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	<title>BrowserID &#8211; notizBlog</title>
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		<title>Mozilla über Single-Sign-On und das NASCAR Problem</title>
		<link>https://notiz.blog/2013/03/22/mozilla-uber-single-sign-on-und-uber-das-nascar-problem/</link>
					<comments>https://notiz.blog/2013/03/22/mozilla-uber-single-sign-on-und-uber-das-nascar-problem/#respond</comments>
		
		<dc:creator><![CDATA[Matthias Pfefferle]]></dc:creator>
		<pubDate>Fri, 22 Mar 2013 11:45:52 +0000</pubDate>
				<category><![CDATA[Open Web]]></category>
		<category><![CDATA[BrowserID]]></category>
		<category><![CDATA[Mozilla]]></category>
		<category><![CDATA[Persona]]></category>
		<category><![CDATA[SingleSignOn]]></category>
		<guid isPermaLink="false">http://notizblog.org/?p=5043</guid>

					<description><![CDATA[In particular, we think login should be personal and minimal first, social later [and] Users, not Sites, should choose their Identity Provider Users don’t like social login Soziale Netzwerke spiegeln meistens einen Lebensabschnitt und spielen nur eine begrenzte Zeit eine wichtige Rolle. Man wird älter, Interessen ändern sich, man wechselt das Netzwerk. Stellt euch vor [&#8230;]]]></description>
										<content:encoded><![CDATA[
<figure class="wp-block-pullquote"><blockquote><p>In particular, we think login should be personal and minimal first, social later [and] Users, not Sites, should choose their Identity Provider</p><cite><a href="https://web.archive.org/web/20170315025431/http://identity.mozilla.com/post/45842909320/users-dont-like-social-login">Users don’t like social login</a></cite></blockquote></figure>



<p>Soziale Netzwerke spiegeln meistens einen Lebensabschnitt und spielen nur eine begrenzte Zeit eine wichtige Rolle. Man wird älter, Interessen ändern sich, man wechselt das Netzwerk. Stellt euch vor ihr wärt bis an euer Lebensende an MySpace gebunden, nur weil ihr euch überall mit dem in die Jahre gekommen Netzwerk angemeldet habt.</p>
<p>You are a master of efficiency! By using RSS, you save time and avoid distractions. 👏</p>]]></content:encoded>
					
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			</item>
		<item>
		<title>t3n &#8211; Website-Login: Einer für alle</title>
		<link>https://notiz.blog/2012/02/27/t3n-website-login-einer-fur-alle/</link>
					<comments>https://notiz.blog/2012/02/27/t3n-website-login-einer-fur-alle/#respond</comments>
		
		<dc:creator><![CDATA[Matthias Pfefferle]]></dc:creator>
		<pubDate>Mon, 27 Feb 2012 20:51:25 +0000</pubDate>
				<category><![CDATA[Open Web]]></category>
		<category><![CDATA[Account Chooser]]></category>
		<category><![CDATA[BrowserID]]></category>
		<category><![CDATA[FediBlog]]></category>
		<category><![CDATA[Google Identity Toolkit]]></category>
		<category><![CDATA[OpenID]]></category>
		<category><![CDATA[OpenID Connect]]></category>
		<category><![CDATA[T3N]]></category>
		<guid isPermaLink="false">http://notizblog.org/?p=4164</guid>

					<description><![CDATA[Ich durfte mal wieder einen Artikel für die t3n schreiben und das Thema ist (auch mal wieder) Single Sign On. Seit Jahren spricht niemand mehr von Data Portability, und auch der Hype um OpenID flacht aus vielerlei guten Gründen immer weiter ab. Es ist an der Zeit, Bilanz zu ziehen, die Themen „Online Identity“ und [&#8230;]]]></description>
										<content:encoded><![CDATA[
<figure class="wp-block-image aligncenter"><img fetchpriority="high" decoding="async" width="598" height="226" sizes="(max-width: 598px) 100vw, 598px" src="https://notiz.blog/wp-content/uploads/2012/02/t3n-nr27.jpg" alt="t3n Nr. 27 - Future-Cash" class="wp-image-4169" srcset="https://notiz.blog/wp-content/uploads/2012/02/t3n-nr27.jpg 598w, https://notiz.blog/wp-content/uploads/2012/02/t3n-nr27-480x181.jpg 480w" /></figure>



