diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06215eb..61d28d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,18 @@
+# 0.3b0 (2016-08-25)
+
+* version bump for password-protection feature publication on github
+
+# 0.2b2 (2016-08-25)
+
+* improve length and handling of server-defined PBKDF2 salt
+* fix escaping of password-protected secrets
+* harmonize variable names of encryption and decryption code
+* test implementation of password-protection feature within chroot environment
+
+# 0.2b1 (2016-08-24)
+
+* implemented the password-protection feature
+
 # 0.2b0 (2016-08-22)
 
 * version bump for initial publication on github
diff --git a/README.md b/README.md
index e347f8e..22f15a2 100644
--- a/README.md
+++ b/README.md
@@ -6,15 +6,17 @@ Using the Shared-Secrets service allows you to transfer the actual secret in an
 
 Secrets can only be retrieved once. Further retrievals are rejected by matching the secret against the fingerprints of secrets that have been retrieved before. By disallowing repeating retrievals of a secret, it is at least possible to detect when the confidentiality of a secret has been compromised.
 
+To protect your secret from getting known by the server or an attacker, you can additionally protect the secret with a password before sharing it. The secret will be encrypted and decrypted locally without an interaction with the server. You can provide the chosen password to the recipient through a second communication channel to prevent an attacker that is able to control one communication channel from compromising the confidentiallity of your secret.
+
 ## Usage
 
 ### Share a Secret
 
-Simply enter your secret on the default page of the Shared-Secrets service and press the "Share the Secret!" button. The secret will be GPG-encrypted and converted into a secret sharing link.
+Simply enter your secret on the default page of the Shared-Secrets service. You can decide to password-protect the entered secret before sending it to the server by checking the "Password-protected:" box, entering your password and pressing the "Protect!" button. After that, press the "Share the Secret!" button. The secret will be GPG-encrypted and converted into a secret sharing link.
 
 ### Read a Secret
 
-To retrieve the secret, simply open the secret sharing link and press the "Read the Secret!" button.
+To retrieve the secret, simply open the secret sharing link and press the "Read the Secret!" button. Should your secret be password-protected, check the "Password-protected:" box, enter your password and read your actual secret by pressing the "Unprotect!" button.
 
 ## Installation
 
@@ -68,7 +70,9 @@ It is strongly recommended to use TLS to protect the connection between the serv
 
 ## Attributions
 
+* asmCrypto (https://github.com/vibornoff/asmcrypto.js/): for providing PBKDF2 and AES functions 
 * Bootstrap (https://getbootstrap.com): for providing an easy-to-use framework to build nice-looking applications
+* buffer (https://github.com/feross/buffer): for providing Base64-encoding and array-conversion functions
 * clipboard.js (https://clipboardjs.com): for simplifying the copy-to-clipboard use-case a lot
 * html5shiv (https://github.com/aFarkas/html5shiv): for handling Internet Explorer compatibility stuff
 * jQuery (https://jquery.com): for just existing
@@ -79,6 +83,7 @@ It is strongly recommended to use TLS to protect the connection between the serv
 
 * switch to the GnuPG PECL (https://pecl.php.net/package/gnupg) once the PHP 7 support is stable
 * switch to a more personalized design (current design is taken from https://github.com/twbs/bootstrap/tree/master/docs/examples/starter-template)
+* implement an expiry date functionality
 
 ## License
 
diff --git a/config.php.default b/config.php.default
index 99f22b3..45233cd 100644
--- a/config.php.default
+++ b/config.php.default
@@ -37,6 +37,12 @@
   # this is the URL the imprint link shall forward to
   define("IMPRINT_URL", "https://localhost.local/");
 
+  # this is the configuration to either enable or disable the
+  # password-protection of secrets on top of the server-side
+  # encryption, set this configuration value to true to enable
+  # the optional password-protection
+  define("ENABLE_PASSWORD_PROTECTION", false);
+
   # this is the configuration to either enable or disable the
   # logging of IP addresses for retrieved secrets, set this
   # configuration value to false to disable the logging of
diff --git a/index.php b/index.php
index c29ddf6..5124032 100644
--- a/index.php
+++ b/index.php
@@ -1,6 +1,6 @@
 <?php
 
-  # Shared-Secrets v0.2b0
+  # Shared-Secrets v0.3b0
   #
   # Copyright (c) 2016, SysEleven GmbH
   # All rights reserved.
diff --git a/pages/how/get.php b/pages/how/get.php
index 089b5e8..f7a9773 100644
--- a/pages/how/get.php
+++ b/pages/how/get.php
@@ -63,6 +63,17 @@
 
 <?php
 
+  if (ENABLE_PASSWORD_PROTECTION) {
+
+?>
+
+    <h2>Short description of the password-protection feature.</h2>
+    <p>When using the password-protection feature, the secret is encrypted locally using the AES algorithm in GCM mode. The encryption key is derived from the entered password and a server-provided salt using the PBKDF2 algorithm. The server-provided salt is prepended to the encrypted secret. The password-protection feature is implemented using client-side JavaScript. Please beware that a compromised server may serve you JavaScript code that defeats the purpose of the local encryption. If you do not trust the server that provides the secret sharing service, then encrypt your secret with a locally installed application before sharing it.
+
+<?php
+
+  }
+
   # include header
   require_once(ROOT_DIR."/template/footer.php");
 
diff --git a/pages/read/get.php b/pages/read/get.php
index 749ec39..bdff387 100644
--- a/pages/read/get.php
+++ b/pages/read/get.php
@@ -9,14 +9,27 @@
   # include header
   require_once(ROOT_DIR."/template/header.php");
 
+  if (ENABLE_PASSWORD_PROTECTION) {
+
+?>
+
+    <noscript>
+      <div class="alert alert-warning">
+        <strong>Warning!</strong> You don't have JavaScript enabled. You will not be able to read password-protected secrets.
+      </div>
+    </noscript>
+
+<?php
+
+  }
+
 ?>
 
   <h1>Read a Secret:</h1>
+  <p><pre id="read-secret"><?php print(htmlentities(SECRET_URI)); ?></pre></p>
+
   <form role="form" action="/<?php print(htmlentities(urlencode(SECRET_URI))); ?>" method="post">
-    <div class="form-group">
-      <pre><?php print(htmlentities(SECRET_URI)); ?></pre>
-    </div>
-    <button type="submit" class="btn btn-default pull-right">Read the Secret!</button>
+    <button type="submit" class="btn btn-default pull-right" id="read-secret-btn" name="read-secret-btn">Read the Secret!</button>
   </form>
 
 <?php
diff --git a/pages/read/post.php b/pages/read/post.php
index 3a11303..ae11baa 100644
--- a/pages/read/post.php
+++ b/pages/read/post.php
@@ -9,14 +9,116 @@
   # include header
   require_once(ROOT_DIR."/template/header.php");
 
+  if (ENABLE_PASSWORD_PROTECTION) {
+
+?>
+
+    <noscript>
+      <div class="alert alert-warning">
+        <strong>Warning!</strong> You don't have JavaScript enabled. You will not be able to read password-protected secrets.
+      </div>
+    </noscript>
+    <div class="alert alert-danger" id="decrypt-error" style="display: none;">
+      <strong>Error!</strong> Local decryption failed.
+    </div>
+
+<?php
+
+  }
+
 ?>
 
   <h1>Read a Secret:</h1>
-  <p><pre id="read-secret"><?php print(read_secret(SECRET_URI)); ?></pre>
-     <button type="btn" class="btn btn-default" data-clipboard-target="#read-secret" id="copy-to-clipboard">Copy to Clipboard!</button></p>
+  <p><pre id="secret"><?php print(read_secret(SECRET_URI)); ?></pre>
+     <button type="btn" class="btn btn-default pull-right" data-clipboard-target="#secret" id="copy-to-clipboard">Copy to Clipboard!</button></p>
 
 <?php
 
+  if (ENABLE_PASSWORD_PROTECTION) {
+
+?>
+
+    <label class="checkbox-inline" for="decrypt-locally"><input type="checkbox" autocomplete="off" id="decrypt-locally" value="" onclick="decrypt_locally();" />Password-protected: </label>
+    <input type="password" autocomplete="off" class="form-control" id="password" maxlength="64" size="32" style="display: inline; visibility: hidden; width: 25%;" />
+    <input type="button" class="btn btn-default" id="decrypt" style="visibility: hidden;" value="Unprotect!" onclick="decrypt();" />
+
+    <script src="/vendors/asmcrypto/asmcrypto.js" type="text/javascript"></script>
+    <script src="/vendors/buffer/index.js" type="text/javascript"></script>
+
+    <script type="text/javascript">
+      // action happening on local decryption
+      function decrypt() {
+        var result = decrypt_secret(document.getElementById("secret").innerHTML,
+                                    document.getElementById("password").value);
+
+        if (null != result) {
+          document.getElementById("secret").innerHTML = html_entities(result);
+
+          document.getElementById("decrypt").disabled         = true;
+          document.getElementById("decrypt-locally").disabled = true;
+
+          document.getElementById("password").readOnly = "readonly";
+
+          document.getElementById("decrypt-error").style.display = "none";
+        } else {
+          document.getElementById("decrypt-error").style.display = "block";
+        }
+      }
+
+      // show/hide local decryption
+      function decrypt_locally(checkbox) {
+        if (document.getElementById("decrypt-locally").checked) {
+          document.getElementById("decrypt").style.visibility  = "visible";
+          document.getElementById("password").style.visibility = "visible";
+        } else {
+          document.getElementById("decrypt").style.visibility  = "hidden";
+          document.getElementById("password").style.visibility = "hidden";
+        }
+      }
+
+      // prevent code injection through locally decrypted secret
+      function html_entities(content) {
+        return content.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
+      }
+
+      function decrypt_secret(concatSecret, password) {
+        // these variables configure the PBKDF2 call
+        var outputLength = 32;
+        var workFactor   = 1024;
+
+        // split concatenation of Base64-encoded salt and Base64-encoded encrypted secret
+        var base64Salt   = concatSecret.substring(0, 44);
+        var base64Secret = concatSecret.substring(44);
+
+        // retrieve plain salt from Base64-encoded salt
+        var salt = (new buffer.SlowBuffer(base64Salt, "base64")).toArrayBuffer();
+
+        // retrieve plain secret from Base64-encoded encrypted secret
+        var secret = (new buffer.SlowBuffer(base64Secret, "base64")).toArrayBuffer();
+
+        // derive decryption key
+        var pbkdf2Key = asmCrypto.PBKDF2_HMAC_SHA256.bytes(password, salt, workFactor, outputLength);
+
+        try {
+          // decrypt secret with derived decryption key
+          var aesResult = asmCrypto.AES_GCM.decrypt(secret, pbkdf2Key, new Uint8Array(12));
+        } catch(err) {
+          var aesResult = null;
+        }
+
+        if (null != aesResult) {
+          // return UTF-8-encoded decrypted secret
+          return (new buffer.SlowBuffer(aesResult)).toString("utf-8");
+        } else {
+          return aesResult;
+        }
+      }
+    </script>
+
+<?php
+
+  }
+
   # include footer
   require_once(ROOT_DIR."/template/footer.php");
 
diff --git a/pages/share/get.php b/pages/share/get.php
index 2f58477..0f312f5 100644
--- a/pages/share/get.php
+++ b/pages/share/get.php
@@ -9,18 +9,117 @@
   # include header
   require_once(ROOT_DIR."/template/header.php");
 
+  if (ENABLE_PASSWORD_PROTECTION) {
+
 ?>
 
-  <form role="form" action="/<?php print(htmlentities(urlencode(SECRET_URI))); ?>" method="post">
-    <div class="form-group">
-      <label for="secret"><h1>Share a Secret:</h1></label>
-      <input type="text" autocomplete="off" class="form-control" id="secret" name="secret" maxlength="512" size="512" />
+    <noscript>
+      <div class="alert alert-warning">
+        <strong>Warning!</strong> You don't have JavaScript enabled. You will not be able to share password-protected secrets.
+      </div>
+    </noscript>
+    <div class="alert alert-danger" id="encrypt-error" style="display: none;">
+      <strong>Error!</strong> Local encryption failed.
     </div>
-    <button type="submit" class="btn btn-default pull-right">Share the Secret!</button>
+
+<?php
+
+  }
+
+?>
+
+  <form role="form" action="/<?php print(htmlentities(urlencode(SECRET_URI))); ?>" method="post">
+    <label for="secret"><h1>Share a Secret:</h1></label>
+    <input type="text" autocomplete="off" class="form-control" id="secret" name="secret" maxlength="512" size="512" />
+    <button type="submit" class="btn btn-default pull-right" id="share-secret-btn" name="share-secret-btn" style="margin-top: 0.5em;">Share the Secret!</button>
   </form>
 
 <?php
 
+  if (ENABLE_PASSWORD_PROTECTION) {
+
+?>
+
+    <label class="checkbox-inline" for="encrypt-locally"><input type="checkbox" autocomplete="off" id="encrypt-locally" value="" onclick="encrypt_locally();" />Password-protected: </label>
+    <input type="password" autocomplete="off" class="form-control" id="password" maxlength="64" size="32" style="display: inline; margin-top: 0.5em; visibility: hidden; width: 25%;" />
+    <input type="button" class="btn btn-default" id="encrypt" style="visibility: hidden;" value="Protect!" onclick="encrypt();" />
+
+    <script src="/vendors/asmcrypto/asmcrypto.js" type="text/javascript"></script>
+    <script src="/vendors/buffer/index.js" type="text/javascript"></script>
+
+    <script type="text/javascript">
+      // action happening on local encryption
+      function encrypt() {
+        var result = encrypt_secret(document.getElementById("secret").value,
+                                    document.getElementById("password").value,
+                                    "<?php print(base64_encode(openssl_random_pseudo_bytes(32))); ?>");
+
+        if (null != result) {
+          document.getElementById("secret").value = result;
+
+          document.getElementById("share-secret-btn").disabled = false;
+
+          document.getElementById("encrypt").disabled         = true;
+          document.getElementById("encrypt-locally").disabled = true;
+
+          document.getElementById("password").readOnly = "readonly";
+          document.getElementById("secret").readOnly   = "readonly";
+
+          document.getElementById("encrypt-error").style.display = "none";
+        } else {
+          document.getElementById("encrypt-error").style.display = "block";
+        }
+      }
+
+      // show/hide local encryption
+      function encrypt_locally(checkbox) {
+        if (document.getElementById("encrypt-locally").checked) {
+          document.getElementById("share-secret-btn").disabled = true;
+
+          document.getElementById("encrypt").style.visibility  = "visible";
+          document.getElementById("password").style.visibility = "visible";
+        } else {
+          document.getElementById("share-secret-btn").disabled = false;
+
+          document.getElementById("encrypt").style.visibility  = "hidden";
+          document.getElementById("password").style.visibility = "hidden";
+        }
+      }
+
+      function encrypt_secret(secret, password, base64Salt) {
+        // these variables configure the PBKDF2 call
+        var outputLength = 32;
+        var workFactor   = 1024;
+
+        // retrieve salt from Base64-encoded salt
+        var salt = (new buffer.SlowBuffer(base64Salt, "base64")).toArrayBuffer();
+
+        // derive encryption key
+        var pbkdf2Key = asmCrypto.PBKDF2_HMAC_SHA256.bytes(password, salt, workFactor, outputLength);
+
+        try {
+          // encrypt secret with derived encryption key
+          var aesResult = asmCrypto.AES_GCM.encrypt(secret, pbkdf2Key, new Uint8Array(12));
+        } catch (err) {
+          var aesResult = null;
+        }
+
+        if (null != aesResult) {
+          // create Base64-encoded encrypted secret
+          var base64Secret = (new buffer.SlowBuffer(aesResult)).toString("base64");
+
+          // return concatenation of Base64-encoded salt and Base64-encoded encrypted secret
+          return (base64Salt + base64Secret);
+        } else {
+          return aesResult;
+        }
+      }
+    </script>
+
+<?php
+
+  }
+
   # include footer
   require_once(ROOT_DIR."/template/footer.php");
 
diff --git a/pages/share/post.php b/pages/share/post.php
index f1fdd87..09d881f 100644
--- a/pages/share/post.php
+++ b/pages/share/post.php
@@ -9,11 +9,25 @@
   # include header
   require_once(ROOT_DIR."/template/header.php");
 
+  if (ENABLE_PASSWORD_PROTECTION) {
+
+?>
+
+    <noscript>
+      <div class="alert alert-warning">
+        <strong>Warning!</strong> You don't have JavaScript enabled. You will not be able to share password-protected secrets.
+      </div>
+    </noscript>
+
+<?php
+
+  }
+
 ?>
 
   <h1>Share a Secret:</h1>
   <p><pre id="share-secret"><?php print(share_secret(SECRET_PARAM)); ?></pre>
-     <button type="btn" class="btn btn-default" data-clipboard-target="#share-secret" id="copy-to-clipboard">Copy to Clipboard!</button></p>
+     <button type="btn" class="btn btn-default pull-right" data-clipboard-target="#share-secret" id="copy-to-clipboard">Copy to Clipboard!</button></p>
 
 <?php
 
diff --git a/template/footer.php b/template/footer.php
index 4c0355d..93cd84f 100644
--- a/template/footer.php
+++ b/template/footer.php
@@ -7,11 +7,11 @@
       <!-- footer -->
     </div>
 
-    <script src="/vendors/jquery/jquery.min.js"></script>
-    <script src="/vendors/clipboard/clipboard.min.js"></script>
-    <script src="/vendors/bootstrap/js/bootstrap.min.js"></script>
+    <script src="/vendors/jquery/jquery.min.js" type="text/javascript"></script>
+    <script src="/vendors/clipboard/clipboard.min.js" type="text/javascript"></script>
+    <script src="/vendors/bootstrap/js/bootstrap.min.js" type="text/javascript"></script>
 
-    <script>
+    <script type="text/javascript">
       // find copy-to-clipboard button
       var copy_to_clipboard = document.getElementById("copy-to-clipboard");
 
diff --git a/template/header.php b/template/header.php
index cbab9d6..da0b345 100644
--- a/template/header.php
+++ b/template/header.php
@@ -13,11 +13,11 @@
 
