> For the complete documentation index, see [llms.txt](https://http3-explained.haxx.se/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://http3-explained.haxx.se/fr/why-quic/why-secure.md).

# Sécurisé

QUIC est toujours sécurisé. Il n'y a pas de version en texte clair du protocole, donc négocier une connexion QUIC signifie faire de la cryptographie et de la sécurité avec TLS 1.3. Comme mentionné ci-dessus, cela empêche l'ossification ainsi que d'autres types de blocages et traitements spéciaux, et garantit que QUIC possède toutes les propriétés sécurisées de HTTPS auxquelles les utilisateurs Web s'attendent et souhaitent.

Il n’y a que quelques paquets handshake initiaux qui sont envoyés en clair, avant que les protocoles de cryptage aient été négociés.


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