<p>Ich durfte mal wieder einen <a href="https://t3n.de/magazin/website-login-alle-229654/">Artikel für die t3n</a> schreiben und das Thema ist (auch mal wieder) <em>Single Sign On</em>.</p>



<blockquote class="wp-block-quote is-layout-flow wp-block-quote-is-layout-flow">
	<p>Seit Jahren spricht niemand mehr von Data Portability, und auch der Hype um OpenID flacht aus vielerlei guten Gründen immer weiter ab. Es ist an der Zeit, Bilanz zu ziehen, die Themen „Online Identity“ und „Single Sign-On“ neu anzugehen und aus den Fehlern der letzten Jahre zu lernen. Ein Ausblick.</p>
</blockquote>



<p>Der Artikel beschreibt im Wesentlichen die aktuellen Projekte von OpenID (<a href="https://openid.net/connect/">OpenID Connect</a> und <a href="https://web.archive.org/web/20110924172616/http://accountchooser.com/">Account Chooser</a>), Google (<a href="http://code.google.com/apis/identitytoolkit/">Google Identity Toolkit</a>) und Mozilla (<a href="https://web.archive.org/web/20120619053844/https://browserid.org/">BrowserID</a>) und deren Starken und Schwächen.</p>



<p>Seit Freitag ist <a href="https://t3n.de/ausgabe/t3n-nr-27-future-cash/">Ausgabe 27</a> des t3n-Magazins im Handel erhältlich&#8230; also ab in den Laden, kaufen, meinen Artikel lesen und mir Feedback geben! Danke 🙂</p>
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			</item>
		<item>
		<title>BrowserID &#8211; as easy as copy &#038; paste</title>
		<link>https://notiz.blog/2012/01/07/browserid-as-easy-as-copy-and-paste/</link>
					<comments>https://notiz.blog/2012/01/07/browserid-as-easy-as-copy-and-paste/#comments</comments>
		
		<dc:creator><![CDATA[Matthias Pfefferle]]></dc:creator>
		<pubDate>Sat, 07 Jan 2012 16:35:27 +0000</pubDate>
				<category><![CDATA[Open Web]]></category>
		<category><![CDATA[BrowserID]]></category>
		<category><![CDATA[FediBlog]]></category>
		<category><![CDATA[Mozilla]]></category>
		<category><![CDATA[OpenID]]></category>
		<category><![CDATA[Plugin]]></category>
		<category><![CDATA[SingleSignOn]]></category>
		<category><![CDATA[WordPress]]></category>
		<guid isPermaLink="false">http://notizblog.org/?p=4102</guid>

					<description><![CDATA[Ich schreibe gerade einen Artikel für das t3n Magazin über aktuelle Sign-In-Mechanismen und hab mir in dem Zuge BrowserID mal etwas genauer angeschaut. Ich bin wirklich extrem überrascht mit wie wenig Arbeit es sich in z.B. WordPress einbauen lässt.]]></description>
										<content:encoded><![CDATA[
<div class="wp-block-image"><figure class="aligncenter"><img decoding="async" width="500" height="140" sizes="(max-width: 500px) 100vw, 500px" src="https://notiz.blog/wp-content/uploads/2012/01/BrowserID.jpg" alt="BrowserID" class="wp-image-4104" srcset="https://notiz.blog/wp-content/uploads/2012/01/BrowserID.jpg 500w, https://notiz.blog/wp-content/uploads/2012/01/BrowserID-480x134.jpg 480w" /></figure></div>



<p>Ich schreibe gerade einen Artikel für das <a href="http://t3n.de/">t3n Magazin</a> über aktuelle Sign-In-Mechanismen und hab mir in dem Zuge BrowserID mal etwas genauer angeschaut. Ich bin wirklich extrem überrascht mit wie wenig Arbeit es sich in z.B. WordPress einbauen lässt.</p>



<p><a href="https://web.archive.org/web/20120619053844/https://browserid.org/">BrowserID</a> besteht eigentlich nur aus einem <abbr title="JavaScript">JS</abbr>-File,ein paar Zeilen <abbr title="JavaScript">JS</abbr>-Code:</p>


