = derivedParams.iv;
+
+            // Decrypt
+            var plaintext = SerializableCipher.decrypt.call(this, cipher, ciphertext, derivedParams.key, cfg);
+
+            return plaintext;
+        }
+    });
+}());
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+(function () {
+    // Shortcuts
+    var C = CryptoJS;
+    var C_lib = C.lib;
+    var BlockCipher = C_lib.BlockCipher;
+    var C_algo = C.algo;
+
+    // Lookup tables
+    var SBOX = [];
+    var INV_SBOX = [];
+    var SUB_MIX_0 = [];
+    var SUB_MIX_1 = [];
+    var SUB_MIX_2 = [];
+    var SUB_MIX_3 = [];
+    var INV_SUB_MIX_0 = [];
+    var INV_SUB_MIX_1 = [];
+    var INV_SUB_MIX_2 = [];
+    var INV_SUB_MIX_3 = [];
+
+    // Compute lookup tables
+    (function () {
+        // Compute double table
+        var d = [];
+        for (var i = 0; i < 256; i++) {
+            if (i < 128) {
+                d[i] = i << 1;
+            } else {
+                d[i] = (i << 1) ^ 0x11b;
+            }
+        }
+
+        // Walk GF(2^8)
+        var x = 0;
+        var xi = 0;
+        for (var i = 0; i < 256; i++) {
+            // Compute sbox
+            var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4);
+            sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63;
+            SBOX[x] = sx;
+            INV_SBOX[sx] = x;
+
+            // Compute multiplication
+            var x2 = d[x];
+            var x4 = d[x2];
+            var x8 = d[x4];
+
+            // Compute sub bytes, mix columns tables
+            var t = (d[sx] * 0x101) ^ (sx * 0x1010100);
+            SUB_MIX_0[x] = (t << 24) | (t >>> 8);
+            SUB_MIX_1[x] = (t << 16) | (t >>> 16);
+            SUB_MIX_2[x] = (t << 8)  | (t >>> 24);
+            SUB_MIX_3[x] = t;
+
+            // Compute inv sub bytes, inv mix columns tables
+            var t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100);
+            INV_SUB_MIX_0[sx] = (t << 24) | (t >>> 8);
+            INV_SUB_MIX_1[sx] = (t << 16) | (t >>> 16);
+            INV_SUB_MIX_2[sx] = (t << 8)  | (t >>> 24);
+            INV_SUB_MIX_3[sx] = t;
+
+            // Compute next counter
+            if (!x) {
+                x = xi = 1;
+            } else {
+                x = x2 ^ d[d[d[x8 ^ x2]]];
+                xi ^= d[d[xi]];
+            }
+        }
+    }());
+
+    // Precomputed Rcon lookup
+    var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36];
+
+    /**
+     * AES block cipher algorithm.
+     */
+    var AES = C_algo.AES = BlockCipher.extend({
+        _doReset: function () {
+            // Shortcuts
+            var key = this._key;
+            var keyWords = key.words;
+            var keySize = key.sigBytes / 4;
+
+            // Compute number of rounds
+            var nRounds = this._nRounds = keySize + 6
+
+            // Compute number of key schedule rows
+            var ksRows = (nRounds + 1) * 4;
+
+            // Compute key schedule
+            var keySchedule = this._keySchedule = [];
+            for (var ksRow = 0; ksRow < ksRows; ksRow++) {
+                if (ksRow < keySize) {
+                    keySchedule[ksRow] = keyWords[ksRow];
+                } else {
+                    var t = keySchedule[ksRow - 1];
+
+                    if (!(ksRow % keySize)) {
+                        // Rot word
+                        t = (t << 8) | (t >>> 24);
+
+                        // Sub word
+                        t = (SBOX[t >>> 24] << 24) | (SBOX[(t >>> 16) & 0xff] << 16) | (SBOX[(t >>> 8) & 0xff] << 8) | SBOX[t & 0xff];
+
+                        // Mix Rcon
+                        t ^= RCON[(ksRow / keySize) | 0] << 24;
+                    } else if (keySize > 6 && ksRow % keySize == 4) {
+                        // Sub word
+                        t = (SBOX[t >>> 24] << 24) | (SBOX[(t >>> 16) & 0xff] << 16) | (SBOX[(t >>> 8) & 0xff] << 8) | SBOX[t & 0xff];
+                    }
+
+                    keySchedule[ksRow] = keySchedule[ksRow - keySize] ^ t;
+                }
+            }
+
+            // Compute inv key schedule