     <title><?php print(htmlentities(SERVICE_TITLE)); ?></title>
 
-    <link href="/vendors/bootstrap/css/bootstrap.min.css" rel="stylesheet" />
+    <link href="/vendors/bootstrap/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
 
     <!--[if lt IE 9]>
-      <script src="/vendors/html5shiv/html5shiv.min.js"></script>
-      <script src="/vendors/respond/respond.min.js"></script>
+      <script src="/vendors/html5shiv/html5shiv.min.js" type="text/javascript"></script>
+      <script src="/vendors/respond/respond.min.js" type="text/javascript"></script>
     <![endif]-->
   </head>
 
diff --git a/vendors/asmcrypto/asmcrypto.js b/vendors/asmcrypto/asmcrypto.js
new file mode 100644
index 0000000..a761775
--- /dev/null
+++ b/vendors/asmcrypto/asmcrypto.js
@@ -0,0 +1,6 @@
+/*! asmCrypto, (c) 2013 Artem S Vybornov, opensource.org/licenses/MIT */
+!function(a,b){function c(){var a=Error.apply(this,arguments);this.message=a.message,this.stack=a.stack}function d(){var a=Error.apply(this,arguments);this.message=a.message,this.stack=a.stack}function e(){var a=Error.apply(this,arguments);this.message=a.message,this.stack=a.stack}function f(a,b){b=!!b;for(var c=a.length,d=new Uint8Array(b?4*c:c),e=0,f=0;c>e;e++){var g=a.charCodeAt(e);if(b&&g>=55296&&56319>=g){if(++e>=c)throw new Error("Malformed string, low surrogate expected at position "+e);g=(55296^g)<<10|65536|56320^a.charCodeAt(e)}else if(!b&&g>>>8)throw new Error("Wide characters are not allowed.");!b||127>=g?d[f++]=g:2047>=g?(d[f++]=192|g>>6,d[f++]=128|63&g):65535>=g?(d[f++]=224|g>>12,d[f++]=128|g>>6&63,d[f++]=128|63&g):(d[f++]=240|g>>18,d[f++]=128|g>>12&63,d[f++]=128|g>>6&63,d[f++]=128|63&g)}return d.subarray(0,f)}function g(a){var b=a.length;1&b&&(a="0"+a,b++);for(var c=new Uint8Array(b>>1),d=0;b>d;d+=2)c[d>>1]=parseInt(a.substr(d,2),16);return c}function h(a){return f(atob(a))}function i(a,b){b=!!b;for(var c=a.length,d=new Array(c),e=0,f=0;c>e;e++){var g=a[e];if(!b||128>g)d[f++]=g;else if(g>=192&&224>g&&c>e+1)d[f++]=(31&g)<<6|63&a[++e];else if(g>=224&&240>g&&c>e+2)d[f++]=(15&g)<<12|(63&a[++e])<<6|63&a[++e];else{if(!(g>=240&&248>g&&c>e+3))throw new Error("Malformed UTF8 character at byte offset "+e);var h=(7&g)<<18|(63&a[++e])<<12|(63&a[++e])<<6|63&a[++e];65535>=h?d[f++]=h:(h^=65536,d[f++]=55296|h>>10,d[f++]=56320|1023&h)}}for(var i="",j=16384,e=0;f>e;e+=j)i+=String.fromCharCode.apply(String,d.slice(e,f>=e+j?e+j:f));return i}function j(a){for(var b="",c=0;c<a.length;c++){var d=(255&a[c]).toString(16);d.length<2&&(b+="0"),b+=d}return b}function k(a){return btoa(i(a))}function l(a){return a-=1,a|=a>>>1,a|=a>>>2,a|=a>>>4,a|=a>>>8,a|=a>>>16,a+=1}function m(a){return"number"==typeof a}function n(a){return"string"==typeof a}function o(a){return a instanceof ArrayBuffer}function p(a){return a instanceof Uint8Array}function q(a){return a instanceof Int8Array||a instanceof Uint8Array||a instanceof Int16Array||a instanceof Uint16Array||a instanceof Int32Array||a instanceof Uint32Array||a instanceof Float32Array||a instanceof Float64Array}function r(a,b){var c=b.heap,d=c?c.byteLength:b.heapSize||65536;if(4095&d||0>=d)throw new Error("heap size must be a positive integer and a multiple of 4096");return c=c||new a(new ArrayBuffer(d))}function s(a,b,c,d,e){var f=a.length-b,g=e>f?f:e;return a.set(c.subarray(d,d+g),b),g}function t(a){a=a||{},this.heap=r(Uint8Array,a).subarray(Xb.HEAP_DATA),this.asm=a.asm||Xb(b,null,this.heap.buffer),this.mode=null,this.key=null,this.reset(a)}function u(a){if(void 0!==a){if(o(a)||p(a))a=new Uint8Array(a);else{if(!n(a))throw new TypeError("unexpected key type");a=f(a)}var b=a.length;if(16!==b&&24!==b&&32!==b)throw new d("illegal key size");var c=new DataView(a.buffer,a.byteOffset,a.byteLength);this.asm.set_key(b>>2,c.getUint32(0),c.getUint32(4),c.getUint32(8),c.getUint32(12),b>16?c.getUint32(16):0,b>16?c.getUint32(20):0,b>24?c.getUint32(24):0,b>24?c.getUint32(28):0),this.key=a}else if(!this.key)throw new Error("key is required")}function v(a){if(void 0!==a){if(o(a)||p(a))a=new Uint8Array(a);else{if(!n(a))throw new TypeError("unexpected iv type");a=f(a)}if(16!==a.length)throw new d("illegal iv size");var b=new DataView(a.buffer,a.byteOffset,a.byteLength);this.iv=a,this.asm.set_iv(b.getUint32(0),b.getUint32(4),b.getUint32(8),b.getUint32(12))}else this.iv=null,this.asm.set_iv(0,0,0,0)}function w(a){void 0!==a?this.padding=!!a:this.padding=!0}function x(a){return a=a||{},this.result=null,this.pos=0,this.len=0,u.call(this,a.key),this.hasOwnProperty("iv")&&v.call(this,a.iv),this.hasOwnProperty("padding")&&w.call(this,a.padding),this}function y(a){if(n(a)&&(a=f(a)),o(a)&&(a=new Uint8Array(a)),!p(a))throw new TypeError("data isn't of expected type");for(var b=this.asm,c=this.heap,d=Xb.ENC[this.mode],e=Xb.HEAP_DATA,g=this.pos,h=this.len,i=0,j=a.length||0,k=0,l=h+j&-16,m=0,q=new Uint8Array(l);j>0;)m=s(c,g+h,a,i,j),h+=m,i+=m,j-=m,m=b.cipher(d,e+g,h),m&&q.set(c.subarray(g,g+m),k),k+=m,h>m?(g+=m,h-=m):(g=0,h=0);return this.result=q,this.pos=g,this.len=h,this}function z(a){var b=null,c=0;void 0!==a&&(b=y.call(this,a).result,c=b.length);var e=this.asm,f=this.heap,g=Xb.ENC[this.mode],h=Xb.HEAP_DATA,i=this.pos,j=this.len,k=16-j%16,l=j;if(this.hasOwnProperty("padding")){if(this.padding){for(var m=0;k>m;++m)f[i+j+m]=k;j+=k,l=j}else if(j%16)throw new d("data length must be a multiple of the block size")}else j+=k;var n=new Uint8Array(c+l);return c&&n.set(b),j&&e.cipher(g,h+i,j),l&&n.set(f.subarray(i,i+l),c),this.result=n,this.pos=0,this.len=0,this}function A(a){if(n(a)&&(a=f(a)),o(a)&&(a=new Uint8Array(a)),!p(a))throw new TypeError("data isn't of expected type");var b=this.asm,c=this.heap,d=Xb.DEC[this.mode],e=Xb.HEAP_DATA,g=this.pos,h=this.len,i=0,j=a.length||0,k=0,l=h+j&-16,m=0,q=0;this.hasOwnProperty("padding")&&this.padding&&(m=h+j-l||16,l-=m);for(var r=new Uint8Array(l);j>0;)q=s(c,g+h,a,i,j),h+=q,i+=q,j-=q,q=b.cipher(d,e+g,h-(j?0:m)),q&&r.set(c.subarray(g,g+q),k),k+=q,h>q?(g+=q,h-=q):(g=0,h=0);return this.result=r,this.pos=g,this.len=h,this}function B(a){var b=null,c=0;void 0!==a&&(b=A.call(this,a).result,c=b.length);var f=this.asm,g=this.heap,h=Xb.DEC[this.mode],i=Xb.HEAP_DATA,j=this.pos,k=this.len,l=k;if(k>0){if(k%16){if(this.hasOwnProperty("padding"))throw new d("data length must be a multiple of the block size");k+=16-k%16}if(f.cipher(h,i+j,k),this.hasOwnProperty("padding")&&this.padding){var m=g[j+l-1];if(1>m||m>16||m>l)throw new e("bad padding");for(var n=0,o=m;o>1;o--)n|=m^g[j+l-o];if(n)throw new e("bad padding");l-=m}}var p=new Uint8Array(c+l);return c>0&&p.set(b),l>0&&p.set(g.subarray(j,j+l),c),this.result=p,this.pos=0,this.len=0,this}function C(a){this.padding=!0,this.iv=null,t.call(this,a),this.mode="CBC"}function D(a){C.call(this,a)}function E(a){C.call(this,a)}function F(a){this.nonce=null,this.counter=0,this.counterSize=0,t.call(this,a),this.mode="CTR"}function G(a){F.call(this,a)}function H(a,b,c){if(void 0!==c){if(8>c||c>48)throw new d("illegal counter size");this.counterSize=c;var e=Math.pow(2,c)-1;this.asm.set_mask(0,0,e/4294967296|0,0|e)}else this.counterSize=c=48,this.asm.set_mask(0,0,65535,4294967295);if(void 0===a)throw new Error("nonce is required");if(o(a)||p(a))a=new Uint8Array(a);else{if(!n(a))throw new TypeError("unexpected nonce type");a=f(a)}var g=a.length;if(!g||g>16)throw new d("illegal nonce size");this.nonce=a;var h=new DataView(new ArrayBuffer(16));if(new Uint8Array(h.buffer).set(a),this.asm.set_nonce(h.getUint32(0),h.getUint32(4),h.getUint32(8),h.getUint32(12)),void 0!==b){if(!m(b))throw new TypeError("unexpected counter type");if(0>b||b>=Math.pow(2,c))throw new d("illegal counter value");this.counter=b,this.asm.set_counter(0,0,b/4294967296|0,0|b)}else this.counter=b=0}function I(a){return a=a||{},x.call(this,a),H.call(this,a.nonce,a.counter,a.counterSize),this}function J(a){for(var b=this.heap,c=this.asm,d=0,e=a.length||0,f=0;e>0;){for(f=s(b,0,a,d,e),d+=f,e-=f;15&f;)b[f++]=0;c.mac(Xb.MAC.GCM,Xb.HEAP_DATA,f)}}function K(a){this.nonce=null,this.adata=null,this.iv=null,this.counter=1,this.tagSize=16,t.call(this,a),this.mode="GCM"}function L(a){K.call(this,a)}function M(a){K.call(this,a)}function N(a){a=a||{},x.call(this,a);var b=this.asm,c=this.heap;b.gcm_init();var e=a.tagSize;if(void 0!==e){if(!m(e))throw new TypeError("tagSize must be a number");if(4>e||e>16)throw new d("illegal tagSize value");this.tagSize=e}else this.tagSize=16;var g=a.nonce;if(void 0===g)throw new Error("nonce is required");if(p(g)||o(g))g=new Uint8Array(g);else{if(!n(g))throw new TypeError("unexpected nonce type");g=f(g)}this.nonce=g;var h=g.length||0,i=new Uint8Array(16);12!==h?(J.call(this,g),c[0]=c[1]=c[2]=c[3]=c[4]=c[5]=c[6]=c[7]=c[8]=c[9]=c[10]=0,c[11]=h>>>29,c[12]=h>>>21&255,c[13]=h>>>13&255,c[14]=h>>>5&255,c[15]=h<<3&255,b.mac(Xb.MAC.GCM,Xb.HEAP_DATA,16),b.get_iv(Xb.HEAP_DATA),b.set_iv(),i.set(c.subarray(0,16))):(i.set(g),i[15]=1);var j=new DataView(i.buffer);this.gamma0=j.getUint32(12),b.set_nonce(j.getUint32(0),j.getUint32(4),j.getUint32(8),0),b.set_mask(0,0,0,4294967295);var k=a.adata;if(void 0!==k&&null!==k){if(p(k)||o(k))k=new Uint8Array(k);else{if(!n(k))throw new TypeError("unexpected adata type");k=f(k)}if(k.length>bc)throw new d("illegal adata length");k.length?(this.adata=k,J.call(this,k)):this.adata=null}else this.adata=null;var l=a.counter;if(void 0!==l){if(!m(l))throw new TypeError("counter must be a number");if(1>l||l>4294967295)throw new RangeError("counter must be a positive 32-bit integer");this.counter=l,b.set_counter(0,0,0,this.gamma0+l|0)}else this.counter=1,b.set_counter(0,0,0,this.gamma0+1|0);var q=a.iv;if(void 0!==q){if(!m(l))throw new TypeError("counter must be a number");this.iv=q,v.call(this,q)}return this}function O(a){if(n(a)&&(a=f(a)),o(a)&&(a=new Uint8Array(a)),!p(a))throw new TypeError("data isn't of expected type");var b=0,c=a.length||0,d=this.asm,e=this.heap,g=this.counter,h=this.pos,i=this.len,j=0,k=i+c&-16,l=0;if((g-1<<4)+i+c>bc)throw new RangeError("counter overflow");for(var m=new Uint8Array(k);c>0;)l=s(e,h+i,a,b,c),i+=l,b+=l,c-=l,l=d.cipher(Xb.ENC.CTR,Xb.HEAP_DATA+h,i),l=d.mac(Xb.MAC.GCM,Xb.HEAP_DATA+h,l),l&&m.set(e.subarray(h,h+l),j),g+=l>>>4,j+=l,i>l?(h+=l,i-=l):(h=0,i=0);return this.result=m,this.counter=g,this.pos=h,this.len=i,this}function P(){var a=this.asm,b=this.heap,c=this.counter,d=this.tagSize,e=this.adata,f=this.pos,g=this.len,h=new Uint8Array(g+d);a.cipher(Xb.ENC.CTR,Xb.HEAP_DATA+f,g+15&-16),g&&h.set(b.subarray(f,f+g));for(var i=g;15&i;i++)b[f+i]=0;a.mac(Xb.MAC.GCM,Xb.HEAP_DATA+f,i);var j=null!==e?e.length:0,k=(c-1<<4)+g;return b[0]=b[1]=b[2]=0,b[3]=j>>>29,b[4]=j>>>21,b[5]=j>>>13&255,b[6]=j>>>5&255,b[7]=j<<3&255,b[8]=b[9]=b[10]=0,b[11]=k>>>29,b[12]=k>>>21&255,b[13]=k>>>13&255,b[14]=k>>>5&255,b[15]=k<<3&255,a.mac(Xb.MAC.GCM,Xb.HEAP_DATA,16),a.get_iv(Xb.HEAP_DATA),a.set_counter(0,0,0,this.gamma0),a.cipher(Xb.ENC.CTR,Xb.HEAP_DATA,16),h.set(b.subarray(0,d),g),this.result=h,this.counter=1,this.pos=0,this.len=0,this}function Q(a){var b=O.call(this,a).result,c=P.call(this).result,d=new Uint8Array(b.length+c.length);return b.length&&d.set(b),c.length&&d.set(c,b.length),this.result=d,this}function R(a){if(n(a)&&(a=f(a)),o(a)&&(a=new Uint8Array(a)),!p(a))throw new TypeError("data isn't of expected type");var b=0,c=a.length||0,d=this.asm,e=this.heap,g=this.counter,h=this.tagSize,i=this.pos,j=this.len,k=0,l=j+c>h?j+c-h&-16:0,m=j+c-l,q=0;if((g-1<<4)+j+c>bc)throw new RangeError("counter overflow");for(var r=new Uint8Array(l);c>m;)q=s(e,i+j,a,b,c-m),j+=q,b+=q,c-=q,q=d.mac(Xb.MAC.GCM,Xb.HEAP_DATA+i,q),q=d.cipher(Xb.DEC.CTR,Xb.HEAP_DATA+i,q),q&&r.set(e.subarray(i,i+q),k),g+=q>>>4,k+=q,i=0,j=0;return c>0&&(j+=s(e,0,a,b,c)),this.result=r,this.counter=g,this.pos=i,this.len=j,this}function S(){var a=this.asm,b=this.heap,d=this.tagSize,f=this.adata,g=this.counter,h=this.pos,i=this.len,j=i-d,k=0;if(d>i)throw new c("authentication tag not found");for(var l=new Uint8Array(j),m=new Uint8Array(b.subarray(h+j,h+i)),n=j;15&n;n++)b[h+n]=0;k=a.mac(Xb.MAC.GCM,Xb.HEAP_DATA+h,n),k=a.cipher(Xb.DEC.CTR,Xb.HEAP_DATA+h,n),j&&l.set(b.subarray(h,h+j));var o=null!==f?f.length:0,p=(g-1<<4)+i-d;b[0]=b[1]=b[2]=0,b[3]=o>>>29,b[4]=o>>>21,b[5]=o>>>13&255,b[6]=o>>>5&255,b[7]=o<<3&255,b[8]=b[9]=b[10]=0,b[11]=p>>>29,b[12]=p>>>21&255,b[13]=p>>>13&255,b[14]=p>>>5&255,b[15]=p<<3&255,a.mac(Xb.MAC.GCM,Xb.HEAP_DATA,16),a.get_iv(Xb.HEAP_DATA),a.set_counter(0,0,0,this.gamma0),a.cipher(Xb.ENC.CTR,Xb.HEAP_DATA,16);for(var q=0,n=0;d>n;++n)q|=m[n]^b[n];if(q)throw new e("data integrity check failed");return this.result=l,this.counter=1,this.pos=0,this.len=0,this}function T(a){var b=R.call(this,a).result,c=S.call(this).result,d=new Uint8Array(b.length+c.length);return b.length&&d.set(b),c.length&&d.set(c,b.length),this.result=d,this}function U(a,b,c,d){if(void 0===a)throw new SyntaxError("data required");if(void 0===b)throw new SyntaxError("key required");return new C({heap:fc,asm:gc,key:b,padding:c,iv:d}).encrypt(a).result}function V(a,b,c,d){if(void 0===a)throw new SyntaxError("data required");if(void 0===b)throw new SyntaxError("key required");return new C({heap:fc,asm:gc,key:b,padding:c,iv:d}).decrypt(a).result}function W(a,b,c,d,e){if(void 0===a)throw new SyntaxError("data required");if(void 0===b)throw new SyntaxError("key required");if(void 0===c)throw new SyntaxError("nonce required");return new K({heap:fc,asm:gc,key:b,nonce:c,adata:d,tagSize:e}).encrypt(a).result}function X(a,b,c,d,e){if(void 0===a)throw new SyntaxError("data required");if(void 0===b)throw new SyntaxError("key required");if(void 0===c)throw new SyntaxError("nonce required");return new K({heap:fc,asm:gc,key:b,nonce:c,adata:d,tagSize:e}).decrypt(a).result}function Y(){return this.result=null,this.pos=0,this.len=0,this.asm.reset(),this}function Z(a){if(null!==this.result)throw new c("state must be reset before processing new data");if(n(a)&&(a=f(a)),o(a)&&(a=new Uint8Array(a)),!p(a))throw new TypeError("data isn't of expected type");for(var b=this.asm,d=this.heap,e=this.pos,g=this.len,h=0,i=a.length,j=0;i>0;)j=s(d,e+g,a,h,i),g+=j,h+=j,i-=j,j=b.process(e,g),e+=j,g-=j,g||(e=0);return this.pos=e,this.len=g,this}function $(){if(null!