<pre class="wp-block-code"><span><code class="hljs language-xml"><span class="hljs-tag">&lt;<span class="hljs-name">script</span> <span class="hljs-attr">src</span>=<span class="hljs-string">"https://browserid.org/include.js"</span> <span class="hljs-attr">type</span>=<span class="hljs-string">"text/javascript"</span>&gt;</span><span class="hljs-tag">&lt;/<span class="hljs-name">script</span>&gt;</span>
<span class="hljs-tag">&lt;<span class="hljs-name">script</span> <span class="hljs-attr">type</span>=<span class="hljs-string">"text/javascript"</span>&gt;</span><span class="actionscript">
navigator.id.get(<span class="hljs-function"><span class="hljs-keyword">function</span><span class="hljs-params">(assertion)</span> </span>{
    <span class="hljs-keyword">if</span> (assertion) {
        <span class="hljs-comment">// This code will be invoked once the user has successfully</span>
        <span class="hljs-comment">// selected an email address they control to sign in with.</span>
    } <span class="hljs-keyword">else</span> {
        <span class="hljs-comment">// something went wrong!  the user isn't logged in.</span>
    }
});
</span><span class="hljs-tag">&lt;/<span class="hljs-name">script</span>&gt;</span></code></span></pre>


<p>und dem anschließenden Verifizieren der <code>assertion</code>:</p>


<pre class="wp-block-code"><span><code class="hljs language-javascript">$ curl -d <span class="hljs-string">"assertion=&amp;audience=https://mysite.com"</span> <span class="hljs-string">"https://browserid.org/verify"</span>
{
    <span class="hljs-string">"status"</span>: <span class="hljs-string">"okay"</span>,
    <span class="hljs-string">"email"</span>: <span class="hljs-string">"lloyd@example.com"</span>,
    <span class="hljs-string">"audience"</span>: <span class="hljs-string">"https://mysite.com"</span>,
    <span class="hljs-string">"expires"</span>: <span class="hljs-number">1308859352261</span>,
    <span class="hljs-string">"issuer"</span>: <span class="hljs-string">"browserid.org"</span>
}</code></span></pre>


<p>Den ausführlichen Ablauf der Authentifizierung findet ihr auf <a href="https://github.com/mozilla/browserid/wiki/How-to-Use-BrowserID-on-Your-Site">Github</a>.</p>



<p>Um BrowserID in WordPress zu integrieren lädt man also zuerst den <abbr title="JavaScript">JS</abbr>-Code in den Login Header:</p>


<pre class="wp-block-code"><span><code class="hljs language-php"><span class="hljs-comment">// add the BrowserID javascript-code to the header</span>
add_action(<span class="hljs-string">'login_head'</span>, <span class="hljs-string">'bi_add_js_header'</span>);
<span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">bi_add_js_header</span><span class="hljs-params">()</span> </span>{
  <span class="hljs-keyword">echo</span> <span class="hljs-string">'&lt;script src="https://browserid.org/include.js" type="text/javascript"&gt;&lt;/script&gt;'</span>;
  <span class="hljs-keyword">echo</span> <span class="hljs-string">'&lt;script type="text/javascript"&gt;'</span>.<span class="hljs-string">"\n"</span>;
  <span class="hljs-keyword">echo</span> <span class="hljs-string">'function browser_id_login() {
    navigator.id.get(function(assertion) {
      if (assertion) {
        window.location="'</span> . get_site_url(<span class="hljs-keyword">null</span>, <span class="hljs-string">'/'</span>) .<span class="hljs-string">'?browser_id_assertion=" + assertion;
      } else {
        // do nothing!
      }
    })
  };'</span>.<span class="hljs-string">"\n"</span>;
  <span class="hljs-keyword">echo</span> <span class="hljs-string">'&lt;/script&gt;'</span>;
}</code></span></pre>


<p>und platziert den BrowserID-Button auf der Login-Seite:</p>


<pre class="wp-block-code"><span><code class="hljs language-xml">// add the login button
add_action('login_form', 'bi_add_button');
function bi_add_button() {
  echo '<span class="hljs-tag">&lt;<span class="hljs-name">p</span>&gt;</span><span class="hljs-tag">&lt;<span class="hljs-name">a</span> <span class="hljs-attr">href</span>=<span class="hljs-string">"#"</span> <span class="hljs-attr">onclick</span>=<span class="hljs-string">"return browser_id_login();"</span>&gt;</span><span class="hljs-tag">&lt;<span class="hljs-name">img</span> <span class="hljs-attr">src</span>=<span class="hljs-string">"https://browserid.org/i/sign_in_blue.png"</span> <span class="hljs-attr">style</span>=<span class="hljs-string">"border: 0;"</span> /&gt;</span><span class="hljs-tag">&lt;/<span class="hljs-name">a</span>&gt;</span><span class="hljs-tag">&lt;/<span class="hljs-name">p</span>&gt;</span>';
}</code></span></pre>