+            var invKeySchedule = this._invKeySchedule = [];
+            for (var invKsRow = 0; invKsRow < ksRows; invKsRow++) {
+                var ksRow = ksRows - invKsRow;
+
+                if (invKsRow % 4) {
+                    var t = keySchedule[ksRow];
+                } else {
+                    var t = keySchedule[ksRow - 4];
+                }
+
+                if (invKsRow < 4 || ksRow <= 4) {
+                    invKeySchedule[invKsRow] = t;
+                } else {
+                    invKeySchedule[invKsRow] = INV_SUB_MIX_0[SBOX[t >>> 24]] ^ INV_SUB_MIX_1[SBOX[(t >>> 16) & 0xff]] ^
+                                               INV_SUB_MIX_2[SBOX[(t >>> 8) & 0xff]] ^ INV_SUB_MIX_3[SBOX[t & 0xff]];
+                }
+            }
+        },
+
+        encryptBlock: function (M, offset) {
+            this._doCryptBlock(M, offset, this._keySchedule, SUB_MIX_0, SUB_MIX_1, SUB_MIX_2, SUB_MIX_3, SBOX);
+        },
+
+        decryptBlock: function (M, offset) {
+            // Swap 2nd and 4th rows
+            var t = M[offset + 1];
+            M[offset + 1] = M[offset + 3];
+            M[offset + 3] = t;
+
+            this._doCryptBlock(M, offset, this._invKeySchedule, INV_SUB_MIX_0, INV_SUB_MIX_1, INV_SUB_MIX_2, INV_SUB_MIX_3, INV_SBOX);
+
+            // Inv swap 2nd and 4th rows
+            var t = M[offset + 1];
+            M[offset + 1] = M[offset + 3];
+            M[offset + 3] = t;
+        },
+
+        _doCryptBlock: function (M, offset, keySchedule, SUB_MIX_0, SUB_MIX_1, SUB_MIX_2, SUB_MIX_3, SBOX) {
+            // Shortcut
+            var nRounds = this._nRounds;
+
+            // Get input, add round key
+            var s0 = M[offset]     ^ keySchedule[0];
+            var s1 = M[offset + 1] ^ keySchedule[1];
+            var s2 = M[offset + 2] ^ keySchedule[2];
+            var s3 = M[offset + 3] ^ keySchedule[3];
+
+            // Key schedule row counter
+            var ksRow = 4;
+
+            // Rounds
+            for (var round = 1; round < nRounds; round++) {
+                // Shift rows, sub bytes, mix columns, add round key
+                var t0 = SUB_MIX_0[s0 >>> 24] ^ SUB_MIX_1[(s1 >>> 16) & 0xff] ^ SUB_MIX_2[(s2 >>> 8) & 0xff] ^ SUB_MIX_3[s3 & 0xff] ^ keySchedule[ksRow++];
+                var t1 = SUB_MIX_0[s1 >>> 24] ^ SUB_MIX_1[(s2 >>> 16) & 0xff] ^ SUB_MIX_2[(s3 >>> 8) & 0xff] ^ SUB_MIX_3[s0 & 0xff] ^ keySchedule[ksRow++];
+                var t2 = SUB_MIX_0[s2 >>> 24] ^ SUB_MIX_1[(s3 >>> 16) & 0xff] ^ SUB_MIX_2[(s0 >>> 8) & 0xff] ^ SUB_MIX_3[s1 & 0xff] ^ keySchedule[ksRow++];
+                var t3 = SUB_MIX_0[s3 >>> 24] ^ SUB_MIX_1[(s0 >>> 16) & 0xff] ^ SUB_MIX_2[(s1 >>> 8) & 0xff] ^ SUB_MIX_3[s2 & 0xff] ^ keySchedule[ksRow++];
+
+                // Update state
+                s0 = t0;
+                s1 = t1;
+                s2 = t2;
+                s3 = t3;
+            }
+
+            // Shift rows, sub bytes, add round key
+            var t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++];
+            var t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++];
+            var t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++];
+            var t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++];
+
+            // Set output
+            M[offset]     = t0;
+            M[offset + 1] = t1;
+            M[offset + 2] = t2;
+            M[offset + 3] = t3;
+        },
+
+        keySize: 256/32
+    });
+
+    /**
+     * Shortcut functions to the cipher's object interface.
+     *
+     * @example
+     *
+     *     var ciphertext = CryptoJS.AES.encrypt(message, key, cfg);
+     *     var plaintext  = CryptoJS.AES.decrypt(ciphertext, key, cfg);
+     */
+    C.AES = BlockCipher._createHelper(AES);
+}());
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+(function () {
+    // Shortcuts
+    var C = CryptoJS;
+    var C_lib = C.lib;
+    var WordArray = C_lib.WordArray;
+    var Hasher = C_lib.Hasher;
+    var C_algo = C.algo;
+
+    // Reusable object
+    var W = [];
+
+    /**
+     * SHA-1 hash algorithm.
