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larlet-fr-david-cache


			
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<h1>
  <span><a id="jumper" href="#jumpto" title="Un peu perdu ?">?</a></span>
  Secure Contexts Everywhere (archive)
  <time>Pour la pérennité des contenus liés. Non-indexé, retrait sur simple email.</time>
</h1>
<section>
  <article>
    <h3><a href="https://blog.mozilla.org/security/2018/01/15/secure-contexts-everywhere/">Source originale du contenu</a></h3>
    <p>Since <a href="https://letsencrypt.org/">Let’s Encrypt</a> launched, <a href="https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts">secure contexts</a> have become much more mature. We <a href="https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts/features_restricted_to_secure_contexts">have witnessed</a> the successful restriction of existing, as well as new features to secure contexts. The W3C TAG is about to <a href="https://github.com/w3ctag/design-principles/pull/75">drastically raise the bar to ship features on insecure contexts</a>. All the building blocks are now in place to quicken the adoption of HTTPS and secure contexts, and follow through on our intent to <a href="https://blog.mozilla.org/security/2015/04/30/deprecating-non-secure-http/">deprecate non-secure HTTP</a>.</p>

<h2>Requiring secure contexts for all new features</h2>

<p>Effective immediately, all new features that are web-exposed are to be restricted to secure contexts. Web-exposed means that the feature is observable from a web page or server, whether through JavaScript, CSS, HTTP, media formats, etc. A feature can be anything from an extension of an existing IDL-defined object, a new CSS property, a new HTTP response header, to bigger features such as WebVR. In contrast, a new CSS color keyword would likely not be restricted to secure contexts.</p>

<h2>Requiring secure contexts in standards development</h2>

<p>Everyone involved in standards development is strongly encouraged to advocate requiring secure contexts for all new features on behalf of Mozilla. Any resulting complication should be raised directly against the <a href="https://w3c.github.io/webappsec-secure-contexts/">Secure Contexts</a> specification.</p>

<h2>Exceptions to requiring secure contexts</h2>

<p>There is room for exceptions, provided justification is given to the <a href="https://lists.mozilla.org/listinfo/dev-platform">dev.platform mailing list</a>. This can either be inside the <a href="https://wiki.mozilla.org/WebAPI/ExposureGuidelines">“Intent to Implement/Ship” email</a> or a separate dedicated thread. It is up to Mozilla’s Distinguished Engineers to judge the outcome of that thread and ensure the dev.platform mailing list is notified. Expect to be granted an exception if:</p>

<ul>
<li>other browsers already ship the feature insecurely</li>
<li>it can be demonstrated that requiring secure contexts results in undue implementation complexity.</li>
</ul>

<h2>Secure contexts and legacy features</h2>

<p>Features that have already shipped in insecure contexts, but are deemed more problematic than others from a security, privacy, or UX perspective, will be considered on a case-by-case basis. Making those features available exclusively to secure contexts should follow the <a href="https://wiki.mozilla.org/WebAPI/ExposureGuidelines#Guidelines_for_removing_features">guidelines for removing features</a> as appropriate.</p>

<h2>Developer tools and support</h2>

<p>To determine whether features are available developers can rely on <a href="https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/Cross_browser_testing/Feature_detection">feature detection</a>. E.g., by using the <code><a href="https://developer.mozilla.org/en-US/docs/Web/CSS/%40supports">@supports</a></code> at-rule in CSS. This is recommend over the <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/isSecureContext">self.isSecureContext</a></code> API as it is a more widely applicable pattern.</p>

<p>Mozilla <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1410365">will provide developer tools</a> to ease the transition to secure contexts and enable testing without an HTTPS server.</p>
  </article>
</section>


<nav id="jumpto">
  <p>
    <a href="/david/blog/">Accueil du blog</a> |
    <a href="https://blog.mozilla.org/security/2018/01/15/secure-contexts-everywhere/">Source originale</a> |
    <a href="/david/stream/2019/">Accueil du flux</a>
  </p>
</nav>