==this.result)throw new c("state must be reset before processing new data");return this.asm.finish(this.pos,this.len,0),this.result=new Uint8Array(this.HASH_SIZE),this.result.set(this.heap.subarray(0,this.HASH_SIZE)),this.pos=0,this.len=0,this}function _(a,b,c){"use asm";var d=0,e=0,f=0,g=0,h=0,i=0,j=0;var k=0,l=0,m=0,n=0,o=0,p=0,q=0,r=0,s=0,t=0;var u=new a.Uint8Array(c);function v(a,b,c,i,j,k,l,m,n,o,p,q,r,s,t,u){a=a|0;b=b|0;c=c|0;i=i|0;j=j|0;k=k|0;l=l|0;m=m|0;n=n|0;o=o|0;p=p|0;q=q|0;r=r|0;s=s|0;t=t|0;u=u|0;var 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w(a){a=a|0;v(u[a|0]<<24|u[a|1]<<16|u[a|2]<<8|u[a|3],u[a|4]<<24|u[a|5]<<16|u[a|6]<<8|u[a|7],u[a|8]<<24|u[a|9]<<16|u[a|10]<<8|u[a|11],u[a|12]<<24|u[a|13]<<16|u[a|14]<<8|u[a|15],u[a|16]<<24|u[a|17]<<16|u[a|18]<<8|u[a|19],u[a|20]<<24|u[a|21]<<16|u[a|22]<<8|u[a|23],u[a|24]<<24|u[a|25]<<16|u[a|26]<<8|u[a|27],u[a|28]<<24|u[a|29]<<16|u[a|30]<<8|u[a|31],u[a|32]<<24|u[a|33]<<16|u[a|34]<<8|u[a|35],u[a|36]<<24|u[a|37]<<16|u[a|38]<<8|u[a|39],u[a|40]<<24|u[a|41]<<16|u[a|42]<<8|u[a|43],u[a|44]<<24|u[a|45]<<16|u[a|46]<<8|u[a|47],u[a|48]<<24|u[a|49]<<16|u[a|50]<<8|u[a|51],u[a|52]<<24|u[a|53]<<16|u[a|54]<<8|u[a|55],u[a|56]<<24|u[a|57]<<16|u[a|58]<<8|u[a|59],u[a|60]<<24|u[a|61]<<16|u[a|62]<<8|u[a|63])}function x(a){a=a|0;u[a|0]=d>>>24;u[a|1]=d>>>16&255;u[a|2]=d>>>8&255;u[a|3]=d&255;u[a|4]=e>>>24;u[a|5]=e>>>16&255;u[a|6]=e>>>8&255;u[a|7]=e&255;u[a|8]=f>>>24;u[a|9]=f>>>16&255;u[a|10]=f>>>8&255;u[a|11]=f&255;u[a|12]=g>>>24;u[a|13]=g>>>16&255;u[a|14]=g>>>8&255;u[a|15]=g&255;u[a|16]=h>>>24;u[a|17]=h>>>16&255;u[a|18]=h>>>8&255;u[a|19]=h&255}function y(){d=1732584193;e=4023233417;f=2562383102;g=271733878;h=3285377520;i=j=0}function z(a,b,c,k,l,m,n){a=a|0;b=b|0;c=c|0;k=k|0;l=l|0;m=m|0;n=n|0;d=a;e=b;f=c;g=k;h=l;i=m;j=n}function A(a,b){a=a|0;b=b|0;var c=0;if(a&63)return-1;while((b|0)>=64){w(a);a=a+64|0;b=b-64|0;c=c+64|0}i=i+c|0;if(i>>>0<c>>>0)j=j+1|0;return c|0}function B(a,b,c){a=a|0;b=b|0;c=c|0;var 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F(a){a=a|0;E(D[a|0]<<24|D[a|1]<<16|D[a|2]<<8|D[a|3],D[a|4]<<24|D[a|5]<<16|D[a|6]<<8|D[a|7],D[a|8]<<24|D[a|9]<<16|D[a|10]<<8|D[a|11],D[a|12]<<24|D[a|13]<<16|D[a|14]<<8|D[a|15],D[a|16]<<24|D[a|17]<<16|D[a|18]<<8|D[a|19],D[a|20]<<24|D[a|21]<<16|D[a|22]<<8|D[a|23],D[a|24]<<24|D[a|25]<<16|D[a|26]<<8|D[a|27],D[a|28]<<24|D[a|29]<<16|D[a|30]<<8|D[a|31],D[a|32]<<24|D[a|33]<<16|D[a|34]<<8|D[a|35],D[a|36]<<24|D[a|37]<<16|D[a|38]<<8|D[a|39],D[a|40]<<24|D[a|41]<<16|D[a|42]<<8|D[a|43],D[a|44]<<24|D[a|45]<<16|D[a|46]<<8|D[a|47],D[a|48]<<24|D[a|49]<<16|D[a|50]<<8|D[a|51],D[a|52]<<24|D[a|53]<<16|D[a|54]<<8|D[a|55],D[a|56]<<24|D[a|57]<<16|D[a|58]<<8|D[a|59],D[a|60]<<24|D[a|61]<<16|D[a|62]<<8|D[a|63])}function G(a){a=a|0;D[a|0]=d>>>24;D[a|1]=d>>>16&255;D[a|2]=d>>>8&255;D[a|3]=d&255;D[a|4]=e>>>24;D[a|5]=e>>>16&255;D[a|6]=e>>>8&255;D[a|7]=e&255;D[a|8]=f>>>24;D[a|9]=f>>>16&255;D[a|10]=f>>>8&255;D[a|11]=f&255;D[a|12]=g>>>24;D[a|13]=g>>>16&255;D[a|14]=g>>>8&255;D[a|15]=g&255;D[a|16]=h>>>24;D[a|17]=h>>>16&255;D[a|18]=h>>>8&255;D[a|19]=h&255;D[a|20]=i>>>24;D[a|21]=i>>>16&255;D[a|22]=i>>>8&255;D[a|23]=i&255;D[a|24]=j>>>24;D[a|25]=j>>>16&255;D[a|26]=j>>>8&255;D[a|27]=j&255;D[a|28]=k>>>24;D[a|29]=k>>>16&255;D[a|30]=k>>>8&255;D[a|31]=k&255}function H(){d=1779033703;e=3144134277;f=1013904242;g=2773480762;h=1359893119;i=2600822924;j=528734635;k=1541459225;l=m=0}function I(a,b,c,n,o,p,q,r,s,t){a=a|0;b=b|0;c=c|0;n=n|0;o=o|0;p=p|0;q=q|0;r=r|0;s=s|0;t=t|0;d=a;e=b;f=c;g=n;h=o;i=p;j=q;k=r;l=s;m=t}function J(a,b){a=a|0;b=b|0;var c=0;if(a&63)return-1;while((b|0)>=64){F(a);a=a+64|0;b=b-64|0;c=c+64|0}l=l+c|0;if(l>>>0<c>>>0)m=m+1|0;return c|0}function K(a,b,c){a=a|0;b=b|0;c=c|0;var d=0,e=0;if(a&63)return-1;if(~c)if(c&31)return-1;if((b|0)>=64){d=J(a,b)|0;if((d|0)==-1)return-1;a=a+d|0;b=b-d|0}d=d+b|0;l=l+b|0;if(l>>>0<b>>>0)m=m+1|0;D[a|b]=128;if((b|0)>=56){for(e=b+1|0;(e|0)<64;e=e+1|0)D[a|e]=0;F(a);b=0;D[a|0]=0}for(e=b+1|0;(e|0)<59;e=e+1|0)D[a|e]=0;D[a|56]=m>>>21&255;D[a|57]=m>>>13&255;D[a|58]=m>>>5&255;D[a|59]=m<<3&255|l>>>29;D[a|60]=l>>>21&255;D[a|61]=l>>>13&255;D[a|62]=l>>>5&255;D[a|63]=l<<3&255;F(a);if(~c)G(c);return d|0}function L(){d=n;e=o;f=p;g=q;h=r;i=s;j=t;k=u;l=64;m=0}function M(){d=v;e=w;f=x;g=y;h=z;i=A;j=B;k=C;l=64;m=0}function N(a,b,c,D,F,G,I,J,K,L,M,N,O,P,Q,R){a=a|0;b=b|0;c=c|0;D=D|0;F=F|0;G=G|0;I=I|0;J=J|0;K=K|0;L=L|0;M=M|0;N=N|0;O=O|0;P=P|0;Q=Q|0;R=R|0;H();E(a^1549556828,b^1549556828,c^1549556828,D^1549556828,F^1549556828,G^1549556828,I^1549556828,J^1549556828,K^1549556828,L^1549556828,M^1549556828,N^1549556828,O^1549556828,P^1549556828,Q^1549556828,R^1549556828);v=d;w=e;x=f;y=g;z=h;A=i;B=j;C=k;H();E(a^909522486,b^909522486,c^909522486,D^909522486,F^909522486,G^909522486,I^909522486,J^909522486,K^909522486,L^909522486,M^909522486,N^909522486,O^909522486,P^909522486,Q^909522486,R^909522486);n=d;o=e;p=f;q=g;r=h;s=i;t=j;u=k;l=64;m=0}function O(a,b,c){a=a|0;b=b|0;c=c|0;var l=0,m=0,n=0,o=0,p=0,q=0,r=0,s=0,t=0;if(a&63)return-1;if(~c)if(c&31)return-1;t=K(a,b,-1)|0;l=d,m=e,n=f,o=g,p=h,q=i,r=j,s=k;M();E(l,m,n,o,p,q,r,s,2147483648,0,0,0,0,0,0,768);if(~c)G(c);return t|0}function P(a,b,c,l,m){a=a|0;b=b|0;c=c|0;l=l|0;m=m|0;var n=0,o=0,p=0,q=0,r=0,s=0,t=0,u=0,v=0,w=0,x=0,y=0,z=0,A=0,B=0,C=0;if(a&63)return-1;if(~m)if(m&31)return-1;D[a+b|0]=c>>>24;D[a+b+1|0]=c>>>16&255;D[a+b+2|0]=c>>>8&255;D[a+b+3|0]=c&255;O(a,b+4|0,-1)|0;n=v=d,o=w=e,p=x=f,q=y=g,r=z=h,s=A=i,t=B=j,u=C=k;l=l-1|0;while((l|0)>0){L();E(v,w,x,y,z,A,B,C,2147483648,0,0,0,0,0,0,768);v=d,w=e,x=f,y=g,z=h,A=i,B=j,C=k;M();E(v,w,x,y,z,A,B,C,2147483648,0,0,0,0,0,0,768);v=d,w=e,x=f,y=g,z=h,A=i,B=j,C=k;n=n^d;o=o^e;p=p^f;q=q^g;r=r^h;s=s^i;t=t^j;u=u^k;l=l-1|0}d=n;e=o;f=p;g=q;h=r;i=s;j=t;k=u;if(~m)G(m);return 0}return{reset:H,init:I,process:J,finish:K,hmac_reset:L,hmac_init:N,hmac_finish:O,pbkdf2_generate_block:P}}function ga(a){a=a||{},this.heap=r(Uint8Array,a),this.asm=a.asm||fa(b,null,this.heap.buffer),this.BLOCK_SIZE=lc,this.HASH_SIZE=mc,this.reset()}function ha(){return null===oc&&(oc=new ga({heapSize:1048576})),oc}function ia(a){if(void 0===a)throw new SyntaxError("data required");return ha().reset().process(a).finish().result}function ja(a){var b=ia(a);return j(b)}function ka(a){var b=ia(a);return k(b)}function la(a){if(a=a||{},!a.hash)throw new SyntaxError("option 'hash' is required");if(!a.hash.HASH_SIZE)throw new SyntaxError("option 'hash' supplied doesn't seem to be a valid hash function");return this.hash=a.hash,this.BLOCK_SIZE=this.hash.BLOCK_SIZE,this.HMAC_SIZE=this.hash.HASH_SIZE,this.key=null,this.verify=null,this.result=null,(void 0!==a.password||void 0!==a.verify)&&this.reset(a),this}function ma(a,b){if(o(b)&&(b=new Uint8Array(b)),n(b)&&(b=f(b)),!p(b))throw new TypeError("password isn't of expected type");var c=new Uint8Array(a.BLOCK_SIZE);return b.length>a.BLOCK_SIZE?c.set(a.reset().process(b).finish().result):c.set(b),c}function na(a){if(o(a)||p(a))a=new Uint8Array(a);else{if(!n(a))throw new TypeError("verify tag isn't of expected type");a=f(a)}if(a.length!==this.HMAC_SIZE)throw new d("illegal verification tag size");this.verify=a}function oa(a){a=a||{};var b=a.password;if(null===this.key&&!n(b)&&!b)throw new c("no key is associated with the instance");this.result=null,this.hash.reset(),(b||n(b))&&(this.key=ma(this.hash,b));for(var d=new Uint8Array(this.key),e=0;e<d.length;++e)d[e]^=54;this.hash.process(d);var f=a.verify;return void 0!==f?na.call(this,f):this.verify=null,this}function pa(a){if(null===this.key)throw new c("no key is associated with the instance");if(null!==this.result)throw new c("state must be reset before processing new data");return this.hash.process(a),this}function qa(){if(null===this.key)throw new c("no key is associated with the instance");if(null!==this.result)throw new c("state must be reset before processing new data");for(var a=this.hash.finish().result,b=new Uint8Array(this.key),d=0;d<b.length;++d)b[d]^=92;var e=this.verify,f=this.hash.reset().process(b).process(a).finish().result;if(e)if(e.length===f.length){for(var g=0,d=0;d<e.length;d++)g|=e[d]^f[d];this.result=!g}else this.result=!1;else this.result=f;return this}function ra(a){return a=a||{},a.hash instanceof aa||(a.hash=ba()),la.call(this,a),this}function sa(a){a=a||{},this.result=null,this.hash.reset();var b=a.password;if(void 0!==b){n(b)&&(b=f(b));var c=this.key=ma(this.hash,b);this.hash.reset().asm.hmac_init(c[0]<<24|c[1]<<16|c[2]<<8|c[3],c[4]<<24|c[5]<<16|c[6]<<8|c[7],c[8]<<24|c[9]<<16|c[10]<<8|c[11],c[12]<<24|c[13]<<16|c[14]<<8|c[15],c[16]<<24|c[17]<<16|c[18]<<8|c[19],c[20]<<24|c[21]<<16|c[22]<<8|c[23],c[24]<<24|c[25]<<16|c[26]<<8|c[27],c[28]<<24|c[29]<<16|c[30]<<8|c[31],c[32]<<24|c[33]<<16|c[34]<<8|c[35],c[36]<<24|c[37]<<16|c[38]<<8|c[39],c[40]<<24|c[41]<<16|c[42]<<8|c[43],c[44]<<24|c[45]<<16|c[46]<<8|c[47],c[48]<<24|c[49]<<16|c[50]<<8|c[51],c[52]<<24|c[53]<<16|c[54]<<8|c[55],c[56]<<24|c[57]<<16|c[58]<<8|c[59],c[60]<<24|c[61]<<16|c[62]<<8|c[63])}else this.hash.asm.hmac_reset();var d=a.verify;return void 0!==d?na.call(this,d):this.verify=null,this}function ta(){if(null===this.key)throw new c("no key is associated with the instance");if(null!==this.result)throw new c("state must be reset before processing new data");var a=this.hash,b=this.hash.asm,d=this.hash.heap;b.hmac_finish(a.pos,a.len,0);var e=this.verify,f=new Uint8Array(ic);if(f.set(d.subarray(0,ic)),e)if(e.length===f.length){for(var g=0,h=0;h<e.length;h++)g|=e[h]^f[h];this.result=!g}else this.result=!1;else this.result=f;return this}function ua(){return null===rc&&(rc=new ra),rc}function va(a){return a=a||{},a.hash instanceof ga||(a.hash=ha()),la.call(this,a),this}function wa(a){a=a||{},this.result=null,this.hash.reset();var b=a.password;if(void 0!==b){n(b)&&(b=f(b));var c=this.key=ma(this.hash,b);this.hash.reset().asm.hmac_init(c[0]<<24|c[1]<<16|c[2]<<8|c[3],c[4]<<24|c[5]<<16|c[6]<<8|c[7],c[8]<<24|c[9]<<16|c[10]<<8|c[11],c[12]<<24|c[13]<<16|c[14]<<8|c[15],c[16]<<24|c[17]<<16|c[18]<<8|c[19],c[20]<<24|c[21]<<16|c[22]<<8|c[23],c[24]<<24|c[25]<<16|c[26]<<8|c[27],c[28]<<24|c[29]<<16|c[30]<<8|c[31],c[32]<<24|c[33]<<16|c[34]<<8|c[35],c[36]<<24|c[37]<<16|c[38]<<8|c[39],c[40]<<24|c[41]<<16|c[42]<<8|c[43],c[44]<<24|c[45]<<16|c[46]<<8|c[47],c[48]<<24|c[49]<<16|c[50]<<8|c[51],c[52]<<24|c[53]<<16|c[54]<<8|c[55],c[56]<<24|c[57]<<16|c[58]<<8|c[59],c[60]<<24|c[61]<<16|c[62]<<8|c[63])}else this.hash.asm.hmac_reset();var d=a.verify;return void 0!==d?na.call(this,d):this.verify=null,this}function xa(){if(null===this.key)throw new c("no key is associated with the instance");if(null!==this.result)throw new c("state must be reset before processing new data");var a=this.hash,b=this.hash.asm,d=this.hash.heap;b.hmac_finish(a.pos,a.len,0);var e=this.verify,f=new Uint8Array(mc);if(f.set(d.subarray(0,mc)),e)if(e.length===f.length){for(var g=0,h=0;h<e.length;h++)g|=e[h]^f[h];this.result=!g}else this.result=!1;else this.result=f;return this}function ya(){return null===tc&&(tc=new va),tc}function za(a,b){if(void 0===a)throw new SyntaxError("data required");if(void 0===b)throw new SyntaxError("password required");return ua().reset({password:b}).process(a).finish().result}function Aa(a,b){var c=za(a,b);return j(c)}function Ba(a,b){var c=za(a,b);return k(c)}function Ca(a,b){if(void 0===a)throw new SyntaxError("data required");if(void 0===b)throw new SyntaxError("password required");return ya().reset({password:b}).process(a).finish().result}function Da(a,b){var c=Ca(a,b);return j(c)}function Ea(a,b){var c=Ca(a,b);return k(c)}function Fa(a){if(a=a||{},!a.hmac)throw new SyntaxError("option 'hmac' is required");if(!a.hmac.HMAC_SIZE)throw new SyntaxError("option 'hmac' supplied doesn't seem to be a valid HMAC function");this.hmac=a.hmac,this.count=a.count||4096,this.length=a.length||this.hmac.HMAC_SIZE,this.result=null;var b=a.password;return(b||n(b))&&this.reset(a),this}function Ga(a){return this.result=null,this.hmac.reset(a),this}function Ha(a,b,e){if(null!==this.result)throw new c("state must be reset before processing new data");if(!a&&!n(a))throw new d("bad 'salt' value");b=b||this.count,e=e||this.length,this.result=new Uint8Array(e);for(var f=Math.ceil(e/this.hmac.HMAC_SIZE),g=1;f>=g;++g){var h=(g-1)*this.hmac.HMAC_SIZE,i=(f>g?0:e%this.hmac.HMAC_SIZE)||this.hmac.HMAC_SIZE,j=new Uint8Array(this.hmac.reset().process(a).process(new Uint8Array([g>>>24&255,g>>>16&255,g>>>8&255,255&g])).finish().result);this.result.set(j.subarray(0,i),h);for(var k=1;b>k;++k){j=new Uint8Array(this.hmac.reset().process(j).finish().result);for(var l=0;i>l;++l)this.result[h+l]^=j[l]}}return this}function Ia(a){return a=a||{},a.hmac instanceof ra||(a.hmac=ua()),Fa.call(this,a),this}function Ja(a,b,e){if(null!==this.result)throw new c("state must be reset before processing new data");if(!a&&!n(a))throw new d("bad 'salt' value");b=b||this.count,e=e||this.length,this.result=new Uint8Array(e);for(var f=Math.ceil(e/this.hmac.HMAC_SIZE),g=1;f>=g;++g){var h=(g-1)*this.hmac.HMAC_SIZE,i=(f>g?0:e%this.hmac.HMAC_SIZE)||this.hmac.HMAC_SIZE;this.hmac.reset().process(a),this.hmac.hash.asm.pbkdf2_generate_block(this.hmac.hash.pos,this.hmac.hash.len,g,b,0),this.result.set(this.hmac.hash.heap.subarray(0,i),h)}return this}function Ka(){return null===wc&&(wc=new Ia),wc}function La(a){return a=a||{},a.hmac instanceof va||(a.hmac=ya()),Fa.call(this,a),this}function Ma(a,b,e){if(null!