+     */
+    var SHA1 = C_algo.SHA1 = Hasher.extend({
+        _doReset: function () {
+            this._hash = new WordArray.init([
+                0x67452301, 0xefcdab89,
+                0x98badcfe, 0x10325476,
+                0xc3d2e1f0
+            ]);
+        },
+
+        _doProcessBlock: function (M, offset) {
+            // Shortcut
+            var H = this._hash.words;
+
+            // Working variables
+            var a = H[0];
+            var b = H[1];
+            var c = H[2];
+            var d = H[3];
+            var e = H[4];
+
+            // Computation
+            for (var i = 0; i < 80; i++) {
+                if (i < 16) {
+                    W[i] = M[offset + i] | 0;
+                } else {
+                    var n = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];
+                    W[i] = (n << 1) | (n >>> 31);
+                }
+
+                var t = ((a << 5) | (a >>> 27)) + e + W[i];
+                if (i < 20) {
+                    t += ((b & c) | (~b & d)) + 0x5a827999;
+                } else if (i < 40) {
+                    t += (b ^ c ^ d) + 0x6ed9eba1;
+                } else if (i < 60) {
+                    t += ((b & c) | (b & d) | (c & d)) - 0x70e44324;
+                } else /* if (i < 80) */ {
+                    t += (b ^ c ^ d) - 0x359d3e2a;
+                }
+
+                e = d;
+                d = c;
+                c = (b << 30) | (b >>> 2);
+                b = a;
+                a = t;
+            }
+
+            // Intermediate hash value
+            H[0] = (H[0] + a) | 0;
+            H[1] = (H[1] + b) | 0;
+            H[2] = (H[2] + c) | 0;
+            H[3] = (H[3] + d) | 0;
+            H[4] = (H[4] + e) | 0;
+        },
+
+        _doFinalize: function () {
+            // Shortcuts
+            var data = this._data;
+            var dataWords = data.words;
+
+            var nBitsTotal = this._nDataBytes * 8;
+            var nBitsLeft = data.sigBytes * 8;
+
+            // Add padding
+            dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
+            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = Math.floor(nBitsTotal / 0x100000000);
+            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 15] = nBitsTotal;
+            data.sigBytes = dataWords.length * 4;
+
+            // Hash final blocks
+            this._process();
+
+            // Return final computed hash
+            return this._hash;
+        },
+
+        clone: function () {
+            var clone = Hasher.clone.call(this);
+            clone._hash = this._hash.clone();
+
+            return clone;
+        }
+    });
+
+    /**
+     * Shortcut function to the hasher's object interface.
+     *
+     * @param {WordArray|string} message The message to hash.
+     *
+     * @return {WordArray} The hash.
+     *
+     * @static
+     *
+     * @example
+     *
+     *     var hash = CryptoJS.SHA1('message');
+     *     var hash = CryptoJS.SHA1(wordArray);
+     */
+    C.SHA1 = Hasher._createHelper(SHA1);
+
+    /**
+     * Shortcut function to the HMAC's object interface.
+     *
+     * @param {WordArray|string} message The message to hash.
+     * @param {WordArray|string} key The secret key.
+     *
+     * @return {WordArray} The HMAC.
+     *
+     * @static
+     *
+     * @example
+     *
+     *     var hmac = CryptoJS.HmacSHA1(message, key);
+     */
+    C.HmacSHA1 = Hasher._createHmacHelper(SHA1);
+}());
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+(function (Math) {
+    // Shortcuts
+    var C = CryptoJS;
+    var C_lib = C.lib;
+    var WordArray = C_lib.WordArray;
+    var Hasher = C_lib.Hasher;
+    var C_algo = C.algo;
+
+    // Initialization and round constants tables
+    var H = [];
+    var K = [];
+
+    // Compute constants
+    (function () {
+        function isPrime(n) {
+            var sqrtN = Math.sqrt(n);
+            for (var factor = 2; factor <= sqrtN; factor++) {
+                if (!(n % factor)) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        function getFractionalBits(n) {
+            return ((n - (n | 0)) * 0x100000000) | 0;
+        }
+
+        var n = 2;
+        var nPrime = 0;
+        while (nPrime < 64) {
+            if (isPrime(n)) {
+                if (nPrime < 8) {
+                    H[nPrime] = getFractionalBits(Math.pow(n, 1 / 2));
+                }
+                K[nPrime] = getFractionalBits(Math.pow(n, 1 / 3));
+
+                nPrime++;
+            }
+
+            n++;
+        }
+    }());
+
+    // Reusable object
+    var W = [];
+
+    /**
+     * SHA-256 hash algorithm.