<p>Nach dem klick auf den Button öffnet sich das Autorisierungs-Fenster von BrowserID und nach dem erfolgreichen Sign-In wird die gerade implementierte Methode <code>navigator.id.get(function(assertion) {}</code> aufgerufen.</p>



<div class="wp-block-image"><figure class="aligncenter"><img decoding="async" width="500" height="412" sizes="(max-width: 500px) 100vw, 500px" src="https://notiz.blog/wp-content/uploads/2012/01/BrowserID-login-window.jpg" alt="BrowserID login window" class="wp-image-4111" srcset="https://notiz.blog/wp-content/uploads/2012/01/BrowserID-login-window.jpg 500w, https://notiz.blog/wp-content/uploads/2012/01/BrowserID-login-window-480x395.jpg 480w" /></figure></div>



<p>Im nächsten Schritt muß man die erhaltene <code>assertion</code> über BrowserID.org verifizieren. Da ich den notwendigen <code>POST</code> nicht über JavaScript absetzen will, leite ich einfach auf eine Seite weiter und übergebe die erhaltene <code>assertion</code> als GET-Paramater.</p>


<pre class="wp-block-code"><span><code class="hljs language-javascript"><span class="hljs-keyword">if</span> (assertion) {
  <span class="hljs-built_in">window</span>.location=<span class="hljs-string">"' . get_site_url(null, '/') .'?browser_id_assertion="</span> + assertion;
}</code></span></pre>


<p>Jetzt kann der POST bequem über WordPress abgesetzt werden.</p>


<pre class="wp-block-code"><span><code class="hljs language-php"><span class="hljs-comment">// the verification code</span>
add_action(<span class="hljs-string">'parse_request'</span>, <span class="hljs-string">'bi_verify_id'</span>);
<span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">bi_verify_id</span><span class="hljs-params">()</span> </span>{
  <span class="hljs-keyword">global</span> $wp_query, $wp, $user;

  <span class="hljs-keyword">if</span>( array_key_exists(<span class="hljs-string">'browser_id_assertion'</span>, $wp-&gt;query_vars) ) {
    <span class="hljs-comment">// some settings for the post request</span>
    $args = <span class="hljs-keyword">array</span>(
      <span class="hljs-string">'method'</span> =&gt; <span class="hljs-string">'POST'</span>,
      <span class="hljs-string">'timeout'</span> =&gt; <span class="hljs-number">30</span>,
      <span class="hljs-string">'redirection'</span> =&gt; <span class="hljs-number">0</span>,
      <span class="hljs-string">'httpversion'</span> =&gt; <span class="hljs-string">'1.0'</span>,
      <span class="hljs-string">'blocking'</span> =&gt; <span class="hljs-keyword">true</span>,
      <span class="hljs-string">'headers'</span> =&gt; <span class="hljs-keyword">array</span>(),
      <span class="hljs-string">'body'</span> =&gt; <span class="hljs-keyword">array</span>(
        <span class="hljs-string">'assertion'</span> =&gt; $wp-&gt;query_vars&#91;<span class="hljs-string">'browser_id_assertion'</span>], <span class="hljs-comment">// the assertion number we get from the js</span>
        <span class="hljs-string">'audience'</span> =&gt; <span class="hljs-string">"http://"</span>.$_SERVER&#91;<span class="hljs-string">'HTTP_HOST'</span>] <span class="hljs-comment">// the server host</span>
      ),
      <span class="hljs-string">'cookies'</span> =&gt; <span class="hljs-keyword">array</span>(),
      <span class="hljs-string">'sslverify'</span> =&gt; <span class="hljs-number">0</span>
    );

    <span class="hljs-comment">// check the response</span>
    $response = wp_remote_post(<span class="hljs-string">"https://browserid.org/verify"</span>, $args);

    <span class="hljs-keyword">if</span> (!is_wp_error($response)) {
      $bi_response = json_decode($response&#91;<span class="hljs-string">'body'</span>], <span class="hljs-keyword">true</span>);