==this.result)throw new c("state must be reset before processing new data");if(!a&&!n(a))throw new d("bad 'salt' value");b=b||this.count,e=e||this.length,this.result=new Uint8Array(e);for(var f=Math.ceil(e/this.hmac.HMAC_SIZE),g=1;f>=g;++g){var h=(g-1)*this.hmac.HMAC_SIZE,i=(f>g?0:e%this.hmac.HMAC_SIZE)||this.hmac.HMAC_SIZE;this.hmac.reset().process(a),this.hmac.hash.asm.pbkdf2_generate_block(this.hmac.hash.pos,this.hmac.hash.len,g,b,0),this.result.set(this.hmac.hash.heap.subarray(0,i),h)}return this}function Na(){return null===yc&&(yc=new La),yc}function Oa(a,b,c,d){if(void 0===a)throw new SyntaxError("password required");if(void 0===b)throw new SyntaxError("salt required");return Ka().reset({password:a}).generate(b,c,d).result}function Pa(a,b,c,d){var e=Oa(a,b,c,d);return j(e)}function Qa(a,b,c,d){var e=Oa(a,b,c,d);return k(e)}function Ra(a,b,c,d){if(void 0===a)throw new SyntaxError("password required");if(void 0===b)throw new SyntaxError("salt required");return Na().reset({password:a}).generate(b,c,d).result}function Sa(a,b,c,d){var e=Ra(a,b,c,d);return j(e)}function Ta(a,b,c,d){var e=Ra(a,b,c,d);return k(e)}function Ua(){if(void 0!==Ec)d=new Uint8Array(32),zc.call(Ec,d),Hc(d);else{var a,c,d=new Ub(3);d[0]=Cc(),d[1]=Bc(),d[2]=Fc(),d=new Uint8Array(d.buffer);var e=Na();for(a=0;100>a;a++)d=e.reset({password:d}).generate(b.location.href,1e3,32).result,c=Fc(),d[0]^=c>>>24,d[1]^=c>>>16,d[2]^=c>>>8,d[3]^=c;Hc(d)}Ic=0,Jc=!0}function Va(a){if(!o(a)&&!q(a))throw new TypeError("bad seed type");var b=a.byteOffest||0,c=a.byteLength||a.length,d=new Uint8Array(a.buffer||a,b,c);Hc(d),Ic=0;for(var e=0,f=0;f<d.length;f++)e|=d[f],d[f]=0;return 0!==e&&(Lc+=4*c),Kc=Lc>=Mc}function Wa(a){if(Jc||Ua(),!Kc&&void 0===Ec){if(!Nc)throw new e("No strong PRNGs available. Use asmCrypto.random.seed().");void 0!==Vb&&Vb.error("No strong PRNGs available; your security is greatly lowered. Use asmCrypto.random.seed().")}if(!Oc&&!Kc&&void 0!==Ec&&void 0!==Vb){var b=(new Error).stack;Pc[b]|=0,Pc[b]++||Vb.warn("asmCrypto PRNG not seeded; your security relies on your system PRNG. If this is not acceptable, use asmCrypto.random.seed().")}if(!o(a)&&!q(a))throw new TypeError("unexpected buffer type");var c,d,f=a.byteOffset||0,g=a.byteLength||a.length,h=new Uint8Array(a.buffer||a,f,g);for(void 0!==Ec&&zc.call(Ec,h),c=0;g>c;c++)0===(3&c)&&(Ic>=1099511627776&&Ua(),d=Gc(),Ic++),h[c]^=d,d>>>=8;return a}function Xa(){(!Jc||Ic>=1099511627776)&&Ua();var a=(1048576*Gc()+(Gc()>>>12))/4503599627370496;return Ic+=2,a}function Ya(a,b){return a*b|0}function Za(a,b,c){"use asm";var d=0;var e=new a.Uint32Array(c);var f=a.Math.imul;function g(a){a=a|0;d=a=a+31&-32;return a|0}function h(a){a=a|0;var b=0;b=d;d=b+(a+31&-32)|0;return b|0}function i(a){a=a|0;d=d-(a+31&-32)|0}function j(a,b,c){a=a|0;b=b|0;c=c|0;var d=0;if((b|0)>(c|0)){for(;(d|0)<(a|0);d=d+4|0){e[c+d>>2]=e[b+d>>2]}}else{for(d=a-4|0;(d|0)>=0;d=d-4|0){e[c+d>>2]=e[b+d>>2]}}}function k(a,b,c){a=a|0;b=b|0;c=c|0;var d=0;for(;(d|0)<(a|0);d=d+4|0){e[c+d>>2]=b}}function l(a,b,c,d){a=a|0;b=b|0;c=c|0;d=d|0;var 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,e[(ka|12)>>2]=R,e[(ka|16)>>2]=S,e[(ka|20)>>2]=T,e[(ka|24)>>2]=U,e[(ka|28)>>2]=V}ka=g+(ga+ia|0)|0;e[(ka|0)>>2]=W,e[(ka|4)>>2]=X,e[(ka|8)>>2]=Y,e[(ka|12)>>2]=Z,e[(ka|16)>>2]=$,e[(ka|20)>>2]=_,e[(ka|24)>>2]=aa,e[(ka|28)>>2]=ba}}function r(a,b,c){a=a|0;b=b|0;c=c|0;var d=0,g=0,h=0,i=0,j=0,k=0,l=0,m=0,n=0,o=0,p=0,q=0,r=0,s=0,t=0,u=0,v=0,w=0,x=0,y=0,z=0,A=0,B=0,C=0,D=0,E=0,F=0,G=0,H=0,I=0,J=0,K=0,L=0,M=0,N=0,O=0,P=0,Q=0,R=0,S=0,T=0,U=0,V=0,W=0,X=0,Y=0,Z=0,$=0,_=0,aa=0,ba=0,ca=0,da=0,ea=0,fa=0,ga=0,ha=0,ia=0,ja=0,ka=0,la=0,ma=0,na=0,oa=0;for(;(ja|0)<(b|0);ja=ja+4|0){oa=c+(ja<<1)|0;n=e[a+ja>>2]|0,d=n&65535,n=n>>>16;_=f(d,d)|0;aa=(f(d,n)|0)+(_>>>17)|0;ba=(f(n,n)|0)+(aa>>>15)|0;e[oa>>2]=aa<<17|_&131071;e[(oa|4)>>2]=ba}for(ia=0;(ia|0)<(b|0);ia=ia+8|0){ma=a+ia|0,oa=c+(ia<<1)|0;n=e[ma>>2]|0,d=n&65535,n=n>>>16;D=e[(ma|4)>>2]|0,v=D&65535,D=D>>>16;_=f(d,v)|0;aa=(f(d,D)|0)+(_>>>16)|0;ba=(f(n,v)|0)+(aa&65535)|0;ea=((f(n,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;fa=e[(oa|4)>>2]|0;_=(fa&65535)+((_&65535)<<1)|0;ba=((fa>>>16)+((ba&65535)<<1)|0)+(_>>>16)|0;e[(oa|4)>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[(oa|8)>>2]|0;_=((fa&65535)+((ea&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(ea>>>16<<1)|0)+(_>>>16)|0;e[(oa|8)>>2]=ba<<16|_&65535;ca=ba>>>16;if(ca){fa=e[(oa|12)>>2]|0;_=(fa&65535)+ca|0;ba=(fa>>>16)+(_>>>16)|0;e[(oa|12)>>2]=ba<<16|_&65535}}for(ia=0;(ia|0)<(b|0);ia=ia+16|0){ma=a+ia|0,oa=c+(ia<<1)|0;n=e[ma>>2]|0,d=n&65535,n=n>>>16,o=e[(ma|4)>>2]|0,g=o&65535,o=o>>>16;D=e[(ma|8)>>2]|0,v=D&65535,D=D>>>16,E=e[(ma|12)>>2]|0,w=E&65535,E=E>>>16;_=f(d,v)|0;aa=f(n,v)|0;ba=((f(d,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;L=ba<<16|_&65535;_=(f(d,w)|0)+(ea&65535)|0;aa=(f(n,w)|0)+(ea>>>16)|0;ba=((f(d,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;M=ba<<16|_&65535;N=ea;_=(f(g,v)|0)+(M&65535)|0;aa=(f(o,v)|0)+(M>>>16)|0;ba=((f(g,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;M=ba<<16|_&65535;_=((f(g,w)|0)+(N&65535)|0)+(ea&65535)|0;aa=((f(o,w)|0)+(N>>>16)|0)+(ea>>>16)|0;ba=((f(g,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;N=ba<<16|_&65535;O=ea;fa=e[(oa|8)>>2]|0;_=(fa&65535)+((L&65535)<<1)|0;ba=((fa>>>16)+(L>>>16<<1)|0)+(_>>>16)|0;e[(oa|8)>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[(oa|12)>>2]|0;_=((fa&65535)+((M&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(M>>>16<<1)|0)+(_>>>16)|0;e[(oa|12)>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[(oa|16)>>2]|0;_=((fa&65535)+((N&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(N>>>16<<1)|0)+(_>>>16)|0;e[(oa|16)>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[(oa|20)>>2]|0;_=((fa&65535)+((O&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(O>>>16<<1)|0)+(_>>>16)|0;e[(oa|20)>>2]=ba<<16|_&65535;ca=ba>>>16;for(la=24;!!ca&(la|0)<32;la=la+4|0){fa=e[(oa|la)>>2]|0;_=(fa&65535)+ca|0;ba=(fa>>>16)+(_>>>16)|0;e[(oa|la)>>2]=ba<<16|_&65535;ca=ba>>>16}}for(ia=0;(ia|0)<(b|0);ia=ia+32|0){ma=a+ia|0,oa=c+(ia<<1)|0;n=e[ma>>2]|0,d=n&65535,n=n>>>16,o=e[(ma|4)>>2]|0,g=o&65535,o=o>>>16,p=e[(ma|8)>>2]|0,h=p&65535,p=p>>>16,q=e[(ma|12)>>2]|0,i=q&65535,q=q>>>16;D=e[(ma|16)>>2]|0,v=D&65535,D=D>>>16,E=e[(ma|20)>>2]|0,w=E&65535,E=E>>>16,F=e[(ma|24)>>2]|0,x=F&65535,F=F>>>16,G=e[(ma|28)>>2]|0,y=G&65535,G=G>>>16;_=f(d,v)|0;aa=f(n,v)|0;ba=((f(d,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;L=ba<<16|_&65535;_=(f(d,w)|0)+(ea&65535)|0;aa=(f(n,w)|0)+(ea>>>16)|0;ba=((f(d,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;M=ba<<16|_&65535;_=(f(d,x)|0)+(ea&65535)|0;aa=(f(n,x)|0)+(ea>>>16)|0;ba=((f(d,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;N=ba<<16|_&65535;_=(f(d,y)|0)+(ea&65535)|0;aa=(f(n,y)|0)+(ea>>>16)|0;ba=((f(d,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;O=ba<<16|_&65535;P=ea;_=(f(g,v)|0)+(M&65535)|0;aa=(f(o,v)|0)+(M>>>16)|0;ba=((f(g,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;M=ba<<16|_&65535;_=((f(g,w)|0)+(N&65535)|0)+(ea&65535)|0;aa=((f(o,w)|0)+(N>>>16)|0)+(ea>>>16)|0;ba=((f(g,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;N=ba<<16|_&65535;_=((f(g,x)|0)+(O&65535)|0)+(ea&65535)|0;aa=((f(o,x)|0)+(O>>>16)|0)+(ea>>>16)|0;ba=((f(g,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;O=ba<<16|_&65535;_=((f(g,y)|0)+(P&65535)|0)+(ea&65535)|0;aa=((f(o,y)|0)+(P>>>16)|0)+(ea>>>16)|0;ba=((f(g,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;P=ba<<16|_&65535;Q=ea;_=(f(h,v)|0)+(N&65535)|0;aa=(f(p,v)|0)+(N>>>16)|0;ba=((f(h,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;N=ba<<16|_&65535;_=((f(h,w)|0)+(O&65535)|0)+(ea&65535)|0;aa=((f(p,w)|0)+(O>>>16)|0)+(ea>>>16)|0;ba=((f(h,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;O=ba<<16|_&65535;_=((f(h,x)|0)+(P&65535)|0)+(ea&65535)|0;aa=((f(p,x)|0)+(P>>>16)|0)+(ea>>>16)|0;ba=((f(h,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;P=ba<<16|_&65535;_=((f(h,y)|0)+(Q&65535)|0)+(ea&65535)|0;aa=((f(p,y)|0)+(Q>>>16)|0)+(ea>>>16)|0;ba=((f(h,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;Q=ba<<16|_&65535;R=ea;_=(f(i,v)|0)+(O&65535)|0;aa=(f(q,v)|0)+(O>>>16)|0;ba=((f(i,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;O=ba<<16|_&65535;_=((f(i,w)|0)+(P&65535)|0)+(ea&65535)|0;aa=((f(q,w)|0)+(P>>>16)|0)+(ea>>>16)|0;ba=((f(i,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;P=ba<<16|_&65535;_=((f(i,x)|0)+(Q&65535)|0)+(ea&65535)|0;aa=((f(q,x)|0)+(Q>>>16)|0)+(ea>>>16)|0;ba=((f(i,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;Q=ba<<16|_&65535;_=((f(i,y)|0)+(R&65535)|0)+(ea&65535)|0;aa=((f(q,y)|0)+(R>>>16)|0)+(ea>>>16)|0;ba=((f(i,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;R=ba<<16|_&65535;S=ea;fa=e[(oa|16)>>2]|0;_=(fa&65535)+((L&65535)<<1)|0;ba=((fa>>>16)+(L>>>16<<1)|0)+(_>>>16)|0;e[(oa|16)>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[(oa|20)>>2]|0;_=((fa&65535)+((M&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(M>>>16<<1)|0)+(_>>>16)|0;e[(oa|20)>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[(oa|24)>>2]|0;_=((fa&65535)+((N&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(N>>>16<<1)|0)+(_>>>16)|0;e[(oa|24)>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[(oa|28)>>2]|0;_=((fa&65535)+((O&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(O>>>16<<1)|0)+(_>>>16)|0;e[(oa|28)>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[oa+32>>2]|0;_=((fa&65535)+((P&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(P>>>16<<1)|0)+(_>>>16)|0;e[oa+32>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[oa+36>>2]|0;_=((fa&65535)+((Q&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(Q>>>16<<1)|0)+(_>>>16)|0;e[oa+36>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[oa+40>>2]|0;_=((fa&65535)+((R&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(R>>>16<<1)|0)+(_>>>16)|0;e[oa+40>>2]=ba<<16|_&65535;ca=ba>>>16;fa=e[oa+44>>2]|0;_=((fa&65535)+((S&65535)<<1)|0)+ca|0;ba=((fa>>>16)+(S>>>16<<1)|0)+(_>>>16)|0;e[oa+44>>2]=ba<<16|_&65535;ca=ba>>>16;for(la=48;!!ca&(la|0)<64;la=la+4|0){fa=e[oa+la>>2]|0;_=(fa&65535)+ca|0;ba=(fa>>>16)+(_>>>16)|0;e[oa+la>>2]=ba<<16|_&65535;ca=ba>>>16}}for(ga=32;(ga|0)<(b|0);ga=ga<<1){ha=ga<<1;for(ia=0;(ia|0)<(b|0);ia=ia+ha|0){oa=c+(ia<<1)|0;da=0;for(ja=0;(ja|0)<(ga|0);ja=ja+32|0){ma=(a+ia|0)+ja|0;n=e[ma>>2]|0,d=n&65535,n=n>>>16,o=e[(ma|4)>>2]|0,g=o&65535,o=o>>>16,p=e[(ma|8)>>2]|0,h=p&65535,p=p>>>16,q=e[(ma|12)>>2]|0,i=q&65535,q=q>>>16,r=e[(ma|16)>>2]|0,j=r&65535,r=r>>>16,s=e[(ma|20)>>2]|0,k=s&65535,s=s>>>16,t=e[(ma|24)>>2]|0,l=t&65535,t=t>>>16,u=e[(ma|28)>>2]|0,m=u&65535,u=u>>>16;T=U=V=W=X=Y=Z=$=ca=0;for(ka=0;(ka|0)<(ga|0);ka=ka+32|0){na=((a+ia|0)+ga|0)+ka|0;D=e[na>>2]|0,v=D&65535,D=D>>>16,E=e[(na|4)>>2]|0,w=E&65535,E=E>>>16,F=e[(na|8)>>2]|0,x=F&65535,F=F>>>16,G=e[(na|12)>>2]|0,y=G&65535,G=G>>>16,H=e[(na|16)>>2]|0,z=H&65535,H=H>>>16,I=e[(na|20)>>2]|0,A=I&65535,I=I>>>16,J=e[(na|24)>>2]|0,B=J&65535,J=J>>>16,K=e[(na|28)>>2]|0,C=K&65535,K=K>>>16;L=M=N=O=P=Q=R=S=0;_=((f(d,v)|0)+(L&65535)|0)+(T&65535)|0;aa=((f(n,v)|0)+(L>>>16)|0)+(T>>>16)|0;ba=((f(d,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;L=ba<<16|_&65535;_=((f(d,w)|0)+(M&65535)|0)+(ea&65535)|0;aa=((f(n,w)|0)+(M>>>16)|0)+(ea>>>16)|0;ba=((f(d,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;M=ba<<16|_&65535;_=((f(d,x)|0)+(N&65535)|0)+(ea&65535)|0;aa=((f(n,x)|0)+(N>>>16)|0)+(ea>>>16)|0;ba=((f(d,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;N=ba<<16|_&65535;_=((f(d,y)|0)+(O&65535)|0)+(ea&65535)|0;aa=((f(n,y)|0)+(O>>>16)|0)+(ea>>>16)|0;ba=((f(d,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;O=ba<<16|_&65535;_=((f(d,z)|0)+(P&65535)|0)+(ea&65535)|0;aa=((f(n,z)|0)+(P>>>16)|0)+(ea>>>16)|0;ba=((f(d,H)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,H)|0)+(aa>>>16)|0)+(ba>>>16)|0;P=ba<<16|_&65535;_=((f(d,A)|0)+(Q&65535)|0)+(ea&65535)|0;aa=((f(n,A)|0)+(Q>>>16)|0)+(ea>>>16)|0;ba=((f(d,I)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,I)|0)+(aa>>>16)|0)+(ba>>>16)|0;Q=ba<<16|_&65535;_=((f(d,B)|0)+(R&65535)|0)+(ea&65535)|0;aa=((f(n,B)|0)+(R>>>16)|0)+(ea>>>16)|0;ba=((f(d,J)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,J)|0)+(aa>>>16)|0)+(ba>>>16)|0;R=ba<<16|_&65535;_=((f(d,C)|0)+(S&65535)|0)+(ea&65535)|0;aa=((f(n,C)|0)+(S>>>16)|0)+(ea>>>16)|0;ba=((f(d,K)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(n,K)|0)+(aa>>>16)|0)+(ba>>>16)|0;S=ba<<16|_&65535;T=ea;_=((f(g,v)|0)+(M&65535)|0)+(U&65535)|0;aa=((f(o,v)|0)+(M>>>16)|0)+(U>>>16)|0;ba=((f(g,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;M=ba<<16|_&65535;_=((f(g,w)|0)+(N&65535)|0)+(ea&65535)|0;aa=((f(o,w)|0)+(N>>>16)|0)+(ea>>>16)|0;ba=((f(g,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;N=ba<<16|_&65535;_=((f(g,x)|0)+(O&65535)|0)+(ea&65535)|0;aa=((f(o,x)|0)+(O>>>16)|0)+(ea>>>16)|0;ba=((f(g,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;O=ba<<16|_&65535;_=((f(g,y)|0)+(P&65535)|0)+(ea&65535)|0;aa=((f(o,y)|0)+(P>>>16)|0)+(ea>>>16)|0;ba=((f(g,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;P=ba<<16|_&65535;_=((f(g,z)|0)+(Q&65535)|0)+(ea&65535)|0;aa=((f(o,z)|0)+(Q>>>16)|0)+(ea>>>16)|0;ba=((f(g,H)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,H)|0)+(aa>>>16)|0)+(ba>>>16)|0;Q=ba<<16|_&65535;_=((f(g,A)|0)+(R&65535)|0)+(ea&65535)|0;aa=((f(o,A)|0)+(R>>>16)|0)+(ea>>>16)|0;ba=((f(g,I)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,I)|0)+(aa>>>16)|0)+(ba>>>16)|0;R=ba<<16|_&65535;_=((f(g,B)|0)+(S&65535)|0)+(ea&65535)|0;aa=((f(o,B)|0)+(S>>>16)|0)+(ea>>>16)|0;ba=((f(g,J)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,J)|0)+(aa>>>16)|0)+(ba>>>16)|0;S=ba<<16|_&65535;_=((f(g,C)|0)+(T&65535)|0)+(ea&65535)|0;aa=((f(o,C)|0)+(T>>>16)|0)+(ea>>>16)|0;ba=((f(g,K)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(o,K)|0)+(aa>>>16)|0)+(ba>>>16)|0;T=ba<<16|_&65535;U=ea;_=((f(h,v)|0)+(N&65535)|0)+(V&65535)|0;aa=((f(p,v)|0)+(N>>>16)|0)+(V>>>16)|0;ba=((f(h,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;N=ba<<16|_&65535;_=((f(h,w)|0)+(O&65535)|0)+(ea&65535)|0;aa=((f(p,w)|0)+(O>>>16)|0)+(ea>>>16)|0;ba=((f(h,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;O=ba<<16|_&65535;_=((f(h,x)|0)+(P&65535)|0)+(ea&65535)|0;aa=((f(p,x)|0)+(P>>>16)|0)+(ea>>>16)|0;ba=((f(h,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;P=ba<<16|_&65535;_=((f(h,y)|0)+(Q&65535)|0)+(ea&65535)|0;aa=((f(p,y)|0)+(Q>>>16)|0)+(ea>>>16)|0;ba=((f(h,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;Q=ba<<16|_&65535;_=((f(h,z)|0)+(R&65535)|0)+(ea&65535)|0;aa=((f(p,z)|0)+(R>>>16)|0)+(ea>>>16)|0;ba=((f(h,H)