+     */
+    var SHA256 = C_algo.SHA256 = Hasher.extend({
+        _doReset: function () {
+            this._hash = new WordArray.init(H.slice(0));
+        },
+
+        _doProcessBlock: function (M, offset) {
+            // Shortcut
+            var H = this._hash.words;
+
+            // Working variables
+            var a = H[0];
+            var b = H[1];
+            var c = H[2];
+            var d = H[3];
+            var e = H[4];
+            var f = H[5];
+            var g = H[6];
+            var h = H[7];
+
+            // Computation
+            for (var i = 0; i < 64; i++) {
+                if (i < 16) {
+                    W[i] = M[offset + i] | 0;
+                } else {
+                    var gamma0x = W[i - 15];
+                    var gamma0  = ((gamma0x << 25) | (gamma0x >>> 7))  ^
+                                  ((gamma0x << 14) | (gamma0x >>> 18)) ^
+                                   (gamma0x >>> 3);
+
+                    var gamma1x = W[i - 2];
+                    var gamma1  = ((gamma1x << 15) | (gamma1x >>> 17)) ^
+                                  ((gamma1x << 13) | (gamma1x >>> 19)) ^
+                                   (gamma1x >>> 10);
+
+                    W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16];
+                }
+
+                var ch  = (e & f) ^ (~e & g);
+                var maj = (a & b) ^ (a & c) ^ (b & c);
+
+                var sigma0 = ((a << 30) | (a >>> 2)) ^ ((a << 19) | (a >>> 13)) ^ ((a << 10) | (a >>> 22));
+                var sigma1 = ((e << 26) | (e >>> 6)) ^ ((e << 21) | (e >>> 11)) ^ ((e << 7)  | (e >>> 25));
+
+                var t1 = h + sigma1 + ch + K[i] + W[i];
+                var t2 = sigma0 + maj;
+
+                h = g;
+                g = f;
+                f = e;
+                e = (d + t1) | 0;
+                d = c;
+                c = b;
+                b = a;
+                a = (t1 + t2) | 0;
+            }
+
+            // Intermediate hash value
+            H[0] = (H[0] + a) | 0;
+            H[1] = (H[1] + b) | 0;
+            H[2] = (H[2] + c) | 0;
+            H[3] = (H[3] + d) | 0;
+            H[4] = (H[4] + e) | 0;
+            H[5] = (H[5] + f) | 0;
+            H[6] = (H[6] + g) | 0;
+            H[7] = (H[7] + h) | 0;
+        },
+
+        _doFinalize: function () {
+            // Shortcuts
+            var data = this._data;
+            var dataWords = data.words;
+
+            var nBitsTotal = this._nDataBytes * 8;
+            var nBitsLeft = data.sigBytes * 8;
+
+            // Add padding
+            dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
+            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = Math.floor(nBitsTotal / 0x100000000);
+            dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 15] = nBitsTotal;
+            data.sigBytes = dataWords.length * 4;
+
+            // Hash final blocks
+            this._process();
+
+            // Return final computed hash
+            return this._hash;
+        },
+
+        clone: function () {
+            var clone = Hasher.clone.call(this);
+            clone._hash = this._hash.clone();
+
+            return clone;
+        }
+    });
+
+    /**
+     * Shortcut function to the hasher's object interface.
+     *
+     * @param {WordArray|string} message The message to hash.
+     *
+     * @return {WordArray} The hash.
+     *
+     * @static
+     *
+     * @example
+     *
+     *     var hash = CryptoJS.SHA256('message');
+     *     var hash = CryptoJS.SHA256(wordArray);
+     */
+    C.SHA256 = Hasher._createHelper(SHA256);
+
+    /**
+     * Shortcut function to the HMAC's object interface.
+     *
+     * @param {WordArray|string} message The message to hash.
+     * @param {WordArray|string} key The secret key.
+     *
+     * @return {WordArray} The HMAC.
+     *
+     * @static
+     *
+     * @example
+     *
+     *     var hmac = CryptoJS.HmacSHA256(message, key);
+     */
+    C.HmacSHA256 = Hasher._createHmacHelper(SHA256);
+}(Math));
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+(function () {
+    // Shortcuts
+    var C = CryptoJS;
+    var C_lib = C.lib;
+    var Base = C_lib.Base;
+    var C_enc = C.enc;
+    var Utf8 = C_enc.Utf8;
+    var C_algo = C.algo;
+
+    /**
+     * HMAC algorithm.