      <span class="hljs-comment">// if everything is ok, check if there is a user with this email address</span>
      <span class="hljs-keyword">if</span> ($bi_response&#91;<span class="hljs-string">'status'</span>] == <span class="hljs-string">'okay'</span>) {
        $userdata = get_user_by(<span class="hljs-string">'email'</span>, $bi_response&#91;<span class="hljs-string">'email'</span>]);
        <span class="hljs-keyword">if</span> ($userdata) {
          $user = <span class="hljs-keyword">new</span> WP_User($userdata-&gt;ID);
          wp_set_current_user($userdata-&gt;ID, $userdata-&gt;user_login);
          wp_set_auth_cookie($userdata-&gt;ID, $rememberme);
          do_action(<span class="hljs-string">'wp_login'</span>, $userdata-&gt;user_login);

          wp_redirect(home_url());
          <span class="hljs-keyword">exit</span>;
        } <span class="hljs-keyword">else</span> {
          <span class="hljs-comment">// show error when there is no matching user</span>
          <span class="hljs-keyword">echo</span> <span class="hljs-string">"no user with email address '"</span> . $bi_response&#91;<span class="hljs-string">'email'</span>] . <span class="hljs-string">"'"</span>; 
          <span class="hljs-keyword">exit</span>;
        }
      }
    }
    
    <span class="hljs-comment">// show error if something didn't work well</span>
    <span class="hljs-keyword">echo</span> <span class="hljs-string">"error logging in"</span>; 
    <span class="hljs-keyword">exit</span>;
  }
}</code></span></pre>


<p>Gibt es einen User mit der entsprechenden E-Mail &#8211; Adresse wird er eingeloggt, falls nicht, wird ein Fehler ausgegeben.</p>



<p>Bei der Demo hab ich mir aus Zeitgründen ein wenig Code bei Marcel Bokhorst geliehen, dessen <a href="http://wordpress.org/extend/plugins/browserid/">BrowserID-Plugin</a> wesentlich ausgereifter und vollständiger ist als der kleine Demo-Code den ich hier zusammengestückelt habe.</p>



<p>Wenn euch das zu schnell ging und ich auf einige Details nicht genügend eingegangen bin, könnt ihr gerne fragen 🙂</p>



<p>Ich habe den kompletten Code übrigens auch auf <a href="https://gist.github.com/1574995">Github</a> hochgeladen&#8230; das ist einfacher als sich alles zusammen zu kopieren.</p>
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			</item>
		<item>
		<title>BrowserID</title>
		<link>https://notiz.blog/2011/07/14/browserid/</link>
					<comments>https://notiz.blog/2011/07/14/browserid/#respond</comments>
		
		<dc:creator><![CDATA[Matthias Pfefferle]]></dc:creator>
		<pubDate>Thu, 14 Jul 2011 12:09:39 +0000</pubDate>
				<category><![CDATA[OpenWeb Notizen]]></category>
		<category><![CDATA[Browser]]></category>
		<category><![CDATA[BrowserID]]></category>
		<category><![CDATA[Identity]]></category>
		<category><![CDATA[Identity in the Browser]]></category>
		<category><![CDATA[Mozilla]]></category>
		<category><![CDATA[Mozilla Labs]]></category>
		<guid isPermaLink="false">http://notizblog.org/?p=3872</guid>

					<description><![CDATA[Mozilla arbeitet an einem neuen &#8222;Identity in the Browser&#8222;-Projekt namens BrowserID: For users, BrowserID provides a safer and easier way to sign in. For developers, BrowserID offers a world class sign-in experience with only a couple lines of code. For identity providers, BrowserID lets you give your users an identity they can use everywhere.]]></description>
										<content:encoded><![CDATA[
<p>Mozilla arbeitet an einem neuen &#8222;<em>Identity in the Browser</em>&#8222;-Projekt namens <em><a href="https://web.archive.org/web/20120619053844/https://browserid.org/">BrowserID</a></em>:</p>



<blockquote class="wp-block-quote is-layout-flow wp-block-quote-is-layout-flow">
	<p>For <strong>users</strong>, BrowserID provides a safer and easier way to sign in.</p>
	<p>For <strong>developers</strong>, BrowserID offers a world class sign-in experience with only a couple lines of code.</p>
	<p>For <strong>identity providers</strong>, BrowserID lets you give your users an identity they can <strong>use everywhere</strong>.</p>
</blockquote>
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