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,H)|0)+(aa>>>16)|0)+(ba>>>16)|0;R=ba<<16|_&65535;_=((f(h,A)|0)+(S&65535)|0)+(ea&65535)|0;aa=((f(p,A)|0)+(S>>>16)|0)+(ea>>>16)|0;ba=((f(h,I)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,I)|0)+(aa>>>16)|0)+(ba>>>16)|0;S=ba<<16|_&65535;_=((f(h,B)|0)+(T&65535)|0)+(ea&65535)|0;aa=((f(p,B)|0)+(T>>>16)|0)+(ea>>>16)|0;ba=((f(h,J)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,J)|0)+(aa>>>16)|0)+(ba>>>16)|0;T=ba<<16|_&65535;_=((f(h,C)|0)+(U&65535)|0)+(ea&65535)|0;aa=((f(p,C)|0)+(U>>>16)|0)+(ea>>>16)|0;ba=((f(h,K)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(p,K)|0)+(aa>>>16)|0)+(ba>>>16)|0;U=ba<<16|_&65535;V=ea;_=((f(i,v)|0)+(O&65535)|0)+(W&65535)|0;aa=((f(q,v)|0)+(O>>>16)|0)+(W>>>16)|0;ba=((f(i,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;O=ba<<16|_&65535;_=((f(i,w)|0)+(P&65535)|0)+(ea&65535)|0;aa=((f(q,w)|0)+(P>>>16)|0)+(ea>>>16)|0;ba=((f(i,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;P=ba<<16|_&65535;_=((f(i,x)|0)+(Q&65535)|0)+(ea&65535)|0;aa=((f(q,x)|0)+(Q>>>16)|0)+(ea>>>16)|0;ba=((f(i,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;Q=ba<<16|_&65535;_=((f(i,y)|0)+(R&65535)|0)+(ea&65535)|0;aa=((f(q,y)|0)+(R>>>16)|0)+(ea>>>16)|0;ba=((f(i,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;R=ba<<16|_&65535;_=((f(i,z)|0)+(S&65535)|0)+(ea&65535)|0;aa=((f(q,z)|0)+(S>>>16)|0)+(ea>>>16)|0;ba=((f(i,H)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,H)|0)+(aa>>>16)|0)+(ba>>>16)|0;S=ba<<16|_&65535;_=((f(i,A)|0)+(T&65535)|0)+(ea&65535)|0;aa=((f(q,A)|0)+(T>>>16)|0)+(ea>>>16)|0;ba=((f(i,I)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,I)|0)+(aa>>>16)|0)+(ba>>>16)|0;T=ba<<16|_&65535;_=((f(i,B)|0)+(U&65535)|0)+(ea&65535)|0;aa=((f(q,B)|0)+(U>>>16)|0)+(ea>>>16)|0;ba=((f(i,J)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,J)|0)+(aa>>>16)|0)+(ba>>>16)|0;U=ba<<16|_&65535;_=((f(i,C)|0)+(V&65535)|0)+(ea&65535)|0;aa=((f(q,C)|0)+(V>>>16)|0)+(ea>>>16)|0;ba=((f(i,K)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(q,K)|0)+(aa>>>16)|0)+(ba>>>16)|0;V=ba<<16|_&65535;W=ea;_=((f(j,v)|0)+(P&65535)|0)+(X&65535)|0;aa=((f(r,v)|0)+(P>>>16)|0)+(X>>>16)|0;ba=((f(j,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(r,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;P=ba<<16|_&65535;_=((f(j,w)|0)+(Q&65535)|0)+(ea&65535)|0;aa=((f(r,w)|0)+(Q>>>16)|0)+(ea>>>16)|0;ba=((f(j,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(r,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;Q=ba<<16|_&65535;_=((f(j,x)|0)+(R&65535)|0)+(ea&65535)|0;aa=((f(r,x)|0)+(R>>>16)|0)+(ea>>>16)|0;ba=((f(j,F)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(r,F)|0)+(aa>>>16)|0)+(ba>>>16)|0;R=ba<<16|_&65535;_=((f(j,y)|0)+(S&65535)|0)+(ea&65535)|0;aa=((f(r,y)|0)+(S>>>16)|0)+(ea>>>16)|0;ba=((f(j,G)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(r,G)|0)+(aa>>>16)|0)+(ba>>>16)|0;S=ba<<16|_&65535;_=((f(j,z)|0)+(T&65535)|0)+(ea&65535)|0;aa=((f(r,z)|0)+(T>>>16)|0)+(ea>>>16)|0;ba=((f(j,H)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(r,H)|0)+(aa>>>16)|0)+(ba>>>16)|0;T=ba<<16|_&65535;_=((f(j,A)|0)+(U&65535)|0)+(ea&65535)|0;aa=((f(r,A)|0)+(U>>>16)|0)+(ea>>>16)|0;ba=((f(j,I)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(r,I)|0)+(aa>>>16)|0)+(ba>>>16)|0;U=ba<<16|_&65535;_=((f(j,B)|0)+(V&65535)|0)+(ea&65535)|0;aa=((f(r,B)|0)+(V>>>16)|0)+(ea>>>16)|0;ba=((f(j,J)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(r,J)|0)+(aa>>>16)|0)+(ba>>>16)|0;V=ba<<16|_&65535;_=((f(j,C)|0)+(W&65535)|0)+(ea&65535)|0;aa=((f(r,C)|0)+(W>>>16)|0)+(ea>>>16)|0;ba=((f(j,K)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(r,K)|0)+(aa>>>16)|0)+(ba>>>16)|0;W=ba<<16|_&65535;X=ea;_=((f(k,v)|0)+(Q&65535)|0)+(Y&65535)|0;aa=((f(s,v)|0)+(Q>>>16)|0)+(Y>>>16)|0;ba=((f(k,D)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(s,D)|0)+(aa>>>16)|0)+(ba>>>16)|0;Q=ba<<16|_&65535;_=((f(k,w)|0)+(R&65535)|0)+(ea&65535)|0;aa=((f(s,w)|0)+(R>>>16)|0)+(ea>>>16)|0;ba=((f(k,E)|0)+(aa&65535)|0)+(_>>>16)|0;ea=((f(s,E)|0)+(aa>>>16)|0)+(ba>>>16)|0;R=ba<<16|_&65535;_=((f(k,x)|0)+(S&65535)|0)+(ea&65535)|0;aa=((f(s,x)|0)+(S>>>16)|0)+(ea>>>16)|0;ba=((f(k,F)|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s(a,b,c,d,g){a=a|0;b=b|0;c=c|0;d=d|0;g=g|0;var 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ob(b[3]),d[4]=new ob(b[4]),d[5]=new _a(b[5]),d[6]=new _a(b[6]),d[7]=new _a(b[7])),this.key=d}return this}function zb(a){if(!this.key)throw new c("no key is associated with the instance");n(a)&&(a=f(a)),o(a)&&(a=new Uint8Array(a));var b;if(p(a))b=new _a(a);else{if(!$a(a))throw new TypeError("unexpected data type");b=a}if(this.key[0].compare(b)<=0)throw new RangeError("data too large");var d=this.key[0],e=this.key[1],g=d.power(b,e).toBytes(),h=d.bitLength+7>>3;if(g.length<h){var i=new Uint8Array(h);i.set(g,h-g.length),g=i}return this.result=g,this}function Ab(a){if(!this.key)throw new c("no key is associated with the instance");if(this.key.length<3)throw new c("key isn't suitable for decription");n(a)&&(a=f(a)),o(a)&&(a=new Uint8Array(a));var b;if(p(a))b=new _a(a);else{if(!$a(a))throw new TypeError("unexpected data type");b=a}if(this.key[0].compare(b)<=0)throw new RangeError("data too large");var d;if(this.key.length>3){for(var e=this.key[0],g=this.key[3],h=this.key[4],i=this.key[5],j=this.key[6],k=this.key[7],l=g.power(b,i),m=h.power(b,j),q=l.subtract(m);q.sign<0;)q=q.add(g);var r=g.reduce(k.multiply(q));d=r.multiply(h).add(m).clamp(e.bitLength).toBytes()}else{var e=this.key[0],s=this.key[2];d=e.power(b,s).toBytes()}var t=e.bitLength+7>>3;if(d.length<t){var u=new Uint8Array(t);u.set(d,t-d.length),d=u}return this.result=d,this}function Bb(a,b){if(a=a||2048,b=b||65537,512>a)throw new d("bit length is too small");if(n(b)&&(b=f(b)),o(b)&&(b=new Uint8Array(b)),!(p(b)||m(b)||$a(b)))throw new TypeError("unexpected exponent type");if(b=new _a(b),0===(1&b.limbs[0]))throw new d("exponent must be an odd number");var c,b,e,g,h,i,j,k,l,q;g=wb(a>>1,function(a){return i=new _a(a),i.limbs[0]-=1,1==nb(i,b).gcd.valueOf()}),h=wb(a-(a>>1),function(d){return c=new ob(g.multiply(d)),c.limbs[(a+31>>5)-1]>>>(a-1&31)?(j=new _a(d),j.limbs[0]-=1,1==nb(j,b).gcd.valueOf()):!1}),e=new ob(i.multiply(j)).inverse(b),k=e.divide(i).remainder,l=e.divide(j).remainder,g=new ob(g),h=new ob(h);var q=g.inverse(h);return[c,b,e,g,h,k,l,q]}function Cb(a){if(a=a||{},!a.hash)throw new SyntaxError("option 'hash' is required");if(!a.hash.HASH_SIZE)throw new SyntaxError("option 'hash' supplied doesn't seem to be a valid hash function");this.hash=a.hash,this.label=null,this.reset(a)}function Db(a){a=a||{};var b=a.label;if(void 0!==b){if(o(b)||p(b))b=new Uint8Array(b);else{if(!n(b))throw new TypeError("unexpected label type");b=f(b)}this.label=b.length>0?b:null}else this.label=null;yb.call(this,a)}function Eb(a){if(!this.key)throw new c("no key is associated with the instance");var b=Math.ceil(this.key[0].bitLength/8),e=this.hash.HASH_SIZE,g=a.byteLength||a.length||0,h=b-g-2*e-2;if(g>b-2*this.hash.HASH_SIZE-2)throw new d("data too large");var i=new Uint8Array(b),j=i.subarray(1,e+1),k=i.subarray(e+1);if(p(a))k.set(a,e+h+1);else if(o(a))k.set(new Uint8Array(a),e+h+1);else{if(!n(a))throw new TypeError("unexpected data type");k.set(f(a),e+h+1)}k.set(this.hash.reset().process(this.label||"").finish().result,0),k[e+h]=1,Wa(j);for(var l=Gb.call(this,j,k.length),m=0;m<k.length;m++)k[m]^=l[m];for(var q=Gb.call(this,k,j.length),m=0;m<j.length;m++)j[m]^=q[m];return zb.call(this,i),this}function Fb(a){if(!this.key)throw new c("no key is associated with the instance");var b=Math.ceil(this.key[0].bitLength/8),f=this.hash.HASH_SIZE,g=a.byteLength||a.length||0;if(g!==b)throw new d("bad data");Ab.call(this,a);var h=this.result[0],i=this.result.subarray(1,f+1),j=this.result.subarray(f+1);if(0!==h)throw new e("decryption failed");for(var k=Gb.call(this,j,i.length),l=0;l<i.length;l++)i[l]^=k[l];for(var m=Gb.call(this,i,j.length),l=0;l<j.length;l++)j[l]^=m[l];for(var n=this.hash.reset().process(this.label||"").finish().result,l=0;f>l;l++)if(n[l]!==j[l])throw new e("decryption failed");for(var o=f;o<j.length;o++){var p=j[o];if(1===p)break;if(0!==p)throw new e("decryption failed")}if(o===j.length)throw new e("decryption failed");return this.result=j.subarray(o+1),this}function Gb(a,b){a=a||"",b=b||0;for(var c=this.hash.HASH_SIZE,d=new Uint8Array(b),e=new Uint8Array(4),f=Math.ceil(b/c),g=0;f>g;g++){e[0]=g>>>24,e[1]=g>>>16&255,e[2]=g>>>8&255,e[3]=255&g;var h=d.subarray(g*c),i=this.hash.reset().process(a).process(e).finish().result;i.length>h.length&&(i=i.subarray(0,h.length)),h.set(i)}return d}function Hb(a){if(a=a||{},!a.hash)throw new SyntaxError("option 'hash' is required");if(!a.hash.HASH_SIZE)throw new SyntaxError("option 'hash' supplied doesn't seem to be a valid hash function");this.hash=a.hash,this.saltLength=4,this.reset(a)}function Ib(a){a=a||{},yb.call(this,a);var b=a.saltLength;if(void 0!==b){if(!m(b)||0>b)throw new TypeError("saltLength should be a non-negative number");if(null!==this.key&&Math.ceil((this.key[0].bitLength-1)/8)<this.hash.HASH_SIZE+b+2)throw new SyntaxError("saltLength is too large");this.saltLength=b}else 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e=0,f=0,g=0,l=0,m=0,n=0,o=0,p=0,q=0,r=0;a=a^h,b=b^i,c=c^j,d=d^k;e=t|0,f=u|0,g=v|0,l=w|0;for(;(q|0)<128;q=q+1|0){if(e>>>31){m=m^a,n=n^b,o=o^c,p=p^d}e=e<<1|f>>>31,f=f<<1|g>>>31,g=g<<1|l>>>31,l=l<<1;r=d&1;d=d>>>1|c<<31,c=c>>>1|b<<31,b=b>>>1|a<<31,a=a>>>1;if(r)a=a^3774873600}h=m,i=n,j=o,k=p}function K(a){a=a|0;x=a}function L(a,b,c,h){a=a|0;b=b|0;c=c|0;h=h|0;d=a,e=b,f=c,g=h}function M(a,b,c,d){a=a|0;b=b|0;c=c|0;d=d|0;h=a,i=b,j=c,k=d}function N(a,b,c,d){a=a|0;b=b|0;c=c|0;d=d|0;l=a,m=b,n=c,o=d}function O(a,b,c,d){a=a|0;b=b|0;c=c|0;d=d|0;p=a,q=b,r=c,s=d}function P(a,b,c,d){a=a|0;b=b|0;c=c|0;d=d|0;o=~s&o|s&d,n=~r&n|r&c,m=~q&m|q&b,l=~p&l|p&a}function Q(a){a=a|0;if(a&15)return-1;z[a|0]=d>>>24,z[a|1]=d>>>16&255,z[a|2]=d>>>8&255,z[a|3]=d&255,z[a|4]=e>>>24,z[a|5]=e>>>16&255,z[a|6]=e>>>8&255,z[a|7]=e&255,z[a|8]=f>>>24,z[a|9]=f>>>16&255,z[a|10]=f>>>8&255,z[a|11]=f&255,z[a|12]=g>>>24,z[a|13]=g>>>16&255,z[a|14]=g>>>8&255,z[a|15]=g&255;return 16}function R(a){a=a|0;if(a&15)return-1;z[a|0]=h>>>24,z[a|1]=h>>>16&255,z[a|2]=h>>>8&255,z[a|3]=h&255,z[a|4]=i>>>24,z[a|5]=i>>>16&255,z[a|6]=i>>>8&255,z[a|7]=i&255,z[a|8]=j>>>24,z[a|9]=j>>>16&255,z[a|10]=j>>>8&255,z[a|11]=j&255,z[a|12]=k>>>24,z[a|13]=k>>>16&255,z[a|14]=k>>>8&255,z[a|15]=k&255;return 16}function S(){B(0,0,0,0);t=d,u=e,v=f,w=g}function T(a,b,c){a=a|0;b=b|0;c=c|0;var h=0;if(b&15)return-1;while((c|0)>=16){V[a&7](z[b|0]<<24|z[b|1]<<16|z[b|2]<<8|z[b|3],z[b|4]<<24|z[b|5]<<16|z[b|6]<<8|z[b|7],z[b|8]<<24|z[b|9]<<16|z[b|10]<<8|z[b|11],z[b|12]<<24|z[b|13]<<16|z[b|14]<<8|z[b|15]);z[b|0]=d>>>24,z[b|1]=d>>>16&255,z[b|2]=d>>>8&255,z[b|3]=d&255,z[b|4]=e>>>24,z[b|5]=e>>>16&255,z[b|6]=e>>>8&255,z[b|7]=e&255,z[b|8]=f>>>24,z[b|9]=f>>>16&255,z[b|10]=f>>>8&255,z[b|11]=f&255,z[b|12]=g>>>24,z[b|13]=g>>>16&255,z[b|14]=g>>>8&255,z[b|15]=g&255;h=h+16|0,b=b+16|0,c=c-16|0}return h|0}function U(a,b,c){a=a|0;b=b|0;c=c|0;var d=0;if(b&15)return-1;while((c|0)>=16){W[a&1](z[b|0]<<24|z[b|1]<<16|z[b|2]<<8|z[b|3],z[b|4]<<24|z[b|5]<<16|z[b|6]<<8|z[b|7],z[b|8]<<24|z[b|9]<<16|z[b|10]<<8|z[b|11],z[b|12]<<24|z[b|13]<<16|z[b|14]<<8|z[b|15]);d=d+16|0,b=b+16|0,c=c-16|0}return d|0}var V=[B,C,D,E,F,G,H,I];var W=[D,J];return{set_rounds:K,set_state:L,set_iv:M,set_nonce:N,set_mask:O,set_counter:P,get_state:Q,get_iv:R,gcm_init:S,cipher:T,mac:U}}(a,b,c);return m.set_key=e,m};return m.ENC={ECB:0,CBC:2,CFB:4,OFB:6,CTR:7},m.DEC={ECB:1,CBC:3,CFB:5,OFB:6,CTR:7},m.MAC={CBC:0,GCM:1},m.HEAP_DATA=16384,m}(),Yb=C.prototype;Yb.BLOCK_SIZE=16,Yb.reset=x,Yb.encrypt=z,Yb.decrypt=B;var Zb=D.prototype;Zb.BLOCK_SIZE=16,Zb.reset=x,Zb.process=y,Zb.finish=z;var $b=E.prototype;$b.BLOCK_SIZE=16,$b.reset=x,$b.process=A,$b.finish=B;var _b=F.prototype;_b.BLOCK_SIZE=16,_b.reset=I,_b.encrypt=z,_b.decrypt=z;var ac=G.prototype;ac.BLOCK_SIZE=16,ac.reset=I,ac.process=y,ac.finish=z;var bc=68719476704,cc=K.prototype;cc.BLOCK_SIZE=16,cc.reset=N,cc.encrypt=Q,cc.decrypt=T;var dc=L.prototype;dc.BLOCK_SIZE=16,dc.reset=N,dc.process=O,dc.finish=P;var ec=M.prototype;ec.BLOCK_SIZE=16,ec.reset=N,ec.process=R,ec.finish=S;var fc=new Uint8Array(1048576),gc=Xb(b,null,fc.buffer);a.AES_CBC=C,a.AES_CBC.encrypt=U,a.AES_CBC.decrypt=V,a.AES_CBC.Encrypt=D,a.AES_CBC.Decrypt=E,a.AES_GCM=K,a.AES_GCM.encrypt=W,a.AES_GCM.decrypt=X,a.AES_GCM.Encrypt=L,a.AES_GCM.Decrypt=M;var hc=64,ic=20;aa.BLOCK_SIZE=hc,aa.HASH_SIZE=ic;var jc=aa.prototype;jc.reset=Y,jc.process=Z,jc.finish=$;var kc=null;aa.bytes=ca,aa.hex=da,aa.base64=ea,a.SHA1=aa;var lc=64,mc=32;ga.BLOCK_SIZE=lc,ga.HASH_SIZE=mc;var nc=ga.prototype;nc.reset=Y,nc.process=Z,nc.finish=$;var oc=null;ga.bytes=ia,ga.hex=ja,ga.base64=ka,a.SHA256=ga;var pc=la.prototype;pc.reset=oa,pc.process=pa,pc.finish=qa,ra.BLOCK_SIZE=aa.BLOCK_SIZE,ra.HMAC_SIZE=aa.HASH_SIZE;var qc=ra.prototype;qc.reset=sa,qc.process=pa,qc.finish=ta;var rc=null;va.BLOCK_SIZE=ga.BLOCK_SIZE,va.HMAC_SIZE=ga.HASH_SIZE;var sc=va.prototype;sc.reset=wa,sc.process=pa,sc.finish=xa;var tc=null;a.HMAC=la,ra.bytes=za,ra.hex=Aa,ra.base64=Ba,a.HMAC_SHA1=ra,va.bytes=Ca,va.hex=Da,va.base64=Ea,a.HMAC_SHA256=va;var uc=Fa.prototype;uc.reset=Ga,uc.generate=Ha;var vc=Ia.prototype;vc.reset=Ga,vc.generate=Ja;var wc=null,xc=La.prototype;xc.reset=Ga,xc.generate=Ma;var yc=null;a.PBKDF2=a.PBKDF2_HMAC_SHA1={bytes:Oa,hex:Pa,base64:Qa},a.PBKDF2_HMAC_SHA256={bytes:Ra,hex:Sa,base64:Ta};var zc,Ac=function(){function a(){function a(){b^=d<<11,l=l+b|0,d=d+f|0,d^=f>>>2,m=m+d|0,f=f+l|0,f^=l<<8,n=n+f|0,l=l+m|0,l^=m>>>16,o=o+l|0,m=m+n|0,m^=n<<10,p=p+m|0,n=n+o|0,n^=o>>>4,b=b+n|0,o=o+p|0,o^=p<<8,d=d+o|0,p=p+b|0,p^=b>>>9,f=f+p|0,b=b+d|0}var b,d,f,l,m,n,o,p;h=i=j=0,b=d=f=l=m=n=o=p=2654435769;for(var q=0;4>q;q++)a();for(var q=0;256>q;q+=8)b=b+g[0|q]|0,d=d+g[1|q]|0,f=f+g[2|q]|0,l=l+g[3|q]|0,m=m+g[4|q]|0,n=n+g[5|q]|0,o=o+g[6|q]|0,p=p+g[7|q]|0,a(),e.set([b,d,f,l,m,n,o,p],q);for(var q=0;256>q;q+=8)b=b+e[0|q]|0,d=d+e[1|q]|0,f=f+e[2|q]|0,l=l+e[3|q]|0,m=m+e[4|q]|0,n=n+e[5|q]|0,o=o+e[6|q]|0,p=p+e[7|q]|0,a(),e.set([b,d,f,l,m,n,o,p],q);c(1),k=256}function b(b){var c,d,e,h,i;if(q(b))b=new Uint8Array(b.buffer);else if(m(b))h=new Ub(1),h[0]=b,b=new Uint8Array(h.buffer);else if(n(b))b=f(b);else{if(!o(b))throw new TypeError("bad seed type");b=new Uint8Array(b)}for(i=b.length,d=0;i>d;d+=1024){for(e=d,c=0;1024>c&&i>e;e=d|++c)g[c>>2]^=b[e]<<((3&c)<<3);a()}}function c(a){a=a||1;for(var b,c,d;a--;)for(j=j+1|0,i=i+j|0,b=0;256>b;b+=4)h^=h<<13,h=e[b+128&255]+h|0,c=e[0|b],e[0|b]=d=e[c>>>2&255]+(h+i|0)|0,g[0|b]=i=e[d>>>10&255]+c|0,h^=h>>>6,h=e[b+129&255]+h|0,c=e[1|b],e[1|b]=d=e[c>>>2&255]+(h+i|0)|0,g[1|b]=i=e[d>>>10&255]+c|0,h^=h<<2,h=e[b+130&255]+h|0,c=e[2|b],e[2|b]=d=e[c>>>2&255]+(h+i|0)|0,g[2|b]=i=e[d>>>10&255]+c|0,h^=h>>>16,h=e[b+131&255]+h|0,c=e[3|b],e[3|b]=d=e[c>>>2&255]+(h+i|0)|0,g[3|b]=i=e[d>>>10&255]+c|0}function d(){return k--||(c(1),k=255),g[k]}var e=new Uint32Array(256),g=new Uint32Array(256),h=0,i=0,j=0,k=0;return{seed:b,prng:c,rand:d}}(),Vb=b.console,Bc=b.Date.now,Cc=b.Math.random,Dc=b.performance,Ec=b.crypto||b.msCrypto;void 0!