+     */
+    var HMAC = C_algo.HMAC = Base.extend({
+        /**
+         * Initializes a newly created HMAC.
+         *
+         * @param {Hasher} hasher The hash algorithm to use.
+         * @param {WordArray|string} key The secret key.
+         *
+         * @example
+         *
+         *     var hmacHasher = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, key);
+         */
+        init: function (hasher, key) {
+            // Init hasher
+            hasher = this._hasher = new hasher.init();
+
+            // Convert string to WordArray, else assume WordArray already
+            if (typeof key == 'string') {
+                key = Utf8.parse(key);
+            }
+
+            // Shortcuts
+            var hasherBlockSize = hasher.blockSize;
+            var hasherBlockSizeBytes = hasherBlockSize * 4;
+
+            // Allow arbitrary length keys
+            if (key.sigBytes > hasherBlockSizeBytes) {
+                key = hasher.finalize(key);
+            }
+
+            // Clamp excess bits
+            key.clamp();
+
+            // Clone key for inner and outer pads
+            var oKey = this._oKey = key.clone();
+            var iKey = this._iKey = key.clone();
+
+            // Shortcuts
+            var oKeyWords = oKey.words;
+            var iKeyWords = iKey.words;
+
+            // XOR keys with pad constants
+            for (var i = 0; i < hasherBlockSize; i++) {
+                oKeyWords[i] ^= 0x5c5c5c5c;
+                iKeyWords[i] ^= 0x36363636;
+            }
+            oKey.sigBytes = iKey.sigBytes = hasherBlockSizeBytes;
+
+            // Set initial values
+            this.reset();
+        },
+
+        /**
+         * Resets this HMAC to its initial state.
+         *
+         * @example
+         *
+         *     hmacHasher.reset();
+         */
+        reset: function () {
+            // Shortcut
+            var hasher = this._hasher;
+
+            // Reset
+            hasher.reset();
+            hasher.update(this._iKey);
+        },
+
+        /**
+         * Updates this HMAC with a message.
+         *
+         * @param {WordArray|string} messageUpdate The message to append.
+         *
+         * @return {HMAC} This HMAC instance.
+         *
+         * @example
+         *
+         *     hmacHasher.update('message');
+         *     hmacHasher.update(wordArray);
+         */
+        update: function (messageUpdate) {
+            this._hasher.update(messageUpdate);
+
+            // Chainable
+            return this;
+        },
+
+        /**
+         * Finalizes the HMAC computation.
+         * Note that the finalize operation is effectively a destructive, read-once operation.
+         *
+         * @param {WordArray|string} messageUpdate (Optional) A final message update.
+         *
+         * @return {WordArray} The HMAC.
+         *
+         * @example
+         *
+         *     var hmac = hmacHasher.finalize();
+         *     var hmac = hmacHasher.finalize('message');
+         *     var hmac = hmacHasher.finalize(wordArray);
+         */
+        finalize: function (messageUpdate) {
+            // Shortcut
+            var hasher = this._hasher;
+
+            // Compute HMAC
+            var innerHash = hasher.finalize(messageUpdate);
+            hasher.reset();
+            var hmac = hasher.finalize(this._oKey.clone().concat(innerHash));
+
+            return hmac;
+        }
+    });
+}());
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+/**
+ * A noop padding strategy.
+ */
+CryptoJS.pad.NoPadding = {
+    pad: function () {
+    },
+
+    unpad: function () {
+    }
+};
+
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+/**
+ * Counter block mode.
+ */
+CryptoJS.mode.CTR = (function () {
+    var CTR = CryptoJS.lib.BlockCipherMode.extend();
+
+    var Encryptor = CTR.Encryptor = CTR.extend({
+        processBlock: function (words, offset) {
+            // Shortcuts
+            var cipher = this._cipher
+            var blockSize = cipher.blockSize;
+            var iv = this._iv;
+            var counter = this._counter;
+
+            // Generate keystream
+            if (iv) {
+                counter = this._counter = iv.slice(0);
+
+                // Remove IV for subsequent blocks
+                this._iv = undefined;
+            }
+            var keystream = counter.slice(0);
+            cipher.encryptBlock(keystream, 0);
+
+            // Increment counter
+            counter[blockSize - 1] = (counter[blockSize - 1] + 1) | 0
+
+            // Encrypt
+            for (var i = 0; i < blockSize; i++) {
+                words[offset + i] ^= keystream[i];
+            }
+        }
+    });
+
+    CTR.Decryptor = Encryptor;
+
+    return CTR;
+}());
+
+
+  return CryptoJS
+
+}))