<footer>
  <div>
    <img src="/static/david/david-larlet-avatar.jpg" loading="lazy" class="avatar" width="200" height="200">
    <p>
      Bonjour/Hi!
      Je suis <a href="/david/" title="Profil public">David&nbsp;Larlet</a>, je vis actuellement à Montréal et j’alimente cet espace depuis 15 ans. <br>
      Si tu as apprécié cette lecture, n’hésite pas à poursuivre ton exploration. Par exemple via les <a href="/david/blog/" title="Expériences bienveillantes">réflexions bimestrielles</a>, la <a href="/david/stream/2019/" title="Pensées (dés)articulées">veille hebdomadaire</a> ou en t’abonnant au <a href="/david/log/" title="S’abonner aux publications via RSS">flux RSS</a> (<a href="/david/blog/2019/flux-rss/" title="Tiens c’est quoi un flux RSS ?">so 2005</a>).
    </p>
    <p>
      Je m’intéresse à la place que je peux avoir dans ce monde. En tant qu’humain, en tant que membre d’une famille et en tant qu’associé d’une coopérative. De temps en temps, je fais aussi des <a href="https://github.com/davidbgk" title="Principalement sur Github mais aussi ailleurs">trucs techniques</a>. Et encore plus rarement, <a href="/david/talks/" title="En ce moment je laisse plutôt la place aux autres">j’en parle</a>.
    </p>
    
    <p>
      Voici quelques articles choisis :
      <a href="/david/blog/2019/faire-equipe/" title="Accéder à l’article complet">Faire équipe</a>,
      <a href="/david/blog/2018/bivouac-automnal/" title="Accéder à l’article complet">Bivouac automnal</a>,
      <a href="/david/blog/2018/commodite-effondrement/" title="Accéder à l’article complet">Commodité et effondrement</a>,
      <a href="/david/blog/2017/donnees-communs/" title="Accéder à l’article complet">Des données aux communs</a>,
      <a href="/david/blog/2016/accompagner-enfant/" title="Accéder à l’article complet">Accompagner un enfant</a>,
      <a href="/david/blog/2016/senior-developer/" title="Accéder à l’article complet">Senior developer</a>,
      <a href="/david/blog/2016/illusion-sociale/" title="Accéder à l’article complet">L’illusion sociale</a>,
      <a href="/david/blog/2016/instantane-scopyleft/" title="Accéder à l’article complet">Instantané Scopyleft</a>,
      <a href="/david/blog/2016/enseigner-web/" title="Accéder à l’article complet">Enseigner le Web</a>,
      <a href="/david/blog/2016/simplicite-defaut/" title="Accéder à l’article complet">Simplicité par défaut</a>,
      <a href="/david/blog/2016/minimalisme-esthetique/" title="Accéder à l’article complet">Minimalisme et esthétique</a>,
      <a href="/david/blog/2014/un-web-omni-present/" title="Accéder à l’article complet">Un web omni-présent</a>,
      <a href="/david/blog/2014/manifeste-developpeur/" title="Accéder à l’article complet">Manifeste de développeur</a>,
      <a href="/david/blog/2013/confort-convivialite/" title="Accéder à l’article complet">Confort et convivialité</a>,
      <a href="/david/blog/2013/testament-numerique/" title="Accéder à l’article complet">Testament numérique</a>,
      et <a href="/david/blog/" title="Accéder aux archives">bien d’autres…</a>
    </p>
    <p>
      On peut <a href="mailto:david%40larlet.fr" title="Envoyer un courriel">échanger par courriel</a>. Si éventuellement tu souhaites que l’on travaille ensemble, tu devrais commencer par consulter le <a href="http://larlet.com">profil dédié à mon activité professionnelle</a> et/ou contacter directement <a href="http://scopyleft.fr/">scopyleft</a>, la <abbr title="Société coopérative et participative">SCOP</abbr> dont je fais partie depuis six ans. Je recommande au préalable de lire <a href="/david/blog/2018/cout-site/" title="Attention ce qui va suivre peut vous choquer">combien coûte un site</a> et pourquoi je suis plutôt favorable à une <a href="/david/pro/devis/" title="Discutons-en !">non-demande de devis</a>.
    </p>
    <p>
      Je ne traque pas ta navigation mais mon
      <abbr title="Alwaysdata, 62 rue Tiquetonne 75002 Paris, +33.184162340">hébergeur</abbr>
      conserve des logs d’accès.
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