==Ec&&(zc=Ec.getRandomValues);var Fc,Gc=Ac.rand,Hc=Ac.seed,Ic=0,Jc=!1,Kc=!1,Lc=0,Mc=256,Nc=!1,Oc=!1,Pc={};if(void 0!==Dc)Fc=function(){return 1e3*Dc.now()|0};else{var Qc=1e3*Bc()|0;Fc=function(){return 1e3*Bc()-Qc|0}}a.random=Xa,a.random.seed=Va,Object.defineProperty(Xa,"allowWeak",{get:function(){return Nc},set:function(a){Nc=a}}),Object.defineProperty(Xa,"skipSystemRNGWarning",{get:function(){return Oc},set:function(a){Oc=a}}),a.getRandomValues=Wa,a.getRandomValues.seed=Va,Object.defineProperty(Wa,"allowWeak",{get:function(){return Nc},set:function(a){Nc=a}}),Object.defineProperty(Wa,"skipSystemRNGWarning",{get:function(){return Oc},set:function(a){Oc=a}}),b.Math.random=Xa,void 0===b.crypto&&(b.crypto={}),b.crypto.getRandomValues=Wa;var Rc;Rc=void 0===b.Math.imul?function(a,c,d){b.Math.imul=Ya;var e=Za(a,c,d);return delete b.Math.imul,e}:Za;var Sc=new Uint32Array(1048576),Za=Rc(b,null,Sc.buffer),Tc=new Uint32Array(0),Uc=_a.prototype=new Number;Uc.toString=ab,Uc.toBytes=bb,Uc.valueOf=cb,Uc.clamp=db,Uc.slice=eb,Uc.negate=fb,Uc.compare=gb,Uc.add=hb,Uc.subtract=ib,Uc.multiply=jb,Uc.square=kb,Uc.divide=lb;var Vc=new _a(0),Wc=new _a(1);Object.freeze(Vc),Object.freeze(Wc);var Xc=ob.prototype=new _a;Xc.reduce=pb,Xc.inverse=qb,Xc.power=rb;var Yc=[2,3];Uc.isProbablePrime=ub,_a.randomProbablePrime=wb,_a.ZERO=Vc,_a.ONE=Wc,_a.extGCD=nb,a.BigNumber=_a,a.Modulus=ob;var Zc=xb.prototype;Zc.reset=yb,Zc.encrypt=zb,Zc.decrypt=Ab,xb.generateKey=Bb;var $c=Cb.prototype;$c.reset=Db,$c.encrypt=Eb,$c.decrypt=Fb;var _c=Hb.prototype;return _c.reset=Ib,_c.sign=Jb,_c.verify=Kb,a.RSA={generateKey:Lb},a.RSA_OAEP=Cb,a.RSA_OAEP_SHA1={encrypt:Mb,decrypt:Nb},a.RSA_OAEP=Cb,a.RSA_OAEP_SHA256={encrypt:Ob,decrypt:Pb},a.RSA_PSS=Hb,a.RSA_PSS_SHA1={sign:Qb,verify:Rb},a.RSA_PSS=Hb,a.RSA_PSS_SHA256={sign:Sb,verify:Tb},"function"==typeof define&&define.amd?define([],function(){return a}):"object"==typeof module&&module.exports?module.exports=a:b.asmCrypto=a,a}({},function(){return this}());
+//# sourceMappingURL=asmcrypto.js.map
\ No newline at end of file
diff --git a/vendors/buffer/index.js b/vendors/buffer/index.js
new file mode 100644
index 0000000..e905459
--- /dev/null
+++ b/vendors/buffer/index.js
@@ -0,0 +1,1773 @@
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.buffer=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+
+;(function (exports) {
+	'use strict';
+
+  var Arr = (typeof Uint8Array !== 'undefined')
+    ? Uint8Array
+    : Array
+
+	var PLUS   = '+'.charCodeAt(0)
+	var SLASH  = '/'.charCodeAt(0)
+	var NUMBER = '0'.charCodeAt(0)
+	var LOWER  = 'a'.charCodeAt(0)
+	var UPPER  = 'A'.charCodeAt(0)
+	var PLUS_URL_SAFE = '-'.charCodeAt(0)
+	var SLASH_URL_SAFE = '_'.charCodeAt(0)
+
+	function decode (elt) {
+		var code = elt.charCodeAt(0)
+		if (code === PLUS ||
+		    code === PLUS_URL_SAFE)
+			return 62 // '+'
+		if (code === SLASH ||
+		    code === SLASH_URL_SAFE)
+			return 63 // '/'
+		if (code < NUMBER)
+			return -1 //no match
+		if (code < NUMBER + 10)
+			return code - NUMBER + 26 + 26
+		if (code < UPPER + 26)
+			return code - UPPER
+		if (code < LOWER + 26)
+			return code - LOWER + 26
+	}
+
+	function b64ToByteArray (b64) {
+		var i, j, l, tmp, placeHolders, arr
+
+		if (b64.length % 4 > 0) {
+			throw new Error('Invalid string. Length must be a multiple of 4')
+		}
+
+		// the number of equal signs (place holders)
+		// if there are two placeholders, than the two characters before it
+		// represent one byte
+		// if there is only one, then the three characters before it represent 2 bytes
+		// this is just a cheap hack to not do indexOf twice
+		var len = b64.length
+		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0
+
+		// base64 is 4/3 + up to two characters of the original data
+		arr = new Arr(b64.length * 3 / 4 - placeHolders)
+
+		// if there are placeholders, only get up to the last complete 4 chars
+		l = placeHolders > 0 ? b64.length - 4 : b64.length
+
+		var L = 0
+
+		function push (v) {
+			arr[L++] = v
+		}
+
+		for (i = 0, j = 0; i < l; i += 4, j += 3) {
+			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
+			push((tmp & 0xFF0000) >> 16)
+			push((tmp & 0xFF00) >> 8)
+			push(tmp & 0xFF)
+		}
+
+		if (placeHolders === 2) {
+			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
+			push(tmp & 0xFF)
+		} else if (placeHolders === 1) {
+			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
+			push((tmp >> 8) & 0xFF)
+			push(tmp & 0xFF)
+		}
+
+		return arr
+	}
+
+	function uint8ToBase64 (uint8) {
+		var i,
+			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
+			output = "",
+			temp, length
+
+		function encode (num) {
+			return lookup.charAt(num)
+		}
+
+		function tripletToBase64 (num) {
+			return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
+		}
+
+		// go through the array every three bytes, we'll deal with trailing stuff later
+		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
+			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+			output += tripletToBase64(temp)
+		}
+
+		// pad the end with zeros, but make sure to not forget the extra bytes
+		switch (extraBytes) {
+			case 1:
+				temp = uint8[uint8.length - 1]
+				output += encode(temp >> 2)
+				output += encode((temp << 4) & 0x3F)
+				output += '=='
+				break
+			case 2:
+				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
+				output += encode(temp >> 10)
+				output += encode((temp >> 4) & 0x3F)
+				output += encode((temp << 2) & 0x3F)
+				output += '='
+				break
+		}
+
+		return output
+	}
+
+	exports.toByteArray = b64ToByteArray
+	exports.fromByteArray = uint8ToBase64
+}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
+
+},{}],2:[function(require,module,exports){
+exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+  var e, m
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var nBits = -7
+  var i = isLE ? (nBytes - 1) : 0
+  var d = isLE ? -1 : 1
+  var s = buffer[offset + i]
+
+  i += d
+
+  e = s & ((1 << (-nBits)) - 1)
+  s >>= (-nBits)
+  nBits += eLen
+  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+  m = e & ((1 << (-nBits)) - 1)
+  e >>= (-nBits)
+  nBits += mLen
+  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+  if (e === 0) {
+    e = 1 - eBias
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity)
+  } else {
+    m = m + Math.pow(2, mLen)
+    e = e - eBias
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+}
+
+exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+  var i = isLE ? 0 : (nBytes - 1)
+  var d = isLE ? 1 : -1
+  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+
+  value = Math.abs(value)
+
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0
+    e = eMax
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2)
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--
+      c *= 2
+    }
+    if (e + eBias >= 1) {
+      value += rt / c
+    } else {
+      value += rt * Math.pow(2, 1 - eBias)
+    }
+    if (value * c >= 2) {
+      e++
+      c /= 2
+    }
+
+    if (e + eBias >= eMax) {
+      m = 0
+      e = eMax
+    } else if (e + eBias >= 1) {
+      m = (value * c - 1) * Math.pow(2, mLen)
+      e = e + eBias
+    } else {
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+      e = 0
+    }
+  }
+
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+
+  e = (e << mLen) | m
+  eLen += mLen
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+
+  buffer[offset + i - d] |= s * 128
+}
+
+},{}],3:[function(require,module,exports){
+var toString = {}.toString;
+
+module.exports = Array.isArray || function (arr) {
+  return toString.call(arr) == '[object Array]';
+};
+
+},{}],"buffer":[function(require,module,exports){
+(function (global){
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
+/* eslint-disable no-proto */
+
+'use strict'
+
+var base64 = require('base64-js')
+var ieee754 = require('ieee754')
+var isArray = require('isarray')
+
+exports.Buffer = Buffer
+exports.SlowBuffer = SlowBuffer
+exports.INSPECT_MAX_BYTES = 50
+Buffer.poolSize = 8192 // not used by this implementation
+
+var rootParent = {}
+
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ *   === true    Use Uint8Array implementation (fastest)
+ *   === false   Use Object implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * Due to various browser bugs, sometimes the Object implementation will be used even
+ * when the browser supports typed arrays.
+ *
+ * Note:
+ *
+ *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
+ *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+ *
+ *   - Safari 5-7 lacks support for changing the `Object.prototype.constructor` property
+ *     on objects.
+ *
+ *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+ *
+ *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+ *     incorrect length in some situations.
+
+ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
+ * get the Object implementation, which is slower but behaves correctly.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
+  ? global.TYPED_ARRAY_SUPPORT
+  : typedArraySupport()
+
+function typedArraySupport () {
+  function Bar () {}
+  try {
+    var arr = new Uint8Array(1)
+    arr.foo = function () { return 42 }
+    arr.constructor = Bar
+    return arr.foo() === 42 && // typed array instances can be augmented
+        arr.constructor === Bar && // constructor can be set
+        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
+  } catch (e) {
+    return false
+  }
+}
+
+function kMaxLength () {
+  return Buffer.TYPED_ARRAY_SUPPORT
+    ? 0x7fffffff
+    : 0x3fffffff
+}
+
+/**
+ * Class: Buffer
+ * =============
+ *
+ * The Buffer constructor returns instances of `Uint8Array` that are augmented
+ * with function properties for all the node `Buffer` API functions. We use
+ * `Uint8Array` so that square bracket notation works as expected -- it returns
+ * a single octet.
+ *
+ * By augmenting the instances, we can avoid modifying the `Uint8Array`
+ * prototype.
+ */
+function Buffer (arg) {
+  if (!(this instanceof Buffer)) {
+    // Avoid going through an ArgumentsAdaptorTrampoline in the common case.
+    if (arguments.length > 1) return new Buffer(arg, arguments[1])
+    return new Buffer(arg)
+  }
+
+  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+    this.length = 0
+    this.parent = undefined
+  }
+
+  // Common case.
+  if (typeof arg === 'number') {
+    return fromNumber(this, arg)
+  }
+
+  // Slightly less common case.
+  if (typeof arg === 'string') {
+    return fromString(this, arg, arguments.length > 1 ? arguments[1] : 'utf8')
+  }
+
+  // Unusual.
+  return fromObject(this, arg)
+}
+
+function fromNumber (that, length) {
+  that = allocate(that, length < 0 ? 0 : checked(length) | 0)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+    for (var i = 0; i < length; i++) {
+      that[i] = 0
+    }
+  }
+  return that
+}
+
+function fromString (that, string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') encoding = 'utf8'
+
+  // Assumption: byteLength() return value is always < kMaxLength.
+  var length = byteLength(string, encoding) | 0
+  that = allocate(that, length)
+
+  that.write(string, encoding)
+  return that
+}
+
+function fromObject (that, object) {
+  if (Buffer.isBuffer(object)) return fromBuffer(that, object)
+
+  if (isArray(object)) return fromArray(that, object)
+
+  if (object == null) {
+    throw new TypeError('must start with number, buffer, array or string')
+  }
+
+  if (typeof ArrayBuffer !== 'undefined') {
+    if (object.buffer instanceof ArrayBuffer) {
+      return fromTypedArray(that, object)
+    }
+    if (object instanceof ArrayBuffer) {
+      return fromArrayBuffer(that, object)
+    }
+  }
+
+  if (object.length) return fromArrayLike(that, object)
+
+  return fromJsonObject(that, object)
+}
+
+function fromBuffer (that, buffer) {
+  var length = checked(buffer.length) | 0
+  that = allocate(that, length)
+  buffer.copy(that, 0, 0, length)
+  return that
+}
+
+function fromArray (that, array) {
+  var length = checked(array.length) | 0
+  that = allocate(that, length)
+  for (var i = 0; i < length; i += 1) {
+    that[i] = array[i] & 255
+  }
+  return that
+}
+
+// Duplicate of fromArray() to keep fromArray() monomorphic.
+function fromTypedArray (that, array) {
+  var length = checked(array.length) | 0
+  that = allocate(that, length)
+  // Truncating the elements is probably not what people expect from typed
+  // arrays with BYTES_PER_ELEMENT > 1 but it's compatible with the behavior
+  // of the old Buffer constructor.
+  for (var i = 0; i < length; i += 1) {
+    that[i] = array[i] & 255
+  }
+  return that
+}
+
+function fromArrayBuffer (that, array) {
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    // Return an augmented `Uint8Array` instance, for best performance
+    array.byteLength
+    that = Buffer._augment(new Uint8Array(array))
+  } else {
+    // Fallback: Return an object instance of the Buffer class
+    that = fromTypedArray(that, new Uint8Array(array))
+  }
+  return that
+}
+
+function fromArrayLike (that, array) {
+  var length = checked(array.length) | 0
+  that = allocate(that, length)
+  for (var i = 0; i < length; i += 1) {
+    that[i] = array[i] & 255
+  }
+  return that
+}
+
+// Deserialize { type: 'Buffer', data: [1,2,3,...] } into a Buffer object.
+// Returns a zero-length buffer for inputs that don't conform to the spec.
+function fromJsonObject (that, object) {
+  var array
+  var length = 0
+
+  if (object.type === 'Buffer' && isArray(object.data)) {
+    array = object.data
+    length = checked(array.length) | 0
+  }
+  that = allocate(that, length)
+
+  for (var i = 0; i < length; i += 1) {
+    that[i] = array[i] & 255
+  }
+  return that
+}
+
+if (Buffer.TYPED_ARRAY_SUPPORT) {
+  Buffer.prototype.__proto__ = Uint8Array.prototype
+  Buffer.__proto__ = Uint8Array
+} else {
+  // pre-set for values that may exist in the future
+  Buffer.prototype.length = undefined
+  Buffer.prototype.parent = undefined
+}
+
+function allocate (that, length) {
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    // Return an augmented `Uint8Array` instance, for best performance
+    that = Buffer._augment(new Uint8Array(length))
+    that.__proto__ = Buffer.prototype
+  } else {
+    // Fallback: Return an object instance of the Buffer class
+    that.length = length
+    that._isBuffer = true
+  }
+
+  var fromPool = length !== 0 && length <= Buffer.poolSize >>> 1
+  if (fromPool) that.parent = rootParent
+
+  return that
+}
+
+function checked (length) {
+  // Note: cannot use `length < kMaxLength` here because that fails when
+  // length is NaN (which is otherwise coerced to zero.)
+  if (length >= kMaxLength()) {
+    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
+  }
+  return length | 0
+}
+
+function SlowBuffer (subject, encoding) {
+  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)
+
+  var buf = new Buffer(subject, encoding)
+  delete buf.parent
+  return buf
+}
+
+Buffer.isBuffer = function isBuffer (b) {
+  return !!(b != null && b._isBuffer)
+}
+
+Buffer.compare = function compare (a, b) {
+  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+    throw new TypeError('Arguments must be Buffers')
+  }
+
+  if (a === b) return 0
+
+  var x = a.length
+  var y = b.length
+
+  var i = 0
+  var len = Math.min(x, y)
+  while (i < len) {
+    if (a[i] !== b[i]) break
+
+    ++i
+  }
+
+  if (i !== len) {
+    x = a[i]
+    y = b[i]
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+Buffer.isEncoding = function isEncoding (encoding) {
+  switch (String(encoding).toLowerCase()) {
+    case 'hex':
+    case 'utf8':
+    case 'utf-8':
+    case 'ascii':
+    case 'binary':
+    case 'base64':
+    case 'raw':
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return true
+    default:
+      return false
+  }
+}
+
+Buffer.concat = function concat (list, length) {
+  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')
+
+  if (list.length === 0) {
+    return new Buffer(0)
+  }
+
+  var i
+  if (length === undefined) {
+    length = 0
+    for (i = 0; i < list.length; i++) {
+      length += list[i].length
+    }
+  }
+
+  var buf = new Buffer(length)
+  var pos = 0
+  for (i = 0; i < list.length; i++) {
+    var item = list[i]
+    item.copy(buf, pos)
+    pos += item.length
+  }
+  return buf
+}
+
+function byteLength (string, encoding) {
+  if (typeof string !== 'string') string = '' + string
+
+  var len = string.length
+  if (len === 0) return 0
+
+  // Use a for loop to avoid recursion
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'ascii':
+      case 'binary':
+      // Deprecated
+      case 'raw':
+      case 'raws':
+        return len
+      case 'utf8':
+      case 'utf-8':
+        return utf8ToBytes(string).length
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return len * 2
+      case 'hex':
+        return len >>> 1
+      case 'base64':
+        return base64ToBytes(string).length
+      default:
+        if (loweredCase) return utf8ToBytes(string).length // assume utf8
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+Buffer.byteLength = byteLength
+
+function slowToString (encoding, start, end) {
+  var loweredCase = false
+
+  start = start | 0
+  end = end === undefined || end === Infinity ? this.length : end | 0
+
+  if (!encoding) encoding = 'utf8'
+  if (start < 0) start = 0
+  if (end > this.length) end = this.length
+  if (end <= start) return ''
+
+  while (true) {
+    switch (encoding) {
+      case 'hex':
+        return hexSlice(this, start, end)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Slice(this, start, end)
+
+      case 'ascii':
+        return asciiSlice(this, start, end)
+
+      case 'binary':
+        return binarySlice(this, start, end)
+
+      case 'base64':
+        return base64Slice(this, start, end)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return utf16leSlice(this, start, end)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = (encoding + '').toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+Buffer.prototype.toString = function toString () {
+  var length = this.length | 0
+  if (length === 0) return ''
+  if (arguments.length === 0) return utf8Slice(this, 0, length)
+  return slowToString.apply(this, arguments)
+}
+
+Buffer.prototype.equals = function equals (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return true
+  return Buffer.compare(this, b) === 0
+}
+
+Buffer.prototype.inspect = function inspect () {
+  var str = ''
+  var max = exports.INSPECT_MAX_BYTES
+  if (this.length > 0) {
+    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+    if (this.length > max) str += ' ... '
+  }
+  return '<Buffer ' + str + '>'
+}
+
+Buffer.prototype.compare = function compare (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return 0
+  return Buffer.compare(this, b)
+}
+
+Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
+  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
+  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
+  byteOffset >>= 0
+
+  if (this.length === 0) return -1
+  if (byteOffset >= this.length) return -1
+
+  // Negative offsets start from the end of the buffer
+  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)
+
+  if (typeof val === 'string') {
+    if (val.length === 0) return -1 // special case: looking for empty string always fails
+    return String.prototype.indexOf.call(this, val, byteOffset)
+  }
+  if (Buffer.isBuffer(val)) {
+    return arrayIndexOf(this, val, byteOffset)
+  }
+  if (typeof val === 'number') {
+    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
+      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
+    }
+    return arrayIndexOf(this, [ val ], byteOffset)
+  }
+
+  function arrayIndexOf (arr, val, byteOffset) {
+    var foundIndex = -1
+    for (var i = 0; byteOffset + i < arr.length; i++) {
+      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
+        if (foundIndex === -1) foundIndex = i
+        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
+      } else {
+        foundIndex = -1
+      }
+    }
+    return -1
+  }
+
+  throw new TypeError('val must be string, number or Buffer')
+}
+
+// `get` is deprecated
+Buffer.prototype.get = function get (offset) {
+  console.log('.get() is deprecated. Access using array indexes instead.')
+  return this.readUInt8(offset)
+}
+
+// `set` is deprecated
+Buffer.prototype.set = function set (v, offset) {
+  console.log('.set() is deprecated. Access using array indexes instead.')
+  return this.writeUInt8(v, offset)
+}
+
+function hexWrite (buf, string, offset, length) {
+  offset = Number(offset) || 0
+  var remaining = buf.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
+
+  // must be an even number of digits
+  var strLen = string.length
+  if (strLen % 2 !== 0) throw new Error('Invalid hex string')
+
+  if (length > strLen / 2) {
+    length = strLen / 2
+  }
+  for (var i = 0; i < length; i++) {
+    var parsed = parseInt(string.substr(i * 2, 2), 16)
+    if (isNaN(parsed)) throw new Error('Invalid hex string')
+    buf[offset + i] = parsed
+  }
+  return i
+}
+
+function utf8Write (buf, string, offset, length) {
+  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+function asciiWrite (buf, string, offset, length) {
+  return blitBuffer(asciiToBytes(string), buf, offset, length)
+}
+
+function binaryWrite (buf, string, offset, length) {
+  return asciiWrite(buf, string, offset, length)
+}
+
+function base64Write (buf, string, offset, length) {
+  return blitBuffer(base64ToBytes(string), buf, offset, length)
+}
+
+function ucs2Write (buf, string, offset, length) {
+  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+Buffer.prototype.write = function write (string, offset, length, encoding) {
+  // Buffer#write(string)
+  if (offset === undefined) {
+    encoding = 'utf8'
+    length = this.length
+    offset = 0
+  // Buffer#write(string, encoding)
+  } else if (length === undefined && typeof offset === 'string') {
+    encoding = offset
+    length = this.length
+    offset = 0
+  // Buffer#write(string, offset[, length][, encoding])
+  } else if (isFinite(offset)) {
+    offset = offset | 0
+    if (isFinite(length)) {
+      length = length | 0
+      if (encoding === undefined) encoding = 'utf8'
+    } else {
+      encoding = length
+      length = undefined
+    }
+  // legacy write(string, encoding, offset, length) - remove in v0.13
+  } else {
+    var swap = encoding
+    encoding = offset
+    offset = length | 0
+    length = swap
+  }
+
+  var remaining = this.length - offset
+  if (length === undefined || length > remaining) length = remaining
+
+  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+    throw new RangeError('attempt to write outside buffer bounds')
+  }
+
+  if (!encoding) encoding = 'utf8'
+
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'hex':
+        return hexWrite(this, string, offset, length)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Write(this, string, offset, length)
+
+      case 'ascii':
+        return asciiWrite(this, string, offset, length)
+
+      case 'binary':
+        return binaryWrite(this, string, offset, length)
+
+      case 'base64':
+        // Warning: maxLength not taken into account in base64Write
+        return base64Write(this, string, offset, length)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return ucs2Write(this, string, offset, length)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+Buffer.prototype.toJSON = function toJSON () {
+  return {
+    type: 'Buffer',
+    data: Array.prototype.slice.call(this._arr || this, 0)
+  }
+}
+
+function base64Slice (buf, start, end) {
+  if (start === 0 && end === buf.length) {
+    return base64.fromByteArray(buf)
+  } else {
+    return base64.fromByteArray(buf.slice(start, end))
+  }
+}
+
+function utf8Slice (buf, start, end) {
+  end = Math.min(buf.length, end)
+  var res = []
+
+  var i = start
+  while (i < end) {
+    var firstByte = buf[i]
+    var codePoint = null
+    var bytesPerSequence = (firstByte > 0xEF) ? 4
+      : (firstByte > 0xDF) ? 3
+      : (firstByte > 0xBF) ? 2
+      : 1
+
+    if (i + bytesPerSequence <= end) {
+      var secondByte, thirdByte, fourthByte, tempCodePoint
+
+      switch (bytesPerSequence) {
+        case 1:
+          if (firstByte < 0x80) {
+            codePoint = firstByte
+          }
+          break
+        case 2:
+          secondByte = buf[i + 1]
+          if ((secondByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+            if (tempCodePoint > 0x7F) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 3:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 4:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          fourthByte = buf[i + 3]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+              codePoint = tempCodePoint
+            }
+          }
+      }
+    }
+
+    if (codePoint === null) {
+      // we did not generate a valid codePoint so insert a
+      // replacement char (U+FFFD) and advance only 1 byte
+      codePoint = 0xFFFD
+      bytesPerSequence = 1
+    } else if (codePoint > 0xFFFF) {
+      // encode to utf16 (surrogate pair dance)
+      codePoint -= 0x10000
+      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+      codePoint = 0xDC00 | codePoint & 0x3FF
+    }
+
+    res.push(codePoint)
+    i += bytesPerSequence
+  }
+
+  return decodeCodePointsArray(res)
+}
+
+// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+// the lowest limit is Chrome, with 0x10000 args.
+// We go 1 magnitude less, for safety
+var MAX_ARGUMENTS_LENGTH = 0x1000
+
+function decodeCodePointsArray (codePoints) {
+  var len = codePoints.length
+  if (len <= MAX_ARGUMENTS_LENGTH) {
+    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+  }
+
+  // Decode in chunks to avoid "call stack size exceeded".
+  var res = ''
+  var i = 0
+  while (i < len) {
+    res += String.fromCharCode.apply(
+      String,
+      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+    )
+  }
+  return res
+}
+
+function asciiSlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; i++) {
+    ret += String.fromCharCode(buf[i] & 0x7F)
+  }
+  return ret
+}
+
+function binarySlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; i++) {
+    ret += String.fromCharCode(buf[i])
+  }
+  return ret
+}
+
+function hexSlice (buf, start, end) {
+  var len = buf.length
+
+  if (!start || start < 0) start = 0
+  if (!end || end < 0 || end > len) end = len
+
+  var out = ''
+  for (var i = start; i < end; i++) {
+    out += toHex(buf[i])
+  }
+  return out
+}
+
+function utf16leSlice (buf, start, end) {
+  var bytes = buf.slice(start, end)
+  var res = ''
+  for (var i = 0; i < bytes.length; i += 2) {
+    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+  }
+  return res
+}
+
+Buffer.prototype.slice = function slice (start, end) {
+  var len = this.length
+  start = ~~start
+  end = end === undefined ? len : ~~end
+
+  if (start < 0) {
+    start += len
+    if (start < 0) start = 0
+  } else if (start > len) {
+    start = len
+  }
+
+  if (end < 0) {
+    end += len
+    if (end < 0) end = 0
+  } else if (end > len) {
+    end = len
+  }
+
+  if (end < start) end = start
+
+  var newBuf
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    newBuf = Buffer._augment(this.subarray(start, end))
+  } else {
+    var sliceLen = end - start
+    newBuf = new Buffer(sliceLen, undefined)
+    for (var i = 0; i < sliceLen; i++) {
+      newBuf[i] = this[i + start]
+    }
+  }
+
+  if (newBuf.length) newBuf.parent = this.parent || this
+
+  return newBuf
+}
+
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) {
+    checkOffset(offset, byteLength, this.length)
+  }
+
+  var val = this[offset + --byteLength]
+  var mul = 1
+  while (byteLength > 0 && (mul *= 0x100)) {
+    val += this[offset + --byteLength] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  return this[offset]
+}
+
+Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return this[offset] | (this[offset + 1] << 8)
+}
+
+Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return (this[offset] << 8) | this[offset + 1]
+}
+
+Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return ((this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16)) +
+      (this[offset + 3] * 0x1000000)
+}
+
+Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] * 0x1000000) +
+    ((this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    this[offset + 3])
+}
+
+Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var i = byteLength
+  var mul = 1
+  var val = this[offset + --i]
+  while (i > 0 && (mul *= 0x100)) {
+    val += this[offset + --i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  if (!(this[offset] & 0x80)) return (this[offset])
+  return ((0xff - this[offset] + 1) * -1)
+}
+
+Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset] | (this[offset + 1] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset + 1] | (this[offset] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset]) |
+    (this[offset + 1] << 8) |
+    (this[offset + 2] << 16) |
+    (this[offset + 3] << 24)
+}
+
+Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] << 24) |
+    (this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    (this[offset + 3])
+}
+
+Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, true, 23, 4)
+}
+
+Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, false, 23, 4)
+}
+
+Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, true, 52, 8)
+}
+
+Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, false, 52, 8)
+}
+
+function checkInt (buf, value, offset, ext, max, min) {
+  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
+  if (value > max || value < min) throw new RangeError('value is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('index out of range')
+}
+
+Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
+
+  var mul = 1
+  var i = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
+
+  var i = byteLength - 1
+  var mul = 1
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
+
+function objectWriteUInt16 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
+    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+      (littleEndian ? i : 1 - i) * 8
+  }
+}
+
+Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value & 0xff)
+    this[offset + 1] = (value >>> 8)
+  } else {
+    objectWriteUInt16(this, value, offset, true)
+  }
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = (value & 0xff)
+  } else {
+    objectWriteUInt16(this, value, offset, false)
+  }
+  return offset + 2
+}
+
+function objectWriteUInt32 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffffffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
+    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
+  }
+}
+
+Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset + 3] = (value >>> 24)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 1] = (value >>> 8)
+    this[offset] = (value & 0xff)
+  } else {
+    objectWriteUInt32(this, value, offset, true)
+  }
+  return offset + 4
+}
+
+Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = (value & 0xff)
+  } else {
+    objectWriteUInt32(this, value, offset, false)
+  }
+  return offset + 4
+}
+
+Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) {
+    var limit = Math.pow(2, 8 * byteLength - 1)
+
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = 0
+  var mul = 1
+  var sub = value < 0 ? 1 : 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) {
+    var limit = Math.pow(2, 8 * byteLength - 1)
+
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  var sub = value < 0 ? 1 : 0
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+  if (value < 0) value = 0xff + value + 1
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
+
+Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value & 0xff)
+    this[offset + 1] = (value >>> 8)
+  } else {
+    objectWriteUInt16(this, value, offset, true)
+  }
+  return offset + 2
+}
+
+Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = (value & 0xff)
+  } else {
+    objectWriteUInt16(this, value, offset, false)
+  }
+  return offset + 2
+}
+
+Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value & 0xff)
+    this[offset + 1] = (value >>> 8)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 3] = (value >>> 24)
+  } else {
+    objectWriteUInt32(this, value, offset, true)
+  }
+  return offset + 4
+}
+
+Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (value < 0) value = 0xffffffff + value + 1
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = (value & 0xff)
+  } else {
+    objectWriteUInt32(this, value, offset, false)
+  }
+  return offset + 4
+}
+
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+  if (value > max || value < min) throw new RangeError('value is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('index out of range')
+  if (offset < 0) throw new RangeError('index out of range')
+}
+
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+  return offset + 4
+}
+
+Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, false, noAssert)
+}
+
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+  return offset + 8
+}
+
+Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, false, noAssert)
+}
+
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+  if (!start) start = 0
+  if (!end && end !== 0) end = this.length
+  if (targetStart >= target.length) targetStart = target.length
+  if (!targetStart) targetStart = 0
+  if (end > 0 && end < start) end = start
+
+  // Copy 0 bytes; we're done
+  if (end === start) return 0
+  if (target.length === 0 || this.length === 0) return 0
+
+  // Fatal error conditions
+  if (targetStart < 0) {
+    throw new RangeError('targetStart out of bounds')
+  }
+  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+
+  // Are we oob?
+  if (end > this.length) end = this.length
+  if (target.length - targetStart < end - start) {
+    end = target.length - targetStart + start
+  }
+
+  var len = end - start
+  var i
+
+  if (this === target && start < targetStart && targetStart < end) {
+    // descending copy from end
+    for (i = len - 1; i >= 0; i--) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+    // ascending copy from start
+    for (i = 0; i < len; i++) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else {
+    target._set(this.subarray(start, start + len), targetStart)
+  }
+
+  return len
+}
+
+// fill(value, start=0, end=buffer.length)
+Buffer.prototype.fill = function fill (value, start, end) {
+  if (!value) value = 0
+  if (!start) start = 0
+  if (!end) end = this.length
+
+  if (end < start) throw new RangeError('end < start')
+
+  // Fill 0 bytes; we're done
+  if (end === start) return
+  if (this.length === 0) return
+
+  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
+  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
+
+  var i
+  if (typeof value === 'number') {
+    for (i = start; i < end; i++) {
+      this[i] = value
+    }
+  } else {
+    var bytes = utf8ToBytes(value.toString())
+    var len = bytes.length
+    for (i = start; i < end; i++) {
+      this[i] = bytes[i % len]
+    }
+  }
+
+  return this
+}
+
+/**
+ * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
+ * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
+ */
+Buffer.prototype.toArrayBuffer = function toArrayBuffer () {
+  if (typeof Uint8Array !== 'undefined') {
+    if (Buffer.TYPED_ARRAY_SUPPORT) {
+      return (new Buffer(this)).buffer
+    } else {
+      var buf = new Uint8Array(this.length)
+      for (var i = 0, len = buf.length; i < len; i += 1) {
+        buf[i] = this[i]
+      }
+      return buf.buffer
+    }
+  } else {
+    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
+  }
+}
+
+// HELPER FUNCTIONS
+// ================
+
+var BP = Buffer.prototype
+
+/**
+ * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
+ */
+Buffer._augment = function _augment (arr) {
+  arr.constructor = Buffer
+  arr._isBuffer = true
+
+  // save reference to original Uint8Array set method before overwriting
+  arr._set = arr.set
+
+  // deprecated
+  arr.get = BP.get
+  arr.set = BP.set
+
+  arr.write = BP.write
+  arr.toString = BP.toString
+  arr.toLocaleString = BP.toString
+  arr.toJSON = BP.toJSON
+  arr.equals = BP.equals
+  arr.compare = BP.compare
+  arr.indexOf = BP.indexOf
+  arr.copy = BP.copy
+  arr.slice = BP.slice
+  arr.readUIntLE = BP.readUIntLE
+  arr.readUIntBE = BP.readUIntBE
+  arr.readUInt8 = BP.readUInt8
+  arr.readUInt16LE = BP.readUInt16LE
+  arr.readUInt16BE = BP.readUInt16BE
+  arr.readUInt32LE = BP.readUInt32LE
+  arr.readUInt32BE = BP.readUInt32BE
+  arr.readIntLE = BP.readIntLE
+  arr.readIntBE = BP.readIntBE
+  arr.readInt8 = BP.readInt8
+  arr.readInt16LE = BP.readInt16LE
+  arr.readInt16BE = BP.readInt16BE
+  arr.readInt32LE = BP.readInt32LE
+  arr.readInt32BE = BP.readInt32BE
+  arr.readFloatLE = BP.readFloatLE
+  arr.readFloatBE = BP.readFloatBE
+  arr.readDoubleLE = BP.readDoubleLE
+  arr.readDoubleBE = BP.readDoubleBE
+  arr.writeUInt8 = BP.writeUInt8
+  arr.writeUIntLE = BP.writeUIntLE
+  arr.writeUIntBE = BP.writeUIntBE
+  arr.writeUInt16LE = BP.writeUInt16LE
+  arr.writeUInt16BE = BP.writeUInt16BE
+  arr.writeUInt32LE = BP.writeUInt32LE
+  arr.writeUInt32BE = BP.writeUInt32BE
+  arr.writeIntLE = BP.writeIntLE
+  arr.writeIntBE = BP.writeIntBE
+  arr.writeInt8 = BP.writeInt8
+  arr.writeInt16LE = BP.writeInt16LE
+  arr.writeInt16BE = BP.writeInt16BE
+  arr.writeInt32LE = BP.writeInt32LE
+  arr.writeInt32BE = BP.writeInt32BE
+  arr.writeFloatLE = BP.writeFloatLE
+  arr.writeFloatBE = BP.writeFloatBE
+  arr.writeDoubleLE = BP.writeDoubleLE
+  arr.writeDoubleBE = BP.writeDoubleBE
+  arr.fill = BP.fill
+  arr.inspect = BP.inspect
+  arr.toArrayBuffer = BP.toArrayBuffer
+
+  return arr
+}
+
+var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
+
+function base64clean (str) {
+  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
+  // Node converts strings with length < 2 to ''
+  if (str.length < 2) return ''
+  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+  while (str.length % 4 !== 0) {
+    str = str + '='
+  }
+  return str
+}
+
+function stringtrim (str) {
+  if (str.trim) return str.trim()
+  return str.replace(/^\s+|\s+$/g, '')
+}
+
+function toHex (n) {
+  if (n < 16) return '0' + n.toString(16)
+  return n.toString(16)
+}
+
+function utf8ToBytes (string, units) {
+  units = units || Infinity
+  var codePoint
+  var length = string.length
+  var leadSurrogate = null
+  var bytes = []
+
+  for (var i = 0; i < length; i++) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+      // last char was a lead
+      if (!leadSurrogate) {
+        // no lead yet
+        if (codePoint > 0xDBFF) {
+          // unexpected trail
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else if (i + 1 === length) {
+          // unpaired lead
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        }
+
+        // valid lead
+        leadSurrogate = codePoint
+
+        continue
+      }
+
+      // 2 leads in a row
+      if (codePoint < 0xDC00) {
+        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+        leadSurrogate = codePoint
+        continue
+      }
+
+      // valid surrogate pair
+      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+    } else if (leadSurrogate) {
+      // valid bmp char, but last char was a lead
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+    }
+
+    leadSurrogate = null
+
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    } else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x110000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else {
+      throw new Error('Invalid code point')
+    }
+  }
+
+  return bytes
+}
+
+function asciiToBytes (str) {
+  var byteArray = []
+  for (var i = 0; i < str.length; i++) {
+    // Node's code seems to be doing this and not & 0x7F..
+    byteArray.push(str.charCodeAt(i) & 0xFF)
+  }
+  return byteArray
+}
+
+function utf16leToBytes (str, units) {
+  var c, hi, lo
+  var byteArray = []
+  for (var i = 0; i < str.length; i++) {
+    if ((units -= 2) < 0) break
+
+    c = str.charCodeAt(i)
+    hi = c >> 8
+    lo = c % 256
+    byteArray.push(lo)
+    byteArray.push(hi)
+  }
+
+  return byteArray
+}
+
+function base64ToBytes (str) {
+  return base64.toByteArray(base64clean(str))
+}
+
+function blitBuffer (src, dst, offset, length) {
+  for (var i = 0; i < length; i++) {
+    if ((i + offset >= dst.length) || (i >= src.length)) break
+    dst[i + offset] = src[i]
+  }
+  return i
+}
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"base64-js":1,"ieee754":2,"isarray":3}]},{},[])